Speed reducer with overload protection structure

Abstract

The utility model relates to the technical field of speed reducer discloses a speed reducer with overload protection structure, including speed reducer. The utility model discloses when the overload occurs, the torque that shearing pin bears exceeds threshold and breaks, and the debris produced by shearing pin breaks off and splashes to the surface of buffer board, at this moment, the buffer board drives the sliding rod to slide in the buffer spring of the protection box inner wall buffer board, and the kinetic energy of debris splashing is effectively absorbed through the buffer board and spring, avoids the secondary damage of equipment splashing of debris everywhere, reduces the maintenance scope, reduces maintenance cost and downtime, owing to the kinetic energy output interruption caused by shearing pin breakage, the internal core component of protection speed reducer is damaged due to overload, the service life of speed reducer is remarkably prolonged, the equipment failure rate is reduced, personnel rotate through knob drive two -way threaded rod, two -way threaded rod and fixed block carry out threaded connection, make fixed block drive sliding block to slide in the sliding slot outer wall through protection box, and personnel can clean the internal debris.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a speed reducer with an overload protection structure. Background Technology

[0002] A speed reducer is a core device in an industrial transmission system used to adjust power output. In layman's terms, it is a "power transmission device." It receives high-speed, low-torque input from power sources such as motors and internal combustion engines, and after conversion by an internal transmission mechanism, outputs low-speed, high-torque power to meet the speed and torque requirements of various machines. Its core value lies in solving the "matching problem" between the power source and the working machinery. Most power equipment is good at high-speed rotation but has relatively small output force, while many machines in actual work need to operate at low speeds but require greater force. The speed reducer is the key bridge connecting the two.

[0003] Existing overload protection devices for speed reducers use shear pins to kinetically connect the motor and the speed reducer. When the speed reducer is overloaded, the shear pins break, and the resulting debris can fly out, damaging internal gears and other components. These debris can easily directly impact the core internal components, causing scratches on the tooth surfaces. The flying debris expands the maintenance scope, significantly increasing unnecessary maintenance costs and downtime. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a speed reducer with an overload protection structure.

[0005] This utility model is achieved by the following technical solution: a speed reducer with an overload protection structure, including a speed reducer, a housing fixedly connected to the outer wall of the speed reducer, an overload protection component provided inside the housing, and an installation component provided inside the housing;

[0006] The overload protection component includes a slide groove, a slider slidably connected to the outer wall of the slide groove, a protective box fixedly connected to the top of the slider, a shear pin provided inside the protective box, a sliding rod rotatably connected to the inner wall of the protective box, a limit plate fixedly connected to the outer wall of the sliding rod, a spring sleeved on the outer wall of the sliding rod, a buffer plate fixedly connected to the end of the sliding rod away from the limit plate, a fixing block fixedly connected to the top of the protective box, a bidirectional threaded rod threadedly connected inside the fixing block, and a knob fixedly connected to the end of the bidirectional threaded rod away from the fixing block.

[0007] As a further improvement to the above solution, the groove is formed at the bottom of the inner wall of the housing, and the bidirectional threaded rod is rotatably connected inside the housing.

[0008] With the above technical solution, when an overload occurs, the shear pin breaks due to torque exceeding the threshold. At the moment of breakage, the debris generated by the shear pin splashes onto the surface of the buffer plate. At this time, the buffer plate drives the sliding rod to slide on the inner wall of the protective box, compressing the spring. The buffer plate and spring effectively absorb the kinetic energy of the splashing debris, preventing secondary damage to the equipment caused by debris flying everywhere, reducing the maintenance scope, maintenance costs, and downtime. Because the kinetic energy output is interrupted due to the breakage of the shear pin, the internal core components of the reducer are protected from damage due to overload, significantly extending the service life of the reducer and reducing the equipment failure rate. Personnel can rotate the bidirectional threaded rod by turning the knob. The bidirectional threaded rod is threadedly connected to the fixed block, causing the fixed block to slide on the outer wall of the slide groove through the protective box, allowing personnel to clean the debris inside.

[0009] As a further improvement to the above solution, the mounting assembly includes a fixing plate, which is fixedly connected to the outer wall of the housing, and a motor is fixedly connected to the top of the fixing plate.

[0010] As a further improvement to the above solution, a flange ring is fixedly connected to the outer wall of the motor output end, and a screw is slidably connected to the inner wall of the flange ring.

[0011] As a further improvement to the above solution, the screw is threadedly connected to a nut, and a flange ring is slidably connected to the outer wall of the screw, the flange ring being fixedly connected to the outer wall of the shear pin.

[0012] Through the above technical solution, the fixing plate supports the motor, and the flange ring at the motor output end is connected by a screw and nut, thereby connecting and fixing the flange rings together, ensuring stable kinetic energy output and making the connection more stable.

[0013] As a further improvement to the above solution, a temporary storage box is fixedly connected to the inner wall of the outer shell, and a sound insulation cotton board is fixedly connected to the inner wall of the outer shell.

[0014] As a further improvement to the above solution, the outer shell is hinged to a cover plate, and a handle is fixedly connected to the top of the cover plate.

[0015] Through the above technical solutions, the temporary storage box inside the outer shell can be used to store the shear pins for easy replacement later. The sound insulation cotton board reduces operating noise, and the cover and handle provide secondary protection for the inside of the outer shell, making the inside a sealed space and further reducing damage.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention utilizes a mechanism where, in the event of an overload, the shear pin breaks due to torque exceeding a threshold. The resulting debris from the shear pin splashes onto the surface of the buffer plate. At this moment, the buffer plate, along with a sliding rod, slides against the inner wall of the protective housing, compressing the spring. The buffer plate and spring effectively absorb the kinetic energy of the splashing debris, preventing secondary damage to the equipment. This reduces the scope of maintenance, lowers maintenance costs, and minimizes downtime. The breakage of the shear pin interrupts the kinetic energy output, protecting the core components of the reducer from overload damage, significantly extending the reducer's lifespan, and reducing equipment failure rates. Personnel can rotate a double-threaded rod via a knob. The double-threaded rod is threadedly connected to a fixed block, causing the fixed block to slide against the outer wall of the groove through the protective housing, allowing personnel to clean the debris inside.

[0018] This utility model supports the motor with a fixing plate, and the flange ring at the motor output end is connected to the flange ring by a screw and nut, thereby connecting and fixing the flange ring to the flange ring one, ensuring stable kinetic energy output and making the connection more stable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overload protection component of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation component structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the shear pin structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the sound insulation cotton board structure of this utility model.

[0024] Explanation of key symbols:

[0025] 1. Reducer; 2. Housing; 3. Overload protection assembly; 301. Slide rail; 302. Slider; 303. Protective box; 304. Shear pin; 305. Sliding rod; 306. Limiting plate; 307. Spring; 308. Buffer plate; 309. Fixing block; 310. Double-ended threaded rod; 311. Knob; 4. Mounting assembly; 401. Fixing plate; 402. Motor; 403. Flange ring; 404. Screw; 405. Nut; 406. Flange ring one; 5. Temporary storage box; 6. Sound insulation cotton board; 7. Cover plate; 8. Handle. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figure 1-5 This embodiment provides a speed reducer with an overload protection structure, including a speed reducer 1, a housing 2 fixedly connected to the outer wall of the speed reducer 1, an overload protection component 3 disposed inside the housing 2, and an installation component 4 disposed inside the housing 2.

[0029] The overload protection component 3 includes a slide 301, a slider 302 slidably connected to the outer wall of the slide 301, a protective box 303 fixedly connected to the top of the slider 302, a shear pin 304 provided inside the protective box 303, a sliding rod 305 rotatably connected to the inner wall of the protective box 303, a limit piece 306 fixedly connected to the outer wall of the sliding rod 305, a spring 307 sleeved on the outer wall of the sliding rod 305, a buffer plate 308 fixedly connected to the end of the sliding rod 305 away from the limit piece 306, a fixing block 309 fixedly connected to the top of the protective box 303, a bidirectional threaded rod 310 threadedly connected inside the fixing block 309, and a knob 311 fixedly connected to the end of the bidirectional threaded rod 310 away from the fixing block 309.

[0030] The slide groove 301 is formed at the bottom of the inner wall of the housing 2, and the bidirectional threaded rod 310 is rotatably connected inside the housing 2.

[0031] Mounting component 4 includes a fixing plate 401, which is fixedly connected to the outer wall of housing 2, and a motor 402 is fixedly connected to the top of fixing plate 401.

[0032] A flange ring 403 is fixedly connected to the outer wall of the output end of motor 402, and a screw 404 is slidably connected to the inner wall of flange ring 403.

[0033] The screw 404 is threadedly connected to a nut 405, and a flange ring 406 is slidably connected to the outer wall of the screw 404. The flange ring 406 is fixedly connected to the outer wall of the shear pin 304.

[0034] A temporary storage box 5 is fixedly connected to the inner wall of the outer shell 2, and a sound insulation cotton board 6 is fixedly connected to the inner wall of the outer shell 2.

[0035] The outer casing 2 is hinged to a cover plate 7, and a handle 8 is fixedly connected to the top of the cover plate 7.

[0036] The implementation principle of a speed reducer with an overload protection structure in this embodiment is as follows: A fixed plate 401 supports a motor 402. The flange ring 403 at the output end of the motor 402 is threadedly connected to a nut 405 via a screw 404, thereby connecting and fixing the flange ring 403 to flange ring 406. This ensures stable kinetic energy output and a more stable connection. By disassembling the nut 405 and screw 404, the shear pin 304 can be replaced. Flange ring 406 is fixed to the shear pin 304, thus... Power is transmitted to the shear pin 304, which then transmits the power to the reducer 1. During normal operation, the shear pin 304 stably transmits force within the protective housing 303, driving the reducer 1. The shear pin 304 can be customized to meet the user's maximum torque requirements. In case of overload, the shear pin 304 breaks when the torque exceeds the threshold. At the moment of breakage, debris generated by the shear pin 304 splashes onto the surface of the buffer plate 308. At this time, the buffer plate 308 causes the sliding rod 305 to slide within the protective housing 303. The buffer plate 308 compresses the spring 307, effectively absorbing the kinetic energy of flying debris and preventing secondary damage to the equipment caused by debris flying everywhere. This achieves dual protection of active buffering and physical interception, reducing the scope of maintenance, maintenance costs, and downtime. Due to the breakage of the shear pin 304, the kinetic energy output is interrupted, thus protecting the core components inside the reducer 1 from wear, deformation, or breakage due to excessive overload. This significantly extends the service life of the reducer 1 and reduces the equipment failure rate. Personnel can rotate the bidirectional threaded rod 310 by turning the knob 311. The bidirectional threaded rod 310 is threadedly connected to the fixed block 309, causing the fixed block 309 to drive the slider 302 to slide on the outer wall of the slide groove 301 through the protective box 303. At this time, personnel can clean the debris inside. The temporary storage box 5 inside the outer shell 2 can be used to store the shear pin 304 for easy replacement later. The sound insulation cotton board 6 reduces operating noise. The cover plate 7 and handle 8 provide secondary protection for the inside of the outer shell 2, making the inside a sealed space and further reducing injury.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A speed reducer with an overload protection structure, characterized by, Includes a speed reducer (1), the outer wall of which is fixedly connected to a housing (2), an overload protection component (3) is provided inside the housing (2), and an installation component (4) is provided inside the housing (2); The overload protection component (3) includes a slide groove (301), a slider (302) is slidably connected to the outer wall of the slide groove (301), a protective box (303) is fixedly connected to the top of the slider (302), a shear pin (304) is provided inside the protective box (303), a sliding rod (305) is rotatably connected to the inner wall of the protective box (303), a limit piece (306) is fixedly connected to the outer wall of the sliding rod (305), a spring (307) is sleeved on the outer wall of the sliding rod (305), a buffer plate (308) is fixedly connected to the end of the sliding rod (305) away from the limit piece (306), a fixing block (309) is fixedly connected to the top of the protective box (303), a bidirectional threaded rod (310) is threadedly connected inside the fixing block (309), and a knob (311) is fixedly connected to the end of the bidirectional threaded rod (310) away from the fixing block (309).

2. The speed reducer with an overload protection structure according to claim 1, characterized in that: The groove (301) is formed at the bottom of the inner wall of the outer shell (2), and the bidirectional threaded rod (310) is rotatably connected inside the outer shell (2).

3. The speed reducer with an overload protection structure according to claim 1, characterized in that: The mounting assembly (4) includes a fixing plate (401), which is fixedly connected to the outer wall of the housing (2), and a motor (402) is fixedly connected to the top of the fixing plate (401).

4. The speed reducer with an overload protection structure according to claim 3, characterized in that: A flange ring (403) is fixedly connected to the outer wall of the output end of the motor (402), and a screw (404) is slidably connected to the inner wall of the flange ring (403).

5. The speed reducer with an overload protection structure according to claim 4, characterized in that: The screw (404) is threadedly connected to a nut (405), and a flange ring (406) is slidably connected to the outer wall of the screw (404). The flange ring (406) is fixedly connected to the outer wall of the shear pin (304).

6. The speed reducer with an overload protection structure according to claim 1, characterized in that: A temporary storage box (5) is fixedly connected to the inner wall of the outer shell (2), and a sound insulation cotton board (6) is fixedly connected to the inner wall of the outer shell (2).

7. The speed reducer with an overload protection structure according to claim 6, characterized in that: The outer shell (2) is hinged to a cover plate (7), and a handle (8) is fixedly connected to the top of the cover plate (7).

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