Transmission gear precision meshing adjustment mechanism

Abstract

This utility model relates to the field of mechanical transmission equipment technology, and discloses a precise gear meshing adjustment mechanism, including a fixed bracket, an assembly base, a movable bracket, a pitch adjustment mechanism, and an axial adjustment mechanism. The fixed gear is mounted on the fixed bracket, the assembly base is located at the bottom of the fixed bracket, and the movable bracket is slidably mounted on the assembly base. The telescopic rod of the pitch adjustment mechanism connects the assembly base and the movable bracket, and is used to drive the movable bracket to slide to adjust the gear pitch. The axial adjustment mechanism includes a rotating push rod, a compression ring, and a bearing, with the rotating push rod threadedly connected to the movable bracket. This utility model achieves independent and precise control of the gear meshing state through bidirectional coordinated adjustment of pitch and axial direction, effectively solving the problems of high noise and rapid wear caused by installation errors in the prior art, and significantly improving transmission smoothness.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission equipment technology, and in particular to a transmission gear precision meshing adjustment mechanism. Background Technology

[0002] Gear transmission is a widely used power transmission method in mechanical equipment. The meshing accuracy between the fixed gear and the moving gear directly determines the smoothness of the operation and service life of the entire transmission system. In the actual assembly and debugging process, in order to ensure the best transmission effect, it is necessary not only to strictly control the center distance between the two gears, but also to ensure that the two gears are aligned in axial position to avoid uneven load or insufficient effective meshing area.

[0003] In existing technologies, common gear mounting structures employ fixed supports or rely solely on simple elongated holes and bolts to achieve coarse pitch movement. Traditional gear mounting structures suffer from the drawback of limited adjustment dimensions, typically only allowing for changes in gear pitch in a single direction, without the ability to make minute adjustments to the axial position of the gears. When gears become axially misaligned due to machining errors or installation deviations, operators find it difficult to quickly correct the misalignment using existing support structures. This results in the gears operating in a non-ideal meshing state for extended periods, leading to severe mechanical vibration, significant operating noise, and accelerated wear of gear components.

[0004] Therefore, this utility model proposes a transmission gear precise meshing adjustment mechanism to overcome the shortcomings of the prior art. Utility Model Content

[0005] In the existing technology, the transmission gear mounting structure can usually only adjust the spacing in one direction, making it difficult to simultaneously and independently adjust the center distance and axial position with precision. This results in problems such as poor gear meshing, high operating noise, and accelerated wear. The present invention aims to provide a transmission gear precision meshing adjustment mechanism with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a transmission gear precision meshing adjustment mechanism, including a fixed gear, a rotating shaft, a fixed bracket, a spacing adjustment mechanism, an assembly base, a movable bracket, an axial adjustment mechanism, and a movable gear.

[0007] The fixed gear is fixedly installed on the outer wall of the rotating shaft, the front end of the rotating shaft is rotatably connected to the rear side of the fixed bracket, the assembly base is located at the bottom of the fixed bracket, the movable bracket is slidably installed on the assembly base, the spacing adjustment mechanism is used to control the distance between the fixed gear and the movable gear, and the axial adjustment mechanism is used to control the axial alignment between the fixed gear and the movable gear.

[0008] Furthermore, the spacing adjustment mechanism, the axial adjustment mechanism, the movable bracket, and the assembly base are connected by a specific structure. Specifically, the spacing adjustment mechanism includes a telescopic rod located on the top right side of the assembly base, with its left output end fixedly connected to the movable bracket. The axial adjustment mechanism includes a rotating push rod, a knob, a pressing ring, a bearing, and a second rotating shaft. The rotating push rod is threaded to the front side of the movable bracket, the knob is fixedly connected to the front end of the rotating push rod, the pressing ring is fixedly connected to the rear end of the rotating push rod, and the rear edge of the pressing ring is fixed to the edge of the bearing. The inner wall of the bearing is rotatably engaged with the second rotating shaft, and the moving gear is fixed to the outer wall of the second rotating shaft. By rotating the knob, the rotating push rod is driven, causing the pressing ring to press the bearing to move, thereby driving the moving gear to move and adjust the axial alignment between the gears.

[0009] Preferably, the top of the assembly base has an inner groove that extends along the length of the assembly base, and a retaining plate is fixedly connected to the bottom rear side of the movable bracket. The retaining plate engages with the inner groove and restricts the movable bracket from detaching from the assembly base.

[0010] Preferably, the front side of the mounting base is provided with a sliding groove, and the bottom of the movable bracket is provided with a slider. The slider slides in the sliding groove, and the sliding groove is located below the inner groove and the two are arranged parallel to each other.

[0011] Preferably, the card plate and the slider cooperate to clamp the assembly base, thereby making the movable bracket stable in the vertical direction.

[0012] Preferably, a scale plate is provided on the front side of the mounting base, above the slide groove. The scale plate can display scales and is used to determine the distance between the fixed gear and the moving gear by observing the scale plate.

[0013] Preferably, the telescopic rod is configured to push the movable support to make slight movements in the front-to-back direction, and when the spacing is fixed, the telescopic rod plays a supporting role to prevent displacement.

[0014] Preferably, the rotating push rod passes through the front sidewall of the movable bracket, and the connection between the rotating push rod and the movable bracket is a threaded engagement, so that the rotation of the knob can be converted into the linear movement of the rotating push rod.

[0015] Preferably, the compression ring is configured to compress the bearing backward by the thrust of the rotating push rod, and the movement of the bearing drives the moving gear to move on the second rotating shaft, thereby adjusting the axial position of the moving gear relative to the fixed gear.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the technical problem that existing gear transmission devices usually cannot simultaneously meet the requirements of center distance fine adjustment and axial precise alignment through the coordinated design of the spacing adjustment mechanism and the axial adjustment mechanism. It achieves the ability to independently and precisely adjust the gear meshing state from two dimensions: radial distance and axial position, thereby significantly improving transmission smoothness and reducing operating noise and mechanical wear.

[0018] 2. This utility model solves the problem of uneven tooth surface contact caused by the inability to make fine adjustments to the axial position after the traditional gear is installed and fixed by setting an axial adjustment component consisting of a rotating push rod, a compression ring and a bearing inside the movable bracket. It achieves the effect of using the micro-feed characteristics of the threaded transmission to drive the movable gear to move smoothly along the axial direction and realize the effect of high alignment of the gear end face.

[0019] 3. This utility model solves the problem of decreased accuracy caused by tilting or shaking of the moving parts during adjustment by using an upper and lower locking guide structure with an inner groove and a sliding groove and a slider between the assembly base and the moving bracket. It achieves the effect of visually and accurately adjusting the gear spacing while ensuring the vertical stability and locking of the moving bracket. Attached Figure Description

[0020] Figure 1 This is a perspective view of the transmission gear precision meshing adjustment mechanism proposed in this utility model;

[0021] Figure 2 This is a front view of the transmission gear precision meshing adjustment mechanism proposed in this utility model;

[0022] Figure 3 This is a cross-sectional view of the movable bracket of the transmission gear precision meshing adjustment mechanism proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the assembly base of the transmission gear precision meshing adjustment mechanism proposed in this utility model.

[0024] Legend:

[0025] 1. Fixed gear; 2. Rotating shaft one; 3. Fixed bracket; 4. Spacing adjustment mechanism; 401. Assembly base; 402. Inner groove; 403. Slide groove; 404. Scale plate; 405. Moving bracket; 406. Clamping plate; 407. Sliding block; 408. Telescopic rod; 5. Axial adjustment mechanism; 501. Rotating push rod; 502. Knob; 503. Extrusion ring; 504. Bearing; 505. Rotating shaft two; 6. Moving gear. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Example: Please refer to Figures 1 to 4 This utility model provides a transmission gear precision meshing adjustment mechanism, which aims to solve the problem that the existing gear transmission mechanism lacks a structure that can independently and precisely adjust the center distance and axial position at the same time, resulting in poor gear meshing, high operating noise and rapid mechanical wear.

[0028] Please refer to Figure 1 and Figure 2 The transmission gear precision meshing adjustment mechanism includes a fixed bracket 3 and an assembly base 401 fixedly connected to the bottom of the fixed bracket 3. The fixed bracket 3 serves as the basic support component of the entire device, supporting the stationary gear set. The assembly base 401 extends horizontally and serves as the basic mounting platform for the entire device to achieve movement and adjustment. The fixed gear 1 is fixedly installed on the outer wall of the rotating shaft 2, and the front end of the rotating shaft 2 is rotatably connected to the rear side of the fixed bracket 3, forming a stationary gear set. The fixed gear 1 serves as the fixed point for power transmission, waiting to precisely mesh with the gear at the moving end. A movable support is slidably installed on the top of the assembly base 401. The frame 405, a movable support 405, serves as a movable carrier for mounting all the moving end mechanisms that realize meshing adjustment. The movable support 405 can change position on the mounting base 401. The transmission gear precise meshing adjustment mechanism also includes a spacing adjustment mechanism 4 for controlling the gear spacing and an axial adjustment mechanism 5 for controlling the gear axial alignment. The spacing adjustment mechanism 4 is connected between the mounting base 401 and the movable support 405, and the axial adjustment mechanism 5 is set on the movable support 405. The two mechanisms work together to achieve precise adjustment of the meshing state of the fixed gear 1 and the movable gear 6 from the two dimensions of radial distance and axial position, respectively.

[0029] Please refer to Figure 2 , Figure 3 and Figure 4The assembly base 401 has an inner groove 402 extending along its length, which is formed on the top surface of the assembly base 401. A sliding groove 403 is also formed on the front outer wall of the assembly base 401, parallel to the inner groove 402. The assembly base 401 provides precise guidance and limiting for the movement of the movable support 405. The movable support 405 is correspondingly provided with a locking plate 406 that mates with the inner groove 402, and a slider 407 that mates with the sliding groove 403. The locking plate 406 is fixedly connected to the rear bottom of the movable support 405, and the slider 407 is located on the bottom front side of the movable support 405. In the assembled state, the locking plate 406 of the movable support 405 slides into the inner groove 402 of the assembly base 401, and the slider 407 of the movable support 405 slides into the sliding groove 403 of the assembly base 401. This top-to-bottom assembly... The locking and sliding structure of the assembly base 401 forms a clamping effect, ensuring the high stability and anti-deflection ability of the moving bracket 405 during movement, and forming a stable vertical support. The spacing adjustment mechanism 4 includes a telescopic rod 408, which is fixedly installed on the top right side of the assembly base 401. The left output end of the telescopic rod 408 is fixedly connected to the side wall of the moving bracket 405. The telescopic rod 408 is used to push the moving bracket 405 to move slightly in the front and back direction along the assembly base 401. When the spacing is fixed, the telescopic rod 408 plays a supporting and anti-displacement role. A scale plate 404 is fixedly installed on the front outer wall of the assembly base 401 above the slide groove 403. The scale plate 404 extends along the length of the slide groove 403 and can display the scale. The operator can determine the gear spacing by observing the scale plate 404.

[0030] In a preferred embodiment, the axial adjustment mechanism 5 includes a rotating push rod 501, a knob 502, a pressing ring 503, a bearing 504, and a rotating shaft 505. The rear end of the rotating push rod 501 is fixedly connected to the pressing ring 503, and the rear edge of the pressing ring 503 is fixedly connected to the outer ring edge of the bearing 504. This fixed connection method is preferably a snap-fit ​​connection or an interference fit, which ensures that when the rotating push rod 501 rotates in the opposite direction, it can reliably drive the bearing 504 forward through the pressing ring 503, thereby realizing bidirectional fine adjustment of the axial position of the moving gear 6.

[0031] As another preferred embodiment, the outer wall of the rotary push rod 501 is connected to the front side wall of the movable bracket 405 by a threaded connection, so that the rotation of the knob 502 can be converted into the linear reciprocating movement of the rotary push rod 501. The knob 502 is located on the outside of the movable bracket 405, which is convenient for the operator to make manual adjustments. The compression ring 503 is located on the inside of the movable bracket 405 and acts directly on the bearing 504.

[0032] As another preferred embodiment, the telescopic rod 408 plays a supporting and anti-displacement role when the spacing is fixed, which enhances the rigidity and stability of the movable support 405 in the working state. Preferably, the telescopic rod 408 can be any one of electric push rod, pneumatic cylinder or hydraulic cylinder to adapt to different automation and control precision requirements.

[0033] In another preferred embodiment, the movable bracket 405 is designed as a box structure with a accommodating space. The bearing 504 is embedded in the internal space of the movable bracket 405, and the movable bracket 405 provides clearance for the axial movement of the bearing 504 and the movable gear 6, ensuring that the axial adjustment mechanism 5 is not interfered with by the structure of the movable bracket 405 when making fine adjustments to its position.

[0034] In another preferred embodiment, the fixed gear 1 and the rotating shaft 2 form a stationary gear set, and the movable gear 6 and the rotating shaft 505 form a position-adjustable gear set. The spacing adjustment mechanism 4 and the axial adjustment mechanism 5 work together to ensure that the center distance and relative position of the fixed gear 1 and the movable gear 6 reach the ideal state.

[0035] Working principle:

[0036] When it is necessary to adjust the meshing distance between the fixed gear 1 and the moving gear 6, the telescopic rod 408 is controlled to extend and retract. The telescopic rod 408 pushes the moving bracket 405 to slide smoothly along the length of the assembly base 401. During the movement of the moving bracket 405, the locking plate 406 on the rear side of the moving bracket 405 always slides in the inner groove 402 at the top of the assembly base 401, and the slider 407 at the bottom of the moving bracket 405 always slides in the sliding groove 403 on the front side of the assembly base 401. The locking plate 406 and the slider 407 cooperate to form a stable clamping guide for the assembly base 401. The operator can accurately determine the displacement by observing the value displayed on the scale plate 404 until the center distance between the fixed gear 1 and the moving gear 6 reaches the ideal state. At this time, the telescopic rod 408 remains fixed to prevent the moving bracket 405 from shifting position.

[0037] When it is necessary to adjust the axial alignment between the fixed gear 1 and the movable gear 6, the knob 502 is manually rotated. The knob 502 drives the rotating push rod 501 to rotate. Utilizing the threaded engagement between the rotating push rod 501 and the front side wall of the movable bracket 405, the rotating push rod 501 performs a linear feed motion relative to the movable bracket 405. The rotating push rod 501 drives the rear end compression ring 503 to move, which in turn drives the bearing 504 to move. The bearing 504 drives the internally rotatably connected rotating shaft 2 505 and the movable gear 6 fixed on the rotating shaft 2 505 to move synchronously along the axial direction, thereby fine-tuning the relative position of the movable gear 6 and the fixed gear 1 in the axial direction until their end faces are completely aligned. Through the synergistic action of the spacing adjustment mechanism 4 and the axial adjustment mechanism 5, the problems of high transmission noise and rapid wear caused by installation errors are effectively solved.

Claims

1. A transmission gear precision meshing adjustment mechanism, comprising: The assembly includes a fixed gear (1), a rotating shaft (2), a fixed bracket (3), a spacing adjustment mechanism (4), an assembly base (401), and a movable bracket (405). The fixed gear (1) is fixedly installed on the outer wall of the rotating shaft (2). The front end of the rotating shaft (2) is rotatably connected to the rear side of the fixed bracket (3). The assembly base (401) is located at the bottom of the fixed bracket (3). The movable bracket (405) is slidably installed on the assembly base (401). The transmission gear precision meshing adjustment mechanism is characterized in that it further includes an axial adjustment mechanism (5) and a moving gear (6). The spacing adjustment mechanism (4) is used to control the distance between the fixed gear (1) and the moving gear (6). The axial adjustment mechanism (5) is used to control the axial alignment between the fixed gear (1) and the moving gear (6). The spacing adjustment mechanism (4) includes a telescopic rod (408). The telescopic rod (408) is located on the top right side of the mounting base (401). The left output end of the telescopic rod (408) is fixedly connected to the moving bracket (405).

2. The precision mesh adjustment mechanism for a drive gear as set forth in claim 1, characterized in that, The axial adjustment mechanism (5) includes a rotating push rod (501), a knob (502), a pressing ring (503), a bearing (504), and a second rotating shaft (505). The rotating push rod (501) is threaded to the front side of the movable bracket (405). The knob (502) is fixedly connected to the front end of the rotating push rod (501). The pressing ring (503) is fixedly connected to the rear end of the rotating push rod (501). The rear edge of the pressing ring (503) is fixed to the edge of the bearing (504). The inner wall of the bearing (504) is rotatably engaged with the second rotating shaft (505). The moving gear (6) is fixed to the outer wall of the second rotating shaft (505). By rotating the knob (502), the rotating push rod (501) is driven, causing the pressing ring (503) to press the bearing (504) to move, thereby driving the moving gear (6) to move to adjust the axial alignment between the gears.

3. The precision mesh adjustment mechanism for a drive gear as set forth in claim 1, characterized in that, The top of the assembly base (401) is provided with an inner groove (402), which extends along the length of the assembly base (401). A retaining plate (406) is fixedly connected to the bottom rear side of the movable bracket (405). The retaining plate (406) engages with the inner groove (402) and restricts the movable bracket (405) from detaching from the assembly base (401).

4. The precision mesh adjustment mechanism for a drive gear as set forth in claim 3, characterized in that, The front side of the assembly base (401) is provided with a sliding groove (403), and the bottom of the movable bracket (405) is provided with a slider (407). The slider (407) is slidably engaged in the sliding groove (403). The sliding groove (403) is located below the inner groove (402) and the two are arranged in parallel.

5. The precision mesh adjustment mechanism for a drive gear as set forth in claim 4, characterized in that, The clamping plate (406) and the slider (407) cooperate to clamp the mounting base (401) to stabilize the movable bracket (405) in the vertical direction.

6. The precision mesh adjustment mechanism for a drive gear as set forth in claim 4, wherein, A scale plate (404) is provided on the front side of the mounting base (401) above the slide groove (403). The scale plate (404) can display scales and is used to determine the distance between the fixed gear (1) and the moving gear (6) by observing the scale plate (404).

7. The precision mesh adjustment mechanism for a drive gear as set forth in claim 1, wherein, The telescopic rod (408) is configured to push the movable support (405) to make slight movements in the front-back direction, and when the spacing is fixed, the telescopic rod (408) plays a supporting and anti-displacement role.

8. The precision mesh adjustment mechanism for a drive gear as set forth in claim 2, wherein, The rotating push rod (501) passes through the front side wall of the movable bracket (405), and the rotating push rod (501) and the movable bracket (405) are connected by a threaded engagement, so that the rotation of the knob (502) can be converted into the linear movement of the rotating push rod (501).

9. The precision mesh adjustment mechanism for a drive gear as set forth in claim 2, wherein, The compression ring (503) is configured to compress the bearing (504) to move backward by the thrust of the rotating push rod (501). The movement of the bearing (504) drives the moving gear (6) to move on the rotating shaft (505), thereby adjusting the axial position of the moving gear (6) relative to the fixed gear (1).

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