Stroke limiting device capable of finely adjusting positions of two ends of steel wire rope

Abstract

The utility model discloses a stroke limiting device capable of finely adjusting two end positions of a steel wire rope, which relates to the technical field of steel wire rope limiting and comprises a limiting switch and trigger blocks fixed on the steel wire rope and positioned on two sides of the limiting switch, the limit switch comprises a fixing frame, an elastic sheet fixed on the fixing frame and microswitches which are installed on the fixing frame and symmetrically arranged on the two sides of the elastic sheet, and the elastic sheet bends towards the two sides under the action of external force and can trigger the microswitches on the corresponding sides; when the steel wire rope moves, the trigger block is in contact with the elastic piece and drives the elastic piece to bend in the moving direction. The two trigger blocks are fixedly installed on the steel wire rope, the elastic piece is arranged between the two trigger blocks, and the trigger blocks move up and down to drive the elastic piece to bend up and down, so that the microswitch above or below the elastic piece is triggered, and accurate control over the stroke between the two trigger blocks is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire rope limiting, in particular to a travel limiting device capable of finely adjusting the positions of two ends of a wire rope. Background Art

[0002] When winding the wire rope on the drum of the current winding machine, an extreme limit device is provided to prevent the accident of over-winding and top collision, or to prevent the accident of wire rope falling off due to over-falling. In the actual use of the winding machine, it is often necessary to reciprocate the wire rope with a fixed stroke to achieve traction work, such as in the guide plate adjustment system of the breeding house, such as the guide plate adjustment system disclosed in Chinese patent CN 107646709A, which requires the wire rope to reciprocate to achieve the traction of the guide plate, so as to achieve the opening and closing of the vent.

[0003] When the fixed-stroke wire rope moves back and forth, it does not reach the limit position of the wire rope, so the limit limit device cannot accurately measure the positions of the two ends of the fixed-stroke wire rope, resulting in inaccurate positions of the two ends of the fixed-stroke wire rope, which leads to imprecise corresponding applications, such as inaccurate opening and closing of the vents. Utility Model Content

[0004] The purpose of the utility model is to provide a travel limit device which can finely adjust the positions of both ends of a steel wire rope. Two trigger blocks are fixedly installed on the steel wire rope, an elastic sheet is arranged between the two trigger blocks, and the trigger blocks drive the elastic sheet to bend accordingly, thereby triggering a micro switch at the corresponding position of the elastic sheet, so as to realize precise control of the travel between the two trigger blocks.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a travel limit device which can finely adjust the positions of both ends of a steel wire rope, comprising a limit switch and trigger blocks fixed on the steel wire rope and located on both sides of the limit switch; the limit switch comprises a fixing frame, an elastic sheet fixed on the fixing frame and micro switches installed on the fixing frame and symmetrically arranged on both sides of the elastic sheet, the elastic sheet bends to both sides under the action of external force and can trigger the micro switches on the corresponding sides; when the steel wire rope moves, the trigger block contacts the elastic sheet and drives the elastic sheet to bend in its moving direction.

[0006] After adopting the above structure, two trigger blocks are fixedly installed on the wire rope, and an elastic sheet is arranged between the two trigger blocks. The elastic sheet is bent by the movement of the trigger blocks, thereby triggering the micro switch on the corresponding side, thereby realizing precise control of the stroke between the two trigger blocks.

[0007] In order to ensure the relative position relationship between the trigger block and the elastic sheet, a through hole for the steel wire rope to pass through is provided on the elastic sheet, and the trigger block cannot pass through the through hole.

[0008] In order to prevent the shaking of the wire rope from causing damage to the elastic sheet, the through hole is a long strip hole.

[0009] In order to protect the elastic sheet and the micro switch, a protective cover is provided on the outer cover of the elastic sheet and the micro switch. Avoidance holes are provided on the protective cover corresponding to the through holes, and the trigger block passes through the avoidance holes and enters the protective cover.

[0010] In order to facilitate the fixing of the elastic sheet, one end of the elastic sheet is fixed on the fixing frame, and the other end is suspended; the micro switches are fixed on both sides of the suspended end of the elastic sheet.

[0011] In order to improve the sensitivity of the elastic sheet and reduce the fixed area of ​​the fixed end of the elastic sheet, the long hole divides the fixed end of the elastic sheet into two legs, and a bending plate perpendicular to the elastic sheet is arranged on the two legs, and the bending plate is fixed on the fixing frame.

[0012] In order to ensure the resetting ability of the elastic sheet and to ensure that the elastic sheet is in the middle position when resetting and does not deviate to the upper end or the lower end, the extension directions of the two bent plates are opposite.

[0013] In order to facilitate the adjustment of the moving stroke of the wire rope, the trigger block is installed on the wire rope with an adjustable position.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model discloses a travel limit device capable of finely adjusting the positions of both ends of a steel wire rope, which solves the technical problem in the prior art that when the steel wire rope performs reciprocating movement of a fixed stroke, both ends of the fixed stroke cannot be determined, resulting in an unstable length of the reciprocating motion stroke of the steel wire rope. The utility model fixes two trigger blocks on the steel wire rope, and an elastic sheet is arranged between the two trigger blocks. The trigger blocks drive the elastic sheet to perform corresponding bending, thereby triggering a micro switch at the corresponding position of the elastic sheet, thereby realizing precise control of the stroke between the two trigger blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the internal structure;

[0018] Figure 3 yes Figure 1 Schematic diagram of working principle;

[0019] Figure 4 yes Figure 2 Schematic diagram of the structure of the elastic sheet.

[0020] In the figure, 1. fixing frame, 11. fixing hole, 12. elastic sheet, 121. through hole, 122. bending plate, 13. micro switch, 14. protective cover, 141. avoidance hole, 2. wire rope, 3. trigger block. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] The orientations mentioned in this specification are based on the orientations of the travel limit device of the utility model capable of finely adjusting the positions of both ends of a steel wire rope during normal operation, and do not limit the orientations during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown together, a travel limit device capable of finely adjusting the positions of both ends of a steel wire rope comprises a limit switch and trigger blocks 3 fixed on a steel wire rope 2 and located on both sides of the limit switch.

[0024] The limit switch includes a fixing frame 1, an elastic sheet 12 fixed on the fixing frame 1, and a micro switch 13 installed on the fixing frame 1 and symmetrically arranged on both sides of the elastic sheet 12. A fixing hole 11 is provided on the fixing frame 1, and the fixing hole 11 is used to fix the fixing frame 1 on a wall or a rack. The fixing hole 11 is a waist-shaped hole, and the installation position of the fixing frame 1 can be fine-tuned. The elastic sheet 12 bends to both sides under the action of external force, and can trigger the micro switch 13 on the corresponding side. When the trigger block 3 moves with the wire rope 2, when it reaches the position of the elastic sheet 12, the trigger block 3 contacts the elastic sheet 12 and drives the elastic sheet 12 to bend in its moving direction.

[0025] The elastic sheet 12 can be a reset slider that moves up and down. In order to simplify the structure of the device in this embodiment, the elastic sheet 12 is a metal plate. One end of the elastic sheet 12 is fixed to the fixing frame 1, and the other end is suspended. The micro switch 13 is fixed on both sides of the suspended end of the elastic sheet 12.

[0026] The elastic sheet 12 is provided with a through hole 121 for the steel wire rope 2 to pass through, and the trigger block 3 cannot pass through the through hole 121. The trigger block 3 is installed on the steel wire rope 2 with an adjustable position, so as to facilitate the adjustment of the distance between the two trigger blocks 3, thereby adjusting the length of the fixed stroke of the steel wire rope.

[0027] In order to effectively protect the elastic sheet 12 and the micro switch 13, a protective cover 14 is provided on the outer side of the elastic sheet 12 and the micro switch 13. The protective cover 14 is provided with avoidance holes 141 corresponding to the through holes 121. The avoidance holes 141 allow the trigger block 3 to pass through and enter the protective cover 14.

[0028] When the winding machine drives the steel wire rope 2 to move downward, the trigger block 3 above the elastic sheet 12 reaches the position of the elastic sheet 12, and the trigger block 3 cannot pass through the through hole 121. Therefore, under the tension of the steel wire rope 2, the elastic sheet 12 is driven to bend downward, triggering the micro switch 13 below the elastic sheet 12, so that the winding machine stops working; when running in the reverse direction, the trigger block 3 below the elastic sheet 12 drives the elastic sheet 12 to bend upward, triggering the upward micro switch 13 of the elastic sheet 12, so that the winding machine stops working.

[0029] The steel wire rope 2 will produce a certain amount of shaking during operation. Therefore, in order to avoid the steel wire rope 2 from exerting lateral pressure on the through hole 121 of the elastic sheet 12, causing deformation of the elastic sheet 12, the through hole 121 is preferably a long hole, and the steel wire rope 2 can shake in the through hole 121.

[0030] like Figure 4 As shown, in order to improve the sensitivity of the elastic sheet 12 and reduce the contact area between the elastic sheet 12 at the fixed end and the fixing frame 1, the long hole divides the fixed end of the elastic sheet 12 into two legs, and a bending plate 122 perpendicular to the elastic sheet 12 is provided on the two legs, and the bending plate 122 is fixed on the fixing frame 1.

[0031] In order to ensure that the elastic sheet 12 is in the middle position when it is reset and does not deviate to the upper or lower end, the elastic sheet 12 is further improved. The extension directions of the two bending plates 122 are opposite, that is, one bending plate 122 is toward the top of the elastic sheet 12, and the other bending plate 122 is toward the bottom of the elastic sheet 12.

[0032] The utility model discloses a travel limit device capable of finely adjusting the positions of the two ends of a steel wire rope, which solves the technical problem in the prior art that when the steel wire rope performs reciprocating movement of a fixed stroke, the two ends of the fixed stroke cannot be determined, resulting in an unstable length of the reciprocating motion stroke of the steel wire rope. The utility model fixes two trigger blocks on the steel wire rope, and an elastic sheet is arranged between the two trigger blocks. The trigger blocks drive the elastic sheet to bend up and down, thereby triggering a micro switch above or below the elastic sheet, thereby realizing precise control of the stroke between the two trigger blocks.

[0033] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A travel limit device capable of finely adjusting the positions of both ends of a wire rope, characterized in that: It includes a limit switch and trigger blocks fixed on the wire rope and located on both sides of the limit switch; The limit switch comprises a fixing frame, an elastic sheet fixed on the fixing frame, and micro switches mounted on the fixing frame and symmetrically arranged on both sides of the elastic sheet, wherein the elastic sheet bends to both sides under the action of an external force and can trigger the micro switches on the corresponding sides; When the steel wire rope moves, the trigger block contacts the elastic sheet and drives the elastic sheet to bend in its moving direction.

2. A travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 1, characterized in that: The elastic sheet is provided with a through hole for the steel wire rope to pass through, and the trigger block cannot pass through the through hole.

3. A travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 2, characterized in that: The through hole is an elongated hole.

4. A travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 2, characterized in that: The elastic sheet and the outer cover of the micro switch are provided with a protective cover, and the protective cover is provided with an avoidance hole corresponding to the through hole, and the trigger block passes through the avoidance hole and enters into the protective cover.

5. A travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 3, characterized in that: One end of the elastic sheet is fixed on the fixing frame, and the other end is in a suspended state; the micro switch is fixed on both sides of the suspended end of the elastic sheet.

6. A travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 5, characterized in that: The long hole divides the fixed end of the elastic sheet into two legs, and the two legs are provided with a bending plate perpendicular to the elastic sheet, and the bending plate is fixed on the fixing frame.

7. A travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 6, characterized in that: The two bent plates extend in opposite directions.

8. The travel limit device capable of finely adjusting the positions of both ends of a steel wire rope according to claim 1, characterized in that: The trigger block is installed on the steel wire rope in an adjustable position.

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