Automatic compensation device for extension amount of transmission belt

Abstract

The invention relates to the technical field of belt tensioning, in particular to a transmission belt extension amount automatic compensation device which comprises a fixing seat, a toothed belt is arranged above the fixing seat, two limiting wheels are arranged on the toothed belt in a sliding contact mode, and a belt automatic compensation mechanism is fixedly connected to the fixing seat. A position changing frame is fixedly connected to the fixing seat, a tooth groove processing seat is arranged on the position changing frame in a sliding fit mode, a tooth groove processing mechanism is arranged in the tooth groove processing seat in a sliding fit mode, and a transmission mechanism is arranged on one side of the tooth groove processing seat in a sliding fit mode. The compensation gear can be evenly and stably meshed with the tooth groove, it is guaranteed that the tooth-shaped belt is always kept within a reasonable tensioning range under different working conditions, meanwhile, particulate matter in the tooth groove of the tooth-shaped belt can be treated through the tooth groove treatment mechanism, the overall performance of the tooth-shaped belt transmission system can be improved, and the service life of the tooth-shaped belt is prolonged. And faults caused by accumulation of particulate matters or non-uniform tensile force are reduced.

Description

Technical Field

[0001] This invention relates to the field of belt tensioning technology, and in particular to an automatic compensation device for the extension of a transmission belt. Background Technology

[0002] Automatic belt extension compensation refers to the automatic adjustment of belt tension and length in belt drive systems as the belt stretches or slacks during operation, maintaining the stability and efficiency of the transmission system. This technology is particularly suitable for toothed belts, flat belts, V-belts, and other belt drive systems, and is widely used in mechanical equipment to ensure that belt drives maintain good working condition under long-term operation and load variations.

[0003] In the production process of new energy vehicles, lifting platforms are used for lifting and lowering. The stability of the drive belt in these platforms directly affects their safety and operational efficiency. Because lifting platforms often bear significant loads during operation, and frequent lifting and lowering movements can cause the drive belt to stretch or loosen, introducing automatic compensation technology can effectively reduce the safety hazards caused by belt loosening and improve the stability and service life of the lifting platform.

[0004] The prior art publication CN111120599A discloses an adjustable belt self-tensioning device. By employing lower and upper guide rods to guide and limit the tensioning components, it improves the positional accuracy of the tensioning pulley relative to the belt while ensuring structural rigidity and stability. This contributes to smooth belt operation and extends belt life. When the belt slacks, the tensioning pulley moves downwards under the weight of the tensioning components, continuing to press on the belt and tension it. Simultaneously, the spring extends to automatically compensate for the belt slack and pushes the tensioning components downwards, ensuring the belt tension remains within a reasonable range. The automatic tension adjustment process is continuous and smooth, contributing to improved belt operation stability and reliability.

[0005] Existing technology achieves tension compensation for flat belts. However, when compensating for tension of toothed belts in elevators, this technology lacks a structure adapted to the shape of the toothed belt. During tension compensation, the tensioning wheel cannot precisely match the tooth grooves, resulting in uneven tension and affecting the service life of the toothed belt. Furthermore, during use, particles accumulate in the tooth grooves. Because existing technology does not readily address the internal wall of the tooth grooves automatically, these particles increase friction during automatic tension compensation, further affecting the tension distribution and causing the tension to be either too high or too low, failing to maintain a reasonable range.

[0006] In summary, the existing technology lacks a technology that employs an automatic maintenance and tension compensation structure adapted to toothed belts. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of the prior art by providing an automatic compensation device for the extension of a transmission belt.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: an automatic compensation device for the extension of a transmission belt, comprising a fixed base, a toothed belt disposed above the fixed base, two limiting wheels slidably contacting the toothed belt, an automatic belt compensation mechanism fixedly connected to the fixed base, a shifting frame fixedly connected to the fixed base, a tooth groove processing seat slidably fitted on the shifting frame, a tooth groove processing mechanism slidably fitted inside the tooth groove processing seat, and a transmission mechanism slidably fitted on one side of the tooth groove processing seat.

[0009] Preferably, the fixing seat is provided with a guide groove.

[0010] Preferably, a bending rod is rotatably connected to one end of the limiting wheel, and a fixing frame is rotatably connected to the other end of both the bending rod and the limiting wheel. A slider is slidably fitted on one of the fixing frames, and a slotted frame is fixedly connected to the slider.

[0011] Preferably, the automatic belt compensation mechanism includes a compensation gear, which meshes with a toothed belt for transmission. Both ends of the compensation gear are rotatably connected to a movable seat, and an electric push rod is fixedly connected to the bottom of the movable seat. The other end of the electric push rod is fixedly connected to a fixed seat.

[0012] Preferably, a lead screw is rotatably connected through the transposition frame, and a motor is fixedly connected to one end of the lead screw, with the motor being fixedly connected to the transposition frame.

[0013] Preferably, a slide block is fixedly connected to the bottom end of the tooth groove treatment seat, and the slide block is threadedly connected to the lead screw. A cover is slidably fitted on the inner wall of the top opening of the tooth groove treatment seat. One end of the cover extends through the inner wall of the tooth groove treatment seat to the outside and is fixedly connected to a guide rod. The bottom end of the guide rod is slidably fitted with the inner wall of the guide groove. A receiving seat is fixedly connected to the bottom opening of the tooth groove treatment seat by bolts.

[0014] Preferably, the tooth groove treatment mechanism includes a sliding frame, which is slidably connected to the inner wall of the tooth groove treatment seat. A brush wheel shaft is rotatably connected to the sliding frame, and the bristles on the brush wheel shaft are slidably in contact with the inner wall of the tooth groove on the toothed belt. A driven wheel is fixedly connected to the middle of the brush wheel shaft, and a rotating sleeve is rotatably connected to the sliding frame. A driving wheel is fixedly connected to one end of the rotating sleeve, and the driving wheel and the driven wheel are meshed and driven for transmission.

[0015] Preferably, a rotating rod is slidably fitted on the inner wall of the rotating sleeve, the rotating rod is rotatably connected to the inner wall of the tooth groove treatment seat, a transmission wheel is fixedly connected to the outer end of the rotating rod, and an inclined groove plate is fixedly connected to the outer end of the sliding frame.

[0016] Preferably, the transmission mechanism includes a transmission rack that meshes with a transmission wheel. A sliding rod is fixedly connected to one end of the transmission rack, and the sliding rod is slidably engaged with the outer wall of the tooth groove treatment seat. A spring is fixedly connected to the upper end of the sliding rod, and the other end of the spring is fixedly connected to the outer wall of the tooth groove treatment seat. An inclined block is fixedly connected to the upper end of the transmission rack, and the inclined block is slidably in contact with the grooving frame. A pushing head is fixedly connected to one side of the transmission rack, and the pushing head is slidably engaged with the inner wall of the inclined groove plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By designing a compensating gear that precisely matches the toothed belt's tooth grooves, it can be ensured that the compensating gear can mesh evenly and stably with the tooth grooves when tensioning the toothed belt. The automatic adjustment function of the compensating gear can promptly compensate for the toothed belt's extension, solving the problem of different toothed belt extension caused by different forces, improving the stability and safety during the lifting process, and ensuring that the toothed belt always maintains a reasonable tension range under different working conditions. At the same time, by using a tooth groove treatment mechanism, particles in the toothed belt's tooth grooves can be treated. When automatically compensating for the toothed belt's extension, the accuracy and stability of the automatic compensation process can be significantly improved. This not only improves the overall performance of the toothed belt drive system and reduces failures caused by particle accumulation or uneven tension, but also extends the service life of the equipment and reduces maintenance costs. By setting up a shift frame, the position of the toothed belt treatment seat can be adjusted according to the direction of the toothed belt's movement. This allows the toothed belt treatment seat to be positioned upstream of the automatic belt compensation mechanism. Simultaneously, the guide groove on the fixed seat enables the cover on the toothed belt treatment seat to automatically open and close the opening. When automatically compensating for the toothed belt's extension, the position of the toothed belt treatment seat is adjusted by setting up the shift frame, allowing it to dynamically adjust according to the direction of the toothed belt's movement. Combined with the automatically opening and closing cover design, this not only ensures the timeliness and accuracy of toothed belt cleaning but also reduces manual intervention, extends equipment lifespan, and further improves the system's reliability and stability. By setting up a transmission mechanism, while the limiting wheel limits the toothed belt, the toothed belt can drive the limiting wheel to rotate. This allows the limiting wheel to automatically drive the tooth groove processing mechanism through the transmission mechanism to process the particles in the tooth grooves of the toothed belt. In the automatic compensation of the toothed belt extension, the efficient management and optimization of the toothed belt are achieved through automation and intelligent means, making the system operation more stable and reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic compensation device for the extension of a transmission belt according to the present invention. Figure 2 This is a partial cross-sectional view of the overall structure of an automatic compensation device for the extension of a transmission belt according to the present invention. Figure 3 This is a schematic diagram of the fixed base and shifting frame structure of an automatic compensation device for transmission belt extension according to the present invention. Figure 4 This is a schematic diagram of the limit wheel structure of an automatic compensation device for the extension of a transmission belt according to the present invention; Figure 5 This is a schematic diagram of the automatic belt compensation mechanism of an automatic compensation device for transmission belt extension according to the present invention. Figure 6 This is a schematic diagram of the tooth groove treatment seat structure of an automatic compensation device for transmission belt extension according to the present invention. Figure 7 This is a schematic diagram of the tooth groove processing mechanism of an automatic compensation device for transmission belt extension according to the present invention. Figure 8 This is a schematic diagram of the transmission mechanism of an automatic compensation device for the extension of a transmission belt according to the present invention.

[0019] The diagram shows: 1. Fixed base; 2. Toothed belt; 3. Limiting pulley; 4. Automatic belt compensation mechanism; 5. Shifting frame; 6. Gear groove treatment seat; 7. Gear groove treatment mechanism; 8. Transmission mechanism; 101. Guide groove; 301. Bending rod; 302. Fixed frame; 303. Slider; 304. Slotting frame; 401. Compensating gear; 402. Moving base; 403. Electric actuator; 501. Lead screw; 50 2. Motor; 601. Slide; 602. Cover; 603. Guide rod; 604. Receiving seat; 701. Sliding frame; 702. Brush wheel shaft; 703. Driven wheel; 704. Rotating sleeve; 705. Driving wheel; 706. Rotating rod; 707. Transmission wheel; 708. Inclined groove plate; 801. Transmission rack; 802. Sliding rod; 803. Spring; 804. Inclined block; 805. Push head. Detailed Implementation

[0020] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0021] like Figures 1-8 An automatic compensation device for the extension of a transmission belt is shown, comprising a fixed base 1, a toothed belt 2 disposed above the fixed base 1, two limit wheels 3 slidably contacting the toothed belt 2, an automatic belt compensation mechanism 4 fixedly connected to the fixed base 1, a shifting frame 5 fixedly connected to the fixed base 1, a tooth groove processing seat 6 slidably fitted on the shifting frame 5, a tooth groove processing mechanism 7 slidably fitted inside the tooth groove processing seat 6, and a transmission mechanism 8 slidably fitted on one side of the tooth groove processing seat 6.

[0022] like Figure 3 As shown, a guide groove 101 is provided on the fixed base 1. The guide groove 101 has a bent structure in the middle.

[0023] like Figure 4 As shown, a bending rod 301 is rotatably connected to one end of the limiting wheel 3. A fixed frame 302 is rotatably connected to the other end of both the bending rod 301 and the limiting wheel 3. A slider 303 is slidably fitted onto one of the fixed frames 302, and a slotted frame 304 is fixedly connected to the slider 303. The inclined block 804 moves to the lower side of the slotted frame 304. When the toothed belt 2 rotates, it drives the limiting wheel 3, which is in frictional contact, to rotate. The limiting wheel 3 then drives the connected bending rod 301 to rotate. At this time, the bending rod 301 drives the slotted frame 304 connected to the slider 303 to move up and down.

[0024] like Figure 5 As shown, the automatic belt compensation mechanism 4 includes a compensation gear 401, which meshes with the toothed belt 2 for transmission. Both ends of the compensation gear 401 are rotatably connected to a movable seat 402. An electric push rod 403 is fixedly connected to the bottom of the movable seat 402, and the other end of the electric push rod 403 is fixedly connected to the fixed seat 1.

[0025] like Figure 3 As shown, a lead screw 501 is rotatably connected through the transposition frame 5, and a motor 502 is fixedly connected to one end of the lead screw 501. The motor 502 is fixedly connected to the transposition frame 5.

[0026] like Figure 6As shown, a slide block 601 is fixedly connected to the bottom end of the toothed groove treatment seat 6. The slide block 601 is threadedly connected to the lead screw 501. A cover 602 is slidably fitted on the inner wall of the top opening of the toothed groove treatment seat 6. One end of the cover 602 extends through the inner wall of the toothed groove treatment seat 6 to the outside and is fixedly connected to a guide rod 603. The bottom end of the guide rod 603 is slidably fitted with the inner wall of the guide groove 101. A receiving seat 604 is fixedly connected to the bottom opening of the toothed groove treatment seat 6 by bolts. Under the action of the guide groove 101 on the fixed seat 1, the cover 602 connected to the guide rod 603 will automatically open.

[0027] like Figure 7 As shown, the tooth groove processing mechanism 7 includes a sliding frame 701, which is slidably connected to the inner wall of the tooth groove processing seat 6. A brush wheel shaft 702 is rotatably connected to the sliding frame 701. The bristles on the brush wheel shaft 702 are slidably in contact with the inner wall of the tooth groove on the toothed belt 2. A driven wheel 703 is fixedly connected to the middle of the brush wheel shaft 702. A rotating sleeve 704 is rotatably connected to the sliding frame 701. A driving wheel 705 is fixedly connected to one end of the rotating sleeve 704. The driving wheel 705 and the driven wheel 703 are meshed and driven for transmission.

[0028] A rotating rod 706 is slidably fitted onto the inner wall of the rotating sleeve 704. The rotating rod 706 is rotatably connected to the inner wall of the toothed treatment seat 6. A transmission wheel 707 is fixedly connected to the outer end of the rotating rod 706, and a sloping plate 708 is fixedly connected to the outer end of the sliding frame 701. The rotating rod 706 can drive the driving wheel 705 connected to the rotating sleeve 704 to rotate, so that the driving wheel 705 drives the brush wheel shaft 702 connected to the driven wheel 703 to rotate in both directions. At the same time, the transmission rack 801, which moves up and down, slides on the inner wall of the sloping plate 708 through the connected push head 805, thereby driving the sliding frame 701 connected to the sloping plate 708 to move back and forth.

[0029] By designing a compensating gear 401 that precisely matches the tooth groove of the toothed belt 2, it can be ensured that the compensating gear 401 can mesh with the tooth groove evenly and stably when tensioning the toothed belt 2. The automatic adjustment function of the compensating gear 401 can compensate for the extension of the toothed belt 2 in a timely manner, ensuring that the toothed belt 2 always maintains a reasonable tension range under different working conditions. At the same time, the tooth groove treatment mechanism 7 can treat the particles in the tooth groove of the toothed belt 2. When automatically compensating for the extension of the toothed belt 2, the accuracy and stability of the automatic compensation process can be significantly improved. This not only improves the overall performance of the toothed belt 2 transmission system and reduces failures caused by particle accumulation or uneven tension, but also extends the service life of the equipment and reduces maintenance costs.

[0030] like Figure 8As shown, the transmission mechanism 8 includes a transmission rack 801, which meshes with a transmission wheel 707. A sliding rod 802 is fixedly connected to one end of the transmission rack 801, and the sliding rod 802 slidably engages with the outer wall of the tooth groove treatment seat 6. A spring 803 is fixedly connected to the upper end of the sliding rod 802, and the other end of the spring 803 is also fixedly connected to the outer wall of the tooth groove treatment seat 6. A inclined block 804 is fixedly connected to the upper end of the transmission rack 801, and the inclined block 804 slidably contacts the slotting frame 304. A pushing head 805 is fixedly connected to one side of the transmission rack 801, and the pushing head 805 slidably engages with the inner wall of the inclined slot plate 708. The inclined block 804 can smoothly move to the lower side of the slotting frame 304. The slotted frame 304 can press down the inclined block 804, and then under the action of the spring 803, it can drive the sliding rod 802 to move up and down, thereby driving the connected transmission rack 801 to move up and down. At this time, the transmission rack 801 can drive the rotating rod 706 connected to the transmission wheel 707 to rotate in both directions.

[0031] Working principle: When it is necessary to automatically compensate for the extension of the toothed belt 2, the position of the toothed groove treatment seat 6 is first adjusted according to the movement direction of the toothed belt 2. The motor 502 drives the lead screw 501 to rotate, so that the lead screw 501 can drive the toothed groove treatment seat 6 connected to the slide 601 to move from the middle position of the fixed seat 1 to both sides. At this time, under the action of the guide groove 101 on the fixed seat 1, the cover 602 connected to the guide rod 603 will automatically open, so that the top opening of the toothed groove treatment seat 6 can be fitted onto the toothed belt 2. Then the inclined block 804 will move to the lower side of the slotted frame 304. When the toothed belt 2 rotates, it will drive the friction contact limit wheel 3 to rotate. Then the limit wheel 3 will drive the connected bending rod 301 to rotate. At this time, the bending rod 301 will drive the slotted frame 304 connected to the slider 303 to move up and down. At this time, the slotting frame 304 can press down the inclined block 804, and then under the action of the spring 803, it can drive the sliding rod 802 to move up and down, thereby driving the connected transmission rack 801 to move up and down. At this time, the transmission rack 801 can drive the rotating rod 706 connected to the transmission wheel 707 to rotate in both directions. Then, the rotating rod 706 can drive the driving wheel 705 connected to the rotating sleeve 704 to rotate, so that the driving wheel 705 drives the brush wheel shaft 702 connected to the driven wheel 703 to rotate in both directions. At the same time, the transmission rack 801 that moves up and down will slide on the inner wall of the inclined plate 708 through the connected push head 805, thereby driving the sliding frame 701 connected to the inclined plate 708 to move back and forth, so that the self-rotating brush wheel shaft 702 moves back and forth to clean the particles in the tooth groove of the toothed belt 2. Then, based on the compensation data of the toothed belt 2 detected, the electric push rod 403 drives the compensation gear 401 on the moving seat 402 to automatically compensate and tension the toothed belt 2.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An automatic compensation device for the extension of a transmission belt, comprising a fixed base (1), characterized in that: A toothed belt (2) is provided above the fixed seat (1). Two limit wheels (3) are slidably contacted on the toothed belt (2). An automatic belt compensation mechanism (4) is fixedly connected to the fixed seat (1). A shift frame (5) is fixedly connected to the fixed seat (1). A tooth groove treatment seat (6) is slidably fitted on the shift frame (5). A tooth groove treatment mechanism (7) is slidably fitted inside the tooth groove treatment seat (6). A transmission mechanism (8) is slidably fitted on one side of the tooth groove treatment seat (6).

2. The automatic compensation device for the extension of a transmission belt according to claim 1, characterized in that: The fixed base (1) is provided with a guide groove (101).

3. The automatic compensation device for the extension of a transmission belt according to claim 1, characterized in that: One end of the limiting wheel (3) is rotatably connected to a bending rod (301), and the other end of the bending rod (301) and the limiting wheel (3) are rotatably connected to a fixing frame (302). A slider (303) is slidably fitted on one of the fixing frames (302), and a slotted frame (304) is fixedly connected on the slider (303).

4. The automatic compensation device for the extension of a transmission belt according to claim 1, characterized in that: The automatic belt compensation mechanism (4) includes a compensation gear (401), which meshes with the toothed belt (2) for transmission. Both ends of the compensation gear (401) are rotatably connected to a movable seat (402), and the bottom of the movable seat (402) is fixedly connected to an electric push rod (403). The other end of the electric push rod (403) is fixedly connected to a fixed seat (1).

5. The automatic compensation device for the extension of a transmission belt according to claim 2, characterized in that: A lead screw (501) is rotatably connected through the transposition frame (5), and a motor (502) is fixedly connected to one end of the lead screw (501). The motor (502) is fixedly connected to the transposition frame (5).

6. The automatic compensation device for the extension of a transmission belt according to claim 5, characterized in that: The toothed groove treatment seat (6) is fixedly connected to a slide (601) at its bottom end. The slide (601) is threadedly connected to a lead screw (501). A cover (602) is slidably fitted on the inner wall of the top opening of the toothed groove treatment seat (6). One end of the cover (602) extends through the inner wall of the toothed groove treatment seat (6) to the outside and is fixedly connected to a guide rod (603). The bottom end of the guide rod (603) is slidably fitted to the inner wall of the guide groove (101). A receiving seat (604) is fixedly connected to the bottom opening of the toothed groove treatment seat (6) by bolts.

7. The automatic compensation device for the extension of a transmission belt according to claim 3, characterized in that: The tooth groove processing mechanism (7) includes a sliding frame (701), which is slidably connected to the inner wall of the tooth groove processing seat (6). A brush wheel shaft (702) is rotatably connected to the sliding frame (701). The bristles on the brush wheel shaft (702) are slidably in contact with the inner wall of the tooth groove on the toothed belt (2). A driven wheel (703) is fixedly connected to the middle of the brush wheel shaft (702). A rotating sleeve (704) is rotatably connected to the sliding frame (701). A driving wheel (705) is fixedly connected to one end of the rotating sleeve (704). The driving wheel (705) and the driven wheel (703) are meshed and driven.

8. The automatic compensation device for the extension of a transmission belt according to claim 7, characterized in that: The inner wall of the rotating sleeve (704) is slidably fitted with a rotating rod (706), which is rotatably connected to the inner wall of the tooth groove treatment seat (6). The outer end of the rotating rod (706) is fixedly connected with a transmission wheel (707), and the outer end of the sliding frame (701) is fixedly connected with a sloping groove plate (708).

9. An automatic compensation device for the extension of a transmission belt according to claim 8, characterized in that: The transmission mechanism (8) includes a transmission rack (801), which meshes with a transmission wheel (707). A sliding rod (802) is fixedly connected to one end of the transmission rack (801), and the sliding rod (802) is slidably engaged with the outer wall of the tooth groove treatment seat (6). A spring (803) is fixedly connected to the upper end of the sliding rod (802), and the other end of the spring (803) is fixedly connected to the outer wall of the tooth groove treatment seat (6). An inclined block (804) is fixedly connected to the upper end of the transmission rack (801), and the inclined block (804) is slidably contacted with the slotting frame (304). A push head (805) is fixedly connected to one side of the transmission rack (801), and the push head (805) is slidably engaged with the inner wall of the inclined groove plate (708).

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