Pay-off pulley convenient to adjust

Abstract

The invention discloses a pay-off pulley convenient to adjust, relates to the technical field of pay-off pulleys, solves the technical problem of inconvenience in adjustment, and comprises a base, a U-shaped frame with two U-shaped plates is rotatably mounted on the top surface of the base, and a first roller is rotatably mounted on the two U-shaped plates; the base is provided with an adjusting assembly used for adjusting the paying-off size. The adjusting assembly comprises a first telescopic rod fixedly mounted on the inner top wall of the U-shaped frame, a mounting frame with a second roller is fixedly mounted at the end, close to the first roller, of the first telescopic rod, and an adsorption block is fixedly mounted on the side, away from the second roller, of the mounting frame. An electromagnet used for magnetically attracting the adsorption block is fixedly installed on the side, close to the second roller, of the U-shaped frame. And the distance between the second roller and the first roller is controlled through the magnetic force of the electromagnet to the adsorption block, adjustment and use are convenient, the adjustment capacity of the device is improved, and the flexible applicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of a wire-releasing pulley, and in particular to a wire-releasing pulley which is easy to adjust. Background Art

[0002] Nowadays, cables are used in many electrical wiring layouts, and the cables themselves are relatively heavy. It is particularly difficult to drag the cables around some corners or on uneven ground. The most critical point is that some sharp corners or uneven ground will damage the outer protective layer of the cables, and even damage the wiring harness inside the cables, during the cable dragging process. Therefore, many cable-laying pulleys are used when arranging cables. The cable-laying pulleys can also be installed on vehicles for cable-laying operations. However, during the cable laying process, the cables often move due to the tension. Once the fixed pulley moves, the cables are easily torn. The damage to the cables during the construction process will cause direct and significant economic losses, and will also cause great safety hazards. For example, the Chinese invention patent with patent publication number CN114123044A solves the problem of cable damage during the construction process.

[0003] However, when the above device is in use, it is not convenient to flexibly adjust the distance between the pay-off wheels according to the different diameters of the cables. It is inconvenient to adjust and use, which affects the adjustment ability of the device, the flexibility and applicability of the device, and the working efficiency of the pay-off. For this reason, based on the technical defects, we have proposed a pay-off pulley that is easy to adjust and can solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a pay-off pulley that is easy to adjust, to solve the following technical problems:

[0005] It is not convenient to flexibly adjust the distance between the pay-off wheels according to the different diameters of the cables, which affects the adjustment ability of the device, the flexibility and applicability of the device, and the working efficiency of the pay-off device.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A wire-releasing pulley that is easy to adjust, comprising a base, a U-shaped frame with two U-shaped plates rotatably mounted on the top surface of the base, first rollers rotatably mounted on the two U-shaped plates, and an adjustment component for adjusting the wire-releasing size is arranged on the base;

[0008] The adjustment component includes a first telescopic rod fixedly mounted on the inner top wall of the U-shaped frame, a mounting frame with a second roller is fixedly mounted on the end of the first telescopic rod close to the first roller, an adsorption block is fixedly mounted on the side of the mounting frame away from the second roller, an electromagnet for magnetically attracting the adsorption block is fixedly mounted on the side of the U-shaped frame close to the second roller, and a power generation unit for converting the kinetic energy of the rotation of the first roller into electrical energy is arranged on the U-shaped frame.

[0009] As a further solution of the present invention: the power generation unit includes a first gear rotatably mounted on a U-shaped plate, a second gear rotatably mounted on a side of the U-shaped frame close to the first gear, a generator is fixedly mounted on a side of the U-shaped frame close to the second gear, a battery is fixedly mounted on the top of the U-shaped frame, and an electric wire is fixedly mounted between the battery and the generator.

[0010] As a further solution of the present invention: the first gear and the second gear are meshed with each other, the driving end of the generator is fixedly mounted on the second gear, and the driving end of the first gear slides through the U-shaped plate and is fixedly mounted on the first roller.

[0011] As a further solution of the present invention: protective plates are fixedly installed on both sides of the installation frame, a stabilizing arc plate is fixedly installed on one side of the protective plate close to the first roller, and the second roller is installed between the two stabilizing arc plates.

[0012] As a further solution of the present invention: a first spring is fixedly installed on one side of the installation frame close to the first telescopic rod, the other end of the first spring is fixedly installed on the inner top wall of the U-shaped frame, and the first spring is nested on the outer surface of the first telescopic rod.

[0013] As a further solution of the present invention: a limiting assembly is arranged on the U-shaped frame, and the limiting assembly includes a mounting plate fixedly installed on the U-shaped frame near the base, a movable slider is arranged on the mounting plate, a connecting rope is fixedly installed on the side of the slider near the base, a stabilizing rod is fixedly installed between the mounting plate and the inner bottom wall of the U-shaped frame, a connecting plate is slidably installed on the stabilizing rod, a limiting rod is fixedly installed on the side of the connecting plate away from the mounting plate, and a side of the base near the U-shaped frame is provided with circumferentially arranged limiting holes.

[0014] As a further solution of the present invention: a second spring is fixed on the side of the connecting plate away from the limiting rod, the other end of the second spring is fixedly mounted on the mounting plate, the second spring is nested on the outer surface of the stabilizing rod, the other end of the connecting rope slides through the mounting plate and is fixedly mounted on the connecting plate, and the other end of the limiting rod slides through the U-shaped frame and is inserted into the limiting hole.

[0015] As a further solution of the present invention: a slide groove is opened on the side of the mounting plate close to the first roller, the slider is slidably installed in the slide groove, a bidirectional screw rod is rotatably installed in the slide groove, the slider is threadedly installed on the bidirectional screw rod, a servo motor is fixedly installed on the side of the U-shaped frame away from the generator, and the output end of the servo motor slides through the U-shaped frame and the mounting plate and is fixedly installed on the bidirectional screw rod.

[0016] As a further solution of the present invention: a buffer assembly is arranged on the base, and the buffer assembly includes a second telescopic rod with a damping ring fixedly mounted on the bottom surface of the base, a fixed plate is fixedly mounted on one end of the second telescopic rod away from the base, elastic plates are rotatably mounted on both ends of the fixed plate and the base, and a third spring is fixedly mounted between the two elastic plates.

[0017] As a further solution of the present invention: receiving grooves are provided on both sides of the fixing plate, support rods are rotatably installed in the receiving grooves, and waist-shaped through holes for installing bolts are provided at positions of the receiving grooves close to the second telescopic rods.

[0018] Beneficial effects of the present invention:

[0019] (1) The power generation unit in the adjustment component is convenient for controlling the distance between the second roller and the first roller by the magnetic force of the electromagnet on the adsorption block, which is convenient for adjustment and use, is conducive to improving the adjustment ability of the device, is conducive to improving the flexibility and applicability of the device, and is conducive to improving the working efficiency of the device for laying out the wire;

[0020] (2) The limiting rod in the limiting assembly is inserted into the limiting hole, which is convenient for limiting and stabilizing the position of the U-shaped frame on the base, and is convenient for adjusting the line-laying direction of the first roller according to needs, which is convenient for limiting adjustment, is conducive to improving the limiting stability of the device, and is conducive to improving the flexible adjustment ability of the device;

[0021] (3) The elastic plate and the third spring in the buffer assembly play a role of buffering and shock absorption in cooperation with the damper, which is beneficial to improving the buffering and shock absorption effect of the device and improving the working efficiency of the device's wire laying. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of a pay-off pulley that is easy to adjust in the present invention;

[0024] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 4 It is a side view structural schematic diagram of a pay-off pulley that is easy to adjust in the present invention;

[0027] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at C in the middle;

[0028] Figure 6 It is a schematic diagram of the top view of a pay-off pulley that is easy to adjust in the present invention;

[0029] Figure 7 yes Figure 6 Schematic diagram of the enlarged structure at D in the middle.

[0030] In the figure: 1. base; 2. U-shaped frame; 3. U-shaped plate; 4. adjustment component; 41. first telescopic rod; 42. first spring; 43. mounting frame; 44. second roller; 45. protective plate; 46. stabilizing arc plate; 47. adsorption block; 48. electromagnet; 49. battery; 410. wire; 411. first gear; 412. second gear; 413. generator; 5. limit assembly; 51. servo motor; 52. mounting plate; 53. stabilizing rod; 54. second spring; 55. slider; 56. connecting rope; 57. connecting plate; 58. limit rod; 59. limit hole; 510. slide groove; 511. bidirectional screw rod; 6. buffer assembly; 61. elastic plate; 62. third spring; 63. second telescopic rod; 64. storage groove; 65. support rod; 66. waist-shaped through hole; 67. fixing plate; 7. first roller. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1

[0033] See also Figure 1-Figure 7 As shown, the present invention is a wire-releasing pulley that is easy to adjust, comprising a base 1, a U-shaped frame 2 with two U-shaped plates 3 is rotatably mounted on the top surface of the base 1, a first roller 7 is rotatably mounted on the two U-shaped plates 3, the first roller 7 plays a role of wire-releasing, and an adjusting component 4 for adjusting the wire-releasing size is arranged on the base 1;

[0034] The adjusting component 4 includes a first telescopic rod 41 fixedly mounted on the inner top wall of the U-shaped frame 2, and a mounting frame 43 with a second roller 44 is fixedly mounted on one end of the first telescopic rod 41 close to the first roller 7. The first telescopic rod 41 plays a role in supporting and stabilizing the mounting frame 43, and the second roller 44 is rotatably mounted on the mounting frame 43. The second roller 44 cooperates with the first roller 7 to facilitate adjustment of the distance between the first roller 7 and the second roller 44 under the magnetic control of the electromagnet 48, so that the device is convenient for laying cables of different diameters. An adsorption block 47 is fixedly mounted on the side of the mounting frame 43 away from the second roller 44, and an electromagnet 48 for magnetically attracting the adsorption block 47 is fixedly mounted on the side of the U-shaped frame 2 close to the second roller 44. A power generation unit for converting the kinetic energy of the rotation of the first roller 7 into electrical energy is provided on the U-shaped frame 2.

[0035] The power generation unit includes a first gear 411 rotatably mounted on the U-shaped plate 3, a second gear 412 is rotatably mounted on one side of the U-shaped frame 2 close to the first gear 411, and a generator 413 is fixedly mounted on one side of the U-shaped frame 2 close to the second gear 412. The generator 413 can convert the kinetic energy of the first roller 7 during the line-releasing process into electrical energy, and charge the battery 49 through the wire 410, while discharging the electricity charged in the battery 49 to the electromagnet 48, so that the electromagnet 48 adsorbs the adsorption block 47, so as to facilitate the adjustment of the distance between the first roller 7 and the second roller 44, and facilitate the adjustment and use. The battery 49 is fixedly mounted on the top of the U-shaped frame 2, and the wire 410 is fixedly mounted between the battery 49 and the generator 413, and the battery 49 and the electromagnet 48 are electrically connected. The first gear 411 and the second gear 412 are meshed with each other, and the driving end of the generator 413 is fixedly mounted on the second gear 412, and the driving end of the first gear 411 slides through the U-shaped plate 3 and is fixedly mounted on the first roller 7.

[0036] Protective plates 45 are fixedly installed on both sides of the installation frame 43, and a stabilizing arc plate 46 is fixedly installed on one side of the protective plate 45 close to the first roller 7. The protective plate 45 cooperates with the stabilizing arc plate 46 to limit and suppress the cable on the first roller 7 to stop the line release. In addition, the stabilizing arc plate 46 has a little elasticity, and only one end of the stabilizing arc plate 46 is fixedly connected to the protective plate 45, and has a certain deformation ability. The stabilizing arc plate 46 also plays a role in guiding the calibration cable to be inserted between the second roller 44 and the first roller 7, which is beneficial to improving the accuracy of cable installation and line release. The second roller 44 is installed between the two stabilizing arc plates 46, and the second roller 44 is fixedly installed on one side of the installation frame 43 close to the first telescopic rod 41. A spring 42, the other end of the first spring 42 is fixedly mounted on the inner top wall of the U-shaped frame 2, and the first spring 42 is nested and mounted on the outer surface of the first telescopic rod 41. The first spring 42 drives the mounting frame 43 to return to its original position elastically, so as to drive the second roller 44 to elastically clamp the cable, thereby stopping the line release, and can convert the kinetic energy of the rotation of the first roller 7 into electrical energy to supply the power magnet 48 to control the magnetic attraction of the adsorption block 47, so as to flexibly adjust the distance between the second roller 44 and the first roller 7 according to the different diameters of the cable, and facilitate adjustment and use, which is beneficial to improving the adjustment ability of the device, the flexibility and applicability of the device, and the working efficiency of the line release of the device.

[0037] Embodiment 2

[0038] See also Figure 4-Figure 7 As shown, on the basis of the first embodiment, a limiting assembly 5 is provided on the U-shaped frame 2, and the limiting assembly 5 includes a mounting plate 52 fixedly mounted on the U-shaped frame 2 at a position close to the base 1, and a movable slider 55 is provided on the mounting plate 52, and a connecting rope 56 is fixedly mounted on the side of the slider 55 close to the base 1, and the slider 55 drives the connecting rope 56 to slide on the mounting plate 52, and a stabilizing rod 53 is fixedly mounted between the mounting plate 52 and the inner bottom wall of the U-shaped frame 2, and a connecting plate 57 is slidably installed on the stabilizing rod 53, and the stabilizing rod 53 plays a role in stabilizing the connecting plate 57, and a limiting rod 58 is fixedly mounted on the side of the connecting plate 57 away from the mounting plate 52, and a circumferentially arranged limiting holes 59 are opened on the side of the base 1 close to the U-shaped frame 2, and the limiting rod 58 is inserted into the limiting hole 59 to play a role in limiting and stabilizing the rotation position of the U-shaped frame 2 on the base 1, so as to facilitate the adjustment of the direction of the line release as needed.

[0039] A second spring 54 is fixed on the side of the connecting plate 57 away from the limiting rod 58, and the other end of the second spring 54 is fixedly mounted on the mounting plate 52. The second spring 54 is nested and mounted on the outer surface of the stabilizing rod 53. The second spring 54 plays a role in driving the connecting plate 57 to elastically reset. The other end of the connecting rope 56 slides through the mounting plate 52 and is fixedly mounted on the connecting plate 57. The other end of the limiting rod 58 slides through the U-shaped frame 2 and is inserted into the limiting hole 59. A sliding groove 510 is provided on the side of the mounting plate 52 close to the first roller 7. The slider 55 is slidably mounted in the sliding groove 510. A two-way locking member is rotatably mounted in the sliding groove 510. There are two screw rods 511 and sliders 55, which are respectively installed at positions near the two ends of the bidirectional screw rod 511. The slider 55 is threadedly installed on the bidirectional screw rod 511. A servo motor 51 is fixedly installed on the side of the U-shaped frame 2 away from the generator 413. The output end of the servo motor 51 slides through the U-shaped frame 2 and the mounting plate 52 and is fixedly installed on the bidirectional screw rod 511, which is convenient for adjustment and use, and is convenient for limiting and stabilizing the position of the U-shaped frame 2 on the base 1, and is convenient for adjusting the line-releasing direction of the first roller 7 as needed. It is convenient for limit adjustment, which is beneficial to improving the limit stability of the device and the flexible adjustment ability of the device.

[0040] Embodiment 3

[0041] See also Figure 1 , Figure 4 and Figure 6 As shown, on the basis of the first and second embodiments, a buffer assembly 6 is provided on the base 1, and the buffer assembly 6 includes a second telescopic rod 63 with a damping ring fixedly mounted on the bottom surface of the base 1, the damping ring reduces the reverse elastic force of the elastic plate 61 and the third spring 62, and plays a role of buffering and shock absorption. The second telescopic rod 63 plays a role of supporting and stabilizing the base 1, and a fixed plate 67 is fixedly mounted on the end of the second telescopic rod 63 away from the base 1, and elastic plates 61 are rotatably mounted on the fixed plate 67 and both ends of the base 1, and the elastic plate 61 plays a role of buffering and shock absorption of the base 1 subjected to external forces, and a third spring 62 is fixedly mounted between the two elastic plates 61, and the third spring 62 cooperates with the elastic plate 61 to play a role of buffering and shock absorption of the base 1. The fixed plate 67 is provided with storage grooves 64 on both sides, and support rods 65 are rotatably installed in the storage grooves 64. The support rods 65 can be stored in the storage grooves 64, and the support rods 65 play a role in increasing the contact surface of the fixed plate 67, which is beneficial to improving the stability of the fixed plate 67. The storage grooves 64 are provided with waist-shaped through holes 66 for installing bolts at a position close to the second telescopic rod 63. Bolts are installed in the waist-shaped through holes 66, which is convenient for fixing the fixed plate 67 at a required position. Moreover, the equipment is generally installed on a vehicle, which is convenient for wire laying and laying, which is beneficial to improving the stability of the first roller 7 during the wire laying and laying process, and is convenient for buffering and shock absorption, which is beneficial to improving the buffering and shock absorption effect of the device and the working efficiency of the wire laying and laying of the device.

[0042] Working principle of the present invention: when using the device, first pull out the support rod 65 from the storage groove 64, then insert the bolt into the waist-shaped through hole 66, then fix the fixing plate 67 on the vehicle for laying and laying the wires, and then start the electromagnet 48, so that the electromagnet 48 uses the electricity in the battery 49 to magnetically attract the adsorption block 47, and at the same time, the suction force of the electromagnet 48 on the adsorption block 47 drives the installation frame 43 to squeeze the first telescopic rod 41 and the first spring 42, so that the first telescopic rod 41 and the first spring 42 are in a compressed state, and then pull the cable under the guidance of the stable arc plate 46 to be inserted between the first roller 7 and the second roller 44, and then pull the cable to rotate on the first roller 7, so that the first roller 7 drives the first gear 411 to rotate, and at the same time, the first gear 411 engages to drive the second gear 412 to rotate, so that the second gear 412 drives the generator 413 to rotate and generate electricity, so that the generated electricity is stored in the battery 49 through the wire 410 for use by the electromagnet 48;

[0043] When adjusting the rotation direction of the U-shaped frame 2 on the base 1, first start the servo motor 51, so that the servo motor 51 drives the bidirectional screw rod 511 to rotate in the slide groove 510, and at the same time, the bidirectional screw rod 511 drives the slider 55 to move relatively in the slide groove 510, and at the same time, the slider 55 pulls the connecting rope 56 to slide on the mounting plate 52, and at the same time, the connecting rope 56 drives the connecting plate 57 to slide on the stabilizing rod 53 to squeeze the second spring 54, so that the second spring 54 is in a compressed state, and at the same time, the connecting plate 57 drives the limiting rod 58 to slide on the U-shaped frame 2, and at the same time, the limiting rod 58 is pulled out from the limiting hole 59, and then the U-shaped frame 2 is rotated on the base 1 under the external force of the cable. After adjusting the direction of the U-shaped frame 2, the servo motor 51 is started in the reverse direction, and the above operation is repeated, so that the elastic reset force of the second spring 54 drives the limiting rod 58 to be inserted into the limiting hole 59 to limit and stabilize the U-shaped frame 2;

[0044] During the laying process, the U-shaped frame 2 is subjected to external force to squeeze the base 1, so that the base 1 squeezes the elastic plate 61 and the second telescopic rod 63, so that the elastic plate 61 and the second telescopic rod 63 are in a compressed state, and at the same time, the elastic plate 61 stretches the third spring 62, so that the third spring 62 is in a stretched state, which is convenient for buffering and shock absorption.

[0045] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A pay-off pulley that is easy to adjust, comprising a base (1), characterized in that: A U-shaped frame (2) with two U-shaped plates (3) is rotatably mounted on the top surface of the base (1), a first roller (7) is rotatably mounted on the two U-shaped plates (3), and an adjustment component (4) for adjusting the wire laying size is provided on the base (1); The adjustment assembly (4) comprises a first telescopic rod (41) fixedly mounted on the inner top wall of the U-shaped frame (2); a mounting frame (43) with a second roller (44) is fixedly mounted on one end of the first telescopic rod (41) close to the first roller (7); a suction block (47) is fixedly mounted on the side of the mounting frame (43) away from the second roller (44); an electromagnet (48) for magnetically attracting the suction block (47) is fixedly mounted on the side of the U-shaped frame (2) close to the second roller (44); and a power generation unit for converting kinetic energy generated by the rotation of the first roller (7) into electrical energy is arranged on the U-shaped frame (2).

2. The easily adjustable pay-off pulley according to claim 1, characterized in that: The power generation unit comprises a first gear (411) rotatably mounted on a U-shaped plate (3); a second gear (412) rotatably mounted on a side of the U-shaped frame (2) close to the first gear (411); a generator (413) is fixedly mounted on a side of the U-shaped frame (2) close to the second gear (412); a storage battery (49) is fixedly mounted on the top of the U-shaped frame (2); and an electric wire (410) is fixedly mounted between the storage battery (49) and the generator (413).

3. The easily adjustable pay-off pulley according to claim 2 is characterized in that: The first gear (411) and the second gear (412) are meshed with each other, the driving end of the generator (413) is fixedly mounted on the second gear (412), and the driving end of the first gear (411) slides through the U-shaped plate (3) and is fixedly mounted on the first roller (7).

4. The easily adjustable pay-off pulley according to claim 1 is characterized in that: Protective plates (45) are fixedly mounted on both sides of the mounting frame (43), and a stabilizing arc plate (46) is fixedly mounted on one side of the protective plate (45) close to the first roller (7), and the second roller (44) is mounted between the two stabilizing arc plates (46).

5. The easily adjustable pay-off pulley according to claim 4 is characterized in that: A first spring (42) is fixedly mounted on one side of the mounting frame (43) close to the first telescopic rod (41); the other end of the first spring (42) is fixedly mounted on the inner top wall of the U-shaped frame (2); and the first spring (42) is nested on the outer surface of the first telescopic rod (41).

6. The easily adjustable pay-off pulley according to claim 1, characterized in that: A limit assembly (5) is provided on the U-shaped frame (2), and the limit assembly (5) comprises a mounting plate (52) fixedly mounted on the U-shaped frame (2) at a position close to the base (1); a movable slider (55) is provided on the mounting plate (52); a connecting rope (56) is fixedly mounted on a side of the slider (55) close to the base (1); a stabilizing rod (53) is fixedly mounted between the mounting plate (52) and the inner bottom wall of the U-shaped frame (2); a connecting plate (57) is slidably mounted on the stabilizing rod (53); a limit rod (58) is fixedly mounted on a side of the connecting plate (57) away from the mounting plate (52); and a circumferentially arranged limit holes (59) are provided on a side of the base (1) close to the U-shaped frame (2).

7. The easily adjustable pay-off pulley according to claim 6 is characterized in that: A second spring (54) is fixed on one side of the connecting plate (57) away from the limiting rod (58); the other end of the second spring (54) is fixedly mounted on the mounting plate (52); the second spring (54) is nested on the outer surface of the stabilizing rod (53); the other end of the connecting rope (56) slides through the mounting plate (52) and is fixedly mounted on the connecting plate (57); the other end of the limiting rod (58) slides through the U-shaped frame (2) and is inserted into the limiting hole (59).

8. The easily adjustable pay-off pulley according to claim 7 is characterized in that: A slide groove (510) is provided on a side of the mounting plate (52) close to the first roller (7), the slider (55) is slidably mounted in the slide groove (510), a bidirectional screw rod (511) is rotatably mounted in the slide groove (510), the slider (55) is threadedly mounted on the bidirectional screw rod (511), a servo motor (51) is fixedly mounted on a side of the U-shaped frame (2) away from the generator (413), and an output end of the servo motor (51) slides through the U-shaped frame (2) and the mounting plate (52) and is fixedly mounted on the bidirectional screw rod (511).

9. The easily adjustable pay-off pulley according to claim 1, characterized in that: The base (1) is provided with a buffer assembly (6), the buffer assembly (6) comprising a second telescopic rod (63) with a damping ring fixedly mounted on the bottom surface of the base (1), a fixed plate (67) fixedly mounted on one end of the second telescopic rod (63) away from the base (1), elastic plates (61) rotatably mounted at both ends of the fixed plate (67) and the base (1), and a third spring (62) fixedly mounted between the two elastic plates (61).

10. The easily adjustable pay-off pulley according to claim 9, characterized in that: The fixing plate (67) is provided with receiving grooves (64) on both sides, a support rod (65) is rotatably installed in the receiving groove (64), and a waist-shaped through hole (66) for installing a bolt is provided at a position of the receiving groove (64) close to the second telescopic rod (63).

Images