CN-121972951-A - Tightening device and method for coupler shell

CN121972951ACN 121972951 ACN121972951 ACN 121972951ACN-121972951-A

Abstract

The invention discloses a tightening device and a tightening method for a coupler shell, which belong to the technical field of coupler assembly and comprise a supporting and positioning assembly, a plurality of tightening execution assemblies and a plurality of angle display assemblies, wherein the supporting and positioning assembly is used for being positioned in an adapting way with the coupler shell, the tightening execution assemblies are distributed along the circumferential direction of the supporting and positioning assembly, one end of each tightening execution assembly is used for being matched with a bolt of the coupler shell, the other end of each tightening execution assembly is connected with the angle display assembly, the angle display assembly comprises an angle calibration piece and an angle indicator, and the angle indicator and the tightening execution assemblies synchronously rotate and are used for displaying the angle of the tightening execution assemblies for driving the bolt to rotate. The invention can accurately control the bolt tightening angle and improve the assembly efficiency.

Inventors

SUN XIAOHUI
TIAN DAN
ZHAO LIYUE
LIU ZHONGJIE
KUANG MINGFEI
LIU XIAOPAN
HE XIAOYAN
LI JIN
ZHANG HAINING
Cong Jianliang

Assignees

河北华北柴油机有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260303

Claims (9)

1. The tightening device for the coupler shell is characterized by comprising a supporting and positioning assembly, a plurality of tightening execution assemblies and a plurality of angle display assemblies, wherein the supporting and positioning assembly is used for being positioned in an adaptive manner with the coupler shell, the tightening execution assemblies are distributed along the circumferential direction of the supporting and positioning assembly, one end of each tightening execution assembly is used for being matched with a bolt of the coupler shell, the other end of each tightening execution assembly is connected with the angle display assembly, the angle display assembly comprises an angle calibration piece and an angle indication piece, and the angle indication piece and the tightening execution assemblies synchronously rotate and are used for displaying angles of the tightening execution assemblies for driving the bolts to rotate.
2. The tightening device for the coupling housing according to claim 1, wherein the supporting and positioning assembly comprises an auxiliary body (1), hanging plates (2) and an adjustable shaft (3) assembly, wherein the hanging plates (2) are detachably connected with the auxiliary body (1), the adjustable shaft (3) assembly is distributed along the circumferential direction of the auxiliary body (1), one end of the adjustable shaft (3) assembly is connected with the auxiliary body (1), and an elastic supporting piece is arranged at the other end of the adjustable shaft (3) assembly and used for being abutted and positioned with the coupling housing.
3. The tightening device for the coupling housing according to claim 2, wherein the adjustable shaft (3) assembly comprises an adjustable shaft (3), a rubber sleeve (4), a gasket (5) and a nut, wherein the rubber sleeve (4) is sleeved at one end of the adjustable shaft (3), the other end of the adjustable shaft (3) penetrates through the auxiliary body (1), and the gasket (5) and the nut are sequentially sleeved at the end of the adjustable shaft (3) and used for fixing the adjustable shaft (3) on the auxiliary body (1).
4. The tightening device for the coupling housing according to claim 2, wherein the supporting and positioning assembly further comprises a hand wheel (6) and a screw seat (7), wherein the screw seat (7) is fixed on the auxiliary body (1) through screws, and the hand wheel (6) is connected with the screw seat (7) through pins (8) and is used for rotationally adjusting the fitting degree of the supporting and positioning assembly and the coupling housing.
5. The tightening device for the coupling shell according to claim 1, wherein the tightening execution assembly comprises an adapter sleeve (9), an adapter shaft (10), a hexagonal plate head (11) and an elastic reset piece (12), the adapter sleeve (9) is fixed on an auxiliary body (1) of the supporting and positioning assembly, one end of the adapter shaft (10) is slidably inserted into the adapter sleeve (9), the other end of the adapter shaft is detachably connected with the hexagonal plate head (11), and the elastic reset piece (12) is arranged between the adapter shaft (10) and the adapter sleeve (9) and used for resetting the adapter shaft (10).
6. The tightening device for the coupling housing according to claim 5, wherein the tightening execution assembly further comprises balls (13) and O-rings (14), wherein grooves are formed in one end, close to the adapter shaft (10), of the hexagonal plate head (11), the balls (13) are embedded in the grooves, the O-rings (14) are sleeved on the outer wall of the hexagonal plate head (11) and used for limiting the balls (13) in the grooves, and the balls (13) are abutted against the adapter shaft (10) to reduce rotation friction.
7. The tightening device for the coupling housing according to claim 1, wherein the angle calibration part of the angle display assembly comprises a dial (15) and the angle indication part comprises a pointer (16), wherein the dial (15) is fixed on the auxiliary body (1) of the supporting and positioning assembly through a bushing, a retainer ring and a nut, the pointer (16) is connected with the adapter shaft (10) of the tightening execution assembly through a pointer (16) sleeve, the pointer (16) synchronously rotates along with the adapter shaft (10), and the dial (15) is provided with angle scales for displaying the rotation angle of the bolt.
8. The tightening device for the coupling housing according to claim 1, wherein the number of the tightening execution assemblies is equal to the number of bolts of the coupling housing, and the tightening execution assemblies are divided into two groups of an inner ring and an outer ring along the circumferential direction of the auxiliary body (1), and the two groups of tightening execution assemblies are alternately distributed.
9. A tightening method for a coupling housing, characterized in that a tightening device according to any one of claims 1 to 8 is used, comprising the steps of: S1, assembling a device, namely connecting a hanging plate (2) with an auxiliary body (1) through a bolt, fixing a screw seat (7) on the auxiliary body (1) through a screw, connecting a hand wheel (6) with the screw seat (7) through a pin (8), inserting an adapter sleeve (9) into the auxiliary body (1) and fixing the adapter sleeve through a retainer ring, fixing a bushing on the auxiliary body (1) through the bolt, installing a dial (15) sleeved with an O-shaped ring (14) into the bushing, positioning and compressing by the retainer ring and locking by the screw, installing a pointer (16) on the adapter sleeve (9) and fixing the pointer through the retainer ring, inserting an adapter shaft (10) into the adapter sleeve (9), connecting an elastic reset piece (12) with the adapter shaft (10), embedding a ball (13) into a groove of a hexagonal plate head (11), abutting against the end of the adapter shaft (10) after the O-shaped ring (14) is sleeved, welding the pointer (16) onto the pointer (16), sleeving the pointer (4), sleeving an adjustable shaft (3), tightly penetrating one end of the adjustable shaft (3), and tightly assembling the other end of the adjustable shaft (3) with the single-piece washer (1), and carrying out the same assembly steps in sequence; S2, positioning and clamping, namely respectively penetrating bolts of a coupler shell into mounting holes and manually pre-screwing 2-3 buckles, hoisting the assembled screwing device above the coupler shell through a lifting plate (2) to enable all hexagonal plate heads (11) to be matched and clamped with inner hexagonal structures of corresponding bolts, rotating hand wheels (6) on two sides to enable rubber sleeves (4) of an adjustable shaft (3) assembly to be tightly abutted with the surface of the coupler shell, and ensuring that the screwing device and the coupler shell are in the same horizontal plane; S3, presetting an angle, namely adopting a torque tool to match with a tightening execution assembly to complete pre-tightening of all bolts according to preset pre-tightening force, rotating a dial (15), and adjusting all pointers (16) to zero position graduation marks of the dial (15); s4, step-by-step screwing, namely, rotating the screwing execution assembly to drive the bolts to rotate according to the sequence of the inner ring and the outer ring, precisely controlling the rotation angle of each bolt to a preset value through the corresponding relation between the pointer (16) and the scale of the scale disc (15), and reversely rotating the hand wheel (6) to enable the rubber sleeve (4) to be separated from the coupling shell after all the bolts are screwed, hoisting and removing the screwing device, so that screwing operation of the coupling shell is completed.

Description

Tightening device and method for coupler shell Technical Field The invention relates to the technical field of coupling assembly, in particular to a tightening device and method for a coupling shell. Background The coupler is a mechanical part for connecting two shafts or the shafts and a rotary member, and the two shafts or the shafts and the rotary member rotate together in the process of transmitting motion and power without disengaging, and the assembly quality of a shell directly influences the transmission precision and the service life of the coupler. The coupling housing is usually installed by adopting 14 10.9-level high-strength bolts, the bolt tightening is required to follow the double specifications of pretightening force and tightening angle, and meanwhile, the bolts are required to be tightened step by step according to the sequence of inner ring and outer ring, and the single bolts are not allowed to be tightened in place at one time. In the prior art, due to the lack of a dedicated tightening tool, operators often score marks around the bolt head and the bolt mounting hole, and the angle of rotation of the bolt is estimated by observing the relative positions of the marks during tightening. The method has the advantages that the bolt of the coupler shell is of an inner hexagon structure, the outer circle of the bolt is of a round shape, obvious defects exist in the marking mode, firstly, the angle estimation error is large, the tightening angle cannot be accurately controlled, the bolt pretightening force is uneven, the assembly precision and the product quality of the coupler shell are affected, secondly, the number of the bolts is large, the operation flow of step-by-step tightening is complex, the labor intensity of operators is high, the assembly efficiency is low, thirdly, the marking is easy to fall off due to friction or greasy dirt, and the accuracy of angle control is further reduced. Therefore, research and development of a special tightening device and method capable of accurately controlling the tightening angle of a bolt and improving the assembly efficiency becomes a technical problem to be solved in the field of assembly of a coupling shell. Disclosure of Invention The method aims to solve the problems of large angle estimation error, low assembly efficiency and low accuracy in the existing method for tightening bolts by marking marks. The invention provides a tightening device and a tightening method for a coupling shell, which can accurately control the tightening angle of a bolt and improve the assembly efficiency. The invention relates to a tightening device and a tightening method for a coupling shell, wherein the technical scheme adopted by the tightening device and the tightening method is as follows: The tightening device for the coupling shell comprises a supporting and positioning assembly, a plurality of tightening execution assemblies and a plurality of angle display assemblies, wherein the supporting and positioning assembly is used for being positioned in an adaptive manner with the coupling shell, the tightening execution assemblies are distributed along the circumferential direction of the supporting and positioning assembly, one end of each tightening execution assembly is used for being matched with a bolt of the coupling shell, the other end of each tightening execution assembly is connected with the angle display assembly, the angle display assemblies comprise angle calibration pieces and angle indication pieces, and the angle indication pieces and the tightening execution assemblies synchronously rotate and are used for displaying angles of the tightening execution assemblies for driving the bolts to rotate. The technical scheme of the invention is further improved in that the device comprises a supporting and positioning assembly, a plurality of tightening execution assemblies and a plurality of angle display assemblies, wherein the supporting and positioning assembly is used for being positioned in an adapting mode with a coupler shell, the tightening execution assemblies are distributed along the circumferential direction of the supporting and positioning assembly, one end of each tightening execution assembly is used for being matched with a bolt of the coupler shell, the other end of each tightening execution assembly is connected with the angle display assembly, the angle display assembly comprises an angle calibration piece and an angle indication piece, and the angle indication piece and the tightening execution assemblies synchronously rotate and are used for displaying angles of the tightening execution assemblies for driving the bolts to rotate. The technical scheme of the invention is further improved in that the adjustable shaft assembly comprises an adjustable shaft, a rubber sleeve, a gasket and a nut, wherein the rubber sleeve is sleeved at one end of the adjustable shaft, the other end of the adjustable shaft penetrates through the auxili