Hydraulic elevator safety device and safety protection method thereof

Abstract

The present application relates to the technical fields of hydraulic elevator, and proposes a kind of hydraulic elevator safety protection device and its safety protection method, its device includes hydraulic cylinder and plunger, also include stand, be set in the inside of shaft, follow gear, be set in the outer wall of car by rotating seat rotation, the side of stand close to car is provided with rack, follow gear and rack meshing, speed limiter, be set on car, inertia locking assembly, be provided with multiple, for when car falls, car is locked, clamping mechanism, be provided with multiple and inertia locking assembly one-to-one corresponding, for driving inertia rotating rod to the clamping of stand, prevent deviation component, prevent deviation component includes limiting sleeve, be set in the outer wall of car, limiting rod, be set in the inside of shaft.Through the above technical scheme, solve the problem that existing technology is not set safety protection device in hydraulic elevator, there is potential safety hazard and inconvenient to prevent car from deviating.

Description

Technical Field

[0001] This invention relates to the field of hydraulic elevator technology, specifically to a hydraulic elevator safety protection device and its safety protection method. Background Technology

[0002] A hydraulic elevator is an elevator that uses a hydraulic power source to pressurize oil into a cylinder, causing the plunger to move linearly, and directly or indirectly via steel wire ropes to move the car.

[0003] Hydraulic elevators use a hydraulic system under the car to control the flow of hydraulic oil, generating resistance to prevent the car from falling. However, existing hydraulic elevators typically lack safety devices such as speed governors and safety clamps. During operation, the hydraulic system can occasionally leak oil. Furthermore, variations in hydraulic oil viscosity due to temperature changes make controlling the flow of hydraulic oil difficult, potentially leading to sudden car drops and posing a safety hazard. Additionally, the vertical movement of the hydraulic elevator is limited only by guide rails, which can cause the car to sway during long-term operation, resulting in stress concentration on one side and reducing the elevator's lifespan. Summary of the Invention

[0004] This invention proposes a safety protection device and method for hydraulic elevators, which solves the problems in related technologies where hydraulic elevators do not have safety protection devices, resulting in safety hazards and difficulty in preventing car swaying.

[0005] The technical solution of the present invention is as follows:

[0006] A safety protection device for a hydraulic elevator includes a hydraulic cylinder and a plunger, and further includes:

[0007] A column, wherein the column is installed inside the shaft;

[0008] A traveling gear is rotatably mounted on the outer wall of the car via a rotating seat. A rack is provided on the side of the column near the car, and the traveling gear meshes with the rack.

[0009] A speed limiter, which is installed on the car to monitor the speed of the car;

[0010] An inertial locking assembly, wherein multiple inertial locking assemblies are provided, the inertial locking assembly being used to lock the car in the event of a car fall, the inertial locking assembly comprising:

[0011] An inertial rotation rod is provided, and two inertial rotation rods are provided. The inertial rotation rods are slidably disposed on the rotating seat, and the column is located between the two inertial rotation rods.

[0012] A locking lever, which is slidably disposed on the side of the two inertial rotating rods away from the car;

[0013] A mounting plate, wherein the mounting plate is disposed on the side of the column away from the car;

[0014] A clamping mechanism, wherein multiple clamping mechanisms are provided and each corresponds to one of the inertial locking components, the clamping mechanism is used to drive the inertial rotation rod to clamp the column, and the clamping mechanism includes:

[0015] A rotating shaft is disposed at the end of the inertial rotating rod away from the column, and the rotating shaft is slidably disposed on the rotating seat;

[0016] Push plate one and push plate two are slidably disposed outside the car. The ends of the two rotating shafts away from the inertial rotating rod are respectively rotatably disposed with push plate one and push plate two. Push plate one and push plate two are connected by transmission.

[0017] An electric cylinder is installed outside the car, and a push plate is installed at the output end of the electric cylinder. The electric cylinder and the speed limiter are electrically connected.

[0018] A reset spring is provided between the push plate 2 and the rotating seat;

[0019] Anti-offset component, the anti-offset component comprising:

[0020] A limiting sleeve is disposed on the outer wall of the car;

[0021] A limiting rod is provided inside the shaft and is located inside the limiting sleeve.

[0022] The plunger is disposed at the bottom of the car via a connector, the connector comprising:

[0023] A movable plate, the movable plate being disposed around the plunger;

[0024] A fixing plate is provided at the bottom of the car.

[0025] A connecting seat is disposed on the top of the movable plate, and a connecting groove is provided on the connecting seat;

[0026] A connecting post is disposed at the bottom of the fixed plate. The connecting post and the connecting groove are in sliding fit. A magnet is disposed inside the connecting groove. The connecting post is made of iron metal.

[0027] To limit the movement of the traveling gear and the column, limit plates are provided on both sides of the traveling gear. A ball bearing is rotatably mounted on the side of the limit plate closest to the column, and the ball bearing is in contact with the column.

[0028] To further improve the stability of the car, an auxiliary damping assembly is provided on the limiting plate, the auxiliary damping assembly including:

[0029] The movable ring has a movable groove on the limiting plate on the side away from the electric cylinder. The movable ring is slidably disposed inside the movable groove. The movable ring is disposed on the side of the push plate away from the electric cylinder by a connecting bracket.

[0030] A fixed base is provided at one end of the movable ring near the rotating base, and a telescopic groove is provided on the fixed base;

[0031] A movable rod is slidably disposed inside the telescopic groove, and a telescopic spring is provided between the movable rod and the inner wall of the telescopic groove.

[0032] To cool down the hydraulic cylinder, a protective shell is installed on the outside of the hydraulic cylinder, and a cooling fan is installed inside the protective shell.

[0033] To cool down the traveling gear and rack and reduce frictional heating during operation, the column has a hollow structure and is connected to the protective shell. The column has multiple air vents.

[0034] A safety protection method for a hydraulic elevator safety protection device, using the aforementioned hydraulic elevator safety protection device, includes the following steps:

[0035] Step 1: Anti-sway protection:

[0036] a. During the up and down movement of the car, there is a gap between the limiting sleeve and the limiting rod. The car deviates, and the edge of the limiting sleeve contacts and presses against the limiting rod. The movement of the car is blocked by the damping between the limiting sleeve and the limiting rod.

[0037] b. The limiting plate limits the distance between the car and the column, while the rack limits the distance between the traveling gear;

[0038] Step 2, Fall Protection:

[0039] a. When the car suddenly drops, the inertia-driven rotating rod will rotate upward due to inertia, and the clamp rod will be hooked onto the hanging plate to support the car.

[0040] b. When the speed limiter senses the change in the car speed, it controls the electric cylinder to move push plate one and push plate two toward the column, which in turn drives the inertial rotation rod to clamp the column.

[0041] c. When the electric cylinder drives the push plate to approach the column, the push plate drives the connecting frame to push the moving ring, causing the fixed seat and the moving rod to approach the rotating seat. The end of the moving rod passes over the rotating seat, and the rotating seat blocks the moving rod, the fixed seat and the limiting plate, causing the following gear to stop rotating. The rack limits the following gear and the car.

[0042] The beneficial effects of this invention are as follows:

[0043] 1. In this invention, by means of the cooperation between the limiting sleeve and the column, when the car sways, the limiting sleeve presses against the column to prevent the car from moving further. The car is limited by the cooperation of the traveling gear and the rack, so as to keep it vertically rising and falling.

[0044] 2. In this invention, when the car accelerates downward, the inertial rotation rod deflects upward, and the inertial locking assembly limits the car's position. At the same time, the speed limiter monitors the car's speed and controls the clamping mechanism to clamp the column, ensuring the car's stability.

[0045] 3. Therefore, compared with existing hydraulic elevators that do not have safety clamps or other installation devices, this invention can protect the car from swaying and falling, thus providing higher safety. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the local structure at point A;

[0048] Figure 3 For the present invention Figure 1 A magnified view of the structure at point B in the middle;

[0049] Figure 4 This is a partial cross-sectional structural schematic diagram of the present invention;

[0050] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the local structure at point C;

[0051] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the local structure at point E;

[0052] Figure 7 For the present invention Figure 4 A magnified schematic diagram of the local structure at point D;

[0053] Figure 8 This is a schematic diagram of the structure of the car, inertia locking assembly, and clamping mechanism of the present invention;

[0054] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the local structure at point F;

[0055] Figure 10 This is a schematic diagram of the plunger and connector of the present invention;

[0056] Figure 11 For the present invention Figure 10 A magnified schematic diagram of the local structure at point G;

[0057] Figure 12 This is a schematic diagram of the clamping mechanism of the present invention;

[0058] Figure 13 For the present invention Figure 12 A magnified schematic diagram of the local structure at point H;

[0059] Figure 14 This is a schematic diagram of the auxiliary resistance reduction component of the present invention;

[0060] Figure 15 For the present invention Figure 14 A magnified schematic diagram of the structure at point I in the middle.

[0061] In the picture:

[0062] 1. Car; 2. Hydraulic cylinder; 3. Piston; 4. Hydraulic pump station; 5. Column; 6. Traveling gear; 7. Rack; 8. Speed ​​governor; 9. Limit plate; 10. Ball bearing; 11. Protective shell; 12. Cooling fan; 13. Rotary seat;

[0063] 101. Inertia rotation rod; 102. Clamping rod; 103. Hanging plate; 104. Horizontal plate;

[0064] 201. Rotating shaft; 202. Push plate one; 203. Push plate two; 204. Electric cylinder; 205. Rotating roller; 206. Steel wire rope;

[0065] 301. Limiting sleeve; 302. Limiting rod;

[0066] 401. Movable plate; 402. Fixed plate; 403. Connecting seat; 404. Connecting column; 405. Magnet;

[0067] 501. Moving ring; 502. Fixed base; 503. Moving rod. Detailed Implementation

[0068] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0069] like Figures 1 to 15 As shown, this embodiment proposes a safety protection device for a hydraulic elevator, including a hydraulic cylinder 2 and a plunger 3, as well as a column 5, a traveling gear 6, a speed limiter 8, an inertial locking assembly, a clamping mechanism, and an anti-deviation assembly.

[0070] During the operation of the hydraulic elevator, the hydraulic cylinder 2 is equipped with a hydraulic pump station 4. When the elevator goes up, the hydraulic pump station 4 provides the power pressure difference required for the car 1 to go up. The valve group on the hydraulic pump station 4 controls the flow of hydraulic oil. The hydraulic oil pushes the plunger 3 in the hydraulic cylinder 2 to lift the car 1, thereby realizing the upward movement of the elevator. When the elevator goes down, the valve group is opened, and the pressure difference caused by the weight of the car 1 (the weight of passengers (cargo)) is used to make the hydraulic oil flow back into the hydraulic oil tank, thereby realizing the downward movement of the elevator.

[0071] like Figures 1 to 9 As shown, to ensure the stability of the car 1's lifting and lowering, the car 1 is limited. The column 5 is set inside the hoistway, and the traveling gear 6 is rotatably set on the outer wall of the car 1 through the rotating seat 13. A rack 7 is set on the side of the column 5 near the car 1. The traveling gear 6 and the rack 7 mesh, and the rack 7 limits the traveling gear 6 and the car 1. During the lifting and lowering of the car 1, the gear drives the gear to rotate along the rack 7 to ensure the stability of the lifting and lowering of the car 1. To improve the stability of the car 1, four columns 5 are preferred, with two columns 5 set on each side of the car 1.

[0072] like Figures 1 to 15 As shown, in order to protect the car 1 from falling, this embodiment is equipped with a speed limiter 8. The speed limiter 8 is installed on the car 1 and is used to monitor the speed of the car 1. The speed limiter 8 is preset to a certain speed. When the moving speed of the car 1 exceeds the preset speed, the locking mechanism is controlled to lock the car 1.

[0073] like Figures 1 to 9As shown, in this embodiment, considering that the speed limiter 8 and other safety devices may experience circuit failures or other problems leading to inaccurate monitoring and untimely control, an inertial locking assembly is provided. This assembly uses the inertia generated when the car 1 suddenly descends to lock the car 1. Multiple inertial locking assemblies are provided. The inertial locking assembly is used to lock the car 1 when it falls. The inertial locking assembly includes an inertial rotating rod 101, a locking rod 102, and a hanging plate 103. There are two inertial rotating rods 101, which are slidably mounted on the rotating seat 13. The column 5 is located between the two inertial rotating rods 101. The locking rod 102 is slidably mounted on the side of the two inertial rotating rods 101 away from the car 1. The hanging plate 103 is mounted on the side of the column 5 away from the car 1.

[0074] The rotating seat 13 is equipped with a horizontal plate 104. The bottom end of the inertial rotation rod 101 contacts the top end of the horizontal plate 104. The horizontal plate 104 supports the inertial rotation rod 101, keeping it in a horizontal state. When the car 1 is normally rising and falling, the acceleration of the car 1 is small, and the inertial rotation rod 101 is in a relatively stable state. There is a certain gap between the hanging plate 103 and the locking rod 102, which allows the car 1 to rise and fall normally. When the car 1 suddenly falls, under the action of inertia, the inertial rotation rod 101 rotates upward relative to the rotating seat 13 and the car 1, causing the locking rod 102 to rotate into the range of the scraper. The car 1 falls rapidly, causing the locking rod 102 to be hooked on the hanging plate 103. The hanging plate 103 supports the locking rod 102 and the inertial rotation rod 101, thereby supporting the rotating seat 13 and the car 1 and ensuring the stability of the car 1.

[0075] like Figures 8 to 13 As shown, in this embodiment, a clamping mechanism is provided to secure the car 1 more stably. Multiple clamping mechanisms are provided, each corresponding to an inertial locking component. The clamping mechanism drives the inertial rotation rod 101 to clamp the column 5. The clamping mechanism includes a rotating shaft 201, a first push plate 202, a second push plate 203, and an electric cylinder 204. The rotating shaft 201 is located at the end of the inertial rotation rod 101 away from the column 5 and is slidably mounted on the rotating seat 13. The first push plate 202 and the second push plate 203 are both slidably mounted outside the car 1. The ends of the two rotating shafts 201 away from the inertial rotation rod 101 are respectively connected to the push plates 204. Push plate 1 202 and push plate 2 203 are rotatably configured and are connected by a transmission. Specifically, a rotating roller 205 is rotatably configured on the outside of the car 1. The rotating roller 205 is located on the same side of push plate 1 202 and push plate 2 203. A steel wire rope 206 is connected to the side of push plate 1 202 near the rotating roller 205. The steel wire rope 206 passes around the rotating roller 205 and is connected to push plate 2 203. A return spring is provided between push plate 2 203 and rotating seat 13. Electric cylinder 204 is located on the outside of the car 1. Push plate 1 202 is located at the output end of electric cylinder 204. Electric cylinder 204 is electrically connected to speed limiter 8.

[0076] When the speed limiter 8 senses that the car 1 is accelerating downwards, it transmits an electrical signal to the electric cylinder 204. The electric cylinder 204 drives the push plate 1 202 to move closer to the column 5. During the movement, the push plate 1 202 pulls the wire rope 206. The other end of the wire rope 206 pulls the push plate 203 to move towards the push plate 1 202, thereby driving the rotating shaft 201 and the inertial rotation rod 101 to move closer to the column 5. The inertial rotation rod 101 clamps the column 5, further ensuring the stability of the car 1. When the clamping is released, the electric cylinder 204 drives the push plate 1 202 away from the column 5, loosens the wire rope 206, and under the action of the return spring, drives the push plate 203 away from the column 5 to return to its original position, realizing the relative movement of the push plate 1 202 and the push plate 203, clamping and releasing the column 5.

[0077] like Figures 1 to 8 As shown in this embodiment, considering the difficulty of detecting the verticality of the elevator using existing technology, an anti-deviation component is provided to ensure the vertical lifting and lowering of the elevator. The anti-deviation component includes a limiting sleeve 301 and a limiting rod 302. The limiting sleeve 301 is installed on the outer wall of the car 1, and the limiting rod 302 is installed inside the hoistway. The limiting rod 302 is located inside the limiting sleeve 301, and there is a small gap between the limiting sleeve 301 and the limiting rod 302. During the normal lifting and lowering of the car 1, the limiting sleeve 301 and the limiting rod 302 do not contact each other. When the car 1 tilts, it causes the limiting sleeve 301 to tilt as well, pressing the limiting sleeve 301 against the limiting rod 302. There is a large damping between the limiting sleeve 301 and the limiting rod 302, which can stop the car 1 and prevent the car 1 from tilting and lifting, thus avoiding safety hazards and allowing for timely maintenance of the car 1.

[0078] like Figures 10 to 11 As shown, in this embodiment, to prevent the plunger 3 from suddenly falling and causing the car 1 to fall due to a hydraulic system malfunction, the plunger 3 and the car 1 are movable. Specifically, the plunger 3 is set at the bottom of the car 1 through a connector. The connector includes a moving plate 401, a fixed plate 402, a connecting seat 403, and a connecting column 404. The moving plate 401 is set around the plunger 3, the fixed plate 402 is set at the bottom of the car 1, the connecting seat 403 is set at the top of the moving plate 401, and a connecting groove is provided on the connecting seat 403. The connecting column 404 is set at the bottom of the fixed plate 402. The connecting column 404 and the connecting groove are in sliding fit. A magnet 405 is set inside the connecting groove, and the material of the connecting column 404 is iron.

[0079] When the elevator ascends, the plunger 3 drives the moving plate 401 and the connecting seat 403 to rise, which in turn drives the connecting column 404 and the car 1 to rise. When the elevator descends, the car 1 presses down on the connecting seat 403 and the moving plate 401 through the connecting column 404, causing the plunger 3 to descend. The magnet 405 ensures the stability of the connection between the connecting column 404 and the connecting seat 403 during normal car 1 ascent and descent. If hydraulic oil leaks or other malfunctions cause the plunger 3 to suddenly descend, the plunger 3 will start to drive the car 1 to fall rapidly. The speed limiter 8 senses that the car 1 is overspeeding and controls the clamping mechanism to clamp the car 1 to ensure its stability. The plunger 3 continues to fall, and the magnet 405 separates from the connecting column 404, causing the plunger 3 to separate from the car 1, preventing the plunger 3 from forcibly driving the car 1 to fall, thereby ensuring the safety of the car 1.

[0080] like Figures 1 to 9 As shown in this embodiment, in order to limit the movement of the following gear 6 and the column 5, limit plates 9 are provided on both sides of the following gear 6. A ball bearing 10 is rotatably installed on the side of the limit plate 9 near the column 5. The ball bearing 10 contacts the column 5, and the column 5 is located between the two limit plates 9. The column 5 is clamped by the ball bearing 10 to ensure the stability between the following gear 6 and the column 5. At the same time, the rotation of the ball bearing 10 can reduce the obstruction of the column 5 to the rotation and lifting of the following gear 6.

[0081] like Figures 14 to 15 As shown, in this embodiment, to further improve the stability of the car 1, an auxiliary blocking assembly is provided on the limiting plate 9. The auxiliary blocking assembly includes a moving ring 501, a fixed seat 502, and a moving rod 503. A moving groove is provided on the limiting plate 9 on the side away from the electric cylinder 204. The moving ring 501 is slidably disposed inside the moving groove. The moving ring 501 is disposed on the side of the push plate 202 away from the electric cylinder 204 through a connecting frame. The fixed seat 502 is disposed at the end of the moving ring 501 near the rotating seat 13. A telescopic groove is provided on the fixed seat 502. The moving rod 503 is slidably disposed inside the telescopic groove. A telescopic spring is provided between the moving rod 503 and the inner wall of the telescopic groove.

[0082] When the speed limiter 8 senses the car 1 accelerating downwards, it controls the electric cylinder 204 to open, causing push plate 1 202 and push plate 203 to move closer to the column 5. Push plate 1 202 drives the connecting frame to push the moving ring 501. The moving ring 501 drives the fixed seat 502 and the moving rod 503 to move towards the rotating seat 13. The rotating seat 13 blocks the moving rod 503, thereby stopping the fixed seat 502 and the limiting plate 9. The following gear 6 stops rotating. The following gear 6 and the car 1 can be clamped by the rack 7, and are within the range of the rotating seat 13. Multiple movable rods 503 within the enclosure contact the rotating seat 13. The rotating seat 13 pushes the movable rods 503 into the telescopic groove to compress the telescopic spring. When the electric cylinder 204 drives the push plate 202 to return to its original position, the clamping of the inertial rotating rod 101 on the column 5 is released. The push plate 202 drives the movable ring 501 away from the rotating seat 13 to return to its original position, and drives the movable rods 503 to return to their original position. The limiting plate 9 loses the obstruction of the rotating seat 13 on the movable rods 503 and can continue to rotate, so that the car 1 can rise and fall normally.

[0083] like Figures 3 to 7 As shown, in this embodiment, to cool the hydraulic cylinder 2, a protective shell 11 is installed on the outside of the hydraulic cylinder 2, and a cooling fan 12 is installed inside the protective shell 11. The column 5 has a hollow structure and is connected to the protective shell 11. The column 5 has multiple air vents. A pit is opened in the well shaft, and the hydraulic cylinder 2 is installed inside the pit. The protective shell 11 can protect the hydraulic cylinder 2. The hydraulic cylinder 2 is in a cold underground environment. At the same time, the hydraulic pump station 4 is equipped with a cooler, and the hydraulic oil delivered to the hydraulic cylinder 2 is low temperature. In the warm state, the cooling fan 12 blows cold air into the protective shell 11 to further cool down the hydraulic cylinder 2, so as to avoid the oil temperature from overheating and affecting the normal use of the hydraulic cylinder 2. At the same time, the cold air in the protective shell 11 is blown into the interior of the column 5 to cool down the column 5 and the rack 7, so as to avoid the car 1 from being damaged by excessive friction caused by the car 6 and the rack 7 due to long-term lifting and lowering. At the same time, the cold air blows into the car 1 to ensure air circulation in the car 1, so as to avoid the stuffiness and thin air phenomenon in the closed space inside the car 1.

[0084] A safety protection method for a hydraulic elevator safety protection device, using the aforementioned hydraulic elevator safety protection device, includes the following steps:

[0085] Step 1: Anti-sway protection:

[0086] a. During the up-and-down movement of the car 1, there is a gap between the limiting sleeve 301 and the limiting rod 302, causing the car 1 to deviate. The edge of the limiting sleeve 301 contacts and presses against the column 5, and the movement of the car 1 is blocked by the damping between the limiting sleeve 301 and the limiting rod 302.

[0087] b. The limiting plate 9 limits the movement between the car 1 and the column 5, while the rack 7 limits the movement of the traveling gear 6.

[0088] Step 2, Fall Protection:

[0089] a. When the car 1 suddenly falls, the inertial rotation rod 101 drives the locking rod 102 to rotate upward under the action of inertia. The locking rod 102 is hooked on the hanging plate 103 to support the car 1.

[0090] b. When the speed limiter 8 senses the speed change of the car 1, it controls the electric cylinder 204 to drive the push plate 1 202 and push plate 2 203 to move towards the column 5, thereby driving the inertial rotation rod 101 to clamp the column 5.

[0091] c. When the electric cylinder 204 drives the push plate 202 to approach the column 5, the push plate 202 drives the connecting frame to push the moving ring 501, so that the fixed seat 502 and the moving rod 503 approach the rotating seat 13. The end of the moving rod 503 passes over the rotating seat 13, and the rotating seat 13 blocks the moving rod 503, the fixed seat 502 and the limiting plate 9, so that the following gear 6 stops rotating, and the rack 7 limits the following gear 6 and the car 1.

[0092] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for a hydraulic elevator, comprising a hydraulic cylinder (2) and a plunger (3), characterized in that, Also includes: A column (5) is installed inside the shaft; The following gear (6) is rotatably mounted on the outer wall of the car (1) via a rotating seat (13). A rack (7) is provided on the side of the column (5) near the car (1). The following gear (6) and the rack (7) mesh. Speed ​​limiter (8), which is installed on the car (1) to monitor the speed of the car (1); An inertial locking assembly, wherein multiple inertial locking assemblies are provided, the inertial locking assemblies are used to lock the car (1) when the car (1) falls, the inertial locking assemblies include: An inertial rotation rod (101) is provided in two places. The inertial rotation rod (101) is slidably disposed on the rotating seat (13). The column (5) is located between the two inertial rotation rods (101). A clamping mechanism, wherein multiple clamping mechanisms are provided and each corresponds to one of the inertial locking components, the clamping mechanism is used to drive the inertial rotation rod (101) to clamp the column (5), the clamping mechanism includes: A rotating shaft (201) is disposed at one end of the inertial rotation rod (101) away from the column (5), and the rotating shaft (201) is slidably disposed on the rotating seat (13); Push plate one (202) and push plate two (203) are slidably disposed outside the car (1). The ends of the two rotating shafts (201) away from the inertial rotating rod (101) are respectively rotatably disposed with push plate one (202) and push plate two (203). Push plate one (202) and push plate two (203) are connected by transmission. An electric cylinder (204) is installed outside the car (1), and a push plate (202) is installed at the output end of the electric cylinder (204). The electric cylinder (204) and the speed limiter (8) are electrically connected. A reset spring is provided between the push plate 2 (203) and the rotating seat (13); Anti-offset component, the anti-offset component comprising: A limiting sleeve (301) is provided on the outer wall of the car (1); A limiting rod (302) is provided inside the shaft and is located inside the limiting sleeve (301).

2. The hydraulic elevator safety protection device according to claim 1, characterized in that, The inertial locking assembly also includes: A lever (102) is slidably disposed on the side of the two inertial rotation rods (101) away from the car (1); A mounting plate (103) is provided on the side of the column (5) away from the car (1).

3. A safety protection device for a hydraulic elevator according to claim 2, characterized in that, The plunger (3) is disposed at the bottom of the car (1) via a connector, the connector comprising: A movable plate (401) is disposed around the plunger (3); A fixing plate (402) is provided at the bottom of the car (1); A connecting seat (403) is disposed on the top of the movable plate (401), and a connecting groove is provided on the connecting seat (403); A connecting post (404) is provided at the bottom of the fixing plate (402). The connecting post (404) and the connecting groove are in sliding fit. A magnet (405) is provided inside the connecting groove. The material of the connecting post (404) is iron metal.

4. A safety protection device for a hydraulic elevator according to claim 3, characterized in that, Limiting plates (9) are provided on both sides of the following gear (6). A ball bearing (10) is rotatably installed on the side of the limiting plate (9) near the column (5). The ball bearing (10) is in contact with the column (5).

5. A safety protection device for a hydraulic elevator according to claim 4, characterized in that, The limiting plate (9) is provided with an auxiliary resistance reduction component, which includes: The movable ring (501) has a movable groove on the limiting plate (9) on the side away from the electric cylinder (204). The movable ring (501) is slidably disposed inside the movable groove. The movable ring (501) is disposed on the side of the push plate (202) away from the electric cylinder (204) by a connecting bracket. A fixed seat (502) is provided at one end of the movable ring (501) near the rotating seat (13), and a telescopic groove is provided on the fixed seat (502); A movable rod (503) is slidably disposed inside the telescopic groove, and a telescopic spring is provided between the movable rod (503) and the inner wall of the telescopic groove.

6. A safety protection device for a hydraulic elevator according to claim 5, characterized in that, The hydraulic cylinder (2) is provided with a protective shell (11) on the outside, and a cooling fan (12) is provided inside the protective shell (11).

7. A safety protection method for a hydraulic elevator safety protection device, characterized in that, The hydraulic elevator safety protection device according to claim 6 includes the following steps: S1. Anti-sway protection: a. During the up-and-down movement of the car (1), there is a gap between the limiting sleeve (301) and the limiting rod (302), causing the car (1) to deviate. The edge of the limiting sleeve (301) contacts and presses against the limiting rod (302), and the movement of the car (1) is blocked by the damping between the limiting sleeve (301) and the limiting rod (302). b. The limiting plate (9) limits the distance between the car (1) and the column (5), while the rack (7) limits the distance between the traveling gear (6); S2, Fall Protection: a. When the car (1) suddenly falls, the inertia rotation rod (101) drives the locking rod (102) to rotate upward under the action of inertia. The locking rod (102) is hooked on the hanging plate (103) to support the car (1). b. The speed limiter (8) senses the speed change of the car (1) and controls the electric cylinder (204) to drive the push plate one (202) and push plate two (203) to move towards the column (5), and drive the inertial rotation rod (101) to clamp the column (5); c. When the electric cylinder (204) drives the push plate (202) to approach the column (5), the push plate (202) drives the connecting frame to push the moving ring (501), so that the fixed seat (502) and the moving rod (503) approach the rotating seat (13). The end of the moving rod (503) passes over the rotating seat (13), and the rotating seat (13) blocks the moving rod (503), the fixed seat (502) and the limiting plate (9), so that the following gear (6) stops rotating, and the rack (7) limits the following gear (6) and the car (1).

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