Corner cutting adjusting mechanism for flange bolt cutting saw

Abstract

The utility model provides a cutting angle adjusting mechanism for a flange bolt cutting saw. The cutting angle adjusting mechanism comprises a supporting plate, a fixing plate, an angle adjusting mechanism, two clamping mechanisms, two flange fixing structures and four positioning mechanisms. The two clamping mechanisms are symmetrically arranged on the left side and the right side of the fixing plate and used for clamping the side portion of a shell of the flange bolt cutting saw. The lower end face of the fixing plate is connected with the supporting plate through the angle adjusting mechanism, the four positioning mechanisms are symmetrically arranged on the supporting plate, one ends of the positioning mechanisms are hinged to the supporting plate, and the other ends of the positioning mechanisms are connected with the fixing plate. According to the corner cutting adjusting mechanism for the flange bolt cutting saw, the problem that a corner cutting adjusting function is lacked due to the fact that a flange bolt cutting saw in the related technology can only conduct vertical or horizontal cutting is solved.

Description

Technical Field

[0001] This utility model belongs to the field of cutting technology, and in particular relates to a cutting angle adjustment mechanism for a flange bolt cutting saw. Background Technology

[0002] A flange bolt cutting saw is a specialized tool for quickly cutting rusted, deformed, or difficult-to-remove bolts in flange connections, commonly used in petrochemical, offshore oil and gas emergency rescue, and other fields. Its core function is to efficiently cut bolts using a high-powered saw blade (usually hydraulically or electrically driven), making it suitable for confined spaces or emergency repair scenarios. However, because existing flange bolt cutting saws can only cut vertically or horizontally, they lack angle adjustment capabilities; the device only supports horizontal or vertical installation and cannot adjust the angle between the cutting disc and the workpiece. To cut bolts at an angle or handle flanges that are not installed vertically or horizontally, additional adjustments to the flange position or the use of auxiliary clamps are required, increasing operational complexity. Summary of the Invention

[0003] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A cutting angle adjustment mechanism for a flange bolt cutting saw includes a support plate, a fixing plate, an angle adjustment mechanism, two clamping mechanisms, two flange fixing structures, and four positioning mechanisms.

[0006] The two clamping mechanisms are symmetrically arranged on the left and right sides of the fixed plate. The clamping mechanisms are used to clamp the side of the housing of the flange bolt cutting saw.

[0007] The lower end face of the fixed plate is connected to the support plate through the angle adjustment mechanism. Four positioning mechanisms are symmetrically arranged on the support plate. One end of the positioning mechanism is hinged to the support plate, and the other end of the positioning mechanism is connected to the fixed plate.

[0008] Two flange fixing structures are symmetrically arranged on the lower end face of the support plate, and the flange fixing structures are used to connect the side end faces of the flanges.

[0009] Furthermore, the angle adjustment mechanism includes a hinge structure, an adjustment plate, a sliding rack, an adjustment screw, a slide rod, a limiting block, and two side baffles. The two side baffles are symmetrically arranged at the left and right ends of the support plate. The adjustment plate is located on the lower end face of the fixed plate. The bottom of the adjustment plate has a toothed structure that engages with the sliding rack. The sliding rack is located between the two side baffles. One end of the sliding rack is rotatably connected to the adjustment screw, and the other end of the sliding rack is connected to the slide rod. The end of the slide rod away from the sliding rack is connected to the limiting block. The adjustment screw is threadedly connected to one side baffle, and the slide rod is slidably engaged with one side baffle. The adjustment plate is connected to the support plate through the hinge structure.

[0010] Furthermore, the clamping mechanism includes a fixed clamping plate and a locking bolt. The side of the flange bolt cutting saw housing is provided with a positioning groove, the side of the fixed plate is provided with an installation groove, the bottom of the fixed clamping plate is connected to the installation groove by the locking bolt, and the inner end face of the fixed clamping plate is provided with a positioning protrusion that can cooperate with the positioning groove.

[0011] Furthermore, the positioning mechanism includes a positioning plate and a positioning component. The positioning plate has a stroke hole, and the end of the positioning plate is hinged to the support plate through a rotating shaft. The fixing plate is connected to the stroke hole through the positioning component, and the positioning component is used to connect and fix the positioning plate and the fixing plate.

[0012] Furthermore, the flange fixing structure includes a fixing base and fixing bolts. The inner side of the fixing base is provided with a curved surface that can mate with the side end face of the flange. The fixing bolts are located at the bottom of the fixing base and are used to connect to the threaded holes preset on the side end face of the flange.

[0013] Furthermore, the hinge structure includes a rotating rod and two hinge seats. The rotating rod is rotatably connected to the adjusting plate. A hinge seat is provided at each of the front and rear ends of the rotating rod. The bottom of the hinge seat is connected to the support plate.

[0014] Furthermore, the positioning assembly includes a positioning bolt and a washer. The threaded portion of the positioning bolt is connected to the fixing plate, and the positioning bolt can slide within the stroke hole. The washer is disposed between the positioning plate and the countersunk head of the positioning bolt.

[0015] Compared with the prior art, the cutting angle adjustment mechanism for a flange bolt cutting saw described in this utility model has the following advantages:

[0016] 1. A rigid connection between the hinged structure and the adjusting plate forms a stable rotation fulcrum, ensuring the overall structure of the equipment remains stable and does not shift during angle adjustment. The sliding rack meshes tightly with the toothed structure at the bottom of the adjusting plate, precisely converting the linear displacement of the screw into a rotation angle, enabling flexible adjustment of the cutting direction. Angle setting can be completed simply by manually rotating the adjusting screw; operation is easy and effortless, requiring no additional tools. The self-locking characteristic of the rack and toothed structure automatically maintains its fixed position after adjustment, preventing angle loosening during the cutting process.

[0017] 2. The positioning plate, through its travel holes and engagement with the positioning components, forms an adjustable connection structure, limiting the relative displacement between the fixed plate and the support plate and preventing angular deviation caused by cutting vibration. The positioning bolts, passing through the travel holes, connect to the fixed plate. Tightening the countersunk head secures the shims, ensuring no loosening after the angle is fixed. The waist-shaped structure of the travel holes provides sliding allowance, allowing relative displacement of the positioning plate during angle adjustment. The shims form an elastic interface between the countersunk head of the positioning bolts and the positioning plate, absorbing high-frequency vibrations during cutting and reducing the impact force transmitted to the support structure. Four symmetrically distributed positioning mechanisms work together to evenly distribute local loads across the entire support plate, suppressing resonance. Attached Figure Description

[0018] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 This is a schematic diagram of a cutting angle adjustment mechanism for a flange bolt cutting saw according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the flange fixing structure described in an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the clamping mechanism structure described in an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the positioning mechanism structure described in an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the angle adjustment mechanism described in an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Fixing plate; 200. Support plate; 210. Hinge seat; 300. Flange fixing structure; 310. Fixing seat; 320. Fixing bolt; 400. Positioning mechanism; 410. Positioning plate; 420. Positioning assembly; 500. Angle adjustment mechanism; 510. Sliding rack; 520. Adjusting plate; 530. Adjusting screw; 540. Slide rod; 600. Clamping mechanism; 610. Fixing clamp; 620. Locking bolt; 630. Positioning protrusion. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] A cutting angle adjustment mechanism for a flange bolt cutting saw, such as Figure 1 As shown, it includes a support plate 200, a fixing plate 100, an angle adjustment mechanism 500, two clamping mechanisms 600, two flange fixing structures 300, and four positioning mechanisms 400.

[0031] Two clamping mechanisms 600 are symmetrically arranged on the left and right sides of the fixed plate 100. The clamping mechanism 600 is used to clamp the side of the housing of the flange bolt cutting saw. The clamping mechanism 600 includes a fixed clamping plate 610 and a locking bolt 620. The side of the housing of the flange bolt cutting saw is provided with a positioning groove, and the side of the fixed plate 100 is provided with an installation groove. The bottom of the fixed clamping plate 610 is connected to the installation groove through the locking bolt 620. The inner end face of the fixed clamping plate 610 is provided with a positioning protrusion 630 that can cooperate with the positioning groove.

[0032] The lower end face of the fixed plate 100 is connected to the support plate 200 via an angle adjustment mechanism 500. Four positioning mechanisms 400 are symmetrically arranged on the support plate 200. One end of each positioning mechanism 400 is hinged to the support plate 200, and the other end is connected to the fixed plate 100. Figure 5 As shown, the angle adjustment mechanism 500 includes a hinge structure, an adjustment plate 520, a sliding rack 510, an adjustment screw 530, a slide rod 540, a limiting block, and two side baffles. The two side baffles are symmetrically arranged at the left and right ends of the support plate 200. The adjustment plate 520 is located on the lower end face of the fixed plate 100. The bottom of the adjustment plate 520 is provided with a toothed structure, which cooperates with the sliding rack 510. The sliding rack 510 is located between the two side baffles. One end of the sliding rack 510 is rotatably connected to the adjustment screw 530, and the other end of the sliding rack 510 is connected to the slide rod 540. The end of the slide rod 540 away from the sliding rack 510 is connected to the limiting block. The adjustment screw 530 is threadedly connected to one side baffle, and the slide rod 540 is slidably engaged with one side baffle. The adjustment plate 520 is connected to the support plate 200 through the hinge structure. The hinge structure includes a rotating rod and two hinge seats 210. The rotating rod is rotatably connected to the adjusting plate 520, and a hinge seat 210 is provided at both the front and rear ends of the rotating rod. The bottom of the hinge seat 210 is connected to the support plate 200. The rigid connection between the hinge structure and the adjusting plate 520 forms a stable rotation fulcrum, ensuring the overall structure of the equipment remains stable and does not shift during angle adjustment. The sliding rack 510 meshes tightly with the toothed structure at the bottom of the adjusting plate 520, accurately converting the linear displacement of the screw into a rotation angle, enabling flexible adjustment of the cutting direction. The angle can be set by manually rotating the adjusting screw 530, making operation easy and effortless, requiring no additional tools. The self-locking characteristic of the rack and toothed structure automatically maintains a fixed position after adjustment, preventing angle loosening during the cutting process.

[0033] Two flange fixing structures 300 are symmetrically arranged on the lower end face of the support plate 200. The flange fixing structures 300 are used to connect the side end faces of the flanges. The flange fixing structure 300 includes a fixing base and fixing bolts 320. The inner side of the fixing base is provided with a curved surface that can mate with the side end face of the flange. The fixing bolts 320 are located at the bottom of the fixing base and are used to connect to the pre-set threaded holes on the side end face of the flange.

[0034] The positioning mechanism 400 includes a positioning plate 410 and a positioning assembly 420. The positioning plate 410 has a stroke hole, and its end is hinged to the support plate 200 via a pivot. The fixed plate 100 is connected to the stroke hole via the positioning assembly 420. The positioning assembly 420 is used to connect and fix the positioning plate 410 and the fixed plate 100. In this example, the positioning assembly 420 includes a positioning bolt and a washer. The threaded portion of the positioning bolt is connected to the fixed plate 100, and the positioning bolt can slide within the stroke hole. The washer is placed between the positioning plate 410 and the countersunk head of the positioning bolt. The positioning plate 410, through the cooperation of the stroke hole and the positioning assembly 420, forms an adjustable connection structure, limiting the relative displacement between the fixed plate 100 and the support plate 200 and preventing angular deviation caused by cutting vibration. After the positioning bolt passes through the stroke hole, it is connected to the fixed plate 100. By tightening the countersunk head, the washer is pressed to ensure that there is no loosening after the angle is fixed. The waist-shaped structure of the stroke hole provides sliding allowance, allowing relative displacement of the positioning plate 410 when adjusting the angle. The gasket forms an elastic interface between the countersunk head of the positioning bolt and the positioning plate 410, absorbing high-frequency vibrations during the cutting process and reducing the impact force transmitted to the supporting structure. Four sets of symmetrically distributed positioning mechanisms 400 work together to evenly distribute the local load to the entire support plate 200, suppressing resonance.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cutting angle adjustment mechanism for a flange bolt cutting saw, characterized in that: It includes a support plate (200), a fixing plate (100), an angle adjustment mechanism (500), two clamping mechanisms (600), two flange fixing structures (300), and four positioning mechanisms (400); Two clamping mechanisms (600) are symmetrically arranged on the left and right sides of the fixing plate (100). The clamping mechanisms (600) are used to clamp the side of the housing of the flange bolt cutting saw. The lower end face of the fixed plate (100) is connected to the support plate (200) through the angle adjustment mechanism (500). Four positioning mechanisms (400) are symmetrically arranged on the support plate (200). One end of the positioning mechanism (400) is hinged to the support plate (200), and the other end of the positioning mechanism (400) is connected to the fixed plate (100). Two flange fixing structures (300) are symmetrically arranged on the lower end face of the support plate (200), and the flange fixing structures (300) are used to connect the side end faces of the flange.

2. The cutting angle adjustment mechanism for a flange bolt cutting saw according to claim 1, characterized in that: The angle adjustment mechanism (500) includes a hinge structure, an adjustment plate (520), a sliding rack (510), an adjustment screw (530), a slide rod (540), a limiting block, and two side baffles. The two side baffles are symmetrically arranged at the left and right ends of the support plate (200). The adjustment plate (520) is located on the lower end face of the fixed plate (100). The bottom of the adjustment plate (520) is provided with a toothed structure, which cooperates with the sliding rack (510). The sliding rack (510) is disposed between the two side baffles. One end of the sliding rack (510) is rotatably connected to the adjusting screw (530), and the other end of the sliding rack (510) is connected to the slide rod (540). The end of the slide rod (540) away from the sliding rack (510) is connected to the limiting block. The adjusting screw (530) is threadedly connected to one side baffle, and the slide rod (540) is slidably engaged with one side baffle. The adjusting plate (520) is connected to the support plate (200) through a hinge structure.

3. The cutting angle adjustment mechanism for a flange bolt cutting saw according to claim 1, characterized in that: The clamping mechanism (600) includes a fixed clamping plate (610) and a locking bolt (620). The side of the housing of the flange bolt cutting saw is provided with a positioning groove. The side of the fixed plate (100) is provided with an installation groove. The bottom of the fixed clamping plate (610) is connected to the installation groove through the locking bolt (620). The inner end face of the fixed clamping plate (610) is provided with a positioning protrusion (630) that can cooperate with the positioning groove.

4. A cutting angle adjustment mechanism for a flange bolt cutting saw according to any one of claims 1-3, characterized in that: The positioning mechanism (400) includes a positioning plate (410) and a positioning component (420). The positioning plate (410) has a stroke hole. The end of the positioning plate (410) is hinged to the support plate (200) through a rotating shaft. The fixing plate (100) is connected to the stroke hole through the positioning component (420). The positioning component (420) is used to connect and fix the positioning plate (410) and the fixing plate (100).

5. The cutting angle adjustment mechanism for a flange bolt cutting saw according to claim 4, characterized in that: The flange fixing structure (300) includes a fixing base and a fixing bolt (320). The inner side of the fixing base is provided with a curved surface that can cooperate with the side end face of the flange. The fixing bolt (320) is located at the bottom of the fixing base and is used to connect to the threaded hole preset on the side end face of the flange.

6. The cutting angle adjustment mechanism for a flange bolt cutting saw according to claim 2, characterized in that: The hinge structure includes a rotating rod and two hinge seats (210). The rotating rod is rotatably connected to the adjusting plate (520). A hinge seat (210) is provided at the front and rear ends of the rotating rod. The bottom of the hinge seat (210) is connected to the support plate (200).

7. The cutting angle adjustment mechanism for a flange bolt cutting saw according to claim 4, characterized in that: The positioning assembly (420) includes a positioning bolt and a washer. The threaded portion of the positioning bolt is connected to the fixing plate (100). The positioning bolt can slide within the stroke hole. The washer is disposed between the positioning plate (410) and the countersunk head of the positioning bolt.

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