A self-locking anti-falling device and its usage method

Abstract

The present invention provides a self-locking anti-falling device and a using method. At both ends of one side of the anti-falling device housing, left guide wheel sets are symmetrically and rotatably installed. The left guide wheel sets form a rolling fit with one side of the steel wire rope passing through the interior of the anti-falling device housing. At the lower part of the anti-falling device housing, a pressure lever torsion spring shaft is rotatably installed through a torsion spring, and a pressure lever is installed on the pressure lever torsion spring shaft. A small eccentric guide wheel and a large eccentric guide wheel are rotatably installed on the pressure lever. A boss handle is rotatably installed on the right side of the anti-falling device housing, and the lower side wall of the boss handle is matched with a bracket dial block for position locking thereof. The middle part of the bracket dial block is hinged on the anti-falling device housing, and a bracket dial block spring is connected between the bottom end of the bracket dial block and the anti-falling device housing. A cover plate is installed at the top end of the anti-falling device housing. This anti-falling device can drive the pressure lever to rotate through the boss handle, so as to clamp the steel wire rope. The lower part of the boss handle has a self-locking device, which can prevent the rotation of the boss handle, and has good safety, solving the problems that the traditional anti-falling device cannot be self-locked in time and has serious wear.

Description

Technical Field

[0001] The present invention relates to the technical field of fall arresters, and particularly to a self-locking fall arrester and a using method thereof. Background Art

[0002] A fall arrester, also called a speed differential, is a product that protects workers involved in high-altitude work, edge work, and climbing work during work. When the fall arrester is working normally, it is in a semi-tensioned state and can quickly brake and lock itself within a limited distance to ensure the personal safety of the operator.

[0003] When the existing fall arresters are in use, it is often necessary to change the suspension point. The suspension point cannot move with the movement of the person, and safety accidents are likely to occur during the process of changing the suspension point. The mechanism of the existing fall arresters is relatively complex, and usually adopts the form of ratchets and ratchet teeth to achieve self-locking inside, which is extremely easy to wear during use, thus generating potential safety hazards. In view of this situation, those skilled in the art have provided a simple self-locking fall arrester to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a self-locking fall arrester and a using method thereof. This fall arrester can drive a pressure rod to rotate through a boss handle, realize the clamping of the steel wire rope, and the lower part of the boss handle is provided with a self-locking device to prevent the rotation of the boss handle, with good safety, and solves the problems of untimely self-locking and serious wear of the traditional fall arrester.

[0005] To achieve the above technical features, the object of the present invention is realized as follows: A self-locking fall arrester includes a fall arrester housing. On both ends of one side of the fall arrester housing, left guide wheel groups are symmetrically and rotatably installed. The left guide wheel groups form a rolling fit with one side of the steel wire rope passing through the inside of the fall arrester housing. The lower part of the fall arrester housing is rotatably installed with a pressure rod torsion spring shaft through a torsion spring, and a pressure rod is installed on the pressure rod torsion spring shaft. A small eccentric guide wheel and a large eccentric guide wheel for cooperating with the steel wire rope are rotatably installed on the pressure rod. A boss handle is rotatably installed on the right side of the fall arrester housing, and the lower side wall of the boss handle is matched with a bracket dial for locking its position. The middle part of the bracket dial is hinged on the fall arrester housing, and a bracket dial spring is connected between the bottom end of the bracket dial and the fall arrester housing. A cover plate is installed at the top of the fall arrester housing.

[0006] Inside the housing of the anti-falling device, there is a left guide wheel mounting hole for installing the left guide wheel set; at the lower and upper parts of the housing of the anti-falling device, there are wire rope mounting holes for passing through the wire rope; at the upper part of the housing of the anti-falling device, there is a pressure bar groove for the pressure bar to pass through; at the lower part of the housing of the anti-falling device, there is a torsion spring fixing groove, on which there is a pressure bar mounting hole for installing the pressure bar torsion spring shaft, on the inner wall of the torsion spring fixing groove, there are torsion spring fixing columns, and on the side of the torsion spring fixing groove, there is a block spring column for connecting the bracket block spring; inside the housing of the anti-falling device, there is a bracket block mounting hole for installing the bracket block; inside the housing of the anti-falling device, there is a boss handle mounting hole for installing the boss handle, and on the side wall of the housing of the anti-falling device, there is a boss handle groove for the boss handle to pass through.

[0007] The left guide wheel set includes a left guide wheel shaft installed between the housing of the anti-falling device and the cover plate. The left guide wheel is installed on the left guide wheel shaft by key fitting, and the outer wall of the left guide wheel is in contact with the wire rope.

[0008] At the bottom end of the pressure bar, there is a pressure bar mounting hole for cooperating with the pressure bar torsion spring shaft. On the side of the pressure bar mounting hole, there is a torsion spring straight end mounting hole for fixing the torsion spring. On the outer wall of the pressure bar, there are a small eccentric guide wheel mounting hole for installing the small eccentric guide wheel and a large eccentric guide wheel mounting hole for installing the large eccentric guide wheel. At the top end of the pressure bar, there is an anti-slip sleeve mounting post, and an anti-slip sleeve is sleeved on the anti-slip sleeve mounting post.

[0009] The torsion spring includes a torsion spring body. One end of the torsion spring body is provided with a straight section, and the other end is provided with a mounting hole.

[0010] Outside the housing of the anti-falling device and at the end part of the boss handle, a ring buckle is movably installed;

[0011] The boss handle includes a boss shaft, which is rotationally supported on the housing of the anti-falling device. At the bottom end of the boss handle, there is a limit convex block for cooperating with the top end of the bracket block. At the end of the boss handle, there is a locking arc for cooperating with the wire rope. At the tail end of the boss handle, there is a ring buckle hole for installing the ring buckle.

[0012] On the bracket block, there are block limit convex blocks for self-locking contact with the boss handle. The upper support rod shaft on the bracket block is the shaft for controlling the rotation of the bracket block. The upper bracket spring fixing column on the bracket block is the column point for installing the bracket block spring.

[0013] The small eccentric guide wheel and the large eccentric guide wheel have the same structure. The size of the small eccentric guide wheel is smaller than that of the large eccentric guide wheel. The small eccentric guide wheel is installed near the end where the pressure bar torsion spring shaft is located;

[0014] The large eccentric guide wheel comprises an eccentric wheel, a guide arc is arranged on the outer wall of the eccentric wheel, and an eccentric wheel shaft is arranged at the center of the eccentric wheel.

[0015] The pressure rod torsion spring shaft comprises a fixed shaft section for cooperating with the fall arrester housing, a torsion spring installation section for cooperating with the torsion spring, and a pressure rod installation section for cooperating with the pressure rod.

[0016] A method for using a self-locking fall arrester comprises the following steps:

[0017] Step 1: Fixed connection of wire rope:

[0018] First, securely connect the wire rope that serves as a safety rope to the equipment you need to climb.

[0019] Step 2: The operator installs the connection with:

[0020] Connect the installation belt worn by the operator to the buckle of the boss handle of the self-locking fall arrester;

[0021] Step 3: Connect the wire rope to the self-locking fall arrester:

[0022] Push the pressure rod to the right to overcome the spring force of the torsion spring, thereby increasing the distance between the small eccentric guide wheel, the large eccentric guide wheel and the left guide wheel assembly. Pass the wire rope through the inside of the fall arrester housing and position it between the small eccentric guide wheel, the large eccentric guide wheel and the left guide wheel assembly.

[0023] Step 4: Workers climb upwards:

[0024] When a person climbs up, the buckle drives the boss handle to move upward. At this time, the bracket shift block moves to the right as the boss handle moves upward. The limit block of the boss handle is on the right side of the bracket shift block. At this time, the self-locking fall arrester is in the unlocked state, and the self-locking fall arrester moves upward smoothly along the wire rope.

[0025] Step 5: Fall prevention actions in emergency situations:

[0026] When a person misses a step or falls, the buckle drives the boss handle downward. Due to the triangular shape of the boss handle, the locking arc moves upward and contacts the side of the pressure rod, resulting in continuous compression. At this time, the limit protrusion on the boss handle moves to the left and passes the bracket shift block. Under the action of gravity, the pressure rod is continuously compressed. At this time, the bracket shift block limits the position of the limit protrusion to achieve self-locking, thereby ensuring personal safety.

[0027] Step 6: Unlock the self-locking fall arrester:

[0028] When the self-locking state needs to be released, the boss handle is manually pulled upwards, and the limit convex block is rotated to pass over the bracket shift block, thereby releasing the locking state of the boss handle on the wire rope.

[0029] The present invention has the following beneficial effects:

[0030] 1. The present invention is provided with a fall arrester housing, a steel wire rope, a left guide wheel, a pressure rod, a lower pressure rod wheel, an upper pressure rod wheel, an elastic member, a boss handle, a strut dial, a gland, and a ring buckle. When a worker working at height suddenly falls, the limiting convex block on the boss handle presses over the bracket dial under the action of gravity and contacts the pressure rod. Since the boss handle is triangular, the steel wire rope serving as the lifeline is clamped under the action of gravity. At this moment, the bracket dial is already on the other side of the convex block of the boss handle, thereby achieving the self-locking effect.

[0031] 2. The present invention is provided with a high-strength torsion spring at the lower part of the pressure rod, so that the pressure rod maintains a clamped state during normal operation, thereby ensuring that the fall arrester will not slip during use, and thus being safer and more reliable.

[0032] 3. The present invention is provided with high-strength springs at the lower part of the strut dial and the lower part of the pressure rod. When the boss handle is affected by gravity, the spring at the lower part of the bracket dial is stressed and buffered. When the limiting convex block on the boss handle crosses the bracket dial and the locking arc contacts the pressure rod, the spring at the lower part of the pressure rod plays a buffering role at this time, thereby achieving the secondary buffering effect and minimizing the injury to the human body under severe impact.

[0033] 4. The present invention adopts a combined assembly form, and all are mechanical self-locking, featuring safety, reliability, stability and durability.

[0034] 5. The present invention drives the pressure rod to rotate through the boss handle, realizes the clamping of the steel wire rope, and the lower part of the boss handle is provided with a self-locking device to prevent the rotation of the boss handle, with good safety, solving the problems that the traditional fall arrester cannot self-lock in time and has serious wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below with reference to the drawings and embodiments.

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0037] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0038] Figure 3 It is a sectional view of the present invention.

[0039] Figure 4 It is a schematic diagram of the structure of the fall arrester housing of the present invention.

[0040] Figure 5 It is an exploded view of the left guide wheel of the present invention.

[0041] Figure 6It is a schematic diagram of the pressure rod structure of the present invention.

[0042] Figure 7 It is a schematic diagram of the boss handle structure of the present invention.

[0043] Figure 8 It is a schematic diagram of the bracket dial block structure of the present invention.

[0044] Figure 9 It is a schematic diagram of the large eccentric wheel structure of the present invention.

[0045] Figure 10 It is a schematic diagram of the torsion spring structure of the present invention.

[0046] Figure 11 It is a schematic diagram of the pressure rod torsion spring shaft structure of the present invention.

[0047] Figure 12 It is a state diagram during the normal upward movement of the operator of the present invention.

[0048] Figure 13 It is a state diagram of the anti-falling action of the operator in an emergency of the present invention.

[0049] In the figure: 1. Anti-falling device housing; 2. Left guide wheel set; 3. Steel wire rope; 4. Pressure rod; 5. Torsion spring; 6. Boss handle; 7. Ring buckle; 8. Bracket dial block spring; 9. Bracket dial block; 10. Cover plate; 11. Anti-slip sleeve; 12. Large eccentric guide wheel; 13. Small eccentric guide wheel; 14. Pressure rod torsion spring shaft;

[0050] 101. Left guide wheel mounting hole; 102. Steel wire rope mounting hole; 103. Pressure rod mounting hole; 104. Dial block spring column; 105. Bracket dial block mounting hole; 106. Boss handle groove; 107. Boss handle mounting hole; 108. Pressure rod groove; 109. Torsion spring fixing column; 1010. Torsion spring fixing groove;

[0051] 201. Left guide wheel shaft; 202. Flat key; 203. Left guide wheel;

[0052] 401. Pressure rod mounting hole; 402. Small eccentric guide wheel mounting hole; 403. Large eccentric guide wheel mounting hole; 404. Anti-slip sleeve mounting column; 405. Torsion spring straight end mounting hole;

[0053] 501. Straight section; 502. Mounting hole;

[0054] 601. Boss shaft; 602. Locking arc; 603. Limit convex block; 604. Ring buckle hole;

[0055] 901. Dial block limit convex block; 902. Strut shaft; 903. Bracket spring fixing column;

[0056] 1201. Guide arc; 1202. Eccentric wheel; 1203. Eccentric wheel shaft;

[0057] 1401. Fixed shaft section; 1402. Torsion spring installation section; 1403. Pressure rod installation section. Detailed implementation mode

[0058] Example 1:

[0059] Please refer to Figures 1 to 13 , a self-locking anti-falling device, which includes an anti-falling device housing 1. At both ends of one side of the anti-falling device housing 1, a left guide wheel group 2 is symmetrically and rotatably installed. The left guide wheel group 2 forms a rolling fit with one side of a steel wire rope 3 passing through the inside of the anti-falling device housing 1; a pressure rod torsion spring shaft 14 is rotatably installed at the lower part of the anti-falling device housing 1 through a torsion spring 5, and a pressure rod 4 is installed on the pressure rod torsion spring shaft 14; a small eccentric guide wheel 13 and a large eccentric guide wheel 12 for cooperating with the steel wire rope 3 are rotatably installed on the pressure rod 4; a boss handle 6 is rotatably installed on the right side of the anti-falling device housing 1, and the lower side wall of the boss handle 6 is matched with a bracket dial block 9 for locking its position; the middle part of the bracket dial block 9 is hinged on the anti-falling device housing 1, and a bracket dial block spring 8 is connected between the bottom end of the bracket dial block 9 and the anti-falling device housing 1; a cover plate 10 is installed at the top end of the anti-falling device housing 1. By adopting the above self-locking anti-falling device, the rotation of the pressure rod 4 is driven by the boss handle 6, the clamping of the steel wire rope 3 can be realized, and a self-locking device is provided at the lower part of the boss handle to prevent the rotation of the boss handle, with good safety, and the problems that the traditional anti-falling device cannot lock itself in time and has serious wear are solved.

[0060] Further, a left guide wheel installation hole 101 for installing the left guide wheel group 2 is arranged inside the anti-falling device housing 1; a steel wire rope installation hole 102 for passing through the steel wire rope 3 is arranged at the lower and upper parts of the anti-falling device housing 1; a pressure rod groove 108 for passing out the pressure rod 4 is arranged at the upper part of the anti-falling device housing 1; a torsion spring fixing groove 1010 is arranged at the lower part of the anti-falling device housing 1, a pressure rod installation hole 103 for installing the pressure rod torsion spring shaft 14 is arranged on the torsion spring fixing groove 1010, a torsion spring fixing column 109 is arranged on the inner wall of the torsion spring fixing groove 1010, and a dial block spring column 104 for connecting the bracket dial block spring 8 is arranged on the side of the torsion spring fixing groove 1010; a bracket dial block installation hole 105 for installing the bracket dial block 9 is arranged inside the anti-falling device housing 1; a boss handle installation hole 107 for installing the boss handle 6 is arranged inside the anti-falling device housing 1, and a boss handle groove 106 for passing through the boss handle 6 is arranged on the side wall of the anti-falling device housing 1. Through the above anti-falling device housing 1, different components on the whole anti-falling device can be effectively installed, and then the effect of self-locking the steel wire rope 3 during use can be achieved.

[0061] Furthermore, the left guide wheel assembly 2 includes a left guide wheel shaft 201 mounted between the fall arrester housing 1 and the cover plate 10. A left guide wheel 203 is mounted on the left guide wheel shaft 201 via a flat key 202. The outer wall of the left guide wheel 203 contacts the wire rope 3. This left guide wheel assembly 2 guides the wire rope 3, ensuring smooth rotation while in contact with it. Furthermore, the left guide wheel 203 is machined with anti-slip grooves, providing both guiding and anti-slip functions and advantages.

[0062] Furthermore, the steel wire rope 3 is a lifeline provided for the fall arrester. During use, the steel wire rope 3 is first installed and fixed on the equipment that needs to be climbed.

[0063] Furthermore, the bottom end of the pressure rod 4 is provided with a pressure rod mounting hole 401 for cooperating with the pressure rod torsion spring shaft 14, and the side of the pressure rod mounting hole 401 is provided with a torsion spring straight end mounting hole 405 for fixing the torsion spring 5. The outer wall of the pressure rod 4 is provided with a small eccentric guide wheel mounting hole 402 for mounting the small eccentric guide wheel 13 and a large eccentric guide wheel mounting hole 403 for mounting the large eccentric guide wheel 12. The top end of the pressure rod 4 is provided with an anti-slip sleeve mounting column 404, and the anti-slip sleeve mounting column 404 is sleeved with an anti-slip sleeve 11. The above-mentioned pressure rod 4 is used to form a self-locking effect during its subsequent rotation.

[0064] Furthermore, the torsion spring 5 includes a torsion spring body, one end of which is provided with a straight section 501, and the other end is provided with a mounting hole 502. By providing a high-strength torsion spring at the bottom of the pressure rod, the pressure rod is kept in a clamped state during normal operation, thereby ensuring that the fall arrester does not slip during use, thereby increasing safety and reliability.

[0065] Furthermore, the bracket shift block spring 8 is a spring for controlling the rotation of the bracket shift block 9 and the self-locking of the boss handle 6 , and the other end is fixed on the shift block spring column 104 .

[0066] Further, a buckle 7 is movably installed on the outside of the fall arrester housing 1 and at the end of the boss handle 6. The buckle 7 is used to connect the safety belt worn on the operator.

[0067] Furthermore, the boss handle 6 includes a boss shaft 601, which is rotatably supported on the fall arrester housing 1. The bottom end of the boss handle 6 is provided with a limiting protrusion 603 for cooperating with the top end of the bracket shift block 9. The end of the boss handle 6 is provided with a locking arc 602 for cooperating with the wire rope 3. The tail end of the boss handle 6 is provided with a buckle hole 604 for installing the buckle 7. The above-mentioned boss handle 6 facilitates the rotation of the driving pressure rod 4 and realizes a reliable locking and fixing of the rotation position of the pressure rod 4.

[0068] Further, a limiting lug 901 is provided on the bracket shifting block 9 for self-locking contact with the boss handle 6. The rod shaft 902 on the bracket shifting block 9 is the shaft for controlling the rotation of the bracket shifting block 9, and the bracket spring fixing column 903 on the bracket shifting block 9 is the column point for installing the bracket shifting block spring 8. The bracket shifting block 9 facilitates the locking of the boss handle 6.

[0069] Further, the small eccentric guide wheel 13 and the large eccentric guide wheel 12 have the same structure. The size of the small eccentric guide wheel 13 is smaller than that of the large eccentric guide wheel 12, and the small eccentric guide wheel 13 is installed near the end where the pressure rod torsion spring shaft 14 is located. The large eccentric guide wheel 12 includes an eccentric wheel 1202, a guiding arc 1201 is provided on the outer wall of the eccentric wheel 1202, and an eccentric wheel shaft 1203 is provided at the central part of the eccentric wheel 1202. The small eccentric guide wheel 13 and the large eccentric guide wheel 12 are processed with anti-slip grooves, and the overall structure has the characteristics of being slidable but not rollable, further ensuring the pressing of the steel wire rope 3, and the guide wheels at this position have better interchangeability.

[0070] Further, the pressure rod torsion spring shaft 14 includes a fixed shaft section 1401 for cooperating with the anti-falling device housing 1, a torsion spring installation section 1402 for cooperating with the torsion spring 5, and a pressure rod installation section 1403 for cooperating with the pressure rod. The pressure rod torsion spring shaft 14 is for installing the pressure rod 4 and the torsion spring 5, and has the function of ensuring the rotation and clamping of the pressure rod 4.

[0071] Embodiment 2:

[0072] A using method of a self-locking anti-falling device includes the following steps:

[0073] Step 1, fixed connection of the steel wire rope 3:

[0074] First, fixedly connect the steel wire rope 3 serving as a safety rope on the equipment to be climbed.

[0075] Step 2, connection of the harness worn by the operator:

[0076] Connect the harness worn by the operator to the buckle 7 of the boss handle 6 of the self-locking anti-falling device.

[0077] Step 3, connection of the steel wire rope 3 and the self-locking anti-falling device:

[0078] Push the pressure rod 4 to the right to overcome the spring force of the torsion spring 5, thereby increasing the distance between the small eccentric guide wheel 13 and the large eccentric guide wheel 12 and the left guide wheel set 2. Pass the steel wire rope 3 through the inside of the anti-falling device housing 1 and place it between the small eccentric guide wheel 13 and the large eccentric guide wheel 12 and the left guide wheel set 2.

[0079] Step 4, the operator climbs upward for work:

[0080] See also Figure 12 When the person climbs up, the ring buckle 7 drives the boss handle 6 to move upward. At this time, the bracket block 9 moves to the right as the boss handle 6 moves upward. The limit block 603 of the boss handle 6 is on the right side of the bracket block 9. At this time, the self-locking fall arrester is in the unlocked state, and the self-locking fall arrester moves smoothly upward along the wire rope 3.

[0081] Step 5: Fall prevention actions in emergency situations:

[0082] See also Figure 13 When a person misses a step or falls, the buckle 7 drives the boss handle 6 to move downward. Since the boss handle 6 is triangular in shape, the locking arc 602 moves upward and contacts the side of the pressure rod 4, resulting in continuous compression. At this time, the limiting protrusion 603 on the boss handle 6 moves to the left and passes the bracket shift block 9. Under the action of gravity, the pressure rod 4 is continuously compressed. At this time, the bracket shift block 9 limits the position of the limiting protrusion 603 to achieve self-locking, thereby ensuring personal safety.

[0083] Step 6: Unlock the self-locking fall arrester:

[0084] When the self-locking state needs to be released, the boss handle 6 is manually pulled upward, and the limiting protrusion 603 is rotated to pass over the bracket shift block 9, thereby releasing the locking state of the boss handle 6 on the wire rope 3.

Claims

1. A self-locking anti-falling device, characterized in that, It includes a falling arrester housing (1). At both ends of one side of the falling arrester housing (1), left guide wheel sets (2) are symmetrically and rotatably installed. The left guide wheel sets (2) form a rolling fit with one side of a steel wire rope (3) passing through the interior of the falling arrester housing (1); a pressure lever torsion spring shaft (14) is rotatably installed at the lower part of the falling arrester housing (1) through a torsion spring (5), and a pressure lever (4) is installed on the pressure lever torsion spring shaft (14); a small eccentric guide wheel (13) and a large eccentric guide wheel (12) for cooperating with the steel wire rope (3) are rotatably installed on the pressure lever (4); a boss handle (6) is rotatably installed on the right side of the falling arrester housing (1), and the lower side wall of the boss handle (6) cooperates with a bracket dial block (9) for locking its position; the middle part of the bracket dial block (9) is hinged to the falling arrester housing (1), and a bracket dial block spring (8) is connected between the bottom end of the bracket dial block (9) and the falling arrester housing (1); a cover plate (10) is installed at the top end of the falling arrester housing (1). The boss handle (6) includes a boss shaft (601), the boss shaft (601) is rotatably supported on the falling arrester housing (1), a limit convex block (603) for cooperating with the top end of the bracket dial block (9) is arranged at the bottom end of the boss handle (6), and a locking arc (602) for abutting against the pressure lever (4) is arranged at the end of the boss handle (6). A dial block limit convex block (901) is arranged on the bracket dial block (9) for self-locking in contact with the boss handle (6). A strut shaft (902) on the bracket dial block (9) is the shaft for controlling the rotation of the bracket dial block (9), and a bracket spring fixing column (903) on the bracket dial block (9) is the column point for installing the bracket dial block spring (8).

2. The self-locking anti-falling device according to claim 1, characterized in that: Inside the falling arrester housing (1), a left guide wheel mounting hole (101) for installing the left guide wheel set (2) is provided; at the lower and upper parts of the falling arrester housing (1), steel wire rope mounting holes (102) for passing through the steel wire rope (3) are provided; at the upper part of the falling arrester housing (1), a pressure lever groove (108) for passing out the pressure lever (4) is provided; at the lower part of the falling arrester housing (1), a torsion spring fixing groove (1010) is provided. A pressure lever mounting hole (103) for installing the pressure lever torsion spring shaft (14) is provided on the torsion spring fixing groove (1010). A torsion spring fixing column (109) is arranged on the inner wall of the torsion spring fixing groove (1010), and a dial block spring column (104) for connecting the bracket dial block spring (8) is arranged on the side of the torsion spring fixing groove (1010); a bracket dial block mounting hole (105) for installing the bracket dial block (9) is provided inside the falling arrester housing (1); a boss handle mounting hole (107) for installing the boss handle (6) is provided inside the falling arrester housing (1), and a boss handle groove (106) for passing through the boss handle (6) is provided on the side wall of the falling arrester housing (1).

3. The self-locking anti-falling device according to claim 1, characterized in that: The left guide wheel set (2) includes a left guide wheel shaft (201) installed between the falling arrester housing (1) and the cover plate (10). A left guide wheel (203) is installed on the left guide wheel shaft (201) by means of a flat key (202). The outer wall of the left guide wheel (203) is in contact with the wire rope (3).

4. The self-locking anti-falling device according to claim 1, characterized in that: At the bottom end of the pressure rod (4), there is a pressure rod mounting hole (401) for cooperating with the pressure rod torsion spring shaft (14). On the side of the pressure rod mounting hole (401), there is a torsion spring straight end mounting hole (405) for fixing the torsion spring (5). On the outer wall of the pressure rod (4), there are a small eccentric guide wheel mounting hole (402) for installing the small eccentric guide wheel (13) and a large eccentric guide wheel mounting hole (403) for installing the large eccentric guide wheel (12). At the top end of the pressure rod (4), there is an anti-slip sleeve mounting post (404), and an anti-slip sleeve (11) is sleeved on the anti-slip sleeve mounting post (404).

5. The self-locking anti-falling device according to claim 1, characterized in that: The torsion spring (5) includes a torsion spring body. One end of the torsion spring body is provided with a straight section (501), and the other end is provided with a mounting hole (502).

6. The self-locking anti-falling device according to claim 1, characterized in that: Outside the falling arrester housing (1) and at the end of the boss handle (6), a ring buckle (7) is movably installed; At the tail end of the boss handle (6), there is a ring buckle hole (604) for installing the ring buckle (7).

7. The self-locking anti-falling device according to claim 1, characterized in that: The small eccentric guide wheel (13) and the large eccentric guide wheel (12) have the same structure. The size of the small eccentric guide wheel (13) is smaller than that of the large eccentric guide wheel (12). The small eccentric guide wheel (13) is installed near the end where the pressure rod torsion spring shaft (14) is located; The large eccentric guide wheel (12) includes an eccentric wheel (1202). On the outer wall of the eccentric wheel (1202), there is a guiding arc (1201). At the central part of the eccentric wheel (1202), there is an eccentric wheel shaft (1203).

8. The self-locking anti-falling device according to claim 1, characterized in that: The pressure rod torsion spring shaft (14) includes a fixed shaft section (1401) for cooperating with the falling arrester housing (1), a torsion spring mounting section (1402) for cooperating with the torsion spring (5), and a pressure rod mounting section (1403) for cooperating with the pressure rod.

9. The usage method of a self-locking type falling arrester according to any one of claims 1 - 8, characterized in that: Step 1, fixed connection of the wire rope (3): First, fixedly connect the wire rope (3) serving as a safety rope to the equipment to be climbed; Step 2, connection of the harness worn by the operator: Connect the harness worn by the operator to the ring buckle (7) of the boss handle (6) of the self-locking type falling arrester; Step 3, connection between the wire rope (3) and the self-locking type falling arrester: Push the pressure rod (4) to the right to overcome the spring force of the torsion spring (5), thereby increasing the distance between the small eccentric guide wheel (13) and the large eccentric guide wheel (12) and the left guide wheel set (2). Pass the wire rope (3) through the inside of the falling arrester housing (1) and place it between the small eccentric guide wheel (13), the large eccentric guide wheel (12) and the left guide wheel set (2); Step 4, the operator climbs up for work: During the upward climbing process of a person, the snap hook (7) drives the boss handle (6) to move upward. At this time, the bracket slider (9) moves to the right as the boss handle (6) moves upward. The limit lug (603) of the boss handle (6) is on the right side of the bracket slider (9). At this time, the self-locking anti-falling device is in the unlocked state, and the self-locking anti-falling device moves smoothly upward along the steel wire rope (3); Step Five, anti-falling action in case of emergency: When a person steps on air or falls, the snap hook (7) drives the boss handle (6) to move downward. Since the boss handle (6) is triangular, the locking arc (602) moves upward and contacts the side of the pressure bar (4) resulting in continuous pressing. At this moment, the limit lug (603) on the boss handle (6) moves to the left, crosses the bracket slider (9), and under the action of gravity, the pressure bar (4) is continuously pressed. At this moment, the bracket slider (9) restricts the position of the limit lug (603) to achieve self-locking, thereby ensuring personal safety; Step Six, unlocking of the self-locking anti-falling device: When it is necessary to release the self-locked state, manually pull up the boss handle (6). At this time, the limit lug (603) is rotated, and then crosses the bracket slider (9), thereby releasing the locking state of the boss handle (6) on the steel wire rope (3).

Images