Retarder with friction reducing mechanism

Abstract

The invention relates to the technical field of retarders, and discloses a retarder with a friction speed reducing mechanism, which comprises a starting rotating wheel, an aluminum pipe is connected to the outer side of the starting rotating wheel, a one-way ratchet wheel is arranged in the aluminum pipe, and a speed increasing gear set is connected to the outer side of the one-way ratchet wheel. The speed increasing gear set comprises a speed increasing gear set first-stage gear and a speed increasing gear set second-stage gear which are meshed in sequence; matched clamping teeth are arranged on the surface of a first-stage gear of the speed increasing gear set and matched with aluminum pipe clamping teeth on the inner wall of the aluminum pipe. When the rotating speed of the aluminum pipe is increased, the friction flail block overcomes elasticity of the elastic ring to open due to centrifugal force, the surface rubber strip makes contact with the inner wall of the friction cylinder to generate friction resistance, and the rotating speed is rapidly reduced; when the rotating speed is reduced until the centrifugal force is insufficient, the flail block resets, the rotating speed is increased again, the rotating speed of the aluminum pipe is stabilized in a reasonable interval through circulation, the problem that a traditional retarder is slow in braking response is effectively solved, and quick response and stable control over the running speed of equipment are achieved.

Description

Technical Field

[0001] The present invention relates to the field of retarders, and in particular to a retarder with a friction deceleration mechanism. Background Art

[0002] In the field of modern mechanical transmission and braking, retarders play a vital role and are widely used in many fields such as vehicles and industrial equipment to control the operating speed of equipment and achieve smooth deceleration and braking. At present, there are many types of common retarders, such as hydraulic retarders, eddy current retarders and mechanical friction retarders. The braking efficiency problem of traditional mechanical friction retarders is particularly prominent. Its braking principle determines that in the initial stage of braking, it takes a certain amount of time for the braking components to reach sufficient friction, resulting in a slow braking response, which makes it difficult to meet the rapid deceleration requirements of the equipment in emergency situations. Based on this, we propose a retarder with a friction deceleration mechanism. Summary of the Invention

[0003] In order to solve the technical problem of slow braking response in the prior art, the present invention provides a retarder with a friction deceleration mechanism.

[0004] The present invention is implemented by the following technical solution: a retarder with a friction deceleration mechanism, comprising a starting wheel, an aluminum tube connected to the outside of the starting wheel, a one-way ratchet provided inside the aluminum tube, a speed-increasing gear set connected to the outside of the one-way ratchet, the speed-increasing gear set comprising a first gear of the speed-increasing gear set and a second gear of the speed-increasing gear set meshed in sequence;

[0005] Aluminum tube teeth are provided on the inner wall of the aluminum tube, and an extended through rod is fixedly connected to the first-stage gear of the speed-increasing gear set. Matching teeth are provided on the surface of the first-stage gear of the speed-increasing gear set, and the matching teeth match the aluminum tube teeth on the inner wall of the aluminum tube.

[0006] The top plane of the secondary gear of the speed-increasing gear set is connected to the gear shaft connecting plate, the surface of the gear shaft connecting plate is connected to the friction block shaft, a friction block is sleeved on the friction block shaft, a block shaft is fixedly installed on the side of the friction block shaft close to the gear shaft connecting plate, a plug rod is fixedly connected to the side of the friction block shaft close to the friction block, and a through hole is opened through the surface of the friction block;

[0007] A through hole is provided at the center of the gear shaft connecting disk, and the throw block shaft passes through the through hole on the surface of the gear shaft connecting disk and is inserted into the second-stage gear of the speed-increasing gear set; the insertion rod passes through the through hole provided on the friction throw block for fixing.

[0008] The specific technical solution is that when the aluminum tube's speed continues to increase under external influence, the centrifugal force generated by the friction block gradually increases after the speed increase gear set drives the friction block to rotate. When the centrifugal force is sufficient to overcome the elastic force of the block's elastic ring acting on the friction block, the friction block opens, and the rubber strip on its surface contacts the inner wall of the friction cylinder outside, generating frictional resistance.

[0009] The friction block is connected to the friction block shaft via a through-hole. A positioning rod is fixedly connected to the end of the block's elastic ring near the friction block, which is inserted into different groups of through-holes to ensure the stable movement of the friction block. The frictional resistance slows down and prevents the reducer from accelerating further, thereby preventing the starting wheel from accelerating further, offsetting some of the spring's torsional force and ultimately reducing the speed of the aluminum tube.

[0010] As the speed of the aluminum tube decreases, the power input from the starting wheel is accelerated by the speed-increasing gear set, causing the speed of the friction block to decrease accordingly. When the centrifugal force generated by the friction block is not enough to overcome the elastic force of the block's elastic ring, the friction block is reset under the action of the block's elastic ring and separates from the inner wall of the friction cylinder. At this time, there is no resistance to prevent the spring force from increasing the speed of the aluminum tube, and the speed of the aluminum tube will increase. When the speed of the aluminum tube increases to a certain level, the centrifugal force generated by the friction block is sufficient to overcome the elastic force of the block's elastic ring. The friction block is opened again and contacts the inner wall of the friction cylinder to generate friction resistance, repeating the above-mentioned deceleration process. This process repeats itself over and over again, and the speed of the aluminum tube is controlled to fluctuate within a certain range, maintaining a relatively uniform rotation speed, thereby achieving stable control of the operating speed of equipment related to the aluminum tube.

[0011] As a further optimization solution of the present invention, the speed-increasing gear set is composed of a first-stage speed-increasing gear set and a second-stage speed-increasing gear set that are meshed in sequence, which plays a role in speed increase.

[0012] As a further optimization of the present invention, a through rod extends through the inner ring of the one-way ratchet. A ratchet ring is fixedly mounted on the outer side of the first gear of the speed-increasing gear set. The ratchet ring mates with the one-way ratchet, and the ratchet teeth engage with each other. The through rod, fixedly connected to the first gear of the speed-increasing gear set, extends through the inner ring of the one-way ratchet. This structural design ensures stable power transmission. After the speed is increased by the speed-increasing gear set, the input speed of the aluminum tube is increased.

[0013] As a further optimization scheme of the present invention, the latching teeth of the one-way ratchet are an inclined trapezoidal structure, and the inclined surface of the latching teeth is set at an acute angle to the rotation direction of the one-way ratchet, so that during one-way transmission, the latching teeth can engage with the ratchet ring on the first gear of the speed-increasing gear set.

[0014] As a further optimization solution of the present invention, rubber strips are installed on the surface of the friction block. There are multiple groups of rubber strips, and the rubber strips are installed in a surrounding shape on the surface of the friction block.

[0015] As a further optimization scheme of the present invention, four groups of through holes are installed relatively, the insertion rods are inserted into two groups of through holes, and the positioning rods on the elastic ring of the swing block are inserted into the other two groups of through holes.

[0016] As a further optimization of the present invention, the top flat surface of the secondary gear of the speed-increasing gear set is connected to a gear shaft connecting plate. A friction block shaft, connected to the surface of the gear shaft connecting plate, rotates as the secondary gear rotates. A friction block is sleeved on the friction block shaft, and multiple sets of surrounding rubber strips are mounted on the surface of the friction block to increase friction.

[0017] As a further optimization scheme of the present invention, the surface of the friction block is connected to a block elastic ring, and a friction cylinder is provided on the outside of the friction block; the block elastic ring is fixedly connected to a positioning rod at one end close to the friction block, and four groups of through holes are provided, which are equidistantly opened on the surface of the friction block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention achieves dynamic control of the aluminum tube's rotational speed through the coordination of a speed-increasing gear set and a centrifugal friction reduction mechanism. When the tube's speed increases, the friction block opens due to centrifugal force overcoming the elastic force of the elastic ring. The rubber strip on its surface contacts the inner wall of the friction cylinder, generating frictional resistance and rapidly slowing the speed. When the speed drops to a point where the centrifugal force is insufficient, the block resets, and the speed increases again. This cycle stabilizes the tube's speed within a reasonable range, effectively solving the slow braking response problem of traditional retarders and achieving rapid response and stable control of the equipment's operating speed.

[0020] 2. The present invention adopts an inclined trapezoidal tooth structure through the one-way ratchet, and the inclined surface of the tooth is set at an acute angle to the rotation direction, ensuring that it is tightly engaged with the ratchet ring on the first-stage gear of the speed-increasing gear set during one-way transmission, thereby ensuring stable power transmission, avoiding problems such as slippage and interruption that may occur during power transmission, improving the reliability and stability of the retarder in the power transmission link, and laying the foundation for the stable operation of the entire deceleration mechanism.

[0021] 3. The speed-increasing gear set of the present invention is composed of a first-stage gear and a second-stage gear meshing in sequence, which can effectively increase the input speed of the aluminum tube, amplify the speed change effect, and enable the friction block to reach the threshold value of the centrifugal force overcoming the elastic force of the elastic ring more quickly, thereby starting the friction deceleration process in advance, thereby improving the braking efficiency of the entire retarder, allowing the equipment to respond more promptly when deceleration is needed, and meeting the needs of rapid deceleration in emergency situations. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0023] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure of the upper middle part;

[0024] Figure 3 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of the lower middle part.

[0025] Description of main symbols:

[0026] 1. Starting wheel; 2. Aluminum tube; 21. Clamping teeth; 3. One-way ratchet; 4. Speed-increasing gear set; 5. First-stage gear of speed-increasing gear set; 51. Through rod; 52. Matching clamping teeth; 6. Second-stage gear of speed-increasing gear set; 7. Gear shaft connecting plate; 8. Friction throw block shaft; 81. Throw block shaft; 82. Insert rod; 9. Rubber strip; 10. Friction throw block; 101. Through hole; 11. Throw block elastic ring; 12. Friction cylinder. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Example 1:

[0029] Please combine Figure 1-Figure 3 This embodiment proposes a retarder with a friction deceleration mechanism, including a starting wheel 1, an aluminum tube 2 is connected to the outside of the starting wheel 1, a one-way ratchet 3 is arranged inside the aluminum tube 2, and an increasing gear set 4 is connected to the outside of the one-way ratchet 3. The increasing gear set 4 includes a first-stage increasing gear 5 and a second-stage increasing gear 6 of the increasing gear set that are meshed in sequence; the increasing gear set 4 is composed of a first-stage increasing gear 5 and a second-stage increasing gear 6 of the increasing gear set that are meshed in sequence, which plays a role of increasing speed.

[0030] An aluminum tube latch 21 is provided on the inner wall of the aluminum tube 2, and an extended through rod 51 is fixedly connected to the first-stage gear 5 of the speed-increasing gear set. The surface of the first-stage gear 5 of the speed-increasing gear set is provided with matching latches 52, which match the aluminum tube latches 21 on the inner wall of the aluminum tube 2.

[0031] A through rod 51 extends through the inner ring of the one-way ratchet 3. A ratchet ring is fixedly mounted on the outer side of the first gear 5 of the speed-increasing gear set. The ratchet ring mates with the one-way ratchet 3, and the ratchet teeth engage with each other. The through rod 51, fixed to the first gear 5 of the speed-increasing gear set, extends through the inner ring of the one-way ratchet 3. This structural design ensures stable power transmission. After the speed is increased by the speed-increasing gear set 4, the input rotational speed of the aluminum tube 2 is increased.

[0032] It should be noted that the latching teeth of the one-way ratchet 3 are of an inclined trapezoidal structure, and the inclined surface of the latching teeth is set at an acute angle to the rotation direction of the one-way ratchet 3, so that during one-way transmission, the latching teeth can engage with the ratchet ring on the first-stage gear 5 of the speed-increasing gear set.

[0033] The top plane of the secondary gear 6 of the speed-increasing gear set is connected to the gear shaft connecting plate 7, the surface of the gear shaft connecting plate 7 is connected to the friction block shaft 8, the friction block 10 is sleeved on the friction block shaft 8, the friction block shaft 8 is fixedly installed with a block shaft 81 on the side close to the gear shaft connecting plate 7, the friction block shaft 8 is fixedly connected to the side close to the friction block 10 with an insertion rod 82, and a through hole 101 is opened on the surface of the friction block 10;

[0034] A through hole is provided at the center of the gear shaft connecting disk 7, and the swing block shaft 81 passes through the through hole on the surface of the gear shaft connecting disk 7 and is inserted into the second gear 6 of the speed increasing gear set; the insertion rod 82 passes through the through hole 101 provided on the friction swing block 10 for fixing.

[0035] The surface of the friction block 10 is mounted with multiple rubber strips 9, which are arranged in a circumferential pattern. The top plane of the secondary gear 6 of the speed-increasing gear set is connected to the gear shaft connecting plate 7. The friction block shaft 8 connected to the surface of the gear shaft connecting plate 7 rotates with the rotation of the secondary gear. The friction block 10 is sleeved on the friction block shaft 8, and multiple groups of rubber strips 9 are installed on the surface of the friction block 10 in a circumferential pattern to increase friction.

[0036] The surface of the friction block 10 is connected to a block elastic ring 11, and a friction cylinder 12 is provided on the outside of the friction block 10; the block elastic ring 11 is fixedly connected to a positioning rod at one end close to the friction block 10, and four groups of through holes 101 are provided, which are equidistantly opened on the surface of the friction block 10.

[0037] The four groups of through holes 101 are installed relatively to each other, the insertion rods 82 are inserted into two groups of through holes 101 , and the positioning rods on the swing block elastic ring 11 are inserted into the other two groups of through holes 101 .

[0038] Specifically, when the rotation speed of the aluminum tube 2 continues to increase under external influence, the centrifugal force generated by the friction block 10 gradually increases after the speed is increased by the speed-increasing gear set. When the centrifugal force is sufficient to overcome the elastic force of the block elastic ring 11 acting on the friction block 10, the friction block 10 opens, and the rubber strip 9 on its surface contacts the inner wall of the outer friction cylinder 12, generating friction resistance.

[0039] The friction block 10 is connected to the friction block shaft 8 through the through hole 101. The end of the block elastic ring 11 close to the friction block 10 is fixedly connected to a positioning rod, which is respectively inserted into different groups of through holes 101 to ensure the stable operation of the friction block 10. The generation of frictional resistance slows down and prevents the reducer from further increasing the speed, thereby preventing the starting wheel 1 from continuing to rotate at an increased speed, offsetting part of the torsional force of the spring, and ultimately reducing the rotation speed of the aluminum tube 2.

[0040] In a further specific technical solution, as the speed of the aluminum tube 2 decreases, the power input from the starting wheel 1 is accelerated by the speed-increasing gear set 4, thereby reducing the speed of the friction block 10. When the centrifugal force generated by the friction block 10 is insufficient to overcome the elastic force of the block elastic ring 11, the friction block 10 is reset by the action of the block elastic ring 11 and separates from the inner wall of the friction cylinder 12. At this time, without the resistance of the spring force to prevent the aluminum tube 2 from increasing its speed, the speed of the aluminum tube 2 will increase.

[0041] When the speed of the aluminum tube 2 increases to a certain level, the centrifugal force generated by the friction block 10 is sufficient to overcome the elastic force of the block's elastic ring 11, causing the friction block 10 to open again, contacting the inner wall of the friction cylinder 12 to generate friction resistance, and repeating the above deceleration process. This process repeats itself, and the speed of the aluminum tube 2 is controlled to fluctuate within a certain range, maintaining a relatively uniform rotation speed, thereby achieving stable control of the operating speed of the equipment related to the aluminum tube.

[0042] Overall work overview

[0043] This retarder with a friction reduction mechanism is designed to effectively control the rotational speed of an aluminum tube, ensuring stable and uniform operation of equipment associated with the tube 2, such as the fabric on the reel. Its operation involves a starting wheel 1 driving the tube 2. After the tube 2 is accelerated by a one-way ratchet 3 and a speed-increasing gear set 4, the centrifugal friction reduction mechanism adjusts the friction force based on the speed change.

[0044] Start-up and growth phase

[0045] When external power is applied to the starting wheel 1, it drives the connected aluminum tube 2 to begin rotating. A one-way ratchet 3 inside the tube 2 cooperates with the first gear 5 of the speed-increasing gear train. The teeth of the one-way ratchet 3 are inclined trapezoidal in shape, with the inclined surface set at an acute angle to the direction of rotation. During one-way transmission, the teeth tightly engage the ratchet ring on the first gear 5 of the speed-increasing gear train. At this point, the rotation of the tube 2 is transmitted to the speed-increasing gear train 4 via the one-way ratchet 3.

[0046] The speed-increasing gear set 4, consisting of a first-stage gear 5 and a second-stage gear 6 meshing in sequence, provides the speed increase. Aluminum tube 2 features aluminum tube latches 21 on the inner wall, which mate with matching latches 52 on the first-stage gear 5. Furthermore, a through-rod 51 fixed to the first-stage gear 5 extends through the inner ring of the one-way ratchet 3. This structural design ensures stable power transmission. After the speed increase is achieved by the speed-increasing gear set 4, the input rotational speed of the aluminum tube 2 is increased.

[0047] Friction deceleration stage

[0048] The top plane of the secondary gear 6 of the speed-increasing gear set is connected to the gear shaft connecting plate 7. The friction block shaft 8 connected to the surface of the gear shaft connecting plate 7 rotates with the rotation of the secondary gear. The friction block shaft 8 is sleeved with a friction block 10, and the surface of the friction block 10 is installed with multiple groups of surrounding rubber strips 9 to increase friction.

[0049] When the speed of the aluminum tube 2 continues to increase under external influence, after the speed is increased by the speed-increasing gear set, the centrifugal force generated by the rotation of the friction block 10 gradually increases. When the centrifugal force is sufficient to overcome the elastic force of the block elastic ring 11 acting on the friction block 10, the friction block 10 opens, and the rubber strip 9 on its surface contacts the inner wall of the outer friction cylinder 12, generating friction resistance.

[0050] The friction block 10 is connected to the friction block shaft 8 through the through hole 101. The end of the block elastic ring 11 close to the friction block 10 is fixedly connected to a positioning rod, which is respectively inserted into different groups of through holes 101 to ensure the stable operation of the friction block 10. The generation of frictional resistance slows down and prevents the reducer from further increasing the speed, thereby preventing the starting wheel 1 from continuing to rotate at an increased speed, offsetting part of the torsional force of the spring, and ultimately reducing the rotation speed of the aluminum tube 2.

[0051] Speed regulation cycle stage

[0052] As the speed of the aluminum tube 2 decreases, the power input from the starting wheel 1 is accelerated by the speed-increasing gear set 4, causing the speed of the friction block 10 to decrease accordingly. When the centrifugal force generated by the friction block 10 is insufficient to overcome the elastic force of the block elastic ring 11, the friction block 10 is reset under the action of the block elastic ring 11 and separates from the inner wall of the friction cylinder 12. At this time, there is no resistance to prevent the spring elastic force from increasing the speed of the aluminum tube 2, and the speed of the aluminum tube 2 will increase.

[0053] When the speed of the aluminum tube 2 increases to a certain level, the centrifugal force generated by the friction block 10 is sufficient to overcome the elastic force of the block's elastic ring 11, causing the friction block 10 to open again, contacting the inner wall of the friction cylinder 12 to generate friction resistance, and repeating the above deceleration process. This process repeats itself, and the speed of the aluminum tube 2 is controlled to fluctuate within a certain range, maintaining a relatively uniform rotation speed, thereby achieving stable control of the operating speed of the equipment related to the aluminum tube.

[0054] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A retarder with a friction deceleration mechanism, characterized in that: The invention comprises a starting wheel (1), an aluminum tube (2) is connected to the outside of the starting wheel (1), a one-way ratchet (3) is arranged inside the aluminum tube (2), a speed-increasing gear set (4) is connected to the outside of the one-way ratchet (3), and the speed-increasing gear set (4) comprises a first-stage speed-increasing gear set (5) and a second-stage speed-increasing gear set (6) which are meshed in sequence; The top plane of the secondary gear (6) of the speed-increasing gear set is connected to a gear shaft connecting disk (7), the surface of the gear shaft connecting disk (7) is connected to a friction block shaft (8), a friction block (10) is sleeved on the friction block shaft (8), a rubber strip (9) is installed on the surface of the friction block (10), a block elastic ring (11) is connected to the surface of the friction block (10), and a friction cylinder (12) is arranged on the outside of the friction block (10).

2. A retarder with a friction deceleration mechanism according to claim 1, characterized in that: The inner wall of the aluminum tube (2) is provided with an aluminum tube latching tooth (21); an extended through rod (51) is fixedly connected to the first-stage gear (5) of the speed-increasing gear set; and a matching latching tooth (52) is provided on the surface of the first-stage gear (5) of the speed-increasing gear set; the matching latching tooth (52) matches the aluminum tube latching tooth (21) on the inner wall of the aluminum tube (2).

3. A retarder with a friction deceleration mechanism according to claim 2, characterized in that: The penetration rod (51) penetrates the inner ring of the one-way ratchet (3), and a ratchet ring is fixedly installed on the outer side of the first-stage gear (5) of the speed-increasing gear set. The ratchet ring matches the one-way ratchet (3), and the ratchet teeth engage with each other.

4. A retarder with a friction deceleration mechanism according to claim 1, characterized in that: A swing block shaft (81) is fixedly mounted on one side of the friction block shaft (8) close to the gear shaft connecting plate (7), an insertion rod (82) is fixedly connected to one side of the friction block shaft (8) close to the friction block (10), and a through hole (101) is provided through the surface of the friction block (10); A through hole is provided at the center of the gear shaft connecting disk (7); the swing block shaft (81) passes through the through hole on the surface of the gear shaft connecting disk (7) and is inserted into the interior of the secondary gear (6) of the speed-increasing gear set; and the insertion rod (82) passes through the through hole (101) provided on the friction swing block (10) for fixing.

5. A retarder with a friction deceleration mechanism as claimed in claim 4, characterized in that: One end of the swing block elastic ring (11) close to the friction swing block (10) is fixedly connected to a positioning rod, and four groups of through holes (101) are provided, which are equidistantly opened on the surface of the friction swing block (10).

6. A retarder with a friction deceleration mechanism as claimed in claim 5, characterized in that: The four groups of through holes (101) are installed relative to each other, the insertion rods (82) are inserted into two groups of through holes (101), and the positioning rods on the swing block elastic ring (11) are inserted into the other two groups of through holes (101).

7. The retarder with a friction deceleration mechanism according to claim 1, characterized in that: The rubber strips (9) are provided in multiple groups, and the rubber strips (9) are installed in a surrounding shape on the surface of the friction block (10).

8. The retarder with a friction deceleration mechanism according to claim 1, characterized in that: The latching teeth of the one-way ratchet (3) are of an inclined trapezoidal structure, and the inclined surface of the latching teeth is arranged at an acute angle to the rotation direction of the one-way ratchet (3), so that during one-way transmission, the latching teeth can engage with the ratchet ring on the first-stage gear (5) of the speed-increasing gear set.

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