Saw chain guide plate with replaceable guide wheels
By designing a saw chain guide plate with replaceable guide wheels, and employing a disassembly mechanism with limiting components and return springs, as well as a lubrication assembly, the problem of difficult replacement after guide wheel wear is solved, achieving quick disassembly and self-lubrication, thus improving the saw chain's operational stability and cutting efficiency.
Patent Information
- Application Number
- CN202423169965.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The existing guide wheels are difficult to replace and disassemble after wear, which affects the normal operation of the saw chain and cutting efficiency, and poses a safety hazard.
A saw chain guide plate with replaceable guide wheels was designed. It adopts a disassembly mechanism with a limit component and a return spring. The mounting component and the sleeve are connected by fastening bolts. Combined with a lubrication component and an airbag lubrication system, it can achieve quick disassembly and self-lubrication.
It improves the efficiency of guide wheel replacement and maintenance, ensures device stability, reduces friction, extends bearing life, and improves cutting efficiency and safety.
Smart Images
Figure CN223790756U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the saw chain guide plate field especially relates to a saw chain guide plate of replaceable guide wheel. BACKGROUND
[0002] In many fields such as forestry, wood processing, building demolition, saw chain is widely used as an important cutting tool, and its guide plate and guide wheel assembly are the key parts to ensure the efficient and stable operation of the saw chain.
[0003] The saw chain needs to cut along a specific path when running at high speed, and the guide wheel provides precise guidance for the saw chain through close cooperation with the saw chain, ensuring the stable and straight operation of the saw chain on the guide plate, avoiding the left and right swing or up and down bounce of the saw chain, and thus ensuring the cutting accuracy and straightness.
[0004] However, during the long-term engagement of the guide wheel with the saw chain, the teeth will gradually wear out. After the teeth wear out, the matching accuracy of the guide wheel with the saw chain is reduced, and problems such as tooth skipping and tooth jamming are likely to occur, affecting the normal operation of the saw chain, leading to uneven cutting, and even possibly damaging the saw chain. The working surface of the guide wheel is continuously rubbed by the saw chain, which will wear out. When the surface wear is serious, it will become rough and uneven, increasing the friction between the saw chain and the guide wheel, increasing the running resistance of the saw chain, not only reducing the cutting efficiency, but also causing the wear of the saw chain and the guide wheel to further intensify. The edge wear of the guide wheel will cause its width to decrease, weakening the lateral support and guidance of the saw chain, and the saw chain is likely to deviate during operation, even derail, posing a great safety hazard.
[0005] Once the above situation is found, the guide wheel needs to be replaced, but the existing guide wheel replacement is relatively troublesome, and the guide wheel or bearing is relatively time-consuming to disassemble. SUMMARY
[0006] In order to make up for the above shortcomings, the utility model provides a saw chain guide plate with replaceable guide wheel, which aims to improve the problem of guide wheel replacement being relatively troublesome and the disassembly efficiency of guide wheel or bearing being reduced in the prior art.
[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme: a saw chain guide plate with replaceable guide wheel, the guide plate front side is provided with guide wheel, the guide wheel inside is provided with bearing, the bearing inside is provided with disassembly mechanism, the disassembly mechanism includes connecting assembly and auxiliary assembly, the connecting assembly includes mounting piece and sleeve piece, the mounting piece and sleeve piece are mutually inserted and fastened by fastening bolt, the sleeve piece inner wall is radially provided with return spring and limiting piece, the fastening bolt end portion circumference is provided with limiting groove, and the end portion of the limiting piece is matched with the limiting groove.
[0008] As preferred, the mounting piece has a supporting tube matched with the bearing inner hole, the supporting tube has a tube hole at the center, the sleeve piece has a plug tube inserted into the tube hole, the plug tube has a screw hole at the center matched with the fastening bolt.
[0009] As preferred, the limiting piece is located at the bottom of the corresponding screw hole of the sleeve piece, and the end of the limiting piece towards the center of the screw hole is a ball head.
[0010] As preferred, the limiting piece is matched with a plurality of return springs, and the plurality of limiting pieces and return springs are evenly distributed with the center of the sleeve piece as the center.
[0011] As preferred, both sides of the guide plate are provided with clamping grooves, the clamping grooves are circular, and a circular convex is arranged on the circumference, the end of the mounting piece is an end plate matched with the corresponding clamping groove, the end plate is circular, and a circular concave matched with the circular convex is arranged on the circumference, and the end of the sleeve piece is an end plate matched with the corresponding clamping groove, the end plate is circular, and a circular concave matched with the circular convex is arranged on the circumference.
[0012] As preferred, the inner wall of the mounting piece is provided with an oil storage bin, the inner wall of the mounting piece is provided with a lubricating assembly, the lubricating assembly comprises a cover, the cover is threadedly connected to the right inner wall of the mounting piece, the inner wall of the mounting piece is provided with an air bag, and the upper portion of the air bag is fixedly connected with a sliding plate.
[0013] As preferred, the inner wall of the mounting piece and the oil storage bin are in communication through a through hole, the through hole is arranged in the inner wall of the mounting piece, and the inner side of the mounting piece is fixedly connected with an oil outlet.
[0014] As preferred, the oil outlet is in the shape of a cone.
[0015] As preferred, the oil outlet is made of rubber.
[0016] The utility model has the following beneficial effects:
[0017] 1、in the utility model, a group of fastening bolts are rotated to quickly release the connection between the mounting piece and the sleeve piece, so that the mounting piece and the sleeve piece can be quickly disassembled from the guide plate, the replacement and maintenance efficiency of the guide wheel is improved, and through the cooperation of the limiting piece and the return spring, the fastening bolt can be limited, the fastening bolt is prevented from loosening, and therefore the stability of the device is improved.
[0018] 2、in the utility model, the lubricating assembly and the bearing are used in cooperation, when the guide wheel works, the heat generated causes the air bag to expand, so as to drive the sliding plate to push the lubricating oil to be extruded through the oil outlet, then the lubricating oil enters the bearing through the connecting hole on the bearing, the self-lubrication of the bearing is realized, and the service life of the bearing is improved. DRAWINGS
[0019] Figure 1 is a schematic diagram of the three-dimensional structure of the integral device in the utility model;
[0020] Figure 2 is a schematic diagram of the split three-dimensional structure of the integral device in the utility model;
[0021] Figure 3 is a schematic diagram of the front view three-dimensional structure section of the mounting member in the utility model;
[0022] Figure 4 is a schematic diagram of the front view three-dimensional structure section of the sleeve joint member in the utility model;
[0023] Figure 5 is a schematic diagram of the front view three-dimensional structure section of the oil outlet member in the utility model;
[0024] Figure 6 is a schematic diagram of the three-dimensional structure of the integral device in the utility model Figure 2 is an enlarged schematic diagram of the three-dimensional structure of A in the utility model.
[0025] Legend:
[0026] 1, guide plate; 2, guide wheel; 3, bearing; 41, mounting member; 42, sleeve joint member; 43, fastening bolt; 44, limiting member; 45, return spring; 46, limiting groove; 47, clamping groove; 5, oil storage bin; 51, cover; 52, air bag; 53, sliding plate; 54, oil outlet member; 6, through hole; 7, connecting hole. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model.
[0028] Refer to Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a saw chain guide plate with replaceable guide wheels, including a guide plate 1 for supporting the saw chain. A guide wheel 2 is provided on the front side of the guide plate 1, whose main function is to contact the chain and assist the chain to move smoothly along the path specified by the guide plate 1, ensuring that the saw chain cutting work can be carried out stably and efficiently. A bearing 3 is provided on the inner side of the guide wheel 2, which can support the guide wheel 2 and allow it to rotate flexibly, reducing the resistance during the rotation of the guide wheel 2 and reducing wear between components. A connecting hole 7 is provided on the inner side of the bearing 3, which can... In conjunction with the lubrication components, a disassembly mechanism is provided on the inner side of the bearing 3 to provide a flow path for the lubricating oil. The disassembly mechanism includes a connecting component and an auxiliary component. The connecting component includes a mounting part 41 and a sleeve part 42. The mounting part 41 and the sleeve part are located on both sides of the guide plate 1, respectively. The sleeve part 42 and the mounting bracket 41 are interlocked and fixed by fastening bolts 43. The mounting part 41 has a support tube that mates with the inner wall of the bearing 3. The support tube provides a connection base for the bearing 3. The support tube has a tube hole in its axis. The sleeve part 42 has an insertion tube that is inserted into the tube hole.
[0029] The insert of the socket has a threaded hole at its axial center that mates with the fastening bolt 42. A limiting hole is radially provided at the bottom of the threaded hole corresponding to the insert. A limiting element 44 and a return spring 45 are installed within the limiting hole. The limiting element has a ball-head end facing the axis of the threaded hole. A limiting groove 46 is circumferentially provided at the end of the fastening bolt 43, and the limiting groove is located in a ball groove structure that matches the ball-head end of the limiting element. After the fastening bolt 43 is threadedly connected to the insert of the socket 42, the ball-head end of the limiting element 44, in cooperation with the return spring 45, inserts into the limiting groove, thus restricting the axial movement of the fastening bolt 43 and ensuring the stability of the connection between the mounting part 41 and the socket 42. When it is necessary to disassemble the guide wheel 2, a tool can be used to rotate the fastening bolt 43, causing the limiting element 44 to overcome the spring force and disengage from the limiting groove 46, facilitating subsequent disassembly. The end of the mounting part only has a small hole for the fastening bolt to pass through; the rest is closed. After the fastening bolt 43 is tightened, ensure that the mounting part and the sleeve 42 are firmly connected, and guarantee the stability of the guide wheel 2 and bearing 3 after installation. Multiple sets of limiting parts 44 and return springs 45 are provided. These multiple sets of limiting parts 44 and return springs 45 are evenly distributed around the center point of the sleeve 42, which can evenly limit the fastening bolt 43 from multiple directions, making the entire connection structure more stable and reliable.
[0030] Reference Figure 1 and Figure 2The left and right sides of the guide plate are provided with clamping grooves 47 corresponding to the positions of the guide wheels, the clamping grooves are circular and are provided with a circular convex on the circumference, the end of the corresponding mounting piece is provided with an end plate matched with the clamping groove, the end plate is circular and is provided with a circular concave matched with the circular convex on the circumference, and the end of the sleeve piece is also provided with an end plate, the end plate is circular and is provided with a circular concave matched with the circular convex. The clamping grooves 47 assist the positioning and installation of the mounting piece 41 and the sleeve piece 42 on the guide plate 1, and further ensure the connection accuracy and stability between the entire disassembly mechanism and the guide plate 1. After the end plate of the mounting piece and the sleeve piece is matched with the corresponding clamping groove, the end surface of the mounting piece and the end surface of the sleeve piece are flush with the side surface of the guide plate.
[0031] Referring to Figure 3 and Figure 5 An oil storage tank 5 is formed in the inner wall of the mounting piece 41 for storing lubricating oil to provide an oil source for the bearing 3, so that there is enough lubricating oil to reduce the friction between parts during the operation of the guide wheel 2 and the bearing 3, prolonging the service life. A lubricating assembly is arranged on the inner wall of the mounting piece 41, which includes a cover 51 that mainly serves to seal the oil storage tank 5 to prevent leakage of lubricating oil and facilitates opening for operation when it is necessary to supplement lubricating oil. The right side of the cover 51 is loosened with a regular hexagonal groove, which can be opened with a tool. The cover 51 is threadedly connected to the right inner wall of the mounting piece 41. The inner wall of the mounting piece 41 is provided with air bags 52, which are provided with two groups of active gas and can be expanded by heat. The upper part of the air bag 52 is fixedly connected with a sliding plate 53, which is provided with two groups. The sliding plate 53 can slide on the inner wall of the mounting piece 41 and is initially located below the through hole 6. Since heat is generated during the operation of the device, the volume of the air bag 52 increases when it is heated. During the expansion process, the sliding plate 53 is pushed to move, and the lubricating oil is extruded. The through hole 6 formed in the inner wall of the mounting piece 41 is extruded to the oil outlet 54, and the lubricating oil flows out through the oil outlet 54.
[0032] Further, the inner wall of the mounting piece 41 and the oil storage tank 5 are connected to each other through the through hole 6. The through hole 6 is formed in the inner wall of the mounting piece 41 to provide a channel for the lubricating oil to flow from the oil storage tank 5 to the oil outlet 54, ensuring that the lubricating work can be carried out smoothly. The inner side of the mounting piece 41 is fixedly connected with the oil outlet 54, which is provided with two groups and is arranged on the upper and lower inner walls of the mounting piece 41. The oil outlet 54 is tapered in shape and is made of rubber material. When the oil outlet 54 is subjected to pressure, the upper part thereof will deform outward, so that the lubricating oil flows out and flows into the interior of the bearing 3 through the connecting hole 7 for lubrication. The hole diameter of the upper side of the oil outlet 54 is smaller than that of the lower side, preventing the lubricating oil from leaking out under no pressure.
[0033] Working principle: in use, when the guide wheel 2 and bearing 3 need to be disassembled, the fastening bolt 43 is rotated by using a tool, with the rotation of the fastening bolt 43, the limiting piece 44 is extruded outward under the action of the limiting groove 46, overcoming the elastic force of the reset spring 45, so that the limiting piece 44 is separated from the limiting groove 46, and the limiting of the fastening bolt 43 is released, at this time, the sleeve piece 42 can be conveniently disassembled from the mounting piece 41, and the disassembly operation of the guide wheel 2 and the bearing 3 is completed.
[0034] In the saw chain working process, due to the friction heat of the guide wheel 2 and the influence of the surrounding environment temperature, the air bag 52 will be heated and expanded, the expansion of the air bag 52 pushes the sliding plate 53 fixedly connected with the upper part of the air bag 52 to slide upward in the inner wall of the mounting piece 41, the initial position of the sliding plate 53 is located below, with the upward movement of the sliding plate 53, when the sliding plate 53 moves above the through hole 6, the sliding plate 53 will isolate the oil storage warehouse 5 from the through hole 6, and the extrusion action is generated to the oil outlet 54, when the oil outlet 54 is pressed by the lubricating oil, the upper part will be elastically deformed outward, so that the lubricating oil can flow out smoothly, and flow into the bearing 3 through the connecting hole 7 on the inner side of the bearing 3, the bearing 3 is effectively lubricated, the friction coefficient inside the bearing 3 is reduced, the wear is reduced, the flexible rotation of the guide wheel 2 is ensured, and the good working state of the saw chain guide plate is maintained.
[0035] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A guide bar for a saw chain with a replaceable guide wheel, characterized in that The guide plate (1) is provided with a guide wheel (2) on the front side, the guide wheel (2) is provided with a bearing (3) on the inner side, the bearing (3) is provided with a dismounting mechanism on the inner side, the dismounting mechanism comprises a connecting assembly and an auxiliary assembly, the connecting assembly comprises a mounting piece (41) and a sleeve piece (42), the mounting piece (41) and the sleeve piece (42) are inserted into each other and connected and fastened by a fastening bolt (43), the inner wall of the sleeve piece (42) is provided with a reset spring (45) and a limiting piece (44) in the radial direction, a limiting groove (46) is formed in the circumferential direction of the end of the fastening bolt (43), and the end of the limiting piece (44) is matched with the limiting groove (46).
2. A guide plate for a saw chain according to claim 1, characterized in that: The mounting piece (41) is provided with a supporting tube matched with the bearing inner hole, the axis of the supporting tube is provided with a tube hole, the sleeve piece (42) is provided with a plug tube inserted into the tube hole, and the axis of the plug tube is provided with a screw hole matched with the fastening bolt (43).
3. A guide plate for a saw chain according to claim 1, characterized in that: The limiting piece (44) is located at the position of the corresponding screw hole bottom of the sleeve piece (42), and the end of the limiting piece (44) towards the axis of the screw hole is a ball head end.
4. A guide bar guide with replaceable guide wheel according to claim 1 or 3, characterized in that: The limiting piece (44) and the reset spring (45) are provided with multiple groups, and the multiple groups of the limiting piece (44) and the reset spring (45) are uniformly distributed with the center point of the sleeve piece (42) as the center.
5. A guide bar guide with a replaceable guide wheel according to claim 1 or 2, characterized in that: Both sides of the guide plate are provided with clamping grooves (47), the clamping grooves are circular, the circumferences are provided with circular protrusions, the end of the mounting piece (41) is an end plate matched with the corresponding clamping groove, the end plate of the mounting piece is circular, the circumference of the end plate of the mounting piece is provided with a circular recess matched with the circular protrusion, the end of the sleeve piece (42) is an end plate matched with the corresponding clamping groove, the end plate of the sleeve piece is circular, and the circumference of the end plate of the sleeve piece is provided with a circular recess matched with the circular protrusion.
6. A guide plate for a saw chain having replaceable guide wheels according to claim 1, characterized in that: The inner wall of the mounting piece (41) is provided with an oil storage bin (5), the inner wall of the mounting piece (41) is provided with a lubricating assembly, the lubricating assembly comprises a cover (51), the cover (51) is threadedly connected to the right inner wall of the mounting piece (41), the inner wall of the mounting piece (41) is provided with an air bag (52), and the upper part of the air bag (52) is fixedly connected with a sliding plate (53).
7. A guide plate for a saw chain according to claim 6, characterized in that: The inner wall of the mounting piece (41) and the oil storage bin (5) are connected with each other through a through hole (6), the through hole (6) is formed in the inner wall of the mounting piece (41), and the inner side of the mounting piece (41) is fixedly connected with an oil outlet piece (54).
8. A guide plate for a saw chain according to claim 7, characterized in that: The oil outlet piece (54) is provided in a conical shape.
9. A guide plate for a saw chain according to claim 7, characterized in that: The oil outlet piece (54) is made of rubber.