Gear tooth row rotating device

Abstract

The utility model relates to mechanical drive technical field especially relates to a compact structure, transmission stable and wear -resisting gear teeth row rotating device, including casing, linear drive mechanism, tooth row, rotating shaft, wear -resistant seat, two first bearings and two second bearings, the casing has the first chamber and the second chamber that intercommunication, the wear -resistant block is located the bottom of first chamber, the recessed groove that is used for accommodating the grease and dust is arranged to the upper surface of wear -resistant block and along its length direction, tooth row is slidably arranged on wear -resistant block, the upper surface of tooth row has the first tooth that is in the row shape distribution, linear drive mechanism is located the outside of casing, and the output end of linear drive mechanism is arranged on tooth row through two first bearings, the rotating shaft rotatably is arranged on the casing through second bearing, and is distributed at the second chamber, the distribution direction of the central axis of rotating shaft is perpendicular distribution with the orthographic projection of the movement direction of tooth row.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a gear rack rotation device. Background Technology

[0002] In the field of mechanical transmission, gear transmission devices, as core components for power transmission and motion conversion, are widely used in industrial equipment, automated production lines, transportation vehicles, and robots. Their core function is to convert rotational motion into a target speed, torque, or direction output through gear meshing. Conventional gear transmission devices often employ multi-stage direct gear meshing (such as cylindrical gears, bevel gears, or planetary gear sets), and their transmission accuracy is highly dependent on gear machining accuracy and installation clearance control. However, due to manufacturing tolerances, thermal deformation, and long-term wear, minute gaps inevitably exist between gear teeth, leading to backlash during transmission. This defect is particularly prominent in scenarios requiring high-precision positioning (such as CNC machine tools), manifesting as motion lag, increased repeatability errors, and even system vibration, reducing equipment lifespan.

[0003] To address gear backlash issues, some technical solutions employ chain or belt drives instead of direct gear meshing (such as chain drives and synchronous belt drives). While these structures can eliminate backlash through flexible connections, the friction surfaces between chain links and sprockets, and between belts and pulleys, are prone to wear, requiring regular replacement of vulnerable parts and resulting in high maintenance costs. Chain elongation or belt slippage can cause fluctuations in the transmission ratio, affecting output accuracy. Under high torque conditions, chains are prone to skipping teeth or breaking, while belts may fail due to slippage, failing to meet the demands of heavy-duty industrial equipment. Summary of the Invention

[0004] Therefore, in view of the above problems, this utility model provides a gear rack rotation device with a compact structure, stable transmission and wear resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A gear rack rotation device includes a housing, a linear drive mechanism, a gear rack, a rotating shaft, a wear-resistant block, two first bearings, and two second bearings. The housing has a first chamber and a second chamber that are interconnected. The wear-resistant block is located at the bottom of the first chamber. The upper surface of the wear-resistant block is recessed along its length to accommodate grease and dust. The gear rack is slidably mounted on the wear-resistant block. The upper surface of the gear rack has first teeth arranged in a row. The linear drive mechanism is located outside the housing, and its output end is mounted on the gear rack via the two first bearings. The rotating shaft is rotatably mounted on the housing via the second bearings and is located in the second chamber. The distribution direction of the central axis of the rotating shaft is perpendicular to the orthographic projection of the direction of movement of the gear rack. The rotating shaft, located in the second chamber, has second teeth surrounding it, and the first teeth mesh with the second teeth.

[0006] Furthermore, the groove includes several groove units arranged in a row and interconnected, each groove unit having a rhomboid structure, and each groove unit having two spaced-apart support protrusions protruding from it.

[0007] Furthermore, the groove unit has mounting holes that communicate with the groove at both ends of its lateral direction.

[0008] Furthermore, the housing includes a bottom plate, a top plate, a front side plate, a rear side plate, a left side plate, a right side plate, and an annular housing. The front side plate and the rear side plate are respectively located on the front and rear sides of the bottom plate, and the left side plate and the right side plate are respectively located on the left and right sides of the bottom plate. The periphery of the top plate is connected to the front side plate, the rear side plate, the left side plate, and the right side plate. The front side plate, the rear side plate, and the top plate are provided with clearance grooves for the annular housing to be inserted.

[0009] Furthermore, the annular housing is provided with heat dissipation holes.

[0010] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: This gear rack rotation device integrates components such as a linear drive mechanism, a gear rack, and a rotating shaft into a housing. Through a reasonable layout design, it achieves the conversion between linear motion and rotational motion within a limited space. Compared with traditional multi-stage gear transmission devices, it greatly saves installation space and facilitates integration into various equipment. Furthermore, by using the meshing method between the gear rack and the second tooth on the rotating shaft, it avoids the problem of small gaps between teeth caused by manufacturing tolerances, thermal deformation, and long-term wear in conventional gear transmissions. This effectively eliminates backlash, reduces motion lag and repetitive positioning errors, and makes the transmission process smoother. It is especially suitable for scenarios requiring high-precision positioning, improving the processing accuracy and stability of the equipment. A wear-resistant block is provided, on which the gear rack can slide. The wear-resistant block can withstand the friction generated during the sliding of the gear rack, reducing wear caused by direct contact between the gear rack and the housing, extending the service life of the device, and reducing maintenance costs. Simultaneously, the grooves on the upper surface of the wear-resistant block can accommodate lubricating grease, further reducing friction and improving wear resistance. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention in a frontal view; Figure 2 This is a three-dimensional structural diagram of an embodiment of the present invention in a rear view. Figure 3 This is a three-dimensional structural diagram of an embodiment of the present invention omitting the rear side panel and top panel; Figure 4 This is a first-view three-dimensional structural diagram of the embodiment of the present invention, omitting the rear side plate, top plate, and annular shell. Figure 5 This is a two-dimensional structural diagram from a second perspective of the embodiment of the present invention, omitting the rear side plate, top plate, and annular shell. Detailed Implementation

[0012] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0013] The embodiment of this utility model is as follows: refer to Figures 1 to 5As shown, a gear rack rotating device includes a housing 1, a linear drive mechanism 2, a gear rack 3, a rotating shaft 4, a wear-resistant block 5, two first bearings 6, and two second bearings 7. The housing 1 has a first chamber 101 and a second chamber 102 that are interconnected. The wear-resistant block 5 is disposed at the bottom of the first chamber 101, and the upper surface of the wear-resistant block 5 is recessed along its length with a groove 8 for accommodating grease and dust. The gear rack 3 is slidably disposed on the wear-resistant block 5, and the upper surface of the gear rack 3 has first teeth 31 arranged in a row. The linear drive mechanism 2 is located on the outside of the housing 1, and the output end of the linear drive mechanism 2 is mounted on the gear rack 3 via two first bearings 6. The rotating shaft 4 is rotatably mounted on the housing via a second bearing 7 and is distributed in the second chamber 102. The distribution direction of the central axis of the rotating shaft 4 is perpendicular to the orthographic projection of the movement direction of the gear rack 3. The rotating shaft 4 is provided with a second tooth 41 surrounding the rotating shaft 4 and located in the second chamber 102. The first tooth 31 meshes with the second tooth 41. The linear drive mechanism 2 is a drive cylinder.

[0014] This gear rack rotation device integrates components such as a linear drive mechanism 2, a gear rack 3, and a rotating shaft 4 within a housing. Through a rational layout design, it achieves the conversion between linear and rotary motion within a limited space. Compared to traditional multi-stage gear transmission devices, it significantly saves installation space and facilitates integration into various equipment. Furthermore, the meshing method between the gear rack 3 and the second tooth 41 on the rotating shaft 4 avoids the micro-backlash problems caused by manufacturing tolerances, thermal deformation, and long-term wear in conventional gear transmissions. This effectively eliminates backlash, reduces motion lag and repetitive positioning errors, and makes the transmission process smoother. It is particularly suitable for scenarios requiring high-precision positioning, improving the processing accuracy and stability of the equipment. A wear-resistant block 5 is provided, on which the gear rack 3 is slidably mounted. The wear-resistant block 5 can withstand the friction generated during the sliding of the gear rack 3, reducing wear caused by direct contact between the gear rack 3 and the housing 1, extending the service life of the device, and reducing maintenance costs. Simultaneously, the groove 8 on the upper surface of the wear-resistant block 5 can accommodate lubricating grease, further reducing friction and improving wear resistance.

[0015] In this embodiment, the groove 8 includes several groove units 81 arranged in rows and interconnected. Each groove unit 81 has a rhomboid structure. Two spaced-apart support protrusions 82 are provided inside the groove unit 81, which allows the grease to be distributed more evenly in the groove 8, better lubricating the contact surface between the gear rack 3 and the wear-resistant block 5 and reducing wear. At the same time, the interconnected groove structure of the groove 8 facilitates the flow of dust and other impurities in the groove 8, making it easy to collect and clean them, preventing the accumulation of impurities from affecting the normal operation of the device. The two spaced-apart support protrusions 82 in the groove unit 81 can provide additional support points for the gear rack 3, making the gear rack 3 more stable during sliding, reducing the shaking caused by uneven force, and further improving the accuracy and stability of the transmission.

[0016] Furthermore, the groove unit 81 has mounting holes 9 at both ends of its lateral side that communicate with the groove 8. The mounting holes 9 facilitate the installation and removal of the wear-resistant block 5. When it is necessary to replace the wear-resistant block 5 or perform maintenance, tools can be used through the mounting holes 9, which improves maintenance efficiency and reduces maintenance difficulty. At the same time, the connection between the mounting holes 9 and the groove 8 also facilitates the addition or adjustment of grease in the groove 8 during the installation process.

[0017] Furthermore, the housing 1 includes a bottom plate 11, a top plate 12, a front side plate 13, a rear side plate 14, a left side plate 15, a right side plate 16, and an annular housing 17. The front side plate 13 and the rear side plate 14 are respectively located on the front and rear sides of the bottom plate 11. The left side plate 15 and the right side plate 16 are respectively located on the left and right sides of the bottom plate 11. The periphery of the top plate 12 is connected to the front side plate 13, the rear side plate 14, the left side plate 15, and the right side plate 16. The front side plate 13, the rear side plate 14, and the top plate 12 have recessed grooves 18 for the annular housing 17 to be inserted, allowing each component to be manufactured and processed independently. This improves production efficiency. During assembly, the side plates, top plate 12, and bottom plate 11 are connected sequentially, and the annular shell 17 is inserted into the clearance groove 18 to complete the assembly of the shell 1. The assembly process is simple and convenient, reducing assembly costs. Furthermore, the interconnection of the side plates, top plate 12, and bottom plate 11 forms a closed shell structure, which can effectively withstand various forces generated during the operation of the device, enhancing the structural strength of the entire device and ensuring its stability and reliability. At the same time, the insertion design of the annular shell 17 further improves the overall rigidity of the shell 1 and reduces deformation caused by external forces.

[0018] In this embodiment, the annular housing 17 is provided with heat dissipation holes 10. During the operation of the device, the meshing of components such as the gear rack 3 and the rotating shaft 4 will generate heat. The setting of heat dissipation holes 10 can increase air circulation, accelerate heat dissipation, reduce the internal temperature of the device, prevent the performance of components from deteriorating or being damaged due to excessive temperature, extend the service life of the device, and improve the reliability and stability of the device.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0022] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A gear rack rotation device, characterized in that: The device includes a housing, a linear drive mechanism, a gear rack, a rotating shaft, a wear-resistant block, two first bearings, and two second bearings. The housing has a first chamber and a second chamber that are interconnected. The wear-resistant block is located at the bottom of the first chamber, and its upper surface, along its length, has a groove for accommodating grease and dust. The gear rack is slidably mounted on the wear-resistant block, and its upper surface has first teeth arranged in a row. The linear drive mechanism is located outside the housing, and its output end is mounted on the gear rack via the two first bearings. The rotating shaft is rotatably mounted on the housing via the second bearings and is located in the second chamber. The distribution direction of the central axis of the rotating shaft is perpendicular to the orthographic projection of the movement direction of the gear rack. The rotating shaft, located within the second chamber, has second teeth that surround the rotating shaft, and the first teeth mesh with the second teeth.

2. The gear rack rotating device according to claim 1, characterized in that: The groove includes several groove units arranged in a row and interconnected. Each groove unit has a rhomboid structure and two spaced-apart support protrusions protruding from within the groove unit.

3. The gear rack rotating device according to claim 2, characterized in that: The groove unit has mounting holes that communicate with the groove at both ends of its lateral direction.

4. The gear rack rotating device according to any one of claims 1 to 3, characterized in that: The housing includes a bottom plate, a top plate, a front side plate, a rear side plate, a left side plate, a right side plate, and an annular housing. The front side plate and the rear side plate are respectively located on the front and rear sides of the bottom plate. The left side plate and the right side plate are respectively located on the left and right sides of the bottom plate. The periphery of the top plate is connected to the front side plate, the rear side plate, the left side plate, and the right side plate. The front side plate, the rear side plate, and the top plate are provided with clearance grooves for the annular housing to be inserted.

5. The gear rack rotating device according to claim 4, characterized in that: The annular shell is provided with heat dissipation holes.

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