Elevator steel wire rope tension detection device

Abstract

The utility model relates to the technical field of steel wire rope detection, and discloses an elevator steel wire rope tension detection device which comprises a shell, bases are fixedly connected to the front end and the rear end of the bottom of one side of the shell, pressing plates are arranged at the top ends of the two bases, cavities are formed in the two pressing plates, and balls are rotationally connected in the two cavities. Grooves are formed in the outer sides of the two balls correspondingly, a plurality of evenly-distributed protruding blocks are fixedly connected into the two grooves correspondingly, mounting grooves are formed in the front ends and the rear ends of the inner side walls of the two cavities correspondingly, springs are fixedly connected to one sides of the inner side walls of the two mounting grooves correspondingly, and fixing blocks are fixedly connected to the other ends of the two springs correspondingly. According to the tension detection device, the steel wire rope can drive the ball to rotate in the cavity when sliding, and when the ball rotates, the convex block can enable the fixed block to retract, so that the ball can rotate, and further the steel wire rope can smoothly slide between the base and the pressing plate so as not to influence the accuracy of tension detection.

Description

Technical Field

[0001] The utility model relates to the technical field of wire rope detection, in particular to a device for detecting the tension of elevator wire ropes. Background Art

[0002] Elevator wire ropes are crucial components in the elevator system, mainly used to carry the elevator car and counterweight to ensure the safe operation of the elevator. After the installation of the elevator car is completed, it is necessary to detect the tension of the wire ropes, and a device for detecting the tension of the wire ropes needs to be used in cooperation. The device for detecting the tension of the wire ropes is a device used to monitor and measure the tension borne by the wire ropes during operation, which is crucial for ensuring the safe operation of the wire ropes.

[0003] After retrieval, the Chinese patent publication number: CN213294359U discloses a device for detecting the tension of elevator wire ropes, including a mounting frame. An installation groove is provided inside the mounting frame. The left inner side wall of the installation groove is fixedly connected with a first electric push rod, and the output end of the first electric push rod is fixedly connected with a movable frame. Clamping mechanisms are fixed at both ends of the movable frame. A detection mechanism is fixedly connected to the right end outside the mounting frame. Inside the clamping mechanism, a first wedge block, a second wedge block, an L-shaped clamping plate, and a fixing plate are installed. The clamping mechanism includes a mounting plate, a detector, a second electric push rod, a hook plate, and an extrusion plate. When the first electric push rod is started to push the movable frame to move, the first wedge-shaped block and the second wedge-shaped block are moved by the movement of the movable frame, and at the same time, two L-shaped clamping plates are driven to fix the wire rope. The position of the wire rope is fixed by driving the two L-shaped clamping plates. When the detection mechanism jacks up the wire rope to detect the tension of the wire rope (when the detector jacks up the wire rope), since the positions of the two ends of the wire rope clamped are fixed and unchanged, the jacking movement of the detector will cause additional deformation of the wire rope, resulting in inaccurate measured values. At this time, the measured value is not the tension of the elevator car on the wire rope. Summary of the Utility Model

[0004] In order to make up for the above deficiencies, the utility model provides a device for detecting the tension of elevator wire ropes, aiming to improve the problem that when the detector jacks up the wire rope, the wire rope cannot move due to the clamping and fixing of the clamping mechanism, resulting in deformation, and at this time, the measured value is not the tension of the elevator car on the wire rope, thus making the detection inaccurate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: A device for detecting the tension of elevator wire ropes, including:

[0006] A housing, both front and rear ends at the bottom of one side of the housing are fixedly connected with bases;

[0007] Two pressing plates, respectively located at the top of the bases, and cavities are provided inside the pressing plates;

[0008] Two ball bearings are respectively rotatably connected inside the cavity;

[0009] Two grooves are respectively formed on the outer sides of the ball bearings;

[0010] A plurality of bumps are respectively fixedly connected inside the grooves. Installation grooves are formed at the front and rear ends of the inner side walls of the two cavities. One side of the inner side walls of the two installation grooves is fixedly connected with a spring. The other ends of the two springs are fixedly connected with a fixing block. The other ends of the two fixing blocks are respectively slidably connected inside the grooves. The fixing block fixes the ball bearing in the extended state.

[0011] As a further description of the above technical solution:

[0012] It further includes a plurality of limiting grooves which are respectively formed on both sides of the inner side walls of the installation grooves. A limiting block is slidably connected inside each of the plurality of limiting grooves. The plurality of limiting blocks are respectively fixedly connected to both sides of the fixing block. The limiting blocks are used to limit the fixing block.

[0013] As a further description of the above technical solution:

[0014] Both the front and rear ends of the top of one side of the outer shell are fixedly connected with fixing plates. The bottom ends of the two fixing plates are respectively fixedly connected with electric push rods. The lower driving ends of the two electric push rods are respectively fixedly connected to the top end of the pressing plate. The electric push rods are used to push the pressing plate to move.

[0015] As a further description of the above technical solution:

[0016] One side of the outer shell is threadedly connected with a screw rod. One end of the screw rod is rotatably connected with a top rod. The other end of the top rod penetrates through the inner side wall of the outer shell and is fixedly connected with a pressure sensor.

[0017] As a further description of the above technical solution:

[0018] It further includes two side plates which are both fixedly connected to the inner bottom wall of the outer shell. A chute is formed on the adjacent side of the two side plates. A slider is slidably connected inside each of the two chutes. The adjacent sides of the two sliders are respectively fixedly connected to the front and rear sides of the top rod. The sliders are used to limit the top rod.

[0019] As a further description of the above technical solution:

[0020] The rear side of the top of the outer shell is fixedly connected with a display screen.

[0021] The utility model has the following beneficial effects:

[0022] In the present utility model, when checking the tension of the steel wire rope, the steel wire rope needs to slide slightly between the pressing plate and the base. At this time, the steel wire rope will drive the ball to rotate inside the cavity. Since both the fixing block and the convex block are set to be semi-circular, when the ball rotates, the convex block will cause the fixing block to retract, enabling the ball to rotate, and further enabling the steel wire rope to slide smoothly between the base and the pressing plate, so as not to affect the accuracy of the tension detection. Description of the Drawings

[0023] Figure 1 is a perspective view of a device for detecting the tension of an elevator steel wire rope proposed by the present utility model;

[0024] Figure 2 is a perspective cross-sectional view of the pressing plate of a device for detecting the tension of an elevator steel wire rope proposed by the present utility model;

[0025] Figure 3 is Figure 2 an enlarged view of part A in

[0026] Figure 4 is a perspective cross-sectional view of the outer shell of a device for detecting the tension of an elevator steel wire rope proposed by the present utility model.

[0027] Legend Explanation:

[0028] 1. Outer shell; 2. Fixing plate; 3. Pressing plate; 4. Base; 5. Screw; 6. Electric push rod; 7. Installation groove; 8. Cavity; 9. Groove; 10. Convex block; 11. Ball; 12. Limiting groove; 13. Limiting block; 14. Fixing block; 15. Spring; 16. Sliding groove; 17. Slider; 18. Thrust rod; 19. Pressure sensor; 20. Side plate; 21. Display screen. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] Refer to Figures 1-4, an embodiment provided by the present utility model: a detection device for the tension of an elevator steel wire rope, including a housing 1. At the front and rear ends of the bottom on one side of the housing 1, there are both fixedly connected with bases 4. On the top of the two bases 4, there are both provided with pressing plates 3. The pressing plates 3 are only placed on the top of the bases 4 and there is no connection relationship between them. Inside the two pressing plates 3, there are both provided with cavities 8. Inside the two cavities 8, there are both rotatably connected with balls 11. On the outer sides of the two balls 11, there are both provided with grooves 9. Inside the two grooves 9, there are both fixedly connected with a plurality of evenly distributed bumps 10. At the front and rear ends of the inner side walls of the two cavities 8, there are both provided with installation slots 7. On one side of the inner side walls of the two installation slots 7, there are both fixedly connected with springs 15. The other ends of the two springs 15 are both fixedly connected with fixing blocks 14. The other ends of the two fixing blocks 14 are both slidably connected inside the grooves 9.

[0031] When the base 4 and the pressing plate 3 fix the steel wire rope and conduct a tension inspection on the steel wire rope, the steel wire rope will slide between the pressing plate 3 and the base 4. At this time, the steel wire rope will drive the ball 11 to rotate inside the cavity 8. Since both the fixing block 14 and the bump 10 are set to be semi-circular, when the ball 11 rotates, the bump 10 will squeeze the fixing block 14 to make the fixing block 14 retract, so that the ball 11 can rotate. By using the rotation of the ball 11, the steel wire rope can smoothly slide between the base 4 and the pressing plate 3 to avoid affecting the accuracy of the tension detection.

[0032] On both sides of the inner side walls of the two installation slots 7, there are both provided with limiting slots 12. Inside the plurality of limiting slots 12, there are both slidably connected with limiting blocks 13. On the adjacent sides of the plurality of limiting blocks 13, they are respectively fixedly connected to both sides of the fixing block 14. When the fixing block 14 slides inside the installation slot 7, the limiting block 13 can be used to limit the fixing block 14.

[0033] At the front and rear ends of the top on one side of the housing 1, there are both fixedly connected with fixing plates 2. At the bottom ends of the two fixing plates 2, there are both fixedly connected with electric push rods 6. The lower driving ends of the two electric push rods 6 are respectively fixedly connected to the top of the pressing plate 3. By using the electric push rods 6, the pressing plate 3 can be pushed downward to fix the steel wire rope on the top of the base 4.

[0034] On the middle part of one side of the housing 1, there is a screw rod 5 threadedly connected. One end of the screw rod 5 is rotatably connected with a top rod 18. The other end of the top rod 18 penetrates through the inner side wall of the housing 1 and is fixedly connected with a pressure sensor 19. By rotating the screw rod 5 by hand, the screw rod 5 is made to push the top rod 18 to slide inside the housing 1, and then the pressure sensor 19 is pushed to move.

[0035] In the middle of the inner bottom wall of the housing 1, two side plates 20 are fixedly connected. On one adjacent side of the two side plates 20, sliding grooves 16 are provided. Inside the two sliding grooves 16, sliding blocks 17 are slidably connected. On the front and rear sides of the ejector rod 18, the adjacent sides of the two sliding blocks 17 are fixedly connected respectively. When the ejector rod 18 moves, it will drive the sliding block 17 to slide inside the sliding groove 16. By using the sliding block 17 sliding inside the sliding groove 16, the ejector rod 18 can be limited to prevent the screw rod 5 from driving the ejector rod 18 to rotate together when rotating.

[0036] At the rear side of the top end of the housing 1, a display screen 21 is fixedly connected. The data of the pressure sensor 19 can be displayed by using the display screen 21. The pressure sensor 19 and the display screen 21 are components of the wire rope tension detection device. For reference, the wire rope tension detector of model YGG-02 can be used. The pressure sensor 19 and the display screen 21 are prior arts and will not be elaborated here.

[0037] Working principle: Place the wire rope to be detected between the base 4 and the pressing plate 3 at both ends of the housing 1, and make the wire rope on one side of the pressure sensor 19. Then start the electric push rod 6 to push the pressing plate 3 downward to fix the wire rope on the base 4 by the pressing plate 3. When the pressing plate 3 and the base 4 fix the wire rope, the wire rope will enter the groove 9 of the ball 11 below the pressing plate 3. At this time, the spring 15 will push the fixing block 14 into the groove 9 to clamp the ball 11, so as to prevent the ball 11 from rolling due to the weight of the housing 1 and causing the housing 1 to fall; after the wire rope is fixed, the screw rod 5 can be rotated by hand to make the screw rod 5 push the ejector rod 18 to slide inside the housing 1. At the same time, the sliding ejector rod 18 is used to push the pressure sensor 19 to move and lift the wire rope to one side, so that the pressure sensor 19 can detect the tension of the wire rope, and transmit the detected data to the display screen 21 and display it for the staff to observe. When the tension of the wire rope is detected, the steel wire rope will have a slight sliding. When the steel wire rope slides, it will drive the ball 11 to rotate. And because both the fixing block 14 and the convex block 10 are set to be semi-circular, when the ball 11 rotates, the convex block 10 will squeeze the fixing block 14 to make the fixing block 14 retract, so that the ball 11 can rotate. By using the rotation of the ball 11, the wire rope can slide smoothly between the base 4 and the pressing plate 3 without affecting the accuracy of the tension detection.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for detecting the tension of an elevator wire rope, characterized in that: include A housing (1), wherein the front and rear ends of the bottom of one side of the housing (1) are fixedly connected to a base (4); Two pressing plates (3) are respectively located at the top of the base (4), and a cavity (8) is formed inside the pressing plates (3); Two balls (11) are rotatably connected inside the cavity (8); Two grooves (9) are respectively formed on the outer sides of the ball (11); A plurality of protrusions (10) are respectively fixedly connected inside the groove (9); the inner side walls of the two cavities (8) are provided with mounting grooves (7) at both front and rear ends; one side of the inner side walls of the two mounting grooves (7) is fixedly connected with a spring (15); the other ends of the two springs (15) are fixedly connected with a fixing block (14); the other ends of the two fixing blocks (14) are slidably connected inside the groove (9); and the fixing block (14) fixes the ball (11) in an extended state.

2. The elevator wire rope tension detection device according to claim 1, characterized in that: It also includes a plurality of limit grooves (12), which are respectively arranged on both sides of the inner wall of the installation groove (7); the plurality of limit grooves (12) are slidably connected to limit blocks (13); the plurality of limit blocks (13) are respectively fixedly connected to both sides of the fixed block (14); and the limit blocks (13) are used to limit the fixed block (14).

3. The device for detecting the tension of an elevator wire rope according to claim 1, characterized in that: The front and rear ends of the top of one side of the housing (1) are fixedly connected to a fixing plate (2), the bottom ends of the two fixing plates (2) are fixedly connected to an electric push rod (6), the lower driving ends of the two electric push rods (6) are respectively fixedly connected to the top of the pressing plate (3), and the electric push rod (6) is used to push the pressing plate (3) to move.

4. The device for detecting the tension of an elevator wire rope according to claim 1, characterized in that: A screw rod (5) is threadedly connected to the middle of one side of the shell (1); one end of the screw rod (5) is rotatably connected to a push rod (18); the other end of the push rod (18) penetrates the inner wall of the shell (1) and is fixedly connected to a pressure sensor (19).

5. The device for detecting the tension of an elevator wire rope according to claim 4, characterized in that: It also includes two side plates (20), both of which are fixedly connected to the inner bottom wall of the shell (1), and the adjacent sides of the two side plates (20) are each provided with a slide groove (16), and the insides of the two slide grooves (16) are each slidably connected with a slider (17), and the adjacent sides of the two sliders (17) are respectively fixedly connected to the front and rear sides of the push rod (18), and the slider (17) is used to limit the push rod (18).

6. The device for detecting the tension of an elevator wire rope according to claim 1, characterized in that: A display screen (21) is fixedly connected to the rear side of the top end of the housing (1).

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