Paying-off tensioning device for electric power engineering

Abstract

The utility model belongs to the technical field of tensioning devices, and particularly relates to an electric power engineering pay-off tensioning device which comprises a fixing frame. Through the arrangement of the positioning mechanism, the positioning mechanism is matched with the double-end threaded rod and the adjusting plate, one-way movement limiting can be conveniently carried out on the cable during paying off, the cable between the two supports cannot automatically return after being pulled and cannot downwards form sag due to the dead weight of the cable, the stability of the cable after being pulled is guaranteed, and the paying off efficiency is guaranteed; the cable penetrates through the fixing frame and is supported by the auxiliary roller, abrasion generated when the cable penetrates through the fixing frame is reduced, meanwhile, the ratchet wheel and the pawl are matched, the positioning roller can only rotate in one direction, namely, the cable rotates in the traction direction, and when traction is finished, the ratchet wheel and the pawl are self-locked in one direction, so that the positioning roller cannot rotate in the opposite direction; and then the cable is moved and positioned through the friction force between the plurality of positioning rollers and the cable, so that the stability of the cable after being pulled is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tensioner, specifically is a kind of electric power engineering pay-off tensioner. BACKGROUND

[0002] Electric wire is by one or several soft wire, outside is packed with light soft sheath;Cable is by one or several insulated wire, outside is again packed with metal or rubber and is made of tough outer layer, cable and electric wire are generally by core wire, insulating sheath and protective outer skin three components are formed, electric wire needs to be pay-off by pay-off tensioner when using.

[0003] Cable is usually suspended on support, but cable will form arc sag due to cable self-weight downward, when not pay-off cable traction, adjacent support interval arc sag cable place will pull back cable traction end, and cable needs to be tensioned again, influence pay-off efficiency;Therefore, aiming at the above problems, a kind of electric power engineering pay-off tensioner is provided. UTILITY MODEL CONTENTS

[0004] In order to make up for the deficiencies of prior art, solve the problem that cable is usually suspended on support, but cable will form arc sag due to cable self-weight downward, when not pay-off cable traction, adjacent support interval arc sag cable place will pull back cable traction end, and cable needs to be tensioned again, influence pay-off efficiency, a kind of electric power engineering pay-off tensioner is provided.

[0005] The utility model solves technical scheme that it adopts: a kind of electric power engineering pay-off tensioner described in the utility model, including fixed frame;The inner side wall of the fixed frame is equipped with adjusting groove, the inner bottom wall of the adjusting groove is rotatably connected with double-end threaded rod, the top end of the double-end threaded rod penetrates fixed frame and is communicated with outside, the outer wall of the double-end threaded rod is threadedly connected with transmission block, one end of the transmission block extends out of adjusting groove and is fixedly connected with adjusting plate, the inner side wall of the fixed frame is rotatably connected with transmission roller by pivot;

[0006] The adjusting plate is provided with a positioning mechanism, the positioning mechanism comprises a positioning groove formed in one side surface of the adjusting plate, an inner side wall of the positioning groove is rotationally connected with a positioning roller through a transmission rod, an outer wall of the transmission rod is fixedly connected with a ratchet wheel, an inner side wall of the positioning groove is rotationally connected with a pawl through a rotating shaft, the pawl is in meshing connection with the ratchet wheel, the inner side wall of the positioning groove is fixedly connected with a fixed block, one side of the positioning roller away from the transmission rod is fixedly connected with a positioning rod, the other end of the positioning rod penetrates through the fixed block, the positioning mechanism is arranged, and the positioning mechanism is matched with the double-thread rod and the adjusting plate, so that the cable can be unidirectionally moved and limited during the laying, the cable between the two supports cannot automatically return after being pulled and form an arc due to the weight of the cable, the stability of the cable after being pulled is ensured, and the laying efficiency is ensured.

[0007] Preferably, one end of the positioning rod away from the positioning roller is fixedly connected with a gear, an inner side wall of the fixed frame is formed with a groove, one side surface of the fixed frame is formed with a threaded hole in communication with the groove, a screw rod is in threaded connection in the threaded hole, one end of the screw rod extends into the groove and is rotationally connected with a rack, the other end of the screw rod extends out of the threaded hole and is in communication with the outside, and the gear, the rack and the screw rod are arranged, so that the cable can be bidirectionally moved and positioned after the laying and pulling of the cable are completed, the pressure and wear of the ratchet wheel and the pawl are reduced, and the service life is ensured.

[0008] Preferably, an outer wall of the positioning roller is provided with anti-skid protrusions, and one end of the screw rod located in the outside is fixedly connected with a knob, the anti-skid protrusions are arranged on the outer wall of the positioning roller to improve the friction and ensure the unidirectional movement and limitation of the cable.

[0009] Preferably, an inner bottom wall of the fixed frame is fixedly connected with a guide rod, a top end of the guide rod penetrates through the adjusting plate and is fixedly connected with an inner top wall of the fixed frame, and the guide rod is arranged, so as to conveniently provide auxiliary support and positioning for the movement of the adjusting plate.

[0010] Preferably, both sides of the inner wall of the fixed frame are fixedly connected with auxiliary plates, one side surface of the auxiliary plate is formed with an auxiliary groove, and an inner bottom wall of the auxiliary groove is rotationally connected with an auxiliary roller through a rotating shaft, and the auxiliary plate and the auxiliary roller are arranged to limit the entry and exit of the cable.

[0011] Preferably, an inner side wall of the fixed frame is fixedly connected with a limiting frame, and an inner bottom wall of the limiting frame is rotationally connected with a limiting roller through a rotating shaft, and the limiting frame and the limiting roller are arranged to move and position the part of the cable in the fixed frame, so as to avoid deviation of the cable.

[0012] Preferably, an outer wall of the fixed frame is provided with an identification strip and a fluorescent strip, and the identification strip and the fluorescent strip are arranged on the outer wall of the fixed plate, so as to conveniently find the position of the fixed frame.

[0013] The beneficial effects of this utility model are:

[0014] 1. This utility model provides a power engineering cable laying and tensioning device. Through the setting of the positioning mechanism, in cooperation with the double-headed threaded rod and the adjusting plate, it is convenient to limit the unidirectional movement of the cable during the laying process. This prevents the cable between the two supports from automatically retracting after being pulled and forming a sag due to its own weight, thus ensuring the stability of the cable after being pulled and ensuring the laying efficiency. The cable passes through the fixed frame and is supported by the auxiliary roller, reducing the wear generated when it passes through the fixed frame. At the same time, through the cooperation of the ratchet and pawl, the positioning roller can only rotate in one direction, that is, in the direction of cable pulling. When the pulling ends, the ratchet and pawl lock in one direction, preventing the positioning roller from rotating in the opposite direction. Then, the friction between the multiple positioning rollers and the cable moves and positions the cable to ensure the stability of the cable after being pulled.

[0015] 2. This utility model provides a power engineering cable laying and tensioning device. Through the arrangement of gears, racks, and lead screws, it is convenient to move and position the cable in both directions after the cable laying and pulling are completed. This reduces the pressure and wear of the ratchet and pawl, ensuring service life. After the pulling is completed, the lead screw is rotated to drive the rack close to the gear. When the gear and rack contact each other, they mesh and connect. Then, the positioning roller is rotated and limited in both directions through the cooperation of the lead screw and rack. This reduces the pressure of the ratchet and pawl, and also prevents the cable from moving in the pulling direction due to external force after the pulling is completed, which would affect subsequent installation. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the fixing frame in this utility model;

[0019] Figure 3 This is a perspective view of the adjusting plate in this utility model;

[0020] Figure 4 This is a cross-sectional view of the adjusting plate in this utility model.

[0021] Legend:

[0022] 1, fixed frame; 2, adjusting groove; 3, double-threaded rod; 4, adjusting plate; 5, transmission roller; 6, positioning mechanism; 61, positioning roller; 62, ratchet; 63, pawl; 64, positioning rod; 65, transmission rod; 7, gear; 8, rack; 9, screw; 10, guide rod; 11, auxiliary plate; 12, limiting frame. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] The specific embodiments are given below.

[0025] Please refer to Figures 1-4 The utility model provides a kind of electric power engineering pay-off tensioning device, including fixed frame 1;The inner side wall of fixed frame 1 is equipped with adjusting groove 2, the inner bottom wall of adjusting groove 2 is rotatably connected with double-threaded rod 3, the top end of double-threaded rod 3 penetrates fixed frame 1 and is communicated with outside, the outer wall of double-threaded rod 3 is threadedly connected with transmission block, one end of transmission block extends out adjusting groove 2 and is fixedly connected with adjusting plate 4, the inner side wall of fixed frame 1 is rotatably connected with transmission roller 5 by rotating shaft;

[0026] Adjusting plate 4 is provided with positioning mechanism 6, positioning mechanism 6 includes the positioning slot being equipped in the side surface of adjusting plate 4, the inner side wall of positioning slot is rotatably connected with positioning roller 61 by transmission rod 65, the outer wall of transmission rod 65 is fixedly connected with ratchet 62, the inner side wall of positioning slot is rotatably connected with pawl 63 by rotating shaft, pawl 63 is engagedly connected with ratchet 62, the inner side wall of positioning slot is fixedly connected with fixed block, the side surface of positioning roller 61 away from transmission rod 65 is fixedly connected with positioning rod 64, the other end of positioning rod 64 penetrates fixed block;When working, by the setting of positioning mechanism 6, it is convenient to move limit cable unidirectionally when paying-off by cooperating with double-threaded rod 3 and adjusting plate 4, so that cable between the two supports cannot automatically retreat after being pulled and form sag due to cable weight, ensure the stability of cable after being pulled, ensure pay-off efficiency, i.e. cable is passed through fixed frame 1, and is supported by auxiliary roller, reduce abrasion when passing through fixed frame 1, simultaneously, by the cooperation of ratchet 62 and pawl 63, positioning roller 61 can only rotate unidirectionally, i.e. cable pulling direction, when pulling ends, ratchet 62 and pawl 63 are unidirectionally self-locking, so that positioning roller 61 cannot rotate in opposite direction, then move and position cable by friction between multiple positioning rollers 61 and cable, to ensure the stability of cable after being pulled.

[0027] Further, as shown in Figure 2 and Figure 3 , the positioning rod 64 is fixedly connected with a gear 7 at one end away from the positioning roller 61, the inner side wall of the fixed frame 1 is provided with a groove, one side of the fixed frame 1 is provided with a threaded hole in communication with the groove, a lead screw 9 is threadedly connected in the threaded hole, one end of the lead screw 9 extends into the groove and is rotatably connected with a rack 8, and the other end of the lead screw 9 extends out of the threaded hole and communicates with the outside. In operation, the arrangement of the gear 7, the rack 8 and the lead screw 9 facilitates the bidirectional positioning of the cable after the cable is unwound and pulled, reduces the pressure and wear of the ratchet wheel 62 and the pawl 63, and ensures the service life, that is, after the cable is pulled, the lead screw 9 is rotated to drive the rack 8 to approach the gear 7, when the gear 7 and the rack 8 are in contact, they are engaged, and then the lead screw 9 and the rack 8 are matched to limit the bidirectional rotation of the positioning roller 61, that is, the pressure of the ratchet wheel 62 and the pawl 63 is reduced, and the cable can also be prevented from moving in the pulling direction due to external force after the pulling is completed, thereby affecting the subsequent installation.

[0028] Further, as shown in Figure 2 and Figure 3 , the outer wall of the positioning roller 61 is provided with anti-skid protrusions, and one end of the lead screw 9 located in the outside is fixedly connected with a knob. In operation, the anti-skid protrusions provided on the outer wall of the positioning roller 61 improve the friction force, thereby ensuring the one-way movement of the cable.

[0029] Further, as shown in Figure 2 , the inner bottom wall of the fixed frame 1 is fixedly connected with a guide rod 10, and the top end of the guide rod 10 penetrates through the adjusting plate 4 and is fixedly connected with the inner top wall of the fixed frame 1. In operation, the arrangement of the guide rod 10 facilitates the auxiliary support and positioning of the movement of the adjusting plate 4.

[0030] Further, as shown in Figure 1 , both sides of the inner wall of the fixed frame 1 are fixedly connected with auxiliary plates 11, one side of each auxiliary plate 11 is provided with an auxiliary groove, and the inner bottom wall of the auxiliary groove is rotatably connected with an auxiliary roller through a rotating shaft. In operation, the arrangement of the auxiliary plate 11 and the auxiliary roller limits the entry and exit of the cable.

[0031] Further, as shown in Figure 1 , the inner side wall of the fixed frame 1 is fixedly connected with a limiting frame 12, and the inner bottom wall of the limiting frame 12 is rotatably connected with a limiting roller through a rotating shaft. In operation, the arrangement of the limiting frame 12 and the limiting roller moves and positions the part of the cable in the fixed frame 1, thereby avoiding the deviation of the cable.

[0032] Further, as shown in Figure 1As shown, the outer wall of the fixing plate is provided with a mark strip, and the outer wall of the fixing plate is provided with a fluorescent strip.

[0033] Working principle: the cable is passed through the fixing frame 1 and supported by the auxiliary roller, reducing the wear when passing through the fixing frame 1, and the cooperation of the ratchet 62 and the pawl 63 allows the positioning roller 61 to rotate in one direction, i.e. the traction direction of the cable, and when the traction is completed, the ratchet 62 and the pawl 63 are self-locked in one direction, so that the positioning roller 61 cannot rotate in the opposite direction, and then the friction between the multiple positioning rollers 61 and the cable moves and positions the cable to ensure the stability of the cable after traction.

[0034] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A power line tensioning device, characterized in that: Includes a fixed frame (1); the inner side wall of the fixed frame (1) is provided with an adjustment groove (2), the inner bottom wall of the adjustment groove (2) is rotatably connected to a double-headed threaded rod (3), the top end of the double-headed threaded rod (3) passes through the fixed frame (1) and communicates with the outside, the outer wall of the double-headed threaded rod (3) is threadedly connected to a transmission block, one end of the transmission block extends out of the adjustment groove (2) and is fixedly connected to an adjustment plate (4), the inner side wall of the fixed frame (1) is rotatably connected to a transmission roller (5) through a rotating shaft; The adjusting plate (4) is provided with a positioning mechanism (6). The positioning mechanism (6) includes a positioning groove on one side of the adjusting plate (4). The inner wall of the positioning groove is rotatably connected to a positioning roller (61) via a transmission rod (65). The outer wall of the transmission rod (65) is fixedly connected to a ratchet (62). The inner wall of the positioning groove is rotatably connected to a pawl (63) via a rotating shaft. The pawl (63) is engaged with the ratchet (62). The inner wall of the positioning groove is fixedly connected to a fixing block. The side of the positioning roller (61) away from the transmission rod (65) is fixedly connected to a positioning rod (64). The other end of the positioning rod (64) passes through the fixing block.

2. The power engineering cable tensioning device according to claim 1, characterized in that: The positioning rod (64) is fixedly connected to a gear (7) at one end away from the positioning roller (61). The inner side wall of the fixing frame (1) is provided with a groove. One side of the fixing frame (1) is provided with a threaded hole that communicates with the groove. A lead screw (9) is threadedly connected to the threaded hole. One end of the lead screw (9) extends into the groove and is rotatably connected to a rack (8). The other end of the lead screw (9) extends out of the threaded hole and communicates with the outside.

3. The power engineering cable tensioning device according to claim 2, characterized in that: The outer wall of the positioning roller (61) is provided with anti-slip protrusions, and the end of the lead screw (9) located on the outside is fixedly connected with a knob.

4. A power engineering cable tensioning device according to claim 3, characterized in that: The bottom wall of the fixed frame (1) is fixedly connected to a guide rod (10), the top end of the guide rod (10) passes through the adjustment plate (4) and is fixedly connected to the top wall of the fixed frame (1).

5. A power engineering cable tensioning device according to claim 4, characterized in that: Auxiliary plates (11) are fixedly connected to both sides of the inner wall of the fixed frame (1). An auxiliary groove is provided on one side of the auxiliary plate (11). An auxiliary roller is rotatably connected to the inner bottom wall of the auxiliary groove through a rotating shaft.

6. A power engineering cable tensioning device according to claim 5, characterized in that: The inner side wall of the fixed frame (1) is fixedly connected to the limiting frame (12), and the inner bottom wall of the limiting frame (12) is rotatably connected to the limiting roller via a rotating shaft.

7. A power engineering cable tensioning device according to claim 6, characterized in that: The outer wall of the fixing frame (1) is provided with an identification strip and a fluorescent strip.

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