Abrasion detection device for elevator driving rope sheave

Abstract

The utility model relates to a wear detection device for a driving rope wheel of an elevator, which aims to solve the technical problems that the detection cost of the driving rope wheel is increased and the maintenance cost is increased due to the fact that the wear of the driving rope wheel is detected through a temperature sensor at present, and comprises a U-shaped frame arranged on the outer side of the rope wheel, a detection mechanism is mounted on the U-shaped frame and comprises a detection box, a rectangular hole is formed in the top of the detection box, two groups of detection rods are slidably connected in the rectangular hole, one end of the outer side of each group of detection rods is fixedly connected with a first conductive sheet, and fixing plates are mounted at the bottom ends of inner cavities of the detection box on the two sides of each group of detection rods; the rope wheel abrasion detection device has the advantages that abrasion of the rope wheel can be accurately detected without a sensor, the rope wheel detection cost is reduced, the rope wheel is not prone to damage in the using process, and therefore the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of drive sheave wear detection, specifically an elevator drive sheave wear detection device. Background Technology

[0002] Traction elevators use a drive motor to rotate a drive sheave, which in turn uses friction between itself and the ropes suspending the elevator car to move the car up and down in the shaft. Typically, the ropes contact the grooves of the drive sheave, transmitting force through friction. However, elevator drive sheaves experience severe wear during use, and if not repaired or replaced promptly, this can compromise elevator safety.

[0003] According to publicly available patent CN207293853U, an elevator drive sheave wear detection device includes a drive sheave with a wear detection device installed inside. The wear detection device includes a first anti-wear sleeve, a second anti-wear sleeve outer sleeve, a third anti-wear sleeve outer sleeve, and a fourth anti-wear sleeve outer sleeve. A second detection box is installed inside the first anti-wear sleeve, and a first detection box is installed inside the second, third, and fourth anti-wear sleeves. In the process of realizing this utility model, the inventors found that at least the following problems remain unsolved in the prior art: In use, the traditional method of detecting the wear of the drive sheave by means of a first detection probe, a second detection probe, and a temperature sensor not only increases the cost of drive sheave detection but also makes the sensors prone to damage during use, thereby increasing maintenance costs. Therefore, a new technical solution needs to be designed to address these issues. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide an elevator drive sheave wear detection device to solve the technical problem that the current method of detecting drive sheave wear by temperature sensor not only increases the cost of drive sheave detection, but also makes the sensor prone to damage during use, thereby increasing maintenance costs.

[0005] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: An elevator drive sheave wear detection device is designed, including a U-shaped frame installed on the outside of the sheave. A detection mechanism is installed on the U-shaped frame, and the detection mechanism includes a detection box. A rectangular hole is opened at the top of the detection box. Two sets of detection rods are slidably connected inside the rectangular hole, with two rods in each set. A first conductive plate is fixedly connected to one end of the outer side of each set of detection rods. A fixing plate is installed at the bottom of the inner cavity of the detection box on both sides of each set of detection rods. A second conductive plate is fixedly connected to one end of each of the four fixing plates near the first conductive plate. A detection wheel is rotatably connected to the top of each set of detection rods. An alarm is installed in the middle of the bottom of the inner cavity of the detection box. Limit grooves are opened on both sides of the inner cavity of the rectangular hole. Two sets of limit blocks are slidably connected in each of the two limit grooves, with two limit blocks in each set. The limit blocks are fixedly connected to the detection rods, and a spring is fixedly connected between the inner cavity of the limit groove and the limit block.

[0006] Preferably, the inner cavity of the detection box has adjustment grooves on both sides, and a bidirectional lead screw is rotatably connected between the inner cavities of the two adjustment grooves. Two adjustment blocks are slidably connected in the two adjustment grooves. The two adjustment blocks on the same side are respectively spirally sleeved on the outer sides of the bidirectional lead screw, and the adjustment blocks are fixedly connected to the fixing plate.

[0007] Preferably, the bottom of the inner cavity of the detection box on one side of the adjustment groove is engraved with scale lines, and the scale lines are parallel to the adjustment groove.

[0008] Preferably, a controller and a storage device are installed on both sides of the inner cavity of the alarm, and the alarm, controller and storage device are connected in series by wires.

[0009] Preferably, one end of the bidirectional lead screw rotates through the detection box and is positioned on the outside of the detection box, and a handwheel is fixedly connected to the bidirectional lead screw on the outside of the detection box.

[0010] Preferably, the spring is always in a stretched state, and the tension of the spring is greater than the frictional force between the limiting block and the limiting groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model combines a detection mechanism, a rope wheel, and a U-shaped frame. The detection wheel is attached to both sides of the inner cavity of the groove of the rope wheel. With the help of the spring tension, the detection wheel is always in contact with the inner cavity of the groove of the rope wheel. When the rope wheel wears, the detection wheel and the rope wheel are displaced. When the wear of the rope wheel is greater than or equal to the distance between the first and second conductive plates, the first and second conductive plates contact to form a closed circuit, and the alarm is activated to remind personnel that the rope wheel is worn and needs to be replaced. Thus, the wear of the rope wheel can be accurately detected without the use of sensors, which not only reduces the cost of rope wheel detection, but also makes it less prone to damage during use, thereby reducing maintenance costs.

[0013] 2. This utility model combines a bidirectional lead screw, an adjusting groove, and an adjusting block. By turning the bidirectional lead screw, the position of the second conductive plate can be adjusted, thereby adjusting the distance between the first and second conductive plates, and thus adjusting the range of rope wheel wear detection, further improving the applicability of rope wheel wear detection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a partial structural diagram of the connection between the detection wheel and the rope wheel of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the detection box of this utility model;

[0017] Figure 4 This is a top view of the detection box of this utility model;

[0018] In the diagram: 1. Rope pulley; 2. U-shaped frame; 3. Detection box; 31. Detection rod; 32. Detection wheel; 33. Alarm; 34. First conductive plate; 35. Fixing plate; 36. Second conductive plate; 37. Limiting groove; 38. Rectangular hole; 39. Limiting block; 310. Spring; 4. Adjusting groove; 41. Two-way lead screw; 42. Adjusting block; 43. Handwheel; 5. Scale line; 6. Controller; 7. Storage device. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Example 1: A device for detecting wear of elevator drive sheaves, see [link / reference] Figures 1 to 4The system includes a U-shaped frame 2 installed on the outside of the rope wheel 1, and a detection mechanism installed on the U-shaped frame 2. The detection mechanism includes a detection box 3, with a rectangular hole 38 on the top of the detection box 3. Two sets of detection rods 31 are slidably connected in the rectangular hole 38, with two rods in each set. A first conductive plate 34 is fixedly connected to one end of the outer side of each set of detection rods 31. Fixing plates 35 are installed at the bottom of the inner cavity of the detection box 3 on both sides of each set of detection rods 31. A second conductive plate 36 is fixedly connected to one end of each of the four fixing plates 35 near the first conductive plate 34. A detection wheel 32 is rotatably connected to the top of each detection set. An alarm 33 is installed in the middle of the bottom of the inner cavity of the detection box 3. The first conductive plate 34 is connected to one electrode of the alarm 33 through a wire, and the second conductive plate 36 is connected to the other electrode of the alarm 33 through a wire via an external power source. Limiting grooves 37 are opened on both sides of the inner cavity of the rectangular hole 38. Two sets of limiting blocks 39 are slidably connected in the two limiting grooves 37. There are two position blocks 39, and the position blocks 39 are fixedly connected to the detection rod 31. A spring 310 is fixedly connected between the inner cavity of the limiting groove 37 and the limiting block 39. The spring 310 is always in a stretched state, and the tension of the spring 310 is greater than the friction between the limiting block 39 and the limiting groove 37. The detection wheel 32 is attached to both sides of the inner cavity of the groove of the rope wheel 1. With the tension of the spring 310, the detection wheel 32 is always attached to the inner cavity of the groove of the rope wheel 1. When the rope wheel 1 is worn, the detection wheel 32 and the rope wheel 1 are displaced. When the wear degree of the rope wheel 1 is greater than or equal to the set distance between the first conductive plate 34 and the second conductive plate 36, the first conductive plate 34 and the second conductive plate 36 contact to form a closed circuit. After that, the alarm 33 works to remind the personnel that the rope wheel 1 is worn and needs to be replaced. Thus, the wear of the rope wheel 1 can be accurately detected without the use of a sensor. This not only reduces the cost of detecting the rope wheel 1, but also makes it less prone to damage during use, thereby reducing maintenance costs.

[0021] For details, see Figure 3 and Figure 4 The inner cavity of the detection box 3 has adjustment grooves 4 on both sides of the bottom. A bidirectional lead screw 41 is rotatably connected between the two sides of the inner cavity of the two adjustment grooves 4. Two adjustment blocks 42 are slidably connected in the two adjustment grooves 4. The two adjustment blocks 42 on the same side are respectively spirally sleeved on the outer sides of the bidirectional lead screw 41. The adjustment blocks 42 are fixedly connected to the fixing plate 35. Before the wear detection of the rope wheel 1, the position of the second conductive plate 36 can be adjusted by turning the bidirectional lead screw 41, thereby adjusting the distance between the first conductive plate 34 and the second conductive plate 36, thereby adjusting the range of the wear detection of the rope wheel 1, and further improving the applicability of the wear detection of the rope wheel 1.

[0022] Further, see Figure 4The bottom of the inner cavity of the detection box 3 on one side of the adjustment groove 4 is engraved with scale line 5, and the scale line 5 is parallel to the adjustment groove 4. By setting the scale line 5, the distance between the first conductive sheet 34 and the second conductive sheet 36 can be precisely adjusted, thereby further improving the accuracy of the wear detection of the rope wheel 1.

[0023] It is worth noting that, see Figure 3 The alarm 33 has a controller 6 and a storage device 7 installed on both sides of its inner cavity. The alarm 33, controller 6 and storage device 7 are connected in series by wires. The controller 6 can record the working time of the alarm 33 and store it in the storage device 7, so that maintenance personnel can check when the rope wheel 1 needs to be replaced due to wear.

[0024] It is worth noting that, see Figure 3 One end of the bidirectional lead screw 41 rotates through the detection box 3 and is placed on the outside of the detection box 3. A handwheel 43 is fixedly connected to the bidirectional lead screw 41 on the outside of the detection box 3. The handwheel 43 makes it easy for personnel to hold and further facilitates personnel to manually turn the bidirectional lead screw 41 to adjust the distance between the first conductive sheet 34 and the second conductive sheet 36.

[0025] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0026] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A device for detecting wear of elevator drive sheaves, comprising a U-shaped frame (2) mounted on the outside of the sheave (1), wherein a detection mechanism is mounted on the U-shaped frame (2), characterized in that, The detection mechanism includes a detection box (3), the top of which has a rectangular hole (38), and two sets of detection rods (31) are slidably connected in the rectangular hole (38). Each set of detection rods (31) has two rods. One outer end of each set of detection rods (31) is fixedly connected to a first conductive sheet (34). Fixing plates (35) are installed at the bottom of the inner cavity of the detection box (3) on both sides of each set of detection rods (31). A second conductive sheet (36) is fixedly connected to one end of each of the four fixing plates (35) near the first conductive sheet (34). A detection wheel (32) is rotatably connected to the top of each set of detection rods. An alarm (33) is installed in the middle of the bottom of the inner cavity of the detection box (3). The inner cavity of the rectangular hole (38) has a limiting groove (37) on both sides. Two sets of limiting blocks (39) are slidably connected in the two limiting grooves (37). There are two limiting blocks (39) in each set. The limiting blocks (39) are fixedly connected to the detection rod (31). A spring (310) is fixedly connected between the inner cavity of the limiting groove (37) and the limiting block (39).

2. The elevator drive sheave wear detection device as described in claim 1, characterized in that, The detection box (3) has adjustment grooves (4) on both sides of the bottom of the inner cavity. A two-way screw rod (41) is rotatably connected between the two sides of the inner cavity of the two adjustment grooves (4). Two adjustment blocks (42) are slidably connected in the two adjustment grooves (4). The two adjustment blocks (42) on the same side are respectively spirally sleeved on the outer sides of the two-way screw rod (41), and the adjustment blocks (42) are fixedly connected to the fixing plate (35).

3. The elevator drive sheave wear detection device as described in claim 2, characterized in that, The bottom of the inner cavity of the detection box (3) on one side of the adjustment groove (4) is engraved with scale lines (5), and the scale lines (5) are parallel to the adjustment groove (4).

4. The elevator drive sheave wear detection device as described in claim 1, characterized in that, The alarm (33) has a controller (6) and a storage device (7) installed on both sides of its inner cavity. The alarm (33), controller (6) and storage device (7) are connected in series by wires.

5. The elevator drive sheave wear detection device as described in claim 2, characterized in that, One end of the bidirectional lead screw (41) rotates through the detection box (3) and is placed on the outside of the detection box (3). A handwheel (43) is fixedly connected to the bidirectional lead screw (41) on the outside of the detection box (3).

6. The elevator drive sheave wear detection device as described in claim 1, characterized in that, The spring (310) is always in a stretched state, and the tension of the spring (310) is greater than the friction between the limiting block (39) and the limiting groove (37).

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