Safety protection device for adding elevator without foundation pit

Abstract

The invention discloses a safety protection device for a foundation-pit-free added elevator, and belongs to the technical field of added elevators, the safety protection device comprises a main body module, the main body module comprises a mounting frame, the interior of the mounting frame is movably connected with an elevator car, and lifting equipment is arranged between the top of the elevator car and the top of the inner wall of the mounting frame; mounting plates are fixedly connected to the two sides of the inner wall of the mounting frame correspondingly, double-face toothed plates are fixedly connected to the adjacent faces of the two mounting plates correspondingly, through arrangement of a connecting gear, a centrifugal assembly, a linkage assembly and a limiting rail, when an elevator falls, braking can be conducted through centrifugal force, and the safety of the elevator is improved. Compared with existing safety tongs, centrifugal force braking can sense the speed change in the first time, response is almost instant, delay is avoided, the elevator is stopped faster, the accident risk is reduced, the structure is simple, maintenance is convenient, and therefore the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of installing elevators, and more specifically, to a safety protection device for installing elevators without a foundation pit. Background Art

[0002] Installing an elevator usually refers to adding and installing elevator equipment in an existing building through certain technologies and construction methods. It is currently more common in relatively old residential areas. Since old residential areas are usually staircase buildings, elevators are installed in buildings with higher floors to improve the vertical transportation convenience of residents in the building, especially to facilitate the elderly, disabled people and other people with mobility difficulties to go up and down the stairs, thereby improving the convenience of residents' lives.

[0003] According to the search, the patent with patent number CN110510478A discloses an elevator installed without a foundation pit, including a gantry, and derrick tracks are arranged on the inner walls on the left and right sides of the gantry. A car is movably arranged in the inner cavity of the gantry, and the left outer wall of the car is connected to the safety clamp and the guide rail, and the left and right outer walls of the car are provided with buffer collision irons, a buffer device is arranged at the bottom of the inner cavity of the gantry, a tensioning device is arranged on the left inner wall of the gantry, and the top of the tensioning device is connected to a speed limiter, the top of the car is connected to a movable guide wheel on the top of the car, and the outer wall of the movable guide wheel on the top of the car is wound with a wire rope, a weighing device is arranged on the top of the inner cavity of the gantry, and the other end of the wire rope is connected to a traction machine, and a guide wheel is arranged on the top right side of the gantry, which reduces the footprint. At the same time, the buffer device can ensure the stability of the elevator when it lands, which is more stable and safe, and at the same time extends the service life of the elevator.

[0004] In view of the above-mentioned related technologies, when the elevator is in use, if a malfunction occurs, it is easy to fall. In order to ensure the safety of passengers, the existing elevators are equipped with safety clamps for braking. At present, the safety clamp system includes multiple components such as speed limiter, wire rope, and pulling mechanism, and the structure is complex. The complex structure means higher maintenance cost and difficulty. In addition, the traditional safety clamp requires the speed limiter to act first, and then be triggered through a complex mechanical connection, which has a certain delay. In the scenario of the elevator falling, any delay will affect the safety of the passengers. For this reason, a safety protection device for an elevator without a foundation pit is proposed. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a safety protection device for an elevator installed without a foundation pit, which adopts the following technical solutions:

[0006] A safety protection device for installing an elevator without a foundation pit comprises a main body module, the main body module comprises a mounting frame, an elevator car is movably connected inside the mounting frame, a lifting device is arranged between the top of the elevator car and the top of the inner wall of the mounting frame, mounting plates are fixedly connected on both sides of the inner wall of the mounting frame, two adjacent sides of the two mounting plates are fixedly connected with double-sided tooth plates, four centrifugal modules are arranged on the top and bottom of the elevator car, two limit rails are fixedly connected on both sides of the inner wall of the mounting frame, every two centrifugal modules are movably connected to the inside of one of the limit rails, and Two alarm modules, four of which are close to the top of the elevator car, and are respectively connected to four of the centrifugal modules. Each of the four centrifugal modules is respectively meshed with the outer surface of one of the double-sided tooth plates. The centrifugal module includes a mounting seat arranged on the top of the elevator car, and the interior of the mounting seat is rotatably connected with an inner rotating rod, and the outer surface of the inner rotating rod is fixedly connected with a connecting gear, and the outer surface of the connecting gear is meshed with one of the double-sided tooth plates. A centrifugal assembly is arranged between one end of the inner rotating rod and the inside of one of the limit rails, and a linkage assembly is arranged on the centrifugal assembly, and the alarm module is connected to the linkage assembly.

[0007] Furthermore, the centrifugal assembly includes a centrifugal disk fixedly connected to one end of the inner rotating rod, the outer surface of the centrifugal disk is rotatably connected to a rolling ring, one side of the rolling ring is fixedly connected to a limiting block, the limiting block is slidably connected to the inside of one of the limiting rails, and a stop groove is opened inside the rolling ring.

[0008] Furthermore, the centrifugal assembly also includes a plurality of movable grooves that are all opened on the outer surface of the centrifugal disk, the interiors of the plurality of movable grooves are movably connected with stop blocks, the outer surfaces of the plurality of stop blocks are fixedly connected with metal rods, and springs are fixedly connected between the plurality of stop blocks and the inner walls of the plurality of movable grooves, and the springs are located outside the metal rods.

[0009] Furthermore, the centrifugal assembly also includes a plurality of magnetic blocks fixedly connected to the inner wall of the movable groove, and the plurality of magnetic blocks are magnetically connected to the plurality of metal rods respectively.

[0010] Furthermore, the linkage assembly includes a plurality of fixed through grooves which are all opened on one side of the centrifugal disk, the plurality of through grooves are respectively connected with the plurality of movable grooves, the outer surface of the inner rotating rod is movably sleeved with a displacement ring, the outer surface of the displacement ring is hinged with a plurality of connecting rods, and one end of the plurality of connecting rods is respectively hinged with the outer surface of a plurality of stop blocks through the plurality of through grooves.

[0011] Furthermore, the centrifugal module also includes two mounting plates fixedly connected to the front end surface and the rear end surface of the mounting seat, and a plurality of bolts are threadedly connected between the two mounting plates and the top of the elevator car.

[0012] Furthermore, the alarm module includes an alarm and a battery fixedly connected to one side of the elevator car, the battery and the alarm are both connected to a power board, one side of the mounting frame is fixedly connected to a limit column, the outer surface of the limit column is movably sleeved with a power board, and the power board is located between the two power boards.

[0013] Furthermore, the alarm module also includes a sleeve ring rotatably connected to one side of the displacement ring, an outer surface of the sleeve ring is fixedly connected to an L-shaped rod, and one end of the L-shaped rod is fixedly connected to the power-on plate.

[0014] Furthermore, the main module also includes four buffer assemblies, which are all arranged at the bottom of the elevator car. The four buffer assemblies are respectively located at four angles of the bottom of the elevator car. The buffer assembly includes an air cylinder fixedly connected to the bottom of the elevator car, a pressure relief valve is fixedly connected to the outer surface of the air cylinder, a movable rod is movably connected to the inside of the air cylinder, the bottom end of the movable rod extends to the outside of the air cylinder, and the bottom end of the movable rod is fixedly connected to a force block.

[0015] In summary, the present invention includes the following beneficial technical effects:

[0016] (1) The present invention connects gears, centrifugal components, linkage components and limit rails, so that when the elevator falls, it can be braked by centrifugal force, so that the elevator can only be pulled upward for rescue and cannot fall. Compared with the existing safety clamps, centrifugal force braking can sense speed changes in the first time, respond almost instantly, avoid delays, stop the elevator faster, reduce the risk of accidents, and has a simple structure and is easy to maintain, thereby reducing maintenance costs;

[0017] (2) The present invention provides a storage battery, an alarm, a power board, an L-shaped rod and a power board, so that when the elevator car brakes, the alarm will automatically turn on to give an audible and visual alarm, thereby realizing automatic alarm. The storage battery can be used to give an alarm in the event of a power outage, further improving overall safety.

[0018] (3) The present invention provides an air cylinder, a movable rod, a force block and a pressure relief valve. When the falling height is low, the buffer assembly contacts the ground for buffering, thereby achieving a certain buffering effect, reducing the damage to the passengers and further protecting the safety of the passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the framework of the present invention;

[0021] Figure 3It is a structural schematic diagram of the centrifugal module of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the alarm module of the present invention;

[0023] Figure 5 It is a schematic diagram of the position of the set ring of the present invention;

[0024] Figure 6 It is a schematic cross-sectional structural diagram of the centrifugal disk of the present invention;

[0025] Figure 7 For the present invention Figure 6 A is an enlarged structural diagram;

[0026] Figure 8 It is a bottom view structural schematic diagram of the present invention;

[0027] Fig. 9 It is a schematic cross-sectional structural diagram of the buffer assembly of the present invention.

[0028] Description of the numbers in the figure:

[0029] 100, main body module; 110, mounting frame; 120, elevator car; 130, lifting device; 140, mounting plate; 150, buffer assembly; 151, air cylinder; 152, movable rod; 153, force block; 154, pressure relief valve;

[0030] 200, double-sided tooth plate;

[0031] 300, centrifugal module; 310, mounting seat; 320, inner rotating rod; 330, connecting gear; 340, centrifugal assembly; 341, centrifugal disc; 342, rolling ring; 343, limit block; 344, stop groove; 345, movable groove; 346, stop block; 347, metal rod; 348, spring; 349, magnetic block; 350, linkage assembly; 351, through groove; 352, displacement ring; 353, connecting rod; 360, mounting plate; 370, bolt;

[0032] 400, alarm module; 410, battery; 420, alarm; 430, power board; 440, L-shaped rod; 450, power board; 460, limit column; 470, set ring;

[0033] 500, limit rail. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following is combined with Figure 1-9 The present invention is described in further detail.

[0038] See also Figure 1-9A safety protection device for installing an elevator without a foundation pit includes a main body module 100, the main body module 100 includes a mounting frame 110, an elevator car 120 is movably connected inside the mounting frame 110, a lifting device 130 is arranged between the top of the elevator car 120 and the top of the inner wall of the mounting frame 110, mounting plates 140 are fixedly connected to both sides of the inner wall of the mounting frame 110, and double-sided tooth plates 200 are fixedly connected to the adjacent sides of the two mounting plates 140, four centrifugal modules 300 are arranged on the top and bottom of the elevator car 120, two limit rails 500 are fixedly connected to both sides of the inner wall of the mounting frame 110, every two centrifugal modules 300 are movably connected to the inside of one of the limit rails 500, and two alarm modules are arranged on both sides of the elevator car 120 Block 400, four alarm modules 400 are all close to the top of the elevator car 120, the four alarm modules 400 are respectively connected to four of the centrifugal modules 300, each of the four centrifugal modules 300 is respectively meshed with the outer surface of one of the double-sided tooth plates 200, the centrifugal module 300 includes a mounting seat 310 arranged on the top of the elevator car 120, the inner rotation connection of the mounting seat 310 is connected to the inner rotation rod 320, the outer surface of the inner rotation rod 320 is fixedly connected to the connecting gear 330, the outer surface of the connecting gear 330 is meshed with one of the double-sided tooth plates 200, a centrifugal assembly 340 is arranged between one end of the inner rotation rod 320 and the inside of one of the limit rails 500, a linkage assembly 350 is arranged on the centrifugal assembly 340, and the alarm module 400 is connected to the linkage assembly 350.

[0039] When in use, the elevator car 120 is driven to be lifted and lowered by the lifting device 130. At this time, the centrifugal assembly 340 will slide inside the limit rail 500, and the connecting gear 330 will be driven to rotate by the double-sided tooth plate 200, and the inner rotating rod 320 will be driven to rotate by the connecting gear 330. This state does not affect the normal lifting and lowering of the elevator car 120. When the elevator car 120 falls, the inner rotating rod 320 will be driven by the double-sided tooth plate 200 to rotate rapidly. The rapid rotation of the inner rotating rod 320 will generate centrifugal force, which will drive the centrifugal assembly 340 to open quickly, so that the centrifugal assembly 340 is locked, thereby braking the elevator car 120 to prevent the rapid fall from causing harm to the passengers, and when the centrifugal assembly 340 is braked, it will drive the linkage assembly 350 to move, and the linkage assembly 350 will be connected to the alarm module 400, and the alarm module 400 will sound and light alarm.

[0040] The centrifugal assembly 340 includes a centrifugal disc 341 fixedly connected to one end of the inner rotating rod 320, the outer surface of the centrifugal disc 341 is rotatably connected to a rolling ring 342, one side of the rolling ring 342 is fixedly connected to a limiting block 343, the limiting block 343 is slidably connected to the inside of one of the limiting rails 500, and a stop groove 344 is provided inside the rolling ring 342. The centrifugal assembly 340 also includes a plurality of movable grooves 345, all of which are provided on the outer surface of the centrifugal disc 341, and the interiors of the plurality of movable grooves 345 are all movably connected to stop blocks 346, and the outer surfaces of the plurality of stop blocks 346 are all fixedly connected to metal rods 347, and springs 348 are fixedly connected between the plurality of stop blocks 346 and the inner walls of the plurality of movable grooves 345, and the springs 348 are located outside the metal rods 347. The centrifugal assembly 340 It also includes multiple magnetic blocks 349 that are fixedly connected to the inner wall of the movable groove 345, and the multiple magnetic blocks 349 are magnetically connected to the multiple metal rods 347 respectively. The linkage assembly 350 includes multiple through grooves 351 fixedly opened on one side of the centrifugal disk 341, and the multiple through grooves 351 are respectively connected to the multiple movable grooves 345. The outer surface of the inner rotating rod 320 is movably sleeved with a displacement ring 352, and the outer surface of the displacement ring 352 is hinged with multiple connecting rods 353. One ends of the multiple connecting rods 353 are hinged to the outer surfaces of the multiple stop blocks 346 through the multiple through grooves 351 respectively. The centrifugal module 300 also includes two mounting plates 360 fixedly connected to the front end face and the rear end face of the mounting seat 310, and multiple bolts 370 are threadedly connected between the two mounting plates 360 and the top of the elevator car 120.

[0041] When the elevator car 120 falls, the inner rotating rod 320 will be driven by the double-sided tooth plate 200 to rotate rapidly, and the centrifugal disk 341 will rotate rapidly at this time. The rapid rotation of the centrifugal disk 341 will generate centrifugal force, and the centrifugal force will throw off the stop block 346. At this time, the metal rod 347 is separated from the magnetic block 349, and the spring 348 pushes the stop block 346 to be stuck in the stop groove 344, so that the multiple stop blocks 346 are quickly opened to restrict the centrifugal disk 341 from rotating inside the rolling ring 342, so that the connecting gear 330 cannot roll downward on the double-sided tooth plate 200, and can only roll upward, thereby braking the elevator car 120 to prevent the rapid fall from causing harm to the passengers.

[0042] The alarm module 400 includes an alarm 420 and a battery 410 fixedly connected to one side of the elevator car 120, and a power board 430 is connected to both the battery 410 and the alarm 420. A limiting column 460 is fixedly connected to one side of the mounting frame 110, and a power-on plate 450 is movably sleeved on the outer surface of the limiting column 460. The power-on plate 450 is located between the two power-on plates 430. The alarm module 400 also includes a set ring 470 rotatably connected to one side of the displacement ring 352, and an L-shaped rod 440 is fixedly connected to the outer surface of the set ring 470, and one end of the L-shaped rod 440 is fixedly connected to the power-on plate 450.

[0043] When the displacement ring 352 moves, it will drive the set ring 470 and the L-shaped rod 440 to move. The movement of the L-shaped rod 440 will drive the power-on plate 450 to move and contact the two power connection plates 430. The battery 410 will power the alarm 420 through the two power connection plates 430 and the power-on plate 450. The alarm 420 will give out sound and light alarms, thereby realizing automatic alarm.

[0044] The main module 100 also includes four buffer assemblies 150, which are all arranged at the bottom of the elevator car 120. The four buffer assemblies 150 are respectively located at four angles at the bottom of the elevator car 120. The buffer assembly 150 includes an air cylinder 151 fixedly connected to the bottom of the elevator car 120. The outer surface of the air cylinder 151 is fixedly connected to a pressure relief valve 154. The interior of the air cylinder 151 is movably connected to a movable rod 152. The bottom end of the movable rod 152 extends to the outside of the air cylinder 151. The bottom end of the movable rod 152 is fixedly connected to a force block 153.

[0045] The centrifugal force is not enough to open the centrifugal assembly 340, the force block 153 will first contact the ground, the movable rod 152 will move to compress the air inside the air cylinder 151, and when the air pressure inside the air cylinder 151 reaches a certain level, the pressure relief valve 154 will release the pressure, thereby achieving a certain buffering effect and protecting the safety of passengers.

[0046] The implementation principle of the embodiment of the present invention is: when in use, the elevator car 120 is driven to be lifted and lowered by the lifting device 130. At this time, the limit block 343 will slide inside the limit rail 500, and the connecting gear 330 will be driven to rotate by the double-sided tooth plate 200, and the inner rotating rod 320 will be driven to rotate by the connecting gear 330. At this time, the inner rotating rod 320 drives the centrifugal disk 341 to rotate inside the rolling ring 342. This state does not affect the normal lifting and lowering of the elevator car 120. When the elevator car 120 falls, the inner rotating rod 320 will be driven by the double-sided tooth plate 200 to rotate rapidly, and the centrifugal disk 341 will follow at this time. The centrifugal disc 341 rotates rapidly and generates centrifugal force, which throws off the anti-return block 346. At this time, the metal rod 347 is separated from the magnetic block 349, and the spring 348 pushes the anti-return block 346 to be stuck in the anti-return groove 344, so that the multiple anti-return blocks 346 are quickly opened to restrict the centrifugal disc 341 from rotating inside the rolling ring 342, so that the connecting gear 330 cannot roll downward on the double-sided tooth plate 200, but can only roll upward, thereby braking the elevator car 120 to prevent the rapid fall from causing harm to the passengers. When the staff finds an elevator accident, they can pull the elevator car 120 upward. At this time, the anti-return block 346 will be The movable groove 345 moves inside, the centrifugal disc 341 rotates inside the rolling ring 342, the limit block 343 slides upward inside the limit rail 500, and the connecting gear 330 rolls upward on the outer surface of the double-sided tooth plate 200. When the elevator car 120 moves to the elevator entrance of the nearest level, the trapped personnel will be rescued, and when the stop block 346 pops open, it will pull the connecting rod 353, and the connecting rod 353 will drive the displacement ring 352 to move. When the displacement ring 352 moves, it will drive the set ring 470 and the L-shaped rod 440 to move. The movement of the L-shaped rod 440 will drive the power-on plate 450 to move and contact the two power-on plates 430, and the battery 41 0 will power the alarm 420 through two power boards 430 and the power board 450, and the alarm 420 will give an audible and visual alarm, thereby realizing automatic alarm. The battery 410 can give an alarm in the event of a power outage, further improving the overall safety. When the elevator car 120 falls, if the height is not high, the centrifugal force is not enough to open the centrifugal assembly 340, the force block 153 will first contact the ground, and the movable rod 152 will move to compress the air inside the air cylinder 151. When the air pressure inside the air cylinder 151 reaches a certain level, the pressure relief valve 154 will release the pressure, thereby achieving a certain buffer effect and protecting the safety of passengers.

[0047] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator safety protection device installed without a foundation pit, comprising a main module (100), characterized in that: The main body module (100) comprises a mounting frame (110), an elevator car (120) is movably connected to the interior of the mounting frame (110), a lifting device (130) is arranged between the top of the elevator car (120) and the top of the inner wall of the mounting frame (110), mounting plates (140) are fixedly connected to both sides of the inner wall of the mounting frame (110), and double-sided tooth plates (200) are fixedly connected to the adjacent sides of the two mounting plates (140), four centrifugal modules (300) are arranged on the top and bottom of the elevator car (120), and the Two limit rails (500) are fixedly connected to both sides of the inner wall of the installation frame (110), and each two centrifugal modules (300) are movably connected to the inside of one of the limit rails (500). Two alarm modules (400) are arranged on both sides of the elevator car (120), and the four alarm modules (400) are close to the top of the elevator car (120). The four alarm modules (400) are respectively connected to four of the centrifugal modules (300), and each four of the centrifugal modules (300) are respectively meshed with the outer surface of one of the double-sided tooth plates (200); The centrifugal module (300) comprises a mounting seat (310) arranged on the top of the elevator car (120); the interior of the mounting seat (310) is rotatably connected to an inner rotating rod (320); the outer surface of the inner rotating rod (320) is fixedly connected to a connecting gear (330); the outer surface of the connecting gear (330) is meshed with one of the double-sided toothed plates (200); a centrifugal assembly (340) is arranged between one end of the inner rotating rod (320) and the interior of one of the limit rails (500); a linkage assembly (350) is arranged on the centrifugal assembly (340); and the alarm module (400) is connected to the linkage assembly (350).

2. The elevator safety protection device without foundation pit according to claim 1 is characterized by: The centrifugal assembly (340) comprises a centrifugal disc (341) fixedly connected to one end of the inner rotating rod (320); the outer surface of the centrifugal disc (341) is rotatably connected to a rolling ring (342); one side of the rolling ring (342) is fixedly connected to a limiting block (343); the limiting block (343) is slidably connected to the inside of one of the limiting rails (500); and a stop groove (344) is provided inside the rolling ring (342).

3. The elevator safety protection device without foundation pit according to claim 2 is characterized by: The centrifugal assembly (340) further comprises a plurality of movable grooves (345) which are all provided on the outer surface of the centrifugal disc (341); the interiors of the plurality of movable grooves (345) are movably connected with stop blocks (346); the outer surfaces of the plurality of stop blocks (346) are all fixedly connected with metal rods (347); springs (348) are fixedly connected between the plurality of stop blocks (346) and the inner walls of the plurality of movable grooves (345); and the springs (348) are located outside the metal rods (347).

4. The elevator safety protection device for installation without foundation pit according to claim 3 is characterized by: The centrifugal assembly (340) further comprises a plurality of magnetic blocks (349) which are fixedly connected to the inner wall of the movable groove (345), and the plurality of magnetic blocks (349) are magnetically connected to the plurality of metal rods (347) respectively.

5. The elevator safety protection device for installation without foundation pit according to claim 4 is characterized by: The linkage assembly (350) comprises a plurality of fixed through slots (351) each provided on one side of the centrifugal disc (341); the plurality of through slots (351) are respectively connected to the plurality of movable slots (345); a displacement ring (352) is movably sleeved on the outer surface of the inner rotating rod (320); a plurality of connecting rods (353) are hingedly connected to the outer surface of the displacement ring (352); one end of the plurality of connecting rods (353) is respectively hingedly connected to the outer surfaces of the plurality of stop blocks (346) through the plurality of through slots (351).

6. The elevator safety protection device for installation without foundation pit according to claim 5 is characterized by: The centrifugal module (300) further comprises two mounting plates (360) fixedly connected to the front and rear surfaces of the mounting seat (310), and a plurality of bolts (370) are threadedly connected between the two mounting plates (360) and the top of the elevator car (120).

7. The elevator safety protection device for installation without foundation pit according to claim 6 is characterized by: The alarm module (400) comprises an alarm (420) and a battery (410) fixedly connected to one side of the elevator car (120); the battery (410) and the alarm (420) are both connected to a power connection board (430); a limiting column (460) is fixedly connected to one side of the mounting frame (110); a power supply board (450) is movably sleeved on the outer surface of the limiting column (460); and the power supply board (450) is located between two power connection boards (430).

8. The elevator safety protection device for installation without foundation pit according to claim 7 is characterized by: The alarm module (400) further comprises a sleeve ring (470) rotatably connected to one side of the displacement ring (352), an L-shaped rod (440) being fixedly connected to the outer surface of the sleeve ring (470), and one end of the L-shaped rod (440) being fixedly connected to the power supply plate (450).

9. The elevator safety protection device for installation without foundation pit according to claim 8 is characterized by: The main body module (100) further comprises four buffer assemblies (150) which are all arranged at the bottom of the elevator car (120), the four buffer assemblies (150) being respectively located at four angles at the bottom of the elevator car (120), the buffer assembly (150) comprising an air cylinder (151) fixedly connected to the bottom of the elevator car (120), a pressure relief valve (154) being fixedly connected to the outer surface of the air cylinder (151), a movable rod (152) being movably connected inside the air cylinder (151), the bottom end of the movable rod (152) extending to the outside of the air cylinder (151), and a force bearing block (153) being fixedly connected to the bottom end of the movable rod (152).

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