Assembling machine of large-scale synchronous motor

Abstract

The utility model discloses an assembly machine of a large-scale synchronous motor. The assembly machine comprises a workbench, a stator translation device, a rotor carrying device, a lifting platform, an upper tip device, a lower tip, a carrier plate and a rotor placing rack. The lifting table and the lower tip are arranged in the center in the workbench, and the upper tip device is arranged on the workbench and corresponds to the lower tip; the stator translation device and the rotor carrying device are installed on the workbench. The stator translation device drives the carrier plate to translate; the lifting table can place the carrier plate and drive the carrier plate to ascend and descend. The rotor carrying device comprises a rotor translation mechanism and a rotor lifting mechanism, the rotor placing rack is arranged on the rotor lifting mechanism, the rotor translation mechanism drives the rotor lifting mechanism to translate, and the rotor lifting mechanism drives the rotor placing rack to lift; the upper tip device and the lower tip position upper and lower center holes of the rotor respectively; the utility model is applied to the stator and rotor assembly process of a large-scale synchronous motor, can keep the stator and the rotor concentric, avoids the damage of the bearing, the stator and the rotor, and improves the yield of the motor.

Description

Technical Field

[0001] The utility model relates to the field of equipment for assembling motors, and is applied to the assembly process of stators and rotors of large synchronous motors, in particular to an assembly machine for large synchronous motors. Background Art

[0002] Large synchronous motors are relatively heavy. Usually, the stator weighs more than 200 KG and the rotor weighs more than 100 KG. Therefore, in the assembly process of the stator and the rotor, it is rather inconvenient to adopt the manual assembly method. If the existing assembly machine is used for the assembly of the stator and the rotor, during the assembly process, since there are magnetic steels on the rotor, the rotor and the stator are prone to be attracted together. Therefore, it is difficult to avoid the following problems during the assembly:

[0003] First, after the stator and the rotor are attracted together, the motor bearings and the bearing chambers are not concentric. At this time, if the assembly of the stator and the rotor is forced, the risk of damaging the bearings is very high; second, during the assembly process, since the stator and the rotor are attracted together, they will rub against each other, and it is easy to cause scratches on the stator and the rotor during the assembly; third, since the stator and the rotor are prone to be attracted together, after the assembly is completed, the stator and the rotor are prone to be non-concentric, and at this time, some electrical performances of the motor will be affected; fourth, after the assembly is completed, the stator and the rotor are located inside the assembly machine, and it is impossible to directly use the lifting equipment to take out the stator and the rotor.

[0004] In summary, the existing assembly method for the stator and the rotor of large synchronous motors has problems such as being prone to damage the bearings, scratch the stator and the rotor, the stator and the rotor are prone to be non-concentric, and the stator and the rotor cannot be easily taken out of the assembly machine; therefore, an assembly machine for large synchronous motors is needed to solve the above problems. Summary of the Utility Model

[0005] The main technical problem to be solved by the utility model is: the existing assembly method for the stator and the rotor has problems such as being prone to damage the bearings, scratch the stator and the rotor, the stator and the rotor are prone to be non-concentric, and the stator and the rotor cannot be easily taken out of the assembly machine.

[0006] To solve the above technical problem, a technical solution adopted by the utility model is: to provide an assembly machine for large synchronous motors, including: a workbench, a stator translation device, a rotor handling device, a lifting table, an upper center device, a lower center, a carrier plate, and a rotor placement rack;

[0007] The lifting table is arranged inside the workbench, and a first opening is formed on the upper surface of the workbench corresponding to the position of the lifting table; the lower center point is vertically fixed inside the workbench, and the lower center point penetrates through the lifting table and extends to the first opening; the upper center point device is installed on the upper surface of the workbench and is arranged corresponding to the upper part of the lower center point; on the upper surface of the workbench, a stator feeding area and a rotor feeding area are respectively arranged on both sides of the first opening, and the stator translation device and the rotor handling device are respectively installed in the stator feeding area and the rotor feeding area; a pair of horizontally arranged horizontal slide rails are fixed on the upper surface of the workbench, and the horizontal slide rails extend from the stator feeding area to the rotor feeding area;

[0008] The rotor handling device includes a rotor translation mechanism and a rotor lifting mechanism installed on the rotor translation mechanism. The rotor placement rack is fixed on the rotor lifting mechanism, and the rotor placement rack is used for carrying the rotor; the rotor translation mechanism is used to drive the rotor lifting mechanism to move between the rotor feeding area and the first opening, and the rotor lifting mechanism is used to drive the rotor placement rack to make a lifting motion;

[0009] The carrier plate is used for carrying the stator, and the stator translation device is used to transport the carrier plate carrying the stator from the stator feeding area to the first opening; the lifting table is used to pick up the carrier plate from the stator translation device and drive the carrier plate to make a linear motion in the vertical direction; the rotor handling device is used to insert the rotor into the stator on the lifting table, and the upper center point device and the lower center point are used to position the upper and lower center holes of the motor rotor shaft during the process of inserting the rotor into the stator. The stator translation device is also used to transport the carrier plate carrying the stator and the rotor from the first opening to the stator feeding area.

[0010] As an improved scheme, a stator positioning ring is fixed at the center of the carrier plate. The stator positioning ring is used to position the stator, and a through hole is formed at the position corresponding to the center of the stator positioning ring on the carrier plate; a pair of first pin holes and a pair of second pin holes are formed around the stator positioning ring on the carrier plate. The connecting line of the center points of the two first pin holes is perpendicular to the horizontal slide rail on the horizontal plane, and the connecting line of the center points of the two second pin holes is parallel to the horizontal slide rail.

[0011] As an improved scheme, the stator translation device includes a first slide rail, a first lead screw, a first bearing seat, a first motor, a first synchronous belt, a first moving plate and a first connecting plate;

[0012] The first slide rail is fixedly mounted on the stator loading area of the workbench parallel to the horizontal slide rail, and a first slider is provided on the first slide rail; the first lead screw is mounted on the upper surface of the workbench near the first slide rail through the first bearing block, and the first lead screw is parallel to the first slide rail. A first lead screw nut is sleeved on the first lead screw; the first motor is fixed in the workbench, and first synchronous pulleys are mounted on the main shaft of the first motor and the end of the first lead screw respectively. The first synchronous belt is wound around the first synchronous pulleys, and the first motor drives the first lead screw through the first synchronous belt; a first avoidance opening is formed in the upper surface of the workbench corresponding to the position of the first synchronous belt.

[0013] The first moving plate is mounted on the horizontal slide rail through a slider, and the first connecting plate is respectively connected to the first moving plate, the first lead screw nut and the first slider;

[0014] A notch is formed on one side of the first moving plate close to the first opening, and a pair of first pins matching the first pin holes are fixed at a position of the first moving plate close to the notch; the carrier plate can be placed on the first moving plate through the cooperation of the first pin holes and the first pins.

[0015] As an improved scheme, the lifting table includes a second slide rail, a second lead screw, a second bearing block, a commutator, a second motor, a transmission shaft, a lifting seat and a rotary pressing cylinder;

[0016] There are several second slide rails, and several second slide rails are vertically fixed in the workbench. A second slider is mounted on each second slide rail; the second lead screw is mounted in the workbench near the second slide rail through the second bearing block, and the second lead screw is parallel to the second slide rail. A second lead screw nut is sleeved on the second lead screw; the commutator is mounted in the workbench near the lower end of the second lead screw, and the output end of the commutator is connected to the lower end of the second lead screw through a coupling; the second motor is fixed in the workbench, the transmission shaft is horizontally arranged, and the two ends of the transmission shaft are respectively connected to the main shaft of the second motor and the input end of the commutator through couplings; the commutator is a gear commutator.

[0017] The side surface of the lifting seat is connected to several second sliders, a connecting block is fixed on the side surface of the lifting seat, and the connecting block is connected to the second lead screw nut; the upper surface of the lifting seat is horizontal, and a carrier plate placement area matching the size of the carrier plate is provided on the upper surface of the lifting seat; a second avoidance opening is formed at the center of the carrier plate placement area on the lifting seat, and the lower center point passes through the second avoidance opening; there are several rotary pressing cylinders, and several rotary pressing cylinders are fixed on the upper surface of the lifting seat around the carrier plate placement area.

[0018] The size of the notch on the first moving plate is larger than that of the lifting seat; a pair of second pins matching the second pin holes are fixed on the upper surface of the lifting seat within the carrier plate placement area; the carrier plate can be placed on the lifting seat through the cooperation of the second pin holes and the second pins; when the carrier plate is placed on the lifting seat, the rotary pressing cylinder is used to press the carrier plate.

[0019] As an improved scheme, the rotor translation mechanism includes a third slide rail, a third lead screw, a third bearing block, a third motor, a third synchronous belt, a third moving plate, a third connecting plate and a rotor translation seat;

[0020] The third slide rail is fixed on the rotor loading area of the workbench parallel to the horizontal slide rail, and a third slider is arranged on the third slide rail; the third lead screw is installed on the upper surface of the workbench near the third slide rail through the third bearing block, and the third lead screw is parallel to the third slide rail, and a third lead screw nut is sleeved on the third lead screw; the third motor is fixed in the workbench, third synchronous pulleys are installed at the end of the main shaft of the third motor and the end of the third lead screw, the third synchronous belt is wound around the third synchronous pulleys, and the third motor drives the third lead screw through the third synchronous belt; a third avoidance opening is formed in the upper surface of the workbench corresponding to the position of the third synchronous belt;

[0021] The third moving plate is installed on the horizontal slide rail through a slider, and the third connecting plate is respectively connected with the third moving plate, the third lead screw nut and the third slider; the rotor translation seat is fixed on the third moving plate;

[0022] The rotor lifting mechanism includes a lifting bracket, a plurality of fourth slide rails and a plurality of lifting cylinders; the plurality of fourth slide rails are vertically fixed in the rotor translation seat, and a fourth slider is arranged on each fourth slide rail, and the outer wall of the lifting bracket is connected with the fourth slider; the plurality of lifting cylinders are vertically fixed on the rotor translation seat, a connecting head is fixed on the outer wall of the lifting bracket corresponding to the position of the lifting cylinder, and the piston rod of the lifting cylinder is connected with the connecting head;

[0023] The rotor placement rack is fixed in the lifting bracket, and a rotor positioning ring is fixed on the rotor placement rack.

[0024] As an improved scheme, the upper center device includes an upper center, a center mounting seat, a base, a support plate, a second moving plate, a fourth moving plate, a fifth slide rail, a sixth slide rail, a first tightening cylinder, a second tightening cylinder, a first screw positioning block, a second screw positioning block, a first adjusting block, a second adjusting block, a first tightening screw and a second tightening screw;

[0025] The fifth slide rail is fixed at a position on the upper surface of the workbench near the first opening. The fifth slide rail is perpendicular to the horizontal slide rail on the horizontal plane. A fifth slider is provided on the fifth slide rail, and the base is fixed on the fifth slider. The first pressing cylinder is arranged adjacent to the first screw positioning block, and both the first pressing cylinder and the first screw positioning block are fixed at a position on the upper surface of the workbench near one side of the base. The first adjusting block is fixed on one side of the base, and one end of the first adjusting block extends out of the base and extends between the first pressing cylinder and the first screw positioning block. The piston rod of the first pressing cylinder is parallel to the fifth slide rail, and the end of the piston rod of the first pressing cylinder abuts against one side of the first adjusting block. The axis of the first pressing screw is parallel to the fifth slide rail. The first pressing screw is screwed into and penetrates through the first screw positioning block, and the end of the first pressing screw abuts against the other side of the first adjusting block.

[0026] The support plate is vertically fixed on the base. A vertically arranged sixth slide rail and an upper center driving cylinder are fixed on the support plate. A sixth slider is provided on the sixth slide rail, and the second moving plate is fixed on the sixth slider. The piston rod of the upper center driving cylinder is connected to the second moving plate through a floating joint.

[0027] The sixth slide rail is fixed on the second moving plate and is parallel to the horizontal slide rail. A sixth slider is provided on the sixth slide rail, and the fourth moving plate is fixed on the sixth slider. The second pressing cylinder is arranged adjacent to the second screw positioning block, and both the second pressing cylinder and the second screw positioning block are fixed at a position on the second moving plate near one side of the fourth moving plate. The second adjusting block is fixed on one side of the fourth moving plate, and one end of the second adjusting block extends out of the fourth moving plate and extends between the second pressing cylinder and the second screw positioning block. The piston rod of the second pressing cylinder is parallel to the sixth slide rail, and the end of the piston rod of the second pressing cylinder abuts against one side of the second adjusting block. The axis of the second pressing screw is parallel to the sixth slide rail. The second pressing screw is screwed into and penetrates through the second screw positioning block, and the end of the second pressing screw abuts against the other side of the second adjusting block.

[0028] The center mounting seat is fixed on the fourth moving plate, and the upper center is vertically mounted on the center mounting seat.

[0029] The beneficial effects of the present utility model are as follows: When applied to the stator-rotor assembly process of a large synchronous motor, it can ensure that the stator and rotor of the motor remain concentric, guaranteeing that the electrical performance of the motor is not affected by the assembly process; it can avoid damage to the bearings and prevent abrasion between the stator and rotor, thereby improving the yield rate of the motor; after the assembly is completed, the stator and rotor can be easily taken out of the assembly machine. Brief Description of the Drawings

[0030] Figure 1 is a schematic three-dimensional structure diagram of an assembly machine for a large synchronous motor of the present utility model;

[0031] Figure 2 is a schematic three-dimensional structure diagram of the stator translation device in the assembly machine for a large synchronous motor of the present utility model when no stator is placed;

[0032] Figure 3 is a schematic three-dimensional structure diagram of the stator translation device in the assembly machine for a large synchronous motor of the present utility model when a stator is placed;

[0033] Figure 4 is a schematic three-dimensional structure diagram of the lifting platform in the assembly machine for a large synchronous motor of the present utility model when it is in the initial position;

[0034] Figure 5 is a schematic three-dimensional structure diagram of the lifting platform in the assembly machine for a large synchronous motor of the present utility model during the ascending process;

[0035] Figure 6 is a schematic three-dimensional structure diagram of the rotary pressing cylinder in the assembly machine for a large synchronous motor of the present utility model pressing the carrier plate;

[0036] Figure 7 is a schematic three-dimensional structure diagram of the lifting platform in the assembly machine for a large synchronous motor of the present utility model when carrying the stator back into the workbench;

[0037] Figure 8 is a schematic three-dimensional structure diagram of the rotor handling device in the assembly machine for a large synchronous motor of the present utility model when it is in the initial position;

[0038] Figure 9 is a schematic three-dimensional structure diagram of another perspective of the rotor handling device in the assembly machine for a large synchronous motor of the present utility model;

[0039] Figure 10 is a schematic three-dimensional structure diagram of the upper center device in the assembly machine for a large synchronous motor of the present utility model;

[0040] Figure 11 is a partial schematic three-dimensional structure diagram of the upper center device in the assembly machine for a large synchronous motor of the present utility model;

[0041] Figure 12It is a three-dimensional structural schematic diagram of the positioning of the upper center point to the center hole of the rotor in the assembly machine of the large synchronous motor of the present utility model;

[0042] Figure 13 It is a three-dimensional structural schematic diagram of the positioning of the upper center point and the lower center point to the rotor in the assembly machine of the large synchronous motor of the present utility model;

[0043] Figure 14 It is a three-dimensional structural schematic diagram of the assembly process of the stator and the rotor in the assembly machine of the large synchronous motor of the present utility model;

[0044] Figure 15 It is another three-dimensional structural schematic diagram of the assembly process of the stator and the rotor in the assembly machine of the large synchronous motor of the present utility model;

[0045] Figure 16 It is a three-dimensional structural schematic diagram of the completed assembly of the stator and the rotor in the assembly machine of the large synchronous motor of the present utility model;

[0046] The markings of each component in the attached drawings are as follows: 1. Stator translation device; 2. Lifting table; 3. Rotor translation mechanism; 4. Rotor lifting mechanism; 5. Upper center point device; 6. Carrier plate; 7. Rotor placement rack; 8. Lower center point; 9. Workbench; 10. Horizontal slide rail;

[0047] 11. First slide rail; 12. First lead screw; 13. First bearing seat; 14. First synchronous belt; 15. First moving plate; 16. First connecting plate; 17. First pin;

[0048] 21. Second slide rail; 22. Commutator; 23. Second motor; 24. Transmission shaft; 25. Lifting seat; 26. Rotary pressing cylinder; 27. Second pin;

[0049] 31. Rotor translation seat; 32. Third moving plate; 33. Third slide rail; 34. Third synchronous belt; 35. Third connecting plate; 36. Third lead screw;

[0050] 41. Lifting bracket; 42. Lifting cylinder; 43. Fourth slide rail;

[0051] 51. Upper center point; 52. Base; 53. Support plate; 54. First adjustment block; 55. Upper center point driving cylinder; 56. Center point mounting seat; 57. Second moving plate; 58. Fourth moving plate; 59. Second adjustment block; 510. Second pressing cylinder; 511. Second pressing screw;

[0052] 61. Stator positioning ring; 62. First pin hole; 63. Second pin hole. Detailed implementation manners

[0053] The following elaborates on the preferred embodiments of the present utility model in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making the protection scope of the present utility model more clearly defined.

[0054] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "side", "center", "one side", "the other side", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0055] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth" may explicitly or implicitly include at least one such feature.

[0056] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above" and "on the upper surface" of the second feature can be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below" and "on the lower surface" of the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0058] Please refer to Figure 1-16 , the embodiments of the present utility model include:

[0059] An assembly machine for a large synchronous motor, comprising: a workbench 9, a stator translation device 1, a rotor handling device, a lifting table 2, an upper center device 5, a lower center 8, a carrier plate 6, and a rotor placement rack 7.

[0060] The workbench 9 includes a bracket and a panel fixed on the top of the bracket; the lifting table 2 is arranged on the bracket of the workbench 9, and a first opening is formed in the panel of the workbench 9 at a position corresponding to the lifting table 2; a lower center point 8 mounting plate is fixed on the bracket of the workbench 9, the lower center point 8 is vertically fixed on the lower center point 8 mounting plate, and the lower center point 8 penetrates through the lifting table 2 and extends to the first opening; the upper center point device 5 is installed on the panel of the workbench 9 and is arranged corresponding to the upper side of the lower center point 8; on both sides of the first opening on the panel of the workbench 9, a stator loading area and a rotor loading area are respectively arranged, and the stator translation device 1 and the rotor handling device are respectively installed in the stator loading area and the rotor loading area; a pair of horizontally arranged horizontal slide rails 10 are fixed on the panel of the workbench 9, the horizontal slide rails 10 extend from the stator loading area to the rotor loading area, and the first opening is located in the area between the two horizontal slide rails 10.

[0061] The rotor handling device includes a rotor translation mechanism 3 and a rotor lifting mechanism 4. The rotor translation mechanism 3 is installed on the panel of the workbench 9, the rotor lifting mechanism 4 is installed on the rotor translation mechanism 3, the rotor placement rack 7 is fixed on the rotor lifting mechanism 4, and the rotor placement rack 7 is used for carrying the rotor; the rotor translation mechanism 3 is used to drive the rotor lifting mechanism 4 to move between the rotor loading area and the first opening, and the rotor lifting mechanism 4 is used to drive the rotor placement rack 7 to make a lifting motion.

[0062] The carrier plate 6 is used for carrying the stator, and the stator translation device 1 is used to transport the carrier plate 6 carrying the stator from the stator loading area to the first opening; the lifting table 2 is used to pick up the carrier plate 6 from the stator translation device 1 and drive the carrier plate 6 to make a linear motion in the vertical direction; the rotor handling device is used to insert the rotor into the stator on the lifting table 2, and the upper center point device 5 and the lower center point 8 are used to position the upper and lower center holes of the motor rotor shaft during the process of inserting the rotor into the stator, and the stator translation device 1 is also used to transport the carrier plate 6 carrying the stator and the rotor from the first opening to the stator loading area.

[0063] As an implementation manner, a stator positioning ring 61 is fixed at the center of the carrier plate 6, the stator positioning ring 61 is used to position the stator, and a through hole is formed in the carrier plate 6 at a position corresponding to the center of the stator positioning ring 61; a pair of first pin holes 62 and a pair of second pin holes 63 are formed in the carrier plate 6 around the stator positioning ring 61, and the connection line of the center points of the two first pin holes 62 is perpendicular to the horizontal slide rail 10 on the horizontal plane, and the connection line of the center points of the two second pin holes 63 is parallel to the horizontal slide rail 10.

[0064] As an implementation manner, the stator translation device 1 includes a first slide rail 11, a first lead screw 12, a first bearing block 13, a first motor, a first synchronous belt 14, a first moving plate 15, and a first connecting plate 16.

[0065] The first slide rail 11 is fixedly arranged on the stator loading area of the workbench 9 parallel to the horizontal slide rail 10, and a first slider is arranged on the first slide rail 11; the first lead screw 12 is installed on the panel of the workbench 9 near the first slide rail 11 through the first bearing block 13, and the first lead screw 12 is parallel to the first slide rail 11, and a first lead screw nut is sleeved on the first lead screw 12; the first motor is fixed below the panel of the workbench 9 or on the bracket, first synchronous pulleys are installed at the end parts of the main shaft of the first motor and the first lead screw 12, the first synchronous belt 14 is wound around the first synchronous pulleys, and the first motor drives the first lead screw 12 through the first synchronous belt 14; a first avoidance opening is formed in the panel of the workbench 9 corresponding to the position of the first synchronous belt 14.

[0066] The first moving plate 15 is installed on the horizontal slide rail 10 through a slider, and the first connecting plate 16 is respectively connected with the first moving plate 15, the first lead screw nut, and the first slider.

[0067] A notch is formed in one side of the first moving plate 15 close to the first opening, and a pair of first pins 17 matching the first pin holes 62 are fixed at a position of the first moving plate 15 close to the notch; the carrier plate 6 can be placed on the first moving plate 15 through the cooperation of the first pin holes 62 and the first pins 17.

[0068] As an implementation manner, the lifting platform 2 includes a second slide rail 21, a second lead screw, a second bearing block, a commutator 22, a second motor 23, a transmission shaft 24, a lifting seat 25, and a rotary pressing cylinder 26.

[0069] There are several second slide rails 21, and the several second slide rails 21 are vertically fixed on the bracket of the workbench 9. A second slider is installed on each second slide rail 21; the second lead screw is installed on the bracket of the workbench 9 near the second slide rail 21 through the second bearing block, and the second lead screw is parallel to the second slide rail 21. A second lead screw nut is sleeved on the second lead screw; the commutator 22 is installed on the bracket of the workbench 9 near the lower end of the second lead screw, and the output end of the commutator 22 is connected to the lower end of the second lead screw through a coupling; the second motor 23 is fixed at the position of the bottom of the bracket, the transmission shaft 24 is horizontally arranged, and both ends of the transmission shaft 24 are respectively connected to the main shaft of the second motor 23 and the input end of the commutator 22 through couplings; the commutator 22 is a gear commutator.

[0070] The side of the lifting seat 25 is connected to several second sliders. A connecting block is fixed on the side of the lifting seat 25, and the connecting block is connected to the second lead screw nut; the upper surface of the lifting seat 25 is horizontal, and a placement area for the carrier plate 6 matching the size of the carrier plate 6 is provided on the upper surface of the lifting seat 25; a second avoidance opening is provided at the center of the carrier plate 6 placement area on the lifting seat 25, and the lower center point 8 passes through the second avoidance opening; there are several rotary pressing cylinders 26, and the several rotary pressing cylinders 26 are fixed on the upper surface of the lifting seat 25 around the carrier plate 6 placement area.

[0071] The size of the notch on the first moving plate 15 is larger than that of the lifting seat 25, and the size of the carrier plate 6 is larger than the notch size; a pair of second pins 27 matching the second pin holes 63 are fixed in the carrier plate 6 placement area on the upper surface of the lifting seat 25; the lifting platform 2 is used to place the carrier plate 6. Specifically, the carrier plate 6 can be placed on the lifting seat 25 through the cooperation of the second pin holes 63 and the second pins 27; when the carrier plate 6 is placed on the lifting seat 25, the rotary pressing cylinder 26 is used to press the carrier plate 6; it should be noted that Figure 1 in order to simultaneously show how the first moving plate 15 and the lifting seat 25 position the carrier plate 6, so in Figure 1 both the first moving plate 15 and the lifting seat 25 are drawn with the carrier plate 6, but in the actual production process, there is only one carrier plate 6.

[0072] As an implementation manner, the rotor translation mechanism 3 includes a third slide rail 33, a third lead screw 36, a third bearing block, a third motor, a third synchronous belt 34, a third moving plate 32, a third connecting plate 35 and a rotor translation seat 31.

[0073] The third slide rail 33 is fixedly mounted on the rotor loading area parallel to the horizontal slide rail 10. A third slider is provided on the third slide rail 33. The third lead screw 36 is mounted on the panel of the workbench 9 near the third slide rail 33 through the third bearing block, and the third lead screw 36 is parallel to the third slide rail 33. A third lead screw nut is sleeved on the third lead screw 36. The third motor is fixed below the panel or on the bracket. Third synchronous pulleys are mounted on the end portions of the main shaft of the third motor and the third lead screw 36 respectively. The third synchronous belt 34 is wound around the third synchronous pulleys. The third motor drives the third lead screw 36 through the third synchronous belt 34. A third avoidance opening is formed in the panel of the workbench 9 corresponding to the position of the third synchronous belt 34.

[0074] A notch is formed in one side of the third moving plate 32 close to the first opening. The third moving plate 32 is mounted on the horizontal slide rail 10 through a slider. The third connecting plate 35 is respectively connected with the third moving plate 32, the third lead screw nut and the third slider. The rotor translation seat 31 is fixed on the third moving plate 32.

[0075] The rotor lifting mechanism 4 includes a lifting bracket 41, a plurality of fourth slide rails 43 and a plurality of lifting cylinders 42. The plurality of fourth slide rails 43 are vertically fixed in the rotor translation seat 31. A fourth slider is provided on each of the fourth slide rails 43. The outer wall of the lifting bracket 41 is connected with the fourth slider. The plurality of lifting cylinders 42 are vertically fixed on the rotor translation seat 31. Connection heads are fixed on the outer wall of the lifting bracket 41 corresponding to the positions of the lifting cylinders 42. The piston rods of the lifting cylinders 42 are connected with the connection heads.

[0076] The rotor placement rack 7 is fixed in the lifting bracket 41. A rotor positioning ring is fixed on the rotor placement rack 7. A notch is provided at the position of the rotor positioning ring facing the first opening.

[0077] As an implementation manner, the upper center device 5 includes an upper center 51, a center mounting seat 56, a base 52, a support plate 53, a second moving plate 57, a fourth moving plate 58, a fifth slide rail, a sixth slide rail, a first clamping cylinder, a second clamping cylinder 510, a first screw positioning block, a second screw positioning block, a first adjusting block 54, a second adjusting block 59, a first clamping screw and a second clamping screw 511.

[0078] The fifth slide rail is fixed on the upper surface of the panel of the workbench 9 near the first opening. The fifth slide rail is perpendicular to the horizontal slide rail 10 on the horizontal plane. A fifth slider is provided on the fifth slide rail, and the base 52 is fixed on the fifth slider. The first tightening cylinder is arranged adjacent to the first screw positioning block, and both the first tightening cylinder and the first screw positioning block are fixed on the panel near one side of the base 52. The first adjusting block 54 is fixed on one side of the base 52. One end of the first adjusting block 54 extends out of the base 52 and extends between the first tightening cylinder and the first screw positioning block. The piston rod of the first tightening cylinder is parallel to the fifth slide rail, and the end of the piston rod of the first tightening cylinder abuts against one side of the first adjusting block 54. The axis of the first tightening screw is parallel to the fifth slide rail. The first tightening screw is screwed into and penetrates through the first screw positioning block, and the end of the first tightening screw abuts against the other side of the first adjusting block 54. Rotating the first tightening screw can control the length of the first tightening screw extending out of the first screw positioning block. Furthermore, the first tightening screw can control the relative position between the first adjusting block 54 and the first screw positioning block. After the adjustment is in place, the first tightening cylinder and the first tightening screw tightly clamp the first adjusting block 54. The position of the base 52 can be finely adjusted through the above structure.

[0079] The support plate 53 is vertically fixed on the base 52. A sixth slide rail and an upper center driving cylinder 55 arranged vertically are fixed on the support plate 53. A sixth slider is provided on the sixth slide rail, and the second moving plate 57 is fixed on the sixth slider. The piston rod of the upper center driving cylinder 55 is connected to the second moving plate 57 through a floating joint.

[0080] The sixth slide rail is fixed on the second moving plate 57 and is parallel to the horizontal slide rail 10. A sixth slider is provided on the sixth slide rail, and the fourth moving plate 58 is fixed on the sixth slider; the second pressing cylinder 510 is arranged adjacent to the second screw positioning block, and both the second pressing cylinder 510 and the second screw positioning block are fixed at a position on the second moving plate 57 close to the side of the fourth moving plate 58; the second adjusting block 59 is fixed on one side of the fourth moving plate 58, and one end of the second adjusting block 59 extends out of the fourth moving plate 58 and extends between the second pressing cylinder 510 and the second screw positioning block; the piston rod of the second pressing cylinder 510 is parallel to the sixth slide rail and the end of the piston rod of the second pressing cylinder 510 abuts against one side of the second adjusting block 59. The axis of the second pressing screw 511 is parallel to the sixth slide rail. The second pressing screw 511 is screwed into and penetrates through the second screw positioning block, and the end of the second pressing screw 511 abuts against the other side of the second adjusting block 59; by rotating the second pressing screw 511, the length of the second pressing screw 511 extending out of the second screw positioning block can be controlled. Furthermore, the second pressing screw 511 can control the relative position between the second adjusting block 59 and the second screw positioning block. After the adjustment is in place, the second pressing cylinder 510 and the second pressing screw 511 tightly press the second adjusting block 59. Through the above structure, the position of the fourth moving plate 58 can be finely adjusted.

[0081] The center drill mounting seat 56 is fixed on the fourth moving plate 58, and the center drill 51 is vertically mounted on the center drill mounting seat 56.

[0082] As an implementation manner, the first slide rail 11, the second slide rail 21, the third slide rail 33, the fourth slide rail 43, the fifth slide rail, and the sixth slide rail are all linear slide rails.

[0083] As an implementation manner, dust covers are fixed on the panel of the workbench 9 corresponding to the positions of the first lead screw 12 and the third lead screw 36, and a dust cover is also fixed on the bracket of the workbench 9 corresponding to the position of the second lead screw.

[0084] When the stator and rotor of the present utility model are assembled, first, each device is reset. See Figure 2 , the initial position of the first moving plate 15 in the stator translation device 1 is located in the stator loading area. The carrier plate 6 is placed on the first moving plate 15, and the first pin 17 on the first moving plate 15 is inserted into the first pin hole 62 of the carrier plate 6 to realize the positioning of the carrier plate 6 on the first moving plate 15; the stator is hoisted above the carrier plate 6. See Figure 3, after aligning with the stator positioning ring 61, it is placed on the carrier plate 6, and the stator positioning ring 61 forms a rabbet positioning with the lower end of the stator; start the first motor, and the first motor drives the first lead screw 12 to rotate through the first synchronous belt 14. Since the first connecting plate 16 is respectively connected to the first moving plate 15, the first lead screw nut and the first slider, when the first lead screw 12 rotates, the first lead screw nut can drive the first moving plate 15 to move on the horizontal slide rail 10. First, the first moving plate 15 drives the carrier plate 6 and the stator to move to the first opening. After moving in place, align the second pin hole 63 on the carrier plate 6 with the second pin 27 on the lifting seat 25 of the lifting table 2.

[0085] See Figure 4 , the initial position of the lifting seat 25 in the lifting table 2 is located near the bottom of the workbench 9. Start the second motor 23, and the second motor 23 drives the transmission shaft 24 to rotate, and then drives the second lead screw to rotate through the commutator 22. Since the connecting block is respectively connected to the second lead screw nut and the lifting seat 25, when the second lead screw rotates, the second lead screw nut can drive the lifting seat 25 to lift along the second slide rail 21. Since there is a second avoidance opening on the lifting seat 25, during the lifting process of the lifting seat 25, the lower center point 8 will not interfere with the lifting seat 25; after the stator moves to the first opening in the previous step, the lifting seat 25 rises, and the second pin 27 on the lifting seat 25 is inserted into the second pin hole 63 of the carrier plate 6; See Figure 6 , the lifting seat 25 continues to rise to lift the carrier plate 6, so that the carrier plate 6 is separated from the first moving plate 15. The first motor controls the first moving plate 15 to return to the stator loading area, and the rotary pressing cylinder 26 on the lifting seat 25 is started to firmly press the carrier plate 6 on the lifting seat 25; See Figure 7 , then the second motor 23 controls the lifting seat 25 to descend back into the workbench 9.

[0086] See Figure 8 , the initial position of the rotor translation seat 31 in the rotor handling device is located in the rotor loading area. The piston rod of the lifting cylinder 42 in the rotor lifting mechanism 4 is in the extended state initially. Lift the rotor of the motor above the rotor placement rack 7, align it with the rotor positioning ring and then place it on the rotor placement rack 7. The rotor positioning ring forms a rabbet positioning with the external structure at the upper end of the rotor; start the third motor, and the third motor drives the third lead screw 36 to rotate through the third synchronous belt 34. Since the third connecting plate 35 is respectively connected to the third moving plate 32, the third lead screw nut and the third slider, when the third lead screw 36 rotates, the third lead screw nut can drive the third moving plate 32 to move on the horizontal slide rail 10. First, the third moving plate 32 drives the rotor translation seat 31 to move to the first opening.

[0087] The fine adjustment of the position of the base 52 can be achieved through the first clamping cylinder and the first clamping screw, and the fine adjustment of the position of the fourth moving plate 58 can be achieved through the second clamping cylinder 510 and the second clamping screw 511. Therefore, the position of the upper center point 51 can be finely adjusted; see Figure 12 , when the rotor translation base 31 drives the rotor to move to the first opening, the upper center point driving cylinder 55 in the upper center point device 5 drives the second moving plate 57 to move downward, and then drives the upper center point 51 to move downward, so that the upper center point 51 abuts against the center hole of the rotor; then the upper center point driving cylinder 55 and the lifting cylinder 42 in the rotor lifting mechanism 4 contract synchronously, and the upper center point 51 and the rotor move downward synchronously until the rear center hole of the rotor abuts against the lower center point 8. See Figure 13 , the upper center point 51 stops moving, and the lifting cylinder 42 in the rotor lifting mechanism 4 continues to contract. The rotor placement rack 7 fixed in the lifting bracket 41 continues to descend until the rotor positioning ring on the rotor placement rack 7 is disengaged from the rotor. Then, the third motor controls the rotor translation base 31 to return to the stator loading area along the horizontal slide rail 10.

[0088] See Figure 14 , the second motor 23 of the lifting table 2 drives the lifting seat 25 to move upward, thereby controlling the stator to move upward until the rotor is inserted into the stator, and the assembly of the rotor and the stator is completed. Due to the limiting of the stator by structures such as the rotary clamping cylinder 26, the second pin 27, the second pin hole 63, and the stator positioning ring 61, and the limiting of the rotor by the upper center point 51 and the lower center point 8, the concentricity of the motor stator and the rotor is ensured during the assembly process; then the second motor 23 of the lifting table 2 continues to control the carrier plate 6 to move upward, and the upper center point driving cylinder 55 in the upper center point device 5 controls the upper center point 51 to move upward, so that the carrier plate 6 and the upper center point 51 move upward synchronously. At this time, the lower center point 8 is disengaged from the center hole of the rotor. When the carrier plate 6 moves above the first moving plate 15, the second motor 23 and the upper center point driving cylinder 55 stop. The first motor in the stator translation device 1 controls the first moving plate 15 to move below the carrier plate 6. See Figure 15 , the upper center point driving cylinder 55 controls the upper center point 51 to move upward and disengage from the rotor, the rotary clamping cylinder 26 resets and releases the carrier plate 6, and the second motor 23 of the lifting table 2 controls the lifting seat 25 to move downward. During the downward movement, the carrier plate 6 is placed on the first moving plate 15, the first pin 17 is inserted into the first pin hole 62, the lifting seat 25 is disengaged from the carrier plate 6, the second pin 27 is disengaged from the second pin hole 63, and the lifting seat 25 continues to descend until it returns to the initial position. See Figure 16 , the first motor in the stator translation device 1 controls the first moving plate 15 to drive the motor on the carrier plate 6 to move to the stator loading area, completing the automatic assembly process.

[0089] The utility model is applied to the stator-rotor assembly process of large synchronous motors, which can ensure the concentricity of the motor stator and rotor, and ensure that the electrical performance of the motor is not affected by the assembly process; it can avoid damage to the bearings and avoid abrasion between the stator and rotor, thereby improving the finished product rate of the motor; after the assembly is completed, the stator and rotor can be easily taken out from the assembly machine, and the whole assembly process is fully automated with high efficiency.

[0090] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structures made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A large synchronous motor assembly machine, characterized in that: include: A workbench (9), a stator translation device (1), a rotor handling device, a lifting platform (2), an upper centering device (5), a lower centering device (8), a carrier plate (6) and a rotor placement frame (7); The lifting platform (2) is arranged in the workbench (9), and a first opening is provided on the upper surface of the workbench (9) at a position corresponding to the lifting platform (2); the lower top point (8) is vertically fixed in the workbench (9), and the lower top point (8) passes through the lifting platform (2) and extends to the first opening; the upper top point device (5) is installed on the upper surface of the workbench (9) and is arranged corresponding to the upper part of the lower top point (8); a stator loading area and a rotor loading area are respectively provided on the upper surface of the workbench (9) at both sides of the first opening, and the stator translation device (1) and the rotor handling device are respectively installed in the stator loading area and the rotor loading area; The carrier plate (6) is used to carry the stator, and the stator translation device (1) is used to drive the carrier plate (6) to move between the stator loading area and the first opening; the lifting platform (2) is used to place the carrier plate (6) and drive the carrier plate (6) to move linearly in the vertical direction; The rotor handling device comprises a rotor translation mechanism (3) and a rotor lifting mechanism (4) mounted on the rotor translation mechanism (3); the rotor placement frame (7) is fixed on the rotor lifting mechanism (4); the rotor placement frame (7) is used to carry the rotor; the rotor translation mechanism (3) is used to drive the rotor lifting mechanism (4) to move between the rotor loading area and the first opening; the rotor lifting mechanism (4) is used to drive the rotor placement frame (7) to perform lifting movement; The upper center point device (5) and the lower center point (8) are used to position the upper and lower center holes of the rotor respectively.

2. The large synchronous motor assembly machine according to claim 1, characterized in that: A pair of horizontally arranged horizontal slide rails (10) are fixed to the upper surface of the workbench (9), and the horizontal slide rails (10) extend from the stator loading area to the rotor loading area.

3. The large synchronous motor assembly machine according to claim 2, characterized in that: A stator positioning ring (61) is fixed at the center of the carrier plate (6), and the stator positioning ring (61) is used to position the stator. A through hole is provided on the carrier plate (6) at a position corresponding to the center of the stator positioning ring (61); a pair of first pin holes (62) and a pair of second pin holes (63) are provided on the carrier plate (6) around the stator positioning ring (61), and a line connecting the center points of the two first pin holes (62) is perpendicular to the horizontal slide rail (10) on a horizontal plane, and a line connecting the center points of the two second pin holes (63) is parallel to the horizontal slide rail (10).

4. The large synchronous motor assembly machine according to claim 3, characterized in that: The stator translation device (1) comprises a first slide rail (11), a first screw rod (12), a first bearing seat (13), a first motor, a first synchronous belt (14), a first moving plate (15) and a first connecting plate (16); The first slide rail (11) is parallel to the horizontal slide rail (10) and is fixed in the stator loading area of ​​the workbench (9), and a first slider is provided on the first slide rail (11); the first screw rod (12) is installed on the upper surface of the workbench (9) close to the first slide rail (11) through the first bearing seat (13), and the first screw rod (12) is parallel to the first slide rail (11), and a first screw rod nut is sleeved on the first screw rod (12); the first motor is fixed in the workbench (9), and the main shaft of the first motor and the end of the first screw rod (12) are both installed with a first synchronous wheel, the first synchronous belt (14) is wound around the first synchronous wheel, and the first motor drives the first screw rod (12) through the first synchronous belt (14); a first avoidance opening is opened on the upper surface of the workbench (9) at a position corresponding to the first synchronous belt (14); The first movable plate (15) is mounted on the horizontal slide rail (10) via a slider, and the first connecting plate (16) is respectively connected to the first movable plate (15), the first screw nut and the first slider.

5. The large synchronous motor assembly machine according to claim 4, characterized in that: A notch is provided on one side of the first movable plate (15) close to the first opening, and a pair of first pins (17) matching the first pin holes (62) are fixed to the first movable plate (15) at positions close to the notch; the carrier plate (6) can be placed on the first movable plate (15) through the cooperation between the first pin holes (62) and the first pins (17).

6. The large synchronous motor assembly machine according to claim 5, characterized in that: The lifting platform (2) comprises a second slide rail (21), a second screw rod, a second bearing seat, a commutator (22), a second motor (23), a transmission shaft (24), a lifting seat (25) and a rotary pressing cylinder (26); There are a plurality of second slide rails (21), and the plurality of second slide rails (21) are vertically fixed in the workbench (9), and a second slider is installed on each of the second slide rails (21); the second screw rod is installed in the workbench (9) near the second slide rail (21) through the second bearing seat, and the second screw rod is parallel to the second slide rail (21), and a second screw rod nut is sleeved on the second screw rod; the commutator (22) is installed in the workbench (9) near the lower end of the second screw rod, and the output end of the commutator (22) is connected to the lower end of the second screw rod through a coupling; the second motor (23) is fixed in the workbench (9), and the transmission shaft (24) is horizontally arranged, and the two ends of the transmission shaft (24) are respectively connected to the main shaft of the second motor (23) and the input end of the commutator (22) through a coupling; The side of the lifting seat (25) is connected to a plurality of the second sliding blocks, and a connecting block is fixed to the side of the lifting seat (25), and the connecting block is connected to the second screw nut; the upper surface of the lifting seat (25) is horizontal, and a carrier plate (6) placement area matching the size of the carrier plate (6) is provided on the upper surface of the lifting seat (25); a second avoidance opening is opened on the lifting seat (25) at the center of the carrier plate (6) placement area, and the lower tip (8) passes through the second avoidance opening; there are a plurality of rotary clamping cylinders (26), and the plurality of rotary clamping cylinders (26) are fixed on the upper surface of the lifting seat (25) around the carrier plate (6) placement area.

7. The large synchronous motor assembly machine according to claim 6, characterized in that: The size of the notch on the first movable plate (15) is larger than that of the lifting seat (25); a pair of second pins (27) matching the second pin holes (63) are fixed on the upper surface of the lifting seat (25) in the area where the carrier plate (6) is placed; the carrier plate (6) can be placed on the lifting seat (25) through the cooperation between the second pin holes (63) and the second pins (27); when the carrier plate (6) is placed on the lifting seat (25), the rotary pressing cylinder (26) is used to press the carrier plate (6).

8. The large synchronous motor assembly machine according to claim 3, characterized in that: The rotor translation mechanism (3) comprises a third slide rail (33), a third screw rod (36), a third bearing seat, a third motor, a third synchronous belt (34), a third moving plate (32), a third connecting plate (35) and a rotor translation seat (31); The third slide rail (33) is parallel to the horizontal slide rail (10) and fixed in the rotor loading area of ​​the workbench (9), and a third slider is provided on the third slide rail (33); the third screw rod (36) is installed on the upper surface of the workbench (9) close to the third slide rail (33) through the third bearing seat, and the third screw rod (36) is parallel to the third slide rail (33), and a third screw rod nut is sleeved on the third screw rod (36); the third motor is fixed in the workbench (9), and the main shaft of the third motor and the end of the third screw rod (36) are both installed with a third synchronous wheel, the third synchronous belt (34) is wound around the third synchronous wheel, and the third motor drives the third screw rod (36) through the third synchronous belt (34); a third avoidance opening is opened on the upper surface of the workbench (9) at a position corresponding to the third synchronous belt (34); The third movable plate (32) is mounted on the horizontal slide rail (10) via a slider, and the third connecting plate (35) is respectively connected to the third movable plate (32), the third screw nut and the third slider; the rotor translation seat (31) is fixed on the third movable plate (32).

9. The large synchronous motor assembly machine according to claim 8, characterized in that: The rotor lifting mechanism (4) comprises a lifting bracket (41), a plurality of fourth slide rails (43) and a plurality of lifting cylinders (42); the plurality of fourth slide rails (43) are vertically fixed in the rotor translation seat (31), each of the fourth slide rails (43) is provided with a fourth slide block, and the outer wall of the lifting bracket (41) is connected to the fourth slide block; the plurality of lifting cylinders (42) are vertically fixed to the rotor translation seat (31), a connector is fixed on the outer wall of the lifting bracket (41) at a position corresponding to the lifting cylinder (42), and the piston rod of the lifting cylinder (42) is connected to the connector; The rotor placement frame (7) is fixed in the lifting bracket (41), and a rotor positioning ring is fixed on the rotor placement frame (7).

10. The large synchronous motor assembly machine according to claim 3, characterized in that: The upper center device (5) comprises an upper center (51), a center mounting seat (56), a base (52), a support plate (53), a second movable plate (57), a fourth movable plate (58), a fifth slide rail, a sixth slide rail, a first tightening cylinder, a second tightening cylinder (510), a first screw positioning block, a second screw positioning block, a first adjustment block (54), a second adjustment block (59), a first tightening screw and a second tightening screw (511); The fifth slide rail is fixed on the upper surface of the workbench (9) at a position close to the first opening, the fifth slide rail is perpendicular to the horizontal slide rail (10) on a horizontal plane, a fifth slide block is provided on the fifth slide rail, and the base (52) is fixed on the fifth slide block; the first tightening cylinder is arranged adjacent to the first screw positioning block, and the first tightening cylinder and the first screw positioning block are both fixed on the upper surface of the workbench (9) at a position close to one side of the base (52); the first adjustment block (54) is fixed on one side of the base (52), one end of the first adjustment block (54) extends out of the base (52) and extends between the first tightening cylinder and the first screw positioning block; the piston rod of the first tightening cylinder is parallel to the fifth slide rail and the end of the piston rod of the first tightening cylinder presses against one side of the first adjustment block (54), the axis of the first tightening screw is parallel to the fifth slide rail, the first tightening screw is screwed into and passes through the first screw positioning block, and the end of the first tightening screw presses against the other side of the first adjustment block (54); The support plate (53) is vertically fixed on the base (52); a sixth slide rail and an upper center driving cylinder (55) are fixed on the support plate (53); a sixth slide rail is provided with a sixth slider; the second movable plate (57) is fixed on the sixth slider; and a piston rod of the upper center driving cylinder (55) is connected to the second movable plate (57) via a floating joint; The sixth slide rail is fixed on the second movable plate (57) and is parallel to the horizontal slide rail (10); a sixth slide block is provided on the sixth slide rail; the fourth movable plate (58) is fixed on the sixth slide block; the second tightening cylinder (510) is arranged adjacent to the second screw positioning block, and the second tightening cylinder (510) and the second screw positioning block are both fixed on the second movable plate (57) at a position close to one side of the fourth movable plate (58); the second adjustment block (59) is fixed on one side of the fourth movable plate (58); the second adjustment block (59) is fixed on one side of the fourth movable plate (58); the second tightening cylinder (510) is arranged adjacent to the second screw positioning block; the second tightening cylinder (510) and the second screw positioning block are both fixed on the second movable plate (57) at a position close to one side of the fourth movable plate (58); the second adjustment block (59) is fixed on one side of the fourth movable plate (58); the second adjustment block (59) is fixed on the second movable plate (58); the second tightening cylinder (510) and the second screw positioning block are fixed on the second movable plate (57 ... 9) one end extends out of the fourth movable plate (58) and extends between the second tightening cylinder (510) and the second screw positioning block; the piston rod of the second tightening cylinder (510) is parallel to the sixth slide rail and the end of the piston rod of the second tightening cylinder (510) is against one side of the second adjustment block (59), the axis of the second tightening screw (511) is parallel to the sixth slide rail, the second tightening screw (511) is screwed into and passes through the second screw positioning block, and the end of the second tightening screw (511) is against the other side of the second adjustment block (59); The top point mounting seat (56) is fixed on the fourth movable plate (58), and the upper top point (51) is vertically mounted on the top point mounting seat (56).

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