A type of wire rope breaker for coal mines

Abstract

This utility model relates to the technical field of auxiliary devices for mining wire ropes, and discloses a wire rope cutter for coal mines. It includes a lower fixing groove fixed to a base, with a matching upper fixing groove hinged to the rear side of the lower fixing groove. A locking device is provided on the front side of the upper fixing groove. A knife cylinder is vertically fixed to the middle of the outer side of the upper fixing groove. A rope-cutting knife is movably inserted into the knife cylinder, passing through the upper fixing groove. The handle of the rope-cutting knife passes through the upper fixing groove, and the end of the handle located outside the upper fixing groove has a stopper. The end of the handle located inside the upper fixing groove has a wedge-shaped or blade-shaped cutting head. When the upper fixing groove is in the engaged position, the cutting head faces the lower fixing groove. Rope pressers are installed on both sides of the rope-cutting knife in the upper fixing groove. When the upper fixing groove is in the engaged position, each of the two rope pressers has an upwardly protruding rope-bearing groove on the bottom wall of the lower fixing groove, directly opposite the two rope pressers.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for mining steel wire ropes, and in particular to a rope breaker, specifically a steel wire rope breaker for coal mines. Background Technology

[0002] In coal mines, a large number of steel wire ropes are used in various transportation equipment. During the use of steel wire ropes, in some emergency situations or scenarios with high time requirements, it is necessary to cut the steel wire ropes to an appropriate length. Traditional methods of cutting ropes mainly involve manual sawing and repeated manual chopping.

[0003] Among them, manually sawing and repeatedly chopping steel wire ropes have the following problems:

[0004] 1) Low operational safety: The repeated chopping of the steel wire rope by manpower involves one operator using a sledgehammer to repeatedly strike and cut the steel wire rope, while another operator uses tools to fix the steel wire rope. During the operation, iron slag is easily generated and can easily injure the operators. In addition, the entire operation requires the cooperation of two people. If the striking position is not correct, it is easy to injure the hands.

[0005] 2) Low work efficiency: For thicker steel wire ropes, it takes many people to repeatedly strike with sledgehammers and axes to cut them, which is time-consuming and laborious. Moreover, the speed of cutting by hand is even slower, especially in some emergency situations or scenarios with high time requirements. This method is difficult to meet the needs of quick rope cutting.

[0006] 3) High skill requirements for operators: Operators need to master a certain amount of striking force and angle to ensure effective striking of the wire rope and avoid striking other parts that could damage the equipment or injure personnel. If the operator is inexperienced or unskilled, the rope-breaking process may become more difficult, or even the task may not be completed successfully.

[0007] 4) Unstable quality of broken rope: The force and frequency of manual hammering are difficult to maintain consistently, which may result in an uneven cut surface of the wire rope, affecting subsequent use or handling. For example, in some situations where wire ropes need to be connected or fixed, an uneven cut surface may lead to an unstable connection, posing a safety hazard.

[0008] In summary, traditional wire rope cutting methods have multiple limitations: when a sledgehammer strikes the rope cutter, it easily generates flying iron slag that threatens the safety of operators, and there is a risk of hand injuries due to hammering deviations during two-person operations; when dealing with thicker wire ropes, multiple people are required to repeatedly hammer, which is time-consuming and laborious, making it difficult to meet emergency operation needs; and it places strict requirements on the operator's skills; in addition, it is difficult to maintain a stable force when hammering manually, often resulting in an uneven cut surface, affecting the reliability of subsequent connections and creating potential safety hazards. Summary of the Invention

[0009] To address a series of problems associated with manual rope breaking, such as operational safety risks, low work efficiency, excessively high skill requirements, and unstable rope breaking quality, this utility model provides a coal mine wire rope breaking device.

[0010] This utility model is achieved using the following technical solution:

[0011] A wire rope cutter for coal mines includes a lower fixing groove fixed to a base, an upper fixing groove hinged to the rear side of the lower fixing groove, and a locking device on the front side of the upper fixing groove. A knife cylinder is vertically fixed to the middle of the outer side of the upper fixing groove, and a rope-cutting knife is movably inserted into the knife cylinder, passing through the upper fixing groove. The handle of the rope-cutting knife passes through the upper fixing groove, and the end of the handle on the outer side of the upper fixing groove is provided with a stopper, while the end of the handle on the inner side of the upper fixing groove is provided with a wedge-shaped or blade-shaped cutting head. When the upper fixing groove is in the locked position, the cutting head faces the lower fixing groove. Rope pressers are installed on both sides of the rope-cutting knife in the upper fixing groove. When the upper fixing groove is in the locked position, each of the two rope pressers has an upwardly protruding rope-bearing groove on the bottom wall of the lower fixing groove.

[0012] In implementation, it includes a lower fixing groove fixed on the base, with openings at both ends. Two U-shaped frames are fixed on the base, arranged opposite each other, with the lower fixing groove fixedly supported inside the U-shaped frames. A matching upper fixing groove is hinged to the rear edge of the lower fixing groove to accommodate the wire rope, protect the operator, and prevent slag from splashing. A locking device is provided on the front side of the upper fixing groove. The locking device can be adjusted in tightness. The locking device includes a locking rod shaft fixed on the side wall of the U-shaped frame, with a locking rod rotatably mounted on the locking rod shaft. The free end of the locking rod has an external thread and an adjusting nut screwed on it. The tightness of the upper fixing groove can be adjusted by adjusting the position of the adjusting nut on the locking rod. The adjusting nut is locked on a locking protrusion fixed on the outside of the upper fixing groove, and the lower edge of the adjusting nut is locked on the upper edge of the locking protrusion.

[0013] A cutter cylinder is vertically fixed to the outer middle of the upper fixed groove. A rope-cutting knife is movably inserted into the cutter cylinder and passes through the upper fixed groove. The rope-cutting knife moves up and down along the axial direction of the cutter cylinder to cut the wire rope. The handle of the rope-cutting knife passes through the upper fixed groove, and the end of the handle located on the outer side of the upper fixed groove is provided with a hammer. The hammer is used to strike the cutter head onto the wire rope. The end of the handle located on the inner side of the upper fixed groove is provided with a wedge-shaped or blade-shaped cutter head, which is set perpendicular to the wire rope. A limit ring is fixedly sleeved in the middle of the handle, and a return spring is sleeved on the outer circumference of the handle. The two ends of the return spring press against the limit ring and the upper fixed groove respectively. A limit groove is opened in the middle and lower part of the cutter cylinder along the axial direction. A limit rod with its end vertically installed on both sides of the handle passes through the limit groove. The limit rod is installed above the limit ring.

[0014] When the upper fixed groove is in the engaged position, the cutter head faces the lower fixed groove. Rope clamping devices are installed on both sides of the upper fixed groove. The rope clamping device includes a rope clamping screw that passes through the upper fixed groove. The upper part of the rope clamping screw has an external thread and is screwed into the threaded mounting hole of the upper fixed groove through thread engagement. A rope clamping rotary rod is connected to the end of the rope clamping screw located outside the upper fixed groove for manual rotation operation. A half-nut clamping block is connected to the end of the rope clamping screw located inside the upper fixed groove. An arc-shaped clamping groove is machined on the lower end face of the half-nut clamping block. The radius of the arc-shaped clamping groove is larger than the outer diameter of the wire rope and is used to accommodate and position the wire rope.

[0015] When the upper fixing groove is in the snap-fit ​​position, the bottom wall of the lower fixing groove has an upward-protruding rope-bearing groove opposite the two rope pressers.

[0016] When using the device, place it stably, rotate the free end of the locking rod to disengage the adjusting nut from the outer edge of the upper fixing groove, and release the locking device. Using the hinge point with the rear edge of the lower fixing groove as the axis, flip the upper fixing groove upwards and backwards. Place the wire rope to be cut in the lower fixing groove, with the predetermined cutting position of the wire rope in the center, roughly corresponding to the direct below of the subsequent cutter head and the middle of the two rope-receiving grooves. Ensure that the wire rope is located inside the two upward-protruding rope-receiving grooves on the bottom wall of the lower fixing groove, initially positioning the wire rope and preventing it from moving.

[0017] Hold and rotate the rope-pressing screw located outside the upper fixed groove; drive the rope-pressing screw downwards, i.e., towards the wire rope; the downward movement of the rope-pressing screw causes the half-nut pressure block located at the inner end of the upper fixed groove to move downwards, and the arc-shaped pressure groove at the lower end of the half-nut pressure block contacts and presses the wire rope below; because the radius of the arc-shaped pressure groove is larger than the outer diameter of the wire rope, it can better fit and press the wire rope, while avoiding damage to the rope body. Perform this operation on both sides of the predetermined cutting position of the wire rope (i.e., at the two rope pressers), and firmly press the wire rope into the rope-receiving groove of the lower fixed groove.

[0018] Rotate the upper fixing groove downwards and forwards to engage with the lower fixing groove, forming a closed or semi-closed cavity that encloses the wire rope. The cavity is used to accommodate the wire rope and subsequent cutting operations, prevent slag from splashing, and protect the operator. Rotate the free end of the locking rod, i.e. the end with the adjusting nut, downwards so that the lower edge of the adjusting nut is engaged with the upper edge of the locking protrusion on the outside of the upper fixing groove.

[0019] Adjust the adjusting nut on the free end of the rotating locking rod to adjust the clamping force of the upper fixing groove on the lower fixing groove and the internal wire rope. Adjust the tightness according to the diameter of the wire rope and the required tightness to ensure that the upper fixing groove is securely engaged.

[0020] After confirming that the upper fixing groove is engaged and locked, and that the wire rope is compressed by the rope clamp on both sides of the cutting point, the operator uses a hammer or other tools to strike the pier head. The rope clamping knife moves downward, and the hammering force drives the rope breaking knife to overcome the elasticity of the return spring, causing the return spring to compress. The rope breaking knife moves downward at high speed along the axial direction (vertical direction) of the knife cylinder, and the blade head forcefully strikes the wire rope downward, forcibly cutting it. The closed groove structure effectively prevents the splashing of iron slag during cutting. The limit rod moves downward along the limit groove to prevent the blade head from rotating. After hammering, the hammer is removed, and the return spring pushes the limit ring and the entire rope breaking knife upward, causing the rope clamping knife to spring up and retract upward along the knife cylinder, lifting it away from the wire rope. The limit rod is blocked when it rises to the top of the limit groove, preventing the rope breaking knife from being completely ejected from the knife cylinder by the spring, ensuring that the blade head is safely retracted into the upper fixing groove. Hammering is repeated until the wire rope breaks.

[0021] Lift or rotate the free end of the locking rod to disengage the adjusting nut from the outer side of the upper fixing groove, loosen the locking device, open the upper fixing groove, remove the steel wire rope that has been cut into two sections from the lower fixing groove, and clean any iron filings or debris that may remain in the groove.

[0022] Compared with the prior art, this application has the following advantages:

[0023] This utility model provides a wire rope breaker for coal mines. The upper and lower fixing grooves interlock to form a sealed striking space, effectively preventing metal slag from flying and injuring people during the rope breaking process. Simultaneously, a rope clamping device is used to fix the wire rope, replacing manual rope holding, completely eliminating the risk of injury to the operator's hands and significantly improving operational safety. This equipment can be operated by a single person, requiring no multiple people, thus reducing labor costs and simplifying the operation process.

[0024] This invention maintains the blade perpendicular to the wire rope throughout the cutting process, resulting in a smoother cutting process. It allows for a more concentrated and efficient transmission of the hammer's striking force, significantly reducing the number of repeated strikes and thus noticeably improving rope-cutting efficiency. Furthermore, this vertical cutting method, combined with the blade, produces a smoother cut surface, facilitating subsequent connection and securing operations, effectively improving connection strength, and further reducing safety hazards. Attached Figure Description

[0025] Figure 1 This is a schematic diagram showing the structure of the present invention.

[0026] Figure 2 This diagram illustrates the installation of the rope-breaking knife according to this utility model.

[0027] Figure 3 This is a side view of the rope-breaking knife of this utility model.

[0028] Figure 4 This is a schematic diagram of the rope clamping device of this utility model.

[0029] Figure 5 This is a schematic diagram of the locking device in this utility model.

[0030] In the picture:

[0031] 1. Upper fixing groove; 101. Threaded mounting hole;

[0032] 2. Lower fixing groove;

[0033] 3. Locking device; 301. Locking shaft; 302. Locking rod; 303. Adjusting nut; 304. Locking protrusion;

[0034] 4. Rope-breaking knife; 401. Cutting head; 402. Knife handle; 403. Limiting rod; 404. Limiting ring; 405. Return spring; 406. Knife head;

[0035] 5. Cutter barrel; 501. Limiting groove;

[0036] 6. Rope presser; 601. Rope presser rod; 602. Rope presser screw; 603. Half nut presser block; 604. Arc-shaped presser groove;

[0037] 7. U-shaped frame;

[0038] 8. Base;

[0039] 9. Steel wire rope. Detailed Implementation

[0040] The present invention will now be described in conjunction with specific embodiments.

[0041] A type of wire rope breaker for coal mines, such as Figures 1-5 As shown: A lower fixing groove 2 is fixed to a base 8, with openings at both ends. Two U-shaped frames 7 are fixed to the base 8, arranged opposite each other, with the lower fixing groove 2 fixedly supported within each frame. An upper fixing groove 1 is hinged to the rear edge of the lower fixing groove 2 to accommodate the wire rope 9, protecting the operator and preventing slag from splashing. A locking device 3 is provided on the front side of the upper fixing groove 1. The locking tightness of the locking device 3 is adjustable. The locking device 3 includes a locking rod 302 shaft fixed to the side wall of the U-shaped frame 7. A locking rod 302 is rotatably mounted on the locking rod 302 shaft. The free end of the locking rod 302 has an external thread and an adjusting nut 303 is screwed on it. The tightness of the upper fixing groove 1 can be adjusted by adjusting the position of the adjusting nut 303 on the locking rod 302. The adjusting nut 303 is engaged with a locking protrusion 304 fixed to the outside of the upper fixing groove 1, with the lower edge of the adjusting nut 303 engaged with the upper edge of the locking protrusion 304.

[0042] A cutter cylinder 5 is vertically fixed to the outer middle of the upper fixed groove 1. A rope-cutting knife 4, which passes through the upper fixed groove 1, is movably inserted into the cutter cylinder 5. The rope-cutting knife 4 moves up and down along the axial direction of the cutter cylinder 5 to cut the wire rope 9. The handle 402 of the rope-cutting knife 4 passes through the upper fixed groove 1, and the end of the handle 402 located on the outer side of the upper fixed groove 1 is provided with a hammer head 401. The hammer head 401 is used to strike the cutter head 406 onto the wire rope 9. The end of the handle 402 located on the inner side of the upper fixed groove 1 is provided with a wedge-shaped or... The blade-shaped cutting head 406 is set vertically to the steel wire rope 9. The middle part of the handle 402 is fixedly fitted with a limiting ring 404. The outer circumference of the handle 402 is fitted with a return spring 405. The two ends of the return spring 405 press against the limiting ring 404 and the upper fixing groove 1 respectively. The lower middle part of the cutter barrel 5 has a limiting groove 501 opened along the axial direction. The limiting groove 501 has a limiting rod 403 with its end vertically installed on both sides of the handle 402. The limiting rod 403 is installed above the limiting ring 404.

[0043] When the upper fixed groove 1 is in the snap-fit ​​position, the cutter head 406 is directly opposite the lower fixed groove 2; the upper fixed groove 1 is equipped with rope pressers 6 on both sides of the rope breaking cutter 4; the rope presser 6 includes a rope pressing screw 602 passing through the upper fixed groove 1, the upper part of the rope pressing screw 602 is provided with external thread, and is screwed into the threaded mounting hole 101 of the upper fixed groove 1 by thread engagement; the end of the rope pressing screw 602 located outside the upper fixed groove 1 is connected to a rope pressing rotary rod 601 for manual rotation operation, and the end of the rope pressing screw 602 located inside the upper fixed groove 1 is connected to a half nut pressure block 603, the lower end face of the half nut pressure block 603 is machined with an arc-shaped pressure groove 604, the radius of the arc-shaped pressure groove 604 is larger than the outer diameter of the wire rope 9, and is used to accommodate and position the wire rope 9.

[0044] When the upper fixing groove 1 is in the snap-fit ​​position, the bottom wall of the lower fixing groove 2 has an upwardly protruding rope-bearing groove at each of the two rope pressers 6.

[0045] When in use, place the device stably, rotate the free end of the locking rod 302 to disengage the adjusting nut 303 from the outer side of the upper fixing groove 1 and release the locking device 3. Using the hinge point with the rear side groove edge of the lower fixing groove 2 as the axis, flip the upper fixing groove 1 upward and backward. Place the wire rope 9 to be cut in the lower fixing groove 2. The predetermined cutting position of the wire rope 9 is placed in the center, roughly corresponding to the bottom of the subsequent cutter head 406 and the middle of the two rope-bearing grooves. Ensure that the wire rope 9 is located inside the two upward-protruding rope-bearing grooves on the inner bottom wall of the lower fixing groove 2. Initially position the wire rope 9 to prevent it from moving.

[0046] Hold and rotate the rope-pressing screw 602 located on the outside of the upper fixed groove 1; drive the rope-pressing screw 602 downward, i.e., towards the wire rope 9; the downward movement of the rope-pressing screw 602 causes the half-nut pressure block 603 located at its inner end of the upper fixed groove 1 to move downward, and the arc-shaped pressure groove 604 at the lower end of the half-nut pressure block 603 contacts and presses the wire rope 9 below; since the radius of the arc-shaped pressure groove 604 is larger than the outer diameter of the wire rope 9, it can fit and press the wire rope 9 better, while avoiding damage to the rope. Perform this operation on both sides of the predetermined cutting position of the wire rope 9 (i.e., at the two rope pressers 6) to firmly press the wire rope 9 into the rope-receiving groove of the lower fixed groove 2.

[0047] Rotate the upper fixing groove 1 downwards and forwards to engage with the lower fixing groove 2, forming a closed or semi-closed cavity that encloses the wire rope 9. The cavity is used to accommodate the wire rope 9 and subsequent cutting operations, prevent slag from splashing, and protect the operator. Rotate the free end of the locking rod 302, i.e. the end with the adjusting nut 303, downwards so that the lower edge of the adjusting nut 303 is engaged with the upper edge of the locking protrusion 304 on the outside of the upper fixing groove 1.

[0048] Adjust the adjusting nut 303 on the free end of the rotating locking rod 302 to adjust the clamping force of the upper fixing groove 1 on the lower fixing groove 2 and the internal steel wire rope 9. Adjust the tightness to a suitable level according to the diameter of the steel wire rope 9 and the required tightness to ensure that the upper fixing groove 1 is securely fastened.

[0049] After confirming that the upper fixing groove 1 is engaged and locked, and that the wire rope 9 is compressed by the rope presser 6 on both sides of the cutting point, the operator uses a hammer or other tools to strike the pier head 401. The rope presser moves downward, and the hammering force drives the rope cutter 4 to overcome the elastic force of the return spring 405, compressing the return spring 405. The rope cutter 4 moves downward at high speed along the axial direction (vertical direction) of the cutter cylinder 5, and the cutter head 406 forcefully strikes the wire rope 9 downward, forcibly cutting it. The closed groove structure effectively prevents the splashing of iron slag during cutting. The limiting rod 403 moves downward along the limiting groove 501 to prevent the cutter head 406 from rotating. After the hammering is completed, the hammer is removed, and the return spring 405 pushes the limiting ring 404 and the entire rope-breaking knife 4 upward, causing the rope-pressing knife to spring up and retract upward along the knife cylinder 5, lifting it away from the wire rope 9. When the limiting rod 403 rises to the top of the limiting groove 501, it is blocked to prevent the rope-breaking knife 4 from being completely ejected from the knife cylinder 5 by the spring, ensuring that the cutter head 406 is safely retracted into the upper fixed groove 1. The hammering is repeated until the wire rope 9 breaks.

[0050] Lift or rotate the free end of the locking rod 302 to disengage the adjusting nut 303 from the latch 304 on the outside of the upper fixing groove 1, loosen the locking device 3, open the upper fixing groove 1, remove the steel wire rope 9 that has been cut into two sections in the lower fixing groove 2, and clean any iron filings or debris that may remain in the groove.

[0051] The scope of protection claimed by this utility model is not limited to the specific embodiments described above. Moreover, for those skilled in the art, this utility model can have various modifications and alterations. Any modifications, improvements, and equivalent substitutions made within the concept and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wire rope breaker for coal mines, characterized in that: It includes a lower fixing groove (2) fixed on the base (8), and an upper fixing groove (1) is hinged to the rear side groove edge of the lower fixing groove (2). A locking device (3) is provided on the front side of the upper fixing groove (1). A knife cylinder (5) is vertically fixed to the middle of the outer side of the upper fixing groove (1). A rope-breaking knife (4) is movably inserted into the knife cylinder (5) and passes through the upper fixing groove (1). The handle (402) of the rope-breaking knife (4) passes through the upper fixing groove (1), and the end of the handle (402) located outside the upper fixing groove (1) is provided with a head (401). The end of the handle (402) located inside the upper fixing groove (1) is provided with a wedge-shaped or blade-shaped blade (406). When the upper fixing groove (1) is in the locking position, the blade (406) faces the lower fixing groove (2). Rope pressers (6) are installed on both sides of the upper fixing groove (1) and the rope-breaking knife (4). When the upper fixing groove (1) is in the fastening position, the bottom wall of the lower fixing groove (2) is provided with an upwardly protruding rope-bearing groove at the position opposite the two rope pressers (6).

2. The wire rope breaker for coal mines according to claim 1, characterized in that: Two U-shaped frames (7) are fixed on the base (8). The two U-shaped frames (7) are arranged opposite each other and the lower fixing groove (2) is fixedly supported inside the U-shaped frame (7).

3. The wire rope breaker for coal mines according to claim 2, characterized in that: The locking device (3) includes a locking rod (302) shaft fixed on the side wall of the U-shaped frame (7). The locking rod (302) is rotatably mounted on the locking rod (302) shaft. The free end of the locking rod (302) is provided with an external thread and is screwed with an adjusting nut (303). The adjusting nut (303) is locked on the locking protrusion (304) fixed on the outside of the upper fixing groove (1).

4. The wire rope breaker for coal mines according to claim 1, characterized in that: The rope presser (6) includes a rope pressing screw (602) that passes through the upper fixed groove (1). The upper part of the rope pressing screw (602) is provided with an external thread and is screwed into the threaded mounting hole (101) of the upper fixed groove (1) by thread engagement. The end of the rope pressing screw (602) located outside the upper fixed groove (1) is connected to a rope pressing swivel (601), and the end of the rope pressing screw (602) located inside the upper fixed groove (1) is connected to a half nut pressing block (603). The lower end face of the half nut pressing block (603) is machined with an arc-shaped pressing groove (604).

5. A wire rope breaker for coal mines according to claim 4, characterized in that: The radius of the arc-shaped pressure groove (604) is greater than the outer diameter of the wire rope (9).

6. A wire rope breaker for coal mines according to claim 1, characterized in that: The tool holder (402) has a fixed sleeve with a limiting ring (404) in the middle, and a return spring (405) is sleeved on the outer periphery of the tool holder (402). The two ends of the return spring (405) are respectively pressed between the limiting ring (404) and the upper fixing groove (1).

7. A wire rope breaker for coal mines according to claim 6, characterized in that: The lower middle part of the cutter barrel (5) has a limiting groove (501) along the axial direction. A limiting rod (403) with its end vertically installed on both sides of the cutter handle (402) passes through the limiting groove (501). The limiting rod (403) is installed above the limiting ring (404).

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