Rope grabbing device for lifting rescue

Abstract

The invention relates to the technical field of rock climbing protection, and discloses a rope grabbing device for lifting rescue, the rope grabbing device comprises a first outer shell, a second outer shell and a rope, an adjusting locking assembly and a fixing locking assembly are arranged between the first outer shell and the second outer shell, and a hook piece fixing assembly is rotatably mounted between the first outer shell and the second outer shell; the first outer shell comprises a main shell, and a first fixing groove and a limiting groove are formed in one end of the main shell. According to the rope grabbing device for lifting rescue, the first outer shell can be conveniently and rapidly installed through an installation column and a positioning block, a fixed locking block is rotationally installed at the end close to the first outer shell through a third rotating column, the fixed locking block can rotate relative to the first outer shell through the arrangement of the third rotating column, and when a rope is locked, the fixed locking block can rotate relative to the first outer shell; the angle of the fixed locking block can be automatically adjusted according to the position and stress condition of the rope, so that the second locking groove is better attached to the rope, and the locking effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rescue and protection, in particular to a rope grabber for lifting and rescue. Background Art

[0002] In numerous scenarios, such as firefighting, rescue operations, outdoor climbing, and construction projects, the use of elevators to raise and lower people or objects is common. Especially during outdoor climbing and rescue operations, falls can occur at any time due to various reasons, such as exhaustion, operational errors, and loosened rock supports. Without reliable protection, a fall poses a serious safety threat to the climber, potentially resulting in bodily injury or even life-threatening consequences. Rope grabs and fall prevention mechanisms are core components of elevators, working in conjunction with the elevator. Therefore, a rope grab is often used to thread the rope, utilizing the elevator's power to wind the rope, ensuring that people or objects can continue to ascend or descend under the protection of the rope grab.

[0003] Rope grabs are divided into cam-type rope grabs and tube-type rope grabs. Both cam-type rope grabs and tube-type rope grabs have less than ideal braking effects when a climber falls at high speed, and are unable to quickly and effectively control the falling speed, thereby increasing the risk of injury to the climber.

[0004] As an existing solution, Chinese invention patent publication number CN109529218B specifically discloses a rope grab with upper and lower guide wheels as auxiliary components, enabling smooth sliding on the wire rope and maintaining the stability of the wire rope. A reinforcement plate reinforces the fixed plate in the event of a fall, improving its impact resistance and preventing it from detaching from the wire rope. A lever is key to compressing the wire rope to create a locking and anti-fall effect in the event of a fall. Torsion springs in the lever and reinforcement plate keep the rope grab in a locked state at all times, enabling single-handed operation. The rope grab also features a double U-bend reinforcement structure at key stress points, improving ease and safety. While this structure allows single-handed operation, it is difficult to automatically adjust the angle based on the rope's position and stress, resulting in poor locking effectiveness. Furthermore, the lack of a hook locking mechanism can easily cause the hook to fall off and the rope to slip, making quick locking difficult. Summary of the Invention

[0005] In view of the problems that a rope grab is inconvenient to operate and has an unsatisfactory quick locking effect when operated with one hand, the object of the present invention is to provide a rope grab for lifting and rescue, which is easy to operate with one hand and can achieve quick locking when the rope slides.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A rope grab for lifting and rescue, comprising a first outer shell, a second outer shell and a rope, an adjustment locking assembly and a fixed locking assembly being provided between the first outer shell and the second outer shell, and a hook fixing assembly being rotatably mounted between the first outer shell and the second outer shell;

[0008] The adjustment locking assembly includes an adjustment locking block and a first limiting block. A first locking groove is formed on the outer edge of the adjustment locking block, and the cross-section of the first locking groove is a "C"-shaped structure; the first limiting block is located in the first locking groove, and a second limiting block is fixedly installed on one end of the fixed locking block adjacent to the second locking groove, and the first limiting block and the second limiting block are in contact with the rope;

[0009] The fixed locking assembly includes a fixed locking block, and a second locking groove is formed on the outer edge of the fixed locking block, and the second cross section of the locking groove is a "C"-shaped structure;

[0010] The rope is in contact with the first locking groove and the second locking groove.

[0011] Through the above technical solution, the first limit block and the second limit block are in contact with the rope. When the rope is subjected to tension or falls, the first limit block and the second limit block will squeeze the rope, increasing the friction between the rope and the first locking groove and the second locking groove, which can effectively prevent the rope from sliding, thereby locking the rope and playing an anti-falling role. In addition, the setting of the first limit block and the second limit block improves the locking and anti-falling effect of the rope grabber on the rope.

[0012] Preferably, the first outer shell includes a main shell, one end of the main shell is provided with a first fixing groove and a limiting groove, and an extension bar is fixedly installed on one end of the main shell close to the adjustment locking assembly;

[0013] The second outer shell includes a connecting shell, and a fourth fixing groove and a second groove are formed on one end of the connecting shell close to the main shell.

[0014] Preferably, a first hook groove is provided at one end of the main shell, and a second hook groove is provided at one end of the connecting shell close to the main shell. The first hook groove and the second hook groove have the same shape, and a hook is provided between the first hook groove and the second hook groove.

[0015] Through the above technical solution, the hook can be embedded in the first hook groove and the second hook groove, and the two hook grooves are used to form a two-way limit for the hook. When in use, because the hook is vertically downward, it can drive the hook fixing assembly to resist the fixed locking assembly, so that the rope can be locked between the adjustable locking assembly and the fixed locking assembly.

[0016] Preferably, a mounting groove is provided at one end of the hook fixing assembly, and the hook passes through the first hook groove, the mounting groove and the second hook groove.

[0017] Through the above technical solution, through the cooperation of the first hook groove, the installation groove and the second hook groove, when the lock needs to be released, the hook can be moved in the first hook groove, the installation groove and the second hook groove, and then the hook fixing assembly is driven to rotate, and the fixation of the fixed locking assembly is released at the same time, and the locking state with the rope can be released.

[0018] Preferably, the fixing locking assembly further comprises a positioning groove, the cross section of which is a semi-C-shaped structure, and the positioning groove abuts against the hook fixing assembly.

[0019] Through the above technical solution, the positioning groove of the semi-C-shaped structure is offset against the hook fixing assembly. By utilizing the opening characteristics of the semi-C shape, it can play a limiting role with the hook fixing assembly when abutting, thereby avoiding the locking effect between the adjustment locking assembly and the fixed locking assembly being released during use, thereby preventing it from falling.

[0020] Preferably, a second fixing groove is provided at one end of the main shell, a third fixing groove is provided at one end of the connecting shell, and the hook fixing assembly includes a fixing block, one end of the fixing block is rotatably mounted with a mounting column, and the mounting column passes through the second fixing groove and the third fixing groove.

[0021] Through the above technical solution, the mounting post on the fixed block passes through the second fixing slot of the main shell and the third fixing slot of the connecting shell. The mounting post serves as a rotation axis, so that the hook fixing assembly can rotate relative to the first outer shell and the second outer shell around the mounting post, and then switch between locking and releasing.

[0022] Preferably, the fixed block is fixedly installed with a limit plate near one end of the first outer shell, and a retaining spring is provided at one end of the mounting column. One end of the retaining spring contacts the extension bar, and the other end of the retaining spring away from the extension bar contacts the limit plate.

[0023] Through the above technical solution, the limit plate is fixed on the fixed block, which plays an axial limiting role on the mounting column to prevent the mounting column from falling off in the direction close to the first outer shell. One end of the retaining spring contacts the extension bar, and the other end contacts the limit plate. The elastic force of the retaining spring is used to press the mounting column tightly in a fixed position, eliminating the gap between the mounting column and the extension bar and the limit plate, ensuring that the mounting column will not loosen due to vibration or force during operation, ensuring the stability of the rotational connection between the first outer shell and the second outer shell, and making the structure of the rope grabber more reliable.

[0024] Preferably, an adjustment groove is provided at one end of the main shell, and a first groove is provided at one end of the connecting shell close to the main shell. The main shell is rotatably installed with a first rotating column through the first groove, and a second rotating column is fixedly installed at the end of the adjustment lock block away from the first rotating column. The second rotating column is slidably connected to the adjustment groove and the first groove, and a limiting cap is fixedly installed at one end of the second rotating column.

[0025] Preferably, the adjusting lock block is provided with a first card slot and a second card slot at one end close to the first locking slot, and the first card slot and the second card slot abut against the positioning block.

[0026] Through the above technical solution, the main shell body is installed with the first rotating column through the first groove, so that the adjusting lock block can rotate around the first rotating column, and the second rotating column is slidably connected with the adjusting groove and the first groove. When the adjusting lock block rotates, the second rotating column slides in the adjusting groove and the first groove, thereby changing the position and angle of the adjusting lock block. The limit cap is fixed at one end of the second rotating column to prevent the second rotating column from falling out of the adjusting groove and the first groove. Through the cooperation between the two, adjustment of two states can be achieved.

[0027] Preferably, the first outer shell is rotatably mounted with a third rotating column via a mounting column and a positioning block, and the fixed locking block is rotatably mounted on one end close to the first outer shell.

[0028] Through the above technical solution, the first outer shell can be quickly installed through the installation column and the positioning block, and the fixed locking block is rotatably installed at one end close to the first outer shell through the third rotating column. The setting of the third rotating column enables the fixed locking block to rotate relative to the first outer shell. When locking the rope, the fixed locking block can automatically adjust the angle according to the position and force conditions of the rope, so that the second locking groove fits better with the rope, thereby improving the locking effect.

[0029] Compared with the prior art, the rope grab solution for lifting and rescue provided by the present invention has the following beneficial effects:

[0030] 1. The first and second hook grooves of this rescue rope grabber limit the hook in the horizontal and vertical directions to prevent it from falling off. The first and second limit blocks significantly increase the locking friction by squeezing the rope, effectively preventing the rope from sliding and ensuring that the lift can be quickly locked when it falls.

[0031] 2. This lifting and rescue rope grabber is easy to install quickly through the first outer shell via the mounting post and positioning block. The fixed locking block is rotatably mounted on one end near the first outer shell via the third rotating post. The third rotating post enables the fixed locking block to rotate relative to the first outer shell. When locking the rope, the fixed locking block can automatically adjust its angle according to the position and force of the rope, so that the second locking groove and the rope are better fitted, thereby improving the locking effect.

[0032] 3. In the rope grab for lifting and rescue, the limit plate is fixed on the fixed block, which plays an axial limiting role on the mounting column to prevent the mounting column from falling off in the direction close to the first outer shell. One end of the retaining spring contacts the extension bar, and the other end contacts the limit plate. The elastic force of the retaining spring presses the mounting column tightly in a fixed position, eliminating the gap between the mounting column and the extension bar and the limit plate. This ensures that the mounting column will not loosen due to vibration or force during operation, ensures the stability of the rotational connection between the first outer shell and the second outer shell, and makes the structure of the rope grab more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram from a first perspective of the three-dimensional structure of the lifting and rescue rope grabbing device of the present invention;

[0034] Figure 2 The second perspective diagram of the three-dimensional structure of the lifting and rescue rope grabbing device in the present invention Figure 2 ;

[0035] Figure 3 The third perspective diagram of the three-dimensional structure of the lifting and rescue rope grabbing device in the present invention Figure 3 ;

[0036] Figure 4 This is a first-perspective schematic diagram of the explosion structure of the lifting and rescue rope grabbing device of the present invention;

[0037] Figure 5 A schematic diagram of the explosion structure of the lifting and rescue rope grabbing device of the present invention from a second perspective;

[0038] Figure 6 This is a schematic diagram of the three-dimensional structure of the adjustment locking assembly of the present invention from a first perspective;

[0039] Figure 7 A schematic diagram of the third perspective structure of the adjusting locking assembly of the present invention;

[0040] Figure 8 A schematic diagram of the third-view perspective structure of the adjustable locking assembly of the present invention;

[0041] Figure 9 Schematic diagram of the installation structure between the adjusting lock block and the first locking groove in the present invention;

[0042] Figure 10 This is a schematic diagram of the three-dimensional structure of the fixed locking assembly of the present invention from a first perspective;

[0043] Figure 11 This is a schematic diagram of the third perspective structure of the fixed locking assembly of the present invention;

[0044] Figure 12 This is a schematic diagram of the three-dimensional structure of the hook fixing assembly in the present invention from a first perspective;

[0045] Figure 13 A schematic diagram of the third perspective structure of the hook fixing assembly of the present invention;

[0046] Figure 14 This is a schematic diagram of the three-dimensional structure of the hook fixing assembly in the present invention from a third perspective.

[0047] Wherein: 1. First outer shell; 101. Main shell; 102. Adjustment slot; 103. First fixing slot; 104. Second fixing slot; 105. First hook slot; 106. Limiting slot; 107. Extension bar; 2. Second outer shell; 201. Connecting shell; 202. Second hook slot; 203. Third fixing slot; 204. Fourth fixing slot; 205. First groove; 206. Second groove; 3. Rope; 4. Adjustment locking assembly; 401. Adjustment lock block; 402. First rotating column; 403 , second rotating column; 404, limiting cap; 405, first locking groove; 406, first limiting block; 407, first clamping slot; 408, second clamping slot; 5, fixed locking assembly; 501, fixed locking block; 502, third rotating column; 503, second locking groove; 504, second limiting block; 505, positioning slot; 6, hook fixing assembly; 601, fixed clamping block; 602, mounting slot; 603, mounting column; 604, retaining spring; 605, limiting plate; 606, positioning block; 7, hook. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] Example 1:

[0050] like Figure 1-14 As shown, the present invention provides a rope grab for lifting and rescue, comprising a first outer shell 1, a second outer shell 2 and a rope 3, an adjustment locking assembly 4 and a fixed locking assembly 5 are provided between the first outer shell 1 and the second outer shell 2, and a hook fixing assembly 6 is rotatably installed between the first outer shell 1 and the second outer shell 2.

[0051] The first outer shell 1 includes a main shell 101, one end of which is provided with a first fixing groove 103 and a limiting groove 106, and an extension bar 107 is fixedly mounted on the end of the main shell 101 close to the adjustment locking assembly 4;

[0052] The second outer shell 2 includes a connecting shell 201 . A fourth fixing slot 204 and a second groove 206 are formed on one end of the connecting shell 201 close to the main shell 101 .

[0053] The adjustment locking assembly 4 includes an adjustment locking block 401 , and a first locking groove 405 is formed on the outer edge of the adjustment locking block 401 . The cross section of the first locking groove 405 is a “C”-shaped structure.

[0054] The fixed locking assembly 5 includes a fixed locking block 501, and a second locking groove 503 is formed on the outer edge of the fixed locking block 501. The cross section of the second locking groove 503 is a "C"-shaped structure;

[0055] The rope 3 contacts the first locking groove 405 and the second locking groove 503 .

[0056] On this basis, see Figures 6 to 8 In this embodiment, the adjustment locking assembly 4 further includes a first limiting block 406 and a second limiting block 504 .

[0057] The first limit block 406 is located in the first locking groove 405 , and the second limit block 504 is fixedly installed on one end of the fixed locking block 501 close to the second locking groove 503 . The first limit block 406 and the second limit block 504 are in contact with the rope 3 .

[0058] In this way, the first limit block and the second limit block are in contact with the rope. When the rope is subjected to tension or falls, the first limit block and the second limit block will squeeze the rope, increasing the friction between the rope and the first locking groove and the second locking groove, which can effectively prevent the rope from sliding, thereby locking the rope and playing an anti-falling role. In addition, the setting of the first limit block and the second limit block improves the locking and anti-falling effect of the rope grabber on the rope.

[0059] See further Figure 9 The adjustment lock block 401 in the present adjustment lock assembly 4 has a first engaging groove 407 and a second engaging groove 408 formed at one end near the first locking groove 405. The first engaging groove 407 and the second engaging groove 408 abut against the positioning block 606. With this arrangement, the main housing 101 is provided with the first rotating post 402 via the first groove 205, so that the adjustment lock block 401 can rotate around the first rotating post 402. The second rotating post 403 is slidably connected to the adjustment groove 102 and the first groove 205. When the adjustment lock block 401 rotates, the second rotating post 403 slides within the adjustment groove 102 and the first groove 205, thereby changing the position and angle of the adjustment lock block 401. The limiting cap 404 is fixed to one end of the second rotating post 403 to prevent the second rotating post 403 from falling out of the adjustment groove 102 and the first groove 205. Through the cooperation between the two, two states of adjustment can be achieved.

[0060] Furthermore, this embodiment further provides a first hook groove 105 at one end of the main shell 101, and a second hook groove 202 at one end of the connecting shell 201 close to the main shell 101. The first hook groove 105 and the second hook groove 202 have the same shape, and a hook 7 is provided between the first hook groove 105 and the second hook groove 202.

[0061] With such arrangement, the hook 7 can be embedded in the first hook groove 105 and the second hook groove 202, and the two hook grooves are used to form a two-way limit for the hook 7. When in use, since the hook 7 is vertically downward, it can drive the hook fixing component 6 to press against the fixed locking component 5, so that the rope 3 can be locked between the adjustment locking component 4 and the fixed locking component 5.

[0062] On this basis, see further Figures 12 to 14 In this embodiment, a mounting slot 602 is formed at one end of the hook fixing assembly 6, and the hook 7 passes through the first hook slot 105, the mounting slot 602, and the second hook slot 202. With this arrangement, through the cooperation of the first hook slot 105, the mounting slot 602, and the second hook slot 202, when the lock needs to be released, the hook 7 can be moved between the first hook slot 105, the mounting slot 602, and the second hook slot 202, thereby driving the hook fixing assembly 6 to rotate, simultaneously releasing the fixation of the fixed locking assembly 5 and releasing the lock state with the rope 3.

[0063] Furthermore, the hook fixing assembly 6 includes a fixing block 601 and a mounting post 603, wherein the fixing block 601 is rotatably mounted with the mounting post 603 on one end. In conjunction therewith, a second fixing slot 104 is defined at one end of the main housing 101, and a third fixing slot 203 is defined at one end of the connecting housing 201. The mounting post 603 passes through both the second fixing slot 104 and the third fixing slot 203.

[0064] In this arrangement, the mounting post 603 on the fixed block 601 passes through the second fixing slot 104 of the main shell 101 and the third fixing slot 203 of the connecting shell 201. The mounting post 603 serves as a rotation axis, enabling the hook fixing assembly 6 to rotate relative to the first outer shell 1 and the second outer shell 2 around the mounting post 603, and then switch between locking and releasing.

[0065] As a further arrangement, the fixed block 601 in the hook fixing assembly 6 is fixedly installed with a limiting plate 605 near one end of the first outer shell 1, and a retaining spring 604 is provided at one end of the mounting column 603. One end of the retaining spring 604 is in conflict with the extension bar 107, and the other end of the retaining spring 604 away from the extension bar 107 is in conflict with the limiting plate 605.

[0066] With this arrangement, the limit plate 605 is fixed on the fixed block 601, which plays an axial limiting role on the mounting column 603, preventing the mounting column 603 from falling off in the direction close to the first outer shell 1. One end of the retaining spring 604 contacts the extension bar 107, and the other end contacts the limit plate 605. The elastic force of the retaining spring 604 is used to press the mounting column 603 tightly in the fixed position, eliminating the gap between the mounting column 603 and the extension bar 107 and the limit plate 605, ensuring that the mounting column 603 will not loosen due to vibration or force during operation, ensuring the stability of the rotational connection between the first outer shell 1 and the second outer shell 2, and making the structure of the rope grabber more reliable.

[0067] On this basis, see further Figure 10-11 In this embodiment, the fixed locking assembly 5 further includes a positioning groove 505 having a semi-C-shaped cross-section. The positioning groove 505 abuts against the hook fixing assembly 6. With this arrangement, the semi-C-shaped positioning groove 505 abuts against the hook fixing assembly 6. The semi-C-shaped opening allows the positioning groove 505 to act as a limiter against the hook fixing assembly 6 when abutting against the hook fixing assembly 6, preventing the locking effect between the adjustment locking assembly 4 and the fixed locking assembly 5 from being released during use, thereby preventing the locking assembly 5 from falling.

[0068] As a further explanation, this embodiment scheme has an adjustment groove 102 at one end of the main shell 101, and a first groove 205 is formed at the end of the connecting shell 201 close to the main shell 101. The main shell 101 is rotatably installed with a first rotating column 402 through the first groove 205, and the end of the adjustment lock block 401 away from the first rotating column 402 is fixedly installed with a second rotating column 403. The second rotating column 403 is slidably connected to the adjustment groove 102 and the first groove 205, and a limiting cap 404 is fixedly installed at one end of the second rotating column 403.

[0069] With such arrangement, the first limit block 406 and the second limit block 504 are in contact with the rope 3. When the rope 3 is subjected to tension or falls, the first limit block 406 and the second limit block 504 will exert an extrusion effect on the rope 3, thereby increasing the friction between the rope 3 and the first locking groove 405 and the second locking groove 503, which can effectively prevent the rope 3 from sliding, thereby locking the rope 3 and playing an anti-falling role. In addition, the arrangement of the first limit block 406 and the second limit block 504 improves the locking and anti-falling effect of the rope grab on the rope 3.

[0070] On this basis, in this embodiment, the first outer shell 1 is rotatably mounted with a third rotating column 502 via a mounting column 603 , a positioning block 606 , and a fixed locking block 501 on one end close to the first outer shell 1 .

[0071] With such arrangement, quick installation can be facilitated through the first outer shell 1 through the mounting column 603 and the positioning block 606, and the fixed locking block 501 is rotatably installed at one end close to the first outer shell 1 through the third rotating column 502. The arrangement of the third rotating column 502 enables the fixed locking block 501 to rotate relative to the first outer shell 1. When locking the rope 3, the fixed locking block 501 can automatically adjust the angle according to the position and force conditions of the rope 3, so that the second locking groove 503 fits better with the rope 3, thereby improving the locking effect.

[0072] Example 2:

[0073] This example is directed to the rope grab for lifting and rescue provided in the first embodiment, and its operation process is explained with examples in conjunction with the corresponding drawings.

[0074] See also Figures 1 to 14 When the present rope grab for lifting and rescue is in use, the locked state is achieved when the hook 7 is subjected to vertical downward force, which drives the hook fixing assembly 6 to rotate around the mounting column 603, causing the hook fixing assembly 6 to rest against the positioning groove 505 of the fixed locking assembly 5. At this time, the adjusting locking block 401 of the adjusting locking assembly 4 and the fixed locking block 501 of the fixed locking assembly 5 clamp the rope 3 through the "C"-shaped first locking groove 405 and the second locking groove 503. At the same time, the first limit block 406 and the second limit block 504 squeeze the rope 3, increasing the friction force, thereby locking the rope 3 and preventing the lift from falling.

[0075] When the lock state needs to be released, the hook 7 is pushed to move in the first hook groove 105, the installation groove 602 and the second hook groove 202, driving the hook fixing assembly 6 to rotate so that it is out of the limit of the positioning groove 505. At this time, the adjusting lock block 401 can rotate around the first rotating column 402, and the second rotating column 403 slides in the adjusting groove 102 and the first groove 205, changing the contact state of the first locking groove 405 and the rope 3, thereby releasing the lock.

[0076] When the structural adjustment and positioning adjustment lock block 401 rotates, the first slot 407 and the second slot 408 cooperate with the positioning block 606 to fix the position of the adjustment lock block 401 and ensure the stability of the locking force. The fixed lock block 501 rotates through the third rotating column 502 and can automatically adjust the angle locking fit according to the position of the rope 3.

[0077] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A rope grab for lifting and rescue, comprising a first outer shell (1), a second outer shell (2) and a rope (3), characterized in that: An adjustment locking assembly (4) and a fixed locking assembly (5) are provided between the first outer shell (1) and the second outer shell (2), and a hook fixing assembly (6) is rotatably installed between the first outer shell (1) and the second outer shell (2); The adjusting locking assembly (4) comprises an adjusting locking block (401), a first limiting block (406), and a second limiting block (504); a first locking groove (405) is provided at the outer edge of the adjusting locking block (401); the first limiting block (406) is located in the first locking groove (405); a second limiting block (504) is fixedly installed at one end of the fixed locking block (501) close to the second locking groove (503); the first limiting block (406) and the second limiting block (504) are in contact with the rope (3); The fixed locking assembly (5) comprises a fixed locking block (501), and a second locking groove (503) is provided at the outer edge of the fixed locking block (501); The rope (3) is in contact with the first locking groove (405) and the second locking groove (503).

2. A rope grab for lifting and rescue according to claim 1, characterized in that: The first outer shell (1) comprises a main shell (101), one end of the main shell (101) is provided with a first fixing groove (103) and a limiting groove (106), and the other end of the main shell (101) is provided with a second fixing groove (104); An extension strip (107) is fixedly mounted on one end of the main housing (101) close to the adjustment locking assembly (4); The second outer shell (2) comprises a connecting shell (201), wherein a fourth fixing groove (204) and a second groove (206) are provided at one end of the connecting shell (201) close to the main shell (101), and a third fixing groove (203) is provided at the other end of the connecting shell (201).

3. The rope grab for lifting and rescue according to claim 2, characterized in that: A first hook groove (105) is provided at one end of the main shell (101), and a second hook groove (202) is provided at one end of the connecting shell (201) close to the main shell (101). The first hook groove (105) and the second hook groove (202) have the same shape, and a hook (7) is provided between the first hook groove (105) and the second hook groove (202).

4. The rope grab for lifting and rescue according to claim 2, characterized in that: The hook fixing assembly (6) comprises a fixing block (601), one end of which is rotatably mounted with a mounting post (603), and the mounting post (603) passes through the second fixing slot (104) and the third fixing slot (203).

5. The rope grab for lifting and rescue according to claim 4, characterized in that: The fixed block (601) is fixedly mounted with a limiting plate (605) near one end of the first outer shell (1); a retaining spring (604) is provided at one end of the mounting column (603); one end of the retaining spring (604) contacts the extension bar (107); and the other end of the retaining spring (604) away from the extension bar (107) contacts the limiting plate (605).

6. The rope grab for lifting and rescue according to claim 1, characterized in that: The fixed locking assembly (5) further comprises a positioning groove (505), the cross section of the positioning groove (505) being a semi-C-shaped structure, and the positioning groove (505) abuts against the hook fixing assembly (6).

7. The rope grab for lifting and rescue according to claim 7, characterized in that: An adjustment groove (102) is provided at one end of the main shell (101), a first groove (205) is provided at one end of the connecting shell (201) close to the main shell (101), a first rotating column (402) is rotatably mounted on the main shell (101) through the first groove (205), a second rotating column (403) is fixedly mounted on one end of the adjustment lock block (401) away from the first rotating column (402), the second rotating column (403) is slidably connected to the adjustment groove (102) and the first groove (205), and a limiting cap (404) is fixedly mounted on one end of the second rotating column (403).

8. The rope grab for lifting and rescue according to claim 7 is characterized in that: The adjusting lock block (401) is provided with a first card slot (407) and a second card slot (408) at one end close to the first locking slot (405), and the first card slot (407) and the second card slot (408) abut against the positioning block (606).

9. The rope grab for lifting and rescue according to claim 7, characterized in that: The first outer shell (1) is rotatably mounted with a third rotating column (502) via a mounting column (603) and a positioning block (606), and the fixed locking block (501) is rotatably mounted on one end close to the first outer shell (1).

Images