Wire rope unwinding machine

Abstract

The present invention relates to the field of elevator wire rope unwinding equipment, specifically a wire rope unwinding machine, which is particularly suitable for wire rope bundling access for special equipment such as elevators. It includes a frame, a roller, a brake wheel, a brake block, a rocker arm, and a brake rod. A reversing wheel is installed on the frame below the rocker arm, a first guide wheel is rotatably installed on the frame above the rocker arm, a second guide wheel is rotatably installed on the frame above the tensioning wheel, a strut is hinged on the frame between the first guide wheel and the second guide wheel, a limit spring is provided on the strut arm, and a guide ring is provided on the strut arm below the limit spring, and the guide ring is connected to the end of the rocker arm near the tensioning wheel. The overall structure of the present invention is simple, and it is directly connected to the wire rope winding and bundling equipment. The performance matching is highly consistent, complete and unified, and there is no need to add full-time operators; it fundamentally solves the problem of uniform feeding of wire rope winding and bundling equipment. The labor intensity of operators is greatly reduced.

Description

Technical Field

[0001] The invention relates to the field of elevator wire rope unwinding equipment, in particular to a wire rope unwinding machine, which is particularly suitable for wire rope bundling and access of special equipment such as elevators. Background Art

[0002] At present, there are two sources of steel wire ropes required for elevators to leave the factory: the first is that the steel wire rope manufacturer prepares and ships it according to the different specifications of the elevator factory. This method is simple but costly and uses certain packaging materials, resulting in a waste of resources. The quality and quantity cannot be tested before the elevator is installed, and the cycle is long. The second is that the elevator factory cuts the length of the winding steel wire rope according to the design needs. It no longer needs to be packaged separately, and the production and delivery cycles are easy to arrange. Elevator factories have wire rope winding and bundling equipment, but the wire rope delivery equipment is different and in various forms. In order to obtain neatly wound, accurate and efficient steel wire ropes, there must be a device that continuously feeds the steel wire rope at a uniform speed, without twisting, and uninterruptedly before the wire rope winding and bundling equipment. Summary of the invention

[0003] The invention aims to provide a steel wire rope unwinding machine with continuous uniform speed, no twist and no interruption.

[0004] The present invention is realized by the following technical scheme: a wire rope unwinding machine comprises a frame, a roller rotatably arranged on the frame, a brake wheel fixedly arranged on the roller and coaxially connected with the roller, a brake block rotatably arranged on the frame and pressed and braked with the outer edge of the brake wheel, a swing rod located on the other side of the frame opposite to the roller, and an L-shaped brake rod.

[0005] One end of the swing rod is hinged to the upper part of the frame, and the other end of the swing rod is rotatably installed with a tension wheel, the end of the swing rod hinged to the upper part of the frame is extended outwardly to be provided with a connecting ear, a guide rod extending downward is hinged on the connecting ear, a brake return spring is looped on the guide rod, a stop card cooperating with the brake return spring stop is provided at the lower end of the guide rod, the turning part of the brake rod is rotatably arranged on the frame, the brake block is hinged to the short rod end of the brake rod, and the long rod of the brake rod is slidably sleeved on the guide rod located at the upper end of the brake return spring, the hinge point of the brake rod and the frame is lower than the axis center height of the roller, and the hinge point of the brake block and the brake rod is higher than the axis center height of the roller;

[0006] A reversing wheel is installed on the frame below the rocker arm, a first guide wheel is rotatably installed on the frame above the rocker arm, a second guide wheel is rotatably installed on the frame above the tensioning wheel, a support rod is hinged on the frame between the first guide wheel and the second guide wheel, a limit spring is provided on the support rod, a guide ring is provided on the support rod below the limit spring, and the guide ring is connected to the end of the rocker arm close to the tensioning wheel.

[0007] As a further improvement of the technical solution of the present invention, a clamping seat is respectively provided on the frames at both ends of the roller, and the two ends of the roller are rotatably arranged on the clamping seat through bearings.

[0008] As a further improvement of the technical solution of the present invention, a limit ring is fixedly provided on the roller located at one end of the wire rope original wheel, a clamping arm is extended from the limit ring, the clamping arm is provided with a plug-in portion which is inserted and matched with the side plate of the wire rope original wheel, and a stop ring is looped on the roller located at the other end of the wire rope original wheel, and a pin body which is inserted and matched with the roller is passed through the stop ring.

[0009] As a further improvement of the technical solution of the present invention, a motor is installed on the upper part of the frame, a driving wheel is coaxially installed on the output end of the motor, and a rotating shaft is provided on the upper part of the frame for rotation support, a driven wheel is fixedly provided at one end of the rotating shaft, the driving wheel and the driven wheel are connected by a belt, and a worm gear part is provided on the upper part of the frame corresponding to the card seat for rotation in the horizontal direction, and a worm part is provided on the rotating shaft opposite to the worm gear part, the core shaft of each worm gear part is passed through the frame and extends downward to form a lead screw, and each lead screw is rotationally matched with a card seat nut extending out of the frame.

[0010] As a further improvement of the technical solution of the present invention, a door-shaped limit rod is provided on the frame located on the rope feeding side of the reversing wheel. The limit rod is located in the middle of the reversing wheel and the lateral width of the inner edge of the limit rod is smaller than the axial width of the reversing wheel.

[0011] As a further improvement of the technical solution of the present invention, a limit window is opened on the rocker arm below the first guide wheel in the up and down directions, and the wire rope after being reversed by the reversing wheel passes through the limit window and is transmitted to the first guide wheel.

[0012] As a further improvement of the technical solution of the present invention, an eccentric wheel is rotatably provided on the frame close to the guide rod, and the rotating mounting point between the eccentric wheel and the frame deviates from the center of the eccentric wheel. The outer edge of the other end of the eccentric wheel is fixedly sleeved on the inner ring of the pressing bearing, and the end face of the other end of the eccentric wheel extends a handle from the center of the inner ring of the pressing bearing. The handle can control the pressing bearing and the long rod end of the brake rod to press and fit when the eccentric wheel rotates downward in an area with a larger eccentric distance.

[0013] As a further improvement of the technical solution of the present invention, there are at least two annular grooves on the tensioner wheel, and the number of annular grooves on the second guide wheel is greater than that on the tensioner wheel.

[0014] As a further improvement of the technical solution of the present invention, the upper surface of the holder is an arc-shaped concave structure, and a slot allowing the bearing to be clamped is opened on the holder, the axial ends of the bearing are limited in the slot, and the roller does not interfere with the holder.

[0015] As a further improvement of the technical solution of the present invention, a brake pad which is frictionally matched with the brake wheel is detachably mounted on the brake block and the outer edge of the brake wheel.

[0016] The wire rope unwinding machine of the present invention has a practical overall design, a simple structure, a reasonable and compact layout, is directly connected to the wire rope winding and baling equipment, and has a highly consistent and complete performance match, without the need to add full-time operators; during baling operations, no additional personnel are needed, and the equipment automatically adjusts according to the different operating speeds of the wire rope winding and baling equipment, which is extremely convenient and completely overcomes the shortcomings of malfunctions or accidents caused by laziness or fluke factors. It fundamentally solves the problem of uniform feeding of wire rope winding and baling equipment. It is simple, safe, and easy to operate; it occupies a small area, is easy to use, improves work efficiency, reduces costs, and greatly reduces the labor intensity of operators. It can also protect the wire rope from damage during the baling process, eliminating or reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view of the wire rope unwinding machine described in the present invention.

[0019] Figure 2 for Figure 1 Left view of .

[0020] Figure 3 for Figure 1 Right view of .

[0021] Figure 4 for Figure 1 Rear view of.

[0022] Figure 5 for Figure 1 Top view of the .

[0023] Figure 6 This is a schematic diagram of the cooperation between the pressed bearing and the brake rod.

[0024] In the figure: 1-frame, 2-roller, 3-brake wheel, 4-brake block, 5-rocker, 6-tension wheel, 7-connecting ear, 8-guide rod, 9-brake return spring, 10-stop card, 11-brake rod, 12-reversing wheel, 13-first guide wheel, 14-second guide wheel, 15-support rod, 16-limit spring, 17-guide ring, 18-card seat, 19-bearing, 20-wire rope original wheel, 21-limit Ring, 22-arm, 23-connecting part, 24-stop ring, 25-pin body, 26-motor, 27-driving wheel, 28-rotating shaft, 29-driven wheel, 30-belt, 31-worm wheel part, 32-worm part, 33-limiting rod, 34-limiting window, 35-wire rope, 36-eccentric wheel, 37-pressed bearing, 38-handle, 39-brake pad, 40-gear lever, 41-clamping ring, 42-long hole. DETAILED DESCRIPTION

[0025] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. 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 implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] The wire rope unwinding machine includes a frame 1, a roller 2 rotatably mounted on the frame 1, a brake wheel 3 fixedly mounted on the roller 2 and coaxially connected to the roller 2, a brake block 4 rotatably mounted on the frame 1 and pressed against the outer edge of the brake wheel 3 for braking, a swing rod 5 located on the other side of the frame 1 opposite to the roller 2, and an L-shaped brake rod 11.

[0027] One end of the swing rod 5 is hinged to the upper part of the frame 1, and the other end of the swing rod 5 is rotatably mounted with a tension wheel 6. The end of the swing rod 5 hinged to the upper part of the frame 1 is extended outwardly with a connecting ear 7, and a guide rod 8 extending downward is hinged on the connecting ear 7. A brake reset spring 9 is looped on the guide rod 8, and a stop card 10 cooperating with the brake reset spring 9 is provided at the lower end of the guide rod 8. The turning part of the brake rod 11 is rotatably arranged on the frame 1, the brake block 4 is hinged to the short rod end of the brake rod 11, and the long rod of the brake rod 11 is slidably sleeved on the guide rod 8 located at the upper end of the brake reset spring 9. The hinge point of the brake rod 11 and the frame 1 is lower than the axis center height of the roller 2, and the hinge point of the brake block 4 and the brake rod 11 is higher than the axis center height of the roller 2;

[0028] A reversing wheel 12 is installed on the frame 1 below the rocker arm 5, a first guide wheel 13 is rotatably installed on the frame 1 above the rocker arm 5, a second guide wheel 14 is rotatably installed on the frame 1 above the tensioning wheel 6, a strut 15 is hinged on the frame 1 between the first guide wheel 13 and the second guide wheel 14, a limit spring 16 is looped on the strut 15, a guide ring 17 is looped on the strut 15 below the limit spring 16, and the guide ring 17 is connected to the end of the rocker arm 5 near the tensioning wheel 6.

[0029] like Figure 1 , 2 As shown in Figure 3, the wire rope original wheel 20 is sleeved on the roller 2, and then the side plate of the wire rope original wheel 20 is fixed together with the roller 2 in a conventional manner in the art, and the wire rope 35 on the wire rope original wheel 20 is pulled out from the wire rope original wheel 20, and the wire rope 35 enters the lower part of the reversing wheel 12 and then passes through the first guide wheel 13 to reach the second guide wheel 14, and then is transmitted from the second guide wheel 14 to the tensioning wheel 6 and then rewound to the second guide wheel 14 (at this time, there are at least two annular grooves on the second guide wheel 14 to facilitate the winding of the wire rope 35), and then connected to the wire rope winding and bundling equipment. Turn on the wire rope winding and bundling equipment, and the wire rope winding and bundling equipment starts to pull the wire rope 35 at a continuous and uniform speed, so as to Figure 1 Taking the direction shown as an example, since the initial angular velocity of the wire rope original wheel 20 is relatively small, the swing rod 5 swings upward in the clockwise direction, the guide ring 17 continuously presses the limit spring 16 on the support rod 15 upward, the center distance between the tension wheel 6 and the second guide wheel 14 becomes smaller, and the angular velocity of the wire rope original wheel 20 on the roller 2 gradually increases; when the angular velocity of the wire rope original wheel 20 increases, the wire rope 35 on the wire rope original wheel 20 is pulled out faster than the pulling speed of the wire rope winding and bundling equipment, and the wire rope 35 wound between the tension wheel 6 and the second guide wheel 14 is relatively large. The tension wheel 6 and the second guide wheel 14 are loose, and the force exerted by the wire rope 35 on the tension wheel 6 and the second guide wheel 14 is small. Then, under the action of the elastic force of the limit spring 16, the center distance between the tension wheel 6 and the second guide wheel 14 is gradually increased, and the swing rod 5 swings downward in the counterclockwise direction, thereby driving the connecting ear 7 on the upper right side thereof to move upward, and the guide rod 8 also moves upward. Under the limiting action of the stop card 10, the lower part of the brake return spring 9 is compressed, and under the elastic force of the brake return spring 9, the long rod end of the brake rod 11 moves upward along the hinge point between it and the frame 1 (that is, Figure 3The brake shoe 4 hinged to the short rod end of the brake rod 11 is pushed to the right and pressed against the outer edge of the brake wheel 3 for braking, so that the angular velocity of the brake wheel 3 becomes smaller, and then the angular velocity of the wire rope original wheel 20 fixed to the roller 2 becomes smaller; when the angular velocity of the wire rope original wheel 20 becomes smaller, the wire rope 35 on the wire rope original wheel 20 is less than the pulling speed of the wire rope winding and bundling equipment, the wire rope 35 wound between the tensioning wheel 6 and the second guide wheel 14 is tight, the tensioning wheel 6 and the second guide wheel 14 are subjected to a greater force of the wire rope 35, and the center distance between the tensioning wheel 6 and the second guide wheel 14 is controlled to gradually decrease again, and the swing rod 5 swings upward in the clockwise direction, thereby driving the upper right connecting ear 7 to move downward, and the guide rod 8 to move downward, so that the brake reset spring 9 is stretched, and the long rod end of the brake rod 11 moves downward along the hinge point between it and the frame 1 (that is, Figure 3 As shown in the counterclockwise direction), the brake rod 11 returns to its initial position, the brake block 4 separates from the outer edge of the brake wheel 3, and the angular velocity of the wire rope original wheel 20 increases again, and the process repeats until the wire rope original wheel 20 is completely pulled out.

[0030] In this embodiment, the reciprocating swing of the swing arm 5 controls the braking between the brake block 4 and the brake wheel 3, so that the rotation speed of the wire rope original wheel 20 can adapt to the pulling speed of the wire rope winding and bundling equipment, and the wire rope original wheel 20 can continuously feed the wire rope 35 to the wire rope winding and bundling equipment at a uniform speed, without twisting and without interruption, so as to avoid the phenomenon that the wire rope 35 drawn from the wire rope original wheel 20 is entangled with each other and wears during the rope feeding process. The limit spring 16 in this embodiment can promote the tension wheel 6 with a smaller center distance with the second guide wheel 14 to run downward, and in this embodiment, when the swing arm 5 is reciprocating, the corresponding strut 15 also reciprocates. In this embodiment, the inner diameter of the guide ring 17 is larger than the diameter of the strut 15 and smaller than the outer diameter of the limit spring 16. Specifically, the guide ring 17 can be fixed on the swing arm 5, or can be rotatably arranged on the swing arm 5. Preferably, the guide ring 17 is rotatably mounted on the swing rod 5, and the specific straight line where the rotational mounting axis of the guide ring 17 is located is in the same direction as the radial direction of the guide ring 17. When the guide ring 17 is rotatably mounted on the swing rod 5, when the swing rod 5 is reciprocating, the guide ring 17 can adapt to the operation of the strut 15 according to the swing of the strut 15.

[0031] In this embodiment, in order to prevent the tensioning wheel 6 from rubbing against the ground when the wire rope unwinding machine is in an idle state or a transport state, a shift lever 40 that cooperates with the support of the rocker arm 5 is preferably installed on the frame 1 below the reciprocating motion trajectory of the rocker arm 5. The shift lever 40 does not affect the normal use of the rocker arm 5.

[0032] This embodiment further provides a method for installing the roller 2 , that is, a holder 18 is respectively provided on the frame 1 at both ends of the roller 2 , and both ends of the roller 2 are rotatably mounted on the holder 18 via bearings 19 .

[0033] Furthermore, the present embodiment provides a fixing method between the original wheel 20 of the wire rope and the roller 2: a limit ring 21 is fixedly provided on the roller 2 at one end of the original wheel 20 of the wire rope, a clamp arm 22 is extended on the limit ring 21, and a plug-in portion 23 for inserting and matching with the side plate of the original wheel 20 of the wire rope is provided on the clamp arm 22, and a stop ring 24 is looped on the roller 2 at the other end of the original wheel 20 of the wire rope, and a pin body 25 for inserting and matching with the roller 2 is penetrated on the stop ring 24. In the present embodiment, the plug-in portion 23 can be a component such as a pin or a bolt, and the specific insertion position with the side plate of the original wheel 20 of the wire rope can select the original installation hole on the side plate of the original wheel 20 of the wire rope, or a plug-in hole can be drilled at a place corresponding to the plug-in portion 23 on site. Furthermore, since the original mounting hole position on the wire rope original wheel 20 may be different, it is preferred to open a sliding hole in the extension direction of the clamp arm 22, and adjust the position of the bolt and nut assembly through the sliding hole to make it compatible with the original mounting hole on the wire rope original wheel 20. In the present embodiment, the pin body 25 can be a bolt that fits with the threaded penetration of the roller 2. Of course, a penetration groove or a penetration hole is provided on the roller 2 corresponding to the pin body 25. The penetration groove does not penetrate the roller 2, and an internal thread can be provided in the penetration groove, and the bolt of the pin body 25 is threadedly matched with the internal thread. The penetration hole has penetrated the roller 2 in the radial direction, and the corresponding stop ring 24 has a corresponding hole on the radial ring body. The bolt of the pin body 25 passes through the penetration hole and the corresponding hole of the stop ring 25 and is fastened by a nut.

[0034] In this embodiment, in order to facilitate the threading of the wire rope original wheel 20 onto the roller 2, the following structure is specially designed: a motor 26 is installed on the upper part of the frame 1, a driving wheel 27 is coaxially installed on the output end of the motor 26, and a rotating shaft 28 is provided on the upper part of the frame 1 for rotation support, a driven wheel 29 is fixedly provided at one end of the rotating shaft 28, and the driving wheel 27 and the driven wheel 29 are connected by a belt 30, and a worm gear part 31 is provided on the upper part of the frame 1 corresponding to the holder 18 for rotation in the horizontal direction, and a worm part 32 is provided on the rotating shaft 28 opposite to the worm gear part 31, and the core shaft of each worm gear part 31 is passed through the frame 1 and extends downward to form a screw, and each screw is rotatably matched with the nut of the holder 18 extending out of the frame 1. Initially, the height of the holder 18 is lower than the height of the axis of the wire rope original wheel 20. After the roller 2 is inserted and fixedly connected to the wire rope original wheel 20, the wire rope original wheel 20 is pushed so that the two ends of the roller 2 are respectively located on the holder 18, the motor 26 rotates forward, and the driving wheel 27 controls the rotation of the driven wheel 29 through the belt 30, thereby rotating the rotating wheel 28 fixedly connected to the driven wheel 29, and the worm part 32 on the rotating shaft 28 rotates synchronously, so that the worm wheel part 31 matched therewith rotates, and then the lead screw rotates. Due to the limiting effect of the frame 1, the holder 18 runs upward in the vertical direction until the wire rope original wheel 20 is lifted off the ground. When the wire rope original wheel 20 completes the feeding of the wire rope 35, the motor 26 rotates in the opposite direction, so that the holder 18 runs downward in the vertical direction until the wire rope original wheel 20 falls to the ground, and then the wire rope original wheel 20 is removed from the roller 2.

[0035] In this embodiment, in order to accommodate the up and down movement of the card holder 18 , a long hole 42 is provided on the frame 1 located on the running track of the card holder 18 to allow the card holder 18 to extend out of the frame 1 . The long hole 42 can limit the card holder 18 .

[0036] In order to prevent the wire rope 35 from being separated from the reversing wheel 12 when the reversing wheel 12 is feeding and unfeeding the wire rope, a door-shaped limiting rod 33 is provided on the frame 1 located on the feeding side of the reversing wheel 12. The limiting rod 33 is located in the middle of the reversing wheel 12 and the lateral width of the inner edge of the limiting rod 33 is smaller than the axial width of the reversing wheel 12. After being drawn out from the wire rope original wheel 20, the wire rope 35 first enters the limiting rod 33 and is then transferred from the bottom of the reversing wheel 12 to the first guide wheel 13.

[0037] In order to further shorten the lateral movement trajectory of the wire rope 35 on the reversing wheel 12, a limit window 34 is opened in the up and down directions on the rocker arm 5 located below the first guide wheel 13. The wire rope 35 reversed by the reversing wheel 12 passes through the limit window 34 and is transmitted to the first guide wheel 13.

[0038] Furthermore, an eccentric wheel 36 is rotatably provided on the frame 1 near the guide rod 8, and the rotational mounting point between the eccentric wheel 36 and the frame 1 deviates from the center of the eccentric wheel 36. The outer edge of the other end of the eccentric wheel 36 is fixedly sleeved on the inner ring of the pressing bearing 37, and the end face of the other end of the eccentric wheel 36 extends from the center of the inner ring of the pressing bearing 37. The handle 38 can control the eccentric wheel 36 to rotate downward in the area with a larger eccentricity so that the pressing bearing 37 and the long rod end of the brake rod 11 are pressed and matched. When a special situation occurs and an emergency braking of the wire rope original wheel 20 is required, the handle 38 is rotated, and the handle 38 controls the eccentric wheel 36 to rotate downward in the area with a larger eccentricity so that the pressing bearing 37 and the long rod end of the brake rod 11 are pressed and matched, and then the brake block 4 and the outer edge of the brake wheel 3 are pressed and braked, so that the angular velocity of the brake wheel 3 becomes smaller, and then the angular velocity of the wire rope original wheel 20 fixed with the roller 2 becomes smaller, and further rotating the handle 38 can stop the wire rope original wheel 20 completely. When emergency braking of the wire rope original wheel 20 is not needed, the handle 38 is rotated to control the eccentric wheel 36 to rotate downward in the area with a smaller eccentric distance, so that the pressing bearing 37 is separated from the brake rod 11 to avoid affecting the normal use of the brake rod 11.

[0039] In order to quickly release the steel wire rope 35 on the steel wire rope original wheel 20, as Figure 2 As shown, there are two annular grooves on the tension wheel 6, and three annular grooves on the second guide wheel 14. The steel wire rope 35 transmitted from the first guide wheel 13 passes through the first annular groove of the second guide wheel 14 and is wound around the first annular groove on the tension wheel 6, then is wound around the second annular groove of the second guide wheel 14 and continues to be wound around the second annular groove on the tension wheel 6, and finally passes through the third annular groove of the second guide wheel 14 and is connected to the steel wire rope winding and bundling device.

[0040] Preferably, Figure 2 As shown, the upper surface of the holder 18 is an arc-shaped concave structure, and a slot is provided on the holder 18 to allow the bearing 19 to be clamped. The axial ends of the bearing 19 are limited in the slot, and the roller 2 does not interfere with the holder 18.

[0041] Furthermore, in order to reduce the wear of the brake block 4 on the brake wheel 3, a brake pad 39 which is frictionally matched with the brake wheel 3 is detachably mounted on the brake block 4 and the outer edge of the brake wheel 3.

[0042] In this embodiment, since the frame 1 will vibrate during the release of the wire rope 35 on the wire rope original wheel 20, in order to prevent the brake rod 11 from vibrating significantly on the guide rod 8, as shown in FIG. Figure 6 As shown, a snap ring 41 is fixedly disposed on the guide rod 8 located above the brake rod 11 , and the snap ring 41 does not affect the braking effect of the brake rod 11 .

[0043] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A wire rope unwinding machine, comprising a frame (1), characterized in that: The machine also comprises a roller (2) rotatably mounted on the frame (1), a brake wheel (3) fixedly mounted on the roller (2) and coaxially connected to the roller (2), a brake block (4) rotatably mounted on the frame (1) and pressed against the outer edge of the brake wheel (3) for braking, a swing rod (5) located on the other side of the frame (1) opposite to the roller (2), and an L-shaped brake rod (11). One end of the swing rod (5) is hinged to the upper part of the frame (1), and the other end of the swing rod (5) is rotatably mounted with a tension wheel (6). The end of the swing rod (5) hinged to the upper part of the frame (1) is provided with a connecting ear (7) extending outward, and a guide rod (8) extending downward is hinged to the connecting ear (7). A brake return spring (9) is looped on the guide rod (8), and a stop clip (6) is provided at the lower end of the guide rod (8) for cooperating with the brake return spring (9) to stop. 10), the turning part of the brake rod (11) is rotatably arranged on the frame (1), the brake block (4) is hinged to the short rod end of the brake rod (11), and the long rod of the brake rod (11) is slidably sleeved on the guide rod (8) located at the upper end of the brake return spring (9), the hinge point between the brake rod (11) and the frame (1) is lower than the axis center height of the roller (2), and the hinge point between the brake block (4) and the brake rod (11) is higher than the axis center height of the roller (2); A reversing wheel (12) is mounted on the frame (1) below the swing rod (5), a first guide wheel (13) is rotatably mounted on the frame (1) above the swing rod (5), a second guide wheel (14) is rotatably mounted on the frame (1) above the tension wheel (6), a support rod (15) is hingedly connected to the frame (1) between the first guide wheel (13) and the second guide wheel (14), a limit spring (16) is looped on the support rod (15), a guide ring (17) is looped on the support rod (15) below the limit spring (16), and the guide ring (17) is connected to the end of the swing rod (5) close to the tension wheel (6).

2. The wire rope unwinding machine according to claim 1, characterized in that: A clamping seat (18) is provided on the frame (1) at both ends of the roller (2), and both ends of the roller (2) are rotatably mounted on the clamping seat (18) via bearings (19).

3. The wire rope unwinding machine according to claim 1, characterized in that: A limiting ring (21) is fixedly provided on the roller (2) at one end of the wire rope original wheel (20), a clamping arm (22) is extended from the limiting ring (21), and an inserting portion (23) is provided on the clamping arm (22) and is inserted and matched with the side plate of the wire rope original wheel (20). A stop ring (24) is looped on the roller (2) at the other end of the wire rope original wheel (20), and a pin body (25) is penetrated through the stop ring (24) and is inserted and matched with the roller (2).

4. The wire rope unwinding machine according to claim 2, characterized in that: A motor (26) is mounted on the upper part of the frame (1), a driving wheel (27) is coaxially mounted on the output end of the motor (26), and a rotating shaft (28) is rotatably supported on the upper part of the frame (1), a driven wheel (29) is fixedly mounted on one end of the rotating shaft (28), the driving wheel (27) and the driven wheel (29) are connected via a belt (30), and worm gear parts (31) are rotatably mounted on the upper part of the frame (1) corresponding to the holder (18) in a horizontal direction, and a worm part (32) is mounted on the rotating shaft (28) opposite to the worm gear part (31), the core shaft of each worm gear part (31) is inserted into the frame (1) and extends downward to form a lead screw, and each lead screw is rotatably engaged with a nut of the holder (18) extending out of the frame (1).

5. The wire rope unwinding machine according to claim 1, characterized in that: A door-shaped limiting rod (33) is provided on the frame (1) located on the rope feeding side of the reversing wheel (12). The limiting rod (33) is located in the middle of the reversing wheel (12), and the lateral width of the inner edge of the limiting rod (33) is smaller than the axial width of the reversing wheel (12).

6. The wire rope unwinding machine according to claim 1, characterized in that: A limit window (34) is provided on the swing rod (5) below the first guide wheel (13) in the up-down direction, and the steel wire rope (35) after being reversed by the reversing wheel (12) passes through the limit window (34) and is then transmitted to the first guide wheel (13).

7. The wire rope unwinding machine according to claim 1, characterized in that: An eccentric wheel (36) is rotatably provided on the frame (1) near the guide rod (8), the rotational mounting point between the eccentric wheel (36) and the frame (1) deviates from the center of the eccentric wheel (36), the outer edge of the other end of the eccentric wheel (36) is fixedly sleeved on the inner ring of the pressing bearing (37), and the end surface of the other end of the eccentric wheel (36) extends out of the center of the inner ring of the pressing bearing (37) to form a handle (38), and the handle (38) can control the pressing bearing (37) and the long rod end of the brake rod (11) to press and fit when the eccentric wheel (36) rotates downward in a region with a larger eccentricity.

8. The wire rope unwinding machine according to claim 1, characterized in that: The tension wheel (6) has at least two annular grooves, and the number of annular grooves on the second guide wheel (14) is greater than that on the tension wheel (6).

9. The wire rope unwinding machine according to claim 2, characterized in that: The upper surface of the holder (18) is an arc-shaped concave structure, and a slot is provided on the holder (18) to allow the bearing (19) to be clamped, the axial ends of the bearing (19) are limited in the slot, and the roller (2) does not interfere with the holder (18).

10. The wire rope unwinding machine according to claim 1, characterized in that: A brake pad (39) which is frictionally engaged with the brake wheel (3) is detachably mounted on the brake block (4) and the outer edge of the brake wheel (3) against the brake mating surface.

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