A deceleration and stopping safety device for a pay-off drum

Abstract

The present invention relates to the technical field of wire pay-off reel equipment, and provides a deceleration and shutdown safety device for a wire pay-off reel, including a turntable and a first gear sleeved on a first shaft, and a second gear meshingly connected to the first gear, a linkage unit connected to the second gear slidingly cooperates with a strip groove provided on the turntable to control the turntable to rotate gradually, and an externally threaded sleeve sleeved on the first shaft cooperates with the turntable thread to make the externally threaded sleeve approach the wire pay-off reel along the direction of the first shaft. The rotation of the wire pay-off reel drives the first gear and the linkage unit to rotate, realizing the gradual rotation of the turntable, so that the externally threaded sleeve threadedly connected to the turntable approaches the trigger unit along the first shaft and abuts its cover plate against the brake pad, and the abutting force of the cover plate is different according to the different cables on the wire pay-off reel, so as to realize different deceleration effects.

Description

Technical Field

[0001] The invention relates to the technical field of wire pay-off drum equipment, and in particular to a deceleration and stopping safety device for a wire pay-off drum. Background Art

[0002] According to the invention patent with publication number CN110817608B, its innovation lies in the fact that it is equipped with a set of hand brake devices. The winch uses a motor to drive the tire, which contacts the pay-off drum to achieve smooth release of the cable. As the cable is gradually released, more cables accumulate on the winch drum, resulting in an increase in the overall weight. Similarly, during the cable release process, the pay-off drum will be subject to an increase in the drag force of the cable. In order to ensure safe operation, the device is equipped with a hand brake assembly on the bracket, allowing the operator to quickly stop the pay-off drum manually.

[0003] However, this operation method requires a high level of operator experience. If the brake operation is not quick enough, the cable may rotate rapidly with the pay-off drum under the action of inertia until all the cables are released. If the corresponding brake force can be provided before the stall, such problems can be avoided. For this reason, we propose a deceleration and stop safety device for the pay-off drum. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a deceleration and shutdown safety device for a pay-off drum, which overcomes the deficiencies in the prior art, has a reasonable design, a compact structure, and solves the problems raised in the background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A deceleration and stopping safety device for a wire pay-off drum, comprising a wire pay-off drum and a support frame supporting the wire pay-off drum, the support frame being connected to a driving unit for driving the wire pay-off drum to rotate, a rotating shaft of the wire pay-off drum extending to an end side thereof and being connected to a first shaft body;

[0009] It includes a turntable and a first gear sleeved on a first shaft body, and a second gear meshingly connected with the first gear, a linkage unit connected to the second gear slidingly cooperates with a strip groove provided on the turntable to control the turntable to rotate gradually, an externally threaded sleeve sleeved on the first shaft body, the externally threaded sleeve cooperates with the turntable thread to make the externally threaded sleeve approach the pay-off reel along the direction of the first shaft body;

[0010] The invention also includes a trigger unit sleeved on the rotating shaft of the pay-off drum, the trigger unit includes a speed limiting ring, a brake pad connected to the speed limiting ring, and a positioning ring sleeved on the rotating shaft, the hook body and the tension spring of the annular array on the positioning ring form a trigger under the action of centrifugal force, and the hanging opening on the speed limiting ring corresponds to the hook body to form abutment;

[0011] It also includes a cover plate connected with the external threaded sleeve, and the cover plate is abutted and matched with the brake pad.

[0012] Preferably, the linkage unit comprises a linkage rod and a sliding rod, and the sliding rod connected to the end of the linkage rod is slidably matched with the strip groove provided on the turntable.

[0013] Preferably, an arc-shaped groove is provided on the turntable, and the linkage unit further comprises an arc-shaped pendulum connected to the linkage rod, and the arc-shaped pendulum is rotationally matched with the arc-shaped groove.

[0014] Preferably, the positioning ring is provided with a ring-shaped array of pins and tension springs, and the hook body is connected to the pins and tension springs to form a rotational fit.

[0015] Preferably, brake pads are equidistantly arranged on the side wall of the speed limiting ring, one side of the brake pad has a slope, and the cover plate of the brake ring is equidistantly arranged with corresponding slopes to form an abutment fit.

[0016] Preferably, a brake ring is fixedly connected to the pay-off drum, the brake ring can accommodate the trigger unit, and a gap is left between the brake ring and the speed limit ring, the gap gradually narrows along the bottom of the brake ring, and a corresponding trapezoidal deceleration block is arranged on the edge of the cover plate of the brake ring. The slope on the brake ring cover plate presses against the brake pad while the trapezoidal deceleration block is inserted into the gap. After the pay-off drum is decelerated, the hook body contracts to enable the pay-off drum to continue to rotate.

[0017] (III) Beneficial effects

[0018] The embodiment of the present invention provides a deceleration and stopping safety device for a pay-off drum.

[0019] Beneficial effects:

[0020] 1. The rotation of the pay-off drum drives the first gear and the linkage unit to rotate, so as to realize the gradual rotation of the turntable, so that the external threaded sleeve connected with the turntable thread approaches the trigger unit along the first axis and abuts its cover plate against the brake pad. The abutting force of the cover plate is different according to the different cables on the pay-off drum, so as to realize different deceleration effects.

[0021] 2. After deceleration, the centrifugal force is not enough to support the hook body against the hanging mouth, and the hook body contracts under the action of the tension spring. At this time, the pay-off drum continues to rotate. This design allows the operation to continue after deceleration without completely stopping and restarting, thereby improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structural turntable of the present invention;

[0024] Figure 3 For the present invention Figure 2 A three-dimensional schematic diagram of

[0025] Figure 4 For the present invention Figure 2 A rear-view stereoscopic schematic diagram of

[0026] Figure 5 For the present invention Figure 2 Schematic diagram of removing the first gear;

[0027] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of A;

[0028] Figure 7 It is a schematic diagram of the trigger unit of the present invention;

[0029] Figure 8 For the present invention Figure 7 A three-dimensional schematic diagram of .

[0030] In the figure: 1. pay-off reel; 11. support frame; 2. turntable; 21. first shaft; 22. first gear; 23. linkage unit; 231. linkage rod; 232. slide bar; 233. arc-shaped pendulum; 24. second shaft; 25. second gear; 26. strip groove; 27. arc-shaped groove; 28. external threaded sleeve; 3. brake ring; 4. speed limit ring; 41. hanging mouth; 42. brake pad; 5. positioning ring; 51. pin shaft; 52. hook body; 53. tension spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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] Refer to the attached Figure 1-8The present invention provides a deceleration and stopping safety device for a wire pay-off drum, which specifically includes a wire pay-off drum 1, a support frame 11 for supporting the wire pay-off drum 1, and a driving unit for driving the wire pay-off drum 1 to rotate. The driving unit is a tire connected to the output end of the motor and abuts against the disk body of the wire pay-off drum 1 to drive the wire pay-off drum 1 to rotate. The bearings arranged on the support frame 11 are used to support the wire pay-off drum 1.

[0033] As required, the turntable 2 is sleeved on one side or both sides of the pay-off drum 1, and the trigger unit is sleeved on the rotating shaft of the pay-off drum 1;

[0034] The turntable 2 is concentrically arranged with the pay-off disk 1, and the turntable 2 is rotatably sleeved on the shaft of the pay-off disk 1, the shaft of the pay-off disk 1 extends to the turntable 2 and is connected to the first shaft 21, the first gear 22 fixedly sleeved on the first shaft 21 rotates synchronously with the pay-off disk 1, and the turntable 2 does not rotate synchronously with the pay-off disk 1, the turntable 2 is wrapped by a shaft sleeve and connected to the support frame 11 so that it rotates independently, and the second shaft 24 is connected to the side wall of the support frame 11, the second shaft 24 is fixedly sleeved with a second gear 25 and a linkage unit 23, the linkage unit 23 is located near the bottom of the second gear 25, and the second gear 25 is meshed with the first gear 22;

[0035] Refer to the attached Figure 6 The linkage unit 23 is used to drive the turntable 2 to rotate. The linkage unit 23 includes a linkage rod 231, a slide rod 232, and an arc-shaped pendulum 233. The slide rod 232 connected to one end of the linkage rod 231 is slidably matched with the strip groove 26 provided on the turntable 2, and the arc-shaped pendulum 233 connected to the other end is slidably matched with the arc groove 27 provided on the turntable 2, so that the linkage unit 23 can drive the turntable 2 to rotate a part of the rotation by rotating one circle, wherein the externally threaded sleeve 28 slidably sleeved on the first shaft body 21 is threadedly matched with the turntable 2. When the turntable 2 rotates, the externally threaded sleeve 28 is driven to slide along the direction of the first shaft body 21 and approach the direction of the pay-off reel 1 for abutment.

[0036] The trigger unit includes a speed limiting ring 4 installed on the side end of the pay-off drum 1 and a positioning ring 5 sleeved on the rotating shaft. The pin shaft 51 and the tension spring 53 of the annular array on the positioning ring 5 correspond to each other, and the hook body 52 is connected to the pin shaft 51 and the tension spring 53 to form a rotational fit, that is, the pin shaft 51 is equidistantly inserted in an annular manner on the positioning ring 5, and the tail end of the hook body 52 is connected to the pin shaft 51, and then connected to the head of the hook body 52 according to the tension spring 53 connected to the positioning ring 5. When the pay-off drum 1 stalls or rotates too fast, the hook body 52 stretches the tension spring 53 under the action of centrifugal force, and the hook body 52 rotates around the pin shaft 51 and abuts against the hanging mouth 41 of the speed limiting ring 4. At this time, the speed limiting ring 4 is driven to rotate as a whole. On the contrary, when the speed of the pay-off drum 1 is normal, the centrifugal force is not enough to rotate the hook body 52 out. At this time, the tension spring 53 pulls the hook body 52 to approach the center of the positioning ring 5, and the positioning ring 5 rotates freely following the pay-off drum 1;

[0037] A brake pad 42 is equidistantly arranged on a single side wall of the speed limiting ring 4, one side of the brake pad 42 has a slope, and a cover plate of the brake ring 3 is equidistantly arranged with a slope corresponding thereto, the cover plate of the brake ring 3 is connected and matched with the externally threaded sleeve 28, the pay-off drum 1 drives the first gear 22 to rotate, thereby driving the linkage unit 23 to drive the turntable 2 to rotate, and because the externally threaded sleeve 28 is threadedly matched with the turntable 2, the externally threaded sleeve 28 approaches the pay-off drum 1 along the direction of the first shaft 21, and at this time, the externally threaded sleeve 28 is connected to the externally threaded sleeve 28. The cover plate of the connected brake ring 3 abuts against the brake pad 42 to increase the static friction and also improve the deceleration effect of the speed limit ring 4 as a whole. When the pay-off drum 1 stalls or accelerates, the hook body 52 pops out and abuts against the hanging opening 41 of the speed limit ring 4 to achieve deceleration and braking. Since the number of turns of the pay-off drum 1 is different, the amount of cable on the pay-off drum 1 is also different, and the speed limit ring 4 is provided with continuous friction by the continuous rotation of the pay-off drum 1, which can provide different friction according to different working conditions and provide different deceleration and braking effects.

[0038] In order to further improve the deceleration effect, a brake ring 3 is fixedly connected to the pay-off drum 1. The brake ring 3 can accommodate the trigger unit, and a gap is left between the brake ring 3 and the speed limit ring 4. The gap gradually narrows along the bottom of the brake ring 3, and a corresponding trapezoidal deceleration block is arranged on the edge of the cover plate of the brake ring 3. While the slope on the cover plate of the brake ring 3 presses against the brake pad 42, the trapezoidal deceleration block is inserted into the gap to further increase the friction force. After the pay-off drum 1 is decelerated, the hook body 52 contracts to enable the pay-off drum 1 to continue to rotate.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A deceleration and stopping safety device for a wire pay-off drum, comprising a wire pay-off drum (1) and a support frame (11) supporting the wire pay-off drum (1), a driving unit for driving the wire pay-off drum (1) to rotate is connected to the support frame (11), and a rotating shaft of the wire pay-off drum (1) extends to its end side and is connected to a first shaft body (21); Features: The invention comprises a rotating disk (2) and a first gear (22) sleeved on a first shaft (21), and a second gear (25) meshingly connected with the first gear (22); a linkage unit (23) connected to the second gear (25) slidably cooperates with a strip groove (26) provided on the rotating disk (2) to control the rotating disk (2) to rotate gradually; An externally threaded sleeve (28) is sleeved on the first shaft (21), and the externally threaded sleeve (28) is threadably matched with the rotating disk (2) so that the externally threaded sleeve (28) moves toward the pay-off disk (1) along the direction of the first shaft (21); It also includes a triggering unit sleeved on the rotating shaft of the pay-off drum (1); The trigger unit comprises a speed limiting ring (4), a brake pad (42) connected to the speed limiting ring (4), and a positioning ring (5) sleeved on the rotating shaft. The hook bodies (52) and tension springs (53) in an annular array on the positioning ring (5) are triggered under the action of centrifugal force. The hanging opening (41) provided on the speed limiting ring (4) and the hook bodies (52) are correspondingly abutted against each other. It also includes a cover plate connected to the external threaded sleeve (28), and the cover plate is in abutment with the brake pad (42).

2. A deceleration and stopping safety device for a pay-off drum as claimed in claim 1, characterized in that: The linkage unit (23) comprises a linkage rod (231) and a sliding rod (232), wherein the sliding rod (232) connected to the end of the linkage rod (231) is slidably matched with a strip groove (26) provided on the rotating disk (2).

3. A deceleration and stopping safety device for a pay-off drum as claimed in claim 1, characterized in that: The rotating disk (2) is provided with an arc-shaped groove (27), and the linkage unit (23) further comprises an arc-shaped pendulum (233) connected to the linkage rod (231), and the arc-shaped pendulum (233) is rotatably matched with the arc-shaped groove (27).

4. A deceleration and stopping safety device for a pay-off drum as claimed in claim 1, characterized in that: The positioning ring (5) has a circular array of pins (51) and tension springs (53), and the hook body (52) is connected to the pins (51) and the tension springs (53) to form a rotational fit.

5. A deceleration and stopping safety device for a pay-off drum as claimed in claim 1, characterized in that: Braking pads (42) are equidistantly arranged on the side wall of the speed limiting ring (4), one side of the braking pad (42) has a slope, and the cover plate of the brake ring (3) is equidistantly arranged with corresponding slopes to form abutment fit.

6. A deceleration and stopping safety device for a pay-off drum as claimed in claim 1, characterized in that: The pay-off drum (1) is fixedly connected with a brake ring (3), the brake ring (3) can accommodate a trigger unit, and a gap is left between the brake ring (3) and the speed limit ring (4), the gap gradually narrows along the bottom of the brake ring (3), and a corresponding trapezoidal deceleration block is arranged around the edge of the cover plate of the brake ring (3), and the trapezoidal deceleration block is inserted into the gap while the slope on the cover plate of the brake ring (3) abuts against the brake pad (42). After the pay-off drum (1) is decelerated, the hook body (52) contracts to enable the pay-off drum (1) to continue rotating.

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