Safety protection device for elevator guide rail

Abstract

The invention discloses a safety protection device for an elevator guide rail, and relates to the technical field of elevator guide rails, the safety protection device for the elevator guide rail comprises a guide rail, an elevator transmission block is slidably mounted on the surface of the guide rail, a long plate is in bolted connection with the front part of the guide rail, and a fixed plate is in bolted connection with the rear part of the guide rail; a fastening device is arranged on the surface of the guide rail; the left side and the right side of an elevator transmission block make contact with the circumferential faces of the rolling wheels, so that the rolling wheels rotate, a moving box moves in the opposite direction, the rolling wheels rotate to enable a rotating shaft to rotate, the moving box moves to drive a slope block to move, and the slope block moves to make contact with the slope of a rack and continues to move to push the rack to move upwards; the slope block continues to move to enable the mounting box to move, the mounting box moves to drive the rack to move, the rack moves to make contact with teeth of the gear, the gear is made to rotate, the nut is screwed down by rotating the gear, and therefore bolt connection is firmer.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator guide rails, in particular to a safety protection device for elevator guide rails. Background Art

[0002] Elevator guide rails are vital components in the elevator system, responsible for guiding the vertical movement of the elevator car and counterweight to ensure smooth and safe operation.

[0003] The patent with the patent announcement number CN207698962U relates to an elevator safety guide rail assembly, including a slide, a guide shoe, a blind hole, an electric push rod 1, a brake block, a fixed seat, a moving seat, an electric push rod 2 and a bracket. The guide shoe is assembled inside the slide, the blind hole is opened at the left end of the guide shoe, the electric push rod 1 is installed at the right end inside the blind hole, the left end of the electric push rod 1 is connected with a brake block, and the brake block is assembled at the left end inside the blind hole. This design realizes the emergency braking function of the device. The front end face and the rear end face of the guide rail body are fixed with a fixed seat, the moving seat is assembled inside the fixed seat, the right end of the electric push rod 2 is connected to the left side of the moving seat, the left end of the electric push rod 2 is connected to the left end inside the bracket, and the bracket is fixed to the left side of the fixed seat. This design realizes the emergency stop function of the device. The patent has a simple structure, high safety and good stability. In the above patent, the emergency stop function of the device is realized. The patent has a simple structure, high safety and good stability. However, as the equipment is used for a long time, the bolts will loosen due to long-term friction, which will make the bolt connection loose. Loose bolt connection will make the connection of the guide rail unstable, thereby creating a safety hazard. When the guide rail is used for a long time, a gap will be generated between the guide rail and the wall. The gap between the guide rail and the wall will make the elevator run unstable and easily cause danger. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a safety protection device for elevator guide rails, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a safety protection device for an elevator guide rail, comprising a guide rail, an elevator transmission block is slidably installed on the surface of the guide rail, a long plate is bolted to the front of the guide rail, a fixing plate is bolted to the rear of the guide rail, a fastening device is arranged on the surface of the guide rail, a brake device is arranged on the surface of the guide rail, and an alarm device is arranged on the surface of the guide rail; The fastening device includes a moving box, a roller, a ramp block, an installation box, a rack, a gear, a disassembly plate, a rotating shaft, a limit block and a pawl. A sliding groove is provided at the front of the long plate, the installation box is arranged inside the sliding groove, the rack is arranged inside the installation box, the ramp block slides through the installation box, the moving box is fixedly installed on the left part of the ramp block, the roller is rotatably installed inside the moving box, the gear is fixedly installed on the surface of the nut, a mounting groove is provided on the right side of the long plate, the disassembly plate is slidably installed inside the mounting groove, the rotating shaft is rotatably installed on the front of the disassembly plate, the pawl is fixedly installed on the circumferential surface of the rotating shaft, a sliding groove is provided at the front of the disassembly plate, the limit block is slidably installed inside the sliding groove, and a limiting groove is provided on the circumferential surface of the rotating shaft.

[0006] According to the above technical scheme, the brake device includes a driving box, a movable plate, a moving rod, a brake pad, a limiting rod, a sliding plate, a bent rod, a long rod, a short plate and a rotating plate, the long rod slides through the bottom of the moving box, the short plate is fixedly installed on the side of the long rod close to the roller, the front part of the roller is fixedly installed with a rotating shaft, the rotating plate is fixedly installed on the circumferential surface of the rotating shaft, the bent rod is fixedly installed on the bottom of the long rod, the driving box is fixedly installed on the left side of the long plate, the movable plate is arranged inside the driving box, the moving rod is fixedly installed on the left side of the movable plate, the moving rod slides through the left side of the driving box, the brake pad is fixedly installed on the left side of the moving rod, a positioning groove is opened inside the driving box, the sliding plate is slidably installed in the positioning groove, and the limiting rod is fixedly installed at the bottom of the sliding plate. By arranging the brake device, the elevator can be decelerated and braked when the running speed of the elevator is abnormal.

[0007] According to the above technical scheme, the alarm device includes a positioning box, a force plate, an extension rod, an oblique block, a short rod, a mounting plate, a copper sheet, a collision plate, a rotating shaft, a baffle and a telescopic block. The positioning box is fixedly installed on the front part of the long plate, the force plate is arranged inside the positioning box, the extension rod is fixedly installed on the rear part of the force plate, the extension rod slides through the positioning box, the long plate, the guide rail and the fixed plate, the oblique block is fixedly installed on the circumferential surface of the extension rod, the short rod slides through the left side of the positioning box, the baffle is fixedly installed on the circumferential surface of the short rod, the circumferential surface of the short rod is provided with a groove, the telescopic block is slidably installed in the groove, the mounting plate is fixedly installed on the left side of the short rod, the copper sheet is fixedly installed on the left side of the mounting plate, and the collision plate is fixedly installed on the rotating shaft. By setting the alarm device, an alarm sound is emitted when a gap is generated between the guide rail and the wall and the gap is too large, thereby reminding the staff to perform maintenance.

[0008] According to the above technical solution, the inclined plane block is fixedly installed on the right side of the moving box, the inclined plane block slides through the installation box, and a No. 1 spring is fixedly installed between the moving box and the installation box. By setting the No. 1 spring, the inclined plane block and other structures can be reset when the elevator transmission block is not in contact with the roller.

[0009] According to the above technical solution, a slide groove is opened at the front of the long board, the installation box is arranged inside the slide groove, and a No. 1 spring piece is fixedly installed between the right side of the installation box and the right side of the slide groove, and the installation box is reset by setting the No. 1 spring piece.

[0010] According to the above technical solution, a sliding groove is provided at the front of the disassembly plate, and the limit block is slidably installed inside the sliding groove. A No. 2 spring piece is fixedly installed at the bottom of the limit block and the bottom of the sliding groove. A limiting groove is provided on the circumferential surface of the rotating shaft. The No. 2 spring piece is provided to realize the resetting of the limit block, so that the gear cannot rotate in the opposite direction.

[0011] According to the above technical solution, the baffle is fixedly mounted on the circumferential surface of the short rod close to the extension rod, a groove is provided on the circumferential surface of the short rod, the telescopic block is slidably mounted inside the groove, a No. 3 spring is fixedly mounted between the bottom of the telescopic block and the groove, and a No. 2 spring is fixedly mounted between the left side of the baffle and the positioning box. By providing the No. 2 spring, the short rod will not move in rare cases and cause the alarm device to mispronounce. By providing the No. 3 spring and the telescopic block, the alarm device will not reset after being triggered, thereby causing the staff to miss the alarm.

[0012] According to the above technical solution, the movable plate is slidably installed inside the drive box, the moving rod is fixedly installed on the left side of the movable plate, a limiting groove is opened on the top of the movable rod, one end of the limiting rod is fixedly installed on the bottom of the sliding plate, and the other end of the limiting rod is inside the limiting groove, and a No. 3 spring is fixedly installed between the movable plate and the drive box. The moving rod is limited by setting the limiting rod so that the brake device will not be triggered when the elevator is operating normally. By setting the No. 3 spring, the brake pad can quickly brake the elevator transmission block after the limit is released.

[0013] The present invention provides a safety protection device for elevator guide rails. It has the following beneficial effects:

[0014] (1) The invention, by contacting the left and right sides of the elevator transmission block with the circumferential surface of the roller, causes the roller to rotate and the moving box to move in the opposite direction. The rotation of the roller causes the rotating shaft to rotate. The movement of the moving box drives the inclined surface block to move. The inclined surface block moves until it contacts the inclined surface of the rack. The inclined surface block continues to move and pushes the rack to move upward. The inclined surface block continues to move to move the installation box. The movement of the installation box drives the rack to move. The rack moves and contacts the teeth of the gear, causing the gear to rotate. The nut is tightened by rotating the gear, thereby making the bolt connection more secure.

[0015] (2) In the present invention, when the elevator runs at an abnormal speed, the roller speed increases and generates a huge centrifugal force. The rotation of the roller speed increases and generates a huge centrifugal force to rotate the rotating shaft. The rotation of the rotating shaft drives the rotating plate to rotate. The rotating plate rotates and hits the short plate. The rotating plate hits and causes the short plate to move upward. The upward movement of the short plate drives the long rod to move upward. The upward movement of the long rod drives the bent rod upward. The bent rod moves upward and contacts the sliding plate. The bent rod continues to move upward and drives the sliding plate to move upward. The upward movement of the sliding plate drives the limit rod to move upward. The limit rod releases the limit on the moving rod, so that the brake pad pops out. The brake pad contacts the elevator transmission block and generates friction to slow down the elevator transmission block, thereby slowing down the elevator and avoiding sudden braking to cause harm to people in the elevator.

[0016] (3) In this invention, when the gap between the guide rail and the wall is too large, the extension rod drives the force plate to move, and the movement of the extension rod causes the inclined surface of the inclined block to contact the short rod, and the inclined surface of the inclined block contacts the short rod to move the short rod, and the movement of the short rod drives the telescopic block to move, and the telescopic block moves and contacts the positioning box, and the telescopic block contacts the positioning box to move downward, and the short rod continues to move to drive the installation plate to move, and the movement of the installation plate drives the copper sheet to move, so that when the elevator transmission block contacts the roller, the roller rotates, causing the rotating shaft to drive the impact plate to rotate, and the impact plate collides with the copper sheet to produce a sound to sound an alarm, reminding people riding the elevator to leave the elevator and reminding staff to repair the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position structure of the fastening device of the present invention; Figure 3 This is a schematic diagram of the structure of the brake device of the present invention; Figure 4 This is a schematic diagram of the structure of the alarm device of the present invention; Figure 5 It is a partial structural schematic diagram of the alarm device of the present invention; Figure 6 For the present invention Figure 2 Schematic diagram of the structure of part A; Figure 7 For the present invention Figure 2 Schematic diagram of the structure of part B; Figure 8 For the present invention Figure 3 Schematic diagram of the structure of part C.

[0018] In the figure: 1, guide rail; 2, elevator drive block; 3, long board; 4, fixed board; 5, fastening device; 501, moving box; 502, roller; 503, inclined block; 504, installation box; 505, rack; 506, gear; 507, disassembly plate; 508, rotating shaft; 509, limit block; 510, ratchet; 6, brake device; 601, drive box; 602, movable board; 603, moving rod; 6 04, brake pad; 605, limit rod; 606, sliding plate; 607, bending rod; 608, long rod; 609, short plate; 610, rotating plate; 7, alarm device; 701, positioning box; 702, force plate; 703, extension rod; 704, inclined block; 705, short rod; 706, mounting plate; 707, copper sheet; 708, impact plate; 709, rotating shaft; 710, baffle; 711, telescopic block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 8 A safety protection device for an elevator guide rail comprises a guide rail 1, an elevator transmission block 2 is slidably mounted on the surface of the guide rail 1, a long plate 3 is bolted to the front of the guide rail 1, a fixing plate 4 is bolted to the rear of the guide rail 1, a fastening device 5 is arranged on the surface of the guide rail 1, a brake device 6 is arranged on the surface of the guide rail 1, and an alarm device 7 is arranged on the surface of the guide rail 1; The fastening device 5 includes a moving box 501, a roller 502, a ramp block 503, a mounting box 504, a rack 505, a gear 506, a disassembly plate 507, a rotating shaft 508, a limit block 509 and a ratchet 510. A slide groove is provided at the front of the long board 3, the mounting box 504 is arranged inside the slide groove, the rack 505 is arranged inside the mounting box 504, the ramp block 503 slides through the mounting box 504, the moving box 501 is fixedly installed on the left side of the ramp block 503, the roller 502 is rotatably installed inside the moving box 501, and the gear 506 is fixedly installed on the nut The surface, the right side of the long plate 3 is provided with an installation groove, the disassembly plate 507 is slidably installed in the installation groove, the rotating shaft 508 is rotatably installed in the front of the disassembly plate 507, the pawl 510 is fixedly installed on the circumferential surface of the rotating shaft 508, the front of the disassembly plate 507 is provided with a sliding groove, a limit block 509, the limit block 509 is slidably installed in the sliding groove, and the circumferential surface of the rotating shaft 508 is provided with a limit groove. By arranging the fastening device 5, the nut can be reinforced when the elevator is running, so that the bolt connection is tightened, and it can avoid that the nut returns to the state before the force is applied when the device is reset.

[0021] The brake device 6 includes a driving box 601, a movable plate 602, a moving rod 603, a brake pad 604, a limiting rod 605, a sliding plate 606, a bent rod 607, a long rod 608, a short plate 609 and a rotating plate 610. The long rod 608 slides through the bottom of the moving box 501, the short plate 609 is fixedly installed on the side of the long rod 608 close to the roller 502, the front part of the roller 502 is fixedly installed with a rotating shaft 709, the rotating plate 610 is fixedly installed on the circumferential surface of the rotating shaft 709, the bent rod 607 is fixedly installed at the bottom of the long rod 608, and the driving The moving box 601 is fixedly installed on the left side of the long board 3, the movable plate 602 is arranged inside the driving box 601, the moving rod 603 is fixedly installed on the left side of the movable plate 602, the moving rod 603 slides through the left side of the driving box 601, the brake pad 604 is fixedly installed on the left side of the moving rod 603, a positioning groove is opened inside the driving box 601, the sliding plate 606 is slidably installed inside the positioning groove, and the limit rod 605 is fixedly installed on the bottom of the sliding plate 606. By setting the brake device 6, the elevator can be decelerated and braked when the elevator running speed is abnormal.

[0022] The alarm device 7 includes a positioning box 701, a force plate 702, an extension rod 703, an inclined block 704, a short rod 705, a mounting plate 706, a copper sheet 707, a collision plate 708, a rotating shaft 709, a baffle 710 and a telescopic block 711. The positioning box 701 is fixedly mounted on the front of the long plate 3, the force plate 702 is arranged inside the positioning box 701, the extension rod 703 is fixedly mounted on the rear of the force plate 702, the extension rod 703 slides through the positioning box 701, the long plate 3, the guide rail 1 and the fixed plate 4, and the inclined block 704 is fixedly mounted on the extension rod 703 circumferential surface, short rod 705 slides through the left side of positioning box 701, baffle 710 is fixedly installed on the circumferential surface of short rod 705, the circumferential surface of short rod 705 is provided with a groove, telescopic block 711 is slidably installed in the groove, mounting plate 706 is fixedly installed on the left side of short rod 705, copper sheet 707 is fixedly installed on the left side of mounting plate 706, and impact sheet 708 is fixedly installed on rotating shaft 709. By setting alarm device 7, an alarm sound is emitted when a gap is generated between guide rail 1 and the wall and the gap is too large, thereby reminding staff to perform maintenance.

[0023] The inclined plane block 503 is fixedly installed on the right side of the moving box 501, and the inclined plane block 503 slides through the installation box 504. A No. 1 spring is fixedly installed between the moving box 501 and the installation box 504. By setting the No. 1 spring, the inclined plane block 503 and other structures can be reset when the elevator transmission block 2 is not in contact with the roller 502.

[0024] A slide groove is provided at the front of the long board 3, and the installation box 504 is arranged inside the slide groove. A No. 1 spring piece is fixedly installed between the right side of the installation box 504 and the right side of the slide groove, and the installation box 504 is reset by setting the No. 1 spring piece.

[0025] A sliding groove and a limit block 509 are provided at the front of the disassembly plate 507. The limit block 509 is slidably installed inside the sliding groove. A second spring piece is fixedly installed at the bottom of the limit block 509 and the bottom of the sliding groove. A limit groove is provided on the circumferential surface of the rotating shaft 508. The limit block 509 is reset by setting the second spring piece, so that the gear 506 cannot rotate in the reverse direction.

[0026] The baffle 710 is fixedly installed on the circumferential surface of the short rod 705 close to the extension rod 703. The circumferential surface of the short rod 705 is provided with a groove. The telescopic block 711 is slidably installed inside the groove. A No. 3 spring is fixedly installed between the bottom of the telescopic block 711 and the groove. A No. 2 spring is fixedly installed between the left side of the baffle 710 and the positioning box 701. By setting the No. 2 spring, the short rod 705 will not move in rare cases to cause the alarm device 7 to mispronounce. By setting the No. 3 spring and the telescopic block 711, the alarm device 7 will not reset after being triggered, thereby causing the staff to miss the alarm.

[0027] The movable plate 602 is slidably installed inside the drive box 601, the moving rod 603 is fixedly installed on the left side of the movable plate 602, a limiting groove is opened on the top of the moving rod 603, one end of the limiting rod 605 is fixedly installed on the bottom of the sliding plate 606, and the other end of the limiting rod 605 is inside the limiting groove, and a No. 3 spring is fixedly installed between the movable plate 602 and the drive box 601. The moving rod 603 is limited by setting the limiting rod 605, so that the brake device 6 will not be triggered when the elevator is operating normally. By setting the No. 3 spring, the brake pad 604 can quickly brake the elevator transmission block 2 after the limit is released.

[0028] During operation: When the elevator starts to run, the elevator transmission block 2 on the surface of the elevator car slides on the guide rail 1. When the left and right sides of the elevator transmission block 2 contact the circumferential surface of the roller 502, the left and right sides of the elevator transmission block 2 contact the surface of the roller 502 to rotate the roller 502 and the moving box 501 moves in the opposite direction. The rotation of the roller 502 rotates the rotating shaft 709. The movement of the moving box 501 drives the inclined surface block 503 to move. The inclined surface block 503 moves to contact the inclined surface of the rack 505. The inclined surface block 503 continues to move to push the rack 505 to move upward. The inclined surface block 503 continues to move to move the installation box 504. The installation box 504 moves to drive the rack 505 to move. The rack 505 moves and contacts the gear 506. The mounting box 504 continues to move to drive the rack 505 to move. The movement of the rack 505 causes the gear 506 to rotate. The rotation of the gear 506 causes the nut to rotate. The rotation of the nut makes the bolt connection tighter. The rotation of the gear 506 causes the pawl 510 to rotate. The rotation of the pawl 510 drives the rotating shaft 508 to rotate. The rotation of the rotating shaft 508 causes the limit block 509 to move downward. When the pawl 510 is not in contact with the gear 506, the No. 1 spring resets the limit block 509. The reset of the limit block 509 limits the rotating shaft 508 in one direction. The limit block 509 limits the rotating shaft 508 in one direction so that the gear 506 cannot rotate. When the elevator transmission block 2 is not in contact with the circumferential surface of the roller 502, the No. 2 spring and the No. 1 spring drive the parts to reset.

[0029] When the elevator transmission block 2 moves on the guide rail 1 too fast, the left and right sides of the elevator transmission block 2 contact the circumferential surface of the roller 502, and the left and right sides of the elevator transmission block 2 contact the surface of the roller 502 to make the roller 502 rotate and the moving box 501 move in the opposite direction. The elevator transmission block 2 runs too fast, which makes the roller 502 rotate faster. The faster roller 502 rotates faster and generates huge centrifugal force. The faster roller 502 rotates faster and generates huge centrifugal force to make the rotating shaft 709 rotate. The rotation of the rotating shaft 709 drives the rotating piece 610 to rotate. The rotating piece 610 rotates and hits the short plate 609. The rotating piece 610 hits the short plate 609 to move upward. The short plate 609 moves upward and drives the long rod 608 to move upward. The long rod 608 moves upward to make the bent rod 607 move upward. 607 moves upward and contacts the sliding plate 606, the bent rod 607 continues to move upward, driving the sliding plate 606 to move upward, the sliding plate 606 moves upward, driving the limit rod 605 to move upward, the limit rod 605 moves upward to make the limit rod 605 disengage from the limiting groove, the limit rod 605 disengages from the limiting groove to release the limit on the moving rod 603, the limiting contact of the moving rod 603 makes the No. 3 spring push the movable plate 602 to move, the movement of the movable plate 602 drives the moving rod 603 to move, the movement of the moving rod 603 drives the brake pad 604 to move, the brake pad 604 moves and contacts the side of the elevator transmission block 2, the brake pad 604 contacts the side of the elevator transmission block 2 to generate huge friction, and the huge friction stops the elevator transmission block 2 from moving on the guide rail 1.

[0030] When a gap is generated between the guide rail 1 and the wall, the distance between the guide rail 1 and the wall increases, and the increase in the distance between the guide rail 1 and the wall causes the extension rod 703 to drive the force plate 702 to move, and the extension rod 703 moves to cause the inclined surface of the inclined block 704 to contact the short rod 705, and the inclined surface of the inclined block 704 contacts the short rod 705 to move the short rod 705, and the movement of the short rod 705 drives the telescopic block 711 to move, and the telescopic block 711 moves and contacts the positioning box 701, and the telescopic block 711 contacts the positioning box 701 to move the telescopic block 711 downward, and the short rod 705 continues to move to drive the mounting plate 706 to move, and the movement of the mounting plate 706 drives the copper sheet 707 moves, and the short rod 705 continues to move until the telescopic block 711 does not contact the positioning box 701. The telescopic block 711 does not contact the positioning box 701, so that the telescopic block 711 is pushed out of the groove by the No. 3 spring, and the telescopic block 711 pops out to reset the short rod 705. When the elevator transmission block 2 contacts the circumferential surface of the roller 502 on the left and right sides to make the roller 502 rotate, the rotation of the roller 502 drives the rotating shaft 709 to rotate, and the rotation of the rotating shaft 709 drives the collision piece 708 to rotate. The collision piece 708 rotates and contacts the copper sheet 707. The collision piece 708 contacts the copper sheet 707 to produce a collision, and the collision piece 708 collides with the copper sheet 707 to produce a sound warning.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety protection device for an elevator guide rail, comprising a guide rail (1), characterized in that: An elevator transmission block (2) is slidably mounted on the surface of the guide rail (1), a long plate (3) is bolted to the front of the guide rail (1), a fixing plate (4) is bolted to the rear of the guide rail (1), a fastening device (5) is provided on the surface of the guide rail (1), a brake device (6) is provided on the surface of the guide rail (1), and an alarm device (7) is provided on the surface of the guide rail (1); The fastening device (5) comprises a moving box (501), a roller (502), a ramp block (503), an installation box (504), a rack (505), a gear (506), a disassembly plate (507), a rotating shaft (508), a limit block (509) and a ratchet (510); a slide groove is provided at the front of the long board (3); the installation box (504) is arranged inside the slide groove; the rack (505) is arranged inside the installation box (504); the ramp block (503) slides through the installation box (504); and the moving box (501) is fixedly mounted on the left side of the ramp block (503). The roller (502) is rotatably mounted inside the moving box (501), the gear (506) is fixedly mounted on the surface of the nut, a mounting groove is provided on the right side of the long plate (3), the disassembly plate (507) is slidably mounted inside the mounting groove, the rotating shaft (508) is rotatably mounted on the front of the disassembly plate (507), the pawl (510) is fixedly mounted on the circumferential surface of the rotating shaft (508), a sliding groove is provided on the front of the disassembly plate (507), the limit block (509), the limit block (509) is slidably mounted inside the sliding groove, and the circumferential surface of the rotating shaft (508) is provided with a limit groove.

2. A safety protection device for elevator guide rails according to claim 1, characterized in that: The brake device (6) comprises a drive box (601), a movable plate (602), a moving rod (603), a brake pad (604), a limit rod (605), a sliding plate (606), a bent rod (607), a long rod (608), a short plate (609) and a rotating plate (610), wherein the long rod (608) slides through the bottom of the moving box (501), the short plate (609) is fixedly mounted on a side of the long rod (608) close to the roller (502), a rotating shaft (709) is fixedly mounted on the front of the roller (502), the rotating plate (610) is fixedly mounted on the circumferential surface of the rotating shaft (709), and the The bent rod (607) is fixedly mounted on the bottom of the long rod (608); the driving box (601) is fixedly mounted on the left side of the long board (3); the movable board (602) is arranged inside the driving box (601); the moving rod (603) is fixedly mounted on the left side of the movable board (602); the moving rod (603) slides through the left side of the driving box (601); the brake pad (604) is fixedly mounted on the left side of the moving rod (603); a positioning groove is provided inside the driving box (601); the sliding plate (606) is slidably mounted inside the positioning groove; and the limiting rod (605) is fixedly mounted on the bottom of the sliding plate (606).

3. A safety protection device for elevator guide rails according to claim 2, characterized in that: The alarm device (7) comprises a positioning box (701), a force-bearing plate (702), an extension rod (703), an inclined block (704), a short rod (705), a mounting plate (706), a copper sheet (707), a collision plate (708), a rotating shaft (709), a baffle (710) and a telescopic block (711); the positioning box (701) is fixedly mounted on the front of the long plate (3); the force-bearing plate (702) is arranged inside the positioning box (701); the extension rod (703) is fixedly mounted on the rear of the force-bearing plate (702); the extension rod (703) slides through the positioning box (701), the long plate (3) and the extension rod (703). The plate (3), the guide rail (1) and the fixed plate (4), the inclined block (704) is fixedly mounted on the circumferential surface of the extension rod (703), the short rod (705) slides through the left side of the positioning box (701), the baffle (710) is fixedly mounted on the circumferential surface of the short rod (705), the circumferential surface of the short rod (705) is provided with a groove, the telescopic block (711) is slidably mounted inside the groove, the mounting plate (706) is fixedly mounted on the left side of the short rod (705), the copper sheet (707) is fixedly mounted on the left side of the mounting plate (706), and the collision sheet (708) is fixedly mounted on the rotating shaft (709).

4. A safety protection device for elevator guide rails according to claim 3, characterized in that: The inclined surface block (503) is fixedly mounted on the right side of the moving box (501), the inclined surface block (503) slides through the installation box (504), and a spring No. 1 is fixedly mounted between the moving box (501) and the installation box (504).

5. A safety protection device for elevator guide rails according to claim 4, characterized in that: A slide groove is provided at the front of the long board (3), the installation box (504) is arranged inside the slide groove, and a first spring piece is fixedly installed between the right side of the installation box (504) and the right side of the slide groove.

6. A safety protection device for elevator guide rails according to claim 5, characterized in that: The disassembly plate (507) has a sliding groove at the front, and the limit block (509) is slidably mounted inside the sliding groove. A second spring sheet is fixedly mounted at the bottom of the limit block (509) and the bottom of the sliding groove, and the circumferential surface of the rotating shaft (508) has a limit groove.

7. A safety protection device for elevator guide rails according to claim 6, characterized in that: The baffle (710) is fixedly mounted on the circumferential surface of the short rod (705) close to the extension rod (703); a groove is formed on the circumferential surface of the short rod (705); the telescopic block (711) is slidably mounted inside the groove; a third spring is fixedly mounted between the bottom of the telescopic block (711) and the groove; and a second spring is fixedly mounted between the left side of the baffle (710) and the positioning box (701).

8. A safety protection device for elevator guide rails according to claim 7, characterized in that: The movable plate (602) is slidably mounted inside the driving box (601), the moving rod (603) is fixedly mounted on the left side of the movable plate (602), a limiting groove is provided on the top of the movable rod (603), one end of the limiting rod (605) is fixedly mounted on the bottom of the sliding plate (606), and the other end of the limiting rod (605) is inside the limiting groove, and a No. 3 spring is fixedly mounted between the movable plate (602) and the driving box (601).

Images