Cableway tensioning device

Abstract

The utility model relates to a cableway tensioning device which comprises a machine frame, a sliding frame is installed in the center of the machine frame in a sliding mode through a lead screw along a rail, and a cableway driving wheel is fixedly installed in the center of the sliding frame. The cableway tensioning device is characterized in that a first guide sliding plate is fixedly installed on the lower side wall of the sliding frame, and a second guide sliding plate is fixedly installed on one side of the first guide sliding plate; a pair of guide wheels are installed on the first guide sliding plate and located on the two sides of the track in a rolling mode, guide wheels are installed on the second guide sliding plate and located on one side of the track, a detection box is installed on the second guide sliding plate and located on the other side of the track, a boss is installed on one side of the detection box and located on the side wall of the track, and a limiting switch arranged in the detection box can make contact with the boss. The detection box synchronously moves along with the cableway driving wheel, and the limit switch in the detection box contacts the boss to prompt an operator to stop motor operation after triggering, so that the condition that the inhaul cable is excessively adjusted to exceed the tensile limit of the inhaul cable is avoided, and the safety performance of the inhaul cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial ropeways, in particular to a ropeway tensioning device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] After the cableway has been running for a period of time, the wire rope is stretched, and problems such as lengthening and loosening may occur. The tensioning system provides tension for the driving wire rope to ensure stable friction between the driving wire rope and the driving mechanism so that the entire system can operate normally.

[0004] There are three main types of cableway tensioning systems at present: weight tensioning and hydraulic tensioning winch tensioning. The weight tensioning system uses a combination of a counterweight and a pulley system to adjust the tension. It is inconvenient to install due to terrain conditions, and it is difficult to adjust manually due to the heavy weight of the weight. Although the hydraulic tensioning system has a simple installation structure and flexible adjustment, it requires a large investment. The above two cableway tensioning systems have the disadvantages of being inconvenient to install and expensive.

[0005] The loading device applicable to small cableways in the prior art refers to a movable freight cableway device with a publication number of CN217556574U. The cableway is tensioned by a screw transmission method. The screw can ensure an accurate transmission ratio and has a self-locking function. Compared with the weight tensioning and hydraulic tensioning winch-type tensioning methods, it is economical and easy to install. However, the following technical problems still exist. The screw tensioning device adjusts the tension of the steel cable based on manual judgment of the state of the steel cable. During the adjustment process, even if the cable has exceeded the predetermined tensioning force, the screw can still stretch and tension the cable. It is very easy for the tensioning force to be adjusted too large and exceed the tensile limit of the cable. For cableways with long spans and large loads, a larger tensioning force will reduce the service life of the cableway and reduce the safety performance of the cable. Utility Model Content

[0006] The purpose of the utility model is to provide a cableway tensioning device, which can at least solve one of the above technical problems.

[0007] To achieve the above-mentioned purpose, a cableway tensioning device includes a frame, a sliding frame is installed in the center of the frame for sliding along a track through a screw rod, a cableway driving wheel is fixedly installed in the center of the sliding frame, a first guide slide is fixedly installed on the lower side wall of the sliding frame, a second guide slide is fixedly installed on one side of the first guide slide, a pair of guide wheels are rollingly installed on the first guide slide and located on both sides of the track, a guide wheel is installed on the second guide slide and located on one side of the track, a detection box is installed on the second guide slide and located on the other side of the track, a boss is installed on one side of the detection box and located on the side wall of the track, and a limit switch arranged in the detection box can contact the boss.

[0008] It is further configured that a screw rod is installed at one end of the frame, rails are arranged on both sides of the frame, and the sliding frame is installed on the rails through roller sliding.

[0009] It is further configured that a threaded barrel is installed at one end of the sliding frame, and a screw rod is installed inside the threaded barrel.

[0010] It is further configured that a motor is installed at the end of the screw rod.

[0011] It is further configured that the spacing between the centers of the guide wheels on the first guide slide is greater than the track width.

[0012] It is further configured that the distance between the guide wheel on the second guide slide and the detection box is greater than the track width.

[0013] It is further configured that the cross section of the boss is trapezoidal.

[0014] It is further configured that the limit switch is provided with a pressure wheel via a spring, the pressure wheel rolls along a track, and the pressure wheel can contact the boss.

[0015] It is further configured that a T-shaped bracket is fixedly installed at the center of the sliding frame, and a cableway driving wheel is installed below the T-shaped bracket.

[0016] It is further configured that legs are evenly distributed at four corners below the rack, and the rack is fixedly installed on the ground through the legs.

[0017] Beneficial effects of one or more of the above technical solutions:

[0018] The cableway driving wheel is driven to move and tension by a screw rod, and detection boxes are arranged on both sides of the installed cableway driving wheel sliding frame. The detection box can move synchronously with the tensioning direction of the cableway driving wheel. When the limit switch in the detection box moves to the boss, the change in the size of the boss drives the pressure wheel to move backward, compresses the spring, and triggers the switch. After the limit switch is triggered, it indicates that this is the maximum stretching amount of the cableway. The limit switch is connected to the existing buzzer for alarm. After the limit switch is triggered, the operator is prompted to stop the motor operation, thereby avoiding excessive adjustment of the cable exceeding the tensile limit of the cable, thereby improving the safety performance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2It is a structural schematic diagram of the first guide slide plate of the utility model.

[0022] Figure 3 It is a structural schematic diagram of the second guide slide plate of the utility model.

[0023] Figure 4 It is a schematic structural diagram of the limit switch and the boss of the utility model.

[0024] In the figure, 1 is a frame; 2 is a lead screw; 3 is a track; 4 is a sliding frame; 5 is a cableway driving wheel; 6 is a first guide slide; 7 is a second guide slide; 8 is a guide wheel; 9 is a detection box; 10 is a boss; 11 is a limit switch; 111 is a pressure wheel; 112 is a spring; 113 is a connecting plate; 114 is a trigger rod; 12 is a threaded cylinder; 13 is a motor; 14 is a T-shaped bracket; 15 is a leg; and 16 is a roller. DETAILED DESCRIPTION

[0025] The specific implementation of this embodiment is described below in conjunction with the accompanying drawings.

[0026] A cableway tensioning device comprises a frame 1, a sliding frame 4 is slidably installed along a track 3 through a screw rod 2 at the center of the frame 1, a cableway driving wheel 5 is fixedly installed at the center of the sliding frame 4, a first guide slide 6 is fixedly installed on the lower side wall of the sliding frame 4, a second guide slide 7 is fixedly installed on one side of the first guide slide 6, a pair of guide wheels 8 are rollingly installed on the first guide slide 6 and located on both sides of the track 3, a guide wheel 8 is installed on the second guide slide 7 and located on one side of the track 3, a detection box 9 is installed on the second guide slide 7 and located on the other side of the track 3, a boss 10 is installed on one side of the detection box 9 and on the side wall of the track 3, and a limit switch 11 arranged in the detection box 9 can contact the boss 10.

[0027] A screw rod 2 is installed at one end of the frame 1, and tracks 3 are set on both sides of the frame 1. The sliding frame 4 is slidably installed in the track 3 through rollers 16. The cross-section of the track 3 is a C-shaped channel steel, and the roller is rotatably installed in the C-shaped channel steel.

[0028] A threaded barrel 12 is installed at one end of the sliding frame 4. The screw rod 2 is sleeved and installed in the threaded barrel 12. The threaded barrel 12 is threadedly matched with the screw rod 2. The rotation of the screw rod 2 drives the threaded barrel 12 to move.

[0029] A motor 13 is installed at the end of the screw rod 2. The motor 13 adopts an existing servo motor 13. The motor 13 drives the screw rod 2 to rotate. The rotation of the screw rod 2 cooperates with the threaded cylinder 12 to make the threaded cylinder 12 move along a straight line. The threaded cylinder 12 is welded and installed on the sliding frame 4. The movement of the threaded cylinder 12 drives the sliding frame 4 to move. The sliding frame 4 drives the cableway driving wheel 5 to move, thereby lengthening the distance between the cableway driving wheel 5 and the driven wheel, thereby lengthening the cableway to achieve tensioning.

[0030] The distance between the centers of the guide wheels 8 on the first guide slide 6 is greater than the width of the track 3. The track 3 is clamped between the first guide slide 6 and the second guide slide 7, thereby limiting the detection box 9 along the direction of the track 3 and ensuring smooth movement of the detection box 9.

[0031] The distance between the guide wheel 8 on the second guide slide 7 and the detection box 9 is greater than the width of the track 3 . The setting of this distance ensures that the pressure wheel 111 of the limit switch 11 can extend out of the detection box 9 .

[0032] The cross-section of the boss 10 is trapezoidal. After the pressure wheel 111 moves from the inclined surface of the boss 10 to the plane of the boss 10, the pressure wheel 111 moves, thereby triggering the limit switch 11. The position of the boss 10 is the position of the ultimate tensile length of the cable. The processing position of the boss 10 can be changed according to different cableway lengths and materials.

[0033] The limit switch 11 is installed with a pressure wheel 111 through a spring 112. The pressure wheel 111 rolls along the track 3 and can contact the boss 10. The limit switch 11 can adopt the existing SF-7141 micro switch. When the limit switch 11 moves to the boss 10, the change in the size of the boss 10 drives the pressure wheel 111 to move backward. The pressure wheel 111 compresses the spring 112 through the connecting plate 113 installed at the rear. The connecting plate 113 triggers the switch through the trigger rod 114. After the limit switch 11 is triggered, it indicates that this is the maximum stretching amount of the cableway. The limit switch 11 is connected to the existing buzzer for alarm. After the limit switch 11 is triggered, the operator is prompted to stop the operation of the motor 13.

[0034] A T-shaped bracket 14 is fixedly installed at the center of the sliding frame 4, and the T-shaped bracket 14 is welded to the inner wall of the sliding frame 4. A cableway driving wheel 5 is installed below the T-shaped bracket 14. The installation of the downward driving wheel is completed through the T-shaped bracket, and the sliding frame 4 will not interfere with the cableway driving wheel 5.

[0035] The four corners of the frame 1 are evenly distributed with legs 15, and the frame 1 is fixedly mounted on the ground through the legs 15. The lower part of the legs 15 can be welded to the cableway platform to ensure support for the tensioning device above.

[0036] The tensioning process is as follows:

[0037] The servo motor 13 is turned on to drive the movable screw 2 to rotate. The rotation of the screw 2 cooperates with the threaded barrel 12 to make the threaded barrel 12 move along a straight line. The threaded barrel 12 is welded and installed on the sliding frame 4. The movement of the threaded barrel 12 drives the sliding frame 4 to move. The sliding frame 4 drives the cableway driving wheel 5 to move, thereby lengthening the distance between the cableway driving wheel 5 and the driven wheel, thereby lengthening the cableway to achieve tensioning.

[0038] The track 3 is stuck between the guide wheels 8 on the first guide slide 6, so as to limit the detection box 9 along the direction of the track 3, ensuring that the moving path of the detection box 9 will not deviate from the direction of the cableway driving wheel tensioning wheel, thereby improving the detection stability of the limit switch. When the limit switch 11 moves to the boss 10, the change in the size of the boss 10 drives the pressure wheel 111 to move backward, compressing the spring 112 and triggering the switch. After the limit switch 11 is triggered, it indicates that this is the maximum stretching amount of the cableway. The limit switch 11 is connected to the existing buzzer for alarm. After the limit switch 11 is triggered, the operator is prompted to stop the operation of the motor 13.

[0039] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A cableway tensioning device, comprising a frame, a sliding frame is installed in the center of the frame through a screw rod along a track, and a cableway driving wheel is fixedly installed in the center of the sliding frame, characterized in that: The first guide slide is fixedly installed on the lower side wall of the sliding frame, the second guide slide is fixedly installed on one side of the first guide slide, a pair of guide wheels are roamingly installed on the first guide slide and located on both sides of the track, guide wheels are installed on the second guide slide and located on one side of the track, a detection box is installed on the second guide slide and located on the other side of the track, a boss is installed on one side of the detection box and located on the side wall of the track, and a limit switch arranged in the detection box can contact the boss.

2. The cableway tensioning device according to claim 1, characterized in that: A screw rod is installed at one end of the frame, and tracks are arranged on both sides of the frame. The slide frame is installed on the track through roller sliding.

3. The cableway tensioning device according to claim 2, characterized in that: A threaded barrel is installed at one end of the sliding frame, and a screw rod is sleeved in the threaded barrel.

4. The cableway tensioning device according to claim 3, characterized in that: A motor is installed at the end of the screw rod.

5. The cableway tensioning device according to claim 1, characterized in that: The distance between the centers of the guide wheels on the first guide slide is greater than the track width.

6. The cableway tensioning device according to claim 1, characterized in that: The distance between the guide wheel on the second guide slide and the detection box is greater than the track width.

7. The cableway tensioning device according to claim 1, characterized in that: The cross section of the boss is trapezoidal.

8. The cableway tensioning device according to claim 1, characterized in that: The limit switch is provided with a pressure wheel via a spring, the pressure wheel rolls along the track, and the pressure wheel can contact the boss.

9. The cableway tensioning device according to claim 1, characterized in that: A T-shaped bracket is fixedly installed at the center of the sliding frame, and a cableway driving wheel is installed below the T-shaped bracket.

10. The cableway tensioning device according to claim 1, characterized in that: The four corners below the frame are evenly distributed with supporting legs, and the frame is fixedly installed on the ground through the supporting legs.

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