A guide rail type high altitude fall arrester and working method thereof

Abstract

The present invention discloses a guide rail type high altitude fall arrester, comprising a main side plate, a bottom wheel shaft, a bottom wheel, a first pin shaft, a front support arm, a rear support arm, a second pin shaft and a buckle plate, wherein the two main side plates are arranged face to face, the bottom inner side of the main side plate is connected to the bottom wheel through the bottom wheel shaft, and the number of the bottom wheels is four and symmetrically arranged at the front and rear ends of the main side plate; the top of the main side plate is hinged to the front support arm and the rear support arm through the front and rear two first pin shafts, and the length of the front support arm is greater than that of the rear support arm; the rear sides of the bottom ends of the front support arm and the rear support arm are respectively provided with a front support arm clamping platform and a rear support arm clamping platform facing the top surface of the guide rail, the top ends of the front support arm and the rear support arm are hinged to the buckle plate through the second pin shaft, and the buckle penetration hole for connecting the safety rope is opened on the buckle plate. The guide rail type high altitude fall arrester and its working method of the present invention have a two-point clamping connection with the top surface of the aluminum alloy guide rail, and the clamping locking strength is high and the safety is strong.

Description

Technical Field

[0001] The present invention relates to the technical field of fall arresters, and in particular to a guide rail type high altitude fall arrester and a working method thereof. Background Art

[0002] The fall arrester uses the weight of the falling object to control itself, and can quickly brake and lock the falling object within a limited distance. During the construction and maintenance of wind power towers or power transmission and distribution lines, workers are often required to climb ladders or equipment structures to work. By installing the fall arrester on the guide rail and connecting it to the safety rope for climbing, when the construction worker loses balance, the worker's weight can quickly lock the fall arrester on the guide rail, thus avoiding accidents for the construction worker.

[0003] An I-shaped aluminum alloy rail fall arrester refers to a fall arrester that can slide on an I-shaped aluminum alloy rail. Existing rail fall arresters mainly include a housing and a pull arm. A bottom wheel that rolls with the rail is provided at the bottom of the housing, and the top plate of the rail slides in the bottom wheel and housing groove. However, in a single pull arm structure, when the top is suddenly pulled downward, the cam at the bottom of the pull arm clamps the top plate of the rail to lock it. A single clamping locking point can easily scratch the top surface of the I-shaped aluminum alloy rail, causing damage that affects the use of the equipment.

[0004] Therefore, it is necessary to develop a kind of guide rail type high-altitude fall arrester and working method thereof. Summary of the invention

[0005] The purpose of the present invention is to provide a guide rail type high altitude fall arrester, which is clamped to the top surface of an aluminum alloy guide rail in a two-point manner, has high clamping and locking strength, and is highly safe.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a guide rail type high altitude fall arrester, comprising a main side plate, a bottom wheel shaft, a bottom wheel, a first pin shaft, a front support arm, a rear support arm, a second pin shaft and a snap plate, wherein the two main side plates are arranged face to face, the inner sides of the bottoms of the main side plates are connected to the bottom wheels via the bottom wheel shaft, the number of the bottom wheels is four and they are symmetrically arranged at the front and rear ends inside the main side plates respectively; the top of the main side plate is hinged to the front support arm and the rear support arm via the front and rear two first pin shafts, the length of the front support arm is greater than that of the rear support arm; the rear sides of the bottom ends of the front support arm and the rear support arm are respectively provided with a front support arm snap-in platform and a rear support arm snap-in platform facing the top surface of the guide rail, the top ends of the front support arm and the rear support arm are hinged to the snap plate via the second pin shaft, and the snap plate is provided with a snap through hole for connecting a safety rope.

[0008] Furthermore, the bottom wheel is rotatably sleeved on the inner end of the bottom wheel shaft, the outer end of the bottom wheel shaft is inserted into the bottom hole of the main side plate, and the outer end surface of the bottom wheel shaft is provided with a threaded hole and is threadedly connected to a first screw for axial locking.

[0009] Furthermore, the outer wheel surface of the bottom wheel is set as an outer conical wheel surface, and the outer conical wheel surface is inclined with a higher outer side and a lower inner side and is adapted to the bottom surface of the guide rail top plate.

[0010] Furthermore, both ends of the first pin shaft are inserted into the top holes of the main side plate, and the end surface of the first pin shaft is provided with threads and is threadedly connected to the second screw for axial locking.

[0011] Furthermore, it also includes upper rollers, and the number of the upper rollers is four; two of the upper rollers are rotatably sleeved on the first pin shaft and are respectively located on both sides of the front support arm or the rear support arm.

[0012] Furthermore, the front arm rear rounded corner and the rear arm rounded corner are respectively arranged on the front sides of the bottom ends of the front arm and the rear arm, the diameter of the upper roller is larger than the front arm rear rounded corner and the rear arm rounded corner, and the upper roller rolls and contacts the top surface of the guide rail top plate.

[0013] Furthermore, it also includes a torsion spring, wherein the spiral portion of the torsion spring is sleeved on the outside of the first pin shaft, one end of the torsion spring is clamped in the positioning groove of the inner wall of the main side plate, and the other end of the torsion spring is pressed against the front wall of the front support arm.

[0014] Furthermore, C-shaped grooves are provided at the top ends of the front support arm and the rear support arm, both ends of the buckle plate are inserted into the C-shaped grooves and are hinged by the side insertion of the second pin shaft, and the protruding end of the second pin shaft is axially locked by a retaining spring assembly.

[0015] Furthermore, the retaining spring group includes a first retaining spring and a second retaining spring, and the protruding end of the second pin shaft is provided with two retaining spring grooves for respectively installing the first retaining spring and the second retaining spring; the retaining spring group also includes a retaining spring protective cap, which is buckled on the inner side of the first retaining spring, and the second retaining spring axially clamps the retaining spring protective cap.

[0016] The present invention also discloses a working method of a guide rail type high altitude fall arrester, which uses any of the above-mentioned guide rail type high altitude fall arrester to be guided and connected to the top plate of the guide rail, and uses two support arms to be locked to the upper surface of the top plate of the guide rail at the same time.

[0017] Compared with the prior art, the beneficial technical effects of the present invention are:

[0018] The present invention discloses a guide rail type high altitude fall arrester, which is an unequal trapezoid structure composed of a main side plate, a front support arm, a rear support arm and a snap plate. When the snap plate receives a sudden downward falling force, it simultaneously pulls the front support arm and the rear support arm to rotate around their respective first pin shafts, and the front support arm clamping platform and the rear support arm clamping platform are clamped on the top surface of the guide rail top plate at the same time. The guide rail type high altitude fall arrester of the present invention is integrally formed by plate materials and pin shafts. Compared with the integral shell structure on the market, it is easy to process and form, and has a small weight and high strength. The guide rail type high altitude fall arrester and its working method of the present invention are clamped on the top surface of the aluminum alloy guide rail at two points, and the clamping and locking strength is high, and the safety is strong.

[0019] In addition, by axially locking the outer end of the bottom wheel shaft by the first screw, it can prevent it from loosening; by setting the outer wheel surface of the bottom wheel as an outer cone wheel surface, it can cooperate well with the bottom surface of the guide rail top plate, increase the contact area, and make the operation more stable. By axially locking the end face of the first pin shaft by the second screw, it can prevent the pin shaft from loosening; by setting the upper roller, and the diameter of the upper roller is larger than the rear fillet of the front support arm and the fillet of the rear support arm, it can roll and contact the top surface of the guide rail top plate, reducing the resistance of the operator to pull the guide rail type high-altitude fall arrester of the present invention upward during the climbing process. By setting the torsion spring, the front support arm can be pushed backward to ensure that the top ends of the front support arm and the rear support arm are tilted backward, and the front support arm clamping platform and the rear support arm clamping platform slightly clamp the top surface of the guide rail top plate to prevent the guide rail type high-altitude fall arrester of the present invention from sliding down under the weight of the self-weight. By inserting both ends of the snap plate into the C-shaped groove and hinged by the second pin shaft, the connection strength is high to prevent it from falling off; the first clip and the second clip simultaneously clamp the second pin shaft for double insurance to reduce the risk of falling off; through the setting of the clip protective cap, the inner first clip can be protected to prevent it from accidentally falling off due to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the main structure of the guide rail type high-altitude fall arrester of the present invention;

[0022] Figure 2 It is a schematic diagram of the right side structure of the guide rail type high altitude fall arrester of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the guide rail type high altitude fall arrester of the present invention from a top view;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide rail type high-altitude fall arrester of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the front support arm of the present invention;

[0026] Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA part;

[0027] Figure 7 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB part;

[0028] Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure of the CC part.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. main side plate; 101. guard plate; 2. bottom wheel shaft; 3. bottom wheel; 301. outer conical wheel surface; 4. first pin shaft; 5. front support arm; 501. rear fillet of front support arm; 502. front support arm clamping platform; 503. compression spring groove; 6. rear support arm; 602. rear support arm clamping platform; 7. second pin shaft; 8. snap plate; 801. snap through hole; 9. torsion spring; 10. first screw; 11. second screw; 12. first retaining spring; 13. retaining spring protective cap; 14. second retaining spring; 15. upper roller. DETAILED DESCRIPTION

[0030] The core of the present invention is to provide a guide rail type high altitude fall arrester and a working method thereof, which is clamped at two points on the top surface of the aluminum alloy guide rail, has high clamping and locking strength, and is highly safe.

[0031] 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.

[0032] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] With reference to the accompanying drawings, Figure 1 It is a schematic diagram of the main structure of the guide rail type high-altitude fall arrester of the present invention; Figure 2 It is a schematic diagram of the right side structure of the guide rail type high altitude fall arrester of the present invention; Figure 3 It is a schematic diagram of the structure of the guide rail type high altitude fall arrester of the present invention from a top view; Figure 4 It is a schematic diagram of the three-dimensional structure of the guide rail type high-altitude fall arrester of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the front support arm of the present invention; Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA part; Figure 7 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB part; Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure of the CC part.

[0034] In a specific embodiment, Figures 1 to 5 As shown, a guide rail type high altitude fall arrester comprises a main side plate 1, a bottom wheel shaft 2, a bottom wheel 3, a first pin shaft 4, a front support arm 5, a rear support arm 6, a second pin shaft 7 and a buckle plate 8. Two main side plates 1 are arranged face to face, and the inner side of the bottom of the main side plate 1 is connected to the bottom wheel 3 through the bottom wheel shaft 2. The number of the bottom wheels 3 is four and they are symmetrically arranged at the front and rear ends of the main side plate 1. The top of the main side plate 1 is hinged to the front support arm 5 and the rear support arm 6 through the front and rear first pin shafts 4. The two ends of the first pin shaft 4 are respectively connected to the two main side plates 1, and the length of the front support arm 5 is greater than that of the rear support arm 6. The rear sides of the bottom ends of the front support arm 5 and the rear support arm 6 are respectively provided with a front support arm clamping platform 502 and a rear support arm clamping platform 602 facing the top surface of the guide rail. The top ends of the front support arm 5 and the rear support arm 6 are hinged to the buckle plate 8 through the second pin shaft 7. The buckle plate 8 is provided with a buckle through hole 801 for connecting a safety rope.

[0035] Through the unequal trapezoidal structure composed of the main side plate 1, the front support arm 5, the rear support arm 6 and the snap plate 8, when the snap plate 8 receives the sudden downward falling force, it simultaneously pulls the front support arm 5 and the rear support arm 6 to rotate around their respective first pin shafts 4, and the front support arm clamping platform 502 and the rear support arm clamping platform 602 are clamped on the top surface of the guide rail top plate at the same time. The guide rail type high-altitude fall arrester of the present invention is integrally formed by plate materials and pin shafts. Compared with the integral shell structure on the market, it is easy to process and form, light in weight and high in strength. The guide rail type high-altitude fall arrester of the present invention and its working method have a two-point clamping connection with the top surface of the aluminum alloy guide rail, and have a high clamping locking strength and strong safety.

[0036] In a specific embodiment of the present invention, Figures 1 to 4 and Figure 6 As shown, the bottom wheel 3 is rotatably sleeved on the inner end of the bottom wheel shaft 2, and the outer end of the bottom wheel shaft 2 is inserted into the bottom hole of the main side plate 1. The outer end surface of the bottom wheel shaft 2 is provided with a threaded hole and is threadedly connected with a first screw 10 for axial locking.

[0037] Specifically, if Figures 1 to 4 and Figure 6 As shown, the outer wheel surface of the bottom wheel 3 is set as an outer conical wheel surface 301, and the outer conical wheel surface 301 is set to be high on the outside and low on the inside and is inclined and adapted to the bottom surface of the guide rail top plate.

[0038] The outer end of the bottom wheel shaft 2 is axially locked by the first screw 10 to prevent it from loosening; by setting the outer wheel surface of the bottom wheel 3 to the outer conical wheel surface 301, it can be well matched with the bottom surface of the guide rail top plate, thereby increasing the contact area and making the operation more stable.

[0039] In a specific embodiment of the present invention, Figures 1 to 4 and Figure 8 As shown, both ends of the first pin shaft 4 are inserted into the top holes of the main side plate 1, and the end surface of the first pin shaft 4 is provided with threads and is threadedly connected to the second screw 11 for axial locking.

[0040] Specifically, if Figures 1 to 4 and Figure 8 As shown, the rail-type high-altitude fall arrester of the present invention further includes an upper roller 15, and the number of the upper rollers 15 is four. The two upper rollers 15 are rotatably sleeved on the first pin 4 and are respectively located on both sides of the front support arm 5 or the rear support arm 6. The wheel body cross section of the upper roller 15 is an isosceles trapezoid, and the outer wheel surface is narrowed.

[0041] Specifically, if Figures 1 to 4 and Figure 8 As shown, the front arm rear fillet 501 and the rear arm fillet are respectively provided on the front sides of the bottom ends of the front arm 5 and the rear arm 6, the diameter of the upper roller 15 is larger than the front arm rear fillet 501 and the rear arm fillet, and the upper roller 15 rolls and contacts the top surface of the guide rail top plate.

[0042] The end face of the first pin shaft 4 is axially locked by the second screw 11, which can prevent the pin shaft from loosening; by setting the upper roller 15, and the diameter of the upper roller 15 is larger than the rear fillet 501 of the front support arm and the fillet of the rear support arm, it can roll and contact the top surface of the guide rail top plate, thereby reducing the resistance of the operator to pulling the guide rail type high-altitude fall arrester of the present invention upward during the climbing process.

[0043] In a specific embodiment of the present invention, Figures 1 to 5 and Figure 8 As shown, the rail-type high-altitude fall arrester of the present invention also includes a torsion spring 9, the spiral portion of the torsion spring 9 is sleeved on the outside of the first pin shaft 4, one end of the torsion spring 9 is clamped in the positioning groove on the inner wall of the main side plate 1, and the other end of the torsion spring 9 is pressed tightly in the compression spring groove 503 on the front wall of the front support arm 5.

[0044] By setting the torsion spring 9, the front support arm 5 can be pushed backward to ensure that the top ends of the front support arm 5 and the rear support arm 6 are tilted backward. The front support arm clamping platform 502 and the rear support arm clamping platform 602 slightly clamp the top surface of the guide rail top plate to prevent the guide rail type high-altitude fall arrester of the present invention from sliding down under its own weight.

[0045] In a specific embodiment of the present invention, Figures 1 to 4 and Figure 7As shown, a C-shaped groove is centrally provided at the top end of the front support arm 5 and the rear support arm 6, both ends of the buckle plate 8 are inserted into the C-shaped groove and are hinged by the side insertion of the second pin shaft 7, and the protruding end of the second pin shaft 7 is axially locked by a retaining spring assembly.

[0046] Specifically, if Figures 1 to 4 and Figure 7 As shown, the circlip assembly includes a first circlip 12 and a second circlip 14, and the protruding end of the second pin shaft 7 is provided with two circlip grooves for respectively installing the first circlip 12 and the second circlip 14. The circlip assembly also includes a circlip protective cap 13, which is buckled on the inner first circlip 12, and the second circlip 14 axially clamps the circlip protective cap 13.

[0047] By inserting both ends of the snap plate 8 into the C-shaped groove and hinged by the second pin shaft 7 on the side, the connection strength is high to prevent it from falling off; the first clip 12 and the second clip 14 simultaneously clamp the second pin shaft 7 to provide double insurance to reduce the risk of falling off; the setting of the clip protective cap 13 can protect the inner first clip 12 to prevent it from accidentally falling off due to external force.

[0048] In a specific embodiment of the present invention, Figures 1 to 4 As shown, the main side plate 1 is provided with guard plates 101 on the front and rear outer sides of the bottom wheel 3. The guard plates 101 provide effective protection in the traveling direction of the bottom wheel 3. If there is an obstacle on the top plate of the guide rail, it can be scraped away to avoid entering the wheel surface of the bottom wheel 3 and forming an obstruction or jam.

[0049] The present invention also discloses a working method of a guide rail type high altitude fall arrester, which utilizes the guide rail type high altitude fall arrester in any one of the above specific embodiments to be connected to the top plate of the guide rail, and uses two support arms to be simultaneously locked to the upper surface of the guide rail top plate to perform anti-fall locking.

[0050] The working process of the guide rail type high altitude fall arrester of the present invention is as follows: the guide rail type high altitude fall arrester of the present invention is installed on the top plate of the guide rail, and the operator connects the safety rope to the buckle through hole 801 through the buckle. When climbing, the safety rope drags the buckle plate 8 upward, and the buckle plate 8 pushes the scalene to overcome the resistance of the torsion spring 9 and deforms slightly upward, and the upper roller 15 at the rear and the bottom wheel 3 at the front roll in contact with the upper surface and the bottom surface of the guide rail top plate respectively, and the guide rail type high altitude fall arrester of the present invention moves upward smoothly. When pausing, the torsion spring 9 pushes the front support arm 5 backward, and the scalene deforms slightly downward, and the front support arm clamping platform 502 and the rear support arm clamping platform 602 slightly clamp the top surface of the guide rail top plate to prevent the guide rail type high altitude fall arrester of the present invention from sliding down due to its own weight. When climbing down, the safety rope drags the buckle plate 8 downward, and slowly drags downward. The front arm clamping platform 502 and the rear arm clamping platform 602 are not enough to be locked. The guide rail type high-altitude fall arrester of the present invention can overcome the resistance of the clamping and slowly descend under dragging.

[0051] The guide rail type high altitude fall arrester of the present invention is an unequal trapezoid structure composed of a main side plate 1, a front support arm 5, a rear support arm 6 and a snap plate 8. When the snap plate 8 receives a sudden downward falling force, it simultaneously pulls the front support arm 5 and the rear support arm 6 to rotate around their respective first pins 4, and the front support arm snap-in platform 502 and the rear support arm snap-in platform 602 are simultaneously clamped on the top surface of the guide rail top plate. The guide rail type high altitude fall arrester of the present invention is integrally formed by plate material and pin shaft installation. Compared with the integral shell structure on the market, it is easy to process and form, has a small weight and high strength. The guide rail type high altitude fall arrester and its working method of the present invention are two-point clamped on the top surface of the aluminum alloy guide rail, and the clamping locking strength is high and the safety is strong. In addition, the outer end of the bottom wheel shaft 2 is axially locked by the first screw 10, which can prevent loosening; by setting the outer wheel surface of the bottom wheel 3 as the outer cone wheel surface 301, it can be well matched with the bottom surface of the guide rail top plate, increase the contact area, and run more stably. The second screw 11 axially locks the end face of the first pin 4, which can prevent the pin from loosening; the upper roller 15 is set, and the diameter of the upper roller 15 is larger than the rear fillet 501 of the front arm and the fillet of the rear arm, so that it can roll and contact the top surface of the guide rail top plate, reducing the resistance of the operator to pull the guide rail type high-altitude fall arrester of the present invention upward during the climbing process. The torsion spring 9 is set to push the front arm 5 backward to ensure that the top ends of the front arm 5 and the rear arm 6 are tilted backward, and the front arm clamping platform 502 and the rear arm clamping platform 602 slightly clamp the top surface of the guide rail top plate to prevent the guide rail type high-altitude fall arrester of the present invention from sliding down under the weight of the self-weight. By inserting both ends of the snap plate 8 into the C-shaped groove and hinged by the second pin shaft 7 on the side, the connection strength is high to prevent it from falling off; the first clip 12 and the second clip 14 simultaneously clamp the second pin shaft 7 to provide double insurance to reduce the risk of falling off; the setting of the clip protective cap 13 can protect the inner first clip 12 to prevent it from accidentally falling off due to external force.

[0052] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A rail-type high-altitude fall arrester, characterized in that: The invention comprises a main side plate (1), a bottom wheel shaft (2), a bottom wheel (3), a first pin shaft (4), a front support arm (5), a rear support arm (6), a second pin shaft (7) and a snap plate (8), wherein the two main side plates (1) are arranged face to face, the inner side of the bottom of the main side plate (1) is connected to the bottom wheel (3) via the bottom wheel shaft (2), the number of the bottom wheels (3) is four and they are symmetrically arranged at the front and rear ends of the main side plate (1); the top of the main side plate (1) is hinged to the front support arm (5) and the rear support arm (6) via the front and rear first pin shafts (4), the length of the front support arm (5) is greater than that of the rear support arm (6); the rear sides of the bottom ends of the front support arm (5) and the rear support arm (6) are respectively provided with a front support arm snap-in platform (502) and a rear support arm snap-in platform (502) facing the top surface of the guide rail. A connecting platform (602), wherein the top ends of the front support arm (5) and the rear support arm (6) are hingedly connected to the buckle plate (8) via a second pin shaft (7), and the buckle plate (8) is provided with a buckle through hole (801) for connecting a safety rope; and further comprising upper rollers (15), wherein the number of the upper rollers (15) is four; two of the upper rollers (15) are rotatably sleeved on the first pin shaft (4) and are respectively located on both sides of the front support arm (5) or the rear support arm (6); the front side of the bottom end of the front support arm (5) and the rear support arm (6) are respectively provided with a front support arm rear rounded corner (501) and a rear support arm rounded corner, the diameter of the upper roller (15) is larger than the front support arm rear rounded corner (501) and the rear support arm rounded corner, and the upper roller (15) rolls in contact with the top surface of the guide rail top plate.

2. The rail-type high-altitude fall arrester according to claim 1, characterized in that: The bottom wheel (3) is rotatably sleeved on the inner end of the bottom wheel shaft (2), the outer end of the bottom wheel shaft (2) is inserted into the bottom hole of the main side plate (1), and the outer end surface of the bottom wheel shaft (2) is provided with a threaded hole and is threadedly connected to a first screw (10) for axial locking.

3. The rail-type high-altitude fall arrester according to claim 2, characterized in that: The outer wheel surface of the bottom wheel (3) is arranged as an outer conical wheel surface (301), and the outer conical wheel surface (301) is arranged to be higher on the outside and lower on the inside and is inclined and adapted to the bottom surface of the guide rail top plate.

4. The rail-type high-altitude fall arrester according to claim 1, characterized in that: Both ends of the first pin shaft (4) are inserted into the top holes of the main side plate (1); the end surface of the first pin shaft (4) is provided with a thread and is threadedly connected to a second screw (11) for axial locking; the cross section of the wheel body of the upper roller (15) is an isosceles trapezoid, and the outer wheel surface is narrowed.

5. The rail-type high-altitude fall arrester according to claim 4, characterized in that: It also includes a torsion spring (9), the spiral portion of which is sleeved on the outside of the first pin shaft (4), one end of which is clamped in a positioning groove on the inner wall of the main side plate (1), and the other end of which is pressed against the front wall of the front support arm (5).

6. The rail-type high-altitude fall arrester according to claim 1, characterized in that: The top ends of the front support arm (5) and the rear support arm (6) are provided with C-shaped grooves, the two ends of the buckle plate (8) are inserted into the C-shaped grooves and are hinged by the side insertion of the second pin shaft (7), and the protruding end of the second pin shaft (7) is axially locked by a retaining spring assembly.

7. The rail-type high-altitude fall arrester according to claim 6, characterized in that: The retaining spring assembly comprises a first retaining spring (12) and a second retaining spring (14); the protruding end of the second pin shaft (7) is provided with two retaining spring grooves for respectively mounting the first retaining spring (12) and the second retaining spring (14); the retaining spring assembly further comprises a retaining spring protective cap (13); the retaining spring protective cap (13) is buckled onto the first retaining spring (12) on the inner side; the second retaining spring (14) axially clamps the retaining spring protective cap (13).

8. A method for operating a rail-type high-altitude fall arrester, characterized in that: The guide rail type high altitude fall arrester as described in any one of claims 1 to 7 is connected to the top plate of the guide rail, and two support arms are simultaneously locked to the upper surface of the top plate of the guide rail.

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