Automatic rail adjusting device

Abstract

The utility model provides an automatic track adjusting device which comprises a guide wheel assembly, an adjusting seat assembly and a linear guide rail mounting seat assembly, when the guide wheel assembly moves in a sliding groove along with movement of a chain wheel assembly, the relative position of a guide wheel and a rotating shaft changes, and therefore the angle of a flexible track is automatically changed, and the linear guide rail mounting seat assembly is adjusted. And the outer pitch circle of the chain wheel assembly is kept tangent to the flexible track. By means of the innovative structure, the flexible track achieves automatic adjustment, cost is reduced, installation is simpler and more convenient, angle control is more accurate, and adjustment is more convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of sliding chain clamp lateral pulling system, and in particular to an automatic track adjustment device. Background Technology

[0002] In today's sliding chain clamp traverse systems, the traverse system with an upper slide rail and sliding chain clamps has become an indispensable mainstream configuration. This system plays a crucial role in the production process, with the sprocket acting as the power source to drive the chain continuously. When the chain reaches the middle section, it relies on the precise guidance of the upper slide rail to ensure stable chain operation.

[0003] However, in actual production, the expansion of materials due to heat cannot be ignored. As the temperature rises, the length of the chain and track increases, thus affecting the overall system operation. To address this issue, a tensioning cylinder intervenes in a timely manner, pushing the sprocket assembly outward a certain distance to counteract the negative effects of thermal expansion. Maintaining the tangential relationship between the chain and sprocket during this process is crucial, as it directly affects the system's operating efficiency and the chain's lifespan.

[0004] CN105008110B discloses a track forced guiding device, which mainly consists of a curved rail, an adjusting seat assembly, and a slide retainer. The curved rail is fixed to a sprocket assembly, while the slide retainer is securely mounted on a track frame. The slider of the curved rail is tightly connected to the adjusting seat assembly, and the upper rail is connected to the adjusting seat assembly via a linear guide rail. Furthermore, the adjusting seat assembly is cleverly equipped with a guide wheel that can slide freely within the slide groove of the slide retainer. When the sprocket assembly moves outward due to thermal expansion, it ensures that the chain in the flexible upper slide rail remains tangential to the sprocket, thus ensuring stable system operation. However, while this device solves the problem to some extent, it also has some shortcomings. Specifically, the support of the adjusting seat mainly relies on the curved rail mounted on the sprocket assembly. This design not only increases cost but also makes the slider installation relatively complex. Furthermore, the swing angle of the flexible rail is affected by various factors, including the curve of the slide groove, the position of the slider on the adjusting seat, and the installation position of the guide wheel. Due to various factors during processing and assembly, angular errors are often large, which makes adjustment work inconvenient.

[0005] In summary, although existing track-guided devices have solved the problem of the chain and sprocket being tangent to some extent, there is still room for improvement in terms of cost, ease of installation, and adjustment accuracy. These are also problems that urgently need to be solved in the current sliding chain clamp lateral pull system. Utility Model Content

[0006] To address the aforementioned problems, this utility model provides an automatic track adjustment device. Through its innovative structure, it enables the flexible track to adjust automatically while reducing costs, simplifying and facilitating installation, providing more precise angle control, and making adjustment more convenient.

[0007] The technical solution of this utility model is as follows:

[0008] An automatic track adjustment device includes a guide wheel assembly, an adjustment seat assembly, and a linear guide rail mounting seat assembly, wherein...

[0009] The guide wheel assembly includes a guide wheel, an eccentric shaft, a support ring, and a support.

[0010] The support is fixedly mounted on the sprocket assembly.

[0011] The eccentric shaft is fixedly installed in the support by the support ring.

[0012] The guide wheel is rotatably mounted on the eccentric shaft;

[0013] The adjusting seat assembly includes a slot frame, a bracket, a first slider, a first linear guide rail, and a flexible track mounting plate;

[0014] The slot frame and the bracket are fixedly connected in a vertical direction, together forming the main frame of the adjustment seat assembly.

[0015] The slotted frame is provided with a sliding groove and positioning holes. As the sprocket assembly moves, the guide wheel assembly is confined within the sliding groove of the adjusting seat assembly and moves along a pre-set curved trajectory.

[0016] The bracket has a first slider on its outer side, and the first linear guide rail is slidably mounted on the bracket via the first slider. The flexible track mounting plate is fixedly connected to one side of the first linear guide rail, and the flexible track is fixedly connected to the bottom of the flexible track mounting plate.

[0017] The linear guide mounting bracket assembly includes a linear guide mounting plate, a second linear guide, a second slider, a rotating shaft, a rotating shaft seat, and a pressure plate.

[0018] One end of the linear guide rail mounting plate is fixedly mounted on the track frame, and the other end of the linear guide rail mounting plate is fixedly mounted on the sprocket assembly.

[0019] The second linear guide rail is fixedly mounted on the linear guide rail mounting plate along the sliding groove direction of the slot frame.

[0020] The second slider is slidably mounted on the second linear guide rail.

[0021] One end of the rotating shaft is fixedly mounted to the upper end of the second slider via a rotating shaft seat, and the other end of the rotating shaft passes through the positioning hole of the adjusting seat assembly and is fastened by the pressure plate;

[0022] As the guide wheel assembly moves within the groove along with the sprocket assembly, the relative position of the guide wheel and the rotating shaft changes, thereby automatically altering the angle of the flexible track and ensuring that the outer pitch circle of the sprocket assembly remains tangent to the flexible track.

[0023] Furthermore, in the guide wheel assembly, the sprocket assembly includes a sprocket and a sprocket movable seat, with the sprocket and the sprocket movable seat fixed at their axes. The sprocket movable seat is a supporting and moving component in the sprocket assembly, having a hole or groove that matches the sprocket axis for fixing and supporting the sprocket.

[0024] Furthermore, in the guide wheel assembly, the sprocket moving seat is connected to a transmission mechanism (such as a motor, hydraulic system, etc.) to realize the movement and positioning of the sprocket assembly.

[0025] Furthermore, in the guide wheel assembly, the lower end of the support is fixedly installed on the sprocket assembly by means of bolts or welding.

[0026] Furthermore, in the guide wheel assembly, the upper end of the support is provided with a groove that matches the support ring, for installing and positioning the lower half of the support ring.

[0027] Furthermore, in the guide wheel assembly, the upper half of the support ring is disposed between the guide wheel and the support to support the guide wheel, thereby ensuring that the guide wheel rotates smoothly.

[0028] Furthermore, the guide wheel assembly also includes an adjusting bolt that passes through the upper end of the support. The eccentric shaft is fixedly installed in the center hole of the support ring by the adjusting bolt. By rotating the adjusting bolt, the position of the guide wheel on the eccentric shaft can be adjusted, thereby fine-tuning the trajectory of the guide wheel assembly as it moves along the groove.

[0029] In this invention, due to the design of the eccentric shaft, it has a certain offset relative to the central axis of the support, which allows the guide wheel assembly to automatically adjust according to a predetermined curve trajectory when the sprocket assembly moves.

[0030] Furthermore, in the adjusting seat assembly, the slot frame is an approximately rectangular panel parallel to the sprocket assembly. A positioning hole is opened at the central axis of the slot frame for fixing the linear guide rail mounting assembly. On both sides of the positioning hole, at a certain interval from the positioning hole, the sliding groove and several elongated holes are symmetrically provided. The sliding groove is used to guide and restrict the movement of the guide wheel. The several elongated holes are arranged in a straight line along the direction of the first linear guide rail so that the slot frame and the bracket are fixedly connected by the assembly of the elongated holes and screws.

[0031] Furthermore, in the adjusting seat assembly, the support includes a horizontal plate, a vertical plate, and two side plates. The horizontal plate and the vertical plate are both rectangular, and the two side plates are triangular. The horizontal plate and the vertical plate are fixedly connected in a vertical direction, and the two side plates are each connected to the horizontal plate and the vertical plate, thereby forming a stable structure for the support.

[0032] Furthermore, in the adjusting seat assembly, the horizontal plate of the bracket is provided with several elongated holes, which are aligned with the axis of several elongated holes of the slot frame. The slot frame and the bracket are fastened together by screws passing through the corresponding upper and lower elongated holes.

[0033] Furthermore, in the adjustment seat assembly, two first sliders are symmetrically arranged on the outside of the vertical plate of the bracket along the central axis of the vertical plate, and the two first sliders are fixedly connected to the vertical plate by bolts or welding.

[0034] Furthermore, in the adjusting seat assembly, the first slider is equipped with ball bearings or steel balls, which continuously roll and circulate between the first slider and the first linear guide rail, thereby achieving high-precision linear movement of the adjusting seat assembly along the first linear guide rail.

[0035] Furthermore, in the adjusting seat assembly, the thickness of the panel area with several elongated holes of the slot frame is less than the thickness of the main panel of the slot frame 201, so that the horizontal plate of the bracket can be accommodated in a size-matched manner, thereby keeping the horizontal plate of the bracket and the main panel of the slot frame at the same level.

[0036] Furthermore, in the adjusting seat assembly, the slide groove is an arc or other non-linear curve to adapt to specific curve trajectory requirements and ensure that the guide wheel assembly can move smoothly along a predetermined path; the curve trajectory is calculated by back-calculating N points based on the tangent relationship between the flexible track and the sprocket when the sprocket moves outward a distance L after being tensioned, and then smoothly connecting these N points to obtain the curve.

[0037] Furthermore, in the adjusting seat assembly, the end of the slide or a specific position may be provided with a limiting structure, such as a protrusion or a step, so that the slide can limit the movement range of the guide wheel while satisfying the guiding function, and prevent it from exceeding the predetermined trajectory.

[0038] Furthermore, in the adjusting seat assembly, the slide groove can be made of wear-resistant and corrosion-resistant materials, such as any one of aluminum alloy, stainless steel, etc.; in order to improve wear resistance and reduce friction, the surface of the slide groove can be specially treated, such as coating, quenching, etc.

[0039] Furthermore, in the adjusting seat assembly, a plurality of screw holes are provided on one side of the first linear guide rail along the sliding direction of the first linear guide rail, so that the flexible track mounting plate is fixedly connected to the first linear guide rail by bolts.

[0040] Furthermore, in the adjusting seat assembly, the cross-section of the flexible track mounting plate is L-shaped, and the L-shaped slot of the flexible track mounting plate is provided with a snap-fit ​​structure for fixing and connecting the flexible track.

[0041] Furthermore, in the adjustment seat assembly, the flexible track mounting plate may be provided with elastic elements, such as springs or rubber pads, to absorb vibrations and impacts caused by adjustment and protect the flexible track from damage.

[0042] Furthermore, in the linear guide rail mounting bracket assembly, one end of the linear guide rail mounting plate is provided with four first screw holes, so that the linear guide rail mounting plate is fixedly mounted on the rail frame by bolts; the center line of the linear guide rail mounting plate is provided with a certain width of slot, the slot extends from one end of the linear guide rail mounting plate to the position of the first screw hole, so that the second linear guide rail is engaged in the slot and fixedly connected to the linear guide rail mounting plate; two second screw holes are symmetrically provided at both ends of the second linear guide rail, so that the other end of the linear guide rail mounting plate is fixedly mounted on the sprocket assembly by bolt connection.

[0043] Furthermore, in the linear guide mounting assembly, the second slider is equipped with ball bearings or steel balls, which continuously roll and circulate between the second slider and the second linear guide, thereby enabling the adjustment assembly to move linearly along the second linear guide with high precision.

[0044] Furthermore, in the linear guide rail mounting bracket assembly, the circumferential of the rotating shaft seat is provided with four third screw holes, and the rotating shaft seat and the second slider are fixedly connected by bolts. The center of the rotating shaft seat is provided with a screw hole that matches the size of the rotating shaft, so that one end of the rotating shaft passes through the central screw hole of the rotating shaft seat and is fixedly installed on the upper end of the second slider, and the other end of the rotating shaft passes through the positioning hole of the adjusting seat assembly and is fastened by the pressure plate, so that when the guide wheel assembly moves in the slide groove, the adjusting seat assembly, in conjunction with the second slider, slides along the second linear guide rail.

[0045] In this invention, the working mechanism of the aforementioned automatic track adjustment device is as follows:

[0046] Before the sprocket is tensioned, the extension line of the flexible track is tangent to the pitch circle outside the sprocket. After the equipment has been running for a period of time, the temperature gradually rises, and the chain expands due to heat. When the sprocket is tensioned, the sprocket assembly gradually moves outward a distance L. The sprocket assembly drives the guide wheel assembly to move the same distance L in the vertical direction. The guide wheel is restricted to move in the groove of the adjusting seat assembly along a preset curved trajectory, thereby linking the adjusting seat assembly to move a distance L along the second linear guide and the flexible guide A. Due to the restriction of the guide wheel's movement in the groove and the change in its relative position with the rotating shaft of the rotating shaft seat assembly, the angle of the flexible track also changes. The groove curve design, after calculation and geometric verification, ensures that the flexible track remains tangent to the pitch circle outside the chain within the distance L that the sprocket assembly moves, thus ensuring that the chain is tangent when it is connected to the sprocket.

[0047] The technical solution provided by this utility model can include the following beneficial effects:

[0048] (1) Automatic adjustment of the angle of the flexible track: The automatic track adjustment device of this utility model has a compact structure and can automatically adjust the angle of the flexible track throughout the tension distance of the sprocket without manual intervention, thereby improving production efficiency and automation.

[0049] (2) Cost reduction: The use of linear tracks instead of curved tracks shortens the track length and thus reduces costs.

[0050] (3) Easy installation: The installation of linear rails is easier than that of curved rails, simplifying the installation process.

[0051] (4) Precise control: The guide wheel adopts an eccentric shaft structure, which is easy to adjust and can achieve precise control of the angle of the flexible track, ensuring smooth meshing between the chain and the sprocket.

[0052] (5) Strong adaptability: This device is suitable for various horizontal pulling systems with upper slide rails and sliding chain clamps, and has strong versatility and adaptability.

[0053] (6) Improve production efficiency: By automatically adjusting the angle of the flexible track, the chain and sprocket are always tangent, thereby improving the stability and production efficiency of the production line.

[0054] (7) Optimized structural design: The overall structural design of the device is reasonable, and the connection between the various components is close and stable, which ensures the reliability and durability of the device. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the overall structure of the automatic track adjustment device of this utility model.

[0056] Figure 2 This is a schematic diagram of the working mechanism of the automatic track adjustment device of this utility model.

[0057] Figure 3 This is a cross-sectional view of the guide wheel assembly.

[0058] Figure 4 This is a schematic diagram of the guide wheel assembly.

[0059] Figure 5 This is a schematic diagram of the adjustment seat assembly.

[0060] Figure 6 This is a structural schematic diagram of a linear guide rail mounting bracket assembly.

[0061] The attached figures are labeled as follows:

[0062] 1—Guide wheel assembly,

[0063] 101—Guide wheel,

[0064] 102—Eccentric shaft,

[0065] 103—Support ring,

[0066] 104—Support,

[0067] 105—Adjusting bolt;

[0068] 2—Adjustment seat assembly,

[0069] 201—Slot frame, 201a—Slide groove, 201b—Positioning hole

[0070] 202—Support, 202a—Horizontal plate, 202b—Vertical plate, 202c—Side plate

[0071] 203—First slider,

[0072] 204—First linear guide rail,

[0073] 205—Flexible track mounting plate;

[0074] 3—Linear guide rail mounting base,

[0075] 301—Linear guide rail mounting plate, 301a—First screw hole,

[0076] 302—Second linear guide, 302a—Second screw hole

[0077] 303—Second slider,

[0078] 304 - Shaft

[0079] 305—Spindle seat, 305a—Third threaded hole

[0080] 306—Pressure plate. Detailed Implementation

[0081] The following description and accompanying drawings fully illustrate specific embodiments of the present invention to enable those skilled in the art to practice them. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Some portions and features of certain embodiments may be included in or replace portions and features of other embodiments. The scope of the embodiments of the present invention includes the entire scope of the claims and all available equivalents thereof.

[0082] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0083] Example

[0084] like Figures 1 to 6 As shown, an automatic track adjustment device includes a guide wheel assembly 1, an adjustment seat assembly 2, and a linear guide rail mounting seat assembly 3, wherein...

[0085] The guide wheel assembly 1 includes a guide wheel 101, an eccentric shaft 102, a support ring 103, and a support 104;

[0086] Among them, the support 104 is fixedly installed on the sprocket assembly 4.

[0087] The eccentric shaft 102 is fixedly installed in the support 104 by the support ring 103.

[0088] The guide wheel 101 is rotatably mounted on the eccentric shaft 102;

[0089] The adjusting seat assembly 2 includes a slot frame 201, a bracket 202, a first slider 203, a first linear guide rail 204, and a flexible track mounting plate 205;

[0090] The slot frame 201 and the bracket 202 are fixedly connected in a vertical direction, together forming the main frame of the adjustment seat assembly 2.

[0091] The slot frame 201 is provided with a sliding groove 201a and a positioning hole 201b. As the sprocket assembly 4 moves, the guide wheel assembly 1 is confined within the sliding groove 201a of the adjusting seat assembly 2 and moves along a pre-set curved trajectory.

[0092] The bracket 202 is provided with a first slider 203 on the outside. The first linear guide rail 204 is slidably mounted on the bracket 202 through the first slider 203. A flexible track mounting plate 205 is fixedly connected to one side of the first linear guide rail 204, and a flexible track 5 is fixedly connected below the flexible track mounting plate 205.

[0093] The linear guide mounting bracket assembly 3 includes a linear guide mounting plate 301, a second linear guide 302, a second slider 303, a rotating shaft 304, a rotating shaft seat 305, and a pressure plate 306.

[0094] One end of the linear guide mounting plate 301 is fixedly mounted on the track frame 6, and the other end of the linear guide mounting plate 301 is fixedly mounted on the sprocket assembly 4.

[0095] The second linear guide rail 302 is fixedly installed on the linear guide rail mounting plate 301 along the slide groove 201a direction of the slot frame 201.

[0096] The second slider 303 is slidably mounted on the second linear guide rail 302.

[0097] One end of the rotating shaft 304 is fixedly installed on the upper end of the second slider 303 through the rotating shaft seat 305, and the other end of the rotating shaft 304 passes through the positioning hole 201b of the adjusting seat assembly 2 and is fastened by the pressure plate 306.

[0098] As the guide wheel assembly 1 moves within the slide groove 201a along with the sprocket assembly 4, the relative position of the guide wheel 101 and the rotating shaft 304 changes, thereby automatically changing the angle of the flexible track 5 so that the outer pitch circle of the sprocket assembly 4 remains tangent to the flexible track 5.

[0099] Furthermore, the sprocket assembly 4 includes a sprocket 401 and a sprocket movable seat 402, which are axially fixed together. The sprocket movable seat 402 is a supporting and moving component in the sprocket assembly 4, and it has a hole or groove that matches the axis of the sprocket 401 for fixing and supporting the sprocket.

[0100] Furthermore, in the guide wheel assembly 1, the sprocket moving seat 402 is connected to the transmission mechanism (such as a motor, hydraulic system, etc.) to realize the movement and positioning of the sprocket assembly 4.

[0101] Furthermore, in the guide wheel assembly 1, the lower end of the support 104 is fixedly installed on the sprocket assembly 4 by means of bolts or welding.

[0102] Furthermore, in the guide wheel assembly 1, the upper end of the support 104 is provided with a groove that matches the support ring 103, for installing and positioning the lower half of the support ring 103.

[0103] Furthermore, in the guide wheel assembly 1, the upper half of the support ring 103 is disposed between the guide wheel 101 and the support 104 to support the guide wheel 101, thereby ensuring that the guide wheel 101 rotates smoothly.

[0104] Furthermore, the guide wheel assembly 1 also includes an adjusting bolt 105, which passes through the upper end of the support 104. The eccentric shaft 102 is fixedly installed in the center hole of the support ring 103 by the adjusting bolt 105. By rotating the adjusting bolt 105, the position of the guide wheel 101 on the eccentric shaft 102 can be adjusted, thereby fine-tuning the trajectory of the guide wheel 101 assembly when it moves along the slide groove 201a.

[0105] Furthermore, in the adjusting seat assembly 2, the slot frame 201 is an approximately rectangular panel parallel to the sprocket assembly 4. A positioning hole 201b is opened at the central axis of the slot frame 201 for fixing the linear guide rail mounting assembly 3. On both sides of the positioning hole 201b and at a certain interval from the positioning hole 201b, there are symmetrically arranged sliding grooves 201a and several elongated holes. The sliding grooves 201a are used to guide and restrict the movement of the guide wheel 101. The several elongated holes are arranged in a straight line along the direction of the first linear guide rail 204 so that the slot frame 201 and the bracket 202 are fixedly connected by the assembly of the elongated holes and screws.

[0106] Furthermore, in the adjusting seat assembly 2, the bracket 202 includes a horizontal plate 202a, a vertical plate 202b, and two side plates 202c. The horizontal plate 202a and the vertical plate 202b are both rectangular, and the two side plates 202c are triangular. The horizontal plate 202a and the vertical plate 202b are fixedly connected in a vertical direction, and the two side plates 202c are each connected to the horizontal plate 202a and the vertical plate 202b, thereby making the bracket 202 form a stable structure.

[0107] Furthermore, in the adjusting seat assembly 2, the horizontal plate 202a of the bracket 202 is provided with several elongated holes, which are aligned with the axis of several elongated holes of the slot frame 201. The slot frame 201 and the bracket 202 are fastened together by screws passing through the corresponding elongated holes.

[0108] Furthermore, in the adjusting seat assembly 2, two first sliders 203 are symmetrically arranged on the vertical plate 202b of the bracket 202 along the central axis of the vertical plate 202b. The two first sliders 203 are fixedly connected to the vertical plate 202b by bolts or welding.

[0109] Furthermore, in the adjusting seat assembly 2, the first slider 203 is equipped with ball bearings or steel balls. These ball bearings continuously roll and circulate between the first slider 203 and the first linear guide rail 204, realizing high-precision linear movement of the adjusting seat assembly 2 along the first linear guide rail 204.

[0110] Furthermore, in the adjusting seat assembly 2, the thickness of the panel area with several elongated holes in the slot frame 201 is smaller than the thickness of the main panel of the slot frame 201, so that the horizontal plate 202a of the support 202 can be accommodated in a size-matched manner, thereby keeping the horizontal plate 202a of the support 202 and the main panel of the slot frame 201 at the same level.

[0111] Furthermore, in the adjusting seat assembly 2, the slide groove 201a is an arc or other non-linear curve to adapt to specific curve trajectory requirements and ensure that the guide wheel assembly 1 can move smoothly along a predetermined path; the curve trajectory is calculated by back-calculating N points based on the tangent relationship between the flexible track 5 and the sprocket 401 when the sprocket 401 moves outward a distance L after being tensioned, and then smoothly connecting these N points to obtain the curve.

[0112] Furthermore, in the adjusting seat assembly 2, the end or a specific position of the slide 201a may be provided with a limiting structure, such as a protrusion or a step, so that the slide 201a can limit the movement range of the guide wheel 101 while satisfying the guiding function, and prevent it from exceeding the predetermined trajectory.

[0113] Furthermore, in the adjusting seat assembly 2, the slide 201a can be made of wear-resistant and corrosion-resistant materials, such as any one of aluminum alloy, stainless steel, etc.; in order to improve wear resistance and reduce friction, the surface of the slide 201a can be specially treated, such as coating, quenching, etc.

[0114] Furthermore, in the adjusting seat assembly 2, a plurality of screw holes are provided on one side of the first linear guide rail 204 along the sliding direction of the first linear guide rail 204, so that the flexible track mounting plate 205 is fixedly connected to the first linear guide rail 204 by bolts.

[0115] Furthermore, in the adjusting seat assembly 2, the cross-section of the flexible track mounting plate 205 is L-shaped, and the L-shaped slot of the flexible track mounting plate 205 is provided with a snap-fit ​​structure for fixing and connecting the flexible track 5.

[0116] Furthermore, in the adjustment seat assembly 2, the flexible track mounting plate 205 may be provided with elastic elements, such as springs or rubber pads, to absorb vibrations and impacts caused by adjustment and protect the flexible track from damage.

[0117] Furthermore, in the linear guide mounting bracket assembly 3, one end of the linear guide mounting plate 301 is provided with four first screw holes 301a, so that the linear guide mounting plate 301 is fixedly mounted on the rail frame 6 by bolts; the center line of the linear guide mounting plate 301 is provided with a slot of a certain width, the slot extends from one end of the linear guide mounting plate 301 to the position of the first screw hole 301a, so that the second linear guide 302 is engaged in the slot and fixedly connected to the linear guide mounting plate 301; the two ends of the second linear guide 302 are symmetrically provided with two second screw holes 302a, so that the other end of the linear guide mounting plate 301 is fixedly mounted on the sprocket assembly 4 by bolt connection.

[0118] Furthermore, in the linear guide mounting bracket assembly 3, the second slider 303 is equipped with ball bearings or steel balls. These ball bearings continuously roll and circulate between the second slider 303 and the second linear guide 302, realizing high-precision linear movement of the adjusting bracket assembly 2 along the second linear guide 302.

[0119] Furthermore, in the linear guide mounting bracket assembly 2, the circumferential of the pivot seat 305 is provided with four third screw holes 305a. The pivot seat 305 and the second slider 303 are fixedly connected by bolts. The center of the pivot seat 305 is provided with a screw hole that matches the size of the pivot 304, so that one end of the pivot 304 passes through the central screw hole of the pivot seat 305 and is fixedly installed on the upper end of the second slider 303. The other end of the pivot 304 passes through the positioning hole 201b of the adjusting bracket assembly 2 and is fastened by the pressure plate 306. Thus, when the guide wheel assembly 1 moves in the slide groove 201a, the adjusting bracket assembly 2, in conjunction with the second slider 303, slides along the second linear guide rail 302.

[0120] In this invention, the working mechanism of the aforementioned automatic track adjustment device is as follows:

[0121] Before the sprocket is tensioned, the extension line of the flexible track 5 is tangent to the pitch circle outside the sprocket 401. After the equipment has been running for a period of time, the temperature gradually rises and the chain expands due to heat. When the sprocket 401 is tensioned, the sprocket assembly 4 gradually moves outward a distance L. The sprocket assembly 4 drives the guide wheel assembly 1 to move the same distance L in the vertical direction. The guide wheel 101 is restricted to move in the groove 201a of the adjusting seat assembly 2 with a preset curved trajectory, thereby linking the adjusting seat assembly 2 to move a distance L along the second linear guide rail 302 and the first linear guide rail 301. Due to the restriction on the movement of the guide wheel 101 in the groove 201a and the change in its relative position with the rotating shaft 304, the angle of the flexible track 5 also changes. The groove curve design, after calculation and geometric verification, will ensure that the flexible track 5 remains tangent to the pitch circle outside the chain within the distance L of the movement of the sprocket assembly 4, thereby ensuring that the chain is tangent when it is connected to the sprocket.

[0122] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any other way. Any modifications or equivalent changes made based on the technical essence of the present utility model shall still fall within the scope of protection claimed by the present utility model.

Claims

1. An automatic track adjustment device, characterized in that, It includes a guide wheel assembly (1), an adjustment seat assembly (2), and a linear guide rail mounting seat assembly (3), wherein, The guide wheel assembly (1) includes a guide wheel (101), an eccentric shaft (102), a support ring (103), and a support (104). The support (104) is fixedly installed on the sprocket assembly (4). The eccentric shaft (102) is fixedly installed in the support (104) by the support ring (103). The guide wheel (101) is rotatably mounted on the eccentric shaft (102); The adjustment seat assembly (2) includes a slot frame (201), a bracket (202), a first slider (203), a first linear guide rail (204), and a flexible track mounting plate (205). The slot frame (201) and the bracket (202) are fixedly connected in a vertical direction, together forming the main frame of the adjustment seat assembly (2). The slot frame (201) is provided with a sliding groove (201a) and a positioning hole (201b). As the sprocket assembly (4) moves, the guide wheel assembly (1) is restricted to move along a set curved trajectory in the sliding groove (201a) of the adjusting seat assembly (2). The bracket (202) has a first slider (203) on its outer side. The first linear guide rail (204) is slidably mounted on the bracket (202) through the first slider (203). The flexible track mounting plate (205) is fixedly connected to one side of the first linear guide rail (204). The flexible track (5) is fixedly connected below the flexible track mounting plate (205). The linear guide mounting bracket assembly (3) includes a linear guide mounting plate (301), a second linear guide (302), a second slider (303), a rotating shaft (304), a rotating shaft seat (305), and a pressure plate (306). One end of the linear guide mounting plate (301) is fixedly mounted on the track frame (6), and the other end of the linear guide mounting plate (301) is fixedly mounted on the sprocket assembly (4). The second linear guide rail (302) is fixedly mounted on the linear guide rail mounting plate (301) along the direction of the slide groove (201a) of the slot frame (201). The second slider (303) is slidably mounted on the second linear guide (302). One end of the rotating shaft (304) is fixedly installed on the upper end of the second slider (303) through the rotating shaft seat (305), and the other end of the rotating shaft (304) passes through the positioning hole (201b) of the adjusting seat assembly (2) and is fastened by the pressure plate (306); As the guide wheel assembly (1) moves within the groove (201a) along with the sprocket assembly (4), the relative position of the guide wheel (101) and the rotating shaft (304) changes, thereby automatically changing the angle of the flexible track (5) so that the outer pitch circle of the sprocket assembly (4) remains tangent to the flexible track (5).

2. The automatic track adjustment device according to claim 1, characterized in that, In the guide wheel assembly (1), the lower end of the support (104) is fixedly mounted on the sprocket assembly (4) by bolts or welding.

3. The automatic track adjustment device according to claim 1 or 2, characterized in that, In the guide wheel assembly (1), the upper end of the support (104) is provided with a groove that matches the support ring (103) for installing and positioning the lower half of the support ring (103).

4. The automatic track adjustment device according to claim 3, characterized in that, In the guide wheel assembly (1), the upper half of the support ring (103) is disposed between the guide wheel (101) and the support (104) to support the guide wheel (101), thereby ensuring that the guide wheel (101) rotates smoothly.

5. The automatic track adjustment device according to claim 4, characterized in that, The guide wheel assembly (1) also includes an adjusting bolt (105) that passes through the upper end of the support (104). The eccentric shaft (102) is fixedly installed in the center hole of the support ring (103) by the adjusting bolt (105). The position of the guide wheel (101) on the eccentric shaft (102) can be adjusted by rotating the adjusting bolt (105), thereby fine-tuning the trajectory of the guide wheel (101) assembly when it moves along the slide (201a).

6. The automatic track adjustment device according to claim 1, characterized in that, In the adjusting seat assembly (2), the slot frame (201) is an approximately rectangular panel parallel to the sprocket assembly (4). A positioning hole (201b) is opened at the central axis of the slot frame (201) for fixing the linear guide rail mounting seat assembly (3). On both sides of the positioning hole (201b) and at a certain interval from the positioning hole (201b), the slide groove (201a) and several elongated holes are symmetrically provided. The slide groove (201a) is used to guide and restrict the movement of the guide wheel (101). The several elongated holes are arranged in a straight line along the direction of the first linear guide rail (204) so ​​that the slot frame (201) and the bracket (202) are fixedly connected by the assembly of the elongated holes and screws.

7. The automatic track adjustment device according to claim 6, characterized in that, In the adjustment seat assembly (2), two first sliders (203) are symmetrically arranged on the vertical plate (202b) of the bracket (202) along the central axis of the vertical plate (202b). The two first sliders (203) are fixedly connected to the vertical plate (202b) by bolts or welding.

8. The automatic track adjustment device according to claim 7, characterized in that, In the adjusting seat assembly (2), the slide groove (201a) is an arc or other non-linear curve to adapt to specific curve trajectory requirements and ensure that the guide wheel assembly (1) can move smoothly along a predetermined path; the curve trajectory is calculated by back-calculating N points based on the tangent relationship between the flexible track (5) and the sprocket (401) when the sprocket (401) moves outward a distance L after being tensioned, and then smoothly connecting these N points to obtain the curve.

9. The automatic track adjustment device according to claim 1, characterized in that, In the linear guide mounting bracket (3), one end of the linear guide mounting plate (301) is provided with four first screw holes (301a), so that the linear guide mounting plate (301) is fixedly mounted on the track frame (6) by bolts; the center line of the linear guide mounting plate (301) is provided with a slot of a certain width, the slot extends from one end of the linear guide mounting plate (301) to the position of the first screw hole (301a), so that the second linear guide (302) is engaged in the slot and fixedly connected to the linear guide mounting plate (301); the two ends of the second linear guide (302) are symmetrically provided with two second screw holes (302a), and the other end of the linear guide mounting plate (301) is fixedly mounted on the sprocket assembly (4) by bolt connection.

10. The automatic track adjustment device according to claim 9, characterized in that, In the linear guide mounting bracket assembly (3), the circumferential of the rotating shaft seat (305) is provided with four third screw holes (305a). The rotating shaft seat (305) and the second slider (303) are fixedly connected by bolts. The center of the rotating shaft seat (305) is provided with a screw hole that matches the size of the rotating shaft (304), so that one end of the rotating shaft (304) passes through the center screw hole of the rotating shaft seat (305) and is fixedly installed on the upper end of the second slider (303). The other end of the rotating shaft (304) passes through the positioning hole (201b) of the adjusting seat assembly (2) and is fastened by the pressure plate (306). Thus, when the guide wheel assembly (1) moves in the slide groove (201a), the adjusting seat assembly (2) moves the second slider (303) along the second linear guide rail (302).

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