Elevator rope loosening protection device

Abstract

The utility model discloses an elevator loose rope protection device, which relates to the technical field of elevators and comprises an angle steel frame, the bottom of the angle steel frame is fixedly connected with a base steel plate, the rear side of the angle steel frame is fixedly connected with a connecting steel plate, and the inner side and the outer side of the connecting steel plate are respectively provided with an inner cylinder and an outer cylinder. The inner side of the inner cylinder and the inner side of the outer cylinder are connected with steel pipes in an inserted mode, and the inner side of the angle steel frame is fixedly connected with an electric connecting base I. According to the utility model, the inner side of the angle steel frame is provided with a lower grating type detection switch through the electric connecting base I and an electric connecting base II, and the upper grating type detection switch and the lower grating type detection switch are adopted; relatively proper response time of 2-3 seconds is set, so that normal shaking time during operation of the steel wire rope can be avoided, fault alarm action can be quickly generated when the steel wire rope falls on the steel pipe when the rope is loosened really, an independent steel pipe cross rod is erected, and the steel wire can stay on the steel pipe when the steel wire rope is loosened too quickly. Therefore, the grating type detection switch can perform effective detection and reliable response.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a loose rope protection device for a hoist. Background Art

[0002] The loose rope protection device of the hoist has a certain response time. Once the steel rope loosens and falls too fast, and its falling speed is faster than the response time of the loose rope protection device, no loose rope alarm fault can be generated, leading to accidents. Moreover, during the operation of the hoist, the steel wire rope will inevitably swing. When the swing is slow, it will mis-trigger the loose rope protection alarm fault, affecting the operation of the equipment.

[0003] The existing hoist uses a disposable pull rope switch for steel wire loose rope detection, which has serious waste, cannot effectively avoid false alarms caused by the swing of the steel rope, and has low reliability. The simple grating type photoelectric switch for steel wire rope loose rope detection has the disadvantages of unreliable alarm due to the inability to accurately adjust the response time, and false alarms or inability to alarm caused by the ineffective control of the steel rope swing during the operation of the hoist. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a loose rope protection device for a hoist, so as to solve the problems that the existing hoist uses a disposable pull rope switch for steel wire loose rope detection, which has serious waste, cannot effectively avoid false alarms caused by the swing of the steel rope, and has low reliability. The simple grating type photoelectric switch for steel wire rope loose rope detection has the disadvantages of unreliable alarm due to the inability to accurately adjust the response time, and false alarms or inability to alarm caused by the ineffective control of the steel rope swing during the operation of the hoist.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A loose rope protection device for a hoist, including an angle steel frame, the bottom of the angle steel frame is fixedly connected with a base steel plate, and the rear side of the angle steel frame is fixedly connected with a connecting steel plate. An inner cylinder and an outer cylinder are respectively arranged on the inner side and the outer side of the connecting steel plate. A steel pipe is inserted into the inner sides of the inner cylinder and the outer cylinder. An electrical connection seat one is fixedly connected to the inner side of the angle steel frame. A lower grating type detection switch is electrically connected to the inner side of the electrical connection seat one. The top of the angle steel frame is fixedly connected with a cross beam through a fixing bolt, and a separate steel pipe cross bar is erected. When the steel wire rope loosens too fast, the steel wire can stay on the steel pipe, so that the grating type detection switch can effectively detect and respond reliably, and then generate a fault alarm. Setting a suitable response time for the grating type detection switch can avoid its overreaction and generate false alarms.

[0006] As a preferred technical solution of the utility model, expansion bolts are arranged at the bottom of the base steel plate, and the number of the expansion bolts is four.

[0007] As a preferred technical solution of the present utility model, the number of the connecting steel plates is two, and the two connecting steel plates are arranged vertically.

[0008] As a preferred technical solution of the present utility model, an electric connection seat II is provided at the inner top of the angle steel frame, and an upper grating type detection switch located above the lower grating type detection switch is provided on the side of the electric connection seat II; the lower grating type detection switch and the lower grating type detection switch are respectively installed on the inner side of the angle steel frame through the electric connection seat I and the electric connection seat II. The upper and lower grating type detection switches are adopted, and a relatively appropriate response time of 2-3 seconds is set so as to avoid the normal shaking time during the operation of the steel wire rope. When the steel wire rope is really loose, the steel wire rope falling on the steel pipe can quickly generate a fault alarm action.

[0009] As a preferred technical solution of the present utility model, an alarm lamp is fixedly connected to the inner top of the angle steel frame, and the alarm lamp is electrically connected to the upper grating type detection switch and the lower grating type detection switch respectively.

[0010] As a preferred technical solution of the present utility model, a convex block is fixedly connected to the top of the angle steel frame, and a threaded hole for threadedly connecting the bottom end of the fixing bolt is provided on the side of the convex block; the cross beam is installed on the top of the angle steel frame through the cooperation of the convex block and the card slot, and the cross beam can be quickly installed and disassembled, which is convenient for maintaining the equipment.

[0011] As a preferred technical solution of the present utility model, a card slot is provided at the bottom of the cross beam, and the inner side of the card slot is clamped with the convex block.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] In the present utility model, the cross beam is installed on the top of the angle steel frame through the cooperation of the convex block and the card slot, and the cross beam can be quickly installed and disassembled, which is convenient for maintaining the equipment. The lower grating type detection switch and the lower grating type detection switch are respectively installed on the inner side of the angle steel frame through the electric connection seat I and the electric connection seat II. The upper and lower grating type detection switches are adopted, and a relatively appropriate response time of 2-3 seconds is set so as to avoid the normal shaking time during the operation of the steel wire rope. When the steel wire rope is really loose, the steel wire rope falling on the steel pipe can quickly generate a fault alarm action.

[0014] In the present utility model, by erecting a separate steel pipe cross bar, when the steel wire rope loosens too fast, the steel wire can stay on the steel pipe so that the grating type detection switch can effectively detect and reliably respond, and then generate a fault alarm. Setting a suitable response time for the grating type detection switch can avoid its overreaction and false alarm. Description of the Drawings

[0015] Figure 1 It is the main structural view of the present utility model;

[0016] Figure 2 This is the partial front view of the structure of the present utility model;

[0017] Figure 3 This is the angle steel frame diagram of the structure of the present utility model;

[0018] Figure 4 This is the crossbeam diagram of the structure of the present utility model.

[0019] In the figure: 1. Angle steel frame; 2. Base steel plate; 3. Expansion bolt; 4. Connecting steel plate; 5. Outer cylinder; 6. Inner cylinder; 7. Steel pipe; 8. Electrical connection seat one; 9. Lower grating type detection switch; 10. Electrical connection seat two; 11. Upper grating type detection switch; 12. Alarm lamp; 13. Fixed bolt; 14. Crossbeam; 15. Convex block; 16. Threaded hole; 17. Card slot. Specific embodiments

[0020] 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.

[0021] Please refer to Figures 1-4 , the present utility model provides a rope slack protection device for a hoist, including an angle steel frame 1. The bottom of the angle steel frame 1 is fixedly connected with a base steel plate 2, and the rear side of the angle steel frame 1 is fixedly connected with a connecting steel plate 4. An inner cylinder 6 and an outer cylinder 5 are respectively arranged on the inner side and the outer side of the connecting steel plate 4. A steel pipe 7 is inserted into the inner sides of the inner cylinder 6 and the outer cylinder 5. An electrical connection seat one 8 is fixedly connected to the inner side of the angle steel frame 1. A lower grating type detection switch 9 is electrically connected to the inner side of the electrical connection seat one 8. A crossbeam 14 is fixedly connected to the top of the angle steel frame 1 through a fixed bolt 13. A separate steel pipe 7 crossbar is erected. When the steel wire rope loosens too fast, the steel wire can stay on the steel pipe 7, so that the grating type detection switch can effectively detect and reliably respond, and then generate a fault alarm. Setting a suitable response time for the grating type detection switch can avoid its overreaction and generate false alarms.

[0022] In summary, by installing the cross beam 14 on the top of the angle steel frame 1 through the cooperation of the convex block 15 and the card slot 17, the cross beam 14 can be quickly installed and disassembled, which is convenient for maintaining the equipment. The lower grating type detection switch 9 and the lower grating type detection switch 9 are respectively installed on the inner side of the angle steel frame 1 through the electrical connection base one 8 and the electrical connection base two 10. The upper and lower grating type detection switches 9 are adopted, and a relatively appropriate response time of 2-3 seconds is set, so as to avoid the normal shaking time during the operation of the steel wire rope. When the steel wire rope actually loosens, the steel wire rope falling on the steel pipe 7 can quickly generate a fault alarm action. A separate steel pipe 7 cross bar is erected. When the steel wire rope loosens too fast, the steel wire can stay on the steel pipe 7, so that the grating type detection switch can effectively detect and respond reliably, and then generate a fault alarm. Setting an appropriate response time for the grating type detection switch can avoid its overreaction and false alarm, solving the problems existing in the existing hoist that uses a one-time pull rope type switch for steel wire rope slack detection, such as serious waste, inability to effectively avoid false alarms caused by the swing of the steel wire rope, and low reliability. The simple grating type photoelectric switch for steel wire rope slack detection has the disadvantages of unreliable alarm due to inaccurate adjustment of the response time, and false alarm or inability to alarm caused by the ineffective control of the swing of the steel wire rope during the operation of the hoist.

[0023] The bottom of the base steel plate 2 is provided with expansion bolts 3. The number of the expansion bolts 3 is four. The number of the connecting steel plates 4 is two. The two connecting steel plates 4 are arranged up and down. The inner top of the angle steel frame 1 is provided with an electrical connection base two 10. The side of the electrical connection base two 10 is provided with an upper grating type detection switch 11 above the lower grating type detection switch 9. The lower grating type detection switch 9 and the lower grating type detection switch 9 are respectively installed on the inner side of the angle steel frame 1 through the electrical connection base one 8 and the electrical connection base two 10. The upper and lower grating type detection switches 9 are adopted, and a relatively appropriate response time of 2-3 seconds is set, so as to avoid the normal shaking time during the operation of the steel wire rope. When the steel wire rope actually loosens, the steel wire rope falling on the steel pipe 7 can quickly generate a fault alarm action.

[0024] The inner top of the top of the angle steel frame 1 is fixedly connected with an alarm lamp 12. The alarm lamp 12 is electrically connected with the upper grating type detection switch 11 and the lower grating type detection switch 9 respectively. The top of the angle steel frame 1 is fixedly connected with a convex block 15. The side of the convex block 15 is provided with a threaded hole 16 threadedly connected with the bottom end of the fixing bolt 13. The cross beam 14 is installed on the top of the angle steel frame 1 through the cooperation of the convex block 15 and the card slot 17. The cross beam 14 can be quickly installed and disassembled, which is convenient for maintaining the equipment. The bottom of the cross beam 14 is provided with a card slot 17. The inner side of the card slot 17 is clamped with the convex block 15.

[0025] During specific use, first, the cross beam 14 is installed at the top of the angle steel frame 1 through the cooperation of the convex block 15 and the clamping groove 17, which enables the quick installation and disassembly of the cross beam 14, facilitating the maintenance of the equipment. Moreover, the lower grating type detection switches 9 are respectively installed on the inner side of the angle steel frame 1 through the first electrical connection base 8 and the second electrical connection base 10. By using the upper and lower grating type detection switches 9 and setting a relatively appropriate response time of 2-3 seconds, it is possible to avoid the normal shaking time during the operation of the steel wire rope. When the steel wire rope actually becomes loose, the steel rope falling on the steel pipe 7 can quickly trigger a fault alarm action. A separate steel pipe 7 cross bar is erected, so that when the steel wire rope loosens too quickly, the steel wire can stay on the steel pipe 7, enabling the grating type detection switch to effectively detect and respond reliably, thereby generating a fault alarm. Setting an appropriate response time for the grating type detection switch can prevent it from overreacting and generating false alarms.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hoist rope slack protection device, comprising an angle steel frame (1), characterized in that: The bottom of the angle steel frame (1) is fixedly connected to a base steel plate (2), and the rear side of the angle steel frame (1) is fixedly connected to a connecting steel plate (4), the inner side and the outer side of the connecting steel plate (4) are respectively provided with an inner tube (6) and an outer tube (5), and the inner sides of the inner tube (6) and the outer tube (5) are plugged with a steel pipe (7), the inner side of the angle steel frame (1) is fixedly connected to an electrical connection seat (8), and the inner side of the electrical connection seat (8) is electrically connected to a lower grating detection switch (9), and the top of the angle steel frame (1) is fixedly connected to a crossbeam (14) via fixing bolts (13).

2. A hoist slack rope protection device according to claim 1, characterized in that: Expansion bolts (3) are provided at the bottom of the base steel plate (2), and the number of the expansion bolts (3) is four.

3. A hoist slack rope protection device according to claim 1, characterized in that: The number of the connecting steel plates (4) is two, and the two connecting steel plates (4) are arranged up and down.

4. A hoist slack rope protection device according to claim 1, characterized in that: A second electrical connection seat (10) is provided on the inner top of the angle steel frame (1), and an upper grating detection switch (11) located above the lower grating detection switch (9) is provided on the side of the second electrical connection seat (10).

5. The hoist slack rope protection device according to claim 1, characterized in that: An alarm light (12) is fixedly connected to the inner side of the top of the angle steel frame (1), and the alarm light (12) is electrically connected to the upper grating detection switch (11) and the lower grating detection switch (9) respectively.

6. A hoist slack rope protection device according to claim 1, characterized in that: A protrusion (15) is fixedly connected to the top of the angle steel frame (1), and a threaded hole (16) threadedly connected to the bottom end of the fixing bolt (13) is provided on the side of the protrusion (15).

7. A hoist slack rope protection device according to claim 1, characterized in that: A clamping groove (17) is provided at the bottom of the crossbeam (14), and the inner side of the clamping groove (17) is clamped with the protrusion (15).

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