A synchronous adjusting device and adjusting method of a double-screw extruder gear box

Abstract

The application relates to a synchronous adjusting device and adjusting method of a double-screw extruder gear box, the adjusting device comprising two first spline sleeves and two second spline sleeves, one first spline sleeve and one second spline sleeve being used for sleeving on the splines of one set of split shafts and converging shafts, and the other first spline sleeve and the other second spline sleeve being used for sleeving on the splines of the other set of split shafts and converging shafts; further comprising a fastener used for fastening the first spline sleeve and the second spline sleeve together in the axial direction, and further comprising a phase adjusting tool, the adjusting device and the adjusting method being used to effectively realize synchronous and same-phase adjustment of the double-output shafts of the double-screw extruder gear box, the adjusting device being simple in structure and simple in adjusting process, and the cumbersome process of ensuring the centering of the teeth and the splines by means of three-coordinate measurement precise positioning and rough positioning by scribing is not needed, so that the production manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gear transmission, in particular to a synchronous adjusting device and adjusting method of a double-screw extruder gear box. BACKGROUND

[0002] The double-screw extruder gear box mainly realizes two functions of speed reduction and power distribution. It not only reduces the motor speed to the required speed of the extruder screw, but also evenly distributes the power of the input shaft to the two output shafts. The existing double-screw extruder gear box structure is disclosed in the Chinese patent document CN217927046U. In order to ensure that the two output shafts can realize synchronous output, the existing method is to adjust the tooth part of the split gear and the spline pair of the split shaft, and the tooth part of the combined gear and the spline pair of the combined shaft, and then connect the end parts of the split shaft and the combined shaft through a spline sleeve. This method requires line marking rough positioning and three-coordinate measurement precise positioning to ensure the alignment of the teeth and splines. The process is relatively complicated and the cost is relatively high. SUMMARY

[0003] The purpose of the present application is to solve the problem of complicated synchronous adjusting process and high cost of the double-screw extruder gear box in the prior art, and to provide a synchronous adjusting device and adjusting method of a double-screw extruder gear box.

[0004] According to the first aspect of the present application, the present application provides a synchronous adjusting device of a double-screw extruder gear box, and the technical solution is as follows:

[0005] A synchronous adjusting device of a double-screw extruder gear box, comprising two first spline sleeves and two second spline sleeves, one first spline sleeve and one second spline sleeve are used for sleeving on the splines of a group of split shafts and combined shafts, and the other first spline sleeve and the other second spline sleeve are used for sleeving on the splines of another group of split shafts and combined shafts; further comprising a fastener, the fastener is used for fastening the first spline sleeve and the second spline sleeve together along the axial direction.

[0006] Further, first and second waist holes are respectively formed on the first and second spline sleeves along the axial direction, the length direction of the first and second waist holes is along the circumferential tangent direction, the fastener comprises a bolt and a nut, the screw rod of the bolt can cooperate with the nut after passing through the first and second waist holes, the first and second spline sleeves have a certain displacement along the circumferential direction, the waist holes are formed on the two to compensate for the circumferential displacement amount, and the screw rod of the bolt can pass through the waist holes of the two and cooperate with the nut to press the two together.

[0007] Further, the first waist hole and the second waist hole are equal in number and at least two; the first waist hole and the second waist hole are arranged uniformly along the circumferential direction on the first spline sleeve and the second spline sleeve respectively, and a plurality of first waist holes and second waist holes are matched with the same number of fasteners to ensure that the fastening effect of the first spline sleeve and the second spline sleeve along the axial direction is better.

[0008] Further, the first spline sleeve and the second spline sleeve are respectively formed with a first flange plate and a second flange plate, and the first waist hole and the second waist hole are respectively arranged on the first flange plate and the second flange plate, and the flange plate formed on the spline sleeve facilitates the machining of the waist hole.

[0009] Further, it further comprises a phase adjusting tool, the phase adjusting tool is provided with a first spline hole and a second spline hole which are parallel to each other and the same size, and the line connecting the tooth groove midpoints of the two closest teeth is collinear with the line connecting the hole centers of the two, and in the synchronous adjustment process, the phase adjusting tool is used to be sleeved on the splines of the output ends of the first output shaft and the second output shaft of the gearbox through the first spline hole and the second spline hole, thereby ensuring the output in-phase requirement.

[0010] According to the second aspect of the present application, the present application provides an adjusting method using the above adjusting device, and the technical scheme is as follows:

[0011] a: rotate each transmission shaft so that the working tooth surfaces between the transmission teeth are in close contact;

[0012] b: sleeve one first spline sleeve and one second spline sleeve on the splines of a group of split shafts and flow combining shafts respectively;

[0013] c: fasten the first spline sleeve and the second spline sleeve together through the fasteners, and mark the alignment marks on them;

[0014] d: disassemble the first spline sleeve and the second spline sleeve, align them according to the alignment marks, and then drill axial positioning pin holes on the end faces of the two;

[0015] e: sleeve the first spline sleeve and the second spline sleeve on the splines of the group of split shafts and flow combining shafts respectively, and then insert a pin into the positioning pin hole;

[0016] f: sleeve another first spline sleeve and another second spline sleeve on the splines of another group of split shafts and flow combining shafts respectively, and then repeat steps c-e.

[0017] The application adopting the foregoing technical scheme, after step a, synchronous transmission is achieved at the connection positions of the two sets of split shafts and the combination shaft in the gear box, the splines at the ends of the split shafts and the combination shaft are circumferentially misaligned, the first spline sleeve and the second spline sleeve are designed, steps b-f are performed, and synchronous transmission between the split shafts and the combination shaft can also be achieved, compared with the prior art, the synchronous adjustment process of the double-output shaft of the double-screw extruder gear box is relatively complicated and the cost is relatively high, the synchronous adjustment of the double-output shaft of the double-screw extruder gear box can be effectively achieved, the adjustment device is simple in structure and simple in adjustment process, and the cumbersome process of ensuring the alignment of the teeth and the spline by means of line marking, rough positioning and precise positioning by means of three-coordinate measurement is not needed, and the production manufacturing cost is reduced.

[0018] Further, in step b, the first spline sleeve and the second spline sleeve are respectively sleeved on the splines of the second split shaft and the second combination shaft located at the lower part of the gear box; in step f, the first spline sleeve and the second spline sleeve are respectively sleeved on the splines of the first split shaft and the first combination shaft located at the upper part of the gear box, the spline sleeves are installed on the split shafts and the combination shafts at the lower part, at this time, the split shafts and the combination shafts at the upper part can be detached to leave installation space, and installation is more convenient.

[0019] Further, the positioning pin holes in step d are at least two and are uniformly arranged along the circumference, so as to ensure the accurate circumferential positioning between the first spline sleeve and the second spline sleeve.

[0020] Further, between step a and step b, step a1 is further included, that is, the phase adjustment tool is sleeved on the splines of the output ends of the first output shaft and the second output shaft through the first spline hole and the second spline hole on the phase adjustment tool, so as to ensure the output of the first output shaft and the second output shaft in the same phase.

[0021] Compared with the prior art, the application has the beneficial effects that: the first spline sleeve and the second spline sleeve are designed, the synchronous adjustment of the double-output shaft is effectively achieved by combining the adjustment process, the phase adjustment tool is designed, the same-phase adjustment of the double-output shaft is effectively achieved, the adjustment device is simple in structure and simple in adjustment process, the cumbersome process of ensuring the alignment of the teeth and the spline by means of line marking, rough positioning and precise positioning by means of three-coordinate measurement is not needed, and the production manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the internal structure of the gear box of the double-screw extruder.

[0023] Figure 2 It is a schematic diagram of the structure of the first spline sleeve.

[0024] Figure 3 It is a schematic diagram of the structure of the second spline sleeve.

[0025] Figure 4A schematic view of the phase adjustment tool structure is shown.

[0026] Marked in the figure: 1-first waist hole, 2-first pin hole, 3-second waist hole, 4-second pin hole, 5-screw hole, 6-convex ring, 7-concave ring, 8-input gear shaft, 9-secondary gear shaft, 10-large gear, 11-first split gear, 12-first split shaft, 13-first spline sleeve, 14-first combined shaft, 15-first combined gear, 16-first output shaft, 17-second output shaft, 18-second combined gear, 19-second combined shaft, 20-second spline sleeve, 21-second split shaft, 22-second split gear, 23-phase adjustment tool, 24-first spline hole, 25-second spline hole. DETAILED DESCRIPTION

[0027] The present application will be described in detail below with reference to the drawings.

[0028] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0029] The present embodiment provides a synchronous adjustment device for a double-screw extruder gearbox, as shown in Figures 1-4 which includes two first spline sleeves 13 and two second spline sleeves 20, one first spline sleeve 13 and one second spline sleeve 20 are respectively used for sleeving on the splines of a set of split shafts and combined shafts, and the other first spline sleeve 13 and the other second spline sleeve 20 are respectively used for sleeving on the splines of another set of split shafts and combined shafts; and further includes a fastener, the fastener is used for fastening the first spline sleeve 13 and the second spline sleeve 20 together along the axial direction;

[0030] The first spline sleeve 13 and the second spline sleeve 20 are respectively provided with a first waist hole 1 and a second waist hole 3 along the axial direction, the length direction of the first waist hole 1 and the second waist hole 3 is along the circumferential tangent direction, the fastener includes a bolt and a nut, the screw rod of the bolt can be matched with the nut after passing through the first waist hole 1 and the second waist hole 3;

[0031] In addition, the way in which the fastener fastens the first spline sleeve 13 and the second spline sleeve 20 together along the axial direction can also be that the first spline sleeve 13 is provided with a screw hole along the axial direction, the second spline sleeve 20 is provided with a third waist hole along the axial direction, the length direction of the third waist hole is along the circumferential tangent direction, and the fastener includes a screw, the screw rod of the screw can be matched with the screw hole after passing through the third waist hole;

[0032] In order to make the first spline sleeve 13 and the second spline sleeve 20 be axially aligned when being fastened together, a convex ring 6 coaxial with the first spline sleeve 13 is arranged on the end face of the first spline sleeve 13 close to the second spline sleeve 20, and a concave ring 7 coaxial with the second spline sleeve 20 is arranged on the end face of the second spline sleeve 20 close to the first spline sleeve 13, the convex ring 6 being adapted to the concave ring 7;

[0033] The number of the first waist holes 1 and the second waist holes 3 is equal and at least two; the first waist holes 1 and the second waist holes 3 are respectively arranged on the first spline sleeve 13 and the second spline sleeve 20 in a uniform manner along the circumferential direction; specifically, the number of the first waist holes 1 and the second waist holes 3 is four;

[0034] The first spline sleeve 13 and the second spline sleeve 20 are respectively formed with a first flange plate and a second flange plate, and the first waist holes 1 and the second waist holes 3 are respectively arranged on the first flange plate and the second flange plate;

[0035] Further comprising a phase adjusting tool 23, the phase adjusting tool 23 is provided with a first spline hole 24 and a second spline hole 25 which are parallel to each other and have the same size, and the line connecting the tooth groove midpoints of the two closest teeth is collinear with the line connecting the hole centers of the two.

[0036] The embodiment also provides an adjusting method using the above-mentioned synchronous adjusting device, and the steps are as follows:

[0037] a: rotate each transmission shaft so that the working tooth surfaces between the transmission teeth are in abutment;

[0038] Specifically, the rotating directions of the transmission shafts are determined from left to right according to the formula: clockwise for the input gear shaft 8, clockwise for the secondary gear shaft 9, counterclockwise for the first split shaft 12, clockwise for the first output shaft 16, and clockwise for the second output shaft 17. Figure 1 a1: the phase adjusting tool 23 is sleeved on the splines at the output ends of the first output shaft 16 and the second output shaft 17 through the first spline hole 24 and the second spline hole 25 thereon;

[0039] Specifically, the second output shaft 17 in step a is rotated to a position where the phase adjusting tool 23 can be sleeved on the splines at the output ends of the first output shaft 16 and the second output shaft 17, so as to ensure the in-phase requirement of the double output shafts;

[0040] ​

[0041] b: a first spline sleeve 13 and a second spline sleeve 20 are respectively sleeved on the splines of a group of split shafts and merging shafts;

[0042] Specifically, the first spline sleeve 13 and the second spline sleeve 20 are respectively sleeved on the splines of the second split shaft 21 and the second merging shaft 19 located in the lower part of the gear box; the second merging gear 18 is tightened clockwise, the working surface is kept in abutment with the second output shaft 17, then the second split shaft 21 is assembled with the first spline sleeve 13, the second merging shaft 19 is assembled with the second spline sleeve 20, the working tooth surface of the second split shaft 21 and the first spline sleeve 13 is ensured to be in abutment, and the working tooth surface of the second merging shaft 19 and the second spline sleeve 20 is ensured to be in abutment;

[0043] c: the first spline sleeve 13 and the second spline sleeve 20 are fastened together by fasteners, and are marked with alignment marks;

[0044] Specifically, the shank of the bolt is passed through the first waist hole 1 and the second waist hole 3 and cooperates with the nut to press and fasten the first spline sleeve 13 and the second spline sleeve 20 together, and alignment marks are marked on the outer circular side surface of the first spline sleeve 13 and the second spline sleeve 20;

[0045] d: disassemble the first spline sleeve 13 and the second spline sleeve 20, align them according to the alignment marks, and drill positioning pin holes in the end surfaces in the axial direction;

[0046] The positioning pin holes are at least two and are uniformly arranged along the circumference; specifically, the number of the positioning pin holes is 12, which are composed of 12 first pin holes 2 on the first flange plate and 12 second pin holes 4 on the second flange plate, the first pin holes 2 are blind holes, and the second pin holes 4 are through holes;

[0047] e: the first spline sleeve 13 and the second spline sleeve 20 are respectively sleeved on the splines of the group of split shafts and merging shafts, and then the pins are assembled in the positioning pin holes;

[0048] The second spline sleeve 20 is also provided with a plurality of screw holes 5, and after the pins are assembled in step e, a plurality of bolts are used to cooperate with the screw holes 5 to press a pressing plate tightly on the right end surface of the second spline sleeve 20 to prevent the pins from slipping out;

[0049] f: another first spline sleeve 13 and another second spline sleeve 20 are respectively sleeved on the splines of another group of split shafts and merging shafts, and then steps c-e are repeated.

[0050] Specifically, the first spline sleeve 13 and the second spline sleeve 20 are sleeved on the splines of the first split shaft 12 and the first combined shaft 14 located at the upper part of the gear box respectively; the first combined gear 15 is tightened clockwise, the working surface is kept abutting against the second output shaft 17, then the first split shaft 12 is assembled with the first spline sleeve 13, the first combined shaft 14 is assembled with the second spline sleeve 20, the spline working tooth surface of the first split shaft 12 and the first spline sleeve 13 is guaranteed to be abutted, and the spline working tooth surface of the first combined shaft 14 and the second spline sleeve 20 is guaranteed to be abutted.

[0051] Compared with the problem that the synchronous adjustment process of the double-output shaft of the gear box of the double-screw extruder in the prior art is relatively complicated and the cost is relatively high, the first spline sleeve 13 and the second spline sleeve 20 are designed, the adjustment process is combined, the synchronous adjustment of the double-output shaft is effectively realized, the phase adjustment tool 23 is designed, the same-phase adjustment of the double-output shaft is effectively realized, and therefore the synchronous and same-phase adjustment of the double-output shaft of the gear box of the double-screw extruder is realized, the adjustment device has a simple structure, the adjustment process is simple, the cumbersome process of ensuring the centering of the teeth and the spline by means of line marking rough positioning and three-coordinate measurement precise positioning is not needed, and the production manufacturing cost is reduced.

[0052] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A synchronous adjustment device of a gear box of a twin-screw extruder, characterized by, The first spline sleeve (13) and the second spline sleeve (20) are respectively provided with a first waist hole (1) and a second waist hole (3) in the axial direction, the length direction of the first waist hole (1) and the second waist hole (3) is along the circumferential tangent direction, the fastener comprises a bolt and a nut, the screw rod of the bolt can cooperate with the nut after penetrating through the first waist hole (1) and the second waist hole (3). The first waist hole (1) and the second waist hole (3) are equal in number and at least two; the first waist hole (1) and the second waist hole (3) are uniformly arranged on the first spline sleeve (13) and the second spline sleeve (20) along the circumferential direction respectively. The first spline sleeve (13) and the second spline sleeve (20) are respectively formed with a first flange plate and a second flange plate, and the first waist hole (1) and the second waist hole (3) are arranged on the first flange plate and the second flange plate respectively. Further comprising a phase adjusting tool (23), the phase adjusting tool (23) is provided with a first spline hole (24) and a second spline hole (25) which are parallel to each other and have the same size, and the line connecting the tooth groove midpoint of the two closest teeth is collinear with the line connecting the hole centers of the two. The steps include:

2. A method of adjusting the synchronizing adjustment device of the gear box of the twin-screw extruder according to claim 1, characterized in that, a: rotating each transmission shaft so that the working tooth surfaces between the transmission teeth are in close contact; b: one first spline sleeve (13) and one second spline sleeve (20) are respectively sleeved on the spline of one set of split shafts and flow shafts; c: the first spline sleeve (13) and the second spline sleeve (20) are fastened together by the fastener, and the alignment mark is marked on them; d: disassemble the first spline sleeve (13) and the second spline sleeve (20), align them according to the alignment mark, and drill an axial positioning pin hole on the end face of each; e: the first spline sleeve (13) and the second spline sleeve (20) are respectively sleeved on the spline of the set of split shafts and flow shafts, and then a pin is inserted into the positioning pin hole; f: another first spline sleeve (13) and another second spline sleeve (20) are respectively sleeved on the spline of another set of split shafts and flow shafts, and then steps c-e are repeated. In step b, the first spline sleeve (13) and the second spline sleeve (20) are respectively sleeved on the spline of the second split shaft (21) and the second flow shaft (19) located in the lower part of the gear box; in step f, the first spline sleeve (13) and the second spline sleeve (20) are respectively sleeved on the spline of the first split shaft (12) and the first flow shaft (14) located in the upper part of the gear box.

3. The adjustment method of the synchronous adjustment device of the gear case of the twin-screw extruder according to claim 2, characterized in that: The positioning pin hole in step d is at least two and is uniformly arranged along the circumference.

4. The adjustment method of the synchronous adjustment device of the gear case of the twin-screw extruder according to claim 2, characterized in that: The first spline sleeve (13) and the second spline sleeve (20) are respectively provided with a first waist hole (1) and a second waist hole (3) in the axial direction, the length direction of the first waist hole (1) and the second waist hole (3) is along the circumferential tangent direction, the fastener comprises a bolt and a nut, the screw rod of the bolt can cooperate with the nut after penetrating through the first waist hole (1) and the second waist hole (3). The first waist hole (1) and the second waist hole (3) are equal in number and at least two; the first waist hole (1) and the second waist hole (3) are uniformly arranged on the first spline sleeve (13) and the second spline sleeve (20) along the circumferential direction respectively. The first spline sleeve (13) and the second spline sleeve (20) are respectively formed with a first flange plate and a second flange plate, and the first waist hole (1) and the second waist hole (3) are arranged on the first flange plate and the second flange plate respectively. Further comprising a phase adjusting tool (23), the phase adjusting tool (23) is provided with a first spline hole (24) and a second spline hole (25) which are parallel to each other and have the same size, and the line connecting the tooth groove midpoint of the two closest teeth is collinear with the line connecting the hole centers of the two. The steps include: a: rotating each transmission shaft so that the working tooth surfaces between the transmission teeth are in close contact; b: one first spline sleeve (13) and one second spline sleeve (20) are respectively sleeved on the spline of one set of split shafts and flow shafts; c: the first spline sleeve (13) and the second spline sleeve (20) are fastened together by the fastener, and the alignment mark is marked on them; d: disassemble the first spline sleeve (13) and the second spline sleeve (20), align them according to the alignment mark, and drill an axial positioning pin hole on the end face of each; e: the first spline sleeve (13) and the second spline sleeve (20) are respectively sleeved on the spline of the set of split shafts and flow shafts, and then a pin is inserted into the positioning pin hole; f: another first spline sleeve (13) and another second spline sleeve (20) are respectively sleeved on the spline of another set of split shafts and flow shafts, and then steps c-e are repeated. In step b, the first spline sleeve (13) and the second spline sleeve (20) are respectively sleeved on the spline of the second split shaft (21) and the second flow shaft (19) located in the lower part of the gear box; in step f, the first spline sleeve (13) and the second spline sleeve (20) are respectively sleeved on the spline of the first split shaft (12) and the first flow shaft (14) located in the upper part of the gear box. The positioning pin hole in step d is at least two and is uniformly arranged along the circumference.

5. The adjustment method of the synchronous adjustment device of the gear case of the twin-screw extruder according to claim 2, characterized in that, Between step a and step b, there is also step a1: the phase adjusting tool (23) is sleeved on the first output shaft (16) and the second output shaft (17) through the first spline hole (24) and the second spline hole (25) on the phase adjusting tool (23) respectively.

Images