Tensioning machine for power dispatching and grid construction

Abstract

The invention discloses a tensioning machine for electric power dispatching grid construction, which belongs to the field of electric power dispatching grid construction. The tensioning machine comprises a machine base, a traction disc frame and a driving motor. A traction seat is horizontally slidably mounted on the upper end of the machine base, an elastic stretching assembly is mounted between the traction seat and the machine base, a transmission mechanism comprising a clutch assembly and a reversing assembly is mounted between the output end of the driving motor and the traction disc frame, a one-way limit assembly is mounted on the traction disc frame, and when a cable is subjected to a relatively large external resistance, the traction disc frame slides horizontally with the traction seat in the opposite direction of the traction of the cable until the clutch assembly is opened, at which time the traction disc frame loses the driving effect of the driving motor, and the one-way limit assembly is coordinated to keep the traction disc frame in a stationary state, and will not continue to generate traction force on the cable, thereby avoiding cable damage, and the protective effect is more stable and reliable.

Description

Technical Field

[0001] The invention relates to a tensioning machine, in particular to a tensioning machine for electric power dispatching power grid construction in the field of electric power dispatching power grid construction. Background Art

[0002] Tensioning machine is a general term for traction machine and tension machine used for tensioning wire. Tensioning machine is mainly used in the construction of power lines, especially in the construction of ultra-high voltage transmission lines. It includes two types of equipment: traction machine and tension machine. The traction machine is used to pull the wire or optical cable, while the tension machine is used to control the tension of the wire to ensure the quality and safety of line laying.

[0003] For example, the specification of patent announcement number CN110459986B discloses a tensioning machine for electric power dispatching grid construction, which includes a base, a tensioning device, an adjusting device and a parking device. Universal wheels are installed at the four corners of the lower surface of the base, a tensioning device is fixedly installed at the left end of the upper surface of the base, an adjusting device is fixedly installed at the middle position of the upper surface of the base, a groove is provided in the middle position of the lower surface of the base, and parking devices are fixedly installed at the four corners of the top wall in the groove. During use, the surface of the cable will not be worn, thereby avoiding a reduction in the service life of the cable. The adjusting device can timely adjust the tension of the cable according to the usage conditions to avoid sagging or tension of the cable. The parking device can stop the tensioning machine from moving, thereby ensuring the stability of the tensioning machine and avoiding the cable from being pulled and damaged due to slippage of the tensioning machine, thereby improving the working efficiency of the tensioning machine.

[0004] Based on the above search and in combination with the prior art, it is found that most of the existing tensioning machines rely on various sensors to detect the traction tension, but the sensors are prone to failure. During the period of sensor failure, once the cable encounters a large resistance during the traction process, and the motor is still in the state of driving the traction disc to rotate, it is easy to cause excessive tension, thereby causing cable damage. Therefore, a tensioning machine is proposed for the construction of an electric power dispatching grid to improve the above problems. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that most of the existing tensioning machines rely on various sensors to detect the traction tension, but the sensors are prone to failure. During the period of sensor failure, once the cable encounters a large resistance during the traction process, and the motor is still in a state of driving the traction disk to rotate, it is easy to cause excessive tension, thereby causing cable damage.

[0006] In order to solve the above problems, the present invention provides a tensioning machine for electric power dispatching grid construction, comprising a machine base, a traction disc frame and a driving motor:

[0007] A traction seat is horizontally slidably mounted on the upper end of the machine base, an elastic stretching assembly is mounted between the traction seat and the machine base, a traction disc frame is rotatably mounted on the inner side of the traction seat, a drive motor is mounted on the upper end of the machine base, and a transmission mechanism is mounted between the output end of the drive motor and the rotating shaft of the traction disc frame;

[0008] The transmission mechanism includes a clutch assembly and a reversing assembly. The clutch assembly is installed at the output end of the drive motor. The rotating shaft of the traction disc frame is connected to the clutch assembly through the reversing assembly. A one-way limit assembly is installed on the rotating shaft of the traction disc frame so that:

[0009] The driving motor drives the traction disc frame to rotate through the reversing assembly and the clutch assembly. During the cable traction process, when the cable is subjected to greater external resistance, the traction disc frame slides horizontally with the traction seat in the opposite direction of the cable traction until the clutch assembly opens. At this time, the traction disc frame loses the driving action of the driving motor, and cooperates with the one-way limit assembly to make the traction disc frame stationary.

[0010] In the above-mentioned tensioning machine for electric power dispatching grid construction, through the coordinated arrangement of the traction seat, reversing assembly, clutch assembly, elastic stretching assembly and one-way limit assembly, when the driving motor drives the traction disc frame to rotate through the reversing assembly and the clutch assembly to pull the cable, when the cable is subjected to greater external resistance, the traction disc frame slides horizontally along the opposite direction of the traction of the cable with the traction seat until the clutch assembly opens. At this time, the traction disc frame loses the driving action of the driving motor, and cooperates with the one-way limit assembly to make the traction disc frame stationary and will not continue to generate traction force on the cable, thereby avoiding cable damage. Through the coordinated arrangement of the above-mentioned structure, during the operation of the tensioning machine, even if the relevant sensor equipment fails, it will not cause cable damage, thereby making the operation of the tensioning machine more stable and reliable.

[0011] As a further supplement to the present application, a limiting slider is integrally provided at the lower end of the traction seat, and a limiting slide groove slidably matched with the limiting slider is provided at the upper end of the machine base.

[0012] As a further supplement to the present application, the elastic stretching assembly includes a fixed boss and an elastic stretching member, the fixed boss is fixed on the machine base, and the fixed boss is located on the side of the traction seat away from the cable, and the elastic stretching member is horizontally fixed between the fixed boss and the traction seat; during normal traction, the traction seat is located close to the drive motor under the action of the elastic stretching member, the clutch assembly is in a closed state, and the drive motor can drive the traction disc frame to rotate through the reversing assembly and the clutch assembly to pull the cable.

[0013] As a further supplement to the present application, a storage groove capable of completely accommodating the elastic stretching member is provided at the side end of the fixed protrusion close to the traction seat; during normal traction, the elastic stretching member is accommodated in the storage groove, which can provide a certain degree of protection for itself.

[0014] As a further supplement to the present application, a reduction assembly is installed between the clutch assembly and the output end of the drive motor, and a drive box covering the outside of the drive motor and the reduction assembly is installed at the upper end of the machine base;

[0015] The deceleration assembly includes a first pulley, a second pulley and a transmission belt. The first pulley is coaxially fixed with the output end of the driving motor. The second pulley is rotatably installed on the inner side of the driving box and is connected to the clutch assembly. The transmission belt is connected between the first pulley and the second pulley. The diameter of the first pulley is smaller than the diameter of the second pulley.

[0016] As a further supplement to the present application, the clutch assembly includes a limit sleeve and a limit slide column. The limit sleeve is coaxially fixed with the second pulley, and the limit slide column slides horizontally on the inner side of the limit sleeve, and the sliding direction is consistent with the traction direction of the cable. The end of the limit slide column located on the outer side of the limit sleeve is connected to the reversing assembly; the elastic stretching piece and the limit sleeve and the limit slide column slide in cooperation with each other, when the cable is subject to greater external resistance, the traction disc frame slides horizontally with the traction seat in the opposite direction of the traction of the cable, and the elastic stretching piece stretches until the limit sleeve is separated from the limit slide column. At this time, the traction disc frame loses the driving action of the drive motor and will not continue to generate traction on the cable, thereby avoiding cable damage.

[0017] As a further supplement to the present application, a protective box 1 is installed on the side end of the traction seat and is covered on the outside of the reversing assembly. The reversing assembly includes a first bevel gear and a second bevel gear. The first bevel gear is rotatably installed on the inner side of the protective box 1 and is coaxially fixed with the limiting sliding column. The second bevel gear is coaxially fixed with the rotating shaft of the traction disc frame and is meshed with the first bevel gear.

[0018] As a further supplement to the present application, the one-way limit assembly includes a ratchet and a pawl, the ratchet is coaxially fixed with the rotating shaft of the traction disc frame, a mounting frame is installed on the upper end of the side of the machine base away from the fixed convex seat, the pawl is rotatably mounted on the side end of the mounting frame, and a torsion spring is installed between the pawl and the mounting frame;

[0019] The side end of the traction seat is equipped with a protective box 2 which is covered on the outside of the ratchet, and the side end of the protective box 2 near the mounting frame is provided with an opening for the ratchet to be inserted; when the cable is subjected to greater external resistance, the traction disc frame slides horizontally with the traction seat in the opposite direction of the traction of the cable until the limit sleeve is separated from the limit sliding column. At this time, the traction disc frame loses the driving effect of the drive motor. At the same time, the ratchet and the pawl cooperate to prevent the traction disc frame from reversing under the reverse effect of the elastic stretching member on the traction seat, so that the traction disc frame is in a stationary state and will not continue to generate traction on the cable, thereby avoiding cable damage.

[0020] As a further supplement to the present application, auxiliary fixing rods are vertically threaded through the four corners of the machine base; when working in the field, the auxiliary fixing rods can be used to drill into the ground to fix the machine base.

[0021] In summary, through the coordinated arrangement of the traction seat, the reversing assembly, the clutch assembly, the elastic stretching assembly and the one-way limit assembly, during normal traction, the traction seat is located close to the drive motor under the action of the elastic stretching member, the clutch assembly is in a closed state, and the drive motor can drive the traction disc frame to rotate through the deceleration assembly, the reversing assembly and the clutch assembly to pull the cable; when the cable is subjected to greater external resistance, the traction disc frame slides horizontally along the opposite direction of the traction of the cable with the traction seat until the limit sleeve is separated from the limit sliding column, and the limit sleeve cannot rotate with the limit sliding column under the driving action of the drive motor. At the same time, the ratchet and the pawl cooperate to prevent the traction disc frame from reversing under the reverse action of the elastic stretching member on the traction seat, so that the traction disc frame is in a stationary state and will not continue to generate traction on the cable, thereby avoiding cable damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the first embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application in a state where the drive box and the protection box are removed;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application with the fifth wheel removed;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application when the fifth wheel is viewed from above;

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the fifth wheel in the first embodiment of the present application in a side view;

[0027] Figure 6 This is a schematic diagram of the planar structure of the first embodiment of the present application in a normal traction state;

[0028] Figure 7 This is a schematic diagram of the planar structure of the first embodiment of the present application under an over-tension state.

[0029] Explanation of the numbers in the figure: 1. Machine base; 101. Limit slide groove; 2. Traction seat; 201. Limit slider; 3. Traction disc frame; 4. Drive box; 5. Drive motor; 6. Speed ​​reduction assembly; 61. First pulley; 62. Second pulley; 63. Transmission belt; 7. Clutch assembly; 71. Limit sleeve; 72. Limit slide column; 8. Protection box one; 9. Reversing assembly; 91. First bevel gear; 92. Second bevel gear; 10. Fixed boss; 1001. Storage groove; 11. Elastic stretching member; 12. Ratchet; 13. Mounting frame; 14. Ratchet; 15. Protection box two; 1501. Opening; 16. Auxiliary fixing rod. DETAILED DESCRIPTION

[0030] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0031] The first embodiment: The present invention provides a tensioning machine for electric power dispatching and grid construction, such as Figure 1-Figure 7 As shown, it includes a machine base 1, a traction disc frame 3 and a driving motor 5. The upper end of the machine base 1 is horizontally slidably mounted with a traction seat 2. Specifically, a limiting slider 201 is integrally arranged at the lower end of the traction seat 2. The upper end of the machine base 1 is provided with a limiting slide groove 101 that slidably cooperates with the limiting slider 201. An elastic stretching component is installed between the traction seat 2 and the machine base 1. The traction disc frame 3 is rotatably mounted on the inner side of the traction seat 2. The driving motor 5 is installed at the upper end of the machine base 1. A transmission mechanism is installed between the output end of the driving motor 5 and the rotating shaft of the traction disc frame 3.

[0032] Among them, the transmission mechanism includes a clutch assembly 7 and a reversing assembly 9. The clutch assembly 7 is installed at the output end of the driving motor 5. The rotating shaft of the traction disc frame 3 is connected to the clutch assembly 7 through the reversing assembly 9. A one-way limit assembly is installed on the rotating shaft of the traction disc frame 3, so that the driving motor 5 drives the traction disc frame 3 to rotate through the reversing assembly 9 and the clutch assembly 7. During the cable traction process, when the cable is subjected to a large external resistance, the traction disc frame 3 slides horizontally with the traction seat 2 in the opposite direction of the cable traction until the clutch assembly 7 is opened. At this time, the traction disc frame 3 loses the driving effect of the driving motor 5, and cooperates with the one-way limit assembly to make the traction disc frame 3 in a stationary state.

[0033] In the tensioning machine for electric power dispatching grid construction, through the coordinated arrangement of the traction seat 2, the reversing assembly 9, the clutch assembly 7, the elastic stretching assembly and the one-way limit assembly, the driving motor 5 drives the traction disc frame 3 to rotate through the reversing assembly 9 and the clutch assembly 7 to pull the cable. When the cable is subjected to greater external resistance, the traction disc frame 3 slides horizontally along the opposite direction of the traction of the cable with the traction seat 2 until the clutch assembly 7 opens. At this time, the traction disc frame 3 loses the driving effect of the driving motor 5, and cooperates with the one-way limit assembly to make the traction disc frame 3 in a stationary state, and will not continue to generate traction force on the cable, thereby avoiding cable damage. Through the coordinated arrangement of the above-mentioned structure, during the operation of the tensioning machine, even if the relevant sensor equipment fails, it will not cause cable damage, thereby making the operation of the tensioning machine more stable and reliable.

[0034] Among them, the elastic stretching component includes a fixed boss 10 and an elastic stretching piece 11, the fixed boss 10 is fixed on the machine base 1, and the fixed boss 10 is located on the side of the traction seat 2 away from the cable, the elastic stretching piece 11 is horizontally fixed between the fixed boss 10 and the traction seat 2, and the side end of the fixed boss 10 close to the traction seat 2 is provided with a storage groove 1001 that can completely accommodate the elastic stretching piece 11, wherein the elastic stretching piece 11 can adopt a tension spring.

[0035] During normal traction, the elastic stretching member 11 is stored in the storage groove 1001, which can provide a certain degree of protection for itself. The traction seat 2 is located close to the drive motor 5 under the action of the elastic stretching member 11, and the clutch assembly 7 is in a closed state. The drive motor 5 can drive the traction disc frame 3 to rotate through the reversing assembly 9 and the clutch assembly 7 to pull the cable.

[0036] Among them, a reduction assembly 6 is installed between the clutch assembly 7 and the output end of the drive motor 5, and a drive box 4 is installed on the upper end of the base 1, which is covered on the outside of the drive motor 5 and the reduction assembly 6. The reduction assembly 6 includes a first pulley 61, a second pulley 62 and a transmission belt 63. The first pulley 61 is coaxially fixed to the output end of the drive motor 5, and the second pulley 62 is rotatably installed on the inner side of the drive box 4 and is connected to the clutch assembly 7. The transmission belt 63 is transmission-connected between the first pulley 61 and the second pulley 62. The diameter of the first pulley 61 is smaller than the diameter of the second pulley 62. The reduction assembly 6 is arranged to reduce the rotation speed and increase the output torque.

[0037] Among them, the clutch assembly 7 includes a limiting sleeve 71 and a limiting slide 72. The limiting sleeve 71 is coaxially fixed with the second pulley 62. The limiting slide 72 slides horizontally on the inner side of the limiting sleeve 71, and the sliding direction is consistent with the pulling direction of the cable. The end of the limiting slide 72 located on the outer side of the limiting sleeve 71 is connected to the reversing assembly 9.

[0038] Based on the above elastic stretching member 11 and the sliding cooperation between the limiting sleeve 71 and the limiting slide post 72, when the cable is subjected to greater external resistance, the traction disc frame 3 can slide horizontally with the traction seat 2 along the opposite direction of the traction of the cable, and the elastic stretching member 11 can be stretched until the limiting sleeve 71 is separated from the limiting slide post 72. At this time, the traction disc frame 3 loses the driving action of the driving motor 5 and will not continue to generate traction on the cable, thereby avoiding cable damage.

[0039] Among them, the side end of the traction seat 2 is installed with a protective box 8 covering the outside of the reversing component 9. The reversing component 9 includes a first bevel gear 91 and a second bevel gear 92. The first bevel gear 91 is rotatably installed on the inner side of the protective box 8 and is coaxially fixed with the limiting slide 72. The second bevel gear 92 is coaxially fixed with the rotating shaft of the traction disc frame 3 and meshes with the first bevel gear 91. The first bevel gear 91 and the second bevel gear 92 cooperate to play a reversing drive role.

[0040] Among them, the one-way limit assembly includes a ratchet 12 and a pawl 14, the ratchet 12 is coaxially fixed with the rotating shaft of the traction disc frame 3, a mounting frame 13 is installed on the upper end of the side of the machine base 1 away from the fixed boss 10, the pawl 14 is rotatably installed on the side end of the mounting frame 13, and a torsion spring is installed between the pawl 14 and the mounting frame 13, and a protective box 15 covering the outside of the ratchet 12 is installed on the side end of the traction seat 2, and an opening 1501 for inserting the pawl 14 is set on the side end of the protective box 15 near the side end of the mounting frame 13.

[0041] When the cable is subject to greater external resistance, the traction disc frame 3 slides horizontally with the traction seat 2 in the opposite direction of the cable traction until the limiting sleeve 71 is separated from the limiting slide post 72, and the ratchet 12 cooperates with the pawl 14 to prevent the traction disc frame 3 from reversing under the reverse action of the elastic stretching member 11 on the traction seat 2, so that the traction disc frame 3 is in a stationary state and will not continue to generate traction force on the cable, thereby avoiding cable damage.

[0042] Among them, auxiliary fixing rods 16 are vertically threaded through the four corners of the machine base 1. When working in the field, the auxiliary fixing rods 16 can be used to drill into the ground to fix the machine base 1.

[0043] Working principle: During normal traction, Figure 6 As shown, the traction seat 2 is located near the driving motor 5 under the action of the elastic stretching member 11, the clutch assembly 7 is in a closed state, and the driving motor 5 can drive the traction disc frame 3 to rotate through the reduction assembly 6, the reversing assembly 9 and the clutch assembly 7 to pull the cable;

[0044] When the cable is subjected to a large external resistance, the tension on it is too large, and the traction disc frame 3 slides horizontally with the traction seat 2 in the opposite direction of the cable traction until the limiting sleeve 71 is separated from the limiting slide post 72, and the limiting sleeve 71 cannot rotate with the limiting slide post 72 under the driving action of the driving motor 5. At the same time, the ratchet 12 cooperates with the pawl 14 to prevent the traction disc frame 3 from reversing under the reverse action of the elastic stretching member 11 on the traction seat 2. Figure 7 As shown, the traction drum frame 3 is in a stationary state and will not continue to generate traction force on the cable, thereby avoiding cable damage.

[0045] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A tensioning machine for electric power dispatching and grid construction, comprising a machine base (1), a traction disc frame (3) and a drive motor (5), characterized in that: A traction seat (2) is horizontally slidably mounted on the upper end of the machine base (1); an elastic stretching assembly is mounted between the traction seat (2) and the machine base (1); the traction disc frame (3) is rotatably mounted on the traction seat (2); the drive motor (5) is mounted on the machine base (1); and a transmission mechanism is mounted between the output end of the drive motor (5) and the rotating shaft of the traction disc frame (3); The transmission mechanism comprises a clutch assembly (7) and a reversing assembly (9); the clutch assembly (7) is mounted on the output end of the drive motor (5); the rotating shaft of the traction disc frame (3) and the clutch assembly (7) are connected via the reversing assembly (9); and a one-way limit assembly is mounted on the rotating shaft of the traction disc frame (3); The driving motor (5) drives the traction disc frame (3) to rotate via the reversing assembly (9) and the clutch assembly (7). When the cable is pulled by external resistance, the traction disc frame (3) slides horizontally with the traction seat (2) in the opposite direction of the cable pulling until the clutch assembly (7) is opened. At this time, the traction disc frame (3) loses the driving effect of the driving motor (5) and cooperates with the one-way limit assembly to make the traction disc frame (3) in a stationary state. A reduction assembly (6) is installed between the clutch assembly (7) and the output end of the drive motor (5), and a drive box (4) is installed on the upper end of the machine base (1) and is arranged to cover the outside of the drive motor (5) and the reduction assembly (6); The deceleration assembly (6) comprises a first pulley (61), a second pulley (62) and a transmission belt (63); the first pulley (61) is coaxially fixed with the output end of the drive motor (5); the second pulley (62) is rotatably mounted on the inner side of the drive box (4) and connected to the clutch assembly (7); the transmission belt (63) is transmission-connected between the first pulley (61) and the second pulley (62); the diameter of the first pulley (61) is smaller than the diameter of the second pulley (62); The clutch assembly (7) comprises a limiting sleeve (71) and a limiting sliding column (72); the limiting sleeve (71) is coaxially fixed with the second pulley (62); the limiting sliding column (72) is horizontally slidably connected to the inner side of the limiting sleeve (71), and the sliding direction is consistent with the pulling direction of the cable; the end of the limiting sliding column (72) located outside the limiting sleeve (71) is connected to the reversing assembly (9).

2. The tensioning machine for electric power dispatching grid construction according to claim 1, characterized in that: A limiting slide block (201) is integrally provided at the lower end of the traction seat (2), and a limiting slide groove (101) that slidably cooperates with the limiting slide block (201) is provided at the upper end of the machine seat (1).

3. The tensioning machine for electric power dispatching grid construction according to claim 1, characterized in that: The elastic stretching assembly comprises a fixed convex seat (10) and an elastic stretching member (11); the fixed convex seat (10) is fixed on the machine base (1), and the fixed convex seat (10) is located on a side of the traction seat (2) away from the cable; the elastic stretching member (11) is horizontally fixed between the fixed convex seat (10) and the traction seat (2).

4. The tensioning machine for electric power dispatching grid construction according to claim 3, characterized in that: A receiving groove (1001) capable of completely receiving the elastic stretching member (11) is provided at a side end of the fixing protrusion (10) close to the traction seat (2).

5. The tensioning machine for electric power dispatching grid construction according to claim 1, characterized in that: A protective box (8) is mounted on the side end of the traction seat (2) and is covered on the outside of the reversing assembly (9). The reversing assembly (9) comprises a first bevel gear (91) and a second bevel gear (92). The first bevel gear (91) is rotatably mounted on the inner side of the protective box (8) and is coaxially fixed to the limiting slide post (72). The second bevel gear (92) is coaxially fixed to the rotating shaft of the traction disc frame (3) and is meshed with the first bevel gear (91).

6. The tensioning machine for electric power dispatching grid construction according to claim 1, characterized in that: The one-way limiting assembly comprises a ratchet (12) and a pawl (14); the ratchet (12) is coaxially fixed with the rotating shaft of the traction disc frame (3); a mounting frame (13) is mounted on the machine base (1); the pawl (14) is rotatably mounted on a side end of the mounting frame (13); and a torsion spring is installed between the pawl (14) and the mounting frame (13); A second protection box (15) is installed at the side end of the traction seat (2) and is arranged to cover the outside of the ratchet (12). The second protection box (15) is provided with an opening (1501) for inserting the ratchet pawl (14) at the side end close to the mounting frame (13).

7. The tensioning machine for electric power dispatching grid construction according to claim 1, characterized in that: Auxiliary fixing rods (16) are vertically threadedly penetrated on all sides of the machine base (1).

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