Hydraulic elevator car lifting pressure stabilizing oil supply device

Abstract

The present application relates to the technical fields of hydraulic elevator, especially to a kind of hydraulic elevator car lifting pressure stabilizing oil supply device, including hydraulic valve, and the installation seat is fixed in the lower of hydraulic valve, and the dirt blocking component is installed at the top of installation seat, and the oil receiving seat is slidably matched in installation seat, and the oil draining rack is arranged on oil receiving seat, and the oil pushing plate is slidably matched in oil receiving seat, and the oil recovery component is rotatably connected to the inner wall of one end of oil receiving seat, by setting oil receiving seat in the installation seat of hydraulic valve, and setting annular oil guide groove in the top of installation seat, the hydraulic oil flowing down during the disassembly and overhaul of hydraulic valve can be received and handled, effectively avoid the safety hazard caused by oil droplet falling on the ground, oil waste and environmental pollution problem, while setting oil draining rack on oil receiving seat, the parts with oil attached can be temporarily placed and drained, reduce the risk of part surface oil contamination impurities, ensure the reliable operation of hydraulic components of elevator after overhaul.

Description

Technical Field

[0001] This invention relates to the field of hydraulic elevator technology, and in particular to a hydraulic elevator car lifting and stabilizing oil supply device. Background Technology

[0002] The pressure-stabilizing oil supply system provides stable hydraulic power for the lifting and lowering of the hydraulic elevator car. It can adjust the oil pressure in the oil circuit in real time, buffer pressure fluctuations, ensure smooth and stable start-stop and lifting of the car, reduce vibration and impact, and at the same time improve the service life of hydraulic components and the safety and stability of elevator operation.

[0003] As the application scenarios of hydraulic elevators continue to expand and the requirements for elevator safety from intelligent operation and maintenance technologies continue to increase, the role of intelligent key mechanical components in pressure stabilizing oil supply devices is becoming increasingly prominent. The operating status of the pressure stabilizing oil supply device is directly related to the stability of the entire hydraulic elevator system, and intelligent key components are the core foundation for ensuring the reliable operation of the device. These components not only undertake basic functions such as oil circuit on / off and pressure regulation, but also integrate real-time status monitoring and fault prediction capabilities, becoming an indispensable part of the intelligent operation and maintenance system of hydraulic elevators.

[0004] The existing pressure-stabilized oil supply system consists of equipment such as hydraulic pumps and hydraulic valves. However, the hydraulic valves require regular maintenance and repair during use. The existing hydraulic valves are not convenient for collecting the hydraulic oil flowing out of the valve body during maintenance, which causes the residual hydraulic oil in the valve body to drip and flow directly onto the ground, creating a safety hazard due to the slippery ground, as well as causing oil waste and environmental pollution.

[0005] In summary, the existing technology lacks a technique for automatically receiving hydraulic fluid during the disassembly and maintenance of hydraulic valves. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a hydraulic elevator car lifting and stabilizing oil supply device.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a hydraulic elevator car lifting and stabilizing oil supply device, comprising a hydraulic valve, a mounting base fixedly installed below the hydraulic valve, a dirt-blocking component installed at the top of the mounting base, an oil receiving seat slidably fitted inside the mounting base, an oil draining rack provided on the oil receiving seat, an oil pusher plate slidably fitted inside the oil receiving seat, an oil recovery component rotatably connected to the inner wall of one end of the oil receiving seat, trapezoidal blocks fixedly connected to both sides of the inner end of the oil receiving seat, one side of the trapezoidal block slidably contacting the bottom end of the sliding rack, and the oil draining rack having an inwardly recessed structure. The oil drain rack has two symmetrically connected linkages at both ends. The bottom of each linkage is rotatably connected to the inner wall of the oil receiving seat. A worm gear is fixedly connected to one side of the bottom of each linkage. A bidirectional worm gear meshes between the two worm gears. One end of the bidirectional worm gear is rotatably connected through the inner wall of the oil receiving seat. A universal joint is fixedly connected to the outer end of the bidirectional worm gear. The universal joint is rotatably connected to the outer wall of the oil receiving seat. An adjusting wheel is fixedly connected to the other end of the universal joint. A fixed rack meshes with one side of the adjusting wheel. The fixed rack is fixedly connected to the inner wall of the bottom of the mounting base.

[0008] Preferably, the top surface of the mounting base is inclined, an annular oil guide groove is formed on the top surface of the mounting base, the bottom end of the annular oil guide groove is inclined, and an oil guide hole is formed on the inner wall of the lowest end of the annular oil guide groove.

[0009] Preferably, the dirt-blocking component includes two longitudinal baffles arranged in a symmetrical structure, and a transverse baffle is provided between the two longitudinal baffles. The bottom surfaces of both the longitudinal baffles and the transverse baffle are slidably in contact with the top opening of the annular oil guide groove. Both ends of the transverse baffle are fixedly connected to a fixing plate, and a transmission groove is provided through the fixing plate.

[0010] Preferably, a sliding frame is fixedly connected to one side of the longitudinal baffle. The bottom end of the sliding frame extends through the top of the mounting base and slides into it. Multiple springs are fixedly connected to one end of the sliding frame inside the mounting base. The other end of the springs is fixedly connected to the inner wall of the mounting base. T-shaped sliders are fixedly connected to both sides of the top of the longitudinal baffle. The outer wall of the T-shaped slider slides into the inner wall of the transmission groove.

[0011] Preferably, the oil receiving seat has an oil collecting groove on the inner wall near the bottom of the outer side, and a valve is fixedly connected through the inner wall of the bottom of the oil collecting groove. A handle is slidably fitted on the inner wall of the outer end of the oil receiving seat, and a positioning rod is fixedly connected to the lower side of both ends of the handle. The bottom end of the positioning rod passes through the inner wall of the oil receiving seat and extends downward to be inserted into the positioning hole on the inner wall of the mounting base.

[0012] Preferably, a sealing strip is fitted onto the outer wall of the oil pusher plate, and a lead screw is threaded through the middle of the oil pusher plate. One end of the lead screw is rotatably connected to the inner wall of the oil receiving seat, and a motor is fixedly connected to the outer end of the lead screw. The motor is fixedly connected to the outer wall of the oil receiving seat, and a universal joint is fixedly connected to the other end of the lead screw. The other end of the universal joint extends to the inner wall of the oil receiving seat and is fixedly connected to a transmission wheel.

[0013] Preferably, the oil recovery assembly includes a rotating ring, which is rotatably connected to the inner wall of the oil collection tank, and an annular rack is fixedly connected to the outer wall of the rotating ring, which meshes with a transmission wheel for transmission.

[0014] Preferably, an oil filter cylinder is movably inserted into the inner wall of the rotating ring, and two insert rods are fixedly connected to the lower side of the upper end of the oil filter cylinder in a symmetrical structure. Two insertion holes are symmetrically opened on the rotating ring, and the insert rods are movably inserted into the insertion holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects: By installing an oil receiving seat inside the hydraulic valve mounting base and opening an annular oil guide groove on the top of the mounting base, the hydraulic oil flowing down during the disassembly and maintenance of the hydraulic valve can be collected and treated, effectively avoiding the safety hazards, oil waste and environmental pollution caused by oil dripping onto the ground. At the same time, an oil drain rack is installed on the oil receiving seat to temporarily place and drain the oil-covered parts, reducing the risk of oil contamination on the surface of the parts, improving the safety, cleanliness and maintenance efficiency of the maintenance operation, and ensuring the reliability of the elevator's hydraulic components after maintenance. By installing an oil pusher plate inside the oil receiving seat, the oil in the oil receiving seat can be pushed to the oil recovery component. At the same time as the screw rotates and drives the oil pusher plate to move, the oil filter cylinder in the oil recovery component can rotate. This realizes the multi-functionality of oil receiving, conveying and filtering recovery, which not only improves the efficiency and automation of oil recovery, but also improves the filtration effect through the rotation of the oil filter cylinder, reduces impurity residue, facilitates the secondary use of the recovered oil, and reduces the maintenance cost of the elevator. By installing a dirt-blocking component on the mounting base, the longitudinal and transverse baffles can block the annular oil guide groove when not in use. This effectively shields the annular oil guide groove during non-maintenance periods, preventing dust and impurities from falling into the groove and causing contamination. At the same time, by installing a trapezoidal block at one end of the oil receiving base, the longitudinal and transverse baffles can be moved away when the oil receiving base is pulled out, eliminating the need for additional manual operation. This achieves automated switching between dirt-blocking and oil receiving functions, improving the convenience of elevator maintenance and the long-term reliability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 2 This is a partial cross-sectional view of the overall structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the mounting base structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 4 This is a partial unfolded schematic diagram of the dirt-blocking component structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 5 This is a partial cross-sectional schematic diagram of the oil receiving seat structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 6 This is a schematic diagram of the oil drain rack structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 7 This is a schematic diagram of the pusher plate structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention; Figure 8 This is a schematic diagram of the oil recovery component structure of a hydraulic elevator car lifting and stabilizing oil supply device according to the present invention.

[0017] The diagram shows: 1. Hydraulic valve; 2. Mounting base; 3. Sludge trap assembly; 4. Oil receiving base; 5. Oil drain rack; 6. Oil pusher plate; 7. Oil recovery assembly; 201. Annular oil guide groove; 202. Oil guide hole; 301. Longitudinal baffle; 302. Transverse baffle; 303. Fixing plate; 304. Transmission groove; 305. Sliding frame; 306. Spring; 307. T-shaped slider; 401. Trapezoidal block; 402. Oil collecting tank; 403, valve; 404, positioning rod; 501, connecting rod assembly; 502, worm gear; 503, double-acting worm; 504, universal joint one; 505, adjusting wheel; 506, fixed rack; 601, lead screw; 602, motor; 603, universal joint two; 604, transmission wheel; 701, rotating ring; 702, ring rack; 703, oil filter cartridge; 704, insertion rod; 705, insertion hole. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] like Figures 1-8The hydraulic elevator car lifting and stabilizing oil supply device shown includes a hydraulic valve 1, a mounting base 2 fixedly installed below the hydraulic valve 1, a dirt-blocking component 3 installed at the top of the mounting base 2, an oil receiving seat 4 slidably fitted inside the mounting base 2, an oil draining rack 5 installed on the oil receiving seat 4, an oil pusher plate 6 slidably fitted inside the oil receiving seat 4, an oil recovery component 7 rotatably connected to the inner wall of one end of the oil receiving seat 4, trapezoidal blocks 401 fixedly connected to both sides of the inner end of the oil receiving seat 4, one side of the trapezoidal block 401 slidably contacting the bottom end of the sliding frame 305, the oil draining rack 5 having an inwardly concave structure, and two connecting rods rotatably connected to both ends of the oil draining rack 5 having a symmetrical structure. The bottom end of the rod assembly 501 is rotatably connected to the inner wall of the oil receiving seat 4. A worm gear 502 is fixedly connected to one side of the bottom end of the rod assembly 501. A bidirectional worm 503 is meshed and driven between the two worm gears 502. One end of the bidirectional worm 503 is rotatably connected to the inner wall of the oil receiving seat 4. A universal joint 504 is fixedly connected to the outer end of the bidirectional worm 503. The universal joint 504 is rotatably connected to the outer wall of the oil receiving seat 4. An adjusting wheel 505 is fixedly connected to the other end of the universal joint 504. A fixed rack 506 is meshed and driven on one side of the adjusting wheel 505. The fixed rack 506 is fixedly connected to the inner wall of the bottom end of the mounting base 2.

[0020] like Figure 3 As shown, the top surface of the middle part of the mounting base 2 is inclined, and an annular oil guide groove 201 is provided on the top surface of the mounting base 2. The bottom end of the annular oil guide groove 201 is inclined, and an oil guide hole 202 is provided on the inner wall of the lowest end of the annular oil guide groove 201.

[0021] The oil guide hole 202 is located above the oil receiving seat 4.

[0022] like Figure 4 As shown, the dirt-blocking component 3 includes two longitudinal baffles 301 arranged in a symmetrical structure, and a transverse baffle 302 is arranged between the two longitudinal baffles 301. The bottom surfaces of both the longitudinal baffles 301 and the transverse baffle 302 are slidably contacted with the top opening of the annular oil guide groove 201. Both ends of the transverse baffle 302 are fixedly connected to a fixing plate 303, and a transmission groove 304 is provided through the fixing plate 303.

[0023] The transmission groove 304 is set with an inclined structure, so that when the longitudinal baffle 301 moves outward, it can drive the transverse baffle 302 to move accordingly.

[0024] A sliding frame 305 is fixedly connected to one side of the longitudinal baffle 301. The bottom end of the sliding frame 305 extends through the top of the mounting base 2 and slides inside it. Multiple springs 306 are fixedly connected to one side of the sliding frame 305 inside the mounting base 2. The other end of the springs 306 is fixedly connected to the inner wall of the mounting base 2. T-shaped sliders 307 are fixedly connected to both sides of the top of the longitudinal baffle 301. The outer wall of the T-shaped slider 307 slides in cooperation with the inner wall of the transmission groove 304.

[0025] The T-shaped slider 307 can both push the longitudinal baffle 301 and limit its movement.

[0026] like Figure 5 As shown, an oil collecting groove 402 is provided on the inner wall near the bottom of the outer side of the oil receiving seat 4. A valve 403 is fixedly connected through the inner wall of the bottom of the oil collecting groove 402. A handle is slidably fitted on the inner wall of the outer end of the oil receiving seat 4. A positioning rod 404 is fixedly connected to the lower side of both ends of the handle. The bottom end of the positioning rod 404 extends through the inner wall of the oil receiving seat 4 and is inserted into the positioning hole on the inner wall of the mounting base 2.

[0027] The positioning rod 404 ensures the stability of the oil receiving seat 4 when it is retracted.

[0028] The recessed oil drain rack 5 can stably hold the disassembled hydraulic valve parts, preventing them from slipping off, and at the same time, it allows residual oil on the surface of the parts to drip back into the oil receiving seat 4, reducing oil residue.

[0029] By setting an oil receiving seat 4 inside the mounting base 2 of the hydraulic valve 1 and opening an annular oil guide groove 201 on the top of the mounting base 2, the hydraulic oil flowing down during the disassembly and maintenance of the hydraulic valve 1 can be collected and treated, effectively avoiding the safety hazards, oil waste and environmental pollution caused by oil dripping onto the ground. At the same time, an oil drain rack 5 is set on the oil receiving seat 4, which can temporarily place and drain the oil-covered parts, reducing the risk of oil contamination on the surface of the parts, improving the safety, cleanliness and maintenance efficiency of the maintenance operation, and ensuring the operational reliability of the hydraulic components after maintenance.

[0030] like Figure 7 As shown, a sealing strip is fitted onto the outer wall of the oil pusher plate 6. A screw rod 601 is threaded through the middle of the oil pusher plate 6. One end of the screw rod 601 is rotatably connected to the inner wall of the oil receiving seat 4. A motor 602 is fixedly connected to the outer end of the screw rod 601. The motor 602 is fixedly connected to the outer wall of the oil receiving seat 4. A universal joint 603 is fixedly connected to the other end of the screw rod 601. The other end of the universal joint 603 extends to the inner wall of the oil receiving seat 4 and is fixedly connected to a transmission wheel 604.

[0031] The sealing strip on the outer wall of the oil pusher plate 6 ensures a tight seal between the plate and the inner wall of the oil receiving seat 4, preventing oil leakage and residue buildup during the oil pushing process, and ensuring thorough and clean oil delivery.

[0032] like Figure 8 As shown, the oil recovery assembly 7 includes a rotating ring 701, which is rotatably connected to the inner wall of the oil collection tank 402. An annular rack 702 is fixedly connected to the outer wall of the rotating ring 701, and the annular rack 702 meshes with the transmission wheel 604 for transmission.

[0033] An oil filter cartridge 703 is movably inserted into the inner wall of the rotating ring 701. Two insert rods 704 are fixedly connected to the upper and lower sides of the oil filter cartridge 703 in a symmetrical structure. Two insertion holes 705 are symmetrically opened on the rotating ring 701. The insert rods 704 are movably inserted into the insertion holes 705.

[0034] The oil filter cartridge 703 is connected to the insertion hole 705 via the insertion rod 704, allowing for quick disassembly, convenient replacement and cleaning, and simple maintenance.

[0035] Working principle: When hydraulic valve 1 needs to be disassembled and repaired, the operator manually moves upward and pulls the outer handle of the oil receiving seat 4, causing the oil receiving seat 4 to slide outward. During the movement, the inclined surfaces of the trapezoidal blocks 401 on both sides of the oil receiving seat 4 will contact and press against the sliding frame 305, causing the longitudinal baffle 301 to move outward. The T-shaped sliding head 307 at the top of the longitudinal baffle 301 slides along the inclined transmission groove 304, driving the transverse baffle 302 to move and open synchronously, automatically opening the oil receiving channel of the annular oil guide groove 201. The residual oil dripping during the disassembly of hydraulic valve 1 falls into the annular oil guide groove 201 and drips precisely into the inside of the oil receiving seat 4 through the oil guide hole 202, achieving centralized collection of leaked oil.

[0036] As the oil receiving seat 4 is pulled outwards and the oil drain rack 5 is completely removed, the adjusting wheel 505 rotates along the fixed rack 506, driving the bidirectional worm gear 503 to rotate via the universal joint 504. This drives the worm wheels 502 on both sides to rotate synchronously, causing the connecting rod assembly 501 to swing and automatically lift the oil drain rack 5. Disassembled parts can be placed directly on the inwardly recessed oil drain rack 5. Residual oil on the surface of the parts naturally drips back into the oil receiving seat 4, effectively removing oil and impurities from the parts' surface and preventing impurities from entering the hydraulic circuit after reassembly, ensuring stable pressure and oil supply to the elevator. After maintenance, the oil receiving seat 4 resets, and the oil drain rack 5 automatically folds and stores, resulting in a compact structure that saves space.

[0037] After the oil draining and residual oil collection of the parts are completed, the starter motor 602 drives the lead screw 601 to rotate at a constant speed. The threaded drive of the lead screw 601 pushes the oil pusher plate 6 to slide smoothly along the inner wall of the oil receiving seat 4, directionally pushing the collected hydraulic residual oil to the oil collection tank 402. At the same time, the rotation of the lead screw 601 drives the transmission wheel 604 to rotate synchronously through the universal joint 603. The transmission wheel 604 meshes with and drives the ring rack 702 and the rotating ring 701 to rotate at a constant speed, causing the fixed filter cylinder 703 to rotate synchronously. All the oil pushed to the oil collection tank 402 flows through the rotating filter cylinder 703. The rotational filtration effectively avoids the accumulation of impurities and clogging of the screen, expands the oil filtration contact area, greatly improves the filtration and purification effect, and completely intercepts impurities and dirt in the oil. The clean hydraulic oil after filtration and purification can be discharged through the valve 403 for reuse, effectively reducing equipment operation and maintenance costs.

[0038] After maintenance and oil recovery operations are completed, push the oil receiving seat 4 inward to reset it. The trapezoidal block 401 disengages from the squeezing limit of the sliding frame 305, and the spring 306 returns to its original position, causing the dirt-blocking component 3 to automatically close and seal the oil guide groove. At the same time, press the handle to insert the positioning rod 404 into the positioning hole of the mounting base 2, thus fixing the oil receiving seat 4 and preventing it from slipping or loosening during equipment operation.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A hydraulic elevator car lifting and stabilizing oil supply device, comprising a hydraulic valve (1), characterized in that: A mounting base (2) is fixedly installed below the hydraulic valve (1). A dirt-blocking component (3) is installed at the top of the mounting base (2). An oil receiving seat (4) is slidably fitted inside the mounting base (2). An oil draining rack (5) is installed on the oil receiving seat (4). An oil pusher plate (6) is slidably fitted inside the oil receiving seat (4). An oil recovery component (7) is rotatably connected to the inner wall of one end of the oil receiving seat (4). Trapezoidal blocks (401) are fixedly connected to both sides of the inner end of the oil receiving seat (4). One side of the trapezoidal block (401) is slidably contacted with the bottom end of the sliding frame (305). The oil draining rack (5) has a concave structure. Two connecting rod groups (501) are rotatably connected to both ends of the oil draining rack (5) in a symmetrical structure. 501) The bottom end of the connecting rod assembly (501) is rotatably connected to the inner wall of the oil receiving seat (4). A worm gear (502) is fixedly connected to one side of the bottom end of the connecting rod assembly (501). A bidirectional worm (503) is meshed and driven between the two worm gears (502). One end of the bidirectional worm (503) is rotatably connected to the inner wall of the oil receiving seat (4). A universal joint (504) is fixedly connected to the outer end of the bidirectional worm (503). The universal joint (504) is rotatably connected to the outer wall of the oil receiving seat (4). An adjusting wheel (505) is fixedly connected to the other end of the universal joint (504). A fixed rack (506) is meshed and driven on one side of the adjusting wheel (505). The fixed rack (506) is fixedly connected to the inner wall of the bottom end of the mounting base (2). The oil receiving seat (4) has an oil collection groove (402) on the inner wall near the bottom of the outer side. A valve (403) is fixedly connected through the inner wall of the bottom of the oil collection groove (402). A handle is slidably fitted on the inner wall of the outer end of the oil receiving seat (4). A positioning rod (404) is fixedly connected to the lower side of both ends of the handle. The bottom end of the positioning rod (404) extends through the inner wall of the oil receiving seat (4) and is inserted into the positioning hole on the inner wall of the mounting base (2). A sealing strip is fitted on the outer wall of the oil pusher plate (6). A screw rod (601) is threaded through the middle of the oil pusher plate (6). One end of the screw rod (601) is rotatably connected through the inner wall of the oil receiving seat (4). A motor (602) is fixedly connected to the outer end of the screw rod (601). 02) The screw (601) is fixedly connected to the outer wall of the oil receiving seat (4). The other end of the screw (601) is fixedly connected to a universal joint (603). The other end of the universal joint (603) extends to the inner wall of the oil receiving seat (4) and is fixedly connected to a transmission wheel (604). The oil recovery assembly (7) includes a rotating ring (701). The rotating ring (701) is rotatably connected to the inner wall of the oil collection tank (402). The outer wall of the rotating ring (701) is fixedly connected to an annular rack (702). The annular rack (702) meshes with the transmission wheel (604) for transmission. The inner wall of the rotating ring (701) is movably inserted with an oil filter cylinder (703). The upper end of the oil filter cylinder (703) has two insert rods (704) fixedly connected to it in a symmetrical structure on the lower side.The rotating ring (701) has two symmetrically arranged insertion holes (705), and the insertion rod (704) is movably inserted into the insertion holes (705).

2. The hydraulic elevator car lifting and stabilizing oil supply device according to claim 1, characterized in that: The mounting base (2) has an inclined top surface in the middle, and an annular oil guide groove (201) is provided on the top surface of the mounting base (2). The bottom end of the annular oil guide groove (201) has an inclined structure, and an oil guide hole (202) is provided on the inner wall of the lowest end of the annular oil guide groove (201).

3. The hydraulic elevator car lifting and stabilizing oil supply device according to claim 2, characterized in that: The dirt-blocking component (3) includes two longitudinal baffles (301) arranged in a symmetrical structure, and a transverse baffle (302) is provided between the two longitudinal baffles (301). The bottom surfaces of the longitudinal baffles (301) and the transverse baffles (302) are slidably contacted with the top opening of the annular oil guide groove (201). Both ends of the transverse baffles (302) are fixedly connected to fixing plates (303), and a transmission groove (304) is provided through the fixing plate (303).

4. The hydraulic elevator car lifting and stabilizing oil supply device according to claim 3, characterized in that: A sliding frame (305) is fixedly connected to one side of the longitudinal baffle (301). The bottom end of the sliding frame (305) extends through the top of the mounting base (2) and slides into it. A plurality of springs (306) are fixedly connected to one side of the sliding frame (305) inside the mounting base (2). The other end of the springs (306) is fixedly connected to the inner wall of the mounting base (2). T-shaped sliders (307) are fixedly connected to both sides of the top of the longitudinal baffle (301). The outer wall of the T-shaped slider (307) slides into the inner wall of the transmission groove (304).

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