Device for detecting torque of shaft head of motor shaft

Abstract

The utility model relates to the technical field of motor shaft head torque detection, in particular to a motor shaft head torque detection device which comprises a clamp overall support, a fixed jaw, a sliding jaw, an air cylinder and a lever structure. The fixed jaw is fixedly installed on the front portion of the clamp overall support, and the sliding jaw is arranged opposite to the fixed jaw and connected with the front portion of the clamp overall support in a sliding mode. The air cylinder is fixed in the clamp overall support; the lever structure is pushed to move through the air cylinder, so that the sliding jaw is driven to be close to or away from the fixed jaw, and the work of clamping or loosening the motor shaft is completed through cooperation of the sliding jaw and the fixed jaw. Through cooperation of the fixed jaw, the sliding jaw, the lead screw structure and the like, a motor shaft can be effectively clamped, and firm clamping is ensured. Clamping devices such as an air cylinder and a lever structure are adopted, an original manual wrench clamping mode is replaced, the clamping time is shortened, and the clamping efficiency is improved; and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor shaft head torque detection, and specifically relates to a device for detecting the torque of a motor shaft head. Background Technique

[0002] In the production and use process of a motor shaft, the detection of the torque of the motor shaft head is a very important link. In the prior art, to detect the torque of the motor shaft head, the motor shaft is usually fixed vertically. The original clamping method is to first fix the three-jaw chuck on the working platform, then place the motor shaft vertically at the center of the three-jaw chuck, and use a manual wrench to tighten the three jaws of the chuck to clamp the motor shaft, and then use a torque wrench to detect the torque. However, this original clamping mode has the following technical problems:

[0003] First of all, the process of clamping the motor shaft with a manual wrench is relatively cumbersome and time-consuming, resulting in low detection efficiency.

[0004] Moreover, it requires workers to frequently operate the manual wrench, increasing the labor intensity of the workers.

[0005] The motor shaft is prone to rotation and the clamping is not firm: when detecting the torque, the motor shaft may rotate due to the insecure clamping, affecting the accuracy of the detection result.

[0006] Therefore, developing a device for detecting the torque of a motor shaft head with high clamping efficiency and firm clamping has become an urgent problem to be solved by people. Content of the Utility Model

[0007] The purpose of the utility model is to provide a device for detecting the torque of a motor shaft head, aiming to improve the clamping efficiency, reduce the labor intensity of workers, and ensure the firm clamping of the motor shaft, so as to solve the technical problems in the background technique.

[0008] To achieve the above purpose, the utility model provides the following technical solution: a device for detecting the torque of a motor shaft head, including a fixture overall bracket, a fixed jaw, a sliding jaw, a cylinder and a lever structure;

[0009] The fixture overall bracket serves as the main bracket of the torque detection device;

[0010] The fixed jaw is fixedly installed at the front part of the fixture overall bracket, and the sliding jaw is arranged opposite to the fixed jaw and is slidably connected to the front part of the fixture overall bracket;

[0011] The cylinder is fixed inside the fixture overall bracket; the cylinder serves as the power source for the clamping action of the sliding jaw;

[0012] The middle part of the lever structure is hinged to the right side surface of the overall fixture bracket. One end of the lever structure is hinged to the telescopic end of the cylinder, and the other end of the lever structure is hinged to the sliding jaw. By pushing the lever structure with the cylinder, the sliding jaw is driven to approach or move away from the fixed jaw, and the work of clamping or loosening the motor shaft is completed through the cooperation of the sliding jaw and the fixed jaw.

[0013] Further, the overall fixture bracket includes a rear fixture fixing plate, a right fixture plate, a left fixture plate, and a front fixture fixing plate.

[0014] The rear fixture fixing plate is arranged at the rear of the overall fixture bracket, the front fixture fixing plate is arranged at the front of the overall fixture bracket, and the left and right ends of the rear fixture fixing plate and the front fixture fixing plate are respectively connected by the left fixture plate and the right fixture plate.

[0015] The fixed jaw and the sliding jaw are arranged on the front fixture fixing plate. The fixed jaw is fixed on the left side of the front fixture fixing plate, and the sliding jaw is arranged on the right side of the fixed jaw and is slidably connected to the front fixture fixing plate.

[0016] The fixed end of the cylinder is fixedly installed on the left fixture plate.

[0017] Further, the lever structure includes a piston rod connecting plate, a first cylindrical pin, a second cylindrical pin, a pressing lever, and a third cylindrical pin.

[0018] One end of the piston rod connecting plate is fixedly connected to the telescopic end of the cylinder, and the other end thereof is hinged to the input end of the pressing lever with the third cylindrical pin as the hinge axis.

[0019] The middle part of the pressing lever is hinged to the right fixture plate with the first cylindrical pin as the hinge axis. The first cylindrical pin also serves as the fulcrum of the pressing lever. The output end of the pressing lever is hinged to the sliding jaw through the second cylindrical pin.

[0020] Further, a lead screw structure is also included. The lead screw structure is arranged between the sliding jaw and the lever structure. The lead screw structure includes: a jaw nut, a jaw lead screw, and a slider.

[0021] The jaw nut is fixedly connected to the back of the sliding jaw. A threaded hole is provided in the middle of the jaw nut. Chutes are provided on the outer walls of the upper and lower ends of the jaw nut and the slider. Corresponding to this, a hollow structure is provided in the middle of the front fixture fixing plate along its length direction, and slide rails are provided on both the upper and lower sides of the hollow structure. The jaw nut and the slider are arranged between the slide rails on the upper and lower sides of the right fixture plate, and the chutes at the upper and lower ends of the jaw nut and the slider are slidably matched with the slide rails.

[0022] The front end of the jaw lead screw is threadedly connected to the jaw nut. The rear end of the jaw lead screw is rotatably connected to the slider.

[0023] One end of the slider close to the lever structure is hinged to the lever structure by a first cylindrical pin.

[0024] Furthermore, V-shaped grooves are provided on both the sliding jaw and the fixed jaw.

[0025] Furthermore, it further includes a limit adjustment bolt and a support frame; the support frame is installed at a position near the fixed jaw at the lower part of the overall fixture bracket; a vertical threaded hole is provided on the support frame;

[0026] The limit adjustment bolt has an inverted T-shaped structure; a thread is provided in the vertical direction; the limit adjustment bolt is threadedly connected to the support frame through the threaded hole; the height is adjusted by rotating the limit adjustment bolt.

[0027] Furthermore, it further includes a pneumatic control valve, and the pneumatic control valve is fixed on the left plate of the fixture; the pneumatic control valve is connected to the air cylinder.

[0028] Beneficial effects

[0029] The utility model adopts an automatic clamping device such as an air cylinder and a lever structure, replacing the original manual wrench clamping method, greatly shortening the clamping time, improving the clamping efficiency; reducing the physical labor of workers and lowering the labor intensity of workers;

[0030] The structure of the utility model is simple and easy to operate; through the cooperation of the fixed jaw, the sliding jaw and the lead screw structure, etc., the motor shaft can be effectively clamped, avoiding the rotation of the motor shaft during the detection process and ensuring firm clamping. Brief description of the drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of the device for detecting the torque of the motor shaft head disclosed by the present utility model;

[0033] Figure 2 It is a right side view of the device for detecting the torque of the motor shaft head disclosed by the present utility model;

[0034] Figure 3 It is a top view of the device for detecting the torque of the motor shaft head disclosed by the present utility model.

[0035] In the figure:

[0036] 1. Rear fixing plate of fixture; 2. Right plate of fixture; 3. Left plate of fixture; 4. Fixed jaw; 5. Front fixing plate of fixture; 6. Sliding jaw; 7. Jaw nut; 8. Jaw lead screw; 9. Cylinder; 10. Connecting plate of piston rod; 11. First cylindrical pin; 12. Second cylindrical pin; 13. Pressing lever; 14. Limit adjustment bolt; 15. Pneumatic control valve; 16. Motor shaft; 17. Slide block; 18. Third cylindrical pin; 19. Support frame. Detailed implementation mode

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] To achieve the above object, the present invention provides the following technical solutions, as Figures 1-3 shown, a device for detecting the torque of the shaft head of a motor shaft includes a general fixture bracket, a fixed jaw 4, a sliding jaw 6, a cylinder 9 and a lever structure;

[0039] The general fixture bracket, as the main bracket of the torque detection device, can be fixed on the workbench surface;

[0040] The fixed jaw 4 is fixedly installed at the front of the general fixture bracket, and the sliding jaw 6 is arranged opposite to the fixed jaw 4 and is slidably connected to the front of the general fixture bracket;

[0041] The cylinder 9 is fixed inside the general fixture bracket; the cylinder 9 serves as the power source for the clamping action of the sliding jaw 6;

[0042] The middle part of the lever structure is hinged to the right side surface of the general fixture bracket, one end of the lever structure is hinged to the telescopic end of the cylinder 9, and the other end of the lever structure is hinged to the sliding jaw 6; by pushing the lever structure to move through the cylinder 9, the sliding jaw 6 is driven to approach or move away from the fixed jaw 4, and the clamping or loosening of the motor shaft 16 is completed through the cooperation of the sliding jaw 6 and the fixed jaw 4.

[0043] Furthermore, the general fixture bracket includes a rear fixing plate 1 of the fixture, a right plate 2 of the fixture, a left plate 3 of the fixture and a front fixing plate 5 of the fixture;

[0044] The rear fixing plate 1 of the fixture is arranged at the rear of the general fixture bracket, the front fixing plate 5 of the fixture is arranged at the front of the general fixture bracket, and the left and right ends of the rear fixing plate 1 of the fixture and the front fixing plate 5 of the fixture are respectively connected by the left plate 3 of the fixture and the right plate 2 of the fixture;

[0045] The fixed jaw 4 and the sliding jaw 6 are arranged on the front fixing plate 5 of the fixture; the fixed jaw 4 is fixed on the left side of the front fixing plate 5 of the fixture, and the sliding jaw 6 is arranged on the right side of the fixed jaw 4 and is slidably connected to the front fixing plate 5 of the fixture;

[0046] The fixed end of the air cylinder 9 is fixedly installed on the left plate 3 of the fixture.

[0047] Furthermore, the lever structure includes a piston rod connecting plate 10, a first cylindrical pin 11, a second cylindrical pin 12, a pressing lever 13 and a third cylindrical pin 18;

[0048] The piston rod connecting plate 10 is in a long strip shape, and connection holes are respectively arranged at both ends for connecting with the telescopic end of the air cylinder 9 and the input end of the pressing lever 13. One end of the piston rod connecting plate 10 is fixedly connected to the telescopic end of the air cylinder 9, and the other end thereof is hinged to the input end of the pressing lever 13 with the third cylindrical pin 18 as the hinge axis; the power of the air cylinder 9 is transmitted to the pressing lever 13;

[0049] The middle part of the pressing lever 13 is hinged to the right plate 2 of the fixture with the first cylindrical pin 11 as the hinge axis; the first cylindrical pin 11 also serves as the fulcrum of the pressing lever 13; it should be noted that the position of the first cylindrical pin 11 is close to the output end of the pressing lever 13, so that a labor-saving lever can be formed at the output end on the side of the air cylinder 9, amplifying the pressure output by the air cylinder 9, and finally making the sliding jaw 6 press the motor shaft 16 more firmly on the fixed jaw 4;

[0050] The output end of the pressing lever 13 is hinged to the sliding jaw 6 through the second cylindrical pin 12; the second cylindrical pin 12 is used to connect the output end of the pressing lever 13 and the sliding jaw 6, so that the pressing lever 13 can drive the sliding jaw 6 to move.

[0051] During use, the telescopic movement of the piston rod of the air cylinder 9 pushes the piston rod connecting plate 10 to move, the piston rod connecting plate 10 drives the input end of the lever structure to move, and the output end of the lever structure drives the sliding jaw 6 to approach or move away from the fixed jaw 4, and the clamping or loosening of the motor shaft 16 is completed through the cooperation of the sliding jaw 6 and the fixed jaw 4.

[0052] Furthermore, a lead screw structure is also included. The lead screw structure is arranged between the sliding jaw 6 and the lever structure. The lead screw structure is used to transmit power between the sliding jaw 6 and the output end of the lever structure; the lead screw structure itself can also adjust the position of the sliding jaw 6;

[0053] The lead screw structure includes: a jaw nut 7, a jaw lead screw 8 and a slider 17;

[0054] The jaw nut 7 is fixedly connected to the back of the sliding jaw 6; a threaded hole is provided in the middle of the jaw nut 7, and sliding grooves are provided on the outer walls of the upper and lower ends of the jaw nut 7 and the slider 17. Correspondingly, the middle part of the front fixture fixing plate 5 is provided with a hollow structure opened along its length direction. Slide rails are arranged on both the upper and lower sides of the hollow structure. The jaw nut 7 and the slider 17 are arranged between the slide rails on the upper and lower sides of the right fixture plate 2, and slide along the slide rails through the sliding grooves on the outer walls of the upper and lower ends of the jaw nut 7 and the slider 17;

[0055] The front end of the jaw lead screw 8 is threadedly connected to the jaw nut 7; the rear end of the jaw lead screw 8 is rotatably connected to the slider 17; it should be noted that the rear end of the jaw lead screw 8 is also clamped on the slider 17 to ensure that the jaw lead screw 8 and the slider 17 move synchronously under the drive of the lever structure;

[0056] One end of the slider 17 close to the lever structure is hinged to the lever structure through the first cylindrical pin 11;

[0057] During use, the lead screw structure can move along the slide rail on the front fixture fixing plate 5 under the drive of the lever structure, so as to drive the sliding jaw 6 to approach or move away from the fixed jaw 4;

[0058] The lead screw structure itself can also drive the jaw nut 7 through the rotation of the jaw lead screw 8 by screw drive, so as to drive the sliding jaw 6 to approach or move away from the fixed jaw 4.

[0059] Furthermore, V-shaped grooves are provided on both the sliding jaw 6 and the fixed jaw 4. The V-shaped grooves are provided to clamp the motor shaft 16 more firmly. In actual use, laying a rubber pad in the V-shaped groove can better increase the friction force of clamping the motor shaft 16 and can also protect the surface of the motor shaft 16 to a certain extent.

[0060] Furthermore, it also includes a limit adjustment bolt 14 and a support frame 19; the support frame 19 is installed at a position near the fixed jaw 4 at the lower part of the overall fixture bracket; the support frame 19 is L-shaped, and a threaded hole in the vertical direction is provided at the lower end for installing the limit adjustment bolt 14;

[0061] The limit adjustment bolt 14 is an inverted T-shaped structure; a thread is provided in its vertical direction; the limit adjustment bolt 14 is threadedly connected to the support frame 19 through the threaded hole; by rotating the limit adjustment bolt 14, its height can be adjusted. So that the height required for the motor shaft 16 to be exposed for detection is achieved; ensuring the accurate position of the motor shaft 16 is convenient for torque detection.

[0062] Further, it further includes a pneumatic control valve 15, on which there are control buttons and interfaces; the pneumatic control valve 15 is connected to the cylinder 9 and fixed on the left fixture plate 3; the pneumatic control valve 15 can accurately control the intake and exhaust of the cylinder 9 to realize the loosening and clamping operations of the sliding jaw 6.

[0063] The working principle and process are as follows:

[0064] First, fix the detection device on the workbench surface and push the pneumatic control valve 15 to make the sliding jaw 6 in the loosened state.

[0065] Then, place the lower end of the motor shaft 16 to be detected on the upper end of the limit adjustment bolt 14. By adjusting the height of the limit adjustment bolt 14, drive the motor shaft 16 to rise and fall to make the motor shaft 16 expose an appropriate detection height, and lean one side of the motor shaft 16 against the V-shaped groove of the fixed jaw 4.

[0066] Finally, rotate the jaw lead screw 8, drive the sliding jaw 6 to move forward through the jaw nut 7 to make a gap of 2-3 mm between the sliding jaw 6 and the motor shaft 16. At this time, push the pneumatic control valve 15 to make the cylinder 9 drive the input end of the lever structure to move, and the output end of the lever structure pushes the lead screw structure, thereby driving the sliding jaw 6 to move towards the fixed jaw 4. After clamping the motor shaft 16, the torque of the motor shaft 16 head can be detected by a torque wrench.

[0067] After the detection is completed, control the cylinder 9 to exhaust through the pneumatic control valve 15, and the lever structure drives the sliding jaw 6 to move away from the fixed jaw 4 to loosen the motor shaft 16.

[0068] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A device for detecting torque of a motor shaft head, characterized in that: It comprises a clamp overall support, a fixed jaw (4), a sliding jaw (6), a cylinder (9) and a lever structure; The clamp overall bracket serves as the main bracket of the torque detection device; The fixed jaw (4) is fixedly mounted on the front part of the overall bracket of the clamp, and the sliding jaw (6) is arranged opposite to the fixed jaw (4) and is slidably connected to the front part of the overall bracket of the clamp; The cylinder (9) is fixed inside the overall bracket of the clamp; the cylinder (9) serves as a power source for the clamping action of the sliding jaw (6); The middle part of the lever structure is hinged to the right side surface of the clamp overall bracket, one end of the lever structure is hinged to the telescopic end of the cylinder (9), and the other end of the lever structure is hinged to the sliding jaw (6); the cylinder (9) pushes the lever structure to move, thereby driving the sliding jaw (6) to approach or move away from the fixed jaw (4), and the sliding jaw (6) cooperates with the fixed jaw (4) to complete the work of clamping or loosening the motor shaft (16).

2. The motor shaft head torque detection device according to claim 1, characterized in that: The clamp overall bracket comprises a clamp rear fixing plate (1), a clamp right plate (2), a clamp left plate (3) and a clamp front fixing plate (5); The clamp rear fixing plate (1) is arranged at the rear part of the clamp overall bracket, and the clamp front fixing plate (5) is arranged at the front part of the clamp overall bracket. The left and right ends of the clamp rear fixing plate (1) and the clamp front fixing plate (5) are connected respectively through the clamp left plate (3) and the clamp right plate (2); The fixed jaw (4) and the sliding jaw (6) are arranged on the front fixing plate (5) of the clamp; the fixed jaw (4) is fixed on the left side of the front fixing plate (5) of the clamp, and the sliding jaw (6) is arranged on the right side of the fixed jaw (4) and is slidably connected to the front fixing plate (5) of the clamp; The fixed end of the cylinder (9) is fixedly mounted on the left plate (3) of the fixture.

3. The motor shaft head torque detection device according to claim 2, characterized in that: The lever structure comprises a piston rod connecting plate (10), a first cylindrical pin (11), a second cylindrical pin (12), a pressure lever (13) and a third cylindrical pin (18); One end of the piston rod connecting plate (10) is fixedly connected to the telescopic end of the cylinder (9), and the other end is hinged to the input end of the pressure lever (13) via a third cylindrical pin (18) as a hinge axis; The middle part of the pressure lever (13) is hinged to the right plate (2) of the clamp with the first cylindrical pin (11) as the hinge axis; the first cylindrical pin (11) also serves as the fulcrum of the pressure lever (13); the output end of the pressure lever (13) is hinged to the sliding jaw (6) through the second cylindrical pin (12).

4. The motor shaft head torque detection device according to claim 3, characterized in that: It also includes a screw structure, which is arranged between the sliding jaw (6) and the lever structure; the screw structure includes: a jaw nut (7), a jaw screw (8) and a slider (17); The jaw nut (7) is fixedly connected to the back of the sliding jaw (6); a threaded hole is provided in the middle of the jaw nut (7); sliding grooves are provided on the outer walls of the upper and lower ends of the jaw nut (7) and the sliding block (17); the middle of the corresponding front fixing plate (5) of the clamp has a hollow structure provided along its length direction; the upper and lower sides of the hollow structure are provided with sliding rails; the jaw nut (7) and the sliding block (17) are provided between the sliding rails on the upper and lower sides of the right plate (2) of the clamp; the sliding grooves on the upper and lower ends of the jaw nut (7) and the sliding block (17) cooperate with the sliding rails to slide; The front end of the jaw lead screw (8) is threadedly connected to the jaw nut (7); the rear end of the jaw lead screw (8) is rotatably connected to the slider (17); One end of the sliding block (17) close to the lever structure is hinged to the lever structure via a first cylindrical pin (11).

5. The motor shaft head torque detection device according to claim 1, characterized in that: The sliding jaw (6) and the fixed jaw (4) are both provided with V-shaped grooves.

6. The motor shaft head torque detection device according to claim 1, characterized in that: It also includes a limit adjustment bolt (14) and a support frame (19); The support frame (19) is installed at a position close to the fixed jaw (4) at the lower part of the overall bracket of the clamp; a vertical threaded hole is provided on the support frame (19); The limit adjustment bolt (14) is an inverted T-shaped structure; a thread is arranged in the vertical direction; the limit adjustment bolt (14) is threadedly connected to the support frame (19) through a threaded hole; and the height of the limit adjustment bolt (14) can be adjusted by rotating it.

7. The motor shaft head torque detection device according to claim 1, characterized in that: It also includes a pneumatic control valve (15), which is fixed on the left plate (3) of the fixture; the pneumatic control valve (15) is connected to the cylinder (9).

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