Adjustable woodworker's saw guard

CN224826967UActive Publication Date: 2026-10-09CHINA RAILWAY FIRST GROUP CO LTD +2
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Patent Information

Application Number
CN202522315624.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2026-10-09
Estimated Expiration
2035-10-31

AI Technical Summary

Technical Problem

[0004]本实用新型的目的在于提供一种可调节式木工锯防护罩,以解决上述背景技术中提出的容易传导振动导致支架松动等问题

Benefits of technology

[0015]1.本实用新型通过底座直接固定在地面上的设计,有效避免了因支架直接固定在锯床台面传导振动导致结构松动的问题,提高了防护的可靠性。采用模块化设计,各部件间通过滑套插接和螺栓固定,无需焊接,使得安装与拆卸极为简便。连接部连接的防护罩本体使得可根据不同木工锯尺寸更换不同大小的防护罩本体,这样不仅降低了一次性投入成本,可以快速在不同项目场地、不同设备之间进行周转使用,实现重复利用。

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Abstract

The utility model discloses an adjustable woodworking saw protection cover belongs to woodworking machinery safety guard technical field, including protection cover main part, support, base and four sets of adjusting parts. Protection cover main part includes connecting portion and protection portion, and support is constituted by connecting component, the column of metal square pipe and cross bar, and through the stability of inclined bracing bar enhancement, four sets of adjusting parts all are composed of sliding sleeve and fastening bolt, through the adjusting part of setting up in the connecting place between the bar piece, realized the multistage flexible adjustment of protection cover main part in horizontal and vertical direction. The utility model discloses through base and be directly fixed to the ground, can according to the size of board material and cutting demand accurate coverage saw blade dangerous area, effectively eliminates the blind area of protection, significantly improves the operation safety, and its structure is stable, and the anti -vibration is good, and adopts the modular design, and the installation is simple and easy to remove, is convenient in different station turn -round use, and the practicality is strong.
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Description

Technical Field

[0001] This utility model relates to the technical field of safety protection devices for woodworking machinery, specifically to an adjustable protective cover for a woodworking saw. Background Technology

[0002] During project construction, stationary circular saws are essential equipment for cutting boards. Protective covers are crucial components that protect operators from injury caused by the saw blade. Operator safety largely depends on the effectiveness of these protective covers. Currently, most woodworking saw protective covers on the market are of a stationary type.

[0003] Traditional protective covers are typically fixed to the workbench during cutting operations, which can easily transmit vibrations, potentially causing the support to loosen and affecting the reliability of the protection. Furthermore, these covers often fail to effectively cover the dangerous area of ​​the saw blade and can sometimes obstruct the operator's view, creating blind spots that interfere with their judgment of the cutting line and seriously threaten their safety. They can also restrict the feeding angle and movement space of the sheet metal, leading to inconvenience and reduced construction efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable woodworking saw protective cover to solve the problems mentioned in the background art, such as easy transmission of vibration leading to loosening of the support.

[0005] To achieve the above objectives, this utility model provides an adjustable woodworking saw protective cover, including a protective cover body, a support, a base, and adjusting components. The protective cover body includes a connecting part and a protective part. One end of the connecting part is fixedly connected to the top of the protective part, which covers the dangerous area of ​​the saw blade. The support includes a column and a crossbar. The crossbar is located at one end of the column, and a connecting part is located at one end of the crossbar. The base includes a base guide rod and a base anti-tilting component. The base anti-tilting component is fixedly located at one end of the base guide rod, and the column is mounted on the base guide rod. The adjusting components include a first adjusting component and a second adjusting component. The first adjusting component includes a first transverse sliding sleeve and a first fastener. The side of the first transverse sliding sleeve is fixedly connected to the end of the column near the base guide rod, and the length direction of the first transverse sliding sleeve is perpendicular to the length direction of the column. The base guide rod passes through the first transverse sliding sleeve. The column is slidably connected to the base guide rod via the first transverse sliding sleeve. The first fastener is installed on the first transverse sliding sleeve and is used to limit the relative movement between the column and the base guide rod. The second adjusting component includes a vertical sliding sleeve and a second fastener. The side of the vertical sliding sleeve is fixedly connected to the end of the crossbar near the connecting part, and the length direction of the vertical sliding sleeve is parallel to the length direction of the column. The connecting part passes through the vertical sliding sleeve, and the protective part is located on the side of the crossbar near the base. The crossbar is slidably connected to the connecting part through the vertical sliding sleeve. A second fastener is installed on the vertical sliding sleeve and is used to limit the relative movement between the crossbar and the connecting part.

[0006] Furthermore, the adjusting component also includes a third adjusting component. The third adjusting component includes a second transverse sliding sleeve and a third fastener. The side of the second transverse sliding sleeve is fixedly connected to the end of the column near the crossbar, and the length direction of the second transverse sliding sleeve is parallel to the length direction of the first transverse sliding sleeve. The crossbar passes through the second transverse sliding sleeve. The column is slidably connected to the crossbar via the second transverse sliding sleeve, and the third fastener is installed on the second transverse sliding sleeve and is used to limit the relative movement between the column and the crossbar.

[0007] Furthermore, the support also includes a diagonal brace, one end of which is fixedly connected to the area of ​​the column near the first transverse sliding sleeve, and the other end of which extends to the bottom of the crossbar and is used to provide additional support for the crossbar.

[0008] Furthermore, the fourth adjusting component includes a third transverse sliding sleeve and a fourth fastener. The third transverse sliding sleeve is fixedly connected to the end of the diagonal brace near the crossbar, and the crossbar can pass through both the second and third transverse sliding sleeves simultaneously. The diagonal brace is slidably connected to the crossbar via the third transverse sliding sleeve, and the fourth fastener is installed on the third transverse sliding sleeve and is used to limit the relative movement between the diagonal brace and the crossbar.

[0009] Furthermore, the protective section has a semi-circular structure and is entirely made of steel plates.

[0010] Furthermore, the first fastener, the second fastener, the third fastener, and the fourth fastener are all bolts, and the first transverse sliding sleeve, the second transverse sliding sleeve, the third transverse sliding sleeve, and the vertical sliding sleeve are all provided with threaded holes for threaded connection with the corresponding bolts.

[0011] Furthermore, the base anti-tilt component is a base anti-tilt rod, one end of the base guide rod is fixedly connected to the middle of the base anti-tilt rod, the base anti-tilt rod and the base guide rod are perpendicular to each other, and the base anti-tilt rod and the connecting part are located on the same side of the column.

[0012] Furthermore, the connecting parts, uprights, crossbars, base guide rods, and base anti-tilt rods are all made of metal square tubing.

[0013] Furthermore, the first transverse sliding sleeve, the second transverse sliding sleeve, the third transverse sliding sleeve, and the vertical sliding sleeve are all hollow tubular structures. The inner contour of the hollow tubular structure matches the outer contour of the metal square tube, allowing relative sliding to occur between the hollow tubular structure and the metal square tube rod inserted therein.

[0014] This utility model has the following advantages over the prior art:

[0015] 1. This utility model, through its design of directly fixing the base to the ground, effectively avoids the structural loosening problem caused by vibration transmitted from a bracket directly fixed to the saw table, thus improving the reliability of the protection. Adopting a modular design, the components are fixed together by sliding sleeves and bolts, eliminating the need for welding and making installation and disassembly extremely simple. The protective cover body connected to the connecting part allows for the replacement of different sized protective cover bodies according to different woodworking saw sizes. This not only reduces the initial investment cost but also allows for rapid reuse and rotation between different project sites and different equipment.

[0016] 2. This utility model, through the cooperation of a sliding sleeve and fasteners, allows operators to flexibly adjust the position of the protective cover in both horizontal and vertical directions according to the size and shape of the material to be cut. This ensures that regardless of the size of the work being performed, the protective cover accurately and completely covers the dangerous area of ​​the saw blade, eliminating the blind spots present in traditional fixed protective covers, reducing the risk of accidental contact with the saw blade by operators, and improving operational safety.

[0017] 3. This utility model uses a protective cover body made of steel plate, as well as a support and base made of metal square tube structure, which is sturdy and durable, not easy to wear and deform. The added diagonal bracing effectively enhances the overall stability of the support and its resistance to deformation and vibration, and the service life is greatly extended. Its adjustable feature makes it compatible with a variety of woodworking saws and complex construction needs, and its application range is wide. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model after disassembly;

[0020] Figure 3 This is a schematic diagram showing the connection between the column and the base of this utility model;

[0021] Figure 4 This is a schematic diagram showing the connection between the crossbar and the main body of the protective cover of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 2—Staff; 21—Column; 22—Horizontal bar; 23—Diagonal brace; 3—Base; 31—Base guide rod; 32—Base anti-tilt bar; 4—Adjusting components; 5—First adjusting component; 51—First transverse sliding sleeve; 52—First fastener; 6—Second adjusting component; 61—Vertical sliding sleeve; 62—Second fastener; 7—Third adjusting component; 71—Second transverse sliding sleeve; 72—Third fastener; 8—Fourth adjusting component; 81—Third transverse sliding sleeve; 82—Fourth fastener. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] like Figures 1 to 4 As shown, an embodiment of this utility model provides an adjustable woodworking saw protective cover, including a protective cover body 1, a support 2, a base 3, and an adjustment component 4. The protective cover body 1 includes a connecting part 11 and a protective part 12. One end of the connecting part 11 is fixedly connected to the top of the protective part 12, which covers the dangerous area of ​​the saw blade. The support 2 includes a column 21 and a crossbar 22. The crossbar 22 is disposed on one end of the column 21, and the connecting part 11 is disposed on one end of the crossbar 22. The base 3 includes a base guide rod 31 and a base anti-tilting component. The base anti-tilting component is fixedly disposed on one end of the base guide rod 31, and the column 21 is disposed on the base guide rod 31. The adjustment component 4 includes a first adjustment component 5 and a second adjustment component 6. The column 21 is slidably connected to the base guide rod 31 via the first adjustment component 5, and the crossbar 22 is slidably connected to the connecting part 11 via the second adjustment component 6, achieving position adjustment in the horizontal and vertical directions.

[0026] In this embodiment, the adjustable woodworking saw protective cover structure achieves flexible adjustment of the protective cover in both horizontal and vertical directions through the coordinated action of the protective cover body 1, bracket 2, base 3, and adjustment components 4, adapting to different sawing conditions. The protective cover body 1 is responsible for covering the dangerous area of ​​the saw blade, ensuring operational safety; the bracket 2 serves as an intermediate support, connecting the protective cover body 1 and the base 3; the base 3 provides a stable mounting foundation through the base guide rod 31. The sliding sleeves and fasteners in each adjustment component 4 allow for easy adjustment and reliable fixation. The first adjustment component 5 and the second adjustment component 6 allow the bracket 2 to slide horizontally along the base guide rod 31, while the protective cover body 1 can rise and fall in the vertical sliding sleeve 61 through the connecting part 11, achieving multi-directional adjustment. This allows the protective cover to adapt to different sawing scenarios, such as changes in board thickness and width, ensuring that the protective cover body 1 always effectively covers the dangerous area without obstructing vision or material feeding, improving safety and applicability. The fasteners are simple and reliable, resisting vibration after fixing, and the overall structure is compact, easy to install and reuse, reducing costs.

[0027] like Figure 3 As shown, base 3 provides stable support for the entire device. The anti-tilt component of the base can be an anti-tilt rod 32. One end of the base guide rod 31 is fixedly connected to the middle of the anti-tilt rod 32. The anti-tilt rod 32 and the base guide rod 31 are perpendicular to each other, and the anti-tilt rod 32 and the connecting part 11 are located on the same side of the column 21. Base 3 adopts a stable T-shaped structure welded from metal square tubes. This design increases the contact area with the ground, effectively dispersing the vibration and cutting force during equipment operation, preventing overall shaking, and ensuring the base is solid. Base 3 can be easily fixed to the ground at any angle with bolts, allowing for quick reuse and rotation between different project sites and different equipment.

[0028] like Figure 1As shown, bracket 2 is also made of metal square tubing, ensuring structural strength. As a supporting frame, the bracket in this embodiment preferably consists of components such as uprights 21 and crossbars 22. The crossbar 22 is located on the end of the upright 21 away from the base guide rod 31, and the upright 21 and the crossbar 22 are perpendicular to each other. The end of the crossbar 22 near the protective part 12 is slidably connected to the connecting part 11, and the other end of the upright 21 is slidably connected to the base guide rod 31. To further enhance the stability of bracket 2, this embodiment also includes diagonal bracing 23. Diagonal bracing 23 is also made of metal square tubing, with one end fixedly connected to the area of ​​the upright 21 near the first transverse sliding sleeve 51, and the other end slidably connected to the crossbar 22. In this embodiment, the bracket 2 structure made of metal square tubing constructs a robust and adjustable supporting frame to enhance overall stability. The upright column 21 is slidably connected to the base guide rod 31 via the first adjusting component 5 for horizontal adjustment; the crossbar 22 is connected to the connecting part 11 via the second adjusting component 6 for vertical adjustment; the diagonal brace 23 is fixed at one end to the area near the top of the upright column 21, and the other end extends below the crossbar 22, forming a triangular support. The metal square tube provides high strength, capable of withstanding vibrations and loads during sawing and preventing deformation; the sliding connection allows for flexible adjustment of the bracket's position, while the diagonal brace 23 enhances resistance to lateral swaying, ensuring the overall structure of the protective cover remains stable after adjustment, preventing shaking during operation, thereby improving safety and reliability. The overall structure is simple and durable, easy to assemble and adjust, and suitable for various working environments.

[0029] In this embodiment, the adjusting component 4 is key to realizing the core function of this embodiment. It includes a first adjusting component 5, a second adjusting component 6, a third adjusting component 7, and a fourth adjusting component 8. The first adjusting component 5 includes a first transverse sliding sleeve 51 and a first fastener 52. The second adjusting component 6 includes a vertical sliding sleeve 61 and a second fastener 62. The third adjusting component 7 includes a second transverse sliding sleeve 71 and a third fastener 72. The sliding sleeves are all hollow square tube structures, with the inner contour size slightly larger than the outer contour size of the metal square tube that serves as the support and base, forming a sliding pair. The fasteners are all bolts. Threaded holes are correspondingly opened on the side wall of each sliding sleeve. When position adjustment is required, simply loosen the bolts on the corresponding sliding sleeves to easily push the various parts of the support or the main body 1 of the protective cover to the desired position. After adjustment, tighten the bolts again. The ends of the bolts will press against the internal metal square tube, using friction and local deformation to firmly lock it in place, making the fixation simple and reliable.

[0030] In this embodiment, the length of the first transverse sliding sleeve 51 is three times its width. The longer first transverse sliding sleeve 51 provides more stable lateral support for the column 21, effectively preventing the column 21 from swaying laterally. The outer wall of the first transverse sliding sleeve 51 is welded to the bottom end of the column 21. The length direction of the first transverse sliding sleeve 51 is perpendicular to the column 21, and the base guide rod 31 passes through it. The column 21 is slidably connected to the base 3 through the first transverse sliding sleeve 51. The first fastener 52 is installed on the first transverse sliding sleeve 51, and the first fastener 52 is used to limit the relative movement between the column 21 and the base guide rod 31, realizing that the entire protective cover can be adjusted horizontally along the length direction of the base 3 to adapt to different distances between the woodworking saw and the edge of the workbench. The length of the vertical sliding sleeve 61 is three times its width. The longer vertical sliding sleeve 61 provides more stable lateral support for the connecting part 11, effectively preventing the connecting part 11 from swaying laterally. A vertical sliding sleeve 61 is welded to one end of the horizontal bar 22 near the connecting part 11. The length direction of the vertical sliding sleeve 61 is parallel to the column 21. The upper end of the connecting part 11 is inserted into it. The horizontal bar 22 is slidably connected to the connecting part 11 through the vertical sliding sleeve 61. A second fastener 62 is installed on the vertical sliding sleeve 61 and is used to limit the relative movement between the horizontal bar 22 and the connecting part 11. The vertical adjustment of the protective cover body 1 is realized by the raising and lowering of the connecting part 11 within the vertical sliding sleeve 61. A second transverse sliding sleeve 71 is welded to the top of the column 21. The length direction of the second transverse sliding sleeve 71 is parallel to the base guide rod 31. One end of the horizontal bar 22 is inserted into it. The column 21 is slidably connected to the horizontal bar 22 through the second transverse sliding sleeve 71. A third fastener 72 is installed on the second transverse sliding sleeve 71 and is used to limit the relative movement between the column 21 and the horizontal bar 22. This allows the protective cover to be adjusted horizontally in a second stage along the length direction of the horizontal bar 22, thereby covering the area on the other side of the saw blade. The third transverse sliding sleeve 81 is welded to the end of the diagonal brace 23 near the crossbar 22, allowing the crossbar 22 to pass through both the second transverse sliding sleeve 71 and the third transverse sliding sleeve 81 simultaneously. The diagonal brace 23 is slidably connected to the crossbar 22 through the third transverse sliding sleeve 81. The fourth fastener 82 is installed on the third transverse sliding sleeve 81 and is used to limit the relative movement between the diagonal brace 23 and the crossbar 22, providing multi-point support for the crossbar 22, thereby improving the stability of the crossbar 22 when sliding and thus enhancing the overall robustness of the device.

[0031] In this embodiment, plates of different thicknesses are precisely matched to ensure that the protective cover effectively covers the saw blade without being too high to obstruct the view or too low to hinder material feeding. Threaded holes are provided on the side wall of each sliding sleeve. After adjustment to the desired position, tightening the corresponding bolts will press against the internal square tube, thereby firmly fixing the various parts of the bracket 2 and the main body of the protective cover 1.

[0032] like Figure 4As shown, the protective section 12 is a semi-circular cover, made of stamped or spliced ​​steel plates of a certain thickness. Its curvature matches the circular saw blade, effectively blocking sawdust and debris flying during sawing. Its size is sufficient to cover the dangerous area of ​​the woodworking circular saw blade and provide physical isolation protection for the operator's hands. The protective section 12 is connected to the crossbar 22 via the connecting part 11, allowing for the replacement of different sized protective covers according to different woodworking saw sizes. This enables the protective cover to be adapted to different sizes of woodworking saws and quickly reused between different machines, achieving reusability and reducing initial investment costs.

[0033] In this embodiment, the installation and use process of the adjustable woodworking saw guard is as follows:

[0034] First, fix the base 3 in the predetermined position. Then, fit the first transverse sliding sleeve 51 at the bottom of the column 21 onto the base guide rod 31 and tighten the bolts for initial fixation. Next, insert the crossbar 22 sequentially into the third transverse sliding sleeve 81 of the diagonal brace 23 and the second transverse sliding sleeve 71 at the top of the column 21, and tighten the bolts for initial fixation. Finally, select a protective part 12 of appropriate size, insert the upper end of the connecting part 11 connected to the protective part 12 into the vertical sliding sleeve 61 at the end of the crossbar 22, and tighten the bolts for initial fixation.

[0035] Based on the thickness and width of the material to be cut and the cutting requirements, loosen the fastening bolts on each sliding sleeve in sequence. Adjust the overall front-to-back position by sliding the upright 21, adjust the left-to-right position by sliding the crossbar 22, and adjust the height of the protective cover by sliding the connecting part 11 until the protective part 12 completely covers the dangerous area of ​​the saw blade without obstructing the cutting view or hindering the smooth feeding of the material. During the adjustment process, the diagonal brace 23 always provides stable support for the crossbar 22. After the position is determined, tighten all bolts thoroughly in sequence to ensure that the entire structure is stable and correct before starting safe operation. When it is necessary to move this protective cover between different equipment or sites, simply loosen the bolts to quickly disassemble the device, facilitating transportation and reassembly, and realizing the repeated and efficient use of the tool.

[0036] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "upper" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model.

[0037] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0038] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural transformations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. An adjustable protective cover for a woodworking saw, characterized in that, include: The protective cover body (1) includes a connecting part (11) and a protective part (12). One end of the connecting part (11) is fixedly connected to the top of the protective part (12). The protective part (12) is used to cover the dangerous area of ​​the saw blade. The support (2) includes a column (21) and a crossbar (22), the crossbar (22) is disposed on one end of the column (21), and a connecting part (11) is provided at one end of the crossbar (22); The base (3) includes a base guide rod (31) and a base anti-tilting component. The base anti-tilting component is fixedly installed at one end of the base guide rod (31), and a column (21) is provided on the base guide rod (31). The adjustment component (4) includes a first adjustment component (5) and a second adjustment component (6). The first adjustment component (5) includes a first transverse sliding sleeve (51) and a first fastener (52). The side of the first transverse sliding sleeve (51) is fixedly connected to one end of the column (21) near the base guide rod (31). The length direction of the first transverse sliding sleeve (51) is perpendicular to the length direction of the column (21). The base guide rod (31) passes through the first transverse sliding sleeve (51). The column (21) is slidably connected to the base guide rod (31) through the first transverse sliding sleeve (51). The first fastener (52) is installed on the first transverse sliding sleeve (51) and is used to limit the column (21) from the base guide rod (31). The relative movement between the guide rods (31), the second adjusting component (6) includes a vertical sliding sleeve (61) and a second fastener (62), the side of the vertical sliding sleeve (61) is fixedly connected to the end of the crossbar (22) near the connecting part (11), the length direction of the vertical sliding sleeve (61) is parallel to the length direction of the column (21), the connecting part (11) passes through the vertical sliding sleeve (61), and the protective part (12) is located on the side of the crossbar (22) near the base (3), the crossbar (22) is slidably connected to the connecting part (11) through the vertical sliding sleeve (61), the second fastener (62) is installed on the vertical sliding sleeve (61), and the second fastener (62) is used to limit the relative movement between the crossbar (22) and the connecting part (11).

2. The adjustable woodworking saw protective cover according to claim 1, characterized in that: The adjusting component (4) further includes a third adjusting component (7), which includes a second transverse sliding sleeve (71) and a third fastener (72). The side of the second transverse sliding sleeve (71) is fixedly connected to one end of the column (21) near the crossbar (22). The length direction of the second transverse sliding sleeve (71) is parallel to the length direction of the first transverse sliding sleeve (51). The crossbar (22) passes through the second transverse sliding sleeve (71). The column (21) is slidably connected to the crossbar (22) through the second transverse sliding sleeve (71). The third fastener (72) is installed on the second transverse sliding sleeve (71) and is used to limit the relative movement between the column (21) and the crossbar (22).

3. An adjustable woodworking saw protective cover according to claim 2, characterized in that: The bracket (2) also includes a diagonal brace (23), one end of which is fixedly connected to the area of ​​the column (21) near the first transverse sliding sleeve (51), and the other end of which extends to the bottom of the crossbar (22) and is used to provide additional support for the crossbar (22).

4. An adjustable woodworking saw protective cover according to claim 3, characterized in that: The adjusting component (4) further includes a fourth adjusting component (8), which includes a third transverse sliding sleeve (81) and a fourth fastener (82). The third transverse sliding sleeve (81) is fixedly connected to one end of the diagonal brace (23) near the crossbar (22). The crossbar (22) can be simultaneously inserted into the second transverse sliding sleeve (71) and the third transverse sliding sleeve (81). The diagonal brace (23) is slidably connected to the crossbar (22) through the third transverse sliding sleeve (81). The fourth fastener (82) is installed on the third transverse sliding sleeve (81) and is used to restrict the relative movement between the diagonal brace (23) and the crossbar (22).

5. An adjustable woodworking saw protective cover according to claim 1, characterized in that: The protective part (12) has a semi-circular structure and is made of steel plates spliced ​​together.

6. An adjustable woodworking saw protective cover according to claim 1, characterized in that: The first fastener (52), the second fastener (62), the third fastener (72) and the fourth fastener (82) are all bolts. The first transverse sliding sleeve (51), the second transverse sliding sleeve (71), the third transverse sliding sleeve (81) and the vertical sliding sleeve (61) are all provided with threaded holes for threaded connection with the corresponding bolts.

7. An adjustable woodworking saw protective cover according to claim 1, characterized in that: The base anti-tilt component is a base anti-tilt rod (32). One end of the base guide rod (31) is fixedly connected to the middle of the base anti-tilt rod (32). The base anti-tilt rod (32) and the base guide rod (31) are perpendicular to each other. The base anti-tilt rod (32) and the connecting part (11) are located on the same side of the column (21).

8. An adjustable woodworking saw protective cover according to claim 7, characterized in that: The connecting part (11), column (21), crossbar (22), base guide rod (31) and base anti-tilt rod (32) are all made of metal square tube.

9. An adjustable woodworking saw protective cover according to claim 8, characterized in that: The first transverse sliding sleeve (51), the second transverse sliding sleeve (71), the third transverse sliding sleeve (81) and the vertical sliding sleeve (61) are all hollow tubular structures. The inner contour of the hollow tubular structure matches the outer contour of the metal square tube, so that the hollow tubular structure and the metal square tube rod inserted therein can slide relative to each other.