Centrifugal block throwing-out device in operation of speed governor

Abstract

The invention provides a centrifugal block throwing-out device in operation of a speed limiter, and belongs to the technical field of speed limiters, the centrifugal block throwing-out device comprises a base and a bottom plate, the bottom plate is connected with a limiting rod and a fixing shaft, a rope wheel is arranged in the bottom plate, the side wall of the rope wheel is fixedly connected with an extension plate, and the centrifugal block throwing-out device further comprises a brake assembly used for locking the rope wheel; the centrifugal triggering assembly completes braking of the rope wheel through centrifugal force; the manual triggering assembly is used for completing braking of the rope wheel through external limiting; the beneficial effects of the invention are that external force is applied to the driving lever to drive the blocking wheel to move towards one side of the connecting rod, then the centrifugal block is triggered through interaction force to complete work, so that manual inspection is completed, the structure is simple, the application range is improved, the device can be carried about, and the device can be conveniently operated under the condition that the device does not actually run at an overspeed. The trigger function of the speed governor is verified, and the safety and convenience of maintenance work are improved.

Description

Technical Field

[0001] The invention relates to the technical field of speed governors, and in particular to a centrifugal block throwing device during the operation of a speed governor. Background Art

[0002] The elevator speed limiter is one of the safety control components in the elevator safety protection system. When the elevator is in operation, if the car exceeds the speed limit or even falls due to any reason, and all other safety protection devices do not work, the speed limiter and the safety clamp will work in conjunction to stop the elevator car. The elevator is equipped with a speed limiter that makes the car stop urgently when the car is in an overspeed state. The usual elevator speed limiter includes a sheave component, a pawl component, a pressure claw component, two swing block components, a connecting rod component, a ratchet component, an adjustment spring component, etc. The sheave component is provided with two needle bearings, and the two swing block components are respectively fixed to the sheave component with standard parts after passing through the needle bearings through the pawl shaft and the swing block shaft.

[0003] The elevator speed limiter is used in the process of the elevator running downward. Once a fault occurs, such as the wire rope breaks and the elevator falls downward at high speed, the centrifugal weight of the speed limiter will be thrown out because the speed limiter rotates too fast, triggering the speed limiter and safety clamp protection. However, the inspector needs to supervise and inspect the traction drive passenger elevator. When the safety clamp is a progressive safety clamp, the elevator is required to load 125% of the rated load and descend at the rated speed. During the descent, the speed limiter needs to be manually triggered to verify whether the safety clamp can operate reliably, thereby verifying whether the speed limiter can work. However, the rotation of the rope wheel has a certain speed during operation, and direct manual operation is dangerous and inconvenient for inspection. How to invent a centrifugal weight throwing device during the operation of the speed limiter to solve these problems has become an urgent problem for technicians in this field. Summary of the invention

[0004] In order to make up for the above shortcomings, the present invention provides a centrifugal block ejection device during the operation of the speed limiter, aiming to solve the problem that the rope wheel rotates at a certain speed during operation, direct manual operation is dangerous and inconvenient for inspection.

[0005] The present invention is achieved in that: The present invention provides a centrifugal block ejection device in the operation of a speed limiter, comprising a base and a bottom plate, wherein the bottom plate is connected with a limit rod and a fixed shaft, a rope wheel is arranged inside the bottom plate, an extension plate is fixedly connected with the side wall of the rope wheel, the bottom plate is connected with a brake assembly, and the brake assembly is used to lock the rope wheel, and further comprises: A centrifugal trigger assembly, wherein the centrifugal trigger assembly is connected to the rope wheel, and the centrifugal trigger assembly brakes the rope wheel through centrifugal force; A manual trigger component, which is fixedly connected to the bottom plate, and the manual trigger component completes the braking of the rope wheel through external limiting.

[0006] Preferably, the base and the bottom plate are fixedly connected. The bottom plate is arranged in a "C" shape. The bottom plate is fixedly connected to the limiting rod and the fixed shaft respectively. The limiting rod is located below the fixed shaft. The fixed shaft is rotatably connected to the rope wheel. A reinforcing rod is fixedly connected to the side wall of the bottom plate.

[0007] Preferably, the centrifugal trigger component includes a connecting rod and a connecting plate. There are two connecting plates, and the two connecting plates are rotationally symmetric about the central axis of the rope wheel. The two ends of the connecting rod are respectively rotatably connected to the two connecting plates. A movable shaft is rotatably connected to the side wall of the connecting plate. One end of the movable shaft is fixedly connected to the side wall of the rope wheel. A centrifugal block is fixedly connected to the side of the connecting plate away from the connecting rod. An installation block is fixedly connected to the side wall of one of the connecting plates.

[0008] Preferably, the centrifugal trigger component further includes a transmission member, which consists of a threaded rod, an adjusting nut, a gasket and an adjusting spring. The gasket and the adjusting spring are both sleeved on the outer wall of the threaded rod. One end of the threaded rod penetrates through the side wall of the extension plate and is fixedly connected to the installation block. The two ends of the adjusting spring are respectively abutted against the gasket and the side wall of the extension plate. The adjusting nut is threadedly connected to the threaded rod.

[0009] Preferably, the centrifugal trigger component further includes a locking tongue, a ratchet wheel and a pawl. One end of the locking tongue is rotatably connected to the rope wheel. A first torsion spring is sleeved on the outer wall of one end of the locking tongue. The two ends of the first torsion spring are respectively clamped with the rope wheel and the locking tongue. A push rod is threadedly connected to the other end of the locking tongue. One end of the push rod abuts against the side wall of one of the connecting plates. A fixing nut is threadedly connected to the other end of the push rod. The ratchet wheel is rotatably connected to the fixed shaft. The ratchet wheel is located on one side of the rope wheel. A limiting groove hole matching with the limiting rod is formed in the side wall of the ratchet wheel. A docking rod is fixedly connected to the side wall of the ratchet wheel. The docking rod is rotatably connected to one side of the braking component. One end of the pawl is rotatably connected to the side wall of the rope wheel. A first telescopic spring is arranged at the other end of the pawl. The two ends of the first telescopic spring are respectively fixedly connected to the pawl and the rope wheel.

[0010] Preferably, the manual trigger assembly includes a vertical plate and a support plate, one side of the vertical plate is fixedly connected to a card plate, two card plates are provided, the vertical plate is arranged in an "L" shape, the vertical plate and the support plate are fixedly connected, one end of the support plate away from the vertical plate is rotatably connected to a fixed rod, the outer wall of the fixed rod is fixedly connected to a movable bracket, the upper end of the movable bracket is rotatably connected to a blocking wheel, the outer wall of the fixed rod is sleeved with two torsion springs, the two ends of the two torsion springs are respectively fixedly connected to the support plate and the side walls of the movable bracket, and one side of the movable bracket is fixedly connected to a lever.

[0011] Preferably, the manual trigger assembly also includes a side plate, a limit slide bar and a fixed plate, one end of the side plate slides between the limit slide bar, one end of the limit slide bar is fixedly connected to the side wall of the fixed plate, one end of the fixed plate is fixedly connected to the side wall of the vertical plate, the outer wall of the limit slide bar is sleeved with two telescopic springs, the two ends of the two telescopic springs are respectively fixedly connected to the fixed plate and the side walls of the side plate, the side wall of the side plate is fixedly connected with an inclined plate, one side of the inclined plate is provided with a scraper, the side wall of the scraper is fixedly connected with an oil storage box, and the oil storage box is connected to an oil absorbing cotton plate.

[0012] The beneficial effects of the present invention are: When the operator needs to inspect and test the speed limiter, the vertical plate can be clamped at the connection between the base and the bottom plate through the clamping plate, and the position of the blocking wheel can be appropriately adjusted to be located on one side of the connecting plate. When inspecting and testing, an external force can be applied to the lever. With the application of external force, one end of the movable bracket rotates around the supporting plate, thereby driving the blocking wheel to move toward the side of the connecting rod. The interaction force squeezes one end of the connecting plate, and the centrifugal block expands outwards through the action of the movable shaft, thereby triggering one end of the ratchet to move downward, thereby completing the manual inspection of the centrifugal trigger assembly. The structure is simple, the scope of application is improved, and the device can be carried around and can be used for Without causing the equipment to actually overspeed, the triggering function of the speed limiter is verified to improve the safety and convenience during inspection and testing. In addition, before manual triggering, the scraper can be brought into contact with the inner wall of the sheave, and the dirty oil inside can be scraped off during the rotation of the sheave to avoid idling or slipping of the sheave, ensuring that the speed limiter accurately triggers the safety clamp brake when the elevator is overspeeding, avoiding the elevator from falling out of control, reducing scratches on the sheave surface, reducing wear, extending service life, saving replacement costs, and properly applying the inner wall of the sheave through the oil-absorbing cotton board to avoid excessive drying and increasing the friction between the wire rope and the sheave, thereby ensuring the service life of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of a manual triggering assembly of a centrifugal mass throwing device in the operation of a speed limiter provided by an embodiment of the present invention; Figure 2 The invention provides a centrifugal block ejection device in the operation of a speed limiter. Figure 1 A magnified schematic diagram of the structure at B in the middle; Figure 3 It is a schematic diagram of a top view of the structure of a manual triggering assembly of a centrifugal mass throwing device in operation of a speed limiter provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of a half-section structure of a scraper of a centrifugal mass throwing device in operation of a speed governor provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of the overall front side structure of a centrifugal block ejection device in the operation of a speed limiter provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of the overall rear side structure of a centrifugal block ejection device in the operation of a speed governor provided by an embodiment of the present invention; Figure 7 It is a schematic structural diagram of a brake assembly and a centrifugal trigger assembly of a centrifugal block ejection device in operation of a speed limiter provided by an embodiment of the present invention; Figure 8 It is a schematic diagram of the ratchet structure of a centrifugal mass throwing device in the operation of a speed limiter provided by an embodiment of the present invention; Fig. 9 It is a schematic diagram of the transmission structure of a centrifugal block throwing device in the operation of a speed limiter provided by an embodiment of the present invention; Fig.10 It is a schematic diagram of a locking tongue structure of a centrifugal block ejection device in the operation of a speed limiter provided by an embodiment of the present invention; Fig.11 The invention provides a centrifugal block ejection device in the operation of a speed limiter. Fig.10 A schematic diagram of the enlarged structure in the middle.

[0015] In the figure: 1, base; 2, bottom plate; 3, brake assembly; 4, rope pulley; 41, extension plate; 5, centrifugal trigger assembly; 51, connecting rod; 52, connecting plate; 53, centrifugal block; 54, locking tongue; 541, torsion spring 1; 542, top rod; 543, fixing nut; 55, movable shaft; 56, mounting block; 57, transmission member; 571, threaded rod; 572, adjusting nut; 573, gasket; 574, adjusting spring; 58, ratchet; 581, limiting slot; 582, Docking rod; 59, ratchet; 591, telescopic spring one; 6, reinforcement rod; 7, manual trigger assembly; 71, vertical plate; 72, lever; 73, blocking wheel; 74, movable bracket; 75, support plate; 76, scraper; 761, inclined plate; 762, oil-absorbing cotton plate; 763, oil storage box; 77, side plate; 78, limit slide rod; 79, telescopic spring two; 710, clamping plate; 711, torsion spring two; 712, fixed rod; 713, fixed plate; 8, limit rod; 9, fixed shaft. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiment 1, refer to Figure 1-Figure 11 A centrifugal block ejection device in the operation of a speed limiter comprises a base 1 and a bottom plate 2, the bottom plate 2 is connected with a limit rod 8 and a fixed shaft 9, a rope wheel 4 is arranged inside the bottom plate 2, an extension plate 41 is fixedly connected to the side wall of the rope wheel 4, a brake assembly 3 is connected to the bottom plate 2, and the brake assembly 3 is used to lock the rope wheel 4, and also comprises: A centrifugal trigger assembly 5, which is connected to the rope wheel 4, and the centrifugal trigger assembly 5 brakes the rope wheel 4 through centrifugal force; The manual trigger component 7 is fixedly connected to the bottom plate 2, and the manual trigger component 7 completes the braking of the rope wheel 4 through the outer limit position.

[0018] Furthermore, the base 1 and the bottom plate 2 are fixedly connected. The bottom plate 2 is arranged in a "C" shape. The bottom plate 2 is fixedly connected to the limiting rod 8 and the fixed shaft 9 respectively. The limiting rod 8 is located below the fixed shaft 9. The fixed shaft 9 is rotatably connected to the rope wheel 4. A reinforcing rod 6 is fixedly connected to the side wall of the bottom plate 2. The centrifugal trigger assembly 5 includes a connecting rod 51 and a connecting plate 52. There are two connecting plates 52, and the two connecting plates 52 are rotationally symmetric about the central axis of the rope wheel 4. The two ends of the connecting rod 51 are respectively rotatably connected to the two connecting plates 52. A movable shaft 55 is rotatably connected to the side wall of the connecting plate 52. One end of the movable shaft 55 is fixedly connected to the side wall of the rope wheel 4. A centrifugal block 53 is fixedly connected to the side of the connecting plate 52 away from the connecting rod 51. An installation block 56 is fixedly connected to the side wall of one of the connecting plates 52. The centrifugal trigger assembly 5 further includes a transmission member 57, and the transmission member 57 consists of a threaded rod 571, an adjusting nut 572, a gasket 573 and an adjusting spring 574. Both the gasket 573 and the adjusting spring 574 are sleeved on the outer wall of the threaded rod 571. One end of the threaded rod 571 penetrates through and extends to the side wall of the extension plate 41 and is fixedly connected to the installation block 56. The two ends of the adjusting spring 574 are respectively abutted against the gasket 573 and the side wall of the extension plate 41. The adjusting nut 572 is threadedly connected to the threaded rod 571. The centrifugal trigger assembly 5 further includes a locking tongue 54, a ratchet wheel 58 and a pawl 59. One end of the locking tongue 54 is rotatably connected to the rope wheel 4. A torsion spring I 541 is sleeved on the outer wall of one end of the locking tongue 54. The two ends of the torsion spring I 541 are respectively clamped with the rope wheel 4 and the locking tongue 54. A push rod 542 is threadedly connected to the other end of the locking tongue 54. One end of the push rod 542 abuts against the side wall of one of the connecting plates 52. A fixing nut 543 is threadedly connected to the other end of the push rod 542. The ratchet wheel 58 is rotatably connected to the fixed shaft 9. The ratchet wheel 58 is located on one side of the rope wheel 4. A limiting groove hole 581 matching with the limiting rod 8 is formed in the side wall of the ratchet wheel 58. A docking rod 582 is fixedly connected to the side wall of the ratchet wheel 58. The docking rod 582 is rotatably connected to one side of the braking assembly 3. One end of the pawl 59 is rotatably connected to the side wall of the rope wheel 4. A telescopic spring I 591 is arranged at the other end of the pawl 59. The two ends of the telescopic spring I 591 are respectively fixedly connected to the pawl 59 and the rope wheel 4.

[0019] Braking the rotation speed of the rope wheel 4 by the centrifugal trigger assembly 5: Before using the speed limiter, fix the base 1 at the set position by bolts. During use, the steel wire rope will be sleeved in the groove of the rope wheel 4, and the pawl 59 is located above the ratchet wheel 58. During the normal rotation of the rope wheel 4, since the centrifugal force generated by the rotation is less than the elastic force of the adjusting spring 574, at this time, due to the elasticity of the adjusting spring 574, the two centrifugal blocks 53 are in a contracted state. However, when the elevator falls rapidly downward (such as Figure 1When the pulley 4 rotates clockwise as shown in the figure, the steel wire rope will quickly drive the pulley 4 to rotate. At this time, due to the increase in the rotation speed of the pulley 4, the centrifugal force generated by the pulley 4 also begins to increase. When the centrifugal force is greater than the elastic force of the adjusting spring 574, the two centrifugal blocks 53 will expand outward, so that the side wall of one of the connecting plates 52 squeezes the top rod 542, and the lifting of the top rod 542 drives one end of the locking tongue 54 to rotate, and causes the torsion spring 1 541 to undergo elastic deformation. When the locking tongue 54 rotates to a certain limit, it will lose the limit on one side of the pawl 59, and the telescopic spring 1 591 is in a stretched state in the initial state. Therefore, at this time, the elastic recovery of the telescopic spring 1 591 will drive one end of the pawl 59 to move downward, so that the pawl 59 One end of the ratchet 58 is engaged with the tooth groove on the ratchet 58, and then the ratchet 58 is driven to rotate in the same direction through the rotation of the rope wheel 4 and the action of the pawl 59. However, in this process, through the rotation connection between the docking rod 582 and the brake assembly 3, the brake assembly 3 presses the wire rope to prevent it from continuing to move downward, and at the same time stops the rotation of the rope wheel 4, thereby completing the speed limiting process. The brake assembly 3 is a prior art, so the specific working process is no longer described in detail. During the resetting process, the pawl 59 can be pushed upward to stretch the telescopic spring 591, thereby squeezing the lock tongue 54, so that the lock tongue 54 limits the pawl 59 again through the action of the torsion spring 541, thereby completing the resetting and waiting for the next use of the speed limiter.

[0020] Reference Figure 1-Figure 4 , further; the manual trigger assembly 7 includes a vertical plate 71 and a support plate 75, one side of the vertical plate 71 is fixedly connected to a card plate 710, two card plates 710 are provided, the vertical plate 71 is arranged in an "L" shape, the vertical plate 71 and the support plate 75 are fixedly connected, the end of the support plate 75 away from the vertical plate 71 is rotatably connected to a fixing rod 712, the outer wall of the fixing rod 712 is fixedly connected to a movable bracket 74, the upper end of the movable bracket 74 is rotatably connected to a blocking wheel 73, the outer wall of the fixing rod 712 is sleeved with a second torsion spring 711, the two ends of the second torsion spring 711 are respectively fixedly connected to the support plate 75 and the side wall of the movable bracket 74, and one side of the movable bracket 74 is fixedly connected to a lever 72.

[0021] Manual triggering of the speed limiter: When the operator needs to inspect the centrifugal block 53 in the speed limiter, the vertical plate 71 can be clamped at the connection between the base 1 and the bottom plate 2 through the clamping plate 710. Figure 1As shown, a threaded hole can be opened on the side wall of the card plate 710. After the card plate 710 is connected to the base 1, the card plate 710 can be fixed to the base 1 by passing the locking screw through the threaded hole to avoid the shaking of the manual trigger component 7 (in addition, other fixing parts can also be used for fastening, not limited to the above method), thereby increasing the safety of the operator during inspection. In this process, the position of the blocking wheel 73 can be appropriately adjusted to be located on one side of the connecting plate 52. When conducting inspection, an external force can be applied to the lever 72. As the external force is applied, one end of the movable bracket 74 rotates around the support plate 75, thereby driving the blocking wheel 73 to move toward the side of the connecting rod 51. When the pulley 4 is still in a rotating state, when the resisting wheel 73 contacts the mounting block 56 or the end of the connecting rod 51 away from the mounting block 56, the interaction force will squeeze one end of the connecting plate 52, and then the centrifugal block 53 will expand outward through the action of the movable shaft 55, thereby triggering one end of the ratchet 59 to move downward. The specific process has been described above and will not be repeated. When the detection is completed, the torsion spring 711 can be used to reset the lever 72 and the resisting wheel 73 to complete the manual inspection. The structure is simple, the scope of application is improved, and it can be carried with you. At the same time, the safety during the detection process is guaranteed. The resisting wheel 73 can be made of rubber. When the centrifugal block 53 is manually triggered by the rubber roller, due to the contact and action between the rubber roller and the relevant components, the possible deficiencies of the centrifugal trigger assembly 5 can be compensated to a certain extent. For example, in some special cases (such as when the elevator car is subjected to external impact and the speed is abnormal, but the centrifugal force trigger threshold is not reached), manual triggering can provide additional protection to ensure that the speed limiter can activate the protection device in time to avoid the occurrence of safety accidents. In addition, the use of the rubber roller can make the triggering process smoother and more controllable. Compared with the sudden triggering relying solely on the centrifugal force, the intervention of the rubber roller can make the action of the centrifugal block 53 more gradual, reducing the impact on the inside of the speed limiter. The impact of the mechanical structure is reduced, thereby improving the overall reliability and service life of the speed limiter. In addition, in the daily inspection and maintenance process of the speed limiter, the rubber roller can be used to simulate the overspeed situation to trigger the centrifugal block 53, which is convenient for technicians to check and test the performance of the speed limiter. This helps to timely discover potential problems of the speed limiter, such as whether the centrifugal block 53 is stuck, whether each spring is invalid, etc., to ensure that the speed limiter can work accurately during normal operation. The rubber roller triggering method can also be used as an off-line testing method to verify the triggering function of the speed limiter without causing the equipment to actually run at an overspeed, thereby improving the safety and convenience of maintenance work.

[0022] Example 2, refer to Figure 3 and Figure 4, further; the manual trigger assembly 7 also includes a side plate 77, a limiting slide bar 78 and a fixed plate 713, one end of the side plate 77 slides between the limiting slide bar 78, one end of the limiting slide bar 78 is fixedly connected to the side wall of the fixed plate 713, one end of the fixed plate 713 is fixedly connected to the side wall of the vertical plate 71, the outer wall of the limiting slide bar 78 is sleeved with a telescopic spring 2 79, the two ends of the telescopic spring 2 79 are respectively fixedly connected to the fixed plate 713 and the side wall of the side plate 77, the side wall of the side plate 77 is fixedly connected with an inclined plate 761, one side of the inclined plate 761 is provided with a scraper 76, the side wall of the scraper 76 is fixedly connected with an oil storage box 763, and the oil storage box 763 is connected to an oil absorption cotton plate 762.

[0023] The scraper 76 removes the dirty oil from the rope pulley 4: before the installation of the opposing plate 71, the side plate 77 can be pressed to make the side plate 77 slide on the limiting slide 78 and stretch the telescopic spring 2 79, so as to move the scraper 76 and the oil storage box 763 to the side of the limiting slide 78 away from the fixed plate 713. At this time, the scraper 76 and the oil storage box 763 deviate from the center line of the base 1. Then, in the process of fixing the vertical plate 71, the scraper 76 and the oil storage box 763 can pass between the inner wall of the bottom plate 2 and the wire rope, which will not affect the normal operation of the rope pulley 4. When the appropriate position is reached, the force applied to the side plate 77 can be removed. , the scraper 76 and the oil storage box 763 are reset through the elastic recovery of the telescopic spring 2 79. At this moment, the scraper 76 and the oil storage box 763 are located on one side of the rope wheel 4. After that, the vertical plate 71 is fixed by the clamping plate 710 so that the scraper 76 can contact the inner wall of the rope wheel 4. During the rotation of the rope wheel 4, the dirty oil inside can be scraped off. The speed limiter rope wheel 4 relies on the friction between it and the speed limiter wire rope to accurately monitor the running speed of the elevator. The dirty oil adheres to the surface of the rope wheel 4, which will greatly reduce the friction coefficient between the two, causing the rope wheel 4 to idle or slip. After scraping off the dirty oil, reliable friction can be restored. , ensuring that the speed limiter accurately triggers the safety clamp brake when the elevator exceeds the speed limiter ... The service life of the wire rope can be extended, and the replacement cost can be saved. In addition, the oil storage box 763 is filled with lubricating oil, and the oil-absorbing cotton plate 762 is in contact with the inner wall of the rope wheel 4. After the scraper 76 scrapes off the agglomerated dirty oil, the inner wall of the rope wheel 4 can be properly coated with the oil-absorbing cotton plate 762 to avoid excessive drying and increase the friction between the wire rope and the rope wheel 4, thereby ensuring the service life of the wire rope. This process can be properly carried out according to the situation. After the equipment is installed, the lever 72 can be moved after a period of scraping and lubrication. In addition, the lubricating oil inside the oil storage box 763 can be added according to the usage.

[0024] It should be noted that the specific model specifications need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A centrifugal block ejection device in the operation of a speed limiter, comprising a base (1) and a bottom plate (2), the bottom plate (2) being connected to a limit rod (8) and a fixed shaft (9), a rope wheel (4) being arranged inside the bottom plate (2), an extension plate (41) being fixedly connected to the side wall of the rope wheel (4), the bottom plate (2) being connected to a brake assembly (3), the brake assembly (3) being used to lock the rope wheel (4), characterized in that: It further includes: A centrifugal trigger assembly (5), the centrifugal trigger assembly (5) is connected to the rope pulley (4), and the centrifugal trigger assembly (5) brakes the rope pulley (4) by centrifugal force; A manual trigger assembly (7), the manual trigger assembly (7) is fixedly connected to the bottom plate (2), and the manual trigger assembly (7) brakes the rope pulley (4) through external limitation.

2. The centrifugal mass ejection device in the operation of the speed governor according to claim 1, characterized in that: The base (1) and the bottom plate (2) are fixedly connected. The bottom plate (2) is arranged in a "C" shape. The bottom plate (2) is fixedly connected to the limit rod (8) and the fixed shaft (9) respectively. The limit rod (8) is located below the fixed shaft (9). The fixed shaft (9) is rotatably connected to the rope pulley (4). A reinforcing rod (6) is fixedly connected to the side wall of the bottom plate (2).

3. The centrifugal mass ejection device in the operation of the speed governor according to claim 2, characterized in that: The centrifugal trigger assembly (5) includes a connecting rod (51) and a connecting plate (52). There are two connecting plates (52), and the two connecting plates (52) are rotationally symmetric about the central axis of the rope pulley (4). The two ends of the connecting rod (51) are respectively rotatably connected to the two connecting plates (52). A movable shaft (55) is rotatably connected to the side wall of the connecting plate (52). One end of the movable shaft (55) is fixedly connected to the side wall of the rope pulley (4). A centrifugal block (53) is fixedly connected to the side of the connecting plate (52) away from the connecting rod (51). An installation block (56) is fixedly connected to the side wall of one of the connecting plates (52).

4. The centrifugal mass ejection device in the operation of the speed governor according to claim 3, characterized in that: The centrifugal trigger assembly (5) further includes a transmission member (57). The transmission member (57) consists of a threaded rod (571), an adjusting nut (572), a gasket (573) and an adjusting spring (574). The gasket (573) and the adjusting spring (574) are both sleeved on the outer wall of the threaded rod (571). One end of the threaded rod (571) penetrates through the side wall of the extension plate (41) and is fixedly connected to the installation block (56). The two ends of the adjusting spring (574) are respectively abutted against the gasket (573) and the side wall of the extension plate (41). The adjusting nut (572) is threadedly connected to the threaded rod (571).

5. The centrifugal mass ejection device in the operation of the speed governor according to claim 4, characterized in that: The centrifugal trigger assembly (5) further comprises a locking tongue (54), a ratchet (58) and a pawl (59); one end of the locking tongue (54) is rotatably connected to the rope wheel (4); an outer wall of one end of the locking tongue (54) is sleeved with a torsion spring (541); two ends of the torsion spring (541) are respectively engaged with the rope wheel (4) and the locking tongue (54); the other end of the locking tongue (54) is threadedly connected to a push rod (542); one end of the push rod (542) is in contact with a side wall of one of the connecting plates (52); the other end of the push rod (542) is threadedly connected to a fixing nut (543); the ratchet (5 8) is rotatably connected to a fixed shaft (9), the ratchet (58) is located on one side of the rope wheel (4), the side wall of the ratchet (58) is provided with a limiting slot (581) that matches the limiting rod (8), the side wall of the ratchet (58) is fixedly connected with a docking rod (582), the docking rod (582) is rotatably connected to one side of the brake assembly (3), one end of the pawl (59) is rotatably connected to the side wall of the rope wheel (4), the other end of the pawl (59) is provided with a telescopic spring (591), and the two ends of the telescopic spring (591) are respectively fixedly connected to the pawl (59) and the rope wheel (4).

6. The centrifugal mass ejection device in the operation of the speed governor according to claim 1, characterized in that: The manual trigger assembly (7) comprises a vertical plate (71) and a support plate (75); one side of the vertical plate (71) is fixedly connected to a clamping plate (710); two clamping plates (710) are provided; the vertical plate (71) is arranged in an "L" shape; the vertical plate (71) and the support plate (75) are fixedly connected; one end of the support plate (75) away from the vertical plate (71) is rotatably connected to a fixing rod (712); an outer wall of the fixing rod (712) is fixedly connected to a movable bracket (74); an upper end of the movable bracket (74) is rotatably connected to a blocking wheel (73); a second torsion spring (711) is sleeved on the outer wall of the fixing rod (712); two ends of the second torsion spring (711) are respectively fixedly connected to the support plate (75) and the side wall of the movable bracket (74); and a shifting rod (72) is fixedly connected to one side of the movable bracket (74).

7. The centrifugal mass ejection device in the operation of the speed governor according to claim 1, characterized in that: The manual trigger assembly (7) further comprises a side plate (77), a limiting slide bar (78) and a fixed plate (713); one end of the side plate (77) and the limiting slide bar (78) are limitedly slidable between each other; one end of the limiting slide bar (78) is fixedly connected to a side wall of the fixed plate (713); one end of the fixed plate (713) is fixedly connected to a side wall of the vertical plate (71); an outer wall of the limiting slide bar (78) is sleeved with a second telescopic spring (79); two ends of the second telescopic spring (79) are respectively fixedly connected to the fixed plate (713) and the side wall of the side plate (77); an inclined plate (761) is fixedly connected to the side wall of the side plate (77); a scraper (76) is provided on one side of the inclined plate (761); an oil storage box (763) is fixedly connected to the side wall of the scraper (76); and the oil storage box (763) is connected to an oil absorbing cotton plate (762).

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