CN210388987U

CN210388987U - Transmission flange fixing device

Info

Publication number: CN210388987U
Application number: CN201921113328.9U
Authority: CN
Inventors: 张晓红
Original assignee: China National Heavy Duty Truck Group Datong Gear Co Ltd
Current assignee: China National Heavy Duty Truck Group Datong Gear Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-04-24
Anticipated expiration: 2029-07-16

Abstract

The utility model relates to an automotive transmission assembles technical field, specifically is a derailleur flange fixing device. Comprises a fixed disc, a transition disc, a connecting pin, a spring, an anti-rotation drive plate and a bolt. The utility model provides a screw up device has prevented that derailleur flange nut from screwing up the emergence of in-process flange follow-up commentaries on classics phenomenon, and the equipment of screwing up that makes the electric tightening axle be equipped with is used for screwing up commercial car large torque flange nut and becomes reality.

Description

Transmission flange fixing device

Technical Field

The utility model relates to an automotive transmission assembles technical field, specifically is a derailleur flange fixing device.

Background

Based on commercial car derailleur flange nut screwing up the moment of torsion requirement at about 1000N.m, the moment of torsion can't accurately be guaranteed to screw up with the wind big gun on assembly scene before, because the moment of torsion of screwing up is big, and the back is screwed up to the wind big gun, also brings very big difficulty for the moment of torsion detects. Therefore, the tightening torque of the flange nut is caused to be in an uncontrolled state for a long period of time. In order to improve the assembling quality of the flange nut, an electric tightening shaft is adopted for tightening. However, during tightening of the flange nut by the power tightening shaft, the flange may follow. Therefore, it is necessary to develop a device for preventing the flange from following when the flange nut is screwed.

As shown in fig. 5, the flange is connected to the position of the transmission shaft near the tail end through a key, the center of the flange is provided with a hole, the center hole penetrates through the shaft end, and the flange is equivalently sleeved on the shaft; the flange nut is then screwed onto the shaft end.

Disclosure of Invention

The utility model discloses a solve present derailleur flange nut and adopt when electronic tightening shaft screws up, the technical problem of the following of flange changes provides a derailleur flange fixing device, can satisfy the use of the different square plate flange of specification and disc flange.

The utility model discloses an adopt following technical scheme to realize: a speed changer flange fixing device comprises a fixed disc, a transition disc, a connecting pin, a spring, an anti-rotation drive plate and a bolt; the center of the fixed disk is provided with a hole, and the upper surface of the fixed disk is provided with a mounting hole; the outer edge of the lower end of the fixed disk is provided with a groove, and the lower end surface of the fixed disk is provided with a threaded hole; a hole is formed in the center of the transition disc, a connecting hole is formed in the upper surface of the transition disc, and a protrusion corresponding to the groove is formed in the position, close to the outer edge, of the upper surface of the transition disc; the protrusion and the groove are provided with holes for mounting springs, and the springs are arranged in the holes corresponding to the protrusion and the groove; the fixed disc and the transition disc are connected by a connecting pin; one end of the connecting pin is a thread and is screwed into the threaded hole of the fixed disc, and the other end of the connecting pin is clamped in the connecting hole of the transition disc; the center of the anti-rotation drive plate is provided with a hole; the anti-rotation drive plate is positioned below the transition plate and is connected with the transition plate through a bolt.

Springs are arranged in corresponding holes of the fixed disc and the transition disc, so that the fixed disc and the transition disc can float relatively. The anti-rotation drive plate is connected with the transition plate through a bolt, so that the use requirement that the anti-rotation drive plate is quickly replaced according to different requirements of the transmission flange is met.

The utility model discloses the cooperation is equipped with the equipment use of electronic tightening shaft for on the derailleur assembly line, prevented that derailleur flange nut from screwing up the emergence of in-process flange follow-up rotation phenomenon, the process explanation is screwed up to the flange fastening nut who takes the form of square plate to the outward appearance: after the transmission reaches the station, a servo motor of the electric tightening shaft equipment drives the electric tightening shaft and the transmission flange fixing device to move downwards simultaneously (note: the electric tightening shaft and the transmission flange fixing device are fixed on the same sliding table of the equipment, and a tightening sleeve head for tightening a flange nut is connected to the electric tightening shaft), so that when the tightening sleeve head on the electric tightening shaft and the flange nut are screwed together, the lower end face of the anti-rotation drive plate is just contacted with the transmission flange, and the floating amount between the fixed disc and the transition disc is reduced, namely the spring is in a compressed state. At this moment, start electronic screwing up the axle, begin to screw up flange nut, because the derailleur characteristic leads to, the nut can drive the flange and then rotate at the tightening in-process that just begins, when the flange rotates its edge and prevents that it corresponds the state with the driver plate hole edge that changes, the transition dish with prevent that the driver plate matches with the flange under dead weight and spring action and be in the same place, play the effect that prevents the flange and follow the commentaries on classics.

Compared with the prior art the utility model discloses there is following beneficial effect:

the utility model provides a derailleur flange fixing device has prevented that derailleur flange nut from screwing up the emergence of process flange follow-up commentaries on classics phenomenon, makes the equipment of screwing up that is equipped with electronic tightening shaft screw up commercial car large torque flange nut and becomes reality.

Drawings

Fig. 1 is a schematic view of a transition disc structure.

Fig. 2 is a second schematic view of the structure of the transition plate.

Fig. 3 is a schematic view of the structure of the rotation-preventing dial.

FIG. 4 is a schematic diagram of a transmission flange securement device.

FIG. 5 is a schematic view of the arrangement where the transmission flange nut is tightened.

Fig. 6 is a schematic view of the overall structure of the electric tightening shaft.

Fig. 7 is a schematic structural view of a power tightening shaft and the device of the present invention in cooperation.

The figures are labeled as follows:

1-fixed disc, 2-transition disc, 3-connecting pin, 4-spring, 5-rotation-preventing dial, 6-bolt, 7-transmission flange, 8-flange nut, 9-frame, 10-sliding table, 11-electric tightening shaft, 12-groove, 13-mounting hole, 14-protrusion, 15-connecting hole and 16-pin hole.

Detailed Description

The other end of the connecting pin 3 is a cylinder with the diameter larger than the thread, and the end face of the cylinder close to one side of the thread is clamped in the connecting hole 15 of the transition disc 2. As can be seen from fig. 1 and 2, the connecting hole 15 has two structures in the axial direction, the end of the transition disk 2 with the protrusion 14 is seen as one large hole and one small hole (i.e. fig. 1), the other end face of the transition disk 2 (i.e. the face opposite to the protrusion 14 of the transition disk 2) is seen as an oval (i.e. fig. 2), the depth of the oval hole is slightly larger than the height of the cylinder at the other end of the connecting pin 3, the end face of the connecting pin 3 close to the side of the screw thread is clamped in the small hole of the connecting hole 15 of the transition disk 2, and the screw thread end of the connecting pin 3 is screwed into the screw hole of the. The spring is arranged to enable a certain floating space to be reserved between the transition disc and the fixed disc.

The two grooves 12 on the fixed disc 1 and the two protrusions 14 on the transition disc 2 are symmetrically arranged around the central hole axis; the outer side wall of the anti-rotation driving plate 5 is symmetrically provided with a pair of pin holes, the side wall of the transition plate 2 is also symmetrically provided with a pair of pin holes 16, the upper part of the anti-rotation driving plate 5 extends into the transition plate 2 from bottom to top, and the pin 6 is inserted into the pin holes 16 to realize the connection of the transition plate 2 and the anti-rotation driving plate 5.

Fig. 1 and 2 show the structure of the transition plate. In the figure 1, the upper end surface of the transition disc is provided with a pair of bulges, the bulges are provided with holes, the periphery of the bottom of the transition disc extends downwards, and the side wall of the extending part is provided with a pin hole. Fig. 3 shows an anti-rotation driving plate, which has a central opening and a bottom with an inner diameter of substantially square shape (with a certain radian, suitable for a flange fastening nut with a square plate shape). FIG. 4 is a schematic view of the assembled structure of the present application, wherein the protrusions of the transition tray are inserted into the grooves of the fixed tray, and springs are disposed between the protrusions and the grooves; the fixed disc and the transition disc are connected through a connecting pin; the connecting holes can facilitate the connection and the disassembly of the connecting pin. The number of the inserted pins is two, the number of the springs is two, and the number of the connecting pins is four.

As shown in fig. 6 and 7, the power tightening shafts are mounted on slide tables mounted on respective frames, and the slide tables can be moved up and down on the frames. When the installation is concrete, this application the device is connected with slip table downside surface through establishing the bolt in the mounting hole of fixed disk upper surface, and electronic screwing shaft top-down passes fixed disk, transition dish and prevents the centre bore of changeing the driver plate, and the slip table moves down, and terminal surface and derailleur flange contact under until preventing changeing the driver plate to make the float volume between ring flange and the transition dish reduce, the spring is in compression state. At this moment, start electronic screwing up the axle, begin to screw up flange nut, because the derailleur characteristic leads to, the nut can drive the flange and then rotate at the tightening in-process that just begins, when the flange rotates its edge and prevents that it corresponds the state with the driver plate hole edge that changes, the transition dish with prevent that the driver plate matches with the flange under dead weight and spring action and be in the same place, play the effect that prevents the flange and follow the commentaries on classics. And when the tightening torque reaches the target torque, the tightening shaft stops working, the sliding table ascends, and tightening is completed.

Claims

1. A transmission flange securement device characterized by: comprises a fixed disc (1), a transition disc (2), a connecting pin (3), a spring (4), an anti-rotation drive plate (5) and a bolt (6); the center of the fixed disk (1) is provided with a hole, and the upper surface of the fixed disk (1) is provided with a mounting hole (13); a groove (12) is formed in the outer edge of the lower end of the fixed disc (1), and a threaded hole is formed in the lower end face of the fixed disc (1); a hole is formed in the center of the transition disc (2), a connecting hole (15) is formed in the upper surface of the transition disc (2), and a protrusion (14) corresponding to the groove is formed in the position, close to the outer edge, of the upper surface of the transition disc (2); the protrusion (14) and the groove (12) are both provided with holes for mounting the spring (4), and the spring (4) is arranged in the corresponding holes of the protrusion (14) and the groove (12); the fixed disc (1) and the transition disc (2) are connected by a connecting pin (3); one end of the connecting pin (3) is a thread and is screwed into the threaded hole of the fixed disc (1), and the other end of the connecting pin is clamped in the connecting hole (15) of the transition disc (2); the center of the anti-rotation drive plate (5) is provided with a hole; the anti-rotation drive plate (5) is positioned below the transition disc (2) and is connected with the transition disc (2) through a bolt (6).

2. The transmission flange fixing device according to claim 1, wherein: the connecting hole (15) comprises a large hole and a small hole which are communicated with each other, the other end of the connecting pin (3) is a cylinder with the diameter larger than that of the screw thread, and the end face of the cylinder, close to one side of the screw thread, is clamped at the small hole of the connecting hole (15) of the transition disc (2).

3. The flange fixing apparatus for a transmission according to claim 1 or 2, wherein: the number of the grooves (12) on the fixed disc (1) and the number of the protrusions (14) on the transition disc (2) are two, and the grooves and the protrusions are symmetrically arranged around the central hole axis; a pair of pin holes are symmetrically formed in the outer side wall of the anti-rotation driving plate (5), a pair of pin holes (16) are symmetrically formed in the side wall of the transition plate (2), the upper portion of the anti-rotation driving plate (5) extends into the transition plate (2) from bottom to top, and a bolt (6) is inserted into each pin hole (16) to achieve connection of the transition plate (2) and the anti-rotation driving plate (5).