Power transmission line tensioning device

Abstract

The invention belongs to the technical field of power distribution network auxiliary equipment, and particularly relates to a power transmission line tensioning device. Comprising a supporting plate frame, a winding plate frame, a winding limiting plate, a self-locking limiting plate, a ratchet wheel and a wire clamp. The supporting plate frame comprises two mounting plates which are connected with each other and are in bilateral symmetry and a connecting plate located on the front sides of the two mounting plates; the rolling plate frame comprises two rolling plates parallel to the mounting plates and located on the inner sides of the two mounting plates, and grab handles located on the front sides of the rolling plates. The wire clamp comprises two clamping plates which are symmetrically connected through a bolt group and have half-moon-shaped cross sections; the two ratchet wheels are respectively positioned between the mounting plates; the invention relates to a power transmission line tensioning device, and mainly aims to provide a power transmission line tensioning device which is light in weight, convenient to use, small in occupied area and convenient to maintain, and is used for adjusting and controlling the tension degree of a power transmission line in the installation, use or maintenance process of various power transmission line cables, or temporarily used for cable storage and protection.

Description

Technical Field

[0001] The invention belongs to the technical field of power distribution network auxiliary equipment, and in particular relates to a transmission line tensioning device. Background Art

[0002] During the construction and maintenance of transmission lines, it is often necessary to control and adjust the tension of various distribution cables. Since most cables are heavy and the cable tension is too large to be completed manually, it is generally necessary to use a tensioning device to operate. Commonly used tensioners include hand chain hoists and ratchet tensioners. Among them, hand chain hoists are easy to use, but the structure is complex and the use and maintenance are very troublesome. Ratchet tensioners are easy to use but require sufficient operating space and are limited in usage scenarios. Double hook tensioners have limited adjustment capabilities and are generally used as fixed tension control structures. Summary of the invention

[0003] The purpose of the present invention is to provide a transmission line tensioning device which is compact in size, easy to use and requires a small operating space based on actual needs.

[0004] To achieve the above purpose, the present invention adopts the following technical solution.

[0005] A transmission line tensioning device, comprising a support plate frame 1, a winding plate frame 2, a winding limit plate 3, a self-locking limit plate 4, a ratchet 5, and a wire clamp 6;

[0006] The support plate frame 1 comprises two mutually connected and bilaterally symmetrical mounting plates 10 and a connecting plate 11 located in front of the two mounting plates 10; a wire clamp mounting hole 10a is provided on the rear side of the mounting plate 10; a first strip hole 10b extending obliquely downward is provided on the front side of the wire clamp mounting hole 10a;

[0007] The winding plate frame 2 includes two winding plates 20 arranged parallel to the mounting plate 10 and located inside the two mounting plates 10, and a handle 21 located in front of the winding plates 20; a wire clamp through hole 20a is provided on the rear side of the winding plate 20, and a second strip hole 20b extending obliquely upward is provided on the front side of the wire clamp through hole 20a;

[0008] The wire clamp 6 comprises two clamping plates 60 with a half-moon-shaped cross section symmetrically connected by a bolt group;

[0009] There are two ratchets 5, which are respectively located between the mounting plates 10; a half-moon hole 5a is dug out in the middle of the ratchet 5 for inserting two clamping plates 60;

[0010] The two ends of the two clamping plates 60 are inserted into the wire clamp through hole 20a, the half-moon hole 5a and the wire clamp installation hole 10a in sequence;

[0011] The winding limit plate 3 can be inserted into the second strip holes 20b on the left and right sides in a slidable manner. The rear side of the winding limit plate 3 is provided with a first clamping area 30 that can clamp the ratchet 5. The front side of the winding limit plate 3 is provided with a mounting column 31. The mounting column 31 is provided with a first compression spring 70. The front end of the first compression spring 70 abuts against the rear end of the winding plate frame 2 and the winding limit plate 3 to make it have a tendency to slide backward.

[0012] The self-locking limit plate 4 can be slidably inserted into the first strip holes 10b on the left and right sides. The rear side of the self-locking limit plate 4 is provided with a second clamping area 40 that can clamp the ratchet 5. The left and right sides of the large end surface of the self-locking limit plate 4 are also provided with mounting rods 72 for installing the torsion spring 71. One end of the torsion spring 71 is against the support plate frame 1 and the other end is against the self-locking limit plate 4 to make it have a tendency to slide backward.

[0013] A further improvement or preferred embodiment of the aforementioned transmission line tensioning device, a torsion spring limiting hole 10c is further provided on the upper side of the first strip hole 10b; the mounting rod 72 is located on the upper large end surface of the self-locking limiting plate 4; one end of the torsion spring 71 abuts against the support plate frame 1 and is inserted into the torsion spring limiting hole 10c;

[0014] A pressing plate surface 22 is provided on the top of the winding plate frame 2, and the pressing plate surface 22 is connected to the left and right winding plates 20, and a downwardly bent positioning plate surface 23 is provided at the front end. A positioning hole facing the mounting column 31 is provided on the positioning plate surface 23, and the front end of the mounting column 31 is inserted into the positioning hole, and the front end of the first compression spring 70 is against the positioning plate surface 23.

[0015] As a further improvement or preferred embodiment of the aforementioned transmission line tensioning device, a snap-in 25 which can be latched by the second snap-in area 40 is disposed at the lower rear portion of the winding plate 20 .

[0016] A further improvement or preferred embodiment of the aforementioned transmission line tensioning device, wherein the handle 21 is a round tube structure, and locking holes 10d are provided on the two mounting plates 10; after the handle 21 is pressed down, the locking holes 10d can be aligned with the tube openings on both sides of the handle 21, and at the same time, the second clamping area 40 is clamped into the clamping hole 25; and a locking shaft that can be inserted into the handle 21 and the locking holes 10d on both sides is also included.

[0017] As a further improvement or preferred embodiment of the aforementioned transmission line tensioning device, a manual operating portion 41 is provided at the rear side of the self-locking limit plate 4 .

[0018] A further improvement or preferred embodiment of the above-mentioned transmission line tensioning device is that the connecting plate 11 is provided with a front guide hole 11a; the upper and lower sides of the two mounting plates 10 are respectively provided with a bottom plate 12 and a top plate 13; the bottom plate 12 and the top plate 13 and the left and right mounting plates 10 form a guide groove 10e;

[0019] The invention also includes a movable plate 8 disposed at the rear side of the connecting plate 11, and slidably inserted into the guide grooves 10e on both sides. The movable plate 8 is provided with a rear guide hole directly opposite to the front guide hole 11a. A connecting screw 90 is observed in the front guide hole 11a and the rear guide hole. The rear end of the connecting screw 90 passes through the rear guide hole and is installed with an anti-drop nut 91.

[0020] A compression spring is also provided on the connecting screw rod 90 , the front end of the compression spring abuts against the connecting plate 11 and the rear end of the compression spring abuts against the movable plate 8 .

[0021] A further improvement or preferred embodiment of the aforementioned transmission line tensioning device is that auxiliary limiting rods 92 are respectively provided on the left and right sides of the rear guide hole; a through hole for the auxiliary limiting rod 92 to pass through is provided on the front side of the connecting plate 11;

[0022] The auxiliary limiting rod 92 is inserted into the through hole, and a return spring is sleeved on the auxiliary limiting rod 92 , and the front end of the return spring abuts against the rear side of the connecting plate 11 and the movable plate 8 .

[0023] As a further improvement or preferred embodiment of the aforementioned transmission line tensioning device, a locking screw hole 60e is provided on the clamping plate 60 on at least one side of the wire clamp 6, and a locking bolt is provided in the locking screw hole 60e.

[0024] As a further improvement or preferred embodiment of the aforementioned transmission line tensioning device, the inner wall surface of the clamping plate 60 is provided with an anti-slip pattern directly opposite to the locking screw hole 60e. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a top view of the aforementioned transmission line tensioning device;

[0026] Figure 2 is a side cross-sectional view of the aforementioned transmission line tensioning device;

[0027] Figure 3 is a perspective view of the aforementioned transmission line tensioning device;

[0028] Figure 4 is a top cross-sectional view of the aforementioned transmission line tensioning device;

[0029] Figure 5 is a schematic diagram of the assembly of the aforementioned transmission line tensioning device;

[0030] The reference numerals include:

[0031] Support plate frame 1, mounting plate 10, wire clamp mounting hole 10a, first strip hole 10b, torsion spring limit hole 10c, locking hole 10d, guide groove 10e, connecting plate 11, front guide hole 11a, bottom plate 12, top plate 13 winding plate frame 2, winding plate 20, second strip hole 20b, wire clamp through hole 20a, second strip hole 20b, handle 21, pressing plate surface 22, positioning plate surface 23, bayonet 25, winding limit plate 3, first clamping area 30, mounting column 31, self-locking limit plate 4, second clamping area 40, manual operation part 41, ratchet 5, half-moon hole 5a, wire clamp 6, clamp plate 60, locking screw hole 60e, first compression spring 70, torsion spring 71, mounting rod 72, movable plate 8, connecting screw 90, anti-slip nut 91, auxiliary limit rod 92. DETAILED DESCRIPTION

[0032] The present invention is described in detail below in conjunction with specific embodiments.

[0033] The present invention relates to a transmission line tensioning device, which is mainly used to provide a transmission line tensioning device which is lightweight, easy to use, occupies a small area and is easy to maintain. The device is used to adjust and control the tension of transmission lines during the installation, use or maintenance of various transmission line cables, or is temporarily used for cable storage and protection.

[0034] like Figure 1 , Figure 2 As shown, the transmission line tensioning device of the present invention mainly comprises a support plate frame 1, a winding plate frame 2, a winding limit plate 3, a self-locking limit plate 4, a ratchet 5, and a wire clamp 6;

[0035] The support plate frame 1 includes two mutually connected and bilaterally symmetrical mounting plates 10 and a connecting plate 11 located in front of the two mounting plates 10; a wire clamp mounting hole 10a is provided on the rear side of the mounting plate 10; a first strip hole 10b extending obliquely downward is provided on the front side of the wire clamp mounting hole 10a;

[0036] The winding plate frame 2 includes two winding plates 20 arranged parallel to the mounting plate 10 and located inside the two mounting plates 10, and a handle 21 located in front of the winding plates 20; a wire clamp through hole 20a is provided on the rear side of the winding plate 20, and a second strip hole 20b extending obliquely upward is provided on the front side of the wire clamp through hole 20a;

[0037] The wire clamp 6 comprises two clamping plates 60 with a half-moon-shaped cross section symmetrically connected by a bolt group;

[0038] There are two ratchets 5, which are respectively located between the mounting plates 10; a half-moon hole 5a is dug out in the middle of the ratchet 5 for inserting two clamping plates 60;

[0039] The two ends of the two clamping plates 60 are inserted into the wire clamp through hole 20a, the half-moon hole 5a and the wire clamp installation hole 10a in sequence;

[0040] The winding limit plate 3 can be inserted into the second strip holes 20b on the left and right sides in a slidable manner. The rear side of the winding limit plate 3 is provided with a first clamping area 30 that can clamp the ratchet 5. The front side of the winding limit plate 3 is provided with a mounting column 31. The mounting column 31 is provided with a first compression spring 70. The front end of the first compression spring 70 abuts against the rear end of the winding plate frame 2 and the winding limit plate 3 to make it have a tendency to slide backward.

[0041] The self-locking limit plate 4 can be slidably inserted into the first strip holes 10b on the left and right sides. The rear side of the self-locking limit plate 4 is provided with a second clamping area 40 that can clamp the ratchet 5. The left and right sides of the large end surface of the self-locking limit plate 4 are also provided with mounting rods 72 for installing the torsion spring 71. One end of the torsion spring 71 is against the support plate frame 1 and the other end is against the self-locking limit plate 4 to make it have a tendency to slide backward.

[0042] By using a simple and compact plate frame structure in conjunction with components such as a ratchet spring, the transmission line tensioning device of the present invention has the characteristics of simple and compact structure, good stability, and convenient operation. It has a small overall size and light weight. The winding plate frame has a small range of motion. The two internal limit plates can realize the automatic anti-rotation function of the ratchet during the tensioning process and the automatic locking function after the tensioning is completed. No additional operation is required, which is simple and efficient.

[0043] In order to ensure that the limiting plate moves accurately and can be positioned continuously and efficiently, in this embodiment, a torsion spring limiting hole 10c is further provided on the upper side of the first strip hole 10b; the mounting rod 72 is located on the upper large end surface of the self-locking limiting plate 4; one end of the torsion spring 71 that abuts against the support plate frame 1 is inserted into the torsion spring limiting hole 10c;

[0044] A pressing plate surface 22 is provided at the top of the winding plate frame 2, which is connected to the left and right winding plates 20, and a downwardly bent positioning plate surface 23 is provided at the front end. A positioning hole facing the mounting column 31 is provided on the positioning plate surface 23, and the front end of the mounting column 31 is inserted into the positioning hole, and the front end of the first compression spring 70 is against the positioning plate surface 23.

[0045] In order to facilitate the storage and fixation of the winding plate rack after use and compress the storage space of the device, a clamping hole 25 that can be occupied by the second clamping area 40 is provided at the lower rear side of the winding plate 20. Based on this structure, when not in use, the winding plate rack can be directly inserted into the inner side of the supporting plate rack 1 and locked by the self-locking limit plate 4. The whole process only requires pressing the winding plate rack down to the limit position to achieve automatic locking.

[0046] To facilitate storage and prevent the limit plate from being deformed and damaged due to long-term squeezing and stress when not in use, in this embodiment, the handle 21 is configured as a round tube structure, and locking holes 10d are provided on the two mounting plates 10; after the handle 21 is pressed down, the locking holes 10d can be aligned with the tube openings on both sides of the handle 21, and the second clamping area 40 is clamped into the clamping hole 25; finally, the structure is locked by a locking shaft that can be inserted into the handle 21 and the locking holes 10d on both sides.

[0047] At the same time, in order to facilitate the release of the transmission line tensioning device or the release of the line after storage and locking, a manual operating part 41 is provided on the rear side of the self-locking limit plate 4.

[0048] When it is needed, the manual operating part 41 is pulled forward, and the torsion spring is compressed, so that the self-locking limit plate 4 moves forward as a whole, so that the winding plate frame or the ratchet wheel can rotate freely, and then it can be used. After releasing the manual operating part 41, the torsion spring pushes the self-locking limit plate 4 to move backward as a whole, and continues to perform the locking limit function. The process is simple and fast, and the operation saves time and effort.

[0049] In particular, in order to match various distribution wire and cable connection structures or specific structures of fixed positions, in this example, a front guide hole 11a is provided on the connecting plate 11; a bottom plate 12 and a top plate 13 are respectively provided on the upper and lower sides of the two mounting plates 10; the bottom plate 12 and the top plate 13 and the left and right mounting plates 10 form a guide groove 10e; it also includes a movable plate 8 arranged on the rear side of the connecting plate 11, which can be slidably inserted in the guide groove 10e on both sides, and the movable plate 8 is provided with a rear guide hole opposite to the front guide hole 11a; connecting screws 90 are observed in the front guide hole 11a and the rear guide hole; the rear end of the connecting screw 90 passes through the rear guide hole and is installed with an anti-slip nut 91, and a compression spring is also provided on the connecting screw 90, and the front end of the compression spring presses against the rear end of the connecting plate 11 and the movable plate 8.

[0050] Auxiliary limiting rods 92 are respectively arranged on the left and right sides of the rear guide hole; a through hole for the auxiliary limiting rod 92 to pass through is arranged on the front side of the connecting plate 11;

[0051] The auxiliary limiting rod 92 is inserted into the through hole, and a return spring is sleeved on the auxiliary limiting rod 92 , and the front end of the return spring abuts against the rear side of the connecting plate 11 and the movable plate 8 .

[0052] By providing an additional connecting screw 90, in addition to using the support plate frame for fixing, the connecting screw can be used for connection and fixing to meet the use and assembly requirements of different types of devices or tensioning structures, thereby improving the flexibility of the device;

[0053] In particular, in order to facilitate the fixation of the transmission line cables and improve the connection strength between the cables and the tensioning device, in this embodiment, a locking screw hole 60e is provided on the clamping plate 60 on at least one side of the wire clamp 6, and a locking bolt is provided in the locking screw hole 60e.

[0054] An anti-slip pattern is provided on the inner wall surface of the clamping plate 60 and is directly opposite to the locking screw hole 60e, so as to improve the fixing effect of the locking bolt.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A transmission line tensioning device, characterized in that: It comprises a support plate frame (1), a winding plate frame (2), a winding limit plate (3), a self-locking limit plate (4), a ratchet wheel (5), and a wire clamp (6); The support plate frame (1) comprises two mutually connected and bilaterally symmetrical mounting plates (10) and a connecting plate (11) located in front of the two mounting plates (10); a wire clamp mounting hole (10a) is provided on the rear side of the mounting plate (10); a first strip-shaped hole (10b) extending obliquely downward is provided on the front side of the wire clamp mounting hole (10a); The winding plate frame (2) comprises two winding plates (20) arranged parallel to the mounting plates (10) and located inside the two mounting plates (10), and a handle (21) located in front of the winding plates (20); a wire clamp through hole (20a) is provided on the rear side of the winding plate (20), and a second strip hole (20b) extending obliquely upward is provided on the front side of the wire clamp through hole (20a); The wire clamp (6) comprises two clamping plates (60) with a half-moon-shaped cross section, which are symmetrically connected by a bolt group; There are two ratchets (5) and they are respectively located between the mounting plates (10); a half-moon hole (5a) for inserting two clamping plates (60) is dug out in the middle of the ratchets (5); The two ends of the two clamping plates (60) are sequentially inserted into the wire clamp through hole (20a), the half-moon hole (5a) and the wire clamp installation hole (10a); The winding limit plate (3) can be inserted into the second strip holes (20b) on the left and right sides in a slidable manner forward and backward, a first clamping area (30) capable of clamping the ratchet (5) is provided on the rear side of the winding limit plate (3), a mounting column (31) is provided on the front side of the winding limit plate (3), a first compression spring (70) is provided on the mounting column (31), the front end of the first compression spring (70) abuts against the winding plate frame (2) and the rear end of the winding limit plate (3) to make it have a tendency to slide backward; The self-locking limit plate (4) can be inserted into the first strip holes (10b) on the left and right sides in a slidable manner. The rear side of the self-locking limit plate (4) is provided with a second clamping area (40) capable of clamping the ratchet (5). The left and right sides of the large end surface of the self-locking limit plate (4) are also provided with mounting rods (72) for mounting a torsion spring (71). One end of the torsion spring (71) abuts against the support plate frame (1) and the other end abuts against the self-locking limit plate (4) so ​​that it has a tendency to slide backwards.

2. The transmission line tensioning device according to claim 1, characterized in that: A torsion spring limiting hole (10c) is also provided on the upper side of the first strip-shaped hole (10b); the mounting rod (72) is located on the upper large end surface of the self-locking limiting plate (4); one end of the torsion spring (71) abuts against the support plate frame (1) and is inserted into the torsion spring limiting hole (10c); The top of the winding plate frame (2) is provided with a pressing plate surface (22), which is connected to the left and right winding plates (20), and the front end is provided with a downwardly bent positioning plate surface (23), and the positioning plate surface (23) is provided with a positioning hole facing the mounting column (31), the front end of the mounting column (31) is inserted into the positioning hole, and the front end of the first compression spring (70) is against the positioning plate surface (23).

3. The transmission line tensioning device according to claim 1, characterized in that: The lower rear portion of the winding plate (20) is provided with a snap-in opening (25) which can be latched by the second snap-in area (40).

4. The transmission line tensioning device according to claim 3, characterized in that: The handle (21) is a round tube structure, and locking holes (10d) are provided on the two mounting plates (10); when the handle (21) is pressed down, the locking holes (10d) can be aligned with the tube openings on both sides of the handle (21), and the second clamping area (40) is clamped into the clamping hole (25); and a locking shaft can be inserted into the handle (21) and the locking holes (10d) on both sides.

5. The transmission line tensioning device according to claim 1, characterized in that: A manual operating portion (41) is provided at the rear side of the self-locking limit plate (4).

6. The transmission line tensioning device according to claim 1, characterized in that: The connecting plate (11) is provided with a front guide hole (11a); the upper and lower sides of the two mounting plates (10) are respectively provided with a bottom plate (12) and a top plate (13); the bottom plate (12) and the top plate (13) and the left and right mounting plates (10) form a guide groove (10e); It also includes a movable plate (8) disposed at the rear side of the connecting plate (11) and slidably inserted into the guide grooves (10e) on both sides, and a rear guide hole directly opposite to the front guide hole (11a) is provided on the movable plate (8); a connecting screw (90) is observed in the front guide hole (11a) and the rear guide hole; the rear end of the connecting screw (90) passes through the rear guide hole and is installed with an anti-drop nut (91) A compression spring is also provided on the connecting screw rod (90), the front end of the compression spring abuts against the connecting plate (11) and the rear end of the compression spring abuts against the movable plate (8).

7. The transmission line tensioning device according to claim 6, characterized in that: Auxiliary limiting rods (92) are respectively arranged on the left and right sides of the rear guide hole; a through hole for the auxiliary limiting rod (92) to pass through is arranged on the front side of the connecting plate (11); The auxiliary limiting rod (92) is inserted into the through hole, and a return spring is sleeved on the auxiliary limiting rod (92), wherein the front end of the return spring abuts against the connecting plate (11) and the rear side thereof abuts against the movable plate (8).

8. The transmission line tensioning device according to claim 1, characterized in that: A locking screw hole (60e) is provided on the clamping plate (60) on at least one side of the wire clamp (6), and a locking bolt is provided in the locking screw hole (60e).

9. The transmission line tensioning device according to claim 8, characterized in that: The inner wall surface of the clamping plate (60) is provided with an anti-slip pattern directly facing the locking screw hole (60e).

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