Elevator with emergency brake mechanism

Abstract

The present invention discloses an elevator with an emergency brake mechanism, including an elevator box and a brake mechanism, wherein the brake mechanism includes a long rail, a support shell, a transmission wheel, a centrifugal slider, a sleeve wheel, a locking gear, a locking rack and a brake block; a first spring and a slide groove are provided on the transmission wheel, the centrifugal slider is slidably connected to the transmission wheel, the first spring connects the centrifugal slider and the transmission wheel, and an inner tooth is provided on the inner side wall of the sleeve wheel; the sleeve wheel is connected to the locking gear, the locking rack is slidably connected to the support shell, and the locking gear and the locking rack are adapted, one end of the brake block contacts the long rail, and the locking rack contacts the brake block. The present invention provides an elevator with an emergency brake mechanism, which can play an emergency braking role in the process of the elevator stalling and accelerating to descend, thereby increasing the reliability of the elevator; and the entire brake mechanism is realized by a pure mechanical structure, which can also play an emergency braking role in special circumstances such as power failure or controller failure of the elevator, thereby further ensuring the safety of the elevator.

Description

Technical Field

[0001] The invention relates to the field of elevators, in particular to an elevator with an emergency braking mechanism. Background Art

[0002] As a means of vertical transportation, elevators play an irreplaceable role in our daily life and work. As a mechatronic product, its own structure is very complex, and its safety factor is much greater than other electrical products. However, even so, the elevator equipment itself still has many safety issues. Existing elevators generally have backup emergency braking systems, but the emergency braking systems of existing elevators are generally electrically controlled. In extreme cases: such as when the elevator is powered off, the backup power fails, and the controller is damaged, the emergency braking system cannot be guaranteed to work properly, and there are still certain safety hazards. Therefore, it is necessary to design an elevator with an emergency braking mechanism. The emergency braking mechanism can play an emergency braking role during the elevator stall acceleration descent process, thereby increasing the reliability of the elevator; and the entire braking mechanism is realized through a purely mechanical structure, which can also play an emergency braking role in special circumstances such as elevator power outages or controller failures, further ensuring the safety of the elevator.

[0003] Chinese patent application publication number CN206069138U, published on April 5, 2017, entitled "An emergency brake elevator", discloses that the utility model discloses an emergency brake elevator, including: a counterweight device, a traction machine, a car, a pulley block, a wire rope, an emergency brake device and an emergency brake button, wherein the counterweight device is connected to the car through the traction machine, the pulley block and the wire rope, the emergency brake device includes a signal transmission mechanism and a brake mechanism, the signal transmission mechanism transmits an emergency signal, the brake mechanism is a brake structure arranged on all pulleys of the pulley block, and the emergency brake button is arranged on the door of the car. With the utility model, when an emergency occurs, after pressing the emergency brake button, the signal transmission mechanism transmits the emergency signal to the control system of the traction wheel, stops the traction action of the traction machine, and on the other hand, the clamp structure of the brake mechanism performs a tightening action, rubs the wire rope, stops the wire rope from sliding, and thus forces the car to stop moving up and down. However, the emergency brake of this elevator requires human control, which may lead to human error or lack of operation skills. Summary of the invention

[0004] In order to overcome the problem in the prior art that the emergency brake system of an elevator may fail under extreme circumstances, the present invention provides an elevator with an emergency brake mechanism, which can play an emergency braking role during the elevator stalling and accelerating descent, thereby increasing the reliability of the elevator; and the entire brake mechanism is implemented by a purely mechanical structure, which can also play an emergency braking role in special circumstances such as elevator power outage or controller failure, thereby further ensuring the safety of the elevator.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An elevator with an emergency brake mechanism comprises an elevator body and a brake mechanism, wherein the brake mechanism comprises a long rail, a support shell, a transmission wheel, a centrifugal slider, a sleeve wheel, a locking gear, a locking rack and a brake block, wherein the transmission wheel, the sleeve wheel and the locking gear are respectively rotatably connected with the support shell; the transmission wheel contacts the long rail, the transmission wheel is provided with a first spring and a slide groove arranged along the diameter direction of the transmission wheel, the centrifugal slider is slidably connected with the transmission wheel through the slide groove, one end of the first spring is connected with the centrifugal slider, the other end of the first spring is connected with the transmission wheel, the sleeve wheel is sleeved on the outer side of the transmission wheel, and an inner side wall of the sleeve wheel is provided with an inner tooth adapted to the centrifugal slider; the sleeve wheel is connected with the locking gear, the locking rack is slidably connected with the support shell, and the locking gear and the locking rack are adapted, and one end of the locking rack is provided with a first inclined surface; the brake block is slidably connected with the support shell, one end of the brake block is provided with a second inclined surface, the other end of the brake block contacts the long rail, and the first inclined surface contacts the second inclined surface.

[0007] In the above technical solution, the sliding direction of the locking rack is perpendicular to the sliding direction of the brake block, and the long rail is fixed to the inner wall of the elevator shaft. When the elevator stalls and falls rapidly, the transmission wheel rotates rapidly, driving the centrifugal slider to rotate. The centrifugal slider overcomes the elastic force of the first spring under the action of centrifugal force and extends outward. The centrifugal slider contacts the inner teeth on the sleeve wheel, driving the sleeve wheel to rotate. The sleeve wheel further drives the locking gear to rotate. The locking gear drives the locking rack to slide. The first inclined surface on the locking rack squeezes the second inclined surface, so that the brake block squeezes the long rail to brake the elevator. When the elevator is lifting normally, the transmission wheel rotates slowly, and the centrifugal force of the centrifugal slider cannot overcome the elastic force of the first spring, and the centrifugal slider will not drive the sleeve wheel to rotate. The above technical solution can play an emergency braking role in the process of the elevator stalling and accelerating to descend, thereby increasing the reliability of the elevator; and the entire braking mechanism is realized by a purely mechanical structure, which can also play an emergency braking role in special circumstances such as power failure or controller failure of the elevator, thereby further ensuring the safety of the elevator. A fifth spring is provided on the brake block, and the brake block is retracted when the locking rack does not squeeze the brake block.

[0008] Preferably, there are two brake mechanisms, which are arranged on opposite sides of the bottom of the elevator casing.

[0009] Preferably, the sleeve wheel is connected to the locking gear via a gear reduction mechanism. The structure can play a role in reducing speed and increasing torque.

[0010] Preferably, a friction plate is provided on the side of the brake block close to the long rail. The structure can achieve a better braking effect.

[0011] Preferably, the brake mechanism further comprises a pawl and a second spring, a ratchet is provided on the locking gear, one end of the second spring is connected to the support shell, the other end of the second spring is connected to the pawl, one end of the pawl is rotatably connected to the support shell, and the other end of the pawl is in contact with the ratchet. The structure can prevent the locking gear from reversing and ensure the reliability of emergency braking.

[0012] Preferably, the brake mechanism further comprises a pawl and a second spring, a ratchet is provided on the sleeve wheel, one end of the second spring is connected to the support shell, the other end of the second spring is connected to the pawl, one end of the pawl is rotatably connected to the support shell, and the other end of the pawl is in contact with the ratchet. The structure can prevent the locking gear from reversing and ensure the reliability of emergency braking.

[0013] Preferably, a rubber sleeve is provided on the outer side of the transmission wheel. The structure can prevent the transmission wheel from slipping with the long rail.

[0014] Preferably, the long rail is provided with a second rack, and the outer side of the transmission wheel is provided with external teeth adapted to the second rack. The structure can prevent the transmission wheel and the long rail from slipping.

[0015] Preferably, the locking gear, locking rack and brake block are two in number and are arranged on opposite sides of the long rail.

[0016] Preferably, the number of the centrifugal sliders is multiple, and the multiple centrifugal sliders are evenly arranged on the transmission wheel. The structure makes emergency braking more reliable.

[0017] Preferably, it also includes a locking mechanism, which includes a latch, a rotating shaft, a centrifugal rod, a connecting rod, a telescopic block, a third spring and a baffle; the rotating shaft is connected to the transmission wheel, one end of the centrifugal rod is hinged to the rotating shaft, the telescopic block is sleeved on the rotating shaft and slidably connected to the rotating shaft, one end of the third spring is connected to the telescopic block, the other end of the third spring is connected to the rotating shaft, one end of the connecting rod is hinged to the telescopic block, the other end of the connecting rod is hinged to the centrifugal rod, the latch is slidably connected to the support shell, the support shell is provided with a through hole, the baffle is arranged on the through hole, and the baffle is connected to the locking rack; a plurality of slots or holes adapted to the latch are provided on the long rail.

[0018] The locking mechanism can insert the latch into the slot or hole on the long rail after the elevator is stopped by the brake mechanism, so that the elevator is stuck in position and will not move, and the elevator can wait for rescue stably. When the elevator is operating normally, the baffle is fixed to the locking rack to block the through hole, and the latch cannot extend. When the elevator stalls and falls rapidly, the baffle moves with the locking rack to expose the through hole. Before the elevator stops, the transmission wheel drives the rotating shaft to rotate. When the centrifugal rod rotates, it expands outward under the action of centrifugal force, and the telescopic block overcomes the elastic force of the third spring and is pulled back. When the elevator is stopped by the brake mechanism, the transmission wheel stops rotating, and the telescopic block moves to the side of the latch under the action of the third spring, driving the latch to extend out of the through hole. The latch can be inserted into the slot or hole, so that the elevator is stuck in position. The above technical scheme can not only ensure that the elevator can be stably locked after emergency braking, but also avoid the latch from extending when the elevator is descending at high speed without being braked, thereby avoiding the huge impact caused by instantaneous braking.

[0019] Preferably, a counterweight is provided at one end of the centrifugal rod away from the rotating shaft. The structure can increase the centrifugal force when the centrifugal rod rotates.

[0020] Preferably, a fourth spring is sleeved outside the latch, one end of the fourth spring is connected to the latch, and the other end of the fourth spring is connected to the support shell; the fourth spring pushes the latch to one side of the telescopic block, and the elastic force of the third spring is greater than that of the fourth spring. The structure can prevent the latch from being accidentally extended after the baffle is opened.

[0021] Preferably, a thrust bearing is provided between the telescopic block and the latch pin. The structure can avoid rod friction between the telescopic block and the latch pin.

[0022] The beneficial effects of the present invention are: (1) it can play an emergency braking role during the process of the elevator stalling and accelerating to descend, thereby increasing the reliability of the elevator; and the entire braking mechanism is realized by a purely mechanical structure, which can also play an emergency braking role in special circumstances such as elevator power outage or controller failure, thereby further ensuring the safety of the elevator; (2) it can ensure that the elevator can be stably locked after emergency braking, and can also prevent the pin from extending when the elevator is descending at high speed without being braked, thereby avoiding the huge impact caused by instantaneous braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the brake mechanism of the present invention;

[0025] Figure 3 It is a partial structural schematic diagram of the present invention;

[0026] Figure 4 It is a structural schematic diagram of Example 3.

[0027] In the figure: brake mechanism 1, long rail 1.1, support shell 1.2, through hole 1.2.1, transmission wheel 1.3, slide groove 1.3.1, centrifugal slider 1.4, sleeve wheel 1.5, inner tooth 1.5.1, locking gear 1.6, locking rack 1.7, first inclined surface 1.7.1, brake block 1.8, second inclined surface 1.8.1, first spring 1.9, gear reduction mechanism 1.10, friction plate 1.11, ratchet 1.12, locking mechanism 2, latch 2.1, rotating shaft 2.2, centrifugal rod 2.3, connecting rod 2.4, telescopic block 2.5, third spring 2.6, baffle 2.7, counterweight block 2.8, fourth spring 2.9, thrust bearing 2.10, elevator box 3. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] Embodiment 1:

[0030] like Figure 1 , Figure 2 and Figure 3As shown, an elevator with an emergency brake mechanism comprises an elevator body 3 and a brake mechanism 1, the number of the brake mechanisms is two, and the brake mechanisms are arranged on opposite sides of the bottom of the elevator body; the brake mechanism 1 comprises a long rail 1.1, a support shell 1.2, a transmission wheel 1.3, a centrifugal slider 1.4, a sleeve wheel 1.5, a locking gear 1.6, a locking rack 1.7, a brake block 1.8, a pawl 1.12 and a second spring, the transmission wheel 1.3, the sleeve wheel 1.5 and the locking gear 1.6 are respectively connected to the support shell 1.2 for rotation; the transmission wheel 1.3 is in contact with the long rail 1.1, the transmission wheel 1.3 is provided with a first spring 1.9 and a slide groove 1.3.1 arranged along the diameter direction of the transmission wheel 1.3, the centrifugal slider 1.4 is slidably connected to the transmission wheel 1.3 through the slide groove 1.3.1, the number of the centrifugal sliders 1.4 is multiple, and the multiple centrifugal sliders 1.4 are evenly arranged On the transmission wheel 1.3, one end of the first spring 1.9 is connected to the centrifugal slider 1.4, and the other end of the first spring 1.9 is connected to the transmission wheel 1.3. The sleeve wheel 1.5 is sleeved on the outside of the transmission wheel 1.3, and the inner wall of the sleeve wheel 1.5 is provided with an internal tooth 1.5.1 adapted to the centrifugal slider 1.4; the sleeve wheel 1.5 is connected to the locking gear 1.6 through a gear reduction mechanism 1.10, and the locking rack 1.7 is slidably connected to the support shell 1.2, and the locking gear 1.6 and the locking rack 1.7 are adapted, and one end of the locking rack 1.7 is provided with a first inclined surface 1.7.1; the brake block 1.8 is slidably connected to the support shell 1.2, and one end of the brake block 1.8 is provided with a second inclined surface 1.8.1, and the other end of the brake block 1.8 is in contact with the long rail 1.1, and the first inclined surface 1.7.1 is in contact with the second inclined surface 1.8.1; the brake block 1.8 is provided with a friction plate 1.11 on the side close to the long rail 1.1. The locking gear 1.6 is provided with a ratchet, one end of the second spring is connected to the support shell 1.2, the other end of the second spring is connected to the pawl 1.12, one end of the pawl 1.12 is rotatably connected to the support shell 1.2, and the other end of the pawl 1.12 contacts the ratchet. A rubber sleeve is provided on the outer side of the transmission wheel 1.3.

[0031] In the above technical solution, the sliding direction of the locking rack 1.7 is perpendicular to the sliding direction of the brake block 1.8, and the long rail 1.1 is fixed to the inner wall of the elevator shaft. When the elevator stalls and falls rapidly, the transmission wheel 1.3 rotates rapidly, driving the centrifugal slider 1.4 to rotate. The centrifugal slider 1.4 overcomes the elastic force of the first spring 1.9 under the action of centrifugal force and extends outward. The centrifugal slider 1.4 contacts the inner teeth 1.5.1 on the sleeve wheel 1.5, driving the sleeve wheel 1.5 to rotate. The sleeve wheel 1.5 further drives the locking gear 1.6 to rotate. The locking gear 1.6 drives the locking rack 1.7 to slide. The first inclined surface 1.7.1 on the locking rack 1.7 squeezes the second inclined surface 1.8.1, so that the brake block 1.8 squeezes the long rail 1.1 to brake the elevator. When the elevator is rising and falling normally, the transmission wheel 1.3 rotates slowly, and the centrifugal force of the centrifugal slider 1.4 cannot overcome the elastic force of the first spring 1.9, and the centrifugal slider 1.4 will not drive the sleeve wheel 1.5 to rotate. The above technical solution can play an emergency braking role during the elevator stall acceleration descent process, thereby increasing the reliability of the elevator; and the entire braking mechanism is realized by a purely mechanical structure, which can also play an emergency braking role in special circumstances such as elevator power failure or controller failure, further ensuring the safety of the elevator. A fifth spring is provided on the brake block 1.8, and when the locking rack 1.7 does not squeeze the brake block 1.8, the brake block 1.8 is retracted.

[0032] Embodiment 2:

[0033] like Figure 1 , Figure 2 and Figure 3As shown, an elevator with an emergency brake mechanism comprises an elevator body and a brake mechanism 1, the number of the brake mechanisms is two, and the brake mechanisms are arranged on opposite sides of the bottom of the elevator body; the brake mechanism 1 comprises a long rail 1.1, a support shell 1.2, a transmission wheel 1.3, a centrifugal slider 1.4, a sleeve wheel 1.5, a locking gear 1.6, a locking rack 1.7, a brake block 1.8, a pawl 1.12 and a second spring, the transmission wheel 1.3, the sleeve wheel 1.5 and the locking gear 1.6 are respectively connected to the support shell 1.2 for rotation; the transmission wheel 1.3 is in contact with the long rail 1.1, the transmission wheel 1.3 is provided with a first spring 1.9 and a slide groove 1.3.1 arranged along the diameter direction of the transmission wheel 1.3, the centrifugal slider 1.4 is slidably connected to the transmission wheel 1.3 through the slide groove 1.3.1, the number of the centrifugal sliders 1.4 is multiple, and the multiple centrifugal sliders 1.4 are evenly arranged On the transmission wheel 1.3, one end of the first spring 1.9 is connected to the centrifugal slider 1.4, and the other end of the first spring 1.9 is connected to the transmission wheel 1.3. The sleeve wheel 1.5 is sleeved on the outside of the transmission wheel 1.3, and the inner wall of the sleeve wheel 1.5 is provided with an internal tooth 1.5.1 adapted to the centrifugal slider 1.4; the sleeve wheel 1.5 is connected to the locking gear 1.6 through a gear reduction mechanism 1.10, and the locking rack 1.7 is slidably connected to the support shell 1.2, and the locking gear 1.6 and the locking rack 1.7 are adapted, and one end of the locking rack 1.7 is provided with a first inclined surface 1.7.1; the brake block 1.8 is slidably connected to the support shell 1.2, and one end of the brake block 1.8 is provided with a second inclined surface 1.8.1, and the other end of the brake block 1.8 is in contact with the long rail 1.1, and the first inclined surface 1.7.1 is in contact with the second inclined surface 1.8.1; the brake block 1.8 is provided with a friction plate 1.11 on the side close to the long rail 1.1. It includes a ratchet 1.12 and a second spring, a ratchet is provided on the sleeve wheel 1.5, one end of the second spring is connected to the support shell 1.2, the other end of the second spring is connected to the ratchet 1.12, one end of the ratchet 1.12 is rotationally connected to the support shell 1.2, and the other end of the ratchet 1.12 is in contact with the ratchet. The structure can prevent the locking gear 1.6 from reversing and ensure the reliability of emergency braking. A second rack is provided on the long rail 1.1, and an outer side of the transmission wheel 1.3 is provided with external teeth adapted to the second rack.

[0034] In the above technical solution, the sliding direction of the locking rack 1.7 is perpendicular to the sliding direction of the brake block 1.8, and the long rail 1.1 is fixed to the inner wall of the elevator shaft. When the elevator stalls and falls rapidly, the transmission wheel 1.3 rotates rapidly, driving the centrifugal slider 1.4 to rotate. The centrifugal slider 1.4 overcomes the elastic force of the first spring 1.9 under the action of centrifugal force and extends outward. The centrifugal slider 1.4 contacts the inner teeth 1.5.1 on the sleeve wheel 1.5, driving the sleeve wheel 1.5 to rotate. The sleeve wheel 1.5 further drives the locking gear 1.6 to rotate. The locking gear 1.6 drives the locking rack 1.7 to slide. The first inclined surface 1.7.1 on the locking rack 1.7 squeezes the second inclined surface 1.8.1, so that the brake block 1.8 squeezes the long rail 1.1 to brake the elevator. When the elevator is rising and falling normally, the transmission wheel 1.3 rotates slowly, and the centrifugal force of the centrifugal slider 1.4 cannot overcome the elastic force of the first spring 1.9, and the centrifugal slider 1.4 will not drive the sleeve wheel 1.5 to rotate. The above technical solution can play an emergency braking role during the elevator stall acceleration descent process, thereby increasing the reliability of the elevator; and the entire braking mechanism is realized by a purely mechanical structure, which can also play an emergency braking role in special circumstances such as elevator power failure or controller failure, further ensuring the safety of the elevator. A fifth spring is provided on the brake block 1.8, and when the locking rack 1.7 does not squeeze the brake block 1.8, the brake block 1.8 is retracted.

[0035] Embodiment 3:

[0036] like Figure 4 As shown, on the basis of Example 1 or Example 2, a locking mechanism 2 is further included, and the locking mechanism 2 includes a latch 2.1, a rotating shaft 2.2, a centrifugal rod 2.3, a connecting rod 2.4, a telescopic block 2.5, a third spring 2.6 and a baffle 2.7; the rotating shaft 2.2 is connected to the transmission wheel 1.3, one end of the centrifugal rod 2.3 is hinged to the rotating shaft 2.2, the telescopic block 2.5 is sleeved on the rotating shaft 2.2 and is slidably connected to the rotating shaft 2.2, one end of the third spring 2.6 is connected to the telescopic block 2.5 is connected, the other end of the third spring 2.6 is connected to the rotating shaft 2.2, one end of the connecting rod 2.4 is hinged to the telescopic block 2.5, the other end of the connecting rod 2.4 is hinged to the centrifugal rod 2.3, the latch 2.1 is slidably connected to the supporting shell 1.2, the supporting shell 1.2 is provided with a through hole 1.2.1, a baffle 2.7 is arranged on the through hole 1.2.1, and the baffle 2.7 is connected to the locking rack 1.7; the long rail 1.1 is provided with a plurality of slots adapted to the latch 2.1. The end of the centrifugal rod 2.3 away from the rotating shaft 2.2 is provided with a counterweight block 2.8, the outer side of the latch 2.1 is sleeved with a fourth spring 2.9, one end of the fourth spring 2.9 is connected to the latch 2.1, and the other end of the fourth spring 2.9 is connected to the supporting shell 1.2; the fourth spring 2.9 pushes the latch 2.1 to one side of the telescopic block 2.5, and the elastic force of the third spring 2.6 is greater than that of the fourth spring 2.9. A thrust bearing 2.10 is provided between the telescopic block 2.5 and the latch pin 2.1.

[0037] The locking mechanism 2 can insert the latch 2.1 into the slot or hole on the long rail 1.1 after the brake mechanism 1 stops the elevator, so that the elevator is locked and will not move, and wait for rescue stably. When the elevator is running normally, the baffle 2.7 is fixed with the locking rack 1.7 to block the through hole 1.2.1, and the latch 2.1 cannot extend. When the elevator stalls and falls rapidly, the baffle 2.7 moves with the locking rack 1.7, exposing the through hole 1.2.1. Before the elevator stops, the transmission wheel 1.3 drives the rotating shaft 2.2 to rotate. When the centrifugal rod 2.3 rotates, it expands outwards under the action of centrifugal force, and the telescopic block 2.5 overcomes the elastic force of the third spring 2.6 and is pulled back. When the elevator is stopped by the brake mechanism 1, the transmission wheel 1.3 stops rotating, and the telescopic block 2.5 moves toward the side of the latch 2.1 under the action of the third spring 2.6, driving the latch 2.1 to extend out of the through hole 1.2.1. The latch 2.1 can be inserted into the card slot or card hole, so that the elevator position is locked. The above technical solution can not only ensure that the elevator can be stably locked after emergency braking, but also avoid the latch 2.1 from extending when the elevator is descending at high speed without being braked, thereby avoiding the huge impact caused by instantaneous braking.

[0038] The beneficial effects of the present invention are: (1) it can play an emergency braking role during the process of the elevator stalling and accelerating to descend, thereby increasing the reliability of the elevator; and the entire braking mechanism is realized by a purely mechanical structure, which can also play an emergency braking role in special circumstances such as elevator power outage or controller failure, thereby further ensuring the safety of the elevator; (2) it can ensure that the elevator can be stably locked after emergency braking, and can also prevent the pin from extending when the elevator is descending at high speed without being braked, thereby avoiding the huge impact caused by instantaneous braking.

Claims

1. An elevator with an emergency brake mechanism, characterized in that: It includes an elevator box and a brake mechanism, wherein the brake mechanism includes a long rail, a support shell, a transmission wheel, a centrifugal slider, a sleeve wheel, a locking gear, a locking rack and a brake block, and the transmission wheel, the sleeve wheel and the locking gear are respectively rotatably connected with the support shell; The transmission wheel is in contact with the long rail, and the transmission wheel is provided with a first spring and a slide groove arranged along the diameter direction of the transmission wheel. The centrifugal slider is slidably connected to the transmission wheel through the slide groove, one end of the first spring is connected to the centrifugal slider, and the other end of the first spring is connected to the transmission wheel. The sleeve wheel is sleeved on the outside of the transmission wheel, and the inner wall of the sleeve wheel is provided with internal teeth adapted to the centrifugal slider; the sleeve wheel is connected to the locking gear, and the locking rack is slidably connected to the support shell, and the locking gear and the locking rack are adapted, and one end of the locking rack is provided with a first inclined surface; the brake block is slidably connected to the support shell, and one end of the brake block is provided with a second inclined surface, and the other end of the brake block is in contact with the long rail, and the first inclined surface is in contact with the second inclined surface; It also includes a locking mechanism, which includes a latch, a rotating shaft, a centrifugal rod, a connecting rod, a telescopic block, a third spring and a baffle; the rotating shaft is connected to the transmission wheel, one end of the centrifugal rod is hinged to the rotating shaft, the telescopic block is sleeved on the rotating shaft and slidably connected to the rotating shaft, one end of the third spring is connected to the telescopic block, the other end of the third spring is connected to the rotating shaft, one end of the connecting rod is hinged to the telescopic block, the other end of the connecting rod is hinged to the centrifugal rod, the latch is slidably connected to the support shell, the support shell is provided with a through hole, the baffle is arranged on the through hole, and the baffle is connected to the locking rack; a plurality of card slots or card holes adapted to the latch are provided on the long rail.

2. An elevator with an emergency brake mechanism according to claim 1, characterized in that: There are two brake mechanisms, which are arranged on two opposite sides of the bottom of the elevator box.

3. An elevator with an emergency brake mechanism according to claim 1, characterized in that: The brake block is provided with a friction plate on one side close to the long rail.

4. An elevator with an emergency brake mechanism according to claim 1, 2 or 3, characterized in that: The brake mechanism also includes a pawl and a second spring, a ratchet is provided on the locking gear, one end of the second spring is connected to the support shell, the other end of the second spring is connected to the pawl, one end of the pawl is rotatably connected to the support shell, and the other end of the pawl is in contact with the ratchet.

5. An elevator with an emergency brake mechanism according to claim 1, 2 or 3, characterized in that: The brake mechanism also includes a pawl and a second spring, a ratchet is provided on the sleeve wheel, one end of the second spring is connected to the support shell, the other end of the second spring is connected to the pawl, one end of the pawl is rotatably connected to the support shell, and the other end of the pawl is in contact with the ratchet.

6. An elevator with an emergency brake mechanism according to claim 1, 2 or 3, characterized in that: A rubber sleeve is arranged on the outer side of the transmission wheel.

7. An elevator with an emergency brake mechanism according to claim 1, 2 or 3, characterized in that: The long rail is provided with a second rack, and the outer side of the transmission wheel is provided with external teeth matched with the second rack.

8. An elevator with an emergency brake mechanism according to claim 1, 2 or 3, characterized in that: The number of the locking gear, the locking rack and the brake block are two each, and they are arranged on the opposite sides of the long rail.

Images