Mechanical arm clamp for stretching belt pulley

Abstract

The invention belongs to the technical field of belt pulley assembly, and discloses a mechanical arm clamp for belt pulley stretching, which comprises a base, a rotating mechanism arranged on the outer wall of the base, and a four-jaw chuck arranged on the rotating mechanism, and the outer wall of the top end of the base is fixedly connected with a connecting bearing; the adjusting mechanism is mounted on the outer wall of the bottom end of the base; wherein the rotating mechanism comprises a rotating block, the inner wall of the rotating block is fixedly connected with an oil box, the outer wall of the bottom end of the oil box is elastically connected with a baffle through a connecting spring, and the outer wall of the bottom end of the baffle is fixedly connected with a convex block A; through the cooperation of the rotating block, the oil box and other structures, in the process that the rotating block drives the mechanical arm and the four-jaw chuck to rotate and align at the belt pulley, the baffle can open the oil outlet below the oil box, so that lubricating oil can automatically flow on the connecting bearing to lubricate the contact surface of the connecting bearing and the rotating block, and the maintenance frequency is reduced.

Description

Technical Field

[0001] This invention belongs to the field of belt pulley assembly technology, specifically a mechanical arm clamp for belt pulley stretching. Background Technology

[0002] The core of pulley assembly technology revolves around the matching and installation of pulleys and shaft parts, as well as the coordinated assembly of pulleys with belts, tensioning devices, and other components. Its technical goal is to achieve high efficiency, automation, and precision in pulley assembly, ensuring the reliability of the connection between pulleys and shafts, the coaxiality of transmission, and the operating efficiency and service life of the overall power transmission system.

[0003] The pulley stretching robotic arm fixture is a device used in the stretching process of pulley production or assembly. Through the linkage of modular gripper structure and robotic arm drive system, it can accurately position pulley workpieces and provide stable clamping force. While realizing the rapid clamping and unclamping of workpieces, it adapts to the requirements of workpiece coaxiality and clamping rigidity in the stretching process, avoids workpiece slippage or deformation during stretching, and ultimately improves the automation, accuracy and production efficiency of pulley stretching processing.

[0004] When fixing pulleys and stretching them on a robotic arm, the position of the robotic arm needs to be adjusted according to the position of different pulleys. The robotic arm may need to rotate on the base. However, with long-term rotation, the wear between the base and the robotic arm will be quite severe, which will eventually affect the smoothness of rotation. This requires the operator to disassemble and maintain the machine, which is quite cumbersome. Furthermore, some existing technologies do not have the effect of automatic lubrication of the rotating connection. To avoid wear, the operator needs to manually lubricate the connection. Therefore, a robotic arm clamp for stretching pulleys is proposed to address the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a robotic arm gripper for pulling pulleys.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mechanical arm clamp for pulling pulleys, comprising a base, wherein a connecting bearing is fixedly connected to the outer wall of the top end of the base, and further comprising: a rotating mechanism disposed on the outer wall of the base; a four-jaw chuck disposed on the rotating mechanism; and an adjusting mechanism installed on the outer wall of the bottom end of the base; The rotating mechanism includes a rotating block, an oil box fixedly connected to the inner wall of the rotating block, a baffle elastically connected to the bottom outer wall of the oil box via a connecting spring, a protrusion A fixedly connected to the bottom outer wall of the baffle, and a pressing assembly provided on the inner wall of the oil box. The pressing assembly includes a pressure plate, a connecting plate fixedly connected to the outer wall of the pressure plate, a slider elastically connected to the outer wall of the connecting plate via a reset spring, a moving block slidably connected to the inner wall of the rotating block, and a trigger block fixedly connected to the outer wall of the moving block.

[0007] Preferably, a protrusion B is fixedly connected to the outer wall of the connecting bearing, the rotating block is fixedly connected to the outer ring of the connecting bearing, and the rotating block is rotatably connected to the bottom outer wall of the base.

[0008] Preferably, one end of the connecting spring is fixedly connected to the outer wall of the baffle, the other end of the connecting spring is fixedly connected to the inner wall of the oil box, the baffle is slidably connected to the inner wall of the oil box, and the protrusion A is in contact with the protrusion B.

[0009] Preferably, a sliding rod is fixedly connected to the outer wall of the slider, an inclined groove is formed on the inner wall of the moving block, a stop rod is fixedly connected to the outer wall of the connecting bearing, a stop bar is fixedly connected to the outer wall of the connecting plate, an oil inlet is fixedly connected to the outer wall of the pressure plate, a pressure balancing port is fixedly connected to the top outer wall of the oil box, an air inlet pipe is fixedly connected to the outer wall of the pressure plate, and a one-way valve is fixedly connected to the inner wall of the air inlet pipe.

[0010] Preferably, the pressure plate is slidably connected to the inner wall of the oil box, one end of the return spring is fixedly connected to the outer wall of the slider, the other end of the return spring is fixedly connected to the outer wall of the connecting plate, the slider and the connecting plate are both slidably connected to the inner wall of the rotating block, and the slide rod is in contact with the inner wall of the inclined groove.

[0011] Preferably, the stop lever contacts the outer wall of the trigger block, and the stop bar is fixedly connected to the inner wall of the oil box.

[0012] Preferably, the oil inlet, air inlet, and pressure regulating port all penetrate the top outer wall of the rotating block.

[0013] Preferably, the adjusting mechanism includes a pull rod, the outer wall of which has a square groove, a connecting block is hinged to the outer wall of the pull rod via a hinge rod, a pulley is fixedly connected to the outer wall of the connecting block, a fixing block is fixedly connected to the outer wall of the base, and a square block is elastically connected to the inner wall of the fixing block via a telescopic spring.

[0014] Preferably, the pull rod is slidably connected to the inner wall of the bottom end of the base, the two ends of the hinge rod are respectively hinged to the outer wall of the pull rod and the connecting block, and the connecting block is slidably connected to the inner wall of the bottom end of the base.

[0015] Preferably, one end of the telescopic spring is fixedly connected to the outer wall of the square block, the other end of the telescopic spring is fixedly connected to the inner wall of the fixed block, the square block is slidably connected to the inner wall of the fixed block, and the square block is engaged with the square groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the cooperation of structures such as a rotating block and an oil box, allows the mechanical arm and the four-jaw chuck to rotate and align with the pulley during the process of the rotating block driving the mechanical arm to rotate. During this process, protrusion A and protrusion B will come into contact and be squeezed by protrusion B, causing the baffle to move upward. The baffle can open the oil outlet below the oil box, allowing the lubricating oil to flow automatically onto the connecting bearing, lubricating the contact surface between the connecting bearing and the rotating block, improving the smoothness of rotation, reducing wear, and lowering the frequency of maintenance. This invention, through the cooperation of structures such as pressure plate and moving block, allows the stop bar to press the trigger block during the rotation of the rotating block, causing it to move the moving block to both sides. The slider and pressure plate will move downwards, and the pressure plate can squeeze the lubricating oil, thereby increasing the speed of lubricating oil flow and improving lubrication efficiency. This invention utilizes a combination of a pull rod and a slider. By pulling the lever on the outer wall of the square block, the limit of the pull rod can be released. When the pull rod is pulled back and forth, the connecting block and pulley can be moved to both sides through the hinge rod. The position of the pulley can be adjusted to correspond to the position of the electric track, thus making it fully adaptable to electric tracks of different specifications and spacings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the rotating block and a schematic diagram of the disassembled structure of the connecting bearing of the present invention. Figure 3 This is a cross-sectional exploded view of the rotating block, oil box, and moving block of the present invention. Figure 4 This is a cross-sectional view of the rotating block, oil box, moving block, and an exploded structural diagram of the connecting bearing of the present invention. Figure 5 This is a schematic cross-sectional view of the oil box, moving block, and pressure plate of the present invention; Figure 6 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of section A.

[0018] In the picture: 100. Base; 200. Rotating mechanism; 201. Rotating block; 202. Oil box; 203. Connecting spring; 204. Baffle; 205. Protrusion A; 206. Protrusion B; 210. Connecting plate; 211. Return spring; 212. Slider; 213. Slide rod; 214. Moving block; 215. Inclined groove; 216. Trigger block; 217. Stop rod; 218. Stop bar; 219. Pressure plate; 2001, Intake pipe; 2002, Check valve; 2003, Oil filler port; 2004, Pressure balancing port; 300. Adjustment mechanism; 301. Pull rod; 302. Square groove; 303. Hinge rod; 304. Connecting block; 305. Pulley; 306. Fixing block; 307. Telescopic spring; 308. Square block; 400, Four-jaw chuck; 500, Connecting bearing. Detailed Implementation

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

[0020] like Figures 1 to 7 As shown, the present invention provides a mechanical arm gripper for pulling pulleys, including a base 100, a connecting bearing 500 fixedly connected to the top outer wall of the base 100, and further including: a rotating mechanism 200 disposed on the outer wall of the base 100, a four-jaw chuck 400 disposed on the rotating mechanism 200; and an adjusting mechanism 300 installed on the bottom outer wall of the base 100. The rotating mechanism 200 includes a rotating block 201, an oil box 202 is fixedly connected to the inner wall of the rotating block 201, a baffle 204 is elastically connected to the bottom outer wall of the oil box 202 via a connecting spring 203, a protrusion A205 is fixedly connected to the bottom outer wall of the baffle 204, and a pressing assembly is provided on the inner wall of the oil box 202; the pressing assembly includes a pressure plate 219, a connecting plate 210 is fixedly connected to the outer wall of the pressure plate 219, a slider 212 is elastically connected to the outer wall of the connecting plate 210 via a reset spring 211, a moving block 214 is slidably connected to the inner wall of the rotating block 201, and a trigger block 216 is fixedly connected to the outer wall of the moving block 214.

[0021] The above scheme is adopted: the four-jaw chuck 400 is fixed on the top outer wall of the rotating block 201. The rotating block 201 can be driven to rotate by a motor or other means. The pulley 305 under the base 100 can be installed on the track to move, driving the four-jaw chuck 400 to move synchronously. The pulley can be stretched by the four-jaw chuck 400. The four-jaw chuck 400 and the base 100 form the main body of the mechanical arm clamp for stretching the pulley. The rotating mechanism 200 can automatically lubricate the connecting surface between the connecting bearing 500 and the rotating block 201 when the mechanical arm needs to rotate, thereby reducing wear, improving the smoothness of rotation and extending service life, and reducing the frequency of maintenance. The oil box 202 is filled with lubricating oil, and an oil outlet is opened at its bottom. Under normal conditions, the oil outlet is kept closed by the action of the baffle 204.

[0022] like Figures 2 to 5 As shown, a protrusion B206 is fixedly connected to the outer wall of the connecting bearing 500, and a rotating block 201 is fixedly connected to the outer ring of the connecting bearing 500. The rotating block 201 is rotatably connected to the bottom outer wall of the base 100. One end of the connecting spring 203 is fixedly connected to the outer wall of the baffle 204, and the other end of the connecting spring 203 is fixedly connected to the inner wall of the oil box 202. The baffle 204 is slidably connected to the inner wall of the oil box 202, and protrusion A205 is in contact with protrusion B206.

[0023] Using the above scheme: When the rotating block 201 rotates, the robotic arm and the four-jaw chuck 400 move synchronously. Since the inner ring of the connecting bearing 500 is fixed on the base 100, while the outer ring is fixed to the inner wall of the rotating block 201, the inner ring of the connecting bearing 500 remains fixed when the rotating block 201 rotates, and the protrusion B206 is also fixed. When the rotating block 201 rotates, the protrusion A205 will contact the protrusion B206. Both contact surfaces are arc surfaces. After the protrusion A205 is squeezed by the fixed protrusion B206, it will drive the baffle. When 204 moves upward synchronously, it compresses the connecting spring 203. The upward movement of the baffle 204 opens the oil outlet below the oil box 202, allowing lubricating oil to flow from the outlet onto the contact surface between the inner ring of the connecting bearing 500 and the rotating block 201, and also into the space between the outer and inner rings of the connecting bearing 500, thus achieving a good automatic lubrication effect. When the rotating block 201 rotates until the protrusion A205 and protrusion B206 disengage, the connecting spring 203 causes the baffle 204 to move downward due to its elasticity, closing the oil outlet and stopping the oil flow.

[0024] like Figures 2 to 5 As shown, a sliding rod 213 is fixedly connected to the outer wall of the slider 212, an inclined groove 215 is opened on the inner wall of the moving block 214, a stop rod 217 is fixedly connected to the outer wall of the connecting bearing 500, a stop strip 218 is fixedly connected to the outer wall of the connecting plate 210, an oil inlet 2003 is fixedly connected to the outer wall of the pressure plate 219, a pressure balancing port 2004 is fixedly connected to the top outer wall of the oil box 202, an air inlet pipe 2001 is fixedly connected to the outer wall of the pressure plate 219, and a one-way valve 2002 is fixedly connected to the inner wall of the air inlet pipe 2001.

[0025] The above scheme is adopted: the extrusion assembly is used to further increase the oil pressure and accelerate the speed at which lubricating oil is left when the protrusion B206 extrudes the protrusion A205 and oil is discharged; both the trigger block 216 and the stop rod 217 are provided with inclined surfaces, the stop rod 217 cannot move, but the trigger block 216 can move into the inner wall of the rotating block 201 under the influence of the stop rod 217, driving the moving block 214 to move laterally to both sides in sync. The movement of the moving block 214 can drive the slider 212 to move vertically, and the return spring 211 can pull the connecting plate 210 and the pressure plate 219 to move vertically in sync. When the plate moves downward, it can squeeze the lubricating oil in the oil box 202 and make it flow out from the oil outlet at the bottom of the oil box 202. The baffle 218 is made of plastic. When the connecting plate 210 moves vertically, since the connecting plate 210 passes through the outer wall of the oil box 202, a through groove needs to be opened to allow the connecting plate 210 to move. The baffle 218 can keep the oil box 202 closed. The connecting plate 210 is provided with baffles 218 on both the upper and lower sides. The baffles 218 can be folded and extended. When the connecting plate 210 moves downward, the lower baffle 218 folds and the upper baffle 218 extends. The opposite is true when the connecting plate 210 moves upward.

[0026] like Figures 2 to 5 As shown, the pressure plate 219 is slidably connected to the inner wall of the oil box 202, one end of the return spring 211 is fixedly connected to the outer wall of the slider 212, and the other end of the return spring 211 is fixedly connected to the outer wall of the connecting plate 210. The slider 212 and the connecting plate 210 are both slidably connected to the inner wall of the rotating block 201. The slide rod 213 is in contact with the inner wall of the inclined groove 215. The stop rod 217 is in contact with the outer wall of the trigger block 216. The stop bar 218 is fixedly connected to the inner wall of the oil box 202. The oil inlet 2003, the air inlet pipe 2001, and the pressure balancing port 2004 all penetrate the top outer wall of the rotating block 201.

[0027] Using the above scheme: When the rotating block 201 rotates, the trigger block 216 will contact the stop rod 217. Since the stop rod 217 is in a fixed state and is fixed to the inner ring of the connecting bearing 500, the stop rod 217 will press the trigger block 216 to move to both sides. The moving block 214 moves synchronously, and the inclined groove 215 presses the slide rod 213. The slide rod 213 drives the slider 212 to move vertically synchronously, which can drive the connecting plate 210 to move down. Since the slider 212 and the slide rod 213 move a long distance, the pressure plate 219 may not be able to move down the same distance due to too much oil in the oil box 202. At this time, the return spring 211 will be stretched to ensure that the slider 212 moves down. 12. When the movement distance is inconvenient, the pressure plate 219 moves down as far as possible to apply pressure to the lubricating oil so that it can be discharged from the oil outlet more quickly. After the trigger block 216 disengages from the stop bar 217, the return spring 211 moves the pressure plate 219 up due to its elasticity, and the slider 212 also moves up synchronously. The slide bar 213 pushes the inclined groove 215 in the opposite direction, causing the moving block 214 and the trigger block 216 to move in the opposite direction to reset and return to the initial state. When the protrusion A205 contacts the protrusion B206, the stop bar 217 will definitely contact the trigger block 216, so that the baffle 204 moves up to open the oil outlet and the action of the pressure plate 219 pressing down is synchronized.

[0028] like Figures 2 to 5 As shown, further, when the pressure plate 219 is pressed down, the air pressure in the space above the pressure plate 219 and the oil box 202 will decrease. At this time, air can be drawn into this space through the pressure equalization port 2004 to maintain pressure balance. When the pressure plate 219 moves up, the air pressure in the space below the pressure plate 219 and the oil box 202 will decrease. During its upward movement, the one-way valve 2002 in the air inlet pipe 2001 will open under the action of pressure difference, drawing in external air between the space below the pressure plate 219 and the oil box 202 to maintain pressure balance, so as to prevent the air pressure below the pressure plate 219 from being too low to move upward. When the pressure plate 219 moves down to squeeze the lubricating oil, the cover of the oil filling port 2003 is closed, and the one-way valve 2002 is also closed, so as not to cause lubricating oil leakage. The oil filling port 2003 is fixed on the pressure plate 219 and can move synchronously with the pressure plate 219. Lubricating oil can be added to the oil box 202 through the oil filling port 2003.

[0029] like Figure 6 and Figure 7 As shown, the adjustment mechanism 300 includes a pull rod 301. A square groove 302 is provided on the outer wall of the pull rod 301. A connecting block 304 is hinged to the outer wall of the pull rod 301 through a hinge rod 303. A pulley 305 is fixedly connected to the outer wall of the connecting block 304. A fixing block 306 is fixedly connected to the outer wall of the base 100. A square block 308 is elastically connected to the inner wall of the fixing block 306 through a telescopic spring 307.

[0030] Using the above solution: the pulley 305 can be placed on the electric track of the workbench for movement. The adjustment mechanism 300 can adjust the position of the pulleys 305 on both sides to adapt to electric tracks with different spacing, avoiding the problem of incompatibility and inability to move after changing the electric track; by adjusting and fixing the position of the pull rod 301, the positions of the connecting blocks 304 on both sides and the pulleys 305 can be fixed, and the pull rod 301 can be limited by the square block 308 and the square groove 302. The operation is relatively simple.

[0031] like Figure 6 and Figure 7 As shown, the pull rod 301 is slidably connected to the inner wall of the bottom end of the base 100, and the two ends of the hinge rod 303 are respectively hinged to the outer wall of the pull rod 301 and the connecting block 304. The connecting block 304 is slidably connected to the inner wall of the bottom end of the base 100. One end of the telescopic spring 307 is fixedly connected to the outer wall of the square block 308, and the other end of the telescopic spring 307 is fixedly connected to the inner wall of the fixing block 306. The square block 308 is slidably connected to the inner wall of the fixing block 306, and the square block 308 is engaged with the square groove 302.

[0032] Using the above scheme: When the pull rod 301 moves back and forth, the pull rod 301 will drive the hinge rod 303 and one end connected to it to move synchronously. The other end of the hinge rod 303 will drive the connecting block 304 to move. Since the connecting block 304 can only move laterally, it will drive the connecting block 304 to move to both sides or in the middle at the same time. The pulley 305 moves synchronously with the connecting block 304. Under normal conditions, due to the elasticity of the telescopic spring 307, the square block 308 remains in the popped-out state and is always engaged with a set of square slots 302. The pull rod 301 is used for limiting the position. The outer wall of the square block 308 is equipped with a lever. The operator can pull the lever to move the square block 308 synchronously and disengage it from the square groove 302, thereby adjusting the position of the pull rod 301. After adjustment, when the pulley 305 corresponds to the position of the electric track, the lever can be released. Due to the elasticity of the telescopic spring 307, the square block 308 will spring back to its original position and insert into the corresponding square groove 302, thus fixing the position of the pull rod 301 and the pulley 305.

[0033] Working principle and usage process of this invention: The operator can move the square block 308 by turning the lever on the fixed block 306 and compressing the telescopic spring 307, so that the square block 308 is disengaged from a set of square slots 302. Then, the operator moves the pull rod 301 back and forth, which drives the connecting blocks 304 on both sides and the pulleys 305 to move synchronously to the middle or both sides through the hinge rod 303 until the distance between the pulleys 305 matches the electric track. Then, the operator releases the lever, and the telescopic spring 307 rebounds to push the square block 308 into the corresponding square slot 302, locking the position of the pull rod 301 and the pulleys 305, thus completing the track adaptation.

[0034] Under normal conditions, the four-jaw chuck 400 is in the open state, and the pulley 305 can move along the electric track, driving the base 100 and the entire fixture to move to the pulley to be stretched. The robotic arm can adjust the fixture posture to make the four-jaw chuck 400 and the pulley coaxially aligned. Then the four-jaw chuck 400 is activated, the jaws retract radially, clamp the workpiece from the outer diameter direction of the pulley, and ensure that the pulley is stably positioned before stretching.

[0035] During the movement of the robotic arm, rotation may be required. The drive device drives the rotating block 201 to rotate, and the four-jaw chuck 400 rotates synchronously with the rotating block 201 to achieve circumferential fine adjustment of the pulley. During rotation, the protrusion A205 on the inner wall of the rotating block 201 contacts the protrusion B206 on the outer wall of the connecting bearing 500. The protrusion B206 presses against the protrusion A205, causing the baffle 204 to move upward, compressing the connecting spring 203, and opening the oil outlet of the oil box 202. At the same time, the rotation of the rotating block 201 causes the trigger block 216 to contact the fixed stop bar 217. The stop bar 217 presses against the trigger block 216 to move to both sides. Lateral movement causes the moving block 214 to move horizontally in sync. The inclined groove 215 of the moving block 214 presses against the slide bar 213, causing the slider 212 to move vertically. The return spring 211 pulls the connecting plate 210 and the pressure plate 219 downward, squeezing the lubricating oil in the oil box 202 and accelerating the flow of lubricating oil from the oil outlet. The lubricating oil is injected between the inner and outer rings of the connecting bearing 500 and the contact surface between the rotating block 201 and the base 100, realizing automatic lubrication during rotation, reducing wear during rotation, thereby improving service life and the smoothness of rotation, and also reducing the frequency of maintenance.

[0036] After the drive device stops, the rotating block 201 stops rotating, the protrusion A205 and the protrusion B206 disengage, the connecting spring 203 rebounds and pushes the baffle 204 down, closing the oil outlet of the oil box 202; at the same time, the trigger block 216 disengages from the stop rod 217, the return spring 211 rebounds and drives the pressure plate 219 up, the slider 212 moves in the opposite direction, and the slide rod 213 pushes the inclined groove 215 to reset the moving block 214 and the trigger block 216; when the pressure plate 219 moves up, the air pressure in the space below the oil box 202 decreases, the one-way valve 2002 of the air inlet pipe 2001 opens, and external air is drawn in to balance the pressure, ensuring that the pressure plate 219 is reset smoothly.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulley stretching robot gripper comprising a base (100), characterized in that: The top outer wall of the base (100) is fixedly connected with a connecting bearing (500), and further comprises: A rotating mechanism (200) is arranged on the outer wall of the base (100), A four-jaw chuck (400) is arranged on the rotating mechanism (200); An adjusting mechanism (300) is installed on the bottom outer wall of the base (100); The rotating mechanism (200) comprises a rotating block (201), the inner wall of the rotating block (201) is fixedly connected with an oil box (202), the bottom outer wall of the oil box (202) is elastically connected with a baffle (204) through a connecting spring (203), the bottom outer wall of the baffle (204) is fixedly connected with a protrusion A (205), and the inner wall of the oil box (202) is provided with an extrusion assembly. The extrusion assembly comprises a pressing plate (219), the outer wall of the pressing plate (219) is fixedly connected with a connecting plate (210), the outer wall of the connecting plate (210) is elastically connected with a sliding block (212) through a reset spring (211), the inner wall of the rotating block (201) is slidably connected with a moving block (214), and the outer wall of the moving block (214) is fixedly connected with a trigger block (216).

2. The pulley stretch robotic arm clamp of claim 1, wherein: The outer wall of the connecting bearing (500) is fixedly connected with a protrusion B (206), the rotating block (201) is fixedly connected with the outer ring of the connecting bearing (500), and the rotating block (201) is rotatably connected with the bottom outer wall of the base (100).

3. The pulley stretch machine arm clamp of claim 1, wherein: One end of the connecting spring (203) is fixedly connected with the outer wall of the baffle (204), the other end of the connecting spring (203) is fixedly connected with the inner wall of the oil box (202), the baffle (204) is slidably connected with the inner wall of the oil box (202), and the protrusion A (205) is in contact with the protrusion B (206).

4. The pulley stretch machine arm clamp of claim 1, wherein: The outer wall of the sliding block (212) is fixedly connected with a sliding rod (213), the inner wall of the moving block (214) is provided with an inclined slot (215), the outer wall of the connecting bearing (500) is fixedly connected with a blocking rod (217), the outer wall of the connecting plate (210) is fixedly connected with a blocking strip (218), the outer wall of the pressing plate (219) is fixedly connected with an oil inlet (2003), the top outer wall of the oil box (202) is fixedly connected with a pressure balancing port (2004), the outer wall of the pressing plate (219) is fixedly connected with an air inlet pipe (2001), and the inner wall of the air inlet pipe (2001) is fixedly connected with a one-way valve (2002).

5. The pulley stretch machine arm clamp of claim 4, wherein: The pressing plate (219) is slidably connected with the inner wall of the oil box (202), one end of the reset spring (211) is fixedly connected with the outer wall of the sliding block (212), the other end of the reset spring (211) is fixedly connected with the outer wall of the connecting plate (210), the sliding block (212) and the connecting plate (210) are slidably connected with the inner wall of the rotating block (201), and the sliding rod (213) is in contact with the inner wall of the inclined slot (215).

6. The pulley stretch machine arm clamp of claim 4, wherein: The blocking rod (217) is in contact with the outer wall of the trigger block (216), and the blocking strip (218) is fixedly connected with the inner wall of the oil box (202).

7. The pulley stretch machine arm clamp of claim 4, wherein: The oil inlet (2003), the air inlet pipe (2001) and the pressure balance port (2004) all penetrate the top outer wall of the rotating block (201).

8. The pulley stretch robotic arm clamp of claim 1, wherein: The adjusting mechanism (300) comprises a pull rod (301), a square slot (302) is arranged on the outer wall of the pull rod (301), the outer wall of the pull rod (301) is hingedly connected with a connecting block (304) through a hinge rod (303), the outer wall of the connecting block (304) is fixedly connected with a pulley (305), the outer wall of the base (100) is fixedly connected with a fixed block (306), and the inner wall of the fixed block (306) is elastically connected with a square block (308) through an elastic spring (307).

9. The pulley stretch machine arm clamp of claim 8, wherein: The pull rod (301) is slidably connected with the bottom inner wall of the base (100), the both ends of the hinge rod (303) are respectively hingedly connected with the outer walls of the pull rod (301) and the connecting block (304), and the connecting block (304) is slidably connected with the bottom inner wall of the base (100).

10. The pulley stretch machine arm clamp of claim 8, wherein: One end of the elastic spring (307) is fixedly connected with the outer wall of the square block (308), the other end of the elastic spring (307) is fixedly connected with the inner wall of the fixed block (306), the square block (308) is slidably connected with the inner wall of the fixed block (306), and the square block (308) is clamped with the square slot (302).

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