CN220049532U - Prestressing force pole skeleton pre-expander - Google Patents
Prestressing force pole skeleton pre-expander Download PDFInfo
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- CN220049532U CN220049532U CN202321478444.7U CN202321478444U CN220049532U CN 220049532 U CN220049532 U CN 220049532U CN 202321478444 U CN202321478444 U CN 202321478444U CN 220049532 U CN220049532 U CN 220049532U
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- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
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- 238000005452 bending Methods 0.000 description 2
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Abstract
The utility model discloses a prestress electric pole framework pre-expander, which relates to the technical field of electric pole production and comprises a frame and a screw rod tensioning device, wherein one end of the frame is connected with a headstock in a sliding way, the other end of the frame is fixedly connected with a tailstock, an installation space of the electric pole framework is formed between the headstock and the tailstock, a top installation groove is formed in the headstock and is used for being clamped and fixed with an expanding ring at the top of the electric pole framework, a bottom installation groove is formed in the tailstock and is used for being clamped and fixed with the expanding ring at the bottom of the electric pole framework; the screw rod tensioning device is installed at one end, close to the headstock, of the frame and comprises a screw rod and a driving device, one end of the screw rod can be connected with a tensioning ring at the top of an electric pole framework on the headstock, the other end of the screw rod is connected with the driving device, the screw rod can be coaxially arranged with the tensioning ring at the top of the electric pole framework and the tensioning ring at the bottom of the electric pole framework, and the driving device can pull the tensioning ring at the top of the electric pole framework through the screw rod so as to stretch and straighten the electric pole framework.
Description
Technical Field
The utility model relates to the technical field of electric pole production, in particular to a prestressed electric pole framework pre-expander.
Background
With the continuous development of the national power industry and the continuous construction of power websites, the production and processing requirements of the electric pole serving as a basic component for power transmission are correspondingly improved.
In the existing processing process of the electric power prestressed electric pole framework, a winch traction stretching method is generally adopted to temporarily straighten the prestressed electric pole framework, but because the prestressed electric pole framework and the winch are stretched through steel wire rope connection, the steel wire rope connection belongs to flexible connection, rebound exists after force unloading, uneven stress of each straight rib in the prestressed electric pole framework is caused, the deformation is different, partial straight ribs cannot be straightened, the middle part of the prestressed electric pole framework is bent to enable the spiral ribs to be wound loosely, the product quality is directly affected, and the production efficiency is low.
Disclosure of Invention
The utility model aims to provide a prestress electric pole framework pre-expanding machine, which solves the problems in the prior art, can stretch and straighten an electric pole framework, ensures that each straight rib in the electric pole framework is uniformly stressed, has good straightening effect, and improves the product percent of pass and the production efficiency.
In order to achieve the above object, the present utility model provides the following solutions:
the utility model provides a prestress electric pole framework pre-expander which comprises a frame and a screw rod tensioning device, wherein one end of the frame is connected with a headstock in a sliding manner, the other end of the frame is fixedly connected with a tailstock, an installation space of an electric pole framework is arranged between the headstock and the tailstock, a top installation groove is formed in the headstock and is used for being clamped and fixed with an expanding ring at the top of the electric pole framework, a bottom installation groove is formed in the tailstock and is used for being clamped and fixed with the expanding ring at the bottom of the electric pole framework; the screw rod tensioning device is installed on the frame and is close to one end of the headstock, the screw rod tensioning device comprises a screw rod and a driving device, one end of the screw rod can be connected with a tensioning ring at the top of the electric pole framework on the headstock, the other end of the screw rod is connected with the driving device, the screw rod can be coaxially arranged with the tensioning ring at the top of the electric pole framework and the tensioning ring at the bottom of the electric pole framework, and the driving device can pull the tensioning ring at the top of the electric pole framework through the screw rod so as to stretch and straighten the electric pole framework.
Preferably, the frame comprises a main beam and a frame support, the main beam is horizontally arranged, the frame support is supported at the bottom of the main beam, a guide rail is arranged at the top of one end of the main beam along the extending direction of the main beam, the headstock can slide on the guide rail, and the tailstock is fixed at one end of the main beam far away from the guide rail.
Preferably, the guide rail comprises a top plate and a bottom plate which are horizontally arranged, the top plate is fixedly connected with the bottom plate through a vertical plate, and the bottom plate is fixed on the main beam;
the headstock includes headstock base, headstock baffle, first extension board and second extension board, the bottom of headstock base is provided with the spout, the roof of guide rail is inlayed and is located in the spout, the headstock baffle first extension board and the second extension board is followed on the guide rail by the tailstock extremely the extending direction of headstock is fixed in proper order on the headstock base, the top of headstock baffle first extension board and the top of second extension board all be provided with the U type breach that rises pull ring assorted at pole skeleton top, in order to form the top mounting groove.
Preferably, the driving device comprises a worm gear reducer and a motor, the worm gear reducer is mounted on the bottom plate of the guide rail through a stretching machine seat, the stretching machine seat is located at one end of the guide rail away from the tail frame, the screw rod is located between the stretching machine seat and the head frame, a screw nut is arranged on a worm gear of the worm gear reducer, one end of the screw rod, which is close to the stretching machine seat, penetrates through the stretching machine seat and is in threaded connection with the screw nut, the motor is mounted on the frame support, an output shaft of the motor is in transmission connection with an input shaft of the worm gear reducer through a belt, so that the motor can drive the screw nut to rotate, and the screw rod is driven to reciprocate along the extending direction of the guide rail.
Preferably, one end of the screw rod, which is far away from the worm gear reducer, is connected with the expansion ring at the top of the electric pole framework through a tension rod, one end of the tension rod is fixedly connected with the screw rod through a tension pin, and the other end of the tension rod can extend into the expansion ring at the top of the electric pole framework and is clamped with the expansion ring at the top of the electric pole framework.
Preferably, the headstock base is further provided with a screw rod supporting frame, and the screw rod supporting frame is supported at the bottom of the screw rod.
Preferably, the headstock base is further provided with a middle arc plate supporting frame, and the middle arc plate supporting frame is supported at one end, far away from the electric pole framework, of the expansion pull ring at the top of the electric pole framework.
Preferably, the tailstock includes tailstock base, first locating plate, second locating plate, tailstock baffle and activity limiting plate, the tailstock base is fixed on the girder, first locating plate the second locating plate with the tailstock baffle is followed on the girder by the tailstock extremely the extending direction of headstock is fixed in proper order on the tailstock base, the activity limiting plate can insert the second locating plate with between the tailstock baffle, the top of first locating plate the top of second locating plate the top of activity limiting plate and the top of tailstock baffle all be provided with pole skeleton bottom expand pull ring assorted U type breach, so as to form the end mounting groove.
Preferably, the main beam is further provided with a middle support frame, and the middle support frame can be supported at the middle part of the electric pole framework.
Preferably, the middle support frame comprises a roller frame, a roller shaft and a support roller, wherein the roller frame is fixed on the main beam, the roller shaft is horizontally arranged and perpendicular to the extending direction of the main beam, two ends of the roller shaft are respectively connected to the roller frame in a rotating mode through a bearing, the support roller is parallel to the roller shaft, a plurality of support rollers are arranged, and all the support rollers evenly encircle the roller shaft.
Compared with the prior art, the utility model has the following technical effects:
the utility model provides a prestress electric pole framework pre-expander, which comprises a frame and a screw rod tensioning device, wherein one end of the frame is slidably connected with a headstock, the other end of the frame is fixedly connected with a tailstock, the screw rod tensioning device is arranged on the frame and is close to one end of the headstock, the screw rod tensioning device comprises a screw rod and a driving device, when the prestress electric pole framework pre-expander is used, an electric pole framework is arranged between the headstock and the tailstock, an expanding pull ring at the top of the electric pole framework is fixedly clamped with a top mounting groove on the headstock, the expanding pull ring at the tail of the electric pole framework is fixedly clamped with a bottom mounting groove on the tailstock, the expanding pull ring at the top of the electric pole framework is connected with the screw rod of the screw rod tensioning device, the driving device of the screw rod tensioning device can pull the expanding pull ring at the top of the electric pole framework through the screw rod so as to stretch and straighten the electric pole framework, so that all straight ribs in the electric pole framework are uniformly stressed, the straightening effect is good, and the product qualification rate and the production efficiency are improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a prestressed electric pole skeleton pre-expander provided by an embodiment of the present utility model;
FIG. 2 is a schematic view of a rack according to an embodiment of the present utility model;
FIG. 3 is a front view of a guide rail, headstock and stretching machine base provided by an embodiment of the present utility model;
FIG. 4 is a top view of a rail, headstock, and stretching machine base provided by an embodiment of the present utility model;
FIG. 5 is a cross-sectional view of A-A of FIG. 3;
FIG. 6 is a cross-sectional view of B-B in FIG. 3;
FIG. 7 is a cross-sectional view of C-C of FIG. 3;
FIG. 8 is a cross-sectional view of D-D of FIG. 3;
fig. 9 is a front view of a screw and a worm gear reducer (screw not shown) provided in an embodiment of the present utility model;
fig. 10 is a left side view of a screw and worm gear reducer provided by an embodiment of the present utility model;
FIG. 11 is a front view of a tailstock provided by an embodiment of the present utility model;
FIG. 12 is a left side view of a tailstock provided by an embodiment of the present utility model;
fig. 13 is a front view of a middle support frame according to an embodiment of the present utility model;
fig. 14 is a left side view of a middle support frame according to an embodiment of the present utility model.
In the figure: 100-of a tension ring at the top of the electric pole framework, 101-of a tension ring at the bottom of the electric pole framework, 10-of a frame, 11-of a main beam, 12-of a frame front support, 13-of a frame middle support, 14-of a frame rear support, 20-of a headstock, 21-of a headstock base, 211-of a clamping fixing plate, 22-of a headstock baffle, 23-of a first support plate, 24-of a second support plate, 25-of a screw rod support frame, 26-of a middle arc plate support frame, 30-of a tail frame, 31-of a tail frame base, 32-of a first positioning plate, 33-of a second positioning plate, 34-of a tail frame baffle, 35-of a movable limiting plate, 36-of a first reinforcing rib plate, 37-of a second reinforcing rib plate, 40-of a screw rod, 41-of a worm gear reducer, 411-of a stretching machine seat, 412-of a screw nut, 413-of a driving belt pulley, 42-of a motor, 421-of a motor seat plate, 43-of a belt, 44-of a tension rod, 45-of a tension pin, 46-of a connecting sleeve, 50-of a guide rail, 51-of a top plate, 52-of a bottom plate, 53-of a vertical plate, 60-of a middle support frame, 61-of a roll frame, 62-of a roll support plate, 62-of a roll cover, 63-of a supporting roller, 65-of a supporting roller, and a bearing system of a bearing system.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model aims to provide a prestress electric pole framework pre-expanding machine, which solves the problems in the prior art, can stretch and straighten the electric pole framework, ensures that each straight rib in the electric pole framework is uniformly stressed, has good straightening effect, and improves the product percent of pass and the production efficiency.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the present embodiment provides a pre-tensioning machine for a prestressed electric pole framework, including a frame 10 and a screw rod tensioning device, one end of the frame 10 is slidably connected with a headstock 20, the other end is fixedly connected with a tailstock 30, a space for installing the electric pole framework is provided between the headstock 20 and the tailstock 30, a top installation groove is provided on the headstock 20, the top installation groove is used for being clamped and fixed with a tensioning ring 100 at the top of the electric pole framework, a bottom installation groove is provided on the tailstock 30, and the bottom installation groove is used for being clamped and fixed with a tensioning ring 101 at the bottom of the electric pole framework; the lead screw tensioning device is installed on the frame 10 and is close to one end of the headstock 20, the lead screw tensioning device comprises a lead screw 40 and a driving device, one end of the lead screw 40 can be connected with a tension ring 100 at the top of a pole framework on the headstock 20, the other end of the lead screw is connected with the driving device, the lead screw 40 can be coaxially arranged with the tension ring 100 at the top of the pole framework and the tension ring 101 at the bottom of the pole framework, and the driving device can pull the tension ring 100 at the top of the pole framework through the lead screw 40 so as to stretch and straighten the pole framework, so that all straight ribs in the pole framework are uniformly stressed, the straightening effect is good, and the product qualification rate and the production efficiency are improved.
In this embodiment, as shown in fig. 2, the frame 10 includes a main beam 11 and a frame support, where the main beam 11 is horizontally arranged, specifically, a rib plate is provided on the main beam 11 to strengthen the strength of the main beam 11, and the main beam 11 in this embodiment is preferably made of 38kg/m steel rails, so that on the premise of meeting the requirement of use strength, the manufacturing is convenient, and the manufacturing cost is effectively reduced; the frame support is supported at the bottom of the main beam 11 and comprises a frame front support 12, a frame middle support 13 and a frame rear support 14, wherein the frame front support 12 is positioned below the headstock 20, and the frame rear support 14 is positioned below the tailstock 30; the top of one end of the main beam 11 is provided with a guide rail 50 along the extending direction of the main beam 11, the headstock 20 can slide on the guide rail 50, and the tailstock 30 is fixed at one end of the main beam 11 far away from the guide rail 50.
Further, as shown in fig. 3 to 5, the guide rail 50 includes a top plate 51 and a bottom plate 52 which are horizontally arranged, the top plate 51 is fixedly connected with the bottom plate 52 through two vertical plates 53, and the bottom plate 52 is fixed on the main beam 11; the headstock 20 comprises a headstock base 21, a headstock baffle 22, a first support plate 23 and a second support plate 24, wherein a chute is formed in the bottom of the headstock base 21, specifically, two clamping and fixing plates 211 are respectively connected with two sides of a top plate 51 of a guide rail 50 at the bottom of the headstock base 21 through bolts, a chute is formed between the two clamping and fixing plates 211, and the top plate 51 of the guide rail 50 is positioned in the chute so that the headstock base 21 can slide along the guide rail 50; as one possible example, the surface of the top plate 51 of the guide rail 50 is provided with a polytetrafluoroethylene pad to reduce sliding friction between the top plate 51 of the guide rail 50 and the head mount 21; the headstock baffle 22, the first support plate 23 and the second support plate 24 are sequentially fixed on the headstock base 21 along the extending direction from the tailstock 30 to the headstock 20 on the guide rail 50, and U-shaped notches matched with the expansion pull ring 100 at the top of the electric pole framework are formed on the top of the headstock baffle 22, the top of the first support plate 23 and the top of the second support plate 24 to form a top mounting groove.
In this embodiment, as shown in fig. 9-10, the driving device includes a worm gear reducer 41 and a motor 42, the worm gear reducer 41 is mounted on a bottom plate 52 of a guide rail 50 through a stretching machine seat 411, the stretching machine seat 411 is located at one end of the guide rail 50 far away from the tailstock 30, as shown in fig. 8, one side of the stretching machine seat 411 is connected with the worm gear reducer 41 through bolts, and two limiting plates are arranged at the other side; the screw rod 40 is positioned between the stretching machine seat 411 and the headstock 20, a screw nut 412 is arranged on a worm wheel of the worm gear reducer 41, one end of the screw rod 40, which is close to the stretching machine seat 411, passes through the stretching machine seat 411 and is in threaded connection with the screw nut 412, a motor 42 is arranged on the front support 12 of the machine frame through a motor seat plate 421, and an output shaft of the motor 42 is in transmission connection with an input shaft of the worm gear reducer 41 through a belt 43, so that the motor 42 can drive the screw nut 412 to rotate, and the screw rod 40 is driven to reciprocate along the extending direction of the guide rail 50; specifically, the input shaft of the worm gear reducer 41 is provided with a transmission belt pulley 413, one end of the belt 43 is sleeved on the transmission belt pulley 413, and the other end is sleeved on the belt pulley of the output shaft of the motor 42; the worm gear reducer 41 in this embodiment is of the QWL25-800F type, and the belt 43 is preferably a v-belt.
As a possible example, the driving device further includes an electric control system 70, where the electric control system 70 is electrically connected to the motor 42 and is capable of controlling the start and stop, forward rotation and reverse rotation of the motor 42, and the electric control system 70 is also electrically connected to a first limit switch and a second limit switch, where the first limit switch and the second limit switch are both installed on one side of the guide rail 50, and when the headstock 20 moves on the guide rail 50 toward the worm gear reducer 41 until the electric pole framework completes alignment, the headstock 20 triggers the first limit switch to close the motor 42 and stop moving; when the head 20 moves on the rail 50 to the initial position, the head 20 triggers the second limit switch to turn off the motor 42.
In this embodiment, one end of the screw rod 40, which is far away from the worm gear reducer 41, is connected with the expansion ring 100 at the top of the screw rod framework through a tensioning rod 44, one end of the tensioning rod 44 is fixedly connected with the screw rod 40 through a tensioning pin 45, and the other end of the tensioning rod 44 can extend into the expansion ring 100 at the top of the screw rod framework and is clamped with the expansion ring 100 at the top of the screw rod framework, and in this embodiment, a connecting sleeve 46 is further sleeved at the joint of the tensioning rod 44 and the screw rod 40, so that the tensioning rod 44 and the screw rod 40 are coaxially and firmly connected.
In this embodiment, as shown in fig. 7, a screw support 25 is further disposed on the headstock base 21, and the screw support 25 is supported on the bottom of the screw 40.
In this embodiment, as shown in fig. 6, the headstock base 21 is further provided with a middle arc plate support frame 26, where the middle arc plate support frame 26 supports an end of the expansion link 100 on the top of the pole frame, which is far away from the pole frame.
In this embodiment, as shown in fig. 11-12, the tailstock 30 includes a tailstock base 31, a first positioning plate 32, a second positioning plate 33, a tailstock baffle 34, and a movable limiting plate 35, the tailstock base 31 is fixed on the main beam 11, the first positioning plate 32, the second positioning plate 33, and the tailstock baffle 34 are sequentially fixed on the tailstock base 31 along the extending direction from the tailstock 30 to the headstock 20 on the main beam 11, and two sides of the tailstock baffle 34 in this embodiment are respectively provided with a first reinforcing rib plate 36 and a second reinforcing rib plate 37 to ensure the strength of the tailstock baffle 34; the movable limiting plate 35 can be inserted between the second positioning plate 33 and the tail frame baffle 34, the movable limiting plates 35 with different specifications can be selected according to the electric pole frameworks with different types, the movable limiting plates 35 can be quickly replaced, the processing and the changing of electric pole products are conveniently and quickly adapted, and the production efficiency is improved; the top of the first locating plate 32, the top of the second locating plate 33, the top of the movable limiting plate 35 and the top of the tail frame baffle 34 are all provided with U-shaped notches matched with the expansion pull rings 101 at the bottom of the electric pole framework to form a bottom mounting groove.
In the embodiment, the main beam 11 is further provided with a middle support frame 60, and the middle support frame 60 can be supported in the middle of the electric pole framework, so that the effects of preventing the middle of the electric pole framework from sagging and bending, and facilitating the assembly and disassembly of the electric pole framework and the installation, positioning and adjustment are achieved; the middle support frames 60 in this embodiment are provided in plural, and the sizes of the middle support frames 60 at different positions on the main beam 11 are different due to the tapering of the pole frame.
Further, as shown in fig. 13-14, the middle supporting frame 60 includes a roller frame 61, a roller shaft 62 and a supporting roller 63, the roller frame 61 is fixed on the main beam 11, the roller shaft 62 is horizontally arranged and is perpendicular to the extending direction of the main beam 11, two ends of the roller shaft 62 are respectively connected on the roller frame 61 in a rotating way through a bearing 64, the outer side of the bearing 64 is connected with a bearing cover 65 through a bolt, and the bearing 64 in the embodiment is preferably a deep groove ball bearing; the support rollers 63 are parallel to the roller shaft 62, a plurality of support rollers 63 are arranged, and all the support rollers 63 are uniformly arranged around the roller shaft 62; in the pole framework tensioning process, the supporting roller 63 supports the middle of the pole framework, so that the bending deformation of the pole framework is effectively reduced, the pre-tensioning and straightening of the straight ribs of the pole framework are facilitated, meanwhile, the loading and unloading of the pole framework are facilitated, the labor intensity is reduced, and the working efficiency is improved.
The working process of the prestressed pole skeleton pre-expander provided by the embodiment is as follows:
firstly, placing an electric pole framework to be straightened on a middle support frame 60, clamping and fixing an expanding pull ring 100 at the top of the electric pole framework with a top mounting groove on a headstock 20, and clamping and fixing an expanding pull ring 101 at the bottom of the electric pole framework with a bottom mounting groove on a tailstock 30; then, connecting the tension ring 100 at the top of the electric pole framework with the screw rod 40 of the screw rod tensioning device through the tensioning rod 44; starting a motor 42 to rotate positively, transmitting power to a worm gear reducer 41 through a belt 43, enabling a screw nut 412 on a worm gear of the worm gear reducer 41 to rotate, driving a screw rod 40 to move towards the worm gear reducer 41, enabling an expanding pull ring 100 at the top of a pole framework to synchronously move along with the screw rod 40, tensioning and straightening all straight ribs in the pole framework are achieved, after design requirements are met, triggering a first limit switch by a headstock 20 to close the motor 42, completing pre-expanding and straightening of the straight ribs of the pole framework, and disassembling the pole framework; the motor 42 is started to rotate reversely, so that the screw rod 40 moves away from the worm gear reducer 41, the headstock 20 is pushed to move to the initial position, the headstock 20 triggers the second limit switch to turn off the motor 42, and the next electric pole framework is put into a state to be assembled; the prestressed electric pole framework pre-expanding machine provided by the embodiment is used for carrying out the circulating work, so that the expansion straightening of the electric pole framework can be continuously completed, and the production efficiency is high.
In conclusion, the prestressing force pole skeleton pretension machine that this embodiment provided has simple structure, low cost, stable performance, convenient to use, strong adaptability etc. advantage, is particularly useful for the production of pole prestressing force skeleton to, the adjustment to different pole skeleton production is changed easily, and alignment effect is good, has improved product percent of pass and production efficiency.
The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.
Claims (10)
1. The utility model provides a prestressing force pole skeleton pretension machine which characterized in that: the device comprises a frame and a screw rod tensioning device, wherein one end of the frame is connected with a headstock in a sliding manner, the other end of the frame is fixedly connected with a tailstock, an installation space of an electric pole framework is formed between the headstock and the tailstock, a top installation groove is formed in the headstock and is used for being fixedly clamped with an expanding ring at the top of the electric pole framework, a bottom installation groove is formed in the tailstock and is used for being fixedly clamped with the expanding ring at the bottom of the electric pole framework; the screw rod tensioning device is installed on the frame and is close to one end of the headstock, the screw rod tensioning device comprises a screw rod and a driving device, one end of the screw rod can be connected with a tensioning ring at the top of the electric pole framework on the headstock, the other end of the screw rod is connected with the driving device, the screw rod can be coaxially arranged with the tensioning ring at the top of the electric pole framework and the tensioning ring at the bottom of the electric pole framework, and the driving device can pull the tensioning ring at the top of the electric pole framework through the screw rod so as to stretch and straighten the electric pole framework.
2. The prestressed pole skeleton pre-expander of claim 1, wherein: the frame includes girder and frame support, the girder level sets up, the frame support in the bottom of girder, the top of girder one end is followed the direction that the girder extends is provided with the guide rail, the headstock can be in slide on the guide rail, the tailstock is fixed the girder is kept away from the one end of guide rail.
3. The prestressed pole skeleton pre-expander of claim 2, wherein: the guide rail comprises a top plate and a bottom plate which are horizontally arranged, the top plate is fixedly connected with the bottom plate through a vertical plate, and the bottom plate is fixed on the main beam;
the headstock includes headstock base, headstock baffle, first extension board and second extension board, the bottom of headstock base is provided with the spout, the roof of guide rail is inlayed and is located in the spout, the headstock baffle first extension board and the second extension board is followed on the guide rail by the tailstock extremely the extending direction of headstock is fixed in proper order on the headstock base, the top of headstock baffle first extension board and the top of second extension board all be provided with the U type breach that rises pull ring assorted at pole skeleton top, in order to form the top mounting groove.
4. A prestressed pole skeleton pre-expander according to claim 3, wherein: the driving device comprises a worm gear reducer and a motor, the worm gear reducer is mounted on a bottom plate of the guide rail through a stretching machine seat, the stretching machine seat is located at one end of the guide rail away from the tail frame, a screw rod is located between the stretching machine seat and the head frame, a screw nut is arranged on a worm gear of the worm gear reducer, one end, close to the stretching machine seat, of the screw rod penetrates through the stretching machine seat and is in threaded connection with the screw nut, the motor is mounted on a support of the machine frame, an output shaft of the motor is in transmission connection with an input shaft of the worm gear reducer through a belt, so that the motor can drive the screw nut to rotate, and the screw rod is driven to reciprocate along the extending direction of the guide rail.
5. The prestressed pole skeleton pre-expander of claim 4, wherein: the screw rod is far away from one end of the worm gear reducer is connected with the expansion pull ring at the top of the electric pole framework through a tensioning rod, one end of the tensioning rod is fixedly connected with the screw rod through a tensioning pin, and the other end of the tensioning rod can extend into the expansion pull ring at the top of the electric pole framework and is clamped with the expansion pull ring at the top of the electric pole framework.
6. The prestressed pole skeleton pre-expander of claim 4, wherein: the headstock base is also provided with a screw rod supporting frame, and the screw rod supporting frame is supported at the bottom of the screw rod.
7. A prestressed pole skeleton pre-expander according to claim 3, wherein: the headstock base is further provided with a middle arc plate supporting frame, and the middle arc plate supporting frame is supported at one end, far away from the electric pole framework, of the expansion pull ring at the top of the electric pole framework.
8. The prestressed pole skeleton pre-expander of claim 2, wherein: the tail frame comprises a tail frame base, a first locating plate, a second locating plate, a tail frame baffle and a movable limiting plate, wherein the tail frame base is fixed on a main beam, the first locating plate, the second locating plate and the tail frame baffle are sequentially fixed on the tail frame base along the extending direction of the main beam from the tail frame to the headstock, the movable limiting plate can be inserted between the second locating plate and the tail frame baffle, the top of the first locating plate, the top of the second locating plate, the top of the movable limiting plate and the top of the tail frame baffle are all provided with U-shaped notches matched with pull rings at the bottom of the electric pole framework, so that a bottom mounting groove is formed.
9. The prestressed pole skeleton pre-expander of claim 2, wherein: the main beam is also provided with a middle supporting frame, and the middle supporting frame can be supported in the middle of the electric pole framework.
10. The prestressed pole skeleton pre-expander of claim 9, wherein: the middle support frame comprises a roller frame, roller shafts and support rollers, wherein the roller frame is fixed on the main beam, the roller shafts are horizontally arranged and perpendicular to the extending direction of the main beam, two ends of each roller shaft are respectively connected to the roller frame in a rotating mode through a bearing, the support rollers are parallel to the roller shafts, a plurality of support rollers are arranged, and all the support rollers evenly encircle the roller shafts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321478444.7U CN220049532U (en) | 2023-06-12 | 2023-06-12 | Prestressing force pole skeleton pre-expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321478444.7U CN220049532U (en) | 2023-06-12 | 2023-06-12 | Prestressing force pole skeleton pre-expander |
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