Intelligent tightening equipment for high-speed shaft expansion sleeve

Abstract

The invention relates to the field of mechanical assembly equipment, in particular to intelligent tightening equipment for a high-speed shaft expansion sleeve, which comprises a [-shaped frame, the lower part of the horizontal section of the upper side of the [-shaped frame is connected with a cantilever plate through a sliding rail mechanism, and the left side of the cantilever plate is connected with a variable-pitch axle box body with two symmetrically arranged tightening shafts through a moving mechanism; the clamping blocks are used for clamping a set of bolts arranged on the high-speed shaft expansion sleeve in a diagonal mode, so that the counter-acting force of the bolts on the clamping blocks drives the rotation center of the variable-pitch axle box body to move to the axis of the high-speed shaft expansion sleeve, and the high-speed shaft expansion sleeve is clamped through the positioning mechanism. And meanwhile, the clamping block can also position the center distance of the bolts arranged diagonally, and the tightening shaft on the variable-pitch axle box body can be quickly aligned to the coaxial line position of one group of bolts through the guide assembly, so that the assembly efficiency of the high-speed shaft expansion sleeve is improved.

Description

Technical Field

[0001] The invention relates to the field of mechanical assembly equipment, and in particular to a high-speed shaft expansion sleeve intelligent tightening device. Background Art

[0002] The high-speed shaft expansion sleeve is a mechanical device used to connect high-speed rotating shafts and other components. Tightening bolts are arranged at equal intervals along the circumference of the high-speed shaft expansion sleeve. When connecting, the inner sleeve and the outer sleeve of the expansion sleeve are caused to produce relative axial displacement by tightening the bolts. The inner sleeve will expand outwards and the outer sleeve will shrink inwards, thereby hugging the shaft and the matching components to achieve a keyless connection.

[0003] Appropriate tightening force can ensure good contact between the high-speed shaft expansion sleeve and the shaft and connecting parts, and maximize the characteristics of its friction force to transmit torque. Therefore, intelligent tightening equipment is generally used to tighten and assemble the high-speed shaft expansion sleeve. The existing intelligent tightening equipment generally includes a mobile frame, a track assembly, a variable pitch axle box and a control cabinet. The variable pitch axle box is movably connected to the mobile frame through the track assembly, and the variable pitch axle box is provided with two tightening shafts that can move synchronously in opposite directions.

[0004] When tightening the bolts of the high-speed shaft expansion sleeve by using the existing intelligent tightening equipment, the intelligent tightening equipment is manually moved to the work station, and then the corresponding sleeve is installed on the tightening shaft. The equipment is manually operated to move horizontally and lift and lower, so that the sleeve is connected to the first group of bolt caps of the high-speed shaft expansion sleeve, and then the first group of bolts is tightened by the intelligent tightening equipment, and then the variable pitch axle box is manually rotated, and the above process is repeated to tighten all the bolts.

[0005] However, when the existing intelligent tightening equipment is used to tighten the bolts of the high-speed shaft expansion sleeve, it is necessary to manually move the rotation center of the variable pitch axle box to the axis of the high-speed shaft expansion sleeve, and then manually adjust the distance between the two tightening shafts to the corresponding bolt position, so that the position of the variable pitch axle box cannot be quickly positioned, thereby reducing the assembly efficiency of the high-speed shaft expansion sleeve, and when the operator rotates the variable pitch axle box to change the group for tightening, it is difficult to accurately grasp the rotation angle of the variable pitch axle box, and it is necessary to repeatedly adjust the angle of the variable pitch axle box so that the tightening shaft corresponds to the bolt of the high-speed shaft expansion sleeve, further reducing the assembly efficiency of the high-speed shaft expansion sleeve. Summary of the invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-speed shaft expansion sleeve intelligent tightening equipment, including a V-shaped frame, the lower part of the upper horizontal section of the V-shaped frame is connected to a cantilever plate through a slide rail mechanism, and the left side of the cantilever plate is connected to a variable pitch axle box body with two symmetrically arranged tightening shafts through a moving mechanism, and a positioning mechanism for quickly aligning the variable pitch axle box body with the expansion sleeve is provided on the cantilever plate.

[0007] The moving mechanism includes a circular plate which is arranged on the left side of the cantilever plate for sliding left and right through a guide column. The left side of the circular plate is rotatably connected to the variable pitch axle box body. A locking plate is detachably arranged on the right side of the variable pitch axle box body. A plurality of slots are arranged on the outer surface of the locking plate at equal intervals along its circumference. An insert plate is arranged on the circular plate for sliding radially. A locking component is arranged on the cantilever plate for locking the left and right positions of the variable pitch axle box body.

[0008] The positioning mechanism includes a follower plate rotatably arranged on the right side of the cantilever plate, two symmetrically arranged mounting support plates are fixedly installed on the left side of the follower plate, a sliding plate frame is slidably arranged on the left side of the mounting support plate along the length direction of the follower plate, two symmetrically arranged clamping blocks are slidably arranged on one side of the sliding plate frame close to the middle of the variable pitch axle box body, a synchronization component is arranged on the follower plate for synchronously moving the two sliding plate frames in the opposite direction, and a guide component for the tightening shaft of the limited position variable pitch axle box body is arranged on the mounting support plate.

[0009] As a preferred technical solution of the present invention, the outer diameter of the locking disk is equal to the inner diameter of the annular plate, a push spring is arranged between the plug plate and the annular plate, and chamfers are arranged at two edge positions of the plug plate close to the center of the annular plate.

[0010] As a preferred technical solution of the present invention, a fastening screw is threadedly connected on the right side of the variable pitch axle box body and located at the axial position of the circular ring plate, and a disassembly groove is opened on the locking disk. The disassembly groove has a waist-shaped structure as a whole. One end of the disassembly groove is located on the axis of the locking disk and the inner diameter is equal to the outer diameter of the rod body of the fastening screw, and the other end of the disassembly groove is for the fastening screw to pass through.

[0011] As a preferred technical solution of the present invention, the locking assembly includes an L-shaped plate fixedly installed on the upper left side of the cantilever plate, a No. 1 hydraulic rod coaxially arranged with the circular ring plate is fixedly installed on the lower part of the vertical section of the L-shaped plate, the telescopic section of the No. 1 hydraulic rod is fixedly connected to the variable pitch axle box body, a No. 2 hydraulic rod is fixedly installed on the cantilever plate, the telescopic section of the No. 2 hydraulic rod is fixedly connected to the circular ring plate, and the cylinder body of the No. 1 hydraulic rod is connected to the cylinder body of the No. 2 hydraulic rod through a conduit.

[0012] As a preferred technical solution of the present invention, a valve ball is rotatably provided on the cylinder body of the No. 2 hydraulic rod corresponding to the position of the conduit, a T-shaped flow channel is opened on the valve ball, a piston plate is slidably provided on the right inner wall of the cylinder body of the No. 2 hydraulic rod, and a coil spring is provided between the piston plate and the cylinder body of the No. 2 hydraulic rod.

[0013] As a preferred technical solution of the present invention, the synchronization component includes a synchronization gear rotatably arranged in the middle of the right side of the follower plate, and a connecting plate is fixedly installed on the side of the two sliding plate frames away from each other, and a rack is fixedly installed on the side of the connecting plate close to the synchronization gear, and the two racks are meshed on both sides of the synchronization gear.

[0014] As a preferred technical solution of the present invention, the guide assembly includes a blocking plate that is slidably inserted into the mounting support plate along the length direction of the follower plate, and a semicircular groove is provided on one side of the blocking plate close to the middle of the variable pitch axle box body, and the inner diameter of the semicircular groove is equal to the outer diameter of the tightening shaft of the variable pitch axle box body.

[0015] As a preferred technical solution of the present invention, when the side of the blocking plate away from the middle of the variable pitch axle box body is flush with the side of the sliding plate frame away from the clamping block, the axis of the semicircular groove on the blocking plate is located in the middle position between the two clamping blocks at corresponding positions.

[0016] As a preferred technical solution of the present invention, two fixed blocks are fixedly installed on the right side of the blocking plate near the semicircular groove, and the two fixed blocks are arranged along the length of the blocking plate. The length of the fixed block close to the semicircular groove is greater than that of the other fixed block. A right-angled trapezoidal block is slidingly arranged on the mounting support plate along its length direction, and a support spring is arranged between the right-angled trapezoidal block and the mounting support plate.

[0017] As a preferred technical solution of the present invention, a bidirectional screw is rotatably arranged on the sliding plate frame, and the clamping block is threadedly connected to the bidirectional screw on one side away from the middle of the variable pitch axle box body, and the two clamping blocks on the same sliding plate frame are in a V-shaped structure on the side close to each other.

[0018] The beneficial effects of the present invention are as follows: 1. The present invention adopts a clamping block to clamp a group of diagonally arranged bolts on the high-speed shaft expansion sleeve, so that the reaction force of the bolts on the clamping block drives the variable pitch shaft box body to move to the corresponding position of the high-speed shaft expansion sleeve, so that the rotation center of the variable pitch shaft box body is located on the axis of the high-speed shaft expansion sleeve, and the clamping block can also locate the center distance of the diagonally arranged bolts, and the tightening shaft on the variable pitch shaft box body can be quickly aligned to the coaxial position of a group of bolts through the guide component, thereby increasing the assembly efficiency of the high-speed shaft expansion sleeve.

[0019] 2. The present invention adopts the correspondence between the slots on the locking disk and the positions of the bolts, so that the variable pitch axle box body drives the slots on the locking disk to rotate. When the plug plate is withdrawn from one slot and inserted into the inside of an adjacent slot, the variable pitch axle box body can drive the tightening shaft thereon to correspond to the next group of bolts, thereby accurately grasping the rotation angle of the variable pitch axle box body each time, further improving the assembly efficiency of the high-speed shaft expansion sleeve. In addition, by replacing the locking disk with different numbers of slots, it can adapt to high-speed shaft expansion sleeves with different numbers of bolts.

[0020] 3. The present invention uses the No. 1 hydraulic rod, the No. 2 hydraulic rod and the hydraulic resistance inside the conduit to limit the movement of the variable pitch axle box body, so that after the external force on the variable pitch axle box body is removed, the variable pitch axle box body can maintain its own position unchanged, thereby facilitating the rapid adjustment and locking of the position of the variable pitch axle box body, and when the sleeve on the tightening shaft is inserted into the outside of the bolt nut, the operator can make the right and left sides of the cylinder body of the No. 2 hydraulic rod conduct by turning the valve ball, and then the elastic force of the coil spring applies a leftward push to the variable pitch axle box body through the piston plate, thereby increasing the connection firmness between the sleeve and the bolt nut, so as to facilitate the stable tightening of the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the structure of the present invention after removing the yoke and the slide rail mechanism.

[0024] Figure 3 It is a cross-sectional view of the cantilever plate, the pitch-variable axle box body, the annular plate, the locking plate, the slot, the plug plate, the fastening screw, the disassembly groove and the second hydraulic rod in the present invention.

[0025] Figure 4 It is a cross-sectional view of the cantilever plate, the variable pitch axle box body and the locking assembly in the present invention.

[0026] Figure 5 It is a partial cross-sectional view of the variable pitch axle box body, the mounting support plate, the sliding plate frame, the clamping block, the blocking plate, the bidirectional screw and the connecting plate in the present invention.

[0027] Figure 6 It is a cross-sectional view of the mounting support plate and the guide assembly in the present invention.

[0028] In the figure: 1, L-shaped frame; 2, slide rail mechanism; 3, cantilever plate; 4, moving mechanism; 5, variable pitch axle box body; 6, positioning mechanism; 41, annular plate; 42, locking plate; 43, slot; 44, plug plate; 45, locking assembly; 46, fastening screw; 47, disassembly groove; 61, follower plate; 62, mounting support plate; 63, sliding plate frame; 64, clamping block; 65, synchronization assembly; 66, guide assembly; 451, L-shaped plate; 452, No. 1 hydraulic rod; 453, No. 2 hydraulic rod; 454, guide tube; 455, valve ball; 456, piston plate; 631, bidirectional screw; 651, synchronization gear; 652, connecting plate; 653, rack; 661, blocking plate; 663, fixing block; 664, right-angle trapezoidal block. DETAILED DESCRIPTION

[0029] Embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention. For those without specific technical or conditions noted in the embodiments, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0030] Refer to Figure 1 and Figure 2 , a high-speed shaft expansion sleeve intelligent tightening device, including a U-shaped frame 1. The lower part of the upper horizontal section of the U-shaped frame 1 is connected with a cantilever plate 3 through a slide rail mechanism 2. The left side of the cantilever plate 3 is connected with a variable pitch shaft box body 5 with two symmetrically arranged tightening shafts through a moving mechanism 4. A positioning mechanism 6 for quickly aligning the variable pitch shaft box body 5 with the expansion sleeve is arranged on the cantilever plate 3.

[0031] When it is necessary to tighten the bolts on the high-speed shaft expansion sleeve, first move the U-shaped frame 1 to the position of the high-speed shaft expansion sleeve. Then, clamp a set of diagonally arranged bolts on the high-speed shaft expansion sleeve through the positioning mechanism 6, so that the reaction force of the bolts on the positioning mechanism 6 drives the rotation center of the variable pitch shaft box body 5 to move to the axis of the high-speed shaft expansion sleeve. At the same time, the positioning mechanism 6 locates the center distance of the diagonally arranged bolts. Subsequently, lock the slide rail mechanism 2 to lock the position of the cantilever plate 3, so that the variable pitch shaft box body 5 rotates around the axis of the high-speed shaft expansion sleeve.

[0032] Subsequently, the operator quickly adjusts the center distance between the two tightening shafts on the variable pitch shaft box body 5 through the variable pitch shaft box body 5, and quickly aligns the two tightening shafts with the coaxial position of a set of bolts clamped by the positioning mechanism 6 through the positioning mechanism 6. Subsequently, the operator pushes the variable pitch shaft box body 5 to the left through the moving mechanism 4, so that the sleeve on the tightening shaft on the variable pitch shaft box body 5 is inserted outside the bolt head. Then, drive the tightening shaft to tighten the bolt through the variable pitch shaft box body 5. Then, the operator moves the variable pitch shaft box body 5 to the right and rotates it. Under the limitation of the moving mechanism 4, the variable pitch shaft box body 5 drives the tightening shaft to quickly align with the next set of diagonally arranged bolts.

[0033] In this embodiment, the slide rail mechanism 2 is composed of an existing C-shaped track, a track trolley and a balancer, which can realize the operator pushing the cantilever plate 3 to move back and forth and up and down. A universal wheel with a lockable position is installed on the lower side of the lower horizontal section of the U-shaped frame 1, so that the U-shaped frame 1 can be conveniently moved to the position of the high-speed shaft expansion sleeve.

[0034] Refer to Figure 2 and Figure 3The moving mechanism 4 includes a circular plate 41 which is set on the left side of the cantilever plate 3 through a guide column to slide left and right. The left side of the circular plate 41 is rotatably connected to the variable pitch axle box body 5. The right side of the variable pitch axle box body 5 is provided with a locking plate 42 in a detachable manner. The outer diameter of the locking plate 42 is equal to the inner diameter of the circular plate 41. A plurality of slots 43 are provided on the outer surface of the locking plate 42 at equal intervals along its circumference. A plug plate 44 is provided on the circular plate 41 to slide radially.

[0035] See also Figure 3 A fastening screw 46 is threadedly connected to the right side of the variable pitch axle box body 5 and located at the axial position of the circular ring plate 41. A disassembly groove 47 is opened on the locking plate 42. The disassembly groove 47 has a waist-shaped structure as a whole. One end of the disassembly groove 47 is located on the axis of the locking plate 42 and the inner diameter is equal to the outer diameter of the rod of the fastening screw 46. The other end of the disassembly groove 47 is for the fastening screw 46 to pass through.

[0036] Before tightening the bolts on the high-speed shaft expansion sleeve, the operator selects a locking plate 42 with an equal number of slots 43 according to the number of bolts in a circle on the high-speed shaft expansion sleeve. Then the operator makes the end of the disassembly slot 47 on the locking plate 42 away from its axis correspond to the position of the fastening screw 46, so that the fastening screw 46 passes through the disassembly slot 47. Then the operator moves the locking plate 42 to the coaxial position of the annular plate 41, and moves the locking plate 42 to the inner side of the annular plate 41. At this time, the fastening screw 46 is not locked, and the plug plate 44 is inserted into the inside of any slot 43 to lock the locking plate 42 and the annular plate 41 into a whole.

[0037] See also Figure 1 , Figure 2 and Figure 5 The positioning mechanism 6 includes a follower plate 61 rotatably arranged on the right side of the cantilever plate 3, two symmetrically arranged mounting support plates 62 are fixedly installed on the left side of the follower plate 61, a sliding plate frame 63 is slidably arranged along the length direction of the follower plate 61 on the left side of the mounting support plate 62, and two symmetrically arranged clamping blocks 64 are slidably arranged on one side of the sliding plate frame 63 close to the middle of the variable pitch axle box body 5, and a synchronization component 65 is arranged on the follower plate 61 for synchronously and reversely moving the two sliding plate frames 63.

[0038] See also Figure 2 The synchronization component 65 includes a synchronization gear 651 rotatably arranged in the middle of the right side of the follower plate 61, and a connecting plate 652 is fixedly installed on the side of the two sliding plate frames 63 away from each other, and a rack 653 is fixedly installed on the side of the connecting plate 652 close to the synchronization gear 651, and the two racks 653 are meshed on both sides of the synchronization gear 651.

[0039] Continue reading Figure 2A bidirectional screw 631 is rotatably provided on the sliding plate frame 63, and the side of the clamping block 64 away from the middle of the variable pitch axle box body 5 is threadedly connected to the bidirectional screw 631, and the two clamping blocks 64 on the same sliding plate frame 63 are close to each other on the side forming a V-shaped structure.

[0040] When it is necessary to tighten the bolts on the high-speed shaft expansion sleeve, the operator manually pulls the sliding plate frame 63 to the position of one of the two bolts arranged diagonally, so that the two clamping blocks 64 on the same sliding plate frame 63 are located on both sides of the bolt, and then manually rotates the bidirectional screw 631 at the corresponding position, so that the bidirectional screw 631 drives the two clamping blocks 64 at the corresponding position to move synchronously in the opposite direction, so that the V-shaped structure on the clamping block 64 is clamped against the outer surface of the bolt, and then the bolt is located in the middle position between the two clamping blocks 64 on the same sliding plate frame 63.

[0041] Similarly, the operator then pulls and operates the two clamping blocks 64 on the other sliding plate frame 63 to clamp the outer side surface of another bolt in a group of two diagonally arranged bolts. When the front sliding plate frame 63 moves, it drives the rack 653 at the corresponding position to move synchronously through the front connecting plate 652. The rack 653 drives the synchronous gear 651 to rotate, and the synchronous gear 651 drives the other rack 653 to move synchronously in the opposite direction. The other rack 653 drives the rear sliding plate frame 63 to move synchronously through the rear connecting plate 652, so that the two sliding plate frames 63 move synchronously in the opposite direction.

[0042] Thereby, the synchronous gear 651 drives the annular plate 41 through the follower plate 61 and the cantilever plate 3 to always be located in the center position between the two sliding plate frames 63. Therefore, when the two sliding plate frames 63 are connected together with the same group of two diagonally arranged bolts through the clamping block 64, the annular plate 41 moves to the coaxial line position of the high-speed shaft expansion sleeve, and then the position of the cantilever plate 3 is locked by the slide rail mechanism 2.

[0043] See also Figure 5 The positioning mechanism 6 also includes a guide assembly 66 arranged on the mounting support plate 62, and the guide assembly 66 includes a blocking plate 661 that is slidably inserted on the mounting support plate 62 along the length direction of the follower plate 61. A semicircular groove is opened on one side of the blocking plate 661 close to the middle of the variable pitch axle box body 5, and the inner diameter of the semicircular groove is equal to the outer diameter of the tightening shaft of the variable pitch axle box body 5.

[0044] Continue reading Figure 5 When the side of the blocking plate 661 away from the middle of the pitch change axle box body 5 is flush with the side of the sliding plate frame 63 away from the clamping block 64, the axis of the semicircular groove on the blocking plate 661 is located in the middle position between the two clamping blocks 64 at the corresponding positions.

[0045] See also Figure 5 and Figure 6 Two fixed blocks 663 are fixedly installed on the right side of the blocking plate 661 near the semicircular groove. The two fixed blocks 663 are arranged along the length of the blocking plate 661. The length of the fixed block 663 close to the semicircular groove is greater than the other fixed block 663. A right-angled trapezoidal block 664 is slidably provided on the mounting support plate 62 along its length direction, and a supporting spring is provided between the right-angled trapezoidal block 664 and the mounting support plate 62.

[0046] When the clamping block 64 is clamped on the outer side of the bolt, the operator drives the two tightening shafts thereon to move away from each other synchronously by operating the variable pitch axle box body 5. At the same time, the operator manually rotates the variable pitch axle box body 5, so that the variable pitch axle box body 5 drives the two tightening shafts thereon to correspond to the position of the blocking plate 661, so that the tightening shafts move to the coaxial position inside the semicircular groove corresponding to the blocking plate 661.

[0047] Then, the tightening shaft pushes the blocking plate 661 at the corresponding position to continue moving, so that the side of the blocking plate 661 away from the middle of the variable pitch axle box body 5 abuts against the connecting plate 652, so that the side of the blocking plate 661 away from the middle of the variable pitch axle box body 5 is flush with the side of the sliding plate frame 63 away from the clamping block 64, and the axis of the semicircular groove on the blocking plate 661 is located in the middle position between the two clamping blocks 64 at the corresponding position, so that the tightening shaft corresponds to the coaxial position of the bolt.

[0048] Then, the fastening screw 46 is manually rotated to fix the locking plate 42 on the variable pitch axle box body 5, so that the variable pitch axle box body 5 and the locking plate 42 are connected as a whole, that is, the variable pitch axle box body 5 and the locking plate 42 rotate synchronously, and at the same time, the variable pitch axle box body 5 and the annular plate 41 are temporarily locked into a whole, so that the rotation angle of the variable pitch axle box body 5 is fixed.

[0049] The operator then reverses the bidirectional screw 631 so that the clamping block 64 no longer clamps the bolt, and then the operator manually pulls the two blocking plates 661 away from each other. The blocking plate 661 drives the sliding plate frame 63 to move synchronously by pushing the connecting plate 652, so that the blocking plate 661 drives the fixed block 663 on the side away from the semicircular groove to contact the inclined surface of the right-angled trapezoidal block 664, thereby causing the fixed block 663 to push the right-angled trapezoidal block 664 to the right and compress the spring.

[0050] When the blocking plate 661 drives the position between the two fixed blocks 663 on it to correspond to the right-angled trapezoidal block 664, the supporting spring pushes the right-angled trapezoidal block 664 to move between the two fixed blocks 663 through its own elastic force, so that the long side of the right-angled trapezoidal block 664 fits with the fixed block 663 on the blocking plate 661 away from the semicircular groove, and the short side of the right-angled trapezoidal block 664 fits with the fixed block 663 on the blocking plate 661 close to the semicircular groove, thereby locking the blocking plate 661 and the mounting support plate 62 into a whole, thereby preventing the clamping block 64 from blocking the tightening movement of the bolt.

[0051] See also Figure 2 , Figure 3 and Figure 4 The moving mechanism 4 also includes a locking assembly 45 arranged on the cantilever plate 3, and the locking assembly 45 includes an L-shaped plate 451 fixedly installed on the upper left part of the cantilever plate 3, and a No. 1 hydraulic rod 452 coaxially arranged with the circular ring plate 41 is fixedly installed at the lower part of the vertical section of the L-shaped plate 451, and the telescopic section of the No. 1 hydraulic rod 452 is fixedly connected to the variable pitch axle box body 5, and a No. 2 hydraulic rod 453 is fixedly installed on the cantilever plate 3, and the telescopic section of the No. 2 hydraulic rod 453 is fixedly connected to the circular ring plate 41, and the cylinder body of the No. 1 hydraulic rod 452 is connected to the cylinder body of the No. 2 hydraulic rod 453 through a conduit 454.

[0052] See also Figure 2 and Figure 4 A valve ball 455 is rotatably provided on the cylinder body of the second hydraulic rod 453 corresponding to the position of the conduit 454, and a T-shaped flow channel is opened on the valve ball 455. A piston plate 456 is slidably provided on the right inner wall of the cylinder body of the second hydraulic rod 453, and a coil spring is provided between the piston plate 456 and the cylinder body of the second hydraulic rod 453.

[0053] In the initial state, the telescopic section of the No. 1 hydraulic rod 452 is in an extended state, and the telescopic section of the No. 2 hydraulic rod 453 is in a retracted state. The T-shaped flow channel on the valve ball 455 connects the left side of the cylinder body of the No. 2 hydraulic rod 453 with the conduit 454. After the blocking plate 661 and the mounting support plate 62 are locked into a whole, the operator manually pushes the variable pitch axle box body 5 to the left, so that the variable pitch axle box body 5 drives the sleeve on the tightening shaft to connect with the bolt nut.

[0054] During the movement of the variable pitch axle box body 5 to the left, the variable pitch axle box body 5 drives the annular plate 41 to move synchronously. At the same time, the variable pitch axle box body 5 pushes the telescopic section of the No. 1 hydraulic rod 452, so that the hydraulic oil inside the No. 1 hydraulic rod 452 moves to the left side of the cylinder body of the No. 2 hydraulic rod 453 through the conduit 454, so that the telescopic section of the No. 2 hydraulic rod 453 moves out synchronously with the annular plate 41, and then after the external force on the variable pitch axle box body 5 is removed, the position of the variable pitch axle box body 5 is limited by the resistance of the No. 1 hydraulic rod 452, the No. 2 hydraulic rod 453 and the hydraulic oil inside the conduit 454.

[0055] When the variable pitch axle box body 5 drives the sleeve on the tightening shaft to connect with the bolt nut, the operator turns the valve ball 455 so that the T-shaped flow channel on the valve ball 455 cuts off the connection between the left side of the cylinder body of the No. 2 hydraulic rod 453 and the conduit 454, and then connects the left side of the cylinder body of the No. 2 hydraulic rod 453 with the right side of its cylinder body, so that the elastic force of the coil spring applies a leftward thrust to the telescopic section of the No. 2 hydraulic rod 453 through the piston plate 456, and then the No. 2 hydraulic rod 453 applies a leftward push to the variable pitch axle box body 5 through the annular plate 41, thereby increasing the connection firmness between the sleeve and the bolt nut, so as to facilitate the stable tightening of the bolt.

[0056] Afterwards, the variable pitch axle box body 5 is started to drive the tightening shaft to rotate, so that the tightening shaft can synchronously tighten a group of diagonally arranged bolts. After tightening a group of diagonally arranged bolts, the valve ball 455 is reversed and reset, and then the operator moves the variable pitch axle box body 5 to the right, so that the tightening shaft is out of contact with the bolts.

[0057] See also Figure 2 and Figure 3 A push spring is provided between the insert plate 44 and the annular plate 41 , and chamfers are provided at two edge positions of the insert plate 44 close to the center of the annular plate 41 .

[0058] When the tightening shaft is out of contact with the bolt, the operator manually pulls the plug plate 44 to move the plug plate 44 out from the inside of the slot 43, and then the operator manually rotates the variable pitch axle box body 5 to drive the locking plate 42 to rotate synchronously. When the locking plate 42 starts to rotate, the external force on the plug plate 44 is removed, so that the push spring pushes the plug plate 44 against the outer surface of the locking plate 42 through its own elastic force.

[0059] When the variable pitch axle box body 5 drives the locking plate 42 to rotate to the angle of a slot 43, the push spring pushes the plug plate 44 to be inserted into the slot 43 at the corresponding position again through its own elastic force. At this time, the variable pitch axle box body 5 drives the tightening shaft to rotate to the coaxial position of the next group of diagonally arranged bolts, and then the variable pitch axle box body 5 is moved again to tighten the bolts. The plug plate 44 can be more easily inserted into the slot 43 due to the chamfer set on it, preventing the plug plate 44 from crossing the slot 43.

[0060] See also Figure 1-Figure 6 When tightening the bolts on the high-speed shaft expansion sleeve, the present invention also includes the following steps: the first step is to move the yoke 1 to the position of the high-speed shaft expansion sleeve, and the operator selects the locking disk 42 with an equal number of slots 43 according to the number of bolts in a circle on the high-speed shaft expansion sleeve in advance, and then moves the locking disk 42 to the inner side of the circular ring plate 41, so that the plug plate 44 is inserted into the inside of any slot 43, and the locking disk 42 and the circular ring plate 41 are locked into a whole.

[0061] In the second step, the operator manually pulls the clamping block 64 and clamps it on the bolt, so that the annular plate 41 moves to the coaxial position of the high-speed shaft expansion sleeve, and then locks the position of the cantilever plate 3 through the slide rail mechanism 2.

[0062] In the third step, the operator drives the tightening shaft to push the blocking plate 661 against the connecting plate 652 by operating the variable pitch axle box body 5, so that the tightening shaft corresponds to the coaxial line position of the bolt.

[0063] The fourth step is to manually rotate the fastening screw 46 to fix the locking plate 42 on the variable pitch axle box body 5, and then the operator manually pulls the two blocking plates 661 away from each other to prevent the clamping block 64 from blocking the tightening movement of the bolt.

[0064] In the fifth step, the operator manually pushes the variable pitch axle box body 5 to the left, so that the variable pitch axle box body 5 drives the sleeve on the tightening shaft to connect with the bolt nut. The operator rotates the valve ball 455 so that the elastic force of the coil spring pushes the variable pitch axle box body 5 to the left through the piston plate 456, thereby increasing the connection firmness between the sleeve and the bolt nut, so as to stably tighten the bolt.

[0065] The sixth step is to start the variable pitch axle box body 5 to drive the tightening shaft to rotate, so that the tightening shaft can synchronously tighten a group of diagonally arranged bolts. After tightening a group of diagonally arranged bolts, the valve ball 455 is reversed and reset. Then the operator moves the variable pitch axle box body 5 to the right, so that the tightening shaft is out of contact with the bolts.

[0066] In the seventh step, the operator manually pulls the plug plate 44 out of the slot 43, and then manually rotates the variable pitch axle box body 5, so that the push spring pushes the plug plate 44 to be inserted into the slot 43 at the corresponding position again through its own elastic force, and then moves the variable pitch axle box body 5 again to tighten the bolts, repeating steps 6 to 7 to tighten all the bolts.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A high-speed shaft expansion sleeve intelligent tightening device, comprising a shaped frame (1), the lower part of the upper horizontal section of the shaped frame (1) is connected to a cantilever plate (3) through a slide rail mechanism (2), characterized in that: The left side of the cantilever plate (3) is connected to a variable pitch axle box body (5) with two symmetrically arranged tightening shafts via a moving mechanism (4), and a positioning mechanism (6) for quickly aligning the variable pitch axle box body (5) with the expansion sleeve is provided on the cantilever plate (3); The moving mechanism (4) comprises a circular plate (41) which is arranged on the left side of the cantilever plate (3) so as to slide left and right through a guide column, the left side of the circular plate (41) is rotatably connected to the variable pitch axle box body (5), the right side of the variable pitch axle box body (5) is provided with a locking plate (42) in a detachable manner, a plurality of slots (43) are provided on the outer surface of the locking plate (42) at equal intervals along its circumferential direction, a plug plate (44) is provided on the circular plate (41) so as to slide along its radial direction, and a locking assembly (45) for locking the left and right positions of the variable pitch axle box body (5) is provided on the cantilever plate (3); The positioning mechanism (6) comprises a follower plate (61) rotatably arranged on the right side of the cantilever plate (3); two symmetrically arranged mounting support plates (62) are fixedly installed on the left side of the follower plate (61); a sliding plate frame (63) is slidably arranged on the left side of the mounting support plate (62) along the length direction of the follower plate (61); two symmetrically arranged clamping blocks (64) are slidably arranged on one side of the sliding plate frame (63) close to the middle of the variable pitch axle box body (5); a synchronizing component (65) is arranged on the follower plate (61) for synchronously moving the two sliding plate frames (63) in the opposite direction; and a guide component (66) for tightening the limited position of the variable pitch axle box body (5) is arranged on the mounting support plate (62).

2. According to claim 1, a high-speed shaft expansion sleeve intelligent tightening device is characterized in that: The outer diameter of the locking plate (42) is equal to the inner diameter of the circular plate (41), a push spring is arranged between the plug plate (44) and the circular plate (41), and chamfers are arranged at two edge positions of the plug plate (44) close to the center of the circular plate (41).

3. The high-speed shaft expansion sleeve intelligent tightening device according to claim 1 is characterized in that: A fastening screw (46) is threadedly connected to the right side of the variable pitch axle box body (5) and located at the axial position of the annular plate (41); a disassembly groove (47) is provided on the locking plate (42); the disassembly groove (47) is in a waist-shaped structure as a whole; one end of the disassembly groove (47) is located on the axis of the locking plate (42) and has an inner diameter equal to the outer diameter of the fastening screw (46); and the other end of the disassembly groove (47) is for the fastening screw (46) to pass through.

4. The high-speed shaft expansion sleeve intelligent tightening device according to claim 1 is characterized in that: The locking assembly (45) comprises an L-shaped plate (451) fixedly mounted on the upper left side of the cantilever plate (3); a first hydraulic rod (452) coaxially arranged with the circular ring plate (41) is fixedly mounted on the lower part of the vertical section of the L-shaped plate (451); a telescopic section of the first hydraulic rod (452) is fixedly connected to the variable pitch axle box body (5); a second hydraulic rod (453) is fixedly mounted on the cantilever plate (3); a telescopic section of the second hydraulic rod (453) is fixedly connected to the circular ring plate (41); a cylinder body of the first hydraulic rod (452) is connected to a cylinder body of the second hydraulic rod (453) via a conduit (454).

5. The high-speed shaft expansion sleeve intelligent tightening device according to claim 4 is characterized in that: A valve ball (455) is rotatably provided on the cylinder body of the second hydraulic rod (453) at a position corresponding to the guide tube (454), and a T-shaped flow channel is provided on the valve ball (455). A piston plate (456) is slidably provided on the right inner wall of the cylinder body of the second hydraulic rod (453) to the left and right, and a coil spring is provided between the piston plate (456) and the cylinder body of the second hydraulic rod (453).

6. The high-speed shaft expansion sleeve intelligent tightening device according to claim 1 is characterized in that: The synchronization assembly (65) comprises a synchronization gear (651) rotatably arranged in the middle of the right side of the follower plate (61); a connecting plate (652) is fixedly installed on the side of the two sliding plate frames (63) away from each other; a rack (653) is fixedly installed on the side of the connecting plate (652) close to the synchronization gear (651); and the two racks (653) are meshed on both sides of the synchronization gear (651).

7. The high-speed shaft expansion sleeve intelligent tightening device according to claim 1 is characterized in that: The guide assembly (66) comprises a blocking plate (661) which is slidably inserted on the mounting support plate (62) along the length direction of the follower plate (61), and a semicircular groove is formed on one side of the blocking plate (661) close to the middle of the variable pitch axle box body (5), and the inner diameter of the semicircular groove is equal to the outer diameter of the tightening shaft of the variable pitch axle box body (5).

8. The high-speed shaft expansion sleeve intelligent tightening device according to claim 7 is characterized in that: When the side of the blocking plate (661) away from the middle of the pitch change axle box body (5) is flush with the side of the sliding plate frame (63) away from the clamping block (64), the axis of the semicircular groove on the blocking plate (661) is located in the middle position between the two clamping blocks (64) at corresponding positions.

9. The high-speed shaft expansion sleeve intelligent tightening device according to claim 7, characterized in that: Two fixed blocks (663) are fixedly installed on the right side of the blocking plate (661) near the semicircular groove. The two fixed blocks (663) are arranged along the length of the blocking plate (661). The length of the fixed block (663) near the semicircular groove is greater than that of the other fixed block (663). A right-angled trapezoidal block (664) is slidably arranged on the mounting support plate (62) along its length direction. A supporting spring is arranged between the right-angled trapezoidal block (664) and the mounting support plate (62).

10. The high-speed shaft expansion sleeve intelligent tightening device according to claim 1, characterized in that: A bidirectional screw (631) is rotatably arranged on the sliding plate frame (63); a side of the clamping block (64) away from the middle of the variable pitch axle box body (5) is threadedly connected to the bidirectional screw (631); and the sides of the two clamping blocks (64) on the same sliding plate frame (63) that are close to each other form a V-shaped structure.

Images