A cold saw

Abstract

The utility model provides a cold cut saw, include: clamping subassembly, limiting component, limiting component has first limiting portion and second limiting portion, first limiting portion is movably arranged relative to second limiting portion, first limiting portion has the avoidance state and limiting state of clamping subassembly, wherein, when first limiting portion is in limiting state, first limiting portion is connected with second limiting portion and forms the threaded space, and at least part of clamping subassembly is screwed with threaded space, when first limiting portion is in avoidance state, first limiting portion is away from second limiting portion, and at least part of clamping subassembly is movably arranged relative to first limiting portion and second limiting portion, set up the limiting component with movable first limiting portion and fixed second limiting portion, reached when clamping subassembly needs fast wide range movement to adapt to different size workpieces, the effect that the threaded restraint of clamping subassembly movement is removed and makes it freely movable.

Description

Technical Field

[0001] This utility model relates to the field of cold cutting saw technology, and specifically to a cold cutting saw. Background Technology

[0002] A manual cold-cutting saw is a relatively simple, flexible, and low-cost cutting tool widely used in construction sites, small processing plants, pipe installation, equipment maintenance, and other applications. It is used to cut metal pipes, bars, profiles (such as angle steel and channel steel), and some non-metallic materials (such as PVC pipes and wood). Its working principle involves the operator manually applying force to drive the saw blade (usually a carbide or high-speed steel blade) to rotate around a fixed axis or oscillate along a specific trajectory, thereby cutting the workpiece. Due to its ease of use, portability, and portability, manual cold cutting saws have irreplaceable advantages in certain fields. However, it has been found that manual fixation of the material being cut is required during use, making operation inconvenient. A search revealed that prior art publication number CN221494433U discloses a multi-functional cold cutting saw. This device places the object to be cut between the left and right fixed plates, then rotates the threaded rod handle. The handle drives the threaded rod to rotate, which in turn moves the left fixed plate along its groove towards the object until the anti-slip pad completely contacts the object, thus securing the object on the fixed base. However, this device requires multiple screw adjustments during clamping to secure the object. When dealing with objects of varying sizes, these adjustments can negatively impact cutting efficiency.

[0003] Therefore, existing technologies need further development. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a cold cutting saw to solve the technical problem in the related technology that the screw needs to be turned multiple times to fix the object being cut during the clamping process. When dealing with objects with large size differences, the efficiency of cutting is affected by the repeated turning of the screw to adjust and fix the object.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: a cold cutting saw is provided, comprising: a clamping assembly; a limiting assembly, the limiting assembly having a first limiting part and a second limiting part, the first limiting part being movably disposed relative to the second limiting part, the first limiting part having a clearance state and a limiting state relative to the clamping assembly; wherein, when the first limiting part is in the limiting state, the first limiting part and the second limiting part are connected to form a threaded space, and at least a portion of the clamping assembly is threadedly engaged with the threaded space; when the first limiting part is in the clearance state, the first limiting part is away from the second limiting part, and at least a portion of the clamping assembly is movably disposed relative to the first limiting part and the second limiting part.

[0006] Further, the limiting component includes: a second limiting block; and a first limiting block, the first limiting block being located above the second limiting block and movably disposed in the vertical direction, the first limiting block having a clearance state and a limiting state against the clamping component. Further, the limiting component also includes: a first guide plate connected to the second limiting block; and a second guide plate installed on the side of the second limiting block away from the first guide plate, the first limiting block being movably disposed between the first guide plate and the second guide plate in the vertical direction.

[0007] Furthermore, the limiting component also includes: a first guide block, wherein the first limiting block is provided with a first groove adapted to the first guide block, the first guide block is located in the first groove, the first guide block is installed on the side of the first guide plate near the first limiting block, the first guide block extends in a vertical direction, and the first limiting block is movably arranged along the extension direction of the first guide block; a second guide block, wherein the second limiting block is provided with a second groove adapted to the second guide block, the second guide block is located in the second groove, the second guide block is installed on the side of the second guide plate facing the second limiting block, the second guide block extends in a vertical direction, and the second limiting block is movably arranged along the extension direction of the second guide block; the second guide block is opposite to and offset from the first guide block.

[0008] Furthermore, the clamping assembly includes: a positioning plate; a clamping plate, which is movably disposed relative to the positioning plate and cooperates with the positioning plate to fix the material to be cut; and a screw, which is rotatably disposed on the side of the clamping plate away from the positioning plate. When the first limiting block is in the limiting state, the screw is threadedly engaged with the threaded space; when the first limiting block is in the avoidance state, the screw is movably disposed relative to the first limiting block.

[0009] Furthermore, the cold cutting saw also includes a fixing component, which is disposed on the first guide plate and / or the second guide plate, and is used to fix the first limiting block and the second limiting block.

[0010] Furthermore, the fixing component includes: a fixing plate, which is rotatably disposed; a rotating shaft, which is rotatably disposed on a first guide plate and / or a second guide plate, with the fixing plate disposed on the side of the rotating shaft away from the first guide plate; wherein, when it is necessary to fix the first limiting block, the fixing plate abuts against the first limiting block.

[0011] Furthermore, the second limiting block is provided with a lifting space; the cold cutting saw also includes a lifting assembly, which has a lifting part and a rotating part. The lifting part abuts against the first limiting block and is rotatably disposed in the lifting space; the rotating part is rotatably disposed and connected to the lifting part. The rotating part is used to drive the lifting part to rotate so as to drive the first limiting block away from the second limiting block.

[0012] Furthermore, the lifting assembly includes: a cam, which is rotatably configured to abut against a first limiting block to drive the first limiting block away from the second limiting block; and a rotating rod that passes through the second limiting block into the lifting space and is connected to the side of the cam away from the threaded space.

[0013] Furthermore, the cold cutting saw also includes: a cold cutting saw body; a base, on which the cold cutting saw body, a clamping component, and a limiting component are disposed, with the clamping component spaced apart from the cold cutting saw body.

[0014] Beneficial effects: 1. By setting the first guide plate and the second guide plate on both sides of the second limit block respectively, and making the first limit block movable in the vertical direction between them, a stable and parallel double-sided guide support is provided for the lifting and lowering movement of the first limit block. This effectively prevents the first limit block from tilting or getting stuck during the lifting and lowering process, and ensures the smoothness of its state switching and the alignment accuracy with the second limit block.

[0015] 2. A limiting component with a movable first limiting part and a fixed second limiting part is provided, and the first limiting part has both an avoidance state and a limiting state. This achieves the effect of releasing the thread constraint on the movement of the clamping component when it needs to move quickly and over a wide range to adapt to workpieces of different sizes, allowing it to move freely. It also restores the thread constraint when precise clamping of the workpiece is required, so that the clamping component can achieve precise adjustment and reliable locking through thread transmission. This significantly reduces the number of thread tightening operations for workpieces of different sizes and improves clamping efficiency.

[0016] 3. By setting a fixing component, the first limiting block can be reliably fixed in the position when it is in the limiting state, preventing the first limiting block from accidentally moving upward and disengaging from the limiting state during the threaded clamping of the workpiece, thus ensuring the stability and safety of the clamping process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the cold-cutting saw used in this embodiment of the utility model; Figure 2 This is the cold-cutting saw used in this embodiment of the utility model. Figure 1 Enlarged view of point A in the image; Figure 3 This is a partial structural schematic diagram of the cold-cutting saw used in an embodiment of this utility model.

[0018] The above figures include the following reference numerals: 1. Clamping assembly; 2. Limiting assembly; 3. Second limiting block; 4. First limiting block; 5. Second threaded section; 6. First guide plate; 7. Second guide plate; 8. First guide block; 9. Second guide block; 10. Positioning plate; 11. Abutting plate; 12. Screw; 13. First hand grip; 14. Fixing assembly; 15. Rotating shaft; 16. Fixing plate; 17. Lifting assembly; 18. Cam; 19. Rotating rod; 20. Second hand grip; 21. Cold cutting saw body; 22. Base. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] According to an embodiment of this utility model, a cold cutting saw is provided. Please refer to [link / reference]. Figures 1 to 3 The device includes: a clamping assembly 1; and a limiting assembly 2, the limiting assembly 2 having a first limiting portion and a second limiting portion, the first limiting portion being movably disposed relative to the second limiting portion, the first limiting portion having a clearance state and a limiting state relative to the clamping assembly 1; wherein, when the first limiting portion is in the limiting state, the first limiting portion and the second limiting portion are connected to form a threaded space, and at least a portion of the clamping assembly 1 is threadedly engaged with the threaded space; when the first limiting portion is in the clearance state, the first limiting portion is moved away from the second limiting portion, and at least a portion of the clamping assembly 1 is movably disposed relative to the first limiting portion and the second limiting portion.

[0021] By adopting the above technical solution, a limiting component 2 with a movable first limiting part and a fixed second limiting part is set, and the first limiting part has both an avoidance state and a limiting state. This achieves the effect of releasing the thread constraint on the movement of the clamping component 1 when it needs to move quickly and over a wide range to adapt to workpieces of different sizes, allowing it to move freely. It also achieves the effect of restoring the thread constraint when it is necessary to precisely clamp the workpiece, so that the clamping component 1 can achieve precise adjustment and reliable locking through thread transmission. This significantly reduces the number of thread tightening operations for workpieces of different sizes and improves clamping efficiency.

[0022] Please refer to Figure 2 and Figure 3 The limiting component 2 includes: a second limiting block 3; a first limiting block 4, the first limiting block 4 being located above the second limiting block 3 and being movably arranged in the vertical direction, the first limiting block 4 having a clearance state and a limiting state for the clamping component 1.

[0023] When the first limiting block 4 is in the limiting state, it connects with the second limiting block 3 to form a threaded space, and at least a portion of the clamping assembly 1 is threadedly engaged with the threaded space. When the first limiting block 4 is in the avoidance state, it moves away from the second limiting block 3, and at least a portion of the clamping assembly 1 is movably disposed relative to the first limiting block 4 and the second limiting block 3. The first limiting block 4 forms a first limiting portion; the second limiting block 3 forms a second limiting portion.

[0024] Specifically, the first limiting block 4 has a first threaded section on the side facing the second limiting block 3, and the second limiting block 3 has a second threaded section 5 on the side close to the first limiting block 4. The first threaded section and the second threaded section 5 form a threaded space.

[0025] By adopting the above technical solution, the first limiting part is specifically defined as a first limiting block 4 that can move in the vertical direction, and the second limiting part is specifically defined as a second limiting block 3. A first threaded segment and a second threaded segment 5 are respectively provided on the opposite surfaces of the two. This achieves the effect that when the first limiting block 4 descends to the limiting state, the first threaded segment and the second threaded segment 5 are precisely aligned and together form a complete and continuous threaded space, ensuring that the screw 12 of the clamping assembly 1 can be smoothly screwed in for precise adjustment. When the first limiting block 4 rises to the avoidance state, the first threaded segment disengages from the second threaded segment 5, releasing the threaded constraint on the screw 12.

[0026] Please refer to Figure 2 The limiting component 2 also includes: a first guide plate 6, which is connected to the second limiting block 3; a second guide plate 7, which is installed on the side of the second limiting block 3 away from the first guide plate 6; and the first limiting block 4 is movably disposed between the first guide plate 6 and the second guide plate 7 in the vertical direction.

[0027] By adopting the above technical solution, the first guide plate 6 and the second guide plate 7 are respectively located on both sides of the second limiting block 3, and the first limiting block 4 is movably set in the vertical direction between them, which achieves the effect of providing stable and parallel double-sided guide support for the lifting and lowering movement of the first limiting block 4, effectively preventing the first limiting block 4 from tilting or getting stuck during the lifting and lowering process, ensuring the smoothness of its state switching and the alignment accuracy with the second limiting block 3.

[0028] Please refer to Figure 2 The limiting component 2 further includes: a first guide block 8, a first limiting block 4 having a first groove adapted to the first guide block 8, the first guide block 8 being located in the first groove, the first guide block 8 being installed on the side of the first guide plate 6 near the first limiting block 4, the first guide block 8 extending vertically, and the first limiting block 4 being movably arranged along the extension direction of the first guide block 8; a second guide block 9, a second limiting block 3 having a second groove adapted to the second guide block 9, the second guide block 9 being located in the second groove, the second guide block 9 being installed on the side of the second guide plate 7 facing the second limiting block 3, the second guide block 9 extending vertically, and the second limiting block 3 being movably arranged along the extension direction of the second guide block 9; the second guide block 9 being opposite to and offset from the first guide block 8.

[0029] By adopting the above technical solution, a first groove is provided in the first limiting block 4 to accommodate the first guide block 8 installed on the first guide plate 6, and a second groove is provided in the second limiting block 3 to accommodate the second guide block 9 installed on the second guide plate 7. The first guide block 8 and the second guide block 9 are relatively staggered, which achieves the effect of more precise linear guidance and constraint of the movement of the first limiting block 4 and the second limiting block 3 by using the embedded cooperation of the groove and the guide block, significantly improving the movement stability; at the same time, the staggered arrangement avoids movement interference and ensures the reliability of the mechanism operation.

[0030] Please refer to Figure 1 The clamping assembly 1 includes: a positioning plate 10; a clamping plate 11, which is movably disposed relative to the positioning plate 10 and cooperates with the positioning plate 10 to fix the material to be cut; and a screw 12, which is rotatably disposed on the side of the clamping plate 11 away from the positioning plate 10. When the first limiting block 4 is in the limiting state, the screw 12 is threadedly engaged with the threaded space; when the first limiting block 4 is in the avoidance state, the screw 12 is movably disposed relative to the first limiting block 4.

[0031] Furthermore, a first hand-held part 13 is provided at the end of the screw 12 away from the clamping plate 11 to facilitate the operator to rotate the screw 12.

[0032] By adopting the above technical solution, a clamping assembly 1 including a positioning plate 10, a movable abutment plate 11, and a screw 12 is set up, and the screw 12 is rotatably set on the abutment plate 11. This achieves the effect of driving the abutment plate 11 to move precisely to clamp the workpiece by rotating the screw 12 (using the first hand-held part 13) in the limited state, and allows the operator to directly push the screw 12 or the abutment plate 11 to move quickly to adapt to workpieces of different sizes in the avoidance state. The rotatable connection design between the screw 12 and the abutment plate 11 ensures that the screw 12 itself does not need to be rotated during rapid movement.

[0033] Please refer to Figure 2 The cold cutting saw also includes a fixing component 14, which is disposed on the first guide plate 6 and / or the second guide plate 7. The fixing component 14 is used to fix the first limiting block 4 and the second limiting block 3.

[0034] By adopting the above technical solution and setting the fixing component 14, the first limiting block 4 can be reliably fixed in the position when it is in the limiting state, preventing the first limiting block 4 from accidentally moving upward and disengaging from the limiting state during the threaded clamping of the workpiece, thus ensuring the stability and safety of the clamping process.

[0035] Please refer to Figure 2 The fixing component 14 includes: a fixing plate 16, which is rotatably disposed; a rotating shaft 15, which is rotatably disposed on the first guide plate 6 and / or the second guide plate 7, with the fixing plate 16 disposed on the side of the rotating shaft 15 away from the first guide plate 6; wherein, when it is necessary to fix the first limiting block 4, the fixing plate 16 abuts against the first limiting block 4.

[0036] By adopting the above technical solution, the fixing component 14 specifically includes a fixing plate 16 that can rotate around the rotating shaft 15, which achieves the effect of manually rotating the fixing plate 16 so that its end abuts against the side or top surface of the first limiting block 4. The mechanical locking of the first limiting block 4 in the limiting state is achieved by using a simple lever principle and friction. The structure is simple and reliable.

[0037] Please refer to Figure 3 The second limiting block 3 is provided with a lifting space; the cold cutting saw also includes a lifting assembly 17, which has a lifting part and a rotating part. The lifting part abuts against the first limiting block 4 and is rotatably disposed in the lifting space; the rotating part is rotatably disposed and connected to the lifting part. The rotating part is used to drive the lifting part to rotate so as to drive the first limiting block 4 away from the second limiting block 3.

[0038] By adopting the above technical solution, a lifting space is set in the second limiting block 3 and a lifting component 17 is installed. Its lifting part abuts against the first limiting block 4, thereby achieving the effect of driving the lifting part to rotate by operating the rotating part, and then lifting the first limiting block 4 from the limiting state to the avoidance state. This provides a labor-saving and convenient state switching method, which is especially suitable for occasions where the first limiting block 4 is heavy or needs to be switched frequently.

[0039] Please refer to Figure 3 The lifting assembly 17 includes: a cam 18, which is rotatably configured and abuts against a first limiting block 4 to drive the first limiting block 4 away from a second limiting block 3; and a rotating rod 19, which passes through the second limiting block 3 into the lifting space and is connected to the side of the cam 18 away from the threaded space. The cam 18 is the lifting part, and the rotating rod 19 is the rotating part. Further, a second handgrip 20 is provided at the end of the rotating rod 19 away from the cam 18.

[0040] By adopting the above technical solution, the lifting part is specifically defined as cam 18, and the rotating part is specifically defined as rotating rod 19 with second hand-held part 20. This achieves the effect of driving cam 18 to rotate by manually rotating rotating rod 19 (using second hand-held part 20). By utilizing the change in the profile of cam 18, its rotational motion is converted into linear lifting motion on the first limit block 4, thus realizing easy switching of the state of the first limit block 4.

[0041] Please refer to Figure 1 The cold cutting saw also includes: a cold cutting saw body 21; a base 22, on which the cold cutting saw body 21, a clamping component 1, and a limiting component 2 are disposed, with the clamping component 1 and the cold cutting saw body 21 spaced apart.

[0042] By adopting the above technical solution, a base 22 is set up and the cold cutting saw body 21, clamping component 1 and limiting component 2 are integrated and installed on it, which achieves the effect of providing a stable working platform and ensuring the stability of the entire device during cutting operations. At the same time, the reasonable spatial layout (clamping component 1 and cold cutting saw body 21 are set at intervals) ensures the operating space and safety.

[0043] Furthermore, the cold-cutting saw body 21 includes a rotating seat, which is mounted on a base 22; a power chamber, which is rotatably arranged and connected to the rotating seat via a torsion spring, so that the power chamber rotates when force is applied and remains vertical when no force is applied; a motor is installed inside the power chamber, and the output shaft of the motor is connected to the saw blade drive to drive the saw blade to rotate and cut the material.

[0044] Working principle: The operator first places the material to be cut between the positioning plate 10 and the clamping plate 11 on the base 22. When the material size differs significantly from the current clamping position, the operator needs to switch to the quick adjustment mode: the operator holds the second hand-held part 20 and rotates the rotating rod 19, causing the cam 18 to rotate within the lifting space of the second limiting block 3. The contour of the cam 18 pushes the first limiting block 4 to rise vertically along the first guide block 8 and the second guide block 9 to the avoidance state. At this time, the first threaded section of the first limiting block 4 separates from the second threaded section 5 of the second limiting block 3. After releasing the thread constraint, the operator can directly hold the first hand-held part 13 and push the screw 12, causing the clamping plate 11 to slide quickly along the guide mechanism to a position close to the material (at this time, the screw 12 is not in contact with the separated first limiting block 4 and second limiting block 3).

[0045] When switching to the precision clamping mode: The operator rotates the rotating rod 19 in the opposite direction to reset the cam 18. The first limiting block 4 is lowered to the limiting state by gravity or manual pushing, and its first threaded section is precisely aligned with the second threaded section 5 of the second limiting block 3 to form a continuous threaded space. Then, the fixing plate 16 of the fixing assembly 14 is rotated around the rotating shaft 15 to press against the side of the first limiting block 4 to achieve mechanical locking. At this time, rotating the first hand-held part 13 drives the screw 12 to screw into the threaded space, driving the clamping plate 11 to move precisely towards the positioning plate 10 until the material is clamped. After clamping is completed, the cold cutting saw body 21 is operated to perform the cutting operation.

[0046] This process significantly reduces the number of rotations of the screw 12 and improves clamping efficiency by switching the state of the limit component 2 (releasing the thread constraint in the avoidance state to achieve rapid movement, and restoring the thread transmission in the limit state to achieve precise clamping).

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0048] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0049] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0050] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0051] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A cold saw, characterized in that, include: Clamping component (1); The limiting component (2) has a first limiting part and a second limiting part. The first limiting part is movably disposed relative to the second limiting part. The first limiting part has an avoidance state and a limiting state relative to the clamping component (1). When the first limiting part is in the limiting state, the first limiting part is connected to the second limiting part and forms a threaded space, and at least a portion of the clamping assembly (1) is threadedly engaged with the threaded space; when the first limiting part is in the avoidance state, the first limiting part is away from the second limiting part, and at least a portion of the clamping assembly (1) is movably disposed relative to the first limiting part and the second limiting part.

2. A cold saw according to claim 1, characterised in that The limiting component (2) includes: Second limiting block (3); The first limiting block (4) is located above the second limiting block (3) and is movably arranged in the vertical direction. The first limiting block (4) has a clearance state and a limiting state for the clamping assembly (1).

3. A cold saw according to claim 2, wherein, The limiting component (2) further includes: The first guide plate (6) is connected to the second limiting block (3); The second guide plate (7) is installed on the side of the second limiting block (3) away from the first guide plate (6), and the first limiting block (4) is movably disposed between the first guide plate (6) and the second guide plate (7) along the vertical direction.

4. A cold saw according to claim 3, wherein, The limiting component (2) further includes: The first guide block (8) has a first groove adapted to the first guide block (8) on the first limiting block (4). The first guide block (8) is located in the first groove. The first guide block (8) is installed on the side of the first guide plate (6) near the first limiting block (4). The first guide block (8) extends along the vertical direction. The first limiting block (4) is movably set along the extension direction of the first guide block (8). The second guide block (9) has a second groove adapted to the second guide block (9) on the second limiting block (3). The second guide block (9) is located in the second groove. The second guide block (9) is installed on the side of the second guide plate (7) facing the second limiting block (3). The second guide block (9) extends along the vertical direction. The second limiting block (3) is movably set along the extension direction of the second guide block (9). The second guide block (9) is opposite to and offset from the first guide block (8).

5. The cold saw of claim 2, wherein, The clamping assembly (1) includes: Positioning plate (10); A clamping plate (11) is movably disposed relative to the positioning plate (10), and the clamping plate (11) cooperates with the positioning plate (10) to fix the material to be cut; The screw (12) is rotatably disposed on the side of the abutment plate (11) away from the positioning plate (10). When the first limiting block (4) is in the limiting state, the screw (12) is threadedly engaged with the thread space. When the first limiting block (4) is in the avoidance state, the screw (12) is movably disposed relative to the first limiting block (4).

6. The cold saw of claim 3, wherein, The cold cutting saw also includes a fixing component (14), which is disposed on the first guide plate (6) and / or the second guide plate (7), and the fixing component (14) is used to fix the first limiting block (4) and the second limiting block (3).

7. A cold saw according to claim 6, wherein, The fixing component (14) includes: A fixing plate (16) is rotatably disposed; A rotating shaft (15) is rotatably mounted on the first guide plate (6) and / or the second guide plate (7). A fixing plate (16) is provided on the side of the rotating shaft (15) away from the first guide plate (6). When the first limiting block (4) needs to be fixed, the fixing plate (16) abuts against the first limiting block (4).

8. The cold saw of claim 2, wherein, The second limiting block (3) is provided with a lifting space; The cold cutting saw also includes a lifting assembly (17), which has a lifting part and a rotating part. The lifting part abuts against the first limiting block (4) and is rotatably disposed in the lifting space. The rotating part is rotatably disposed and connected to the lifting part. The rotating part is used to drive the lifting part to rotate so as to drive the first limiting block (4) away from the second limiting block (3).

9. A cold saw according to claim 8, wherein, The lifting assembly (17) includes; Cam (18), which is rotatably configured, abuts against the first limiting block (4) so ​​as to drive the first limiting block (4) away from the second limiting block (3) through the cam (18). Rotating rod (19) passes through the second limiting block (3) into the lifting space and is connected to the side of the cam (18) away from the threaded space.

10. The cold saw of claim 1, wherein, The cold cutting saw also includes: Cold cutting saw body (21); The base (22) is provided with a cold cutting saw body (21), a clamping component (1), and a limiting component (2). The clamping component (1) is spaced apart from the cold cutting saw body (21).

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