A double-claw synchronous telescopic long-stroke heavy load clamp and a high-precision positioning method thereof

Abstract

The application discloses a double-claw synchronous telescopic long-stroke heavy-load clamp and a high-precision positioning method thereof, and relates to the technical field of workpiece clamping devices.The clamp comprises a driving box, stroke boxes are fixedly connected to the two sides of the driving box, a driving mechanism is fixedly connected inside the driving box, and the driving mechanism comprises a double-shaft motor fixedly connected inside the driving box.The driving mechanism realizes synchronous telescopic movement of the clamping plate through the power distribution design of the double-shaft motor combined with an electromagnetic clutch assembly;when the first electromagnetic clutch is powered, power is transmitted to the second screw rod with reverse threads through the worm and the worm wheel to drive the clamping plate to move towards each other, the synchronous movement of the double claws under the long stroke is ensured, and the positioning deviation caused by the asynchronization of the traditional clamp is avoided;meanwhile, the self-locking property of the worm and the worm wheel enhances the clamping stability, and the clamp is especially suitable for heavy-load working conditions, and the positioning precision and repeatability are significantly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of workpiece clamping devices, and in particular relates to a double-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method. Background Technology

[0002] The dual-jaw synchronous telescopic long-stroke heavy-duty clamp is a clamping device used in industrial automation, machining, and assembly. Its core function is to achieve high-precision positioning and stable clamping of large workpieces. The clamp adopts a dual-jaw synchronous telescopic structure and achieves a wide range of opening and closing through a long-stroke drive mechanism. It is suitable for clamping workpieces of different sizes. Its role is to improve clamping efficiency, enhance load-bearing capacity, and ensure the stability of workpieces during processing or handling, avoiding displacement caused by vibration or external forces.

[0003] Existing heavy-duty clamps still have some problems during use. For example, they are usually driven by hydraulic or pneumatic systems, which result in complex structures, high maintenance costs, and slow response speeds. In addition, ordinary mechanical clamps are prone to asynchrony during long-stroke movements, leading to a decrease in clamping accuracy. In existing technologies, locking after clamping often relies on additional braking devices, which increases system complexity and makes it difficult to adaptively adjust the clamping force during clamping, affecting the workpiece positioning accuracy and stability.

[0004] To address these issues, we provide a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method. Through the structural cooperation of the driving mechanism, locking mechanism and clamping mechanism, it solves the problem that the existing heavy-duty clamps rely on additional braking devices for locking after clamping, which increases the system complexity and makes it difficult to adaptively adjust the clamping force during clamping.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0007] This invention relates to a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method, comprising a drive box, with stroke boxes fixedly connected to both sides of the drive box, and a drive mechanism fixedly connected inside the drive box. The drive mechanism includes a dual-axis motor fixedly connected inside the drive box, an electromagnetic clutch assembly fixedly connected to the output shaft of the dual-axis motor, a transmission assembly disposed inside the drive box, and a gear assembly disposed on one side of the drive box. A locking mechanism is provided at the bottom of the stroke box, the locking mechanism including a first screw disposed at the bottom of the stroke box and a locking toothed plate threadedly connected to the surface of the first screw. A clamping mechanism is provided at the bottom of the stroke box, the clamping mechanism including a clamping plate disposed at the bottom of the stroke box, an electromagnetic plate fixedly connected inside the clamping plate, and an adaptive component disposed inside the clamping plate.

[0008] The present invention is further configured such that the electromagnetic clutch assembly includes a first electromagnetic clutch and a second electromagnetic clutch fixedly connected to the output shaft of the dual-axis motor. Both the first electromagnetic clutch and the second electromagnetic clutch are fixedly connected to the drive box. The first electromagnetic clutch is disposed on the side closer to the transmission assembly, and the second electromagnetic clutch is disposed on the side closer to the gear assembly.

[0009] The present invention is further configured such that the transmission assembly includes a worm gear movably connected inside the drive housing via a bearing, a worm wheel meshing on the surface of the worm gear, a driven synchronous pulley fixedly connected to the surface of the worm gear, and a driving synchronous pulley connected via a synchronous belt drive.

[0010] The present invention is further configured such that a movable component is provided inside the stroke box, the movable component including a second screw movably connected to the inside of the stroke box via a bearing, a threaded sleeve threaded to the surface of the second screw, and a movable plate fixedly connected to the bottom of the threaded sleeve, wherein there are two second screws and the thread directions of the two second screws are opposite.

[0011] The present invention is further configured such that the gear assembly includes a driving gear disposed on one side of the drive housing and a driven gear meshing on the surface of the driving gear.

[0012] The present invention is further configured such that the bottom of the drive box is fixedly connected to the front and rear sides of the travel box, the first screw is movably connected to the support plate through a bearing, a slide rod is fixedly connected to one side of the support plate, and a sliding through hole adapted to the slide rod is opened inside the locking tooth plate, and the slide rod is located inside the sliding through hole.

[0013] The invention is further configured such that a movable through groove is provided inside the stroke box, a support groove is provided inside the stroke box, a support pulley is provided inside the support groove, and a support rod is fixedly connected inside the stroke box.

[0014] The invention is further configured such that the adaptive component includes a spring fixedly connected to one side of the electromagnetic plate, and a contact rod disposed inside the spring, the contact rod being made of a magnetic material.

[0015] The present invention is further configured such that a reset plate is fixedly connected to the surface of the contact rod, and an anti-disengagement plate is fixedly connected to the other end of the contact rod.

[0016] A method for using a dual-jaw synchronous telescopic long-stroke heavy-duty clamp includes the following steps: S1: When it is necessary to clamp the workpiece, the external controller starts the dual-axis motor and energizes the first electromagnetic clutch. At this time, the second electromagnetic clutch is de-energized. The dual-axis motor can only drive the active synchronous pulley to rotate. The active synchronous pulley drives the driven synchronous pulley to rotate through the synchronous belt. The driven synchronous pulley drives the worm to rotate. The worm drives the worm wheel to rotate. The two worm wheels drive the two second screws to rotate respectively. The second screws drive the screw sleeve to move. The screw sleeve drives the moving plate to move. The moving plate drives the two clamping plates to move towards the workpiece. S2: When the contact rod on the clamping plate comes into contact with the workpiece, there are differences on the surface of the workpiece. At this time, the protruding position will squeeze the contact rod and push the contact rod into the clamping plate. At this time, the spring is compressed. When the contact rod is in contact with the workpiece, the electromagnetic plate is energized. The electromagnetic plate magnetically attracts the contact rod, which enhances the local clamping force and adapts to the irregular shape of the workpiece. S3: After the clamping action is completed, the first electromagnetic clutch is de-energized and the second electromagnetic clutch is energized. At this time, the power of the dual-shaft motor is transmitted to the drive gear through the second electromagnetic clutch. The drive gear drives the driven gear to rotate, and the driven gear drives the first screw to rotate. The first screw drives the locking tooth plate to move towards the moving plate, so that the locking tooth plate meshes with the locking tooth groove of the moving plate, locking and limiting the moving plate to prevent slippage during the clamping process. S4: After clamping is completed, reverse the above steps to disengage the locking tooth plate from the moving plate. The clamping plate is reset under the drive of the moving component. The support pulley and support rod ensure the smooth movement of the moving plate and avoid uneven load. The slide rod and support plate maintain the linear movement of the locking mechanism. The overall structure ensures stability under heavy load through the rigid housing and transmission self-locking. At the same time, the clamping mechanism adaptively conforms to the workpiece surface to ensure the clamping accuracy of the workpiece.

[0017] The present invention has the following beneficial effects.

[0018] 1. This invention utilizes a power distribution design combining a dual-axis motor and an electromagnetic clutch assembly to drive the synchronous extension and retraction of the clamping plates. When the first electromagnetic clutch is energized, the power is transmitted through the worm and worm wheel to rotate the second screw with a reverse thread, driving the clamping plates to move towards each other. This motion process ensures the synchronicity of the two jaws under long strokes, avoiding positioning deviations caused by asynchrony in traditional clamps. At the same time, the self-locking characteristics of the worm and worm wheel enhance clamping stability, making it particularly suitable for heavy-duty conditions and significantly improving positioning accuracy and repeatability.

[0019] 2. This invention uses a gear assembly to drive the first screw to move the locking tooth plate laterally, which meshes with the locking tooth groove of the moving plate to form a mechanical self-lock. This movement process takes effect immediately after clamping, without the need for an additional braking device, which simplifies the structure and improves the response speed. The cooperation between the locking tooth plate and the slide bar ensures the stability of the linear motion, effectively preventing clamping loosening caused by heavy load or vibration, and keeping the workpiece stable throughout the processing.

[0020] 3. This invention utilizes the synergistic effect of a spring and an electromagnetic plate to dynamically conform the contact rod to the workpiece surface. When the contact rod is compressed and retracts, the electromagnetic plate is energized to attract the contact rod, enhancing the local clamping force. This motion process achieves adaptive clamping of irregular workpieces, ensuring high-precision positioning while avoiding surface damage caused by rigid clamping. It is especially suitable for large or easily deformable workpieces, balancing the dual requirements of clamping stability and workpiece protection.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a three-dimensional view of a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0024] Figure 2 This is a bottom view of a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0025] Figure 3 This is a cross-sectional view of the drive box and the stroke box in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0026] Figure 4 This is a structural diagram of the drive mechanism in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0027] Figure 5This is a structural diagram of the moving component in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0028] Figure 6 This is a partial cross-sectional view of the stroke box in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0029] Figure 7 This is a front view of the support groove and support pulley in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0030] Figure 8 This is a structural diagram of the locking mechanism in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0031] Figure 9 This is a cross-sectional view of the clamping plate in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0032] Figure 10 This is a structural diagram of the adaptive component in a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method.

[0033] In the attached diagram: 1. Drive box; 2. Stroke box; 3. Drive mechanism; 301. Dual-shaft motor; 302. Electromagnetic clutch assembly; 3021. First electromagnetic clutch; 3022. Second electromagnetic clutch; 303. Transmission assembly; 3031. Worm gear; 3032. Worm wheel; 3033. Driven synchronous pulley; 3034. Driving synchronous pulley; 304. Gear assembly; 3041. Driving gear; 3042. Driven gear; 4. Locking mechanism; 401. First screw; 402. Locking tooth plate; 5. Clamping mechanism; 501. Clamping plate; 502. Electromagnetic plate; 503. Adaptive component; 5031. Spring; 5032. Contact rod; 6. Moving component; 601. Second screw; 602. Screw sleeve; 603. Moving plate; 7. Support plate; 8. Slide rod; 9. Support pulley; 10. Support rod; 11. Reset plate; 12. Anti-detachment plate. Detailed Implementation

[0034] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments. Example

[0035] Please see Figures 1-10This invention relates to a dual-jaw synchronous telescopic long-stroke heavy-duty clamp and its high-precision positioning method, comprising a drive box 1, with stroke boxes 2 fixedly connected to both sides of the drive box 1, a drive mechanism 3 fixedly connected inside the drive box 1, the drive mechanism 3 including a dual-axis motor 301 fixedly connected inside the drive box 1, an electromagnetic clutch assembly 302 fixedly connected to the output shaft of the dual-axis motor 301, a transmission assembly 303 disposed inside the drive box 1, and a gear assembly 304 disposed on one side of the drive box 1, a locking mechanism 4 disposed at the bottom of the stroke box 2, the locking mechanism 4 including a first screw 401 disposed at the bottom of the stroke box 2, and a locking toothed plate 402 threadedly connected to the surface of the first screw 401, and a clamping mechanism 5 disposed at the bottom of the stroke box 2, the clamping mechanism 5 including a clamping plate 501 disposed at the bottom of the stroke box 2, an electromagnetic plate 502 fixedly connected inside the clamping plate 501, and an adaptive assembly 503 disposed inside the clamping plate 501.

[0036] Specifically: Drive mechanism 3 serves as the core power source for the clamp. Power distribution is achieved through a dual-axis motor 301 combined with an electromagnetic clutch assembly 302, controlling the synchronous extension and retraction of the grippers. One end of the dual-axis motor 301 drives the second screw 601 with a reverse thread via a worm gear 3031 and worm wheel 3032, rotating the clamping plates 501 and causing them to move in opposite directions. The other end drives the locking mechanism 4 via a gear assembly 304. The electromagnetic clutch assembly 302 switches the power path, ensuring independent control of clamping and locking actions, thereby improving response speed and operational flexibility. The locking mechanism 4, with the first screw 401 and locking toothed plate 402 working together, rigidly fixes the moving plate 603 after clamping. Its core function is to eliminate clamping. Potential displacement risks during the process: When the clamping plate 501 is in place, the gear assembly 304 drives the locking tooth plate 402 to move laterally and engage with the locking tooth groove of the moving plate 603 to form a mechanical self-lock. This design avoids the problem of relying on additional braking devices in the traditional way and significantly improves the clamping stability under heavy load conditions. Through the setting of the clamping mechanism 5, the electromagnetic plate 502 and the adaptive component 503 cooperate to achieve high-precision fit and flexible clamping of the workpiece. The contact rod 5032 adapts to the surface shape of the workpiece under the action of the spring 5031. After the electromagnetic plate 502 is energized, it attracts the contact rod 5032 to enhance the local clamping force and ensure that the irregular workpiece is uniformly stressed. This mechanism not only ensures the clamping accuracy, but also avoids the workpiece damage caused by rigid clamping. It is especially suitable for large workpieces with uneven surfaces. Example

[0037] Please see Figures 1-10Based on Embodiment 1, the electromagnetic clutch assembly 302 includes a first electromagnetic clutch 3021 and a second electromagnetic clutch 3022 fixedly connected to the output shaft of the dual-axis motor 301. Both the first electromagnetic clutch 3021 and the second electromagnetic clutch 3022 are fixedly connected to the drive housing 1. The first electromagnetic clutch 3021 is located near the transmission assembly 303, and the second electromagnetic clutch 3022 is located near the gear assembly 304. The transmission assembly 303 includes a worm 3031 movably connected to the inside of the drive housing 1 via bearings, a worm wheel 3032 meshing with the surface of the worm 3031, a driven synchronous pulley 3033 fixedly connected to the surface of the worm 3031, and a driving synchronous pulley 3034 connected via a synchronous belt. There are two worms 3031, two worm wheels 3032, and two driven synchronous pulleys 3033. The driving synchronous pulley 3034 is fixedly connected to the first electromagnetic clutch 3021. The unit is equipped with a moving component 6, which includes a second screw 601 movably connected to the inside of the stroke box 2 via a bearing, a threaded sleeve 602 threadedly connected to the surface of the second screw 601, and a moving plate 603 fixedly connected to the bottom of the threaded sleeve 602. There are two second screws 601, and the thread directions of the two second screws 601 are opposite. The end of the second screw 601 away from the stroke box 2 extends into the inside of the drive box 1 and is fixedly connected to the worm gear 3032. The top of the clamping plate 501 is fixedly connected to the bottom of the moving plate 603. The moving plate 603 has a locking tooth groove on the side near the locking tooth plate 402. The gear assembly 304 includes a driving gear 3041 disposed on one side of the drive box 1 and a driven gear 3042 meshing on the surface of the driving gear 3041. The driving gear 3041 is fixedly connected to the second electromagnetic clutch 3022 via a rotating rod, and the driven gear 3042 is fixedly connected to the first screw 401.

[0038] Specifically: the electromagnetic clutch assembly 302 is used to switch the power output direction of the dual-axis motor 301; the transmission assembly 303 is used to transmit the power from one end of the dual-axis motor 301 to the worm 3031 and worm wheel 3032, thereby driving the second screw 601 to rotate; the moving assembly 6 is used to drive the two clamping plates 501 to move towards each other; and the gear assembly 304 is used to transmit the power from the other end of the dual-axis motor 301 to the first screw 401, thereby driving the locking gear plate 402 to move. Example

[0039] Please see Figures 1-10Based on Embodiments 1 and 2, support plates 7 are fixedly connected to the bottom of the drive box 1 and the front and rear sides of the travel box 2. The first screw 401 is movably connected to the support plate 7 via bearings. A slide rod 8 is fixedly connected to one side of the support plate 7. A sliding through hole adapted to the slide rod 8 is opened inside the locking tooth plate 402. The slide rod 8 is located inside the sliding through hole. A movable through groove is opened inside the travel box 2. A support groove is opened inside the travel box 2. A support pulley 9 is set inside the support groove. A support rod 10 is fixedly connected inside the travel box 2. The movable through groove is adapted to the movable plate 603. The top of the support pulley 9 is fixed to the bottom of the movable plate 603. The connecting and moving plate 603 has a support through hole adapted to the support rod 10. The adaptive component 503 includes a spring 5031 fixedly connected to one side of the electromagnetic plate 502, and a contact rod 5032 disposed inside the spring 5031. The contact rod 5032 is made of magnetic material. A reset plate 11 is fixedly connected to the surface of the contact rod 5032. An anti-detachment plate 12 is fixedly connected to the other end of the contact rod 5032. The electromagnetic plate 502 and the clamping plate 501 both have adjustment through holes adapted to the contact rod 5032. The reset plate 11 is located inside the clamping plate 501. Multiple contact rods 5032 are disposed in a group inside the clamping plate 501.

[0040] Specifically: the support plate 7 and slide bar 8 are used to support the first screw 401 and the locking tooth plate 402, allowing the locking tooth plate 402 to move smoothly; the moving through groove allows the moving plate 603 to extend downward to the bottom of the travel box 2; the support pulley 9 and support rod 10 are used to support the moving plate 603, improving the load-bearing capacity of the device; the spring 5031 resets the contact rod 5032 after the pressure is lost; the reset plate 11 limits the spring 5031 to pass between the electromagnetic plate 502 and the reset plate 11; and the anti-disengagement plate 12 prevents the contact rod 5032 from popping outward.

[0041] The working principle of this invention is as follows: When it is necessary to clamp the workpiece, the external controller starts the dual-axis motor 301 and energizes the first electromagnetic clutch 3021. At this time, the second electromagnetic clutch 3022 is de-energized. At this time, the dual-axis motor 301 can only drive the active synchronous pulley 3034 to rotate. The active synchronous pulley 3034 drives the driven synchronous pulley 3033 to rotate through the synchronous belt. The driven synchronous pulley 3033 drives the worm gear 3031 to rotate. The worm gear 3031 drives the worm wheel 3032 to rotate. The two worm wheels 3032 drive the two second screws 601 to rotate respectively. The second screws 601 drive the screw sleeve 602 to move. The screw sleeve 602 drives the moving plate 603 to move. The moving plate 603 drives the two clamping plates 501 to move towards the workpiece. When the contact rod 5032 on the clamping plate 501 comes into contact with the workpiece, there are differences on the surface of the workpiece. At this time, the protruding position will squeeze the contact rod 5032, squeezing the contact rod 5032 into the clamping plate 501. At this time, the spring 5031 is compressed. When the contact rod 5032 is in contact with the workpiece, it energizes the electromagnetic plate 502. The electromagnetic plate 502 magnetically attracts the contact rod 5032, enhancing the local clamping force and adapting to the irregular shape of the workpiece. After the clamping action is completed, the first electromagnetic clutch 3021 is de-energized and the second electromagnetic clutch 3022 is energized. At this time, the power of the dual-shaft motor 301 is transmitted to the drive gear 3041 through the second electromagnetic clutch 3022. The drive gear 3041 drives the driven gear 3042 to rotate, and the driven gear 3042 drives the first screw 401 to rotate. The first screw 401 drives the locking tooth plate 402 to move towards the moving plate 603, so that the locking tooth plate 402 meshes with the locking tooth groove of the moving plate 603, locking and limiting the moving plate 603 to prevent slippage during the clamping process. After clamping is completed, the above steps are reversed to disengage the locking tooth plate 402 from the moving plate 603. The clamping plate 501 is reset under the action of the moving component 6. The support pulley 9 and the support rod 10 ensure the smooth movement of the moving plate 603 and avoid uneven load. The slide rod 8 and the support plate 7 maintain the linear movement of the locking mechanism 4. The overall structure ensures stability under heavy load through the rigid housing and transmission self-locking. At the same time, the clamping mechanism 5 adaptively conforms to the workpiece surface to ensure the clamping accuracy of the workpiece.

[0042] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dual-jaw synchronous telescopic long-stroke heavy-duty clamp, comprising a drive housing (1), characterized in that: Both sides of the drive box (1) are fixedly connected to the stroke box (2); The drive box (1) is fixedly connected to a drive mechanism (3). The drive mechanism (3) includes a dual-axis motor (301) fixedly connected to the drive box (1), an electromagnetic clutch assembly (302) fixedly connected to the output shaft of the dual-axis motor (301), a transmission assembly (303) disposed inside the drive box (1), and a gear assembly (304) disposed on one side of the drive box (1). The bottom of the travel box (2) is provided with a locking mechanism (4), which includes a first screw (401) provided at the bottom of the travel box (2) and a locking tooth plate (402) threadedly connected to the surface of the first screw (401). The bottom of the travel box (2) is provided with a clamping mechanism (5). The clamping mechanism (5) includes a clamping plate (501) provided at the bottom of the travel box (2), an electromagnetic plate (502) fixedly connected inside the clamping plate (501), and an adaptive component (503) provided inside the clamping plate (501).

2. The dual-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The electromagnetic clutch assembly (302) includes a first electromagnetic clutch (3021) and a second electromagnetic clutch (3022) fixedly connected to the output shaft of the dual-shaft motor (301). Both the first electromagnetic clutch (3021) and the second electromagnetic clutch (3022) are fixedly connected to the drive box (1). The first electromagnetic clutch (3021) is located on the side closer to the transmission assembly (303), and the second electromagnetic clutch (3022) is located on the side closer to the gear assembly (304).

3. The double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The transmission assembly (303) includes a worm (3031) movably connected to the inside of the drive box (1) via a bearing, a worm wheel (3032) meshing with the surface of the worm (3031), a driven synchronous pulley (3033) fixedly connected to the surface of the worm (3031), and a driving synchronous pulley (3034) connected via a synchronous belt drive.

4. The double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The travel box (2) is provided with a moving component (6). The moving component (6) includes a second screw (601) movably connected to the inside of the travel box (2) via a bearing, a threaded sleeve (602) threadedly connected to the surface of the second screw (601), and a moving plate (603) fixedly connected to the bottom of the threaded sleeve (602). There are two second screws (601), and the thread directions on the surfaces of the two second screws (601) are opposite.

5. A double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The gear assembly (304) includes a drive gear (3041) disposed on one side of the drive housing (1) and a driven gear (3042) meshing with the surface of the drive gear (3041).

6. The double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The bottom of the drive box (1) is fixedly connected to the front and rear sides of the travel box (2) with support plates (7). The first screw (401) is movably connected to the support plate (7) through a bearing. A slide rod (8) is fixedly connected to one side of the support plate (7). A sliding through hole adapted to the slide rod (8) is opened inside the locking tooth plate (402). The slide rod (8) is located inside the sliding through hole.

7. A double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The travel box (2) has a movable through groove inside, and a support groove is provided inside the travel box (2). A support pulley (9) is provided inside the support groove, and a support rod (10) is fixedly connected inside the travel box (2).

8. A double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, characterized in that: The adaptive component (503) includes a spring (5031) fixedly connected to one side of the electromagnetic plate (502) and a contact rod (5032) disposed inside the spring (5031), the contact rod (5032) being made of magnetic material.

9. A double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 8, characterized in that: A reset plate (11) is fixedly connected to the surface of the contact rod (5032), and an anti-disengagement plate (12) is fixedly connected to the other end of the contact rod (5032).

10. The method of using a double-jaw synchronous telescopic long-stroke heavy-duty clamp according to claim 1, based on any one of claims 1-9, characterized in that, Includes the following steps: S1: When it is necessary to clamp the workpiece, the external controller starts the dual-axis motor (301) and energizes the first electromagnetic clutch (3021). At this time, the second electromagnetic clutch (3022) is de-energized. At this time, the dual-axis motor (301) can only drive the active synchronous pulley (3034) to rotate. The active synchronous pulley (3034) drives the driven synchronous pulley (3033) to rotate through the synchronous belt. The driven synchronous pulley (3033) drives the worm (3031) to rotate. The worm (3031) drives the worm wheel (3032) to rotate. The two worm wheels (3032) drive the two second screws (601) to rotate respectively. The second screws (601) drive the screw sleeve (602) to move. The screw sleeve (602) drives the moving plate (603) to move. The moving plate (603) drives the two clamping plates (501) to move towards the workpiece. S2: When the contact rod (5032) on the clamping plate (501) comes into contact with the workpiece, there is a difference on the surface of the workpiece. At this time, the protruding position will squeeze the contact rod (5032) and squeeze the contact rod (5032) into the clamping plate (501). At this time, the spring (5031) is compressed. When the contact rod (5032) is in contact with the workpiece, the electromagnetic plate (502) is energized. The electromagnetic plate (502) magnetically attracts the contact rod (5032), enhances the local clamping force, and adapts to the irregular shape of the workpiece. S3: After the clamping action is completed, the first electromagnetic clutch (3021) is de-energized and the second electromagnetic clutch (3022) is energized. At this time, the power of the dual-shaft motor (301) is transmitted to the drive gear (3041) through the second electromagnetic clutch (3022). The drive gear (3041) drives the driven gear (3042) to rotate. The driven gear (3042) drives the first screw (401) to rotate. The first screw (401) drives the locking tooth plate (402) to move towards the moving plate (603), so that the locking tooth plate (402) meshes with the locking tooth groove of the moving plate (603) to lock and limit the moving plate (603) and prevent slippage during the clamping process. S4: After clamping is completed, reverse the above steps to disengage the locking tooth plate (402) from the moving plate (603). The clamping plate (501) is reset under the drive of the moving component (6). The support pulley (9) and the support rod (10) ensure that the moving plate (603) moves smoothly and avoids uneven load. The slide rod (8) and the support plate (7) maintain the linear movement of the locking mechanism (4). The overall structure ensures stability under heavy load through the rigid box and transmission self-locking. At the same time, the clamping mechanism (5) adapts to the surface of the workpiece to ensure the clamping accuracy of the workpiece.

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