Progressive safety tongs suitable for large-mass high-speed elevator
By setting multiple sets of mounting cavities and detection devices on the wedge block, combined with a cleaning device, the problems of inaccurate wear detection and insufficient debris removal in high-mass, high-speed elevators are solved, achieving stable friction and safe braking of the wedge block.
Patent Information
- Application Number
- CN202511106928.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-11-04
AI Technical Summary
Existing progressive safety clamps are inaccurate in detecting wear in high-mass, high-speed elevators, resulting in a reduced coefficient of friction and a lack of effective debris removal devices, leading to decreased braking efficiency and safety hazards.
By setting multiple sets of mounting cavities on the wedge block, combined with detection and cleaning devices, wear detection and compensation are achieved. The induced current generated by frictional vibration is used to accurately judge wear, and the cleaning device removes guide rail debris to ensure stable friction.
It enables comprehensive monitoring and compensation of wear in multiple areas of the wedge block, improves braking efficiency, prevents debris accumulation, and ensures safe and reliable elevator operation.
Smart Images
Figure CN120887306A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of safety gear, and particularly relates to a progressive safety gear suitable for high-speed elevator with large mass. BACKGROUND
[0002] In the field of elevator operation safety guarantee, the safety gear is a key braking device in the case of elevator overspeed or out of control, and its performance stability is directly related to the safety of taking the elevator.
[0003] High-speed elevator generally refers to an elevator with a running speed greater than 2.5 m / s, which plays a vital role in vertical transportation in modern high-rise buildings. With the continuous rise of building height, the safety requirement of high-speed elevator is increasingly stringent. As a core braking device in the elevator safety system, the safety gear undertakes the key task of rapidly stopping the car and reliably clamping it on the guide rail in emergency situations such as elevator overspeed, out of control or suspension device rupture, and its performance is directly related to the life safety of the elevator passengers. A certain pressure is applied to the guide rail, and the stopping distance depends on the braking weight and the car speed at the time of safety valve activation, while the braking power basically remains unchanged after the safety gear is fully activated. The maintenance of the safety gear force is completed by restraining the elastic element that exerts the force, The progressive safety gear is an important type of safety gear, which is suitable for elevators with a speed greater than 0.63 m / s. Unlike other safety gears, the progressive safety gear applies a certain pressure to the guide rail during braking, and the stopping distance depends on the braking weight and the car speed at the time of safety valve activation, while the braking power basically remains unchanged after the safety gear is fully activated.
[0004] However, in the actual use scenario of high-speed elevator with large mass, the existing progressive safety gear exposes many problems. On the one hand, the wedge block of the safety gear and the elevator guide rail are repeatedly rubbed in the long-term frequent braking operation, which is prone to wear. However, the traditional safety gear lacks a precise and real-time wear detection mechanism, and it is difficult to sensitively detect the excessive wear of the local area, which may cause uneven force on the wedge block during braking, reduce the deceleration effect, and even bury serious safety hazards. On the other hand, after the wedge block is worn, the surface friction coefficient is reduced, and if it cannot be compensated in time, the braking efficiency will be directly weakened. In addition, the debris generated in the friction process will be adsorbed on the surface of the guide rail, further destroying the friction force between the wedge block and the guide rail, not only aggravating the wear degree, but also significantly reducing the reliability of braking. Moreover, the existing safety gear generally does not have an effective device for cleaning the debris, and cannot fundamentally solve this problem. SUMMARY
[0005] The present application aims to provide a progressive safety gear suitable for high-speed elevator with large mass to solve the problems in the prior art.
[0006] To achieve the above object, the present application provides the following technical solutions: By connecting the safety gear and the elevator guide rail, when the elevator guide rail needs the safety gear to work, the connecting plate is moved upward by the steel wire rope, the connecting plate moves to make the wedge blocks slide on the sliding plate, so that the distance between the wedge blocks is reduced, the wedge blocks clamp the elevator guide rail, the wedge blocks provide friction resistance to the elevator guide rail, so as to reduce the speed of the elevator, and in the process of reducing the speed, the detection device detects the wear degree of the wedge blocks, and after detection, the places with high wear degree of the wedge blocks are compensated to a certain extent, and the elevator guide rail is cleaned by the cleaning device to prevent the debris generated by the wedge blocks from being adsorbed on the elevator guide rail in the friction process, so as to reduce the friction force of the wedge blocks on the elevator guide rail.
[0007] Further, the wedge block is provided with a first installation cavity, a second installation cavity and a third installation cavity, the first installation cavity and the detection device, the second installation cavity and the detection device are connected, the third installation cavity and the detection device are connected, the detection device has a plurality of, the first installation cavity has a plurality of, the second installation cavity has a plurality of, and the third installation cavity has a plurality of.
[0008] By providing a plurality of first installation cavities, second installation cavities and third installation cavities, a plurality of detection devices are provided, so that the detection device can detect a plurality of places of the wedge block, so as to more comprehensively detect the wear degree of the wedge block.
[0009] Further, the wedge block is provided with a plurality of protrusions, and the plurality of protrusions are located above the plurality of first installation cavities.
[0010] By providing a plurality of protrusions on the wedge block, the friction coefficient of the wedge block is increased, so as to increase the deceleration effect of the wedge block.
[0011] Further, the detection device comprises a metal sheet, a detection coil, a reset spring, a detection magnet and a comparison device, the metal sheet is placed in the first installation cavity, the metal sheet and the first installation cavity are tightly connected, the metal sheet and the comparison device are connected, the detection coil, the reset spring and the detection magnet are placed in the second installation cavity, the detection coil and the second installation cavity are tightly connected, the reset spring is placed in the detection coil, the reset spring and the detection magnet are tightly connected, the end of the reset spring away from the detection magnet is tightly connected with the second installation cavity, the end of the detection magnet away from the reset spring is tightly connected with the second installation cavity, and the detection coil and the comparison device are electrically connected.
[0012] The metal sheet is made of a material with low thermal collision coefficient. At the beginning, the detection devices are connected to each other. When the wedge blocks slow down the elevator guide rails, the wedge blocks vibrate due to the friction between the wedge blocks and the elevator guide rails. When the wedge blocks are worn, the wall thickness of the higher position of the wear part is thinner, the frequency of the vibration of the protrusion at the higher position of the wear part is slower, and the amplitude is larger. The vibration of the protrusion at the higher position of the wear part to the second installation cavity below is more obvious, the reset spring is compressed and stretched due to the vibration, the detection magnet moves due to the compression and stretching of the reset spring, the magnetic flux in the detection coil changes due to the movement of the detection magnet, the induced current is generated due to the change of the magnetic flux of the detection magnet, the wear degree of the position is detected by the size of the induced current, the wear degrees of the protrusions at adjacent positions are compared by the comparison device, and then the metal sheet below the protrusion at the position with higher wear degree is powered on by the comparison device, so that the metal sheet is heated and collides to lift the protrusion, thereby increasing the deceleration effect of the protrusion.
[0013] Further, the comparison device is arranged in the third installation cavity. The comparison device includes electromagnets, fixed blocks, switch springs, fixed columns, connecting blocks, connecting switches, and control circuits. The electromagnets are two, and the fixed blocks are two. The fixed blocks are provided with switch springs, and the switch springs are tightly connected with the fixed blocks. The detection coil is electrically connected with the control circuit, and the control circuit is electrically connected with the electromagnets. The two electromagnets are tightly connected with the third installation cavity, the fixed blocks are tightly connected with the third installation cavity, the fixed columns are tightly connected with the third installation cavity, the connecting blocks are tightly connected with the fixed columns, and the connecting blocks are tightly connected with the connecting switches.
[0014] The connecting switch can be attracted by a magnetic field. The third installation cavity provides a mounting basis for the comparison device. When the comparison device needs to detect the wear degrees of the protrusions at adjacent positions, the detection coil below the adjacent protrusions is connected with the control circuit, and then different electromagnets are powered by the control circuit to generate magnetic fields. The connecting switch is rotated around the fixed column to make the connecting switch contact the switch spring, so that the metal sheet below the protrusion at the position with higher wear degree is powered on to expand the metal sheet. The expanded metal sheet compensates for the thickness consumed by wear at the protrusion position, increases the friction contact area of the protrusion with the elevator guide rail, and improves the deceleration effect of the protrusion on the elevator.
[0015] Further, the connecting switch is triangular.
[0016] By setting the connecting switch to be triangular, the horizontal force of the switch spring on the connecting switch enables the connecting switch to reset when the electromagnet is not powered on.
[0017] Further, the cleaning device comprises a rotating roller, a connecting rod, a mounting block, a synchronous belt, an electromagnetic coil, a cleaning magnet, a mounting base, a fan and a rotating rod, the rotating roller is rotatably connected with the connecting rod, the mounting block is provided with a mounting groove and a connecting hole, the connecting rod is arranged in the mounting groove, the connecting rod and the mounting groove are slidably connected, the connecting rod is provided with a connecting rope, the connecting rope is tightly connected through the connecting hole and a limiting block, the synchronous belt is threadedly connected with the rotating roller, the synchronous belt is threadedly connected with the rotating rod, the rotating rod is tightly connected with the electromagnetic coil, the mounting base is tightly connected with the mounting frame, the cleaning magnet is tightly connected with the mounting base, and the electromagnetic coil is connected with the fan.
[0018] The mounting frame is also provided with a power supply, when the electromagnetic coil cannot generate enough current to drive the fan, the power supply is used to supplement the power supply, and the mounting block and the mounting base are used as the main installation base for the installation and positioning of other components, when it is necessary to slow down the elevator, the limiting block moves upward, the connecting rod is driven to slide in the mounting groove through the upward movement of the limiting block, the rotating roller and the elevator guide rail are in contact through the sliding of the connecting rod, the rotating roller and the guide rail interact during the movement of the elevator, so that the rotating roller rotates, the synchronous belt rotates through the rotation of the rotating roller, the rotating rod rotates through the rotation of the synchronous belt, and the electromagnetic coil rotates through the rotation of the rotating rod, the electromagnetic coil cuts the magnetic induction lines of the cleaning magnet through the rotation of the electromagnetic coil, so that an induced current is generated, the fan is powered through the induced current, and the energy-saving and environment-friendly effect is achieved.
[0019] Further, the fan outlet is inclined upward.
[0020] By setting the fan outlet to be inclined upward, the debris blown by the fan will not fall into the mounting frame, so that the other components in the mounting frame are not jammed.
[0021] Compared with the prior art, the beneficial effects of the present application are: 1. By arranging a plurality of first, second and third installation cavities on the wedge-shaped block, comprehensive monitoring of the wear of the wedge-shaped block at multiple positions is realized by cooperating with the detection device. The detection device uses the extension and contraction of the reset spring caused by friction vibration and the movement of the detection magnet to generate an induced current through the change of the magnetic flux of the detection coil, so as to accurately judge the wear degree at different positions.
[0022] 2. The comparison device is used to compare and analyze the wear degree at different positions, when it is detected that the wear in a certain area is serious, the control circuit is used to drive the electromagnet to generate a magnetic field, the connecting switch is brought into contact with the corresponding switch spring sheet, and the metal sheet below the area is powered. The metal sheet expands after being heated to lift the protrusion of the wedge-shaped block, compensates for the thickness consumed by wear, increases the friction contact area, ensures that the wedge-shaped block can still maintain stable deceleration effect in long-term use, and avoids brake failure caused by local excessive wear.
[0023] 3, the cleaning device is connected with the guide rail through the limiting block linkage connecting rod, the rotating roller is in contact with the guide rail, the rotating roller is rotated during the operation of the elevator, the synchronous belt and the rotating rod are rotated, and then the electromagnetic coil cuts the magnetic induction line of the cleaning magnet to generate an induced current to power the fan. The inclined upward design of the fan outlet can effectively blow off the friction debris on the surface of the guide rail, prevent the accumulation of debris and reduce the friction force of the wedge-shaped block, and the induced current power supply mode is energy-saving and environmentally friendly, which reduces the additional energy consumption. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a schematic view of the overall structure of the present application; Figure 2 It is a partial A enlarged view of Figure 1 Figure 3 It is a schematic view of the connecting plate structure of the present application; Figure 4 It is a schematic view of the wedge-shaped block structure of the present application; Figure 5 It is a partial B enlarged view of Figure 4 Figure 6 It is a schematic view of the third installation cavity structure of the present application; Figure 7 It is a partial C enlarged view of Figure 6 Figure 8 It is a schematic view of the cleaning device structure of the present application; Figure 9 It is a partial D enlarged view of Figure 8
[0025] In the figure: 1, mounting frame; 2, steel wire rope; 21, limiting block; 3, sliding plate; 4, connecting plate; 5, wedge-shaped block; 51, first installation cavity; 52, second installation cavity; 53, third installation cavity; 6, detection device; 61, metal sheet; 62, detection coil; 63, return spring; 64, detection magnet; 65, comparison device; 651, electromagnet; 652, fixed block; 653, switch spring sheet; 654, fixed column; 655, connecting block; 656, connecting switch; 7, cleaning device; 71, rotating roller; 72, connecting rod; 73, mounting block; 731, mounting groove; 732, connecting hole; 74, synchronous belt; 75, electromagnetic coil; 76, cleaning magnet; 77, mounting base; 78, fan; 79, rotating rod. DETAILED DESCRIPTION
[0026] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.
[0027] Embodiment: As shown in the figure, the present application provides a progressive safety pawl technical solution suitable for large mass high-speed elevators, which comprises a mounting frame 1, a steel wire rope 2, a sliding plate 3, a connecting plate 4, a wedge block 5, a detection device 6 and a cleaning device 7. The mounting frame 1 and the sliding plate 3 are tightly connected, the mounting frame 1 and the connecting plate 4 are tightly connected, the steel wire rope 2 passes through the mounting frame 1 and the connecting plate 4 and is tightly connected, the connecting plate 4 and the wedge block 5 are tightly connected, the wedge block 5 and the sliding plate 3 are slidingly connected, the steel wire rope 2 is provided with a limiting block 21, the cleaning device 7 and the mounting frame 1 are tightly connected, and the detection device 6 and the wedge block 5 are connected. Figures 1-9
[0028] When the safety pawl and the elevator guide rail are connected, when the elevator guide rail needs the safety pawl to work, the steel wire rope 2 moves upward to drive the connecting plate 4 to move, the connecting plate 4 moves to make the wedge block 5 slide on the sliding plate 3, so that the distance between the wedge blocks 5 is reduced, the wedge blocks 5 clamp the elevator guide rail, and the wedge blocks 5 provide friction resistance to the elevator guide rail, thereby reducing the speed of the elevator. In the process of reducing the speed, the detection device 6 detects the wear degree of the wedge block 5, after the detection is completed, a certain degree of compensation is made to the place where the wedge block 5 is worn more seriously, and the cleaning device 7 cleans the elevator guide rail to prevent the debris generated by the wedge block 5 from being adsorbed on the elevator guide rail in the friction process, thereby reducing the friction force of the wedge block 5 on the elevator guide rail.
[0029] As shown in the figure, the wedge block 5 is provided with a first mounting cavity 51, a second mounting cavity 52 and a third mounting cavity 53, the first mounting cavity 51 and the detection device 6, the second mounting cavity 52 and the detection device 6 are connected, the third mounting cavity 53 and the detection device 6 are connected, the detection device 6 has a plurality of, the first mounting cavity 51 has a plurality of, the second mounting cavity 52 has a plurality of, and the third mounting cavity 53 has a plurality of. Figures 4-5 The plurality of first mounting cavities 51, second mounting cavities 52 and third mounting cavities 53 provide installation bases for the plurality of detection devices 6, so that the detection device 6 can detect the wedge block 5 in multiple places, thereby more comprehensively detecting the wear degree of the wedge block 5.
[0030] As shown in the figure,
[0031] , Figure 1 , Figure 2 and Figure 4 As shown, the wedge block 5 has several protrusions, which are located above several first mounting cavities 51.
[0032] By providing several protrusions on the wedge block 5, the coefficient of friction of the wedge block 5 is increased, thereby increasing the deceleration effect of the wedge block 5.
[0033] like Figures 4-7 As shown, the detection device 6 includes a metal sheet 61, a detection coil 62, a reset spring 63, a detection magnet 64, and a comparison device 65. The metal sheet 61 is placed in the first mounting cavity 51 and is fastened to the first mounting cavity 51. The metal sheet 61 is connected to the comparison device 65. The detection coil 62, the reset spring 63, and the detection magnet 64 are placed in the second mounting cavity 52 and are fastened to the second mounting cavity 52. The reset spring 63 is placed in the detection coil 62 and is fastened to the detection magnet 64. The end of the reset spring 63 away from the detection magnet 64 is fastened to the second mounting cavity 52. The end of the detection magnet 64 away from the reset spring 63 is fastened to the second mounting cavity 52. The detection coil 62 and the comparison device 65 are electrically connected.
[0034] The metal sheet 61 is made of a material with a low thermal collision coefficient. Initially, the detection devices 6 are interconnected. When the wedge block 5 decelerates the elevator guide rail, the friction between the wedge block 5 and the elevator guide rail causes the wedge block 5 to vibrate. When wear occurs on the wedge block 5, the wall thickness is thinner at higher wear locations, and the vibration frequency of the protrusions at higher wear locations is slower and the amplitude is larger. This makes the vibration effect of the protrusions at higher wear locations on the second mounting cavity 52 below that location more obvious. The vibration of the cavity wall of the second mounting cavity 52 causes the return spring 63 to generate... Compression and extension of the return spring 63 cause the detection magnet 64 to move, which in turn causes a change in the magnetic flux within the detection coil 62. This change in magnetic flux generates an induced current, which is used to detect the degree of wear at that location. The wear degree of the protrusions at adjacent locations is compared using a comparison device 65. Then, the comparison device 65 energizes the metal sheet 61 below the protrusion at the location with higher wear, causing the metal sheet 61 to be heated and impacted, thus lifting the protrusion and increasing its deceleration effect.
[0035] like Figures 4-7As shown, the comparison device 65 is placed in the third mounting cavity 53, the comparison device 65 comprises two electromagnets 651, two fixed blocks 652, switch elastic sheets 653, fixed columns 654, connecting blocks 655, connecting switches 656 and control circuits, the fixed blocks 652 are provided with the switch elastic sheets 653, the switch elastic sheets 653 are tightly connected with the fixed blocks 652, the detection coil 62 is electrically connected with the control circuit, the control circuit is electrically connected with the electromagnets 651, the two electromagnets 651 are tightly connected with the third mounting cavity 53, the fixed blocks 652 are tightly connected with the third mounting cavity 53, the fixed columns 654 are tightly connected with the third mounting cavity 53, the connecting blocks 655 are tightly connected with the fixed columns 654, and the connecting blocks 655 are tightly connected with the connecting switches 656.
[0036] The connecting switch 656 can be attracted by the magnetic field, the third mounting cavity 53 provides a mounting basis for the comparison device 65, when it is needed to compare the wear degree of the protrusions in the adjacent positions, the detection coil 62 and the control circuit are connected, the detection coil 62 under the adjacent protrusions is connected with the control circuit, then the different electromagnets 651 are powered through the control circuit, the magnetic field generated by the electromagnets 651 acts on the connecting switch 656, so that the connecting switch 656 rotates around the fixed column 654, the connecting switch 656 and the switch elastic sheet 653 are in contact through the rotation of the connecting switch 656, the metal sheet 61 under the protrusion in the position with larger wear degree is powered, so that the metal sheet 61 expands, the expansion of the metal sheet 61 compensates the thickness consumed by the wear of the protrusion position, increases the friction contact area of the protrusion of the elevator guide rail, and improves the deceleration effect of the protrusion on the elevator.
[0037] As shown in Figure 6 and Figure 7 , the connecting switch 656 is triangular.
[0038] By setting the connecting switch 656 as a triangle, the horizontal force of the switch elastic sheet 653 on the connecting switch 656 makes the connecting switch 656 reset when the electromagnet 651 is not powered.
[0039] As shown in Figure 1 , Figure 2 , Figure 8 and Figure 9As shown, the cleaning device 7 includes a rotating roller 71, a connecting rod 72, a mounting block 73, a timing belt 74, an electromagnetic coil 75, a cleaning magnet 76, a mounting base 77, a fan 78, and a rotating rod 79. The rotating roller 71 and the connecting rod 72 are rotatably connected. The mounting block 73 is provided with a mounting groove 731 and a connecting hole 732. The connecting rod 72 is placed in the mounting groove 731 and is slidably connected to the mounting groove 731. The connecting rod 72 is provided with a connecting rope, which passes through the connecting hole 732 and is fastened to the limiting block 21. The timing belt 74 is threadedly connected to the rotating roller 71 and the rotating rod 79. The rotating rod 79 is fastened to the electromagnetic coil 75. The mounting base 77 is fastened to the mounting frame 1. The cleaning magnet 76 is fastened to the mounting base 77. The electromagnetic coil 75 and the fan 78 are connected by wires.
[0040] The mounting bracket 1 is also equipped with a power supply. When the current generated by the electromagnetic coil 75 is insufficient to drive the fan 78, the power supply is used to supplement the power. The mounting block 73 and the mounting base 77 serve as the main mounting base for the installation and positioning of other components. When it is necessary to decelerate the elevator, the limit block 21 moves upward. The upward movement of the limit block 21 drives the connecting rod 72 to slide in the mounting groove 731. The sliding of the connecting rod 72 causes the rotating roller 71 to contact the elevator guide rail. During the elevator movement, the rotating roller 71 interacts with the guide rail, causing the rotating roller 71 to rotate. The rotation of the rotating roller 71 drives the rotation of the synchronous belt 74, which in turn drives the rotating rod 79 to rotate. The rotation of the rotating rod 79 causes the electromagnetic coil 75 to rotate. The rotation of the electromagnetic coil 75 causes the electromagnetic coil 75 to cut the magnetic field lines of the cleaning magnet 76, thereby generating an induced current. The generated induced current supplies power to the fan 78, thus achieving the effect of energy saving and environmental protection.
[0041] like Figure 2 As shown, the air outlet of fan 78 is angled upwards.
[0042] By setting the air outlet of the fan 78 to be angled upwards, the debris blown off by the fan 78 will not fall into the mounting bracket 1, thereby causing other components in the mounting bracket 1 to jam.
[0043] The working principle of the present application is as follows: after the safety gear and the elevator guide rail are connected, when the elevator guide rail needs the safety gear to work, the upward movement of the steel wire rope 2 drives the connecting plate 4 to move, the movement of the connecting plate 4 makes the wedge-shaped blocks 5 slide on the sliding plate 3, so that the distance between the wedge-shaped blocks 5 is reduced, the wedge-shaped blocks 5 clamp the elevator guide rail, the wedge-shaped blocks 5 provide friction resistance to the elevator guide rail, so as to reduce the speed of the elevator, when the wedge-shaped blocks 5 play a role in reducing the speed of the elevator guide rail, the wedge-shaped blocks 5 vibrate due to the friction between the wedge-shaped blocks 5 and the elevator guide rail, when the wedge-shaped blocks 5 are worn, the wall thickness of the higher position of the wear part is thinner, the frequency of the vibration of the protrusion at the higher position of the wear part is slower, and the amplitude is larger, so that the vibration effect of the protrusion at the higher position of the wear part on the second installation cavity 52 below is more obvious, the cavity wall of the second installation cavity 52 vibrates, the compression and elongation of the return spring 63 are generated by the vibration, the detection magnet 64 moves by the compression and elongation of the return spring 63, the magnetic flux in the detection coil 62 changes by the movement of the detection magnet 64, the induced current is generated by the change of the magnetic flux of the detection magnet 64, the wear degree of the position is detected by the size of the induced current, the wear degrees of the protrusions at adjacent positions are compared by the comparison device 65, the detection coil 62 and the control circuit are connected, the detection coil 62 below the adjacent protrusions and the control circuit are connected, then different electromagnets 651 are powered by the control circuit, so that different electromagnets 651 generate magnetic fields, the connecting switch 656 is subjected to a force by the magnetic field generated by the electromagnet 651, so that the connecting switch 656 rotates around the fixed column 654, the connecting switch 656 and the switch spring 653 are in contact by the rotation of the connecting switch 656, the metal sheet 61 below the protrusion at the position with larger wear degree is electrified, the metal sheet 61 expands, the protrusion is lifted, so that the deceleration effect of the protrusion is increased, at the same time, the elevator guide rail is cleaned by the cleaning device 7, so that the debris generated by the wedge-shaped blocks 5 during the friction process is prevented from being adsorbed on the elevator guide rail, so as to reduce the friction force of the wedge-shaped blocks 5 on the elevator guide rail.
[0044] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the present application being defined by the appended claims rather than the above description, and it is intended to embrace all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to which they belong.
Claims
1. A progressive safety gear suitable for use in a high mass high speed elevator, characterized by: The safety clamp comprises a mounting frame (1), a steel wire rope (2), a sliding plate (3), a connecting plate (4), a wedge block (5), a detection device (6) and a cleaning device (7), the mounting frame (1) and the sliding plate (3) are fixedly connected, the mounting frame (1) and the connecting plate (4) are fixedly connected, the steel wire rope (2) passes through the mounting frame (1) and the connecting plate (4) and is fixedly connected, the connecting plate (4) and the wedge block (5) are fixedly connected, the wedge block (5) and the sliding plate (3) are slidingly connected, the steel wire rope (2) is provided with a limiting block (21), the cleaning device (7) and the mounting frame (1) are fixedly connected, and the detection device (6) is connected with the wedge block (5).
2. A progressive safety gear for high speed elevator with large mass according to claim 1 characterized in that: The wedge block (5) is provided with a first mounting cavity (51), a second mounting cavity (52) and a third mounting cavity (53), the first mounting cavity (51) is connected with the detection device (6), the second mounting cavity (52) is connected with the detection device (6), the third mounting cavity (53) is connected with the detection device (6), the detection device (6) has a plurality of first mounting cavities (51), a plurality of second mounting cavities (52) and a plurality of third mounting cavities (53).
3. A progressive safety gear for high speed elevators of large mass according to claim 2, characterized in that: The wedge block (5) is provided with a plurality of protrusions, and the plurality of protrusions are respectively located above the plurality of first mounting cavities (51).
4. A progressive safety gear for high speed elevators of large mass according to claim 3, characterized in that: The detection device (6) comprises a metal sheet (61), a detection coil (62), a reset spring (63), a detection magnet (64) and a comparison device (65), the metal sheet (61) is arranged in the first mounting cavity (51), the metal sheet (61) and the first mounting cavity (51) are fixedly connected, the metal sheet (61) is connected with the comparison device (65), the detection coil (62), the reset spring (63) and the detection magnet (64) are arranged in the second mounting cavity (52), the detection coil (62) and the second mounting cavity (52) are fixedly connected, the reset spring (63) is arranged in the detection coil (62), the reset spring (63) and the detection magnet (64) are fixedly connected, one end of the reset spring (63) away from the detection magnet (64) is fixedly connected with the second mounting cavity (52), and one end of the detection magnet (64) away from the reset spring (63) is fixedly connected with the second mounting cavity (52). The detection coil (62) is electrically connected with the comparison device (65).
5. A progressive safety gear for use with a high mass high speed elevator as defined in claim 4 wherein: The comparison device (65) is arranged in the third mounting cavity (53), the comparison device (65) includes electromagnet (651), fixed block (652), switch elastic sheet (653), fixed column (654), connecting block (655), connecting switch (656) and control circuit, the electromagnet (651) has two, the fixed block (652) has two, the fixed block (652) is equipped with switch elastic sheet (653), the switch elastic sheet (653) and fixed block (652) fastening connection, the detection coil (62) and control circuit electric connection, the control circuit and electromagnet (651) electric connection, two the electromagnet (651) and third mounting cavity (53) fastening connection, the fixed block (652) and third mounting cavity (53) fastening connection, the fixed column (654) and third mounting cavity (53) fastening connection, the connecting block (655) and fixed column (654) fastening connection, the connecting block (655) and connecting switch (656) fastening connection.
6. A progressive safety gear for high speed elevators of large mass according to claim 5, characterized in that: The connecting switch (656) is triangular.
7. A progressive safety gear for high speed elevator with large mass according to claim 1 characterized in that: The cleaning device (7) includes rotating roller (71), connecting rod (72), mounting block (73), synchronous belt (74), electromagnetic coil (75), cleaning magnet (76), mounting base (77), fan (78) and rotating rod (79), the rotating roller (71) and connecting rod (72) rotationally connected, the mounting block (73) is equipped with mounting groove (731) and connecting hole (732), the connecting rod (72) is arranged in the mounting groove (731), the connecting rod (72) and mounting groove (731) are slidably connected, the connecting rod (72) is equipped with connecting rope, the connecting rope passes through connecting hole (732) and limiting block (21) fastening connection, the synchronous belt (74) and rotating roller (71) are threadedly connected, the synchronous belt (74) and rotating rod (79) are threadedly connected, the rotating rod (79) and electromagnetic coil (75) fastening connection, the mounting base (77) and mounting frame (1) fastening connection, the cleaning magnet (76) and mounting base (77) fastening connection, the electromagnetic coil (75) and fan (78) wire connection.
8. A progressive safety gear for high speed elevators of large mass according to claim 7, characterized in that: The fan (78) outlet is inclined upward.