Saw wheel adjusting device and band saw machine
By using the positioning adjustment seat and adjustment mechanism of the saw wheel adjustment device, the problem of inaccurate wood cutting thickness caused by vibration of the band saw machine is solved, realizing efficient wood cutting and improving processing yield and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 柯九生
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-14
AI Technical Summary
Existing band saws cause the saw wheel bushing to move due to vibration when cutting wood, resulting in the wood cutting thickness not meeting the preset requirements and reducing the processing yield.
The saw wheel adjustment device, through the cooperation of the positioning adjustment seat and the adjustment mechanism, realizes direct-drive linear adjustment, simplifies the structure, facilitates the position adjustment of the positioning adjustment seat, and prevents position changes caused by vibration through the locking mechanism.
It improved the yield of wood cutting, simplified the adjustment process, shortened the adjustment time, and increased production efficiency.
Smart Images
Figure CN224489409U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of band saw technology, and in particular to a saw wheel adjustment device and a band saw. Background Technology
[0002] A band saw is a sawing machine that uses a ring-shaped, endless band saw blade as the saw tool, which rotates continuously in the same direction around a saw wheel to cut wood. Its main purpose is woodworking sawing operations, where the cutting operation of the band saw brings the wood to the required production specifications. For example, Chinese utility model patent CN214644363U discloses a multi-wheel band saw, in which rotating the first gear shaft causes the first rack to move axially. The movement of the first rack drives the corresponding drive saw wheel bushing to move, thus adjusting the central axis of each drive saw wheel in the horizontal direction.
[0003] However, the inventors discovered in actual production that the band saw vibrates as a whole when cutting wood, and this vibration causes the gear shaft and rack to move, which in turn causes the saw wheel bushing to move. As a result, the thickness of the wood cut cannot reach the preset thickness, which seriously limits the wood processing yield.
[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content
[0005] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a saw wheel adjustment device, which effectively solves the technical defect of low wood processing yield in the existing band saw machine, which is caused by the use of gear shaft and rack to drive the saw wheel bushing.
[0006] This application provides a saw wheel adjustment device, including...
[0007] Saw wheel shaft core;
[0008] The positioning and adjusting seat has an adjusting square hole for inserting the saw wheel shaft core; the positioning and adjusting seat can move back and forth and left and right relative to the saw wheel shaft core; and,
[0009] The band saw wheel is rotatably mounted on the positioning and adjusting seat via bearings;
[0010] The positioning adjustment seat has a first adjustment mechanism on its front surface that can move back and forth and abut against the front surface of the saw wheel shaft core, and a second adjustment mechanism on its rear surface that can move back and forth and abut against the rear surface of the saw wheel shaft core.
[0011] When the first adjusting mechanism moves forward, the second adjusting mechanism can move forward to abut against the saw wheel shaft and drive the adjusting seat to move backward, so that the first adjusting mechanism abuts against the saw wheel shaft to lock the positioning adjusting seat; or, when the second adjusting mechanism moves backward, the first adjusting mechanism moves backward to abut against the saw wheel shaft and drives the positioning adjusting seat to move forward, so that the second adjusting mechanism abuts against the saw wheel shaft to lock the positioning adjusting seat.
[0012] The beneficial effect of the saw wheel adjustment device provided in this application is that when it is necessary to adjust the band saw wheel to move backward, firstly, the first adjustment mechanism is driven to move forward, then the second adjustment mechanism is driven to move forward and abut against the saw wheel shaft core and the adjustment seat is driven to move backward, and finally the first adjustment mechanism abuts against the saw wheel shaft core, thereby locking the positioning adjustment seat through the first adjustment mechanism and the second adjustment mechanism.
[0013] When it is necessary to adjust the band saw wheel to move forward, first drive the second adjustment mechanism to move backward, then drive the first adjustment mechanism to move backward against the saw wheel shaft core and drive the positioning adjustment seat to move forward, and finally let the second adjustment mechanism against the saw wheel shaft core to lock the positioning adjustment seat through the first adjustment mechanism and the second adjustment mechanism.
[0014] Compared with existing technologies, firstly, by simply driving the first and second adjustment mechanisms to move back and forth, the positioning adjustment seat can be adjusted linearly in a direct-drive manner, eliminating the need to rotate the gear shaft after meshing with the gears to move the positioning adjustment seat. This not only simplifies the overall structure of the adjustment mechanism but also makes it easier for operators to adjust the position of the positioning adjustment seat, making the adjustment operation more convenient, thereby shortening the adjustment time and improving production efficiency.
[0015] Secondly, after the position of the positioning adjustment seat is adjusted, the positioning adjustment seat can be locked by the first adjustment mechanism and the second adjustment mechanism to prevent the positioning adjustment seat from shifting due to vibration during the band saw cutting process, thereby ensuring that the position of the band saw wheel is not changed, so that the board can be cut according to the preset width, thus improving the board cutting yield.
[0016] As a preferred embodiment, the front surface of the positioning adjustment seat is provided with a first screw hole that penetrates its inner and outer surfaces, and the rear surface is provided with a second screw hole that penetrates its inner and outer surfaces.
[0017] The first adjustment mechanism is the first bolt, which is rotatably installed in the first screw hole; the second adjustment mechanism is the second bolt, which is rotatably installed in the second screw hole.
[0018] As a preferred embodiment, the first bolt can rotate along the first screw hole and move backward into the adjusting square hole, and the second bolt can rotate along the second screw hole and move forward into the adjusting square hole.
[0019] As a preferred embodiment, the front surface of the positioning adjustment seat is provided with a first through hole penetrating its inner and outer surfaces, and the rear surface is provided with a second through hole penetrating its inner and outer surfaces;
[0020] The first adjustment mechanism is a first cylinder, whose telescopic rod can extend backward through the first through hole and into the adjustment square hole; the second adjustment mechanism is a second cylinder, whose telescopic rod can extend forward through the second through hole and into the adjustment square hole.
[0021] As a preferred option, the front-to-back width of the adjustment square hole is greater than the front-to-back width of the saw wheel shaft.
[0022] As a preferred option, the upper and lower surfaces of the adjustable square hole are fitted with the upper and lower surfaces of the saw wheel shaft core.
[0023] As a preferred embodiment, an eccentric inner sleeve is detachably mounted on the outer surface of the positioning adjustment seat, and the band saw wheel is rotatably mounted on the outer surface of the eccentric inner sleeve via a bearing.
[0024] As a preferred embodiment, the upper surface of the saw wheel shaft core is provided with a first concave cavity, and a hydraulic tensioning mechanism is installed in the first concave cavity. The hydraulic tensioning mechanism has a hydraulic telescopic rod; the positioning adjustment seat is provided with a first clearance through hole for the hydraulic telescopic rod to pass through and extend upward to abut against the eccentric inner sleeve; or,
[0025] The lower surface of the saw wheel shaft core is provided with a first concave cavity, and a hydraulic tensioning mechanism is installed in the first concave cavity. The hydraulic tensioning mechanism has a hydraulic telescopic rod. The positioning adjustment seat is provided with a first clearance through hole for the hydraulic telescopic rod to pass through and extend downward to abut against the eccentric inner sleeve.
[0026] As a preferred embodiment, there are at least two positioning adjustment seats, and the two positioning adjustment seats are installed one by one along the axial extension direction of the saw wheel shaft core;
[0027] Each positioning adjustment seat is equipped with a band saw wheel via a bearing; the two band saw wheels may have the same or different diameters.
[0028] This application also provides a band saw machine equipped with a saw wheel adjustment device.
[0029] The beneficial effects of the band saw provided in this application are that, compared with the prior art, by installing a saw wheel adjustment device, the displacement of the positioning adjustment seat can be directly adjusted linearly by simply driving the first adjustment mechanism and the second adjustment mechanism to move back and forth, without having to rotate the gear shaft to drive the positioning adjustment seat to move after meshing with the gear shaft. This not only simplifies the overall structure of the adjustment mechanism, but also makes it easier for operators to adjust the position of the positioning adjustment seat, making the adjustment operation more convenient, thereby shortening the adjustment time and improving production efficiency.
[0030] Meanwhile, the positioning adjustment seat is locked by the first and second adjustment mechanisms to prevent the positioning adjustment seat from shifting due to vibration during the band saw cutting process, thereby ensuring that the position of the band saw wheel remains unchanged and that the board can be cut according to the preset width, thus improving the board cutting yield. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a three-dimensional structural schematic diagram of the saw wheel adjustment device provided in the embodiments of this application;
[0033] Figure 2 yes Figure 1 A three-dimensional sectional view of the saw wheel adjustment device shown.
[0034] Figure 3 yes Figure 1 A radial perspective sectional view of the saw wheel adjustment device shown.
[0035] Figure 4 yes Figure 3 The front view of the saw wheel adjustment device shown.
[0036] The following are the labeling elements in the figure:
[0037] 100. Saw wheel adjustment device;
[0038] 10. Saw wheel shaft core; 11. First concave cavity; 12. Hydraulic tensioning mechanism; 121. Hydraulic telescopic rod;
[0039] 20. Positioning and adjusting seat; 21. Adjusting square hole; 22. First bolt; 23. Second bolt; 24. First screw hole; 25. Second screw hole; 26. Eccentric inner sleeve; 27. First clearance through hole;
[0040] 30. Band saw wheel; 31. First wheel body; 32. Second wheel body; 33. Third wheel body; 34. Fourth wheel body;
[0041] 40. Bearings. Detailed Implementation
[0042] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0044] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0045] 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 application, "multiple" means two or more, unless otherwise explicitly specified.
[0046] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0047] Please refer to the following: Figures 1 to 4 The saw wheel adjustment device 100 provided in the embodiments of this application will now be described. The saw wheel adjustment device 100 includes a saw wheel shaft core 10, a positioning adjustment seat 20 and a band saw wheel 30.
[0048] The cross-section of the saw wheel shaft core 10 is square, and the saw wheel shaft core 10 extends in the left and right directions. The positioning adjustment seat 20 has an adjustment square hole 21, which passes through the left and right sides of the positioning adjustment seat 20. The saw wheel shaft core 10 can be inserted into the adjustment square hole 21 so that the positioning adjustment seat 20 can be sleeved on the saw wheel shaft core 10 for support. The positioning adjustment seat 20 can move back and forth and left and right relative to the saw wheel shaft core 10. The band saw wheel 30 is rotatably mounted on the positioning adjustment seat 20 through the bearing 40. The band saw wheel 30 is used to drive the band saw to move to cut wood. By adjusting the position of the positioning adjustment seat 20 in the front and back directions, the position of the band saw wheel 30 can be adjusted to cut wood of different thicknesses. The front surface of the positioning adjustment seat 20 is provided with a first adjustment mechanism that can move back and forth and abut against the front surface of the saw wheel shaft core 10, and the rear surface of the positioning adjustment seat 20 is provided with a second adjustment mechanism that can move back and forth and abut against the rear surface of the saw wheel shaft core 10. When the first adjustment mechanism moves forward, the second adjustment mechanism can move forward and abut against the saw wheel shaft core 10 and drive the adjustment seat to move backward, so that the first adjustment mechanism abuts against the saw wheel shaft core 10 to lock the positioning adjustment seat 20; or, when the second adjustment mechanism moves backward, the first adjustment mechanism moves backward and abuts against the saw wheel shaft core 10 and drives the positioning adjustment seat 20 to move forward, so that the second adjustment mechanism abuts against the saw wheel shaft core 10 to lock the positioning adjustment seat 20.
[0049] Specifically, when it is necessary to adjust the band saw wheel 30 to move backward, firstly, the first adjusting mechanism is driven to move forward, then the second adjusting mechanism is driven to move forward and abut against the saw wheel shaft 10, and the adjusting seat is driven to move backward. Finally, the first adjusting mechanism abuts against the saw wheel shaft 10, and the positioning adjusting seat 20 is locked by the first adjusting mechanism and the second adjusting mechanism. When it is necessary to adjust the band saw wheel 30 to move forward, firstly, the second adjusting mechanism is driven to move backward, then the first adjusting mechanism is driven to move backward and abut against the saw wheel shaft 10, and the positioning adjusting seat 20 is driven to move forward. Finally, the second adjusting mechanism abuts against the saw wheel shaft 10, and the positioning adjusting seat 20 is locked by the first adjusting mechanism and the second adjusting mechanism.
[0050] With this structure, firstly, the positioning adjustment seat 20 can be directly adjusted linearly by simply driving the first and second adjustment mechanisms to move back and forth, without needing to rotate the gear shaft to move the positioning adjustment seat 20. This not only simplifies the overall structure of the adjustment mechanism, but also makes it easier for operators to adjust the position of the positioning adjustment seat 20, making the adjustment operation more convenient, thereby shortening the adjustment time and improving production efficiency.
[0051] Secondly, after the position of the positioning adjustment seat 20 is adjusted, the positioning adjustment seat 20 can be locked by the first adjustment mechanism and the second adjustment mechanism to prevent the positioning adjustment seat 20 from shifting due to vibration during the band saw cutting process, thereby ensuring that the position of the band saw wheel 30 remains unchanged, so that the board can be cut according to the preset width, thus improving the board cutting yield.
[0052] In some embodiments, the positioning adjustment seat 20 has a first screw hole 24 penetrating its inner and outer surfaces on its front surface and a second screw hole 25 penetrating its inner and outer surfaces on its rear surface; the first adjustment mechanism is a first bolt 22, which is rotatably installed in the first screw hole 24; the second adjustment mechanism is a second bolt 23, which is rotatably installed in the second screw hole 25.
[0053] Specifically, the first bolt 22 can rotate along the first screw hole 24 and move backward into the adjusting square hole 21, and the second bolt 23 can rotate along the second screw hole 25 and move forward into the adjusting square hole 21.
[0054] For example, when the band saw wheel 30 needs to move backward a first distance relative to the saw wheel shaft 10, the first bolt 22 is first rotated and moved forward a first distance; then the second bolt 23 is rotated and moved forward, and the second bolt 23 moves forward and abuts against the rear surface of the saw wheel shaft 10 to drive the positioning adjustment seat 20 to move backward; after the positioning adjustment seat 20 has moved backward a first distance, the first bolt 22 abuts against the front surface of the saw wheel shaft 10, and the first bolt 22 and the second bolt 23 generate a resisting force on the saw wheel shaft 10 to lock the positioning adjustment seat 20.
[0055] When the band saw wheel 30 needs to move forward a first distance relative to the saw wheel shaft 10, the second bolt 23 is first rotated and moved backward a first distance; then the first bolt 22 is rotated and moved backward, and the first bolt 22 moves backward to abut against the front surface of the saw wheel shaft 10 to drive the positioning adjustment seat 20 to move forward; after the positioning adjustment seat 20 moves forward a first distance, the second bolt 23 abuts against the rear surface of the saw wheel shaft 10, and the first bolt 22 and the second bolt 23 generate a resisting force on the saw wheel shaft 10 to lock the positioning adjustment seat 20.
[0056] Therefore, the forward and backward displacement of the positioning adjustment seat 20 can be completed simply by rotating the first bolt 22 and the second bolt 23, and the positioning adjustment seat 20 can be locked by the first bolt 22 and the second bolt 23. Compared with the gear shaft and rack and pinion drive method in the traditional technology, the structure of the first bolt 22 and the second bolt 23 can not only simplify the overall structure of the adjustment mechanism, but also make it easier for operators to adjust the position of the positioning adjustment seat 20. This makes the adjustment operation more convenient, thereby shortening the adjustment time and improving the production efficiency.
[0057] In other embodiments, the first adjusting mechanism is a first cylinder (not shown in the figure), and the second adjusting mechanism is a second cylinder (not shown in the figure).
[0058] Specifically, the positioning adjustment seat 20 has a first through hole (not shown in the figure) on its front surface and a second through hole (not shown in the figure) on its rear surface; the telescopic rod of the first cylinder can extend backward through the first through hole into the adjustment square hole 21; the second adjustment mechanism is a second cylinder, and the telescopic rod of the second cylinder can extend forward through the second through hole into the adjustment square hole 21. By setting the first cylinder and the second cylinder to replace the first bolt 22 and the second bolt 23, an automated adjustment effect is achieved.
[0059] In some embodiments, the front-to-back width of the adjusting square hole 21 is greater than the front-to-back width of the saw wheel shaft core 10, and the upper and lower surfaces of the adjusting square hole 21 are fitted with the upper and lower surfaces of the saw wheel shaft core 10 with clearance. An eccentric inner sleeve 26 is detachably mounted on the outer surface of the positioning adjustment seat 20, and the saw wheel 30 is rotatably mounted on the outer surface of the eccentric inner sleeve 26 via a bearing 40.
[0060] Specifically, the upper surface of the saw wheel shaft core 10 is provided with a first cavity 11, and a hydraulic tensioning mechanism 12 is installed in the first cavity 11. The hydraulic tensioning mechanism 12 has a hydraulic telescopic rod 121. The positioning adjustment seat 20 is provided with a first clearance through hole 27 for the hydraulic telescopic rod 121 to pass through and extend upward to abut against the eccentric inner sleeve 26. Alternatively, the lower surface of the saw wheel shaft core 10 is provided with a first cavity 11, and a hydraulic tensioning mechanism 12 is installed in the first cavity 11. The hydraulic tensioning mechanism 12 has a hydraulic telescopic rod 121. The positioning adjustment seat 20 is provided with a first clearance through hole 27 for the hydraulic telescopic rod 121 to pass through and extend downward to abut against the eccentric inner sleeve 26.
[0061] For example, after the first adjustment mechanism and the second adjustment mechanism have completed the adjustment of the position of the positioning adjustment seat 20 in the front and rear directions, the hydraulic tensioning mechanism 12 is activated to drive the hydraulic telescopic rod 121 to move and press against the surface of the eccentric inner sleeve 26, thereby limiting the position of the positioning adjustment seat 20 in the left and right directions.
[0062] It is understandable that the first adjustment mechanism and the second adjustment mechanism can drive the positioning adjustment seat 20 to move in the front and back direction, while the hydraulic telescopic rod 121 of the hydraulic tensioning mechanism 12 moves up or down to press against the surface of the eccentric inner sleeve 26.
[0063] In other embodiments, there are at least two positioning adjustment seats 20, which are installed one by one along the axial extension direction of the saw wheel shaft core 10; each positioning adjustment seat 20 is equipped with a band saw wheel 30 through a bearing 40, and the two band saw wheels 30 may have the same or different diameters.
[0064] For example, the band saw wheel 30 includes a first wheel body 31, a second wheel body 32, a third wheel body 33, and a fourth wheel body 34. Each of the first wheel body 31, the second wheel body 32, the third wheel body 33, and the fourth wheel body 34 is correspondingly equipped with a positioning adjustment seat 20 and a hydraulic tensioning mechanism 12, etc. The first wheel body 31, the second wheel body 32, the third wheel body 33, and the fourth wheel body 34 are mounted on the saw wheel shaft core 10 through the positioning adjustment seat 20 and are arranged sequentially from left to right along the axial direction of the saw wheel shaft core 10. The diameters of the first wheel body 31, the second wheel body 32, the third wheel body 33, and the fourth wheel body 34 gradually decrease or gradually increase.
[0065] In some embodiments, a band saw is also provided, which is equipped with two saw wheel adjusting devices 100. The two saw wheel adjusting devices 100 are set with vertical or horizontal spacing. One of the saw wheel adjusting devices 100 has multiple band saw wheels 30 as driving wheels, and the other saw wheel adjusting device 100 has multiple band saw wheels 30 as driven wheels. By fitting a band saw between the two band saw wheels 30 that are on the same straight line, wood cutting can be achieved.
[0066] Specifically, by installing the saw wheel adjustment device 100, the positioning adjustment seat 20 can be directly adjusted linearly by simply driving the first and second adjustment mechanisms to move back and forth. This eliminates the need to rotate the gear shaft after meshing with the gear shaft to move the positioning adjustment seat 20. This not only simplifies the overall structure of the adjustment mechanism but also makes it easier for operators to adjust the position of the positioning adjustment seat 20, making the adjustment operation more convenient, thus shortening the adjustment time and improving production efficiency. At the same time, by locking the positioning adjustment seat 20 through the first and second adjustment mechanisms, the positioning adjustment seat 20 is prevented from shifting due to vibration during the band saw cutting process, thereby ensuring that the position of the band saw wheel 30 remains unchanged. This allows the board to be cut according to the preset width, improving the board cutting yield.
[0067] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.
Claims
1. A saw wheel adjusting device, comprising: Saw wheel shaft core (10); The positioning adjustment seat (20) has an adjustment square hole (21) for inserting the saw wheel shaft core (10); the positioning adjustment seat (20) can move back and forth and left and right relative to the saw wheel shaft core (10); and, The band saw wheel (30) is rotatably mounted on the positioning adjustment seat (20) via a bearing (40); Its features are, The front surface of the positioning adjustment seat (20) is provided with a first adjustment mechanism that can move back and forth and abut against the front surface of the saw wheel shaft core (10), and the rear surface of the positioning adjustment seat (20) is provided with a second adjustment mechanism that can move back and forth and abut against the rear surface of the saw wheel shaft core (10). When the first adjustment mechanism moves forward, the second adjustment mechanism can move forward to abut against the saw wheel shaft core (10) and drive the adjustment seat to move backward, so that the first adjustment mechanism abuts against the saw wheel shaft core (10) to lock the positioning adjustment seat (20); or, when the second adjustment mechanism moves backward, the first adjustment mechanism moves backward to abut against the saw wheel shaft core (10) and drives the positioning adjustment seat (20) to move forward, so that the second adjustment mechanism abuts against the saw wheel shaft core (10) to lock the positioning adjustment seat (20).
2. The saw wheel adjusting device according to claim 1, characterized in that, The positioning adjustment seat (20) has a first screw hole (24) penetrating its inner and outer surfaces on its front surface and a second screw hole (25) penetrating its inner and outer surfaces on its rear surface. The first adjustment mechanism is the first bolt (22), which is rotatably installed in the first screw hole (24); the second adjustment mechanism is the second bolt (23), which is rotatably installed in the second screw hole (25).
3. The saw wheel adjusting device according to claim 2, characterized in that, The first bolt (22) can rotate along the first screw hole (24) and move backward into the adjustment square hole (21), and the second bolt (23) can rotate along the second screw hole (25) and move forward into the adjustment square hole (21).
4. The saw wheel adjusting device according to claim 1, characterized in that, The positioning adjustment seat (20) has a first through hole on its front surface that penetrates its inner and outer surfaces, and a second through hole on its rear surface that penetrates its inner and outer surfaces. The first adjustment mechanism is the first cylinder, and the telescopic rod of the first cylinder can extend backward through the first through hole into the adjustment square hole (21); The second adjustment mechanism is the second cylinder, and the telescopic rod of the second cylinder can pass forward through the second through hole and extend into the adjustment square hole (21).
5. The saw wheel adjusting device according to any one of claims 1-4, characterized in that, The front-to-back width of the adjustment square hole (21) is greater than the front-to-back width of the saw wheel shaft core (10).
6. The saw wheel adjusting device according to claim 5, characterized in that, Adjust the upper and lower surfaces of the square hole (21) and the upper and lower surfaces of the saw wheel shaft core (10) to fit together.
7. The saw wheel adjusting device according to claim 1 or 6, characterized in that, The outer surface of the positioning adjustment seat (20) is detachably mounted with an eccentric inner sleeve (26), and the band saw wheel (30) is rotatably mounted on the outer surface of the eccentric inner sleeve (26) via a bearing (40).
8. The saw wheel adjusting device according to claim 7, characterized in that, The upper surface of the saw wheel shaft core (10) is provided with a first cavity (11), and a hydraulic tensioning mechanism (12) is installed in the first cavity (11). The hydraulic tensioning mechanism (12) has a hydraulic telescopic rod (121); the positioning adjustment seat (20) is provided with a first clearance through hole (27) through which the hydraulic telescopic rod (121) passes and extends upward to abut against the eccentric inner sleeve (26); or, The lower surface of the saw wheel shaft core (10) is provided with a first cavity (11), and a hydraulic tensioning mechanism (12) is installed in the first cavity (11). The hydraulic tensioning mechanism (12) has a hydraulic telescopic rod (121). The positioning adjustment seat (20) is provided with a first clearance through hole (27) for the hydraulic telescopic rod (121) to pass through and extend downward to abut against the eccentric inner sleeve (26).
9. The saw wheel adjusting device according to claim 1, 2, 3, 4, 6, or 8, characterized in that, There are at least two positioning adjustment seats (20), and the two positioning adjustment seats (20) are installed one by one along the axial extension direction of the saw wheel shaft core (10); Each positioning adjustment seat (20) is equipped with a band saw wheel (30) via a bearing (40), and the two band saw wheels (30) may have the same or different diameters.
10. A band saw, characterized in that, The saw wheel adjustment device (100) as described in any one of claims 1-9 is installed.