Prestress telegraph pole tensioning tool

Abstract

The utility model relates to a prestressed telegraph pole tensioning tool, and relates to the field of prestressed telegraph pole manufacturing, the prestressed telegraph pole tensioning tool comprises a tensile machine and a fixed pile, the sides, close to each other, of the tensile machine and the fixed pile are provided with tension cables, the ends, close to each other, of the tension cables are provided with tension discs, the tension discs are detachably connected with reinforcing steel bars, and the tension discs are provided with a plurality of locking grooves matched with the reinforcing steel bars; the pull disc is provided with a locking assembly used for locking the locking groove and the reinforcing steel bar, and the pull disc is detachably connected with the stretching cable. When the prestressed telegraph pole is tensioned, the pull disc and the reinforcing steel bar are fixed through the locking groove and the locking assembly, at the moment, one end face of the pull disc abuts against the reinforcing steel bar plate, when the tension cable pulls the pull disc, the pull disc mainly and directly acts on the reinforcing steel bar, only a small part of the force is transmitted to the reinforcing steel bar plate, and therefore the reinforcing steel bar is tensioned. The stretching distance and force obtained by each reinforcing steel bar are the same, and the phenomenon that the reinforcing steel bars are separated from the tie bar plate in the stretching process is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of prestressed utility pole manufacturing, and in particular to a prestressed utility pole tensioning tool. Background Art

[0002] Prestressed poles are concrete poles specially used for buildings or similar structures. They are mainly composed of main reinforcement, inner and outer spiral reinforcement, joint steel rings at both ends, end steel bars and concrete filled inside. Compared with ordinary poles, prestressed poles can reduce the corresponding steel usage to a large extent.

[0003] Before pouring concrete into the internal structure of the prestressed pole, it is necessary to place reinforcing plates on both ends of the steel bars and fix all the steel bars on the reinforcing plates. The steel wire skeleton is stretched and extended longitudinally by machines at both ends, and then the mold is filled with concrete. The excess air is then expelled by centrifugal force to improve the overall structural strength.

[0004] With regard to the above-mentioned related technologies, the existing method for stretching steel wires is usually to stretch the steel bars by directly dragging the through-bar plate through a stretching mechanism. Sometimes slippage occurs between the through-bar plate and the steel bars. At this time, not only can it not be ensured that all the steel bars have the same stretching length, but also personal and property losses may be caused by the steel bars slipping out of the through-bar plate. Utility Model Content

[0005] In order to improve the stability of the structural strength by making each steel bar have the same tensile length, and to reduce the possibility of the steel bar falling out of the reinforcing plate during the tensioning process to protect the operator, the present application provides a prestressed pole tensioning tool.

[0006] The present application provides a prestressed pole tensioning tool, which adopts the following technical solution:

[0007] A prestressed electric pole tensioning tool comprises a tensioning machine and a fixed pile. A tensioning cable is provided on the side where the tensioning machine and the fixed pile are close to each other. A pulling plate is provided on the end where the tensioning cable is close to each other. The pulling plate is detachably connected to a steel bar. The pulling plate is provided with a plurality of locking grooves adapted to the steel bar. The pulling plate is provided with a locking assembly for locking the locking grooves and the steel bar. The pulling plate is detachably connected to the tensioning cable.

[0008] By adopting the above technical scheme, when the prestressed electric pole is tensioned, the pull plate and the steel bar are fixed by the locking groove and the locking assembly. At this time, one end face of the pull plate is in contact with the tensioning plate. When the tensioning cable pulls the pull plate, the pull plate mainly applies force directly to the steel bar, and only a small part of the force is transmitted to the tensioning plate, so that the stretching distance and force obtained by each steel bar are the same, and the phenomenon of the steel bar falling out of the tensioning plate during the tensioning process is effectively reduced.

[0009] Optionally, the pulling plate includes an outer ring and an inner ring, the inner ring is divided into several sections, the locking groove includes a first mounting groove and a second mounting groove, the first mounting groove and the second mounting groove correspond one to one, the first mounting groove is located on the side of the outer ring close to the inner ring, and the second mounting groove is located on the side of the inner ring close to the outer ring, when the outer ring abuts the inner ring, the corresponding first mounting groove and the second mounting groove form a clamping space for clamping the steel bar.

[0010] By adopting the above technical solution, the outer ring is fixedly placed on the steel bar so that the steel bar is located in the first installation groove, and the inner ring is close to the outer ring. When the first installation groove and the second installation groove clamp the steel bar, the inner ring and the outer ring are fixed by the locking assembly to complete the locking of the locking groove and the steel bar. Through the detachable installation of the inner ring and the outer ring, the clamping of the steel bar and the relaxation after tensioning are achieved.

[0011] Optionally, the locking assembly is a bolt, the inner ring is provided with a plurality of threaded holes adapted to the bolts, the outer ring is provided with through holes for passing the bolts, and the centerline direction of the through holes is parallel to the axis of the clamping space.

[0012] By adopting the above technical solution, when it is necessary to close the inner ring and the outer ring, the operator drives the inner ring to move closer to the outer ring by rotating the bolts. By setting multiple bolts, the movement of the inner ring can be effectively made smoother and more stable, so that when the first installation groove and the second installation groove are closed, the inner ring and the outer ring are evenly stressed, which effectively realizes the fixation of the inner ring and the outer ring, and effectively guarantees the clamping force of the steel bars.

[0013] Optionally, both the first mounting groove and the second mounting groove are provided with patterned grooves adapted to the surface of the steel bar.

[0014] By adopting the above technical solution, when the first installation groove and the second installation groove are completely closed to achieve clamping of the steel bar, the patterned groove overlaps with the pattern on the surface of the steel bar, thereby effectively increasing the friction between the pulling plate and the steel bar, and further clamping the steel bar.

[0015] Optionally, the tensile testing machine includes a main shaft, a driving device and a connecting sleeve. A connecting sleeve for connecting the tensile cable is provided at one end of the main shaft close to the tensile cable. A worm gear transmission is provided between the driving device and the main shaft. The main shaft moves along its axial direction, and the connecting sleeve is rotatably connected to the main shaft. A thrust bearing is provided between the connecting sleeve and the main shaft.

[0016] By adopting the above technical solution, the worm gear transmission between the drive device and the main shaft can effectively provide a large axial force to pull the tensile cable. Since the tensile machine needs to withstand a large axial load during the stretching process of the prestressed pole, the wear between the connecting sleeve and the main shaft can be effectively reduced by installing a thrust bearing between the connecting sleeve and the main shaft, thereby reducing the wear of the tensile machine while providing sufficient tension.

[0017] Optionally, the tensile testing machine further includes a slide rail, the direction of the slide rail is parallel to the axial direction of the main shaft, a pulley is provided on the lower side of the connecting sleeve, and the pulley is interactively connected to the slide rail.

[0018] By adopting the above technical solution, when the prestressed electric pole is tensioned, the connecting sleeve will move along the axial direction of the main shaft. By installing a pulley on the lower side of the connecting sleeve and setting a corresponding slide rail to further guide the moving direction of the pulley, the connecting sleeve at the end of the main shaft is effectively supported.

[0019] Optionally, hooks are provided at both ends of the tensile cable, a plurality of first grooves for placing the hooks are provided on the outside of the connecting sleeve, a pull plate is provided on the hook close to the pulling disk, the pulling plate includes a hooking portion and an abutting portion, the hooking portion is provided with a second groove for placing the hook, the abutting portion is located at the end of the hooking portion away from the hook, and the abutting portion extends toward the center of the pulling disk. When the tensile machine works normally, the pulling disk and the pull plate remain in abutment.

[0020] By adopting the above technical solution, when in use, the operator hooks one end of the pull hook in the first pull groove and the other end in the second pull groove of the pull plate hooking part, and abuts the pull plate with the pull plate. The prestressed pole is tensioned by the stretching machine, and the detachable connection of the tensioning cable is achieved while ensuring the strength. When prestressed poles of different lengths are tensioned, tensioning cables of different lengths and strengths can be flexibly selected.

[0021] Optionally, the angle between the hook portion and the abutment portion is an acute angle. When working normally, the length direction of the hook portion is the same as the length direction of the tension cable, and the abutment portion is in close contact with the pull plate.

[0022] By adopting the above technical solution, during tensioning, one end of the tensioning cable is connected to the connecting sleeve, causing the tensioning cable to be inclined. Since the angle between the hooking portion and the abutting portion is an acute angle, the fitting area between the abutting portion and the pulling plate is effectively increased, thereby effectively increasing the stability during the tensioning process.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When the prestressed pole is tensioned, the pull plate and the steel bar are fixed by the locking groove and the locking assembly. At this time, one end face of the pull plate is in contact with the tensioning plate. When the tension cable pulls the pull plate, the pull plate mainly applies force directly to the steel bar, and only a small part of the force is transmitted to the tensioning plate, so that the tensioning distance and force obtained by each steel bar are the same, and the phenomenon of steel bar falling out of the tensioning plate during the tensioning process is effectively reduced;

[0025] 2. By placing the outer ring on the steel bar so that the steel bar is located in the first installation groove, and the inner ring is moved along the slide groove close to the outer ring. When the first installation groove and the second installation groove clamp the steel bar, the inner ring and the outer ring are fixed by the locking assembly to complete the locking of the locking groove and the steel bar. The removable installation of the inner ring and the outer ring realizes the clamping of the steel bar and the relaxation after tensioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a schematic diagram of the overall structure of a prestressed electric pole tensioning tool.

[0027] Figure 2 It is a schematic diagram of the local structure of the tension cable, pull plate, pull plate and other structures.

[0028] Figure 3 It is a structural diagram of the pull plate.

[0029] Figure 4 It is a cross-sectional schematic diagram of the connecting sleeve.

[0030] Figure 5 It is a top view of the overall structure.

[0031] Explanation of the reference numerals in the accompanying drawings: 101, steel bar; 102, tensioning plate; 1, tensile testing machine; 11, fixed pile; 12, main shaft; 13, connecting sleeve; 131, thrust bearing; 14, driving device; 15, pulley; 16, slide rail; 2, tensioning cable; 21, pull hook; 22, pull plate; 3, pull disc; 31, outer ring; 311, first mounting groove; 32, inner ring; 321, second mounting groove; 33, bolt. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] An embodiment of the present application discloses a prestressed utility pole tensioning tool.

[0034] Reference Figure 1A prestressed electric pole tensioning tool includes a tensioning machine 1 and a fixed pile 11. A tensioning cable 2 is provided on the side where the tensioning machine 1 and the fixed pile 11 are close to each other. A pulling plate 3 is provided on the end where the tensioning cable 2 is close to each other. The pulling plate 3 is detachably connected to the steel bar 101. The pulling plate 3 is provided with a plurality of locking grooves adapted to the steel bar 101. The pulling plate 3 is provided with a locking assembly for locking the locking grooves and the steel bar 101. The pulling plate 3 is detachably connected to the tensioning cable 2. When the prestressed electric pole is tensioned, the pulling plate 3 is fixed to the steel bar 101 by the locking grooves and the locking assembly. At this time, one end face of the pulling plate 3 is in contact with the tensioning plate 102. When the tensioning cable 2 pulls the pulling plate 3, the pulling plate 3 mainly applies force directly to the steel bar 101, and only a small part of the force is transmitted to the tensioning plate 102, so that the tensioning distance and force obtained by each steel bar 101 are the same, and the phenomenon of the steel bar 101 falling out of the tensioning plate 102 during the tensioning process is effectively reduced.

[0035] The pulling plate 3 includes an outer ring 31 and an inner ring 32. The inner ring 32 is divided into several sections. The locking groove includes a first mounting groove 311 and a second mounting groove 321. The first mounting groove 311 and the second mounting groove 321 correspond one to one. The first mounting groove 311 is located on the side of the outer ring 31 close to the inner ring 32. The second mounting groove 321 is located on the side of the inner ring 32 close to the outer ring 31. When the outer ring 31 abuts the inner ring 32, the corresponding first mounting groove 311 and the second mounting groove 321 form a clamping space for clamping the steel bar 101. By placing the outer ring 31 firmly on the steel bar 101, the steel bar 101 is located in the first installation groove 311, and the inner ring 32 is close to the outer ring 31. When the first installation groove 311 and the second installation groove 321 clamp the steel bar 101, the inner ring 32 and the outer ring 31 are fixed by the locking assembly to complete the locking of the locking groove and the steel bar 101. The steel bar 101 is clamped and released after tensioning through the detachable installation of the inner ring 32 and the outer ring 31.

[0036] In this embodiment, a detachable connection method between the pull plate 3 and the steel bar 101 is provided, that is, the pull plate 3 is divided into two sections, the two sections of the pull plate 3 are hinged close to each other, and the two sections are spliced ​​together by means of a threaded screw. That is, the outer ring 31 is divided into two sections, and the two sections of the outer ring 31 are connected by a screw.

[0037] This embodiment provides a very simple and reliable locking assembly, and introduces its installation and use. The locking assembly is a bolt 33, the inner ring 32 is provided with a plurality of threaded holes adapted to the bolt 33, and the outer ring 31 is provided with a through hole for passing the bolt 33, and the center line direction of the through hole is parallel to the axis of the clamping space. When the inner ring 32 and the outer ring 31 need to be closed, the operator drives the inner ring 32 to approach the outer ring 31 by rotating the bolt 33. By setting a plurality of bolts 33, the movement of the inner ring 32 can be effectively made more stable and smooth, so that when the first mounting groove 311 and the second mounting groove 321 are closed, the inner ring 32 and the outer ring 31 are subjected to uniform force at all locations, effectively realizing the fixation of the inner ring 32 and the outer ring 31, and effectively ensuring the clamping force for the steel bar 101.

[0038] In order to further strengthen the installation strength between the locking groove and the steel bar 101, the first installation groove 311 and the second installation groove 321 are both provided with a pattern groove adapted to the surface of the steel bar 101. When the first installation groove 311 and the second installation groove 321 are completely closed to achieve clamping of the steel bar 101, the pattern groove and the pattern on the surface of the steel bar 101 overlap, thereby effectively increasing the friction between the pull plate 3 and the steel bar 101, and further clamping the steel bar 101.

[0039] The tensile machine 1 includes a main shaft 12, a driving device 14 and a connecting sleeve 13. The connecting sleeve 13 is provided at one end of the main shaft 12 close to the tensile cable 2. The driving device 14 is used to drive the main shaft 12 to move along its axial direction. The connecting sleeve 13 is rotatably connected to the main shaft 12. A thrust bearing 131 is provided between the connecting sleeve 13 and the main shaft 12. The worm gear transmission between the driving device 14 and the main shaft 12 can effectively provide a large axial force to pull the tensile cable 2. Since the tensile machine needs to bear a large axial load during the tensile process of the prestressed electric pole, the thrust bearing 131 is installed between the connecting sleeve 13 and the main shaft 12 to effectively reduce the wear between the connecting sleeve 13 and the main shaft 12, thereby reducing the wear of the tensile machine 1 while providing sufficient tension.

[0040] Since the main shaft 12 is relatively long, if the main shaft 12 is not effectively supported and limited, the main shaft 12 may be deformed in the vertical direction. The tensile machine 1 also includes a slide rail 16, the direction of the slide rail 16 is parallel to the axial direction of the main shaft 12, and a pulley 15 is provided on the lower side of the connecting sleeve 13, and the pulley 15 is interactively connected with the slide rail 16. When the prestressed pole is tensioned, the connecting sleeve 13 will move along the axial direction of the main shaft 12. By installing the pulley 15 on the lower side of the connecting sleeve 13 and providing the corresponding slide rail 16 to further guide the moving direction of the pulley 15, the connecting sleeve 13 at the end of the main shaft 12 is effectively supported.

[0041] In order to be able to tension prestressed electric poles of different lengths, different lengths of tension cables 2 can be selected. Both ends of the tension cable 2 are provided with hooks 21, and the outer side of the connecting sleeve 13 is provided with a plurality of first grooves for placing the hooks 21. The hook 21 near the side of the pull plate 3 is provided with a pull plate 22. The pull plate 22 includes a hooking portion and an abutting portion. The hooking portion is provided with a second groove for placing the hook 21. The abutting portion is located at the end of the hooking portion away from the hook 21. The abutting portion extends toward the center of the pull plate 3. When the tensile machine 1 works normally, the pull plate 3 and the pull plate 22 remain in abutment. When in use, the operator hooks one end of the hook 21 in the first groove and the other end in the second groove of the hooking portion of the pull plate 22, and abuts the pull plate 22 against the pull plate 3. The prestressed electric pole is tensioned by the tensioning machine, and the detachable connection of the tension cable 2 is realized while ensuring the strength. When tensioning prestressed electric poles of different lengths, tension cables 2 of different lengths and strengths can be flexibly selected.

[0042] In order to further improve the connection stability between the pulling plate 22 and the pulling plate 3 during stretching. The angle between the hook portion and the abutment portion is an acute angle. When working normally, the length direction of the hook portion is the same as the length direction of the tension cable 2, and the abutment portion is in close contact with the pulling plate 3. When tensioning, one end of the tension cable 2 is connected to the connecting sleeve 13, resulting in the tension cable 2 being inclined. Since the angle between the hook portion and the abutment portion is an acute angle, the contact area between the abutment portion and the pulling plate 3 is effectively increased, thereby effectively increasing the stability during the tensioning process.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A prestressed electric pole tensioning tool, comprising a tensioning machine (1) and a fixing pile (11), characterized in that: A tension cable (2) is provided on the side where the tensile machine (1) and the fixed pile (11) are close to each other, and a pull plate (3) is provided on the end where the tensile cable (2) is close to each other. The pull plate (3) is detachably connected to the steel bar (101), and the pull plate (3) is provided with a plurality of locking grooves adapted to the steel bar (101). The pull plate (3) is provided with a locking assembly for locking the locking grooves and the steel bar (101), and the pull plate (3) is detachably connected to the tension cable (2).

2. A prestressed utility pole tensioning tool according to claim 1, characterized in that: The pull plate (3) includes an outer ring (31) and an inner ring (32), the inner ring (32) is divided into several sections, the locking groove includes a first mounting groove (311) and a second mounting groove (321), the first mounting groove (311) and the second mounting groove (321) correspond to each other, the first mounting groove (311) is located on a side of the outer ring (31) close to the inner ring (32), and the second mounting groove (321) is located on a side of the inner ring (32) close to the outer ring (31), when the outer ring (31) and the inner ring (32) are in contact, the corresponding first mounting groove (311) and the second mounting groove (321) form a clamping space for clamping the steel bar (101).

3. A prestressed utility pole tensioning tool according to claim 2, characterized in that: The locking assembly is a bolt (33), the inner ring (32) is provided with a plurality of threaded holes adapted to the bolts (33), the outer ring (31) is provided with a through hole for passing the bolts (33), and the center line direction of the through hole is parallel to the axis of the clamping space.

4. A prestressed utility pole tensioning tool according to claim 2, characterized in that: The first installation groove (311) and the second installation groove (321) are both provided with patterned grooves adapted to the surface of the steel bar (101).

5. A prestressed utility pole tensioning tool according to claim 1, characterized in that: The tensile machine (1) comprises a main shaft (12), a driving device (14) and a connecting sleeve (13); a connecting sleeve (13) is provided at one end of the main shaft (12) close to the tensile cable (2); the driving device (14) is used to drive the main shaft (12) to move along its axial direction; the connecting sleeve (13) is rotatably connected to the main shaft (12); and a thrust bearing (131) is provided between the connecting sleeve (13) and the main shaft (12).

6. A prestressed utility pole tensioning tool according to claim 5, characterized in that: The tensile testing machine (1) further comprises a slide rail (16), the direction of the slide rail (16) is parallel to the axial direction of the main shaft (12), a pulley (15) is provided on the lower side of the connecting sleeve (13), and the pulley (15) is interactively connected to the slide rail (16).

7. A prestressed utility pole tensioning tool according to claim 6, characterized in that: Both ends of the tensile cable (2) are provided with a draw hook (21), the outer side of the connecting sleeve (13) is provided with a plurality of first draw grooves for accommodating the draw hook (21), the draw hook (21) close to the side of the pull plate (3) is provided with a draw plate (22), the draw plate (22) comprises a hooking portion and an abutting portion, the hooking portion is provided with a second draw groove for accommodating the draw hook (21), the abutting portion is located at the end of the hooking portion away from the draw hook (21), and the abutting portion extends toward the center of the pull plate (3), and when the tensile machine (1) is working normally, the pull plate (3) and the draw plate (22) maintain abutment.

8. A prestressed utility pole tensioning tool according to claim 7, characterized in that: The angle between the hook portion and the abutment portion is an acute angle. When working normally, the length direction of the hook portion is the same as the length direction of the tension rope (2).

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