CN110695679A - Large-scale compensation type shaft connection assembly device - Google Patents

Abstract

The invention belongs to the field of metallurgical equipment, and in particular relates to a large-scale compensation type shaft connection and assembly device, comprising a workbench, a mobile bearing platform and a lift bearing platform. The mobile bearing platform is arranged on the workbench and moves along linear guide rails on the workbench. The moving bearing platform includes a bearing portion, the bearing portion is generally in the shape of a groove with an upward opening, and is used for bearing the sliding key connection shaft. The lifting bearing platform is arranged on the worktable and is located in the extension direction of the linear guide rail, and includes bearing rollers, roller bearings and lifting devices. The roller table includes two bearing rollers arranged side by side, and the lifting device is arranged on the worktable to push the roller table support up and down. The invention reduces the difficulty of operation, simplifies the operation steps, and reduces the safety risk during the maintenance of the large-scale compensation type connecting shaft, and is an equipment maintenance device that is easy to operate and implement.

Description

Large-scale compensation type shaft connection assembly device

technical field

The invention belongs to the field of metallurgical equipment, and in particular relates to a large-scale compensation type shaft connecting and assembling device.

Background technique

In metallurgical production, many devices rely on the connecting shaft for torque transmission. With the increase in the specifications and models of metallurgical products, the size of the connecting shaft is also getting larger and larger. The length of itself varies with the operation of the field equipment within a certain range) is composed of the feather key side and the sleeve side. In the maintenance process of this type of shaft, the most tedious step is to connect the feather key side and the sleeve side. , The original maintenance method is to use the crane for hoisting connection. This connection method is easy to cause collision damage between the sliding key and the keyway, and the larger the size and weight of the connecting shaft, the more prone to assembly damage.

Therefore, it is necessary to provide an improved technical solution for the deficiencies of the above-mentioned prior art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a large-scale compensating shaft connecting and assembling device, so as to at least solve the problems of difficult operation and easy collision damage when connecting large compensating shafts.

In order to achieve the above object, the present invention provides the following technical solutions:

A large-scale compensation type shaft connection and assembly device, the assembly device includes a workbench, a mobile bearing platform and a lift bearing platform; specifically: the workbench has a supporting and bearing function, and a linear guide rail is arranged on the workbench; The mobile bearing platform is arranged on the workbench and moves along the linear guide rail. The mobile bearing platform includes a bearing portion, and the bearing portion is in the shape of a groove with an upward opening for bearing the sliding key shaft; the lifting and lowering The bearing platform is arranged on the worktable and is located in the extension direction of the linear guide rail. The lifting bearing platform includes a bearing roller table, a roller table support and a lifting device, and the bearing roller table is arranged on the roller table support. On the seat, it is used to carry the sleeve to connect the shaft. The bearing roller table includes two bearing rollers arranged side by side. The axial direction of the roller is parallel to the axial direction of the quill shaft.

In the above-mentioned large-scale compensating shaft connection and assembling device, as a preferred solution, the assembling device further comprises an auxiliary mechanical arm, and the auxiliary mechanical arm is arranged between the moving bearing platform and the lifting bearing platform, and is located above the workbench, the auxiliary robotic arm includes a fixed frame and guide rollers, two guide rollers are arranged, and the two guide rollers are arranged opposite to each other and are respectively arranged at both ends of the fixed frame, The distance between the inner edges of the two guide rollers is equal to the outer diameter of the feather-keyed shaft, and the two guide rollers are arranged symmetrically with respect to the vertical plane where the axis of the quill shaft is located.

In the above-mentioned large-scale compensating shaft connection and assembly device, as a preferred solution, the auxiliary manipulator further includes a working rod, a column is provided on the worktable, and the working rod is installed on the column, so The fixed frame is arranged at one end of the working rod, and the distance between one end of the working rod and the column can be adjusted, and the two guide rollers on the fixed frame are a fixed guide roller and a moving guide roller respectively. , the rotating shaft of the fixed guide roller is fixedly arranged at one end of the fixed frame, and the distance between the moving guide roller and the fixed guide roller can be adjusted.

In the above-mentioned large-scale compensating shaft connection and assembly device, as a preferred solution, the auxiliary manipulator further comprises a moving support and a working hydraulic cylinder of the manipulator, the moving guide roller is mounted on the moving support, and the moving guide roller is installed on the moving support. The fixed frame is provided with a guide long hole, the moving bracket moves horizontally along the guide long hole, the cylinder of the working hydraulic cylinder of the mechanical arm is arranged on the fixed frame, and the piston rod of the working hydraulic cylinder of the mechanical arm The end part is connected with the moving bracket, and the distance between the moving guide roller and the fixed guide roller is adjusted through the telescopic operation of the working hydraulic cylinder of the mechanical arm.

In the above-mentioned large-scale compensation type shaft connection and assembly device, as a preferred solution, a vertical lifting hydraulic cylinder is arranged on the vertical column, and the working rod is arranged at the end of the piston rod of the lifting hydraulic cylinder.

In the above-mentioned large-scale compensation type shaft connection and assembly device, as a preferred solution, a lead screw and a drive motor are further provided on the worktable, the drive motor drives the lead screw to rotate, and the lead screw is connected to the The linear guide rails are arranged in parallel, the lead screw is sleeved with a lead screw nut, the lead screw nut is fixed on the moving bearing platform, and the rotation of the lead screw drives the moving bearing platform to move along the linear guide rail; Preferably, two rows of support wheels are arranged on the moving bearing platform, and the two rows of the support wheels are respectively arranged corresponding to the two tracks of the linear guide rail.

In the above-mentioned large-scale compensation type shaft connection and assembly device, as a preferred solution, a first positioning plate is provided on the mobile bearing platform, the first positioning plate is arranged at one end of the bearing portion, and the first positioning plate is arranged on one end of the bearing portion. The upper surface of a positioning plate is located above the plane where the groove bottom of the bearing portion is located, and the flange end face of the sliding key-connected shaft abuts on the first positioning plate when the shaft is assembled.

In the above-mentioned large-scale compensating shaft connection and assembling device, as a preferred solution, the bearing portion includes a plurality of supporting blocks arranged at intervals, and the groove opening of the supporting block is upward; preferably, the groove of the supporting block is The inner wall is provided with a lining layer, and the surface hardness of the lining layer is lower than that of the feather keyed shaft.

In the above-mentioned large-scale compensation type shaft connection and assembly device, as a preferred solution, a guide rod and a positioning work ring are provided on the roller table support, a vertical guide hole is provided on the work table, and the The guide rod is installed in the guide hole and moves up and down along the guide hole. The positioning working ring is arranged on the lower surface of the roller table support. The inner diameter of the positioning working ring is related to the extension of the lifting device. The outer diameters of the ends correspond to each other, and the protruding end of the lifting device extends into the positioning working ring and abuts against the lower surface of the roller table support, and the guide rod is spaced from the positioning working ring.

In the above-mentioned large-scale compensation type shaft connection and assembly device, as a preferred solution, the lifting platform further includes a second positioning plate, and the second positioning plate is arranged on the roller table support, located in the At one end of the bearing roller table, when the shaft is connected to the shaft, the flange end face of the sleeve connecting the shaft abuts on the second positioning plate; preferably, the lifting platform further includes a third positioning plate, the first Three positioning plates are arranged on the roller table support, located between the second positioning plate and the bearing roller table, and the distance between the third positioning plate and the second positioning plate is greater than or equal to the distance between the third positioning plate and the second positioning plate. The thickness of the flange plate of the sleeve to connect the shaft, the plane where the upper edge of the third positioning plate is located is located between the lower edge of the sleeve of the sleeve to connect the shaft and the lower edge of the flange of the sleeve to connect the shaft. between.

Compared with the closest prior art, the technical solution provided by the present invention has the following beneficial effects:

The large-scale compensation type shaft connection and assembly device provided by the present invention adopts a movable bearing platform and a lifting bearing platform to respectively carry the sliding key connecting shaft and the sleeve connecting shaft, and uses an auxiliary mechanical arm to position the sliding key connecting shaft to make it fit with the sleeve. The spigot shaft is coaxial in the horizontal direction, and the positioning is convenient and fast; the lifting device is used to drive the up and down movement of the lifting platform, so that the spigot shaft and the sliding key shaft are coaxial in the vertical direction. The positioning is simple and accurate; the moving platform is driven by the screw pair to move, and the drive is stable and reliable. It reduces the difficulty of operation, simplifies the operation steps, and reduces the safety risk during the maintenance of large-scale compensating shafts.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. in:

FIG. 1 is a schematic structural diagram of a large-scale compensation type shaft connecting and assembling device according to an embodiment of the present invention;

2 is a schematic structural diagram of a mobile carrying platform according to an embodiment of the present invention;

3 is a front view of a mobile carrying platform according to an embodiment of the present invention;

4 is a schematic structural diagram of a lifting platform according to an embodiment of the present invention;

5 is a rear view of the lifting platform according to the embodiment of the present invention;

6 is a bottom view of the lifting platform according to the embodiment of the present invention;

7 is a schematic structural diagram of an auxiliary robotic arm according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the use of a large-scale compensation type shaft connection and assembly device according to an embodiment of the present invention.

In the figure: 1. Workbench; 2. Mobile bearing platform; 3. Lifting bearing platform; 4. Linear guide rail; 5. Sliding key shaft; 6. Bearing roller table; 7. Roller bearing; 9. Sleeve shaft; 10. Working motor; 11. Support block; 12. Auxiliary mechanical arm; 13. Fixed frame; 14. Working rod; 15. Upright column; 16. Fixed guide roller; 17. Mobile guide roller; 18 , moving bracket; 19, working hydraulic cylinder of mechanical arm; 20, lifting hydraulic cylinder; 21, lead screw; 22, drive motor; 23, lead screw nut; 24, support wheel; 25, first positioning plate; 26, second positioning plate; 27, the third positioning plate; 28, the guide rod; 29, the positioning work ring.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", " The orientations or positional relationships indicated by "top" and "bottom" are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as Limitations of the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection; it may be directly connected or indirectly connected through intermediate components. For those skilled in the art, the specific meanings of the above terms can be understood according to specific situations.

According to an embodiment of the present invention, as shown in FIG. 1 to FIG. 8 , the present invention provides a large-scale compensating shaft connection and assembly device, the assembly device includes a workbench 1 , a moving bearing platform 2 and a lifting bearing platform 3 .

Specifically, the worktable 1 has a supporting and bearing function, and a linear guide rail 4 is provided on the worktable 1 . The mobile bearing platform 2 is arranged on the workbench 1 and moves along the linear guide rail 4. The mobile bearing platform 2 includes a bearing portion, and the bearing portion is in the shape of a groove with an upward opening to form a accommodating space, that is, a U shape, which is used to carry the sliding key shaft. 5. The lifting platform 3 is arranged on the workbench 1 and is located in the extending direction of the linear guide 4. The lifting platform 3 includes a bearing roller table 6, a roller table support 7 and a lifting device 8, and the bearing roller table 6 is arranged on the roller table support. 7, is used to carry the sleeve connecting shaft 9, the bearing roller table 6 includes two bearing rollers arranged side by side, the axial direction of the bearing rollers is parallel to the axial direction of the sleeve connecting shaft 9, and the lifting device 8 is arranged on the worktable 1. , used to push the roller table support 7 up and down. In this embodiment, a working motor 10 is provided on the roller table support 7, and the working motor 10 is connected with the rotating shaft of one of the bearing rollers to drive the bearing roller to rotate.

When in use, move the mobile bearing platform 2 to the vicinity of the left end of the workbench 1, hang the sliding key shaft 5 on the mobile bearing platform 2, and hang the sleeve shaft 9 on the bearing roller table of the lifting bearing platform 3 6, slowly move the mobile bearing platform 2, when the right end of the sliding key connecting shaft 5 is close to the left end of the sleeve connecting shaft 9, stop the moving bearing platform 2, and adjust the lifting device 8 to make the sleeve connecting shaft 9 and the sliding key connecting shaft 9 The axis of 5 is on the same horizontal plane, then turn the sliding key shaft 5 to make it correspond to the interface of the quill shaft 9 (that is, the axis of the feather key shaft 5 coincides with the axis of the quill shaft 9), and then slowly rotate The bearing roller drives the sleeve connecting shaft 9 to rotate, so that the key groove in the sleeve connecting shaft 9 corresponds to the key of the sliding key connecting shaft 5, and finally makes the mobile bearing platform 2 move forward slowly, and the sliding key connecting shaft 5 and the sleeve The barrel connection shafts 9 are sleeved together to complete the connection and assembly process of the entire compensation shaft connection. The orientation words left and right here are relative to FIG. 1 .

Further, the bearing portion includes a plurality of supporting blocks 11 arranged at intervals, and the grooves of the supporting blocks 11 are opened upward, so that the supporting blocks 11 are U-shaped; Contact area, reduce the chance of bumping. In use, the number of the support blocks 11 can also be increased or decreased according to the length of the feather-keyed shaft 5 to be supported to achieve stable support for the feather-keyed shaft 5 . Preferably, the inner wall of the groove of the support block 11 is provided with a lining layer (not shown in the figure), so as to avoid collision with the feather keyed shaft 5 and damage to the feathered keyed shaft 5 . The hardness of the lining is lower than the hardness of the sliding key shaft 5, and it can be made of relatively soft metals such as aluminum and copper, or can also be made of non-metallic materials such as plastic, rubber, bakelite, etc., preferably rubber material, which can not only avoid bumping, but also It has anti-slip function.

Further, the assembling device also includes an auxiliary robot arm 12, which is arranged between the moving bearing platform 2 and the lifting bearing platform 3, and is located above the workbench 1, and the auxiliary robot arm 12 includes a fixed frame 13 and guide rollers, There are two guide rollers. The two guide rollers are opposite to each other, and are respectively arranged at both ends of the fixed frame 13. The distance between the inner edges of the two guide rollers is equal to the outer diameter of the sliding key shaft 5. The two guide rollers are opposite to each other. It is symmetrically arranged on the vertical plane where the axis of the socket shaft 9 is located. Two guide rollers are used to constrain the sliding key connecting shaft 5 so that its axis and the axis of the sleeve connecting shaft 9 are located in the same vertical plane, which is more accurate and labor-saving than manual dialing. It also avoids accidental squeezing of fingers during manual manipulation.

Further, the auxiliary robotic arm 12 further includes a working rod 14, a column 15 is arranged on the working table 1, the column 15 is arranged on the side of the middle position of the working table 1, the working rod 14 is installed on the column 15, and the fixed frame 13 is arranged on the working rod At one end of 14, the distance between one end of the working rod 14 and the column 15 can be adjusted. Specifically, the working rod 14 is provided with a strip hole, and the working rod 14 is fixed on the column 15 through the strip hole. Adjust the position of the upright column 15 relative to the bar-shaped hole as required to realize the adjustment of the distance between one end of the working rod 14 and the upright column 15 . The two guide rollers on the fixed frame 13 are the fixed guide roller 16 and the moving guide roller 17 respectively. The rotating shaft of the fixed guide roller 16 is fixedly arranged at one end of the fixed frame 13, and the distance between the moving guide roller 17 and the fixed guide roller 16 You can adjust.

Further, the auxiliary robot arm 12 also includes a moving bracket 18 and a working hydraulic cylinder 19 for the robot arm. The moving guide roller 17 is installed on the moving bracket 18, and the fixed frame 13 is provided with a guiding long hole, and the moving bracket 18 moves horizontally along the guiding long hole. , the cylinder body of the working hydraulic cylinder 19 of the robotic arm is arranged on the fixed frame 13, the end of the piston rod of the working hydraulic cylinder 19 of the robotic arm is connected with the moving bracket 18, and the moving guide roller 17 and the fixed moving guide roller 17 are adjusted by the telescopic adjustment of the working hydraulic cylinder 19 of the robotic arm. The distance between the guide rollers 16 . When in use, first adjust the position of the working rod 14 so that the guide side of the fixed guide roller 16 (that is, the side where the fixed guide roller 16 will be in contact with the feather key shaft 5 ) is located on the vertical plane of the corresponding side edge of the sleeve shaft 9 Then move the moving bearing platform 2 to the right end of the sliding key shaft 5 and close to the left end of the sleeve shaft 9, start the working hydraulic cylinder 19 of the mechanical arm to shrink, so that the moving guide roller 17 is moved closer to the fixed guide roller 16, and the sliding The keyed shaft 5 is fixed and clamped, so far, the axes of the feather keyed shaft 5 and the sleeve shaft 9 are located in the same vertical plane.

Further, a vertical lifting hydraulic cylinder 20 is arranged on the upright column 15 , and the working rod 14 is arranged at the end of the piston rod of the lifting hydraulic cylinder 20 . In use, the height of the working rod 14 can be adjusted according to the outer diameter of the sliding key shaft 5 , so that the two guide rollers can be clamped at appropriate positions on both sides of the sliding key shaft 5 .

Further, the worktable 1 is also provided with a lead screw 21 and a drive motor 22. The drive motor 22 drives the lead screw 21 to rotate. The lead screw 21 is arranged in parallel with the linear guide 4. The lead screw 21 is sleeved with a lead screw nut 23. The screw nut 23 is fixed on the movable bearing platform 2, and the rotation of the lead screw 21 drives the movable bearing platform 2 to move along the linear guide rail 4; Movement is smoother.

Preferably, two rows of support wheels 24 are provided on the mobile bearing platform 2, and the two rows of support wheels 24 are respectively arranged corresponding to the two tracks of the linear guide rail 4. The support wheels 24 can be made of steel to enhance the bearing capacity. The rows of support wheels 24 are arranged corresponding to the rails, which can minimize the frictional force during movement while ensuring the bearing capacity.

Further, a first positioning plate 25 is arranged on the mobile bearing platform 2, the first positioning plate 25 is arranged at one end of the bearing portion, the upper surface of the first positioning plate 25 is located above the plane where the groove bottom of the bearing portion is located, and is assembled by connecting the shaft. The flange end face of the sliding key shaft 5 abuts on the first positioning plate 25 .

Further, the lifting platform 3 also includes a second positioning plate 26, the second positioning plate 26 is arranged on the roller table support 7, is located at one end of the bearing roller table 6, and is connected to the flange of the shaft 9 when the shaft is assembled. The end face abuts on the second positioning plate 26;

Preferably, the lifting platform 3 further includes a third positioning plate 27 , the third positioning plate 27 is arranged on the roller table support 7 and is located between the second positioning plate 26 and the bearing roller table 6 , and the third positioning plate 27 is connected to the first positioning plate 27 . The distance between the two positioning plates 26 is greater than or equal to the thickness of the flange of the spigot shaft 9, and the plane where the upper edge of the third locating plate 27 is located is located between the lower edge of the sleeve of the spigot shaft 9 and the sleeve Between the lower edges of the flanges of the shaft 9. In other words, the distance between the third positioning plate 27 and the axis of the quill 9 on the bearing roller table 6 is greater than the outer radius of the quill 9 and smaller than the radius of the flange of the quill 9 .

The setting of the first positioning plate 25 and the second positioning plate 26 can prevent the sliding key connecting shaft 5 or the sleeve connecting shaft 9 and the bearing platform from slipping and affecting the assembly when the shaft is assembled. The third positioning plate 27 and the second positioning plate The combined use of the plate 26 can prevent the assembled connecting shaft from being lifted away from the bearing roller table 6 during the extraction process of the moving bearing platform 2 and slipping off and hurting people.

Further, a guide rod 28 and a positioning working ring 29 are provided on the roller table support 7, and a vertical guide hole is set on the worktable 1. The guide rod 28 is installed in the guide hole and moves up and down along the guide hole to locate the working ring. 29 is arranged on the lower surface of the roller table support 7, the inner diameter of the positioning working ring 29 corresponds to the outer diameter of the extension end of the lifting device 8, the extension end of the lifting device 8 extends into the positioning working ring 29, and abuts against the On the lower surface of the roller table support 7 , the guide rod 28 and the positioning work ring 29 are spaced apart. Preferably, the lifting device 8 is a jack such as a screw jack.

When the large compensating shaft connecting and assembling device of the present invention is in operation, the sliding key connecting shaft 5 is suspended on the moving bearing platform 2, the sleeve connecting shaft 9 is placed on the bearing roller table 6 on the lifting bearing platform 3, and the two connecting shafts are When the shaft is connected, the auxiliary manipulator 12 is used to position the sliding key shaft 5 so that it is coaxial with the sleeve shaft 9 in the horizontal direction. The connecting shaft 5 and the sleeve connecting shaft 9) are coaxial in the vertical direction, and finally the keyway in the sleeve connecting shaft 9 and the sliding key on the sliding key connecting shaft 5 are rotated by the bearing roller 6 on the lifting platform 3. Align, and then drive the moving bearing platform 2 to move through the lead screw 21 to connect the compensating shafts to complete the assembly of the compensating shafts.

To sum up, in the large-scale compensation type shaft connection and assembly device provided by the present invention, the sliding key connection shaft and the sleeve connection shaft are respectively carried by the movable bearing platform and the lifting bearing platform, and the sliding key connection shaft is positioned by the auxiliary mechanical arm. , so that it is coaxial with the sleeve connecting shaft in the horizontal direction, and the positioning is convenient and fast; the lifting device is used to drive the up and down movement of the lifting platform, so that the sleeve connecting shaft and the sliding key connecting shaft are coaxial in the vertical direction. The positioning is simple and accurate; the moving platform is driven by the screw pair to move, and the drive is stable and reliable. It reduces the difficulty of operation, simplifies the operation steps, and reduces the safety risk during the maintenance of large-scale compensating shafts.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A large compensating spiale connecting assembly device, the assembly device comprising:

the workbench has a supporting and bearing effect, and a linear guide rail is arranged on the workbench;

the movable bearing platform is arranged on the workbench and moves along the linear guide rail, and comprises a bearing part which is in a groove shape with an upward opening and is used for bearing a sliding key connecting shaft;

the lifting bearing platform is arranged on the workbench and located in the extending direction of the linear guide rail, the lifting bearing platform comprises a bearing roller way, a roller way support and a lifting device, the bearing roller way is arranged on the roller way support and used for bearing a sleeve joint shaft, the bearing roller way comprises two bearing rollers which are arranged side by side, the lifting device is arranged on the workbench and used for pushing the roller way support to lift, and the axial direction of the bearing rollers is parallel to the axial direction of the sleeve joint shaft.

2. The large compensating type connecting shaft connecting and assembling device as claimed in claim 1, wherein the assembling device further comprises two auxiliary mechanical arms, the auxiliary mechanical arms are arranged between the movable bearing platform and the lifting bearing platform and above the workbench, each auxiliary mechanical arm comprises a fixed frame and two guide rollers, the two guide rollers are oppositely arranged and respectively arranged at two ends of the fixed frame, the distance between the inner side edges of the two guide rollers is equal to the outer diameter of the sliding key connecting shaft, and the two guide rollers are symmetrically arranged relative to a vertical plane where the axis of the sleeve connecting shaft is located.

3. The large compensating type spindle connecting and assembling device according to claim 2, wherein the auxiliary mechanical arm further comprises a working rod, a stand column is arranged on the working table, the working rod is mounted on the stand column, the fixed frame is arranged at one end of the working rod, the distance between one end of the working rod and the stand column is adjustable, the two guide rollers on the fixed frame are respectively a fixed guide roller and a movable guide roller, a rotating shaft of the fixed guide roller is fixedly arranged at one end of the fixed frame, and the distance between the movable guide roller and the fixed guide roller is adjustable.

4. The large compensating type spindle connecting and assembling device according to claim 3, wherein the auxiliary mechanical arm further comprises a moving bracket and a mechanical arm working hydraulic cylinder, the moving guide roller is mounted on the moving bracket, a guide long hole is formed in the fixed frame, the moving bracket horizontally moves along the guide long hole, a cylinder body of the mechanical arm working hydraulic cylinder is arranged on the fixed frame, the end of a piston rod of the mechanical arm working hydraulic cylinder is connected with the moving bracket, and the distance between the moving guide roller and the fixed guide roller is adjusted by the extension and contraction of the mechanical arm working hydraulic cylinder.

5. A large compensating type connecting and assembling device according to claim 4, characterized in that a vertical lifting hydraulic cylinder is arranged on the upright post, and the working rod is arranged at the end part of a piston rod of the lifting hydraulic cylinder.

6. The large compensating type spindle connecting and assembling device according to claim 1, wherein a lead screw and a driving motor are further arranged on the workbench, the driving motor drives the lead screw to rotate, the lead screw is arranged in parallel with the linear guide rail, a lead screw nut is sleeved on the lead screw, the lead screw nut is fixed on the movable bearing platform, and the lead screw rotates to drive the movable bearing platform to move along the linear guide rail;

preferably, two rows of support wheels are arranged on the movable bearing platform, and the two rows of support wheels are respectively arranged corresponding to the two tracks of the linear guide rail.

7. The large compensating type connecting and assembling device of claim 1, wherein a first positioning plate is disposed on the movable bearing platform, the first positioning plate is disposed at one end of the bearing portion, the upper surface of the first positioning plate is located above the plane where the groove bottom of the bearing portion is located, and the flange end surface of the sliding key connecting shaft abuts against the first positioning plate when the connecting shaft is assembled.

8. The large compensating spiale connecting assembly apparatus of claim 1 wherein the carrier comprises a plurality of spaced apart support blocks, the support blocks having slots opening upwardly;

preferably, the inner wall of the groove of the supporting block is provided with a lining layer, and the surface hardness of the lining layer is lower than that of the sliding key shaft.

9. The large compensating type connecting and assembling device of claim 1, wherein a guide rod and a positioning working ring are arranged on the roller way support, a vertical guide hole is formed in the workbench, the guide rod is installed in the guide hole and moves up and down along the guide hole, the positioning working ring is arranged on the lower surface of the roller way support, the inner diameter of the positioning working ring corresponds to the outer diameter of the extending end of the lifting device, the extending end of the lifting device extends into the positioning working ring and abuts against the lower surface of the roller way support, and the guide rod and the positioning working ring are arranged at intervals.

10. The large compensating type connecting shaft connecting and assembling device according to claim 1, wherein the lifting bearing table further comprises a second positioning plate, the second positioning plate is arranged on the roller way support and positioned at one end of the bearing roller way, and the flange end face of the sleeve connecting shaft abuts against the second positioning plate when the connecting shaft is assembled;

preferably, the lifting bearing table further comprises a third positioning plate, the third positioning plate is arranged on the roller way support and located between the second positioning plate and the bearing roller way, the distance between the third positioning plate and the second positioning plate is larger than or equal to the thickness of the flange plate of the sleeve connecting shaft, and the plane where the upper edge of the third positioning plate is located between the lower edge of the sleeve connecting shaft and the lower edge of the flange plate of the sleeve connecting shaft.

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