Tool for measuring axial clearance of output shaft of double-screw gear box

Abstract

The utility model discloses a tool for measuring the axial clearance of the output shaft of a double-screw gear box, which comprises a gear box main body, a shaft a and a shaft b are respectively arranged inside the outer wall of the right end of the gear box main body and are respectively close to the front side and the rear side, and a tool screw b is screwed inside the outer wall of the right end of the shaft a. A tool screw a is screwed in the outer wall of the right end of the shaft b, lever meters are arranged on the upper side of the shaft a and the lower side of the shaft b to detect the transverse moving distance of the shaft a and the shaft b, and the working screw a and the working screw b are pulled to transversely move by installing the lever meters, the tool screw a and the working screw b. The axial clearance of the shaft a and the axial clearance of the shaft b can be detected at the same time, the efficiency is higher, the stability is higher during detection, and the measured data is more accurate due to the fact that the lever meters abutting against the shaft a and the shaft b are matched to monitor and detect the distance of the transverse movement in real time.

Description

Technical Field

[0001] This utility model belongs to the technical field of twin-screw gearboxes, specifically relating to a tooling for measuring the axial clearance of the output shaft of a twin-screw gearbox. Background Technology

[0002] Twin-screw gearboxes are commonly used transmission devices in industrial applications, especially in the plastics, chemical, and other processing industries. Their output shaft is a key component, responsible for transmitting power to the load or downstream equipment, undertaking crucial power transmission and support functions. Proper design, maintenance, and testing are essential for their long-term stable operation. However, the gearboxes of parallel twin-screw extruders have strict requirements for axial clearance during actual operation. In actual production applications, the screws are subjected to significant pressure. If improper assembly occurs, the axial clearance of the output shaft may exceed tolerances, causing interference between the two screws, affecting operation and production, and in severe cases, even causing screw breakage. Existing methods typically involve connecting a measuring rod to the output shaft with bolts, then using a sleeve to strike the measuring rod to move the output shaft, and measuring the movement distance with vernier calipers to calculate the axial clearance. However, this method of measurement generates vibration and instability, affecting the accuracy of the measured data. Utility Model Content

[0003] The purpose of this invention is to provide a tooling for measuring the axial clearance of the output shaft of a twin-screw gearbox, in order to solve the problem mentioned in the background art that the existing method generally involves connecting the measuring rod to the output shaft with bolts, then using a sleeve to strike the measuring rod to drive the output shaft to move, and measuring the moving distance with a vernier caliper to calculate the axial clearance. However, this method of measurement will produce vibration, instability, and affect the accuracy of the measurement data.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tooling for measuring the axial clearance of the output shaft of a twin-screw gearbox, comprising a gearbox body;

[0005] Shaft a and shaft b are respectively provided inside the outer wall of the right end of the gearbox body and near the front and rear sides.

[0006] A tooling screw b is screwed into the inner wall of the right end of shaft a, and a tooling screw a is screwed into the inner wall of the right end of shaft b. A lever gauge is provided on the upper side of shaft a and the lower side of shaft b to detect the lateral movement distance of shaft a and shaft b.

[0007] Preferably, one end of each of the two lever gauges is fixedly connected to a connecting rod, and one end of each of the two connecting rods is provided with a sensing head that fits against the right end face of shaft a and shaft b.

[0008] Preferably, a controller is fixedly connected to the rear outer wall of both lever gauges, and a connecting box is provided on the right outer wall of the gearbox body.

[0009] Preferably, a tooling baffle a is provided on the inner wall of the right end of the connecting box, and a tooling baffle b is provided on the outer wall of the right end of the connecting box.

[0010] Preferably, an adjusting nut b is screwed into one end of both the tooling screw a and the tooling screw b, located on the left side of the tooling baffle a, and an adjusting nut a is screwed into one end of both the tooling screw a and the tooling screw b, located on the right side of the tooling baffle b.

[0011] Preferably, mounting plates are fixedly connected to the leftmost side of the outer walls at both ends of the connecting box, and fixing bolts are provided between the connecting box and the gearbox body to limit the position of the connecting box on the gearbox body.

[0012] Compared with the prior art, this utility model provides a tooling for measuring the axial clearance of the output shaft of a twin-screw gearbox, which has the following advantages:

[0013] By installing a lever gauge, tooling screw a, and working screw b, the axial clearance between shaft a and shaft b is measured. The working screws a and b are pulled laterally, and the lever gauge, which is attached to shaft a and shaft b, monitors the lateral movement in real time. This method allows for simultaneous measurement of the axial clearance of both shafts a and b, resulting in higher efficiency, greater stability, and more accurate data. Furthermore, the measurement is fixed to the twin-screw gearbox connector, eliminating the need for disassembly and simplifying operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a tooling structure for measuring the axial clearance of the output shaft of a twin-screw gearbox according to the present invention.

[0015] Figure 2 This is a partial structural schematic diagram of the top cross-section of the connecting box area of ​​this utility model.

[0016] Figure 3 This is a front view of a partial structural diagram of the connecting box area of ​​this utility model.

[0017] Figure 4 This is a partial structural diagram of the lever gauge area of ​​this utility model.

[0018] In the diagram: 1. Gearbox body; 2. Motor; 3. Air pump; 4. Connecting box; 5. Fixing bolt; 6. Mounting plate; 7. Shaft a; 8. Shaft b; 9. Lever gauge; 10. Tooling screw a; 11. Tooling baffle a; 12. Adjusting nut a; 13. Tooling screw b; 14. Adjusting nut b; 15. Tooling baffle b; 16. Fixing plate; 17. Fastening screw; 18. Controller; 19. Connecting rod; 20. Sensor head. Detailed Implementation

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

[0020] This utility model provides, for example Figure 1-4 The tooling shown includes a gearbox body 1 for measuring the axial clearance of the output shaft of a twin-screw gearbox;

[0021] Shaft a7 and shaft b8 are respectively provided on the inner side of the outer wall of the right end of the gearbox body 1, near the front and rear sides respectively;

[0022] A tooling screw b13 is screwed into the inner wall of the right end of shaft a7, and a tooling screw a10 is screwed into the inner wall of the right end of shaft b8. Lever gauges 9 are installed on the upper side of shaft a7 and the lower side of shaft b8 to detect the lateral movement distance of shafts a7 and b8. When measuring the axial clearance between shafts a7 and b8, first loosen the adjusting nut b14, then tighten the adjusting nut a12 against the tooling b15. Continue tightening the adjusting nut a12 using a torque wrench. Because the adjusting nut a12 is blocked by the tooling b15, the tooling screws a10 and b10... 13. Driven by adjusting nut a12, shafts b8 and a7 move to the right. After moving, the distance moved by shafts a7 and b8 is detected by lever gauge 9. Alternatively, the measurement can be performed by first loosening adjusting nut a12 and then tightening adjusting nut b14 against tooling baffle a11. Using a torque wrench, continue to tighten adjusting nut b14. Driven by adjusting nut b14, tooling screws a10 and b13 move shafts b8 and a7 to the left. The distance moved is detected by lever gauge 9.

[0023] like Figure 2 and Figure 4As shown, each of the two lever gauges 9 has a connecting rod 19 fixedly connected to one end, and each of the two connecting rods 19 has a sensor head 20 attached to the right end face of shaft a7 and shaft b8. The outer wall of the rear end of each of the two lever gauges 9 has a controller 18 fixedly connected to it, and the outer wall of the right end of the gearbox body 1 has a connecting box 4.

[0024] When the lever gauge 9 detects the movement distance of shafts a7 and b8, the sensor head 20 at one end of the connecting rod 19 abuts against the circular outer surface of shafts a7 and b8. When shafts a7 and b8 move, they can be detected by the sensor head 20, and the specific distance moved can be displayed on the lever gauge 9. The detected value can be reset to zero by pressing the button on the back of the controller 18 so that the next detection can be performed.

[0025] like Figure 2 As shown, a tooling baffle a11 is provided on the inner wall of the right end of the connecting box 4, and a tooling baffle b15 is provided on the outer wall of the right end of the connecting box 4. An adjusting nut b14 is screwed into one end of the tooling screw a10 and the tooling screw b13 on the left side of the tooling baffle a11, and an adjusting nut a12 is screwed into one end of the tooling screw a10 and the tooling screw b13 on the side of the tooling baffle b15.

[0026] The tooling baffle a11 blocks and limits the maximum movement distance of the adjusting nut b14, and the tooling baffle b15 blocks and limits the maximum movement distance of the adjusting nut a12. After the adjusting nut a12 and the adjusting nut b14 abut against the tooling baffle a11 and the tooling baffle b15 respectively, the tooling screw a10 and the tooling screw b13 can be pulled to the left or right respectively to move, thereby detecting the lateral movement distance.

[0027] like Figure 1 and Figure 3 As shown, mounting plates 6 are fixedly connected to the leftmost side of the outer walls at both ends of the connecting box 4. Fixing bolts 5 are provided between the connecting box 4 and the gearbox body 1 to limit the position of the connecting box 4 on the gearbox body 1.

[0028] A fixing plate 16 is provided on the front outer wall of the connecting box 4. Each of the four corners of the front outer wall of the fixing plate 16 is provided with a fastening screw 17 that screws backward into the connecting box 4 to limit the position of the fixing plate 16. By unscrewing the fastening screw 17, the fixing plate 16 can be removed. After removing the fixing plate 16, the adjusting nut b14 can be turned by a torque wrench. At the same time, the controller 18 at the rear end of the lever gauge 9 can be contacted to perform the zeroing operation of the lever gauge 9. The connecting box 4 and the mounting plate 6 adopt an integrated connection design. The connecting box 4 abuts against the gearbox body 1 through the mounting plate 6, and the connecting box 4 and the mounting plate 6 are fixedly connected by fixing bolts 5.

[0029] like Figure 1As shown, a motor 2 is installed on the front outer wall of the gearbox body 1, and an air pump 3 is installed on the right side of the motor 2.

[0030] Motor 2 can be controlled by frequency converter or relay to achieve speed regulation and start / stop control to adapt to different working needs. Air pump 3 is usually used to provide compressed air to drive pneumatic equipment or perform suction work.

[0031] The implementation principle of this embodiment is as follows: When measuring the axial clearance between shaft a7 and shaft b8, first loosen the adjusting nut b14, tighten the adjusting nut a12 against the tooling b15, and continue to tighten the adjusting nut a12 using a torque wrench. Since the adjusting nut a12 is blocked by the tooling b15, the tooling screws a10 and b13, driven by the adjusting nut a12, drive shaft b8 and shaft a7 to move to the right. After the movement, the distance moved by shaft a7 and shaft b8 will be detected by the lever gauge 9. Alternatively, another method can be used for measurement: first loosen the adjusting nut a12, tighten the adjusting nut b14 against the tooling b11, and continue to tighten the adjusting nut b14 using a torque wrench. Driven by the adjusting nut b14, the tooling screws a10 and b13 will drive shaft b8 and shaft a7 to move to the left, and the distance moved will be detected by the lever gauge 9.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for measuring the axial clearance of the output shaft of a double screw gearbox, comprising a gearbox body (1); An axle a (7) and an axle b (8) are respectively arranged on the inner wall of the right end of the gearbox body (1); characterized in that A tool screw b (13) is screwed on the inner wall of the right end of the axle a (7), and a tool screw a (10) is screwed on the inner wall of the right end of the axle b (8); a lever table (9) is arranged on the upper side of the axle a (7) and the lower side of the axle b (8) to detect the transverse displacement of the axle a (7) and the axle b (8).

2. A tool for measuring axial clearance of an output shaft of a twin screw gearbox according to claim 1, characterized in that: One end of each of the two lever tables (9) is fixedly connected with a connecting rod (19), and one end of each of the two connecting rods (19) is provided with a sensing head (20) abutting on the right end surface of the axle a (7) and the axle b (8).

3. A tool for measuring axial clearance of an output shaft of a double screw gearbox according to claim 1, characterized in that: The rear end of each of the two lever tables (9) is fixedly connected with a controller (18), and the right end of the gearbox body (1) is provided with a connecting box (4).

4. A tool for measuring axial clearance of an output shaft of a twin screw gearbox according to claim 3, characterized in that: A tool baffle a (11) is arranged on the right end of the connecting box (4), and a tool baffle b (15) is arranged on the right end of the connecting box (4).

5. A tool for measuring axial clearance of an output shaft of a double screw gearbox according to claim 1, characterized in that: An adjusting nut b (14) is screwed on one end of the tool screw a (10) and the tool screw b (13) on the left side of the tool baffle a (11), and an adjusting nut a (12) is screwed on one end of the tool screw a (10) and the tool screw b (13) on the right side of the tool baffle b (15).

6. A tool for measuring axial clearance of an output shaft of a double screw gearbox according to claim 3, characterized in that: A fixing bolt (5) is arranged between the connecting box (4) and the gearbox body (1) to limit the position of the connecting box (4) on the gearbox body (1).

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