An elevator brake failure monitoring device

Abstract

This invention belongs to the field of elevator monitoring technology and discloses an elevator brake fault monitoring device, including a column with a longitudinal guide groove inside. A crossbar is fixedly installed at the bottom of the column, and transverse guide grooves are provided on both sides of the crossbar. A longitudinal guide block is movably engaged inside the longitudinal guide groove, and the longitudinal guide block moves vertically relative to the longitudinal guide groove. This invention links two braking components with the longitudinal guide block and uses injected hydraulic oil to adjust the height of the tactile switch, allowing it to adjust the warning threshold according to different wear states and trigger the warning mechanically. The entire process does not require external sensors or cameras, resulting in low overall operating costs. Furthermore, because two braking components are linked simultaneously, the wear state of the two brake shoes can be monitored in real time, thus improving monitoring efficiency.

Description

Technical Field

[0001] This invention belongs to the field of elevator monitoring technology, specifically an elevator brake fault monitoring device. Background Technology

[0002] Elevator brakes are crucial safety devices in elevators, and their safety and reliability are essential for ensuring safe elevator operation. Their primary purpose is to automatically stop the elevator in the event of a power outage or loss of control, ensuring the safety of passengers and equipment. The working principle of elevator brakes is based on electromagnetism. When energized, the electromagnetic coil generates an electromagnetic force, guiding the brake arm and brake spring to disengage the braking mechanism from the rotating parts of the motor, thus releasing the elevator or allowing it to resume operation. In the event of a power outage, the electromagnetic force disappears, and the brake, under the pressure of an external brake spring, forms a friction brake, stopping the elevator.

[0003] Conventional elevator brakes rely primarily on friction between the brake shoes and the brake disc for braking. This method results in significant friction between the brake shoes and the brake disc, leading to excessive wear of the brake shoes after prolonged use. Consequently, the braking force of the brake shoes will be significantly reduced. Current technologies typically rely on cameras or sensors to monitor the wear of the brake shoes. While this monitoring method can issue warnings when excessive wear occurs, it requires monitoring devices to be installed at at least two brake shoes, resulting in high operating costs and the need to monitor the wear status of both brake shoes simultaneously.

[0004] When braking an elevator, the main braking force comes from the locking between the brake shoes and the brake disc. However, when the brake shoes are excessively worn, the braking force will decrease significantly. If the brake shoes are not replaced in time, the elevator will not be able to brake in time while it is in operation, posing a significant safety hazard. Therefore, it is crucial to maintain a certain braking force when the brake shoes are excessively worn and have not been replaced. Summary of the Invention

[0005] The purpose of this invention is to provide an elevator brake fault monitoring device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an elevator brake fault monitoring device, comprising a column, a longitudinal guide groove inside the column, a crossbar fixedly installed at the bottom end of the column, transverse guide grooves on both the left and right sides of the crossbar, a longitudinal guide block movably engaged inside the longitudinal guide groove, the longitudinal guide block moving vertically relative to the longitudinal guide groove, a top warning component embedded at the top end of the longitudinal guide groove, the top warning component being located directly above the longitudinal guide block, a main cylinder fixedly installed at the bottom end of the longitudinal guide groove, the output end of the main cylinder being connected to the middle of the bottom end of the longitudinal guide block, brake components movably engaged inside the transverse guide grooves, the brake components being symmetrically installed on the left and right sides of the bottom end of the longitudinal guide block, a top warning component installed at the rear end of each of the two brake components, oil supply pipes fixedly connected to the left and right sides of the top of the top warning component, the other end of each oil supply pipe being connected to a side auxiliary component.

[0007] Before use, the longitudinal guide groove needs to be fixed near the elevator brake using fixing bolts to ensure that the device can follow the movement of the brake. At the same time, the elevator brake disc needs to be installed between the two brake components, and it needs to be ensured that the distance between the two brake components and the outer side of the brake disc is the same, thus completing the preparation before monitoring.

[0008] As a further technical solution of the present invention, the braking assembly includes a first fixed seat, which is fixedly installed on the left or right side of the bottom end of the longitudinal guide block. The end of the first fixed seat away from the longitudinal guide block is movably connected to a connecting rod via a rotating shaft, and the end of the connecting rod away from the first fixed seat is movably connected to a second fixed seat via a rotating shaft.

[0009] As a further technical solution of the present invention, the bottom end of the second fixed base is fixedly connected with a transverse guide block, the transverse guide block is movably engaged with the transverse guide groove, the transverse guide block moves left and right relative to the transverse guide groove, the bottom end of the transverse guide block is fixedly connected with a brake clamp, and the middle of the two brake clamps that are close to each other are bolted with brake shoes.

[0010] Under normal conditions, the brake disc located between the two braking components can rotate with the motor to move the elevator up and down. When the elevator needs to be braked, the main cylinder can be activated to drive the longitudinal guide block to move upward. At this time, the two connecting rods at the bottom of the longitudinal guide block deflect, that is, both connecting rods deflect inward. The included angle between the two connecting rods decreases, and the two transverse guide blocks are displaced relative to the transverse guide groove. This causes the two brake clamps to move closer together until the two brake shoes move closer together and come into contact with the brake disc in the middle, completing the braking process.

[0011] Conversely, by opening the master cylinder and controlling its shortening, the longitudinal guide block descends accordingly, which drives the two brake shoes away from each other, releasing their contact with the brake disc and completing the brake release process.

[0012] As a further technical solution of the present invention, the top warning component includes an oil storage pipe, which is embedded in the interior of a longitudinal guide groove. The top end of the oil storage pipe is fixedly connected to a No. 1 three-way valve, the top end of which is connected to an external oil pipe. The rear end of the No. 1 three-way valve is fixedly connected to a No. 2 three-way valve, and both the left and right ends of the No. 2 three-way valve are connected to an oil delivery pipe.

[0013] As a further technical solution of the present invention, a first piston plate is movably sleeved inside the oil storage pipe, and hydraulic oil is filled between the top end of the inner cavity of the oil storage pipe and the top end of the first piston plate. A first piston rod located inside the oil storage pipe is fixedly connected to the bottom end of the first piston plate, and a tactile switch is fixedly connected to the bottom end of the first piston rod through the bottom end of the oil storage pipe.

[0014] As a further technical solution of the present invention, the tactile switch is located directly above the longitudinal guide block, and a first return spring is movably sleeved on the outer side of the first piston rod. The upper and lower ends of the first return spring are respectively connected to the bottom end of the first piston plate and the bottom end of the inner cavity of the oil reservoir.

[0015] Before use, the position of the tactile switch can be calibrated according to the wear of the brake shoes. As wear progresses, the height of the longitudinal guide block will increase during each full braking state. When the longitudinal guide block reaches its limit position, it indicates that the brake shoes are in an excessively worn state. By opening the valve at the top of the No. 1 three-way valve, hydraulic oil can be injected into the No. 1 three-way valve through the external oil pipe. At this time, the first piston plate moves downward and drives the first piston rod at the bottom to move downward, and the first return spring can be compressed. The tactile switch then descends. When the tactile switch descends to the predetermined height, the input of hydraulic oil into the oil reservoir is stopped, and the valve at the top of the No. 1 three-way valve is closed, completing the warning height adjustment process.

[0016] When the brake shoe is excessively worn, the longitudinal guide block rises higher until its top end contacts the bottom end of the tactile switch. At this point, the tactile switch is powered on and the external warning light is activated, completing the over-wear warning process.

[0017] By linking the two braking components with the longitudinal guide block and adjusting the height of the tactile switch with the injected hydraulic oil, the warning threshold can be adjusted according to different wear conditions, and the warning can be triggered mechanically. The whole process does not require the assistance of external sensors and cameras, and the overall cost of use is low. At the same time, since the two braking components are linked at the same time, the wear condition of the two brake shoes can be monitored in real time, thereby improving the monitoring efficiency.

[0018] As a further technical solution of the present invention, the side auxiliary component includes an arc frame, which is installed at the rear end of the brake shoe. A temporary storage tube is fixedly installed at an equal distance and in an arc shape at the end of the arc frame away from the brake shoe. The side auxiliary component also includes a distribution tank located at the rear end of the temporary storage tube. The end of the distribution tank near the arc frame is fixedly connected to the temporary storage tube.

[0019] As a further technical solution of the present invention, the middle part of the distribution tank away from the arc frame is connected to the other end of the oil pipeline. The interior of the temporary storage tube is movably sleeved with a second piston plate. The end of the second piston plate away from the distribution tank is fixedly connected with a second piston rod. The outer side of the second piston rod is movably sleeved with a second return spring. The front and rear ends of the second return spring are respectively connected to one end of the second piston plate and one end of the temporary storage tube.

[0020] As a further technical solution of the present invention, the end of the second piston rod away from the distribution tank passes through one end of the temporary storage tube and is fixedly connected to a spare brake pad. When the second return spring is in the ultimate tension state, one end of the second piston plate is in contact with one end of the inner cavity of the temporary storage tube, and one end of the spare brake pad is in contact with one end of the brake shoe.

[0021] When the brake shoe is in an excessively worn state, the continued upward movement of the longitudinal guide block can apply upward pressure to the tactile switch. At this time, the hydraulic oil inside the oil reservoir can enter the interior of the No. 1 three-way valve, open the pressure valve, and enter the interior of the No. 2 three-way valve. It is then transported through the oil delivery pipe into the interior of the two side auxiliary components. The hydraulic oil then enters the interior of the distribution tank and, after distribution, enters the interior of multiple temporary storage pipes. At this time, multiple second piston plates are subjected to pressure, which drives the corresponding second piston rods and spare brake pads to move towards the brake shoe. The spare brake pads then move to the inner side of the brake shoe, and the multiple spare brake pads temporarily replace the brake shoe to achieve a temporary braking process.

[0022] By reusing the hydraulic oil input during the adjustment of the top warning component, and in conjunction with the upward displacement of the longitudinal guide block when excessive wear occurs, the backup brake pad automatically extends when excessive wear occurs, thus temporarily replacing the original brake shoe to achieve the braking process. The entire process is completed automatically, effectively avoiding the problem of reduced braking force caused by excessive wear of the brake shoe in traditional devices without replacement, effectively ensuring that the braking force meets the standards and improving the safety factor of the elevator.

[0023] When any part of the brake shoe is excessively worn, but the entire area is not completely worn, the spare brake pad at the corresponding position is no longer subjected to the resisting force from the brake shoe. At this time, the second return spring automatically resets, which can drive the spare brake pad and the second piston rod to automatically reset, so that the spare brake pad in the designated area can automatically extend and replace the notch at the corresponding position to realize the braking process, thus completing the automatic compensation process of braking force in the designated area when the wear is uneven.

[0024] By setting multiple spare brake pads and installing them along the arc of the brake shoe, when the brake shoe wears unevenly and corresponding gaps appear, the spare brake pad at the corresponding position can automatically extend and perform the braking force compensation process. The whole process is completed automatically, which effectively avoids the problem of reduced braking force and affected braking balance caused by uneven wear of the brake shoe in traditional devices. This significantly improves braking comfort and increases the corresponding safety factor.

[0025] The beneficial effects of this invention are as follows: 1. This invention links two braking components with a longitudinal guide block and uses injected hydraulic oil to adjust the height of a tactile switch. This allows the switch to adjust the warning threshold according to different wear conditions and trigger the warning mechanically. The entire process does not require external sensors or cameras, resulting in low overall operating costs. Furthermore, by linking two braking components simultaneously, the wear condition of the two brake shoes can be monitored in real time, thereby improving monitoring efficiency.

[0026] 2. This invention reuses the hydraulic oil input during the adjustment of the top warning component. When excessive wear occurs, the longitudinal guide block can be moved upward. When excessive wear occurs, the spare brake pad automatically extends to temporarily replace the original brake shoe to achieve the braking process. The whole process is completed automatically, which effectively avoids the problem of reduced braking force caused by excessive wear of the brake shoe in traditional devices. This effectively ensures that the braking force meets the standard and improves the safety factor of the elevator.

[0027] 3. By setting multiple spare brake pads and installing them along the arc direction of the brake shoe, when the brake shoe wears unevenly and corresponding gaps appear, the spare brake pad at the corresponding position can automatically extend and perform the braking force compensation process. The whole process is completed automatically, which effectively avoids the problem of reduced braking force and affected braking balance caused by uneven wear of the brake shoe in traditional devices. It significantly improves braking comfort and increases the corresponding safety factor. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the back-end structure of the present invention; Figure 3 This is a schematic diagram showing the assembly of the column, crossbar, and braking component structure of the present invention. Figure 4 This is a separate schematic diagram of the braking assembly structure of the present invention; Figure 5 This is a schematic diagram showing the assembly of the column, crossbar, and longitudinal guide block structure of the present invention. Figure 6 This is a schematic diagram showing the cooperation between the top warning component and the oil pipeline structure of the present invention; Figure 7 This is a cross-sectional schematic diagram of the top warning component structure of the present invention; Figure 8 This is a separate schematic diagram of the side auxiliary component structure of the present invention; Figure 9 This is a partial cross-sectional schematic diagram of the side auxiliary component structure of the present invention.

[0029] In the diagram: 1. Column; 2. Longitudinal guide groove; 3. Crossbar; 4. Transverse guide groove; 5. Longitudinal guide block; 6. Main cylinder; 7. Braking assembly; 701. First fixed seat; 702. Second fixed seat; 703. Connecting rod; 704. Transverse guide block; 705. Brake clamp; 706. Brake shoe; 8. Top warning assembly; 801. Oil reservoir pipe; 802. First piston plate; 803. First piston rod; 804. First return spring; 805. Tactile switch; 806. No. 1 three-way valve; 807. No. 2 three-way valve; 9. Side auxiliary assembly; 901. Arc frame; 902. Distribution tank; 903. Temporary storage pipe; 904. Second piston plate; 905. Second piston rod; 906. Second return spring; 907. Spare brake pad; 10. Oil supply pipe. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1 to 9 As shown in the embodiment of the present invention, an elevator brake fault monitoring device includes a column 1. A longitudinal guide groove 2 is provided inside the column 1. A crossbar 3 is fixedly installed at the bottom end of the column 1. A transverse guide groove 4 is provided on both the left and right sides of the crossbar 3. A longitudinal guide block 5 is movably engaged inside the longitudinal guide groove 2. The longitudinal guide block 5 moves up and down relative to the longitudinal guide groove 2. A top warning component 8 is embedded in the top of the longitudinal guide groove 2. The top warning component 8 is located directly above the longitudinal guide block 5. A main cylinder 6 is fixedly installed at the bottom end of the inner cavity of the longitudinal guide groove 2. The output end of the main cylinder 6 is connected to the middle of the bottom end of the longitudinal guide block 5. Braking components 7 are movably engaged inside the transverse guide grooves 4. The braking components 7 are symmetrically installed on the left and right sides of the bottom end of the longitudinal guide block 5. A top warning component 8 is installed at the rear end of each of the two braking components 7. Oil supply pipes 10 are fixedly connected to the left and right sides of the top of the top of the top warning component 8. The other end of each oil supply pipe 10 is connected to a side auxiliary component 9.

[0032] Before use, the longitudinal guide groove 2 needs to be fixed near the elevator brake using fixing bolts to ensure that the device can follow the movement of the brake. At the same time, the elevator brake disc needs to be installed between the two brake components 7, and the distance between the two brake components 7 and the outer side of the brake disc should be the same to complete the preparation before monitoring.

[0033] like Figure 2 and Figure 3 as well as Figure 4 As shown, the braking assembly 7 includes a first fixed seat 701, which is fixedly installed on the left or right side of the bottom end of the longitudinal guide block 5. The end of the first fixed seat 701 away from the longitudinal guide block 5 is movably connected to a connecting rod 703 via a rotating shaft. The end of the connecting rod 703 away from the first fixed seat 701 is movably connected to a second fixed seat 702 via a rotating shaft. The bottom end of the second fixed seat 702 is fixedly connected to a transverse guide block 704. The transverse guide block 704 is movably engaged with the transverse guide groove 4. The transverse guide block 704 moves left and right relative to the transverse guide groove 4. The bottom end of the transverse guide block 704 is fixedly connected to a brake clamp 705. The middle of the two brake clamps 705, which are close to each other, is bolted with a brake shoe 706.

[0034] Under normal conditions, the brake disc located between the two braking components 7 can rotate with the motor to realize the elevator's up and down movement. When the elevator needs to be braked, the main cylinder 6 can be opened to drive the longitudinal guide block 5 to move upward. At this time, the two connecting rods 703 at the bottom of the longitudinal guide block 5 will deflect, that is, drive the two connecting rods 703 to deflect inward. At this time, the included angle between the two connecting rods 703 will decrease, and the two transverse guide blocks 704 will move relative to the transverse guide groove 4, which will drive the two brake clamps 705 to move closer together, until the two brake shoes 706 move closer together and come into contact with the brake disc in the middle, thus completing the braking process.

[0035] Conversely, by opening the main cylinder 6 and controlling its shortening, the longitudinal guide block 5 will descend accordingly, which will drive the two brake shoes 706 away from each other, releasing their contact with the brake disc and completing the brake release process.

[0036] like Figure 1 and Figure 2 as well as Figure 6 and Figure 7 As shown, the top warning assembly 8 includes an oil storage pipe 801, which is embedded inside the longitudinal guide groove 2. The top end of the oil storage pipe 801 is fixedly connected to a first three-way valve 806, which is connected to an external oil pipe. The rear end of the first three-way valve 806 is fixedly connected to a second three-way valve 807, whose left and right ends are connected to the oil supply pipe 10. A first piston plate 802 is movably sleeved inside the oil storage pipe 801. Hydraulic oil is filled between the top end of the inner cavity of the oil storage pipe 801 and the top end of the first piston plate 802. The bottom end of the stopper plate 802 is fixedly connected to a first piston rod 803 located inside the oil storage pipe 801. The bottom end of the first piston rod 803 passes through the bottom end of the oil storage pipe 801 and is fixedly connected to a tactile switch 805. The tactile switch 805 is located directly above the longitudinal guide block 5. A first return spring 804 is movably sleeved on the outer side of the first piston rod 803. The upper and lower ends of the first return spring 804 are respectively connected to the bottom end of the first piston plate 802 and the bottom end of the inner cavity of the oil storage pipe 801. A pressure valve is installed at the connection between the first three-way valve 806 and the second three-way valve 807.

[0037] Example 1: Before use, the position of the tactile switch 805 can be calibrated according to the wear degree of the brake shoe 706. As wear progresses, the height of the longitudinal guide block 5 will increase during each full braking state. When the longitudinal guide block 5 reaches the limit position, it indicates that the brake shoe 706 is in an over-wear state. By opening the valve at the top of the No. 1 three-way valve 806, hydraulic oil can be injected into the No. 1 three-way valve 806 through the external oil pipe. At this time, the first piston plate 802 moves downward and drives the first piston rod 803 at the bottom to move downward. The first return spring 804 can be compressed, and the tactile switch 805 descends accordingly. When the tactile switch 805 descends to the predetermined height, the input of hydraulic oil into the oil reservoir 801 can be stopped, and the valve at the top of the No. 1 three-way valve 806 is closed, completing the warning height adjustment process.

[0038] When the brake shoe 706 is excessively worn, the rising height of the longitudinal guide block 5 increases until the top of the longitudinal guide block 5 contacts the bottom of the tactile switch 805. At this time, the power supply of the tactile switch 805 is immediately turned on, and the external warning light is turned on simultaneously, completing the warning process for excessive wear.

[0039] By linking the two braking components 7 with the longitudinal guide block 5 and using the injected hydraulic oil to adjust the height of the tactile switch 805, the warning threshold can be adjusted according to different wear conditions, and the warning can be triggered mechanically. The whole process does not require the assistance of external sensors and cameras, and the overall cost of use is low. At the same time, since the two braking components 7 are linked at the same time, the wear condition of the two brake shoes 706 can be monitored in real time, and the monitoring efficiency is improved accordingly.

[0040] like Figure 1 and Figure 2 as well as Figure 8 and Figure 9As shown, the side auxiliary component 9 includes an arc frame 901, which is installed at the rear end of the brake shoe 706. A temporary storage tube 903 is fixedly installed at an equal distance and in an arc shape at the end of the arc frame 901 away from the brake shoe 706. The side auxiliary component 9 also includes a distribution tank 902 located at the rear end of the temporary storage tube 903. The end of the distribution tank 902 near the arc frame 901 is fixedly connected to the temporary storage tube 903. The middle part of the end of the distribution tank 902 away from the arc frame 901 is connected to the other end of the oil supply pipe 10. A second piston plate 904 is movably sleeved inside the temporary storage tube 903. The second piston plate 904 is located away from the distribution tank 903. One end of 02 is fixedly connected to a second piston rod 905. The outer side of the second piston rod 905 is movably sleeved with a second return spring 906. The front and rear ends of the second return spring 906 are respectively connected to one end of the second piston plate 904 and one end of the temporary storage tube 903. The end of the second piston rod 905 away from the distribution tank 902 passes through one end of the temporary storage tube 903 and is fixedly connected to a spare brake pad 907. When the second return spring 906 is in the ultimate tension state, one end of the second piston plate 904 is in contact with one end of the inner cavity of the temporary storage tube 903, and one end of the spare brake pad 907 is in contact with one end of the brake shoe 706.

[0041] Example 2: When the brake shoe 706 is in an excessively worn state, the continued upward movement of the longitudinal guide block 5 can apply upward pressure to the tactile switch 805. At this time, the hydraulic oil inside the oil reservoir 801 can enter the interior of the first three-way valve 806, open the pressure valve, and enter the interior of the second three-way valve 807. It is then transported into the interior of the two side auxiliary components 9 through the oil supply pipe 10. At this time, the hydraulic oil enters the interior of the distribution tank 902 and, after distribution, enters the interior of multiple temporary storage pipes 903. At this time, multiple second piston plates 904 are subjected to pressure, which drives the corresponding second piston rod 905 and the spare brake pad 907 to move towards the brake shoe 706. At this time, the spare brake pad 907 moves to the inner side of the brake shoe 706 and temporarily replaces the brake shoe 706 to achieve a temporary braking process.

[0042] By reusing the hydraulic oil input during the adjustment of the top warning component 8, and in conjunction with the upward displacement of the longitudinal guide block 5 when excessive wear occurs, the spare brake pad 907 automatically extends when excessive wear occurs, thereby temporarily replacing the original brake shoe 706 to achieve the braking process. The entire process is completed automatically, effectively avoiding the problem of reduced braking force caused by excessive wear of the brake shoe in traditional devices without replacement, effectively ensuring that the braking force meets the standard and improving the safety factor of the elevator.

[0043] When any part of the brake shoe 706 is excessively worn, but the entire position is not completely worn, the spare brake pad 907 at the corresponding position is no longer subjected to the resisting force from the brake shoe 706. At this time, the second return spring 906 automatically resets, which can drive the spare brake pad 907 and the second piston rod 905 to automatically reset, so that the spare brake pad 907 in the designated area automatically extends and replaces the notch at the corresponding position to realize the braking process, thus completing the automatic compensation process of braking force in the designated area when the wear is uneven.

[0044] By setting multiple spare brake pads 907 and installing them along the arc of the brake shoe 706, when the brake shoe 706 experiences uneven wear and corresponding gaps, the spare brake pads 907 at the corresponding positions can automatically extend and perform a braking force compensation process. The entire process is completed automatically, effectively avoiding the problem of reduced braking force of the brake shoe 706 due to uneven wear in traditional devices, which affects braking balance. This significantly improves braking comfort and increases the corresponding safety factor.

[0045] Working principle and usage process: Before use, the longitudinal guide groove 2 needs to be fixed near the elevator brake using fixing bolts to ensure that the device can follow the movement of the brake. At the same time, the elevator brake disc needs to be installed between the two brake components 7, and the distance between the two brake components 7 and the outer side of the brake disc should be the same to complete the preparation before monitoring. Under normal conditions, the brake disc located between the two braking components 7 can rotate with the motor to realize the elevator's up and down movement. When the elevator needs to be braked, the main cylinder 6 can be opened to drive the longitudinal guide block 5 to move upward. At this time, the two connecting rods 703 at the bottom of the longitudinal guide block 5 will deflect, that is, drive the two connecting rods 703 to deflect inward. At this time, the included angle between the two connecting rods 703 will decrease, and the two transverse guide blocks 704 will move relative to the transverse guide groove 4, which will drive the two brake clamps 705 to move closer together until the two brake shoes 706 move closer together and contact the brake disc in the middle, thus completing the braking process. Conversely, by opening the main cylinder 6 and controlling its shortening, the longitudinal guide block 5 will descend accordingly, which will drive the two brake shoes 706 away from each other, releasing their contact with the brake disc and completing the brake release process. Before use, the position of the tactile switch 805 can be calibrated according to the wear degree of the brake shoe 706. As wear progresses, the height of the longitudinal guide block 5 will increase during each full braking state. When the longitudinal guide block 5 reaches the limit position, it indicates that the brake shoe 706 is in an over-wear state. By opening the valve at the top of the No. 1 three-way valve 806, hydraulic oil can be injected into the No. 1 three-way valve 806 through the external oil pipe. At this time, the first piston plate 802 moves downward and can drive the first piston rod 803 at the bottom to move downward. The first return spring 804 can be compressed. At this time, the tactile switch 805 descends. When the tactile switch 805 descends to the predetermined height, the input of hydraulic oil into the oil reservoir 801 can be stopped, and the valve at the top of the No. 1 three-way valve 806 is closed, completing the warning height adjustment process. When the brake shoe 706 is excessively worn, the rising height of the longitudinal guide block 5 increases until the top of the longitudinal guide block 5 contacts the bottom of the tactile switch 805. At this time, the power supply of the tactile switch 805 is immediately turned on, and the external warning light is turned on simultaneously, completing the warning process of excessive wear. When the brake shoe 706 is in an excessively worn state, the continued upward movement of the longitudinal guide block 5 can apply upward pressure to the tactile switch 805. At this time, the hydraulic oil inside the oil reservoir 801 can enter the interior of the first three-way valve 806, open the pressure valve, and enter the interior of the second three-way valve 807. It is then transported through the oil supply pipe 10 into the interior of the two side auxiliary components 9. The hydraulic oil then enters the interior of the distribution tank 902 and, after distribution, enters the interior of multiple temporary storage pipes 903. At this time, multiple second piston plates 904 are subjected to pressure, which drives the corresponding second piston rod 905 and the spare brake pad 907 to move towards the brake shoe 706. The spare brake pad 907 is then moved to the inner side of the brake shoe 706, and the multiple spare brake pads 907 temporarily replace the brake shoe 706 to achieve a temporary braking process. When any part of the brake shoe 706 is excessively worn, but the entire position is not completely worn, the spare brake pad 907 at the corresponding position is no longer subjected to the resisting force from the brake shoe 706. At this time, the second return spring 906 automatically resets, which can drive the spare brake pad 907 and the second piston rod 905 to automatically reset, so that the spare brake pad 907 in the designated area automatically extends and replaces the notch at the corresponding position to realize the braking process, thus completing the automatic compensation process of braking force in the designated area when the wear is uneven.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator brake failure monitoring device comprising a post (1), characterized in that: The column (1) has a longitudinal guide groove (2) inside. A crossbar (3) is fixedly installed at the bottom of the column (1). A transverse guide groove (4) is opened on both the left and right sides of the crossbar (3). A longitudinal guide block (5) is movably engaged inside the longitudinal guide groove (2). The longitudinal guide block (5) moves up and down relative to the longitudinal guide groove (2). A top warning component (8) is embedded at the top of the longitudinal guide groove (2). The top warning component (8) is located directly above the longitudinal guide block (5). The bottom of the inner cavity of the longitudinal guide groove (2) is fixed. A main cylinder (6) is fixedly installed. The output end of the main cylinder (6) is connected to the middle of the bottom end of the longitudinal guide block (5). The interior of the transverse guide groove (4) is movably engaged with a braking assembly (7). The braking assembly (7) is symmetrically installed on the left and right sides of the bottom end of the longitudinal guide block (5). The rear ends of the two braking assemblies (7) are each equipped with a top warning assembly (8). The top left and right sides of the top of the top warning assembly (8) are fixedly connected with oil pipes (10). The other end of the oil pipes (10) is connected to the side auxiliary assembly (9).

2. An elevator brake failure monitoring device according to claim 1, characterized in that: The braking assembly (7) includes a first fixed seat (701), which is fixedly installed on the left or right side of the bottom end of the longitudinal guide block (5). The end of the first fixed seat (701) away from the longitudinal guide block (5) is movably connected to a connecting rod (703) via a rotating shaft. The end of the connecting rod (703) away from the first fixed seat (701) is movably connected to a second fixed seat (702) via a rotating shaft.

3. An elevator brake failure monitoring device according to claim 2, characterized in that: The bottom end of the second fixed seat (702) is fixedly connected to a transverse guide block (704). The transverse guide block (704) is movably engaged with the transverse guide groove (4). The transverse guide block (704) moves left and right relative to the transverse guide groove (4). The bottom end of the transverse guide block (704) is fixedly connected to a brake clamp (705). The brake clamps (705) are respectively bolted to the middle of one end of each brake clamp (705).

4. An elevator brake failure monitoring device according to claim 1, characterized in that: The top warning component (8) includes an oil storage pipe (801), which is embedded in the interior of the longitudinal guide groove (2). The top end of the oil storage pipe (801) is fixedly connected to a No. 1 three-way valve (806), the top end of the No. 1 three-way valve (806) is connected to an external oil pipe, and the rear end of the No. 1 three-way valve (806) is fixedly connected to a No. 2 three-way valve (807). Both the left and right ends of the No. 2 three-way valve (807) are connected to the oil delivery pipe (10).

5. An elevator brake failure monitoring device according to claim 4, characterized in that: The oil storage pipe (801) is movably sleeved with a first piston plate (802). Hydraulic oil is filled between the top end of the inner cavity of the oil storage pipe (801) and the top end of the first piston plate (802). The bottom end of the first piston plate (802) is fixedly connected to a first piston rod (803) located inside the oil storage pipe (801). The bottom end of the first piston rod (803) passes through the bottom end of the oil storage pipe (801) and is fixedly connected to a tactile switch (805).

6. An elevator brake failure monitoring device according to claim 5, characterized in that: The tactile switch (805) is located directly above the longitudinal guide block (5). The outer side of the first piston rod (803) is movably sleeved with a first return spring (804). The upper and lower ends of the first return spring (804) are respectively connected to the bottom end of the first piston plate (802) and the bottom end of the inner cavity of the oil reservoir (801).

7. An elevator brake failure monitoring device according to claim 3, characterized in that: The side auxiliary component (9) includes an arc frame (901), which is installed at the rear end of the brake shoe (706). A temporary storage tube (903) is fixedly installed at an equal distance and in an arc shape at one end of the arc frame (901) away from the brake shoe (706). The side auxiliary component (9) also includes a distribution tank (902) located at the rear end of the temporary storage tube (903). The end of the distribution tank (902) near the arc frame (901) is fixedly connected to the temporary storage tube (903).

8. An elevator brake failure monitoring device according to claim 7, characterized in that: The middle part of the distribution tank (902) away from the arc frame (901) is connected to the other end of the oil pipe (10). The interior of the temporary storage pipe (903) is movably sleeved with a second piston plate (904). The end of the second piston plate (904) away from the distribution tank (902) is fixedly connected with a second piston rod (905). The outer side of the second piston rod (905) is movably sleeved with a second return spring (906). The front and rear ends of the second return spring (906) are respectively connected to one end of the second piston plate (904) and one end of the temporary storage pipe (903).

9. The elevator brake fault monitoring device according to claim 8, characterized in that: The end of the second piston rod (905) away from the distribution tank (902) passes through one end of the temporary storage tube (903) and is fixedly connected to a spare brake pad (907). When the second return spring (906) is in the ultimate tension state, one end of the second piston plate (904) is in contact with one end of the inner cavity of the temporary storage tube (903), and one end of the spare brake pad (907) is in contact with one end of the brake shoe (706).

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