Automatic tensioning mechanism for steel wire rope

Abstract

Provided is a steel wire rope automatic tensioning mechanism. The steel wire rope can be lengthened after being used for a period of time, so that the steel wire rope slides out of a rope wheel. The device comprises a front support (4) and a rear support (14), the front support and the rear support are fixedly connected through two guide rods (10), two fixed wheel sets are fixed to the front support, an adjusting frame is connected to the two guide rods in a sliding mode and can slide front and back along the guide rods, a movable plate (12) is arranged on the two guide rods in a sleeved mode, and the movable plate (12) is connected with the fixed wheel sets in a sliding mode and can slide back and forth along the guide rods. A movable wheel set is fixed to the movable plate, and each guide rod is sleeved with a spring assembly and pressed between the sliding plate of the adjusting frame and the movable plate. The automatic tensioning device is used for automatically tensioning the steel wire rope.

Description

Technical Field

[0001] The utility model relates to an automatic wire rope tensioning mechanism. Background Art

[0002] Since the system bending and ring-pushing device uses a wire rope to pull a trolley to assist in pushing the pipe into shape during the bending process to reduce the bending torque of the main bending machine, the wire rope will be stretched after a period of use, causing the wire rope to be pulled out of the rope wheel. Utility Model Content

[0003] The utility model aims to solve the above-mentioned problems and provide an automatic wire rope tensioning mechanism.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A wire rope automatic tensioning mechanism, which comprises a front bracket and a rear bracket, wherein the front bracket and the rear bracket are connected and fixed via two guide rods, two fixed wheel groups are fixed on the front bracket, and an adjustment frame is slidably connected to the two guide rods, and movable plates are sleeved on the two guide rods, and a movable wheel group is fixed on the movable plate, and each guide rod is sleeved with a spring assembly pressed between the slide plate and the movable plate of the adjustment frame.

[0006] The automatic wire rope tensioning mechanism, the adjustment frame comprises a slide plate and a slider, and the slide plate and the slider are connected via a pull rod.

[0007] The automatic wire rope tensioning mechanism is connected to the adjusting nut through a thrust ball bearing on the rear bracket, and the screw rod passes through the adjusting nut and the rear bracket and is threadedly connected to the fixing nut on the slider.

[0008] The described steel wire rope automatic tensioning mechanism, the described spring assembly comprises a loop sleeved on the described guide rod and two compression springs sleeved on the described guide rod. Beneficial Effects

[0009] 1. The utility model can automatically tension the steel wire rope, thus avoiding the possibility of the steel wire rope being pulled out of the rope wheel.

[0010] 2. In the utility model, four springs with a diameter of 6 mm are arranged between the slide plate and the movable plate. Since the springs on the guide rod are connected in series in pairs, the spring coefficient is larger than that of a single spring used directly. The springs are pre-compressed during installation. As the wire rope stretches during use, the elastic potential energy of the spring is gradually released, so that the wire rope is always in an automatically tensioned state, avoiding the possibility of being scratched from the rope pulley groove.

[0011] 3. The two fixed wheel sets and one movable wheel set of the utility model are in the same horizontal plane, and the left-right spacing between the two fixed wheel sets is just enough to ensure that there is no tension angle when the wire rope is tensioned, thereby ensuring the running stability of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a top view of the utility model;

[0013] Attached Figure 2 It is a side view of the utility model;

[0014] Attached Figure 3 Yes Figure 1 AA section view;

[0015] In the figure: 1. wheel seat; 2. wire rope; 3. perforation; 4. front bracket; 5. slide plate; 6. pull rod; 7. slipper; 8. movable wheel set; 9. compression spring; 10. guide rod; 11. slider; 12. movable plate; 14. rear bracket; 15. adjusting nut; 16. fixing nut; 18. screw rod; 19. rope pulley; 23 deep groove ball bearing; 24. anchor bolt; 26. wheel axle; 28. thrust ball bearing; 29. ​​handle; 30. adjusting nut. DETAILED DESCRIPTION

[0016] Reference Figure 1-Figure 3 A wire rope automatic tensioning mechanism, which consists of a front bracket 4 and a rear bracket 14, the front bracket and the rear bracket are connected and fixed by two guide rods 10, and the front bracket, the rear bracket and the guide rods are connected and fixed to the ground with M16×300 anchor bolts 24 to ensure the overall force balance of the device, two fixed wheel groups are fixed on the front bracket, and the two guide rods are slidably connected with an adjustment frame, and the adjustment frame can slide back and forth along the guide rods, and the two guide rods are sleeved with a movable plate 12, and the movable plate is fixed with a movable wheel group, and each of the guide rods is sleeved with a spring assembly pressed between the slide plate and the movable plate of the adjustment frame.

[0017] The adjustment frame includes a slide plate 5 and a slider 11, and the slide plate and the slider are connected via a pull rod 6;

[0018] The spring assembly includes a looper 7 sleeved on the guide rod and two compression springs 9 sleeved on the guide rod;

[0019] Four springs with a diameter of 6 mm are set between the slide plate and the movable plate. Since the springs on the guide rod are connected in series in pairs, the spring coefficient is larger than that of a single spring used directly. The springs are pre-compressed during installation. As the wire rope stretches during use, the elastic potential energy of the spring is gradually released, so that the wire rope is always in an automatically tensioned state, avoiding the possibility of being pulled out of the rope wheel groove;

[0020] The rear bracket is connected to the adjusting screw nut 30 through a thrust ball bearing 28, the handle is threadedly connected to the adjusting screw nut, the screw rod 18 passes through the adjusting screw nut and the rear bracket and is threadedly connected to the fixing nut 16 on the slider, and the tail of the adjusting screw rod is designed as a "T"-shaped structure embedded in the slider to prevent the screw rod from rotating with the adjusting screw nut when the adjusting screw nut rotates;

[0021] When the compression of the spring is reduced too much, first screw the adjusting nut 15 to move it to the left, and rotate the adjusting nut by holding the handle. The adjusting nut is threadedly connected to the screw rod to move the adjusting frame to the right as a whole, thereby increasing the elastic potential energy reserve of the spring and compressing the spring again. The fixed wheel group and the movable wheel group have the same structure, both of which include a wheel seat 1, a rope pulley 19 and a wheel axle 26. The rope pulley and the wheel axle are connected by a deep groove ball bearing 23, and the wheel axle is fixed to the wheel seat. The three groups of rope pulleys of the same size are in the same horizontal plane, and the left and right spacing of the two fixed wheel groups is just enough to ensure that there is no tension angle when the wire rope is tensioned, thereby ensuring the stability of the wire rope operation.

[0022] After installation, the use effect is good. The maintenance personnel only need to check regularly every month instead of adjusting it several times a week, which greatly reduces the workload of the maintenance personnel.

Claims

1. A steel wire rope automatic tensioning mechanism, characterized by: It comprises a front bracket and a rear bracket, wherein the front bracket and the rear bracket are connected and fixed by two guide rods, two fixed wheel groups are fixed on the front bracket, and an adjustment frame is slidably connected to the two guide rods, and a movable plate is sleeved on the two guide rods, and a movable wheel group is fixed on the movable plate, and each guide rod is sleeved with a spring assembly pressed between the slide plate and the movable plate of the adjustment frame.

2. The automatic wire rope tensioning mechanism according to claim 1 is characterized in that: The adjustment frame comprises a slide plate and a slider, and the slide plate and the slider are connected via a pull rod.

3. The automatic wire rope tensioning mechanism according to claim 2 is characterized in that: The rear bracket is connected with the adjusting screw nut through a thrust ball bearing, and the screw rod passes through the adjusting screw nut and the rear bracket and is threadedly connected with the fixing nut on the sliding block.

4. The automatic wire rope tensioning mechanism according to claim 3 is characterized in that: The spring assembly comprises a loop sleeved on the guide rod and two compression springs sleeved on the guide rod.

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