Elevator speed limiter detection device

Abstract

The utility model relates to an elevator speed limiter detection device, and belongs to the technical field of elevator equipment detection. Comprising a friction driving wheel making contact with the outer circumferential wall of a rope wheel of an elevator speed limiter body, the friction driving wheel is connected with a driving motor, a support plate is fixed to the bottom of the driving motor, an inverted-U-shaped clamping plate clamped on a mounting frame plate of the elevator speed limiter body is fixed to the bottom of the support plate, and a rotating shaft is fixed to the lower left corner of the clamping plate; the rotating shaft is rotationally installed on the installation frame plate, an arc-shaped hole coaxial with the rotating shaft is formed in the installation frame plate, an adjusting screw rod is arranged in the arc-shaped hole, the two ends of the adjusting screw rod penetrate through the clamping plates respectively to be connected with locking nuts, and a speed sensor installed on the installation frame plate is arranged on one side of the rope wheel. The lower portion of the driving motor is connected with the support plate, then the clamping plate capable of being installed on the installation frame plate of the elevator speed limiter body is fixed to the support plate, the structure is simple, large installation space cannot be occupied, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to an elevator governor detection device and belongs to the technical field of elevator equipment detection. BACKGROUND

[0002] The governor, as a main safety component of the elevator, plays an important role in the safe operation of the elevator. When the elevator fails to descend at a high speed, the governor can automatically trigger and pull the safety clamp to act, stopping the elevator car on the guide rail, thereby ensuring the safety of passengers. In order to ensure that the governor can act normally, the governor needs to be checked.

[0003] The traditional detection device is manually held by a drive motor, so that the friction drive wheel is close to the outer wall of the rope wheel on the elevator governor, thereby driving the rope wheel to rotate through friction, and then the speed of the rope wheel is detected through a speed sensor, so as to detect. However, this method must be manually held by a drive motor, which will cause fatigue after a long time, is unsafe, and affects the measurement accuracy. Now there are some devices that can fix and adjust the position of the drive motor and the friction drive wheel outside the elevator governor, thereby maintaining the contact between the friction drive wheel and the rope wheel. However, this structure is relatively complex and occupies a large installation space. Some governors have limited space around them, which will affect the installation and use of the detection device. SUMMARY

[0004] The utility model provides an elevator governor detection device, which solves the problems in the above background technology.

[0005] The utility model relates to an elevator governor detection device, which comprises a friction drive wheel in contact with the outer circumferential wall of the rope wheel of the elevator governor body, a drive motor connected to the friction drive wheel, a support plate fixed to the bottom of the drive motor, a clamping plate in the shape of an inverted U clamped on the mounting plate of the elevator governor body fixed to the bottom of the support plate, a rotating shaft fixed to the lower left corner of the clamping plate, the rotating shaft being rotatably installed on the mounting plate, a circular arc-shaped hole coaxial with the rotating shaft being provided on the mounting plate, an adjusting screw being provided in the circular arc-shaped hole, lock nuts being connected to the two ends of the adjusting screw through the clamping plate, and a speed sensor mounted on the mounting plate being provided on one side of the rope wheel.

[0006] As a preferred embodiment, an L-shaped access opening is provided on the mounting plate, a semicircular groove cooperating with the rotating shaft is provided at the bottom right end of the access opening, and the top of the access opening extends to the top of the mounting plate, facilitating the quick installation of the clamping plate on the mounting plate.

[0007] As a kind of preferred, the upper left side of the clamping plate is provided with a tightening plate, the left side of the tightening plate is fixed with a connecting plate, the lower left end of the connecting plate is fixed with a inverted U-shaped locking plate clamped on the mounting rack plate, the locking plate is provided with locking bolt, after locking nut adjustment locking, it can use the tightening plate to press against the left side of the clamping plate, better prevent friction driving wheel and rope wheel separation.

[0008] As a kind of preferred, the mounting rack plate is provided with inverted U-shaped sliding adjustment plate that can slide left and right on its top, the sliding adjustment plate is provided with fastening bolt, the top of the sliding adjustment plate is fixed with a support plate, the support plate is provided with vertical strip-shaped hole, the speed sensor is installed in the strip-shaped hole, the speed sensor on the front and rear side of the support plate is provided with fastening nut, the position of the speed sensor can be conveniently adjusted left and right and up and down.

[0009] As a kind of preferred, the output shaft of the driving motor is fixed with a limit disc, the friction driving wheel is sleeved on the output shaft of the driving motor and supported on the limit disc at the inner end face, the outer side of the friction driving wheel is provided with fixed nut that is screwed on the output shaft of the driving motor, which facilitates the installation and replacement of the friction driving wheel.

[0010] As a kind of preferred, the limit disc is provided with positioning transmission convex column, the friction driving wheel is provided with positioning hole matched with the positioning transmission convex column, which better prevents the relative rotation of the friction driving wheel and the output shaft of the driving motor.

[0011] As a kind of preferred, the friction driving wheel is wear-resistant rubber wheel or polyurethane wear-resistant roller.

[0012] The utility model has the following beneficial effects:

[0013] By connecting the support plate under the driving motor, then fixing the clamping plate that can be installed on the mounting rack plate of the elevator speed limiter body on the support plate, the structure is simple, does not occupy large installation space, and is widely applicable, and the support plate can rotate around the rotating shaft, so that the friction driving wheel can better adhere to the rope wheel of the elevator speed limiter body, and the installation and adjustment are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the front view structural schematic diagram of the utility model;

[0015] Fig. 2 It is the side view structural schematic diagram of the friction driving wheel;

[0016] Fig. 3 It is the partial front view installation structural schematic diagram of the tightening plate and the locking plate;

[0017] In the diagram: 1. Elevator speed governor body; 101. Sheave; 102. Mounting bracket; 2. Drive motor; 3. Bracket plate; 4. Fastening nut; 5. Speed ​​sensor; 6. Clamping plate; 7. Locking nut; 8. Adjusting screw; 9. Entry opening; 10. Rotating shaft; 11. Arc-shaped hole; 12. Fastening bolt; 13. Sliding adjusting plate; 14. Support plate; 15. Strip hole; 16. Semicircular groove; 17. Top clamping plate; 18. Locking plate; 19. Locking bolt; 20. Connecting plate; 21. Limiting disc; 22. Positioning transmission protrusion; 23. Friction drive wheel. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example 1, such as Figs. 1 to 3 As shown, this utility model is an elevator speed governor detection device, including a friction drive wheel 23 that contacts the outer circumferential wall of the rope wheel 101 of the elevator speed governor body 1. The friction drive wheel 23 is connected to a drive motor 2. A bracket plate 3 is fixed to the bottom of the drive motor 2. An inverted U-shaped clamping plate 6 is fixed to the bottom of the bracket plate 3 and clamps it on the mounting bracket plate 102 of the elevator speed governor body 1. A rotating shaft 10 is fixed to the lower left corner of the clamping plate 6. The rotating shaft 10 is rotatably mounted on the mounting bracket plate 102. The mounting bracket plate 102 is provided with an arc-shaped hole 11 coaxial with the rotating shaft 10. An adjusting screw 8 is provided in the arc-shaped hole 11. The two ends of the adjusting screw 8 pass through the clamping plate 6 and are connected to locking nuts 7. A speed sensor 5 is provided on one side of the rope wheel 101 and mounted on the mounting bracket plate 102.

[0020] During installation, insert the clamping plate 6 from the top of the mounting plate 102, with the inner walls of the front and rear sides of the clamping plate 6 attached to the front and rear side walls of the mounting plate 102 respectively. Rotate the rotating shaft 10 onto the mounting plate 102. Insert the adjusting screw 8 through the mounting hole on the outer side of the clamping plate 6, then through the arc-shaped hole 11 and out from the other side of the clamping plate 6. Then tighten the locking nuts 7 on the adjusting screws 8 on both sides of the clamping plate 6. Finally, rotate the bracket plate 3 clockwise around the rotating shaft 10 so that the friction drive wheel 23 is pressed against the rope wheel 10. 1. On the outer circumferential wall, tighten the locking nuts 7 on the front and rear sides so that the clamping plate 6 is clamped on the mounting plate 102. The drive motor 2 starts to rotate and drives the rope wheel 101 to rotate through friction. At this time, the speed sensor 5 detects the rotation speed of the rope wheel 101. The rope wheel 101 gradually accelerates to the rated speed of the elevator speed limiter body 1. After moving at a constant speed for a period of time, the drive motor 2 will slowly accelerate until the speed reaches the action trigger speed of the elevator speed limiter body 1. Observe whether the elevator speed limiter body 1 is triggered at this time.

[0021] In the embodiment 2, the L-shaped access opening 9 is arranged on the mounting plate 102, the bottom right end of the access opening 9 is provided with the semicircular groove 16 matched with the rotating shaft 10, and the top of the access opening 9 extends to the top of the mounting plate 102. When the mounting clamp plate 6 is installed, the rotating shaft 10 is put into the top of the access opening 9, and then the rotating shaft 10 is slid right to be supported on the semicircular groove 16, and then the adjusting screw 8 is inserted. When the clamp plate 6 is removed, the locking nut 7 is unscrewed, the adjusting screw 8 is removed, and then the clamp plate 6 is moved left, and the rotating shaft 10 is removed from the access opening 9.

[0022] The left upper portion of the clamp plate 6 is provided with the clamping plate 17, the left side of the clamping plate 17 is fixed with the connecting plate 20, the clamping plate 17 can also be hinged with the connecting plate 20, the left lower portion of the connecting plate 20 is fixed with the inverted U-shaped locking plate 18 clamped on the mounting plate 102, and the locking plate 18 is provided with the locking bolt 19. When the clamp plate 6 is installed, the adjusting screw 8 is inserted into the circular arc-shaped hole 11, the locking nut 7 is tightened, the locking plate 18 is placed on the left side of the mounting plate 102, the locking plate 18 is moved right, the clamping plate 17 is clamped on the left side wall of the clamp plate 6, and then the locking bolt 19 is tightened.

[0023] The mounting plate 102 is provided with the inverted U-shaped sliding adjusting plate 13 which can slide left and right on the top of the mounting plate 102, the sliding adjusting plate 13 is provided with the fastening bolt 12, the top of the sliding adjusting plate 13 is fixed with the support plate 14, the support plate 14 is provided with the vertical strip-shaped hole 15, the speed sensor 5 is installed in the strip-shaped hole 15, and the speed sensor 5 is provided with the fastening nut 4 on the front and rear sides of the support plate 14. When the speed sensor 5 is installed, the fastening bolt 12 can be loosened, the sliding adjusting plate 13 is clamped on the top of the mounting plate 102, the sliding adjusting plate 13 is moved left and right, the left and right positions of the speed sensor 5 are adjusted, the fastening nut 4 is loosened, the up and down positions of the speed sensor 5 are adjusted, and then the fastening nut 4 and the fastening bolt 12 are tightened.

[0024] The output shaft of the driving motor 2 is fixed with the limiting disc 21, the friction driving wheel 23 is sleeved on the output shaft of the driving motor 2 and supported on the limiting disc 21, and the outer side of the friction driving wheel 23 is provided with the fixed nut screwed on the output shaft of the driving motor 2.

[0025] The limiting disc 21 is provided with the positioning transmission convex column 22, and the friction driving wheel 23 is provided with the positioning hole matched with the positioning transmission convex column 22. When the friction driving wheel 23 is used for a long time and needs to be replaced, the fixed nut can be unscrewed, the friction driving wheel 23 is removed and replaced, the new friction driving wheel 23 is sleeved on the output shaft of the driving motor 2, the positioning transmission convex column 22 is inserted into the positioning hole, and then the fixed nut is tightened.

[0026] The friction driving wheel 23 is a wear-resistant rubber wheel or a polyurethane wear-resistant roller. The driving motor 2 is a servo motor, and the driving motor 2 is connected with a PLC controller, and the PLC controller is connected with a display and a speed sensor 5.

[0027] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0028] In the description of the utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and do not require the utility model to be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

Claims

1. An elevator governor detection device comprising a friction drive wheel (23) in contact with the outer circumferential wall of a rope pulley (101) of an elevator governor body (1), the friction drive wheel (23) being connected with a drive motor (2), characterized in that: The bottom of the driving motor (2) is fixed with a support plate (3), the bottom of the support plate (3) is fixed with a clamping plate (6) in the shape of inverted U clamped on the mounting rack plate (102) of the elevator speed governor body (1), the lower left corner of the clamping plate (6) is fixed with a rotating shaft (10), the rotating shaft (10) is rotatably installed on the mounting rack plate (102), the mounting rack plate (102) is provided with a circular arc-shaped hole (11) coaxial with the rotating shaft (10), the circular arc-shaped hole (11) is provided with an adjusting screw (8), the two ends of the adjusting screw (8) are respectively connected with lock nuts (7) penetrating through the clamping plate (6), and the rope wheel (101) is provided with a speed sensor (5) mounted on the mounting rack plate (102) on one side.

2. The elevator governor detection apparatus according to claim 1, characterized by: The mounting rack plate (102) is provided with an L-shaped entering opening (9), the bottom right end of the entering opening (9) is provided with a semicircular groove (16) matched with the rotating shaft (10), and the top of the entering opening (9) extends to the top of the mounting rack plate (102).

3. The elevator governor detection apparatus according to claim 1, characterized by: The left upper portion of the clamping plate (6) is provided with a jacking plate (17), the left side of the jacking plate (17) is fixed with a connecting plate (20), the left lower portion of the connecting plate (20) is fixed with a locking plate (18) in the shape of inverted U clamped on the mounting rack plate (102), and the locking plate (18) is provided with a locking bolt (19).

4. The elevator governor detection apparatus according to claim 1, characterized by: The mounting rack plate (102) is provided with an inverted U-shaped sliding adjusting plate (13) which can slide left and right on the top of the mounting rack plate (102), the sliding adjusting plate (13) is provided with a fastening bolt (12), the top of the sliding adjusting plate (13) is fixed with a support plate (14), the support plate (14) is provided with a vertical strip-shaped hole (15), the speed sensor (5) is installed in the strip-shaped hole (15), and the speed sensor (5) on the front and rear sides of the support plate (14) is provided with a fastening nut (4).

5. The elevator governor detection apparatus of claim 1, wherein: The output shaft of the driving motor (2) is fixed with a limiting disc (21), the friction driving wheel (23) is sleeved on the output shaft of the driving motor (2) and the inner end surface is supported on the limiting disc (21), and the outer side of the friction driving wheel (23) is provided with a fixed nut threaded on the output shaft of the driving motor (2).

6. The elevator governor detection apparatus according to claim 5, characterized in that: The limiting disc (21) is provided with a positioning transmission convex column (22), and the friction driving wheel (23) is provided with a positioning hole matched with the positioning transmission convex column (22).

7. The elevator governor detection apparatus of claim 5, wherein: The friction driving wheel (23) is a wear-resistant rubber wheel or a polyurethane wear-resistant roller.

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