CN215999325U

CN215999325U - Active end structure of welding positioner

Info

Publication number: CN215999325U
Application number: CN202122388744.3U
Authority: CN
Inventors: 赵宇; 贾乐
Original assignee: Wuxi Xinjinyu Intelligent Manufacturing Co ltd
Current assignee: Wuxi Xinjinyu Intelligent Manufacturing Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-11
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a driving end structure of positioner relates to welding auxiliary assembly technical field, including the motor, with the reduction gear that the motor is connected and be used for the connecting piece that is connected with the frame that shifts, the output shaft of reduction gear pass through the bearing with the connecting piece is connected, drives the connecting piece rotates the output shaft of reduction gear with be equipped with the tight cover that expands between the bearing. By the arrangement, the expansion sleeve is in interference fit with the output shaft of the speed reducer and the bearing, the load of the axial force, the torque or the combined action of the axial force and the torque is transmitted by the friction force generated by the interference, and when the load of the displacement frame exceeds a certain weight and the overload phenomenon occurs, the expansion sleeve slides relatively to lose the coupling action, so that the motor and the speed reducer are protected from being damaged; the inner taper sleeve of the expansion sleeve is tightly attached to the output shaft of the speed reducer and the outer taper sleeve is tightly attached to the bearing, so that the connecting position is not easy to corrode or rust.

Description

Active end structure of welding positioner

Technical Field

The utility model relates to a welding auxiliary assembly technical field, more specifically say, relate to an active end structure of positioner.

Background

The welding positioner is used for changing the welding position of a structural part and enabling a welding seam to be welded to move to an ideal position for welding operation.

The welding positioner generally comprises a frame and two mounting seats arranged on the frame, wherein a driving end is arranged on one mounting seat, a driven end is arranged on the other mounting seat, and a rotatable overturning platform is arranged between the two mounting seats. At present, a driving part at a driving end is connected with a turnover table through a large-scale bearing so as to drive the turnover table to rotate, and an output shaft of the driving part is directly connected with the bearing and adopts a hard connection mode such as a bolt or a key. When the overload phenomenon occurs, driving components such as a motor, a speed reducer and the like cannot work normally and are easy to burn out to cause faults; further, a gap is formed between the output shaft of the drive member and the bearing, and corrosion, rust, and the like often occur in a portion in the gap.

Therefore, how to solve the problems that the driving component is easy to burn out and break down when in overload, and the connecting position of the output shaft and the bearing is easy to corrode and rust, etc., is an important technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a positioner's initiative end structure to solve when transshipping drive unit and easily burn out and break down, and the hookup location department of output shaft and bearing is perishable rusts scheduling problem. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a driving end structure of positioner, including the motor, with the reduction gear that the motor is connected and be used for the connecting piece that is connected with the frame that shifts, the output shaft of reduction gear pass through the bearing with the connecting piece is connected, drives the connecting piece rotates the output shaft of reduction gear with be equipped with the tight cover that expands between the bearing.

Preferably, the bearing is a toothless slewing bearing, the expansion sleeve is connected with a central hole of the toothless slewing bearing, an inner ring of the toothless slewing bearing is connected with the connecting piece, and an outer ring of the toothless slewing bearing is fixedly arranged.

Preferably, a transmission sleeve is further arranged between the expansion sleeve and the toothless slewing bearing.

Preferably, a stepped shaft is coaxially arranged at the end part of an output shaft of the speed reducer, the output shaft of the speed reducer and the stepped shaft synchronously rotate, and the expansion sleeve is arranged between the stepped shaft and the bearing.

Preferably, the motor is connected with the speed reducer through a speed reducer flange, and an outer ring of the toothless slewing bearing is fixedly connected with the speed reducer flange.

Preferably, the transition piece is connected between the speed reducer flange and the outer ring of the toothless slewing bearing, the transition piece is of a cover body structure, and the connection position of the speed reducer output shaft and the stepped shaft is located inside the transition piece.

Preferably, the connecting member is a rotating disk perpendicular to an output shaft of the speed reducer.

Preferably, a positioning pin is arranged between the output shaft of the speed reducer and the stepped shaft so that the stepped shaft and the output shaft of the speed reducer are coaxial.

The utility model provides an among the technical scheme, the initiative end structure of positioner includes motor, reduction gear, connecting piece, and reduction gear and motor are connected, and the connecting piece is connected through the bearing with the output shaft of reduction gear to the connecting piece still is connected with the frame that shifts, and the frame that shifts is used for laying the work piece platform, and the work piece platform can the bearing treat welding workpiece with the location. An expansion sleeve is also arranged between the output shaft of the speed reducer and the bearing. The motor and the speed reducer work, the output shaft of the speed reducer drives the connecting piece to rotate, and then the connecting piece drives the shifting frame to rotate, so that the welding seam of the workpiece to be welded moves to an ideal position to be welded for welding operation. According to the arrangement, the expansion sleeve is in interference fit with an output shaft and a bearing of the speed reducer according to the principle that the inner taper sleeve is reduced and the outer taper sleeve is expanded, the load of axial force, torque or the compound action of the axial force and the torque is transmitted by virtue of friction force generated by interference, when the load amount of the displacement frame exceeds a certain weight and the overload phenomenon occurs, the expansion sleeve slides relatively to lose the coupling effect, the expansion sleeve is loosened to rotate in situ, the motor and the speed reducer can work, and the motor and the speed reducer cannot be damaged; the inner taper sleeve of the expansion sleeve is tightly attached to the output shaft of the speed reducer and the outer taper sleeve is tightly attached to the bearing, so that the connecting position is not easy to corrode or rust.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the embodiment of the utility model provides an active end structure schematic diagram of positioner.

In the figure:

1-motor, 2-reducer, 3-reducer flange, 4-stepped shaft, 5-expansion sleeve, 6-transmission sleeve, 7-toothless slewing bearing, 8-transition piece, 9-connecting piece and 10-locating pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The purpose of this embodiment is to provide a driving end structure of positioner, through set up the tight cover that expands between the output shaft of reduction gear and bearing, solve motor and reduction gear fragile under the overload condition and the output shaft of reduction gear and the easy rusty problem of corroding of the hookup location of bearing.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1, in this embodiment, the driving end structure of the welding positioner includes a motor 1, a speed reducer 2, and a connecting member 9, where the speed reducer 2 is connected to the motor 1, the connecting member 9 is connected to an output shaft of the speed reducer 2 through a bearing, and the connecting member 9 is further connected to a displacement frame, where the displacement frame is used to mount a workpiece table, and the workpiece table can support and position a workpiece to be welded. An expansion sleeve 5 is also arranged between the output shaft of the speed reducer 2 and the bearing. The motor 1 and the speed reducer 2 work, the output shaft of the speed reducer 2 drives the connecting piece 9 to rotate, and then the connecting piece 9 drives the displacement frame to rotate, so that the welding seam of the workpiece to be welded moves to an ideal position to be welded for welding operation.

The expansion sleeve 5 is in interference fit with an output shaft and a bearing of the speed reducer 2 by the principle that the inner taper sleeve is reduced and the outer taper sleeve is expanded, the load of axial force, torque or the compound action of the axial force and the torque is transmitted by the friction force generated by interference, when the load amount of the displacement frame exceeds a certain weight and the overload phenomenon occurs, the expansion sleeve 5 slides relatively to lose the coupling effect, at the moment, the expansion sleeve 5 is loosened to rotate in situ, the motor 1 and the speed reducer 2 can also work, and the motor 1 and the speed reducer 2 cannot be damaged; the inner taper sleeve of the expansion sleeve 5 is tightly attached to the output shaft of the speed reducer 2 and the outer taper sleeve is tightly attached to the bearing, so that the connecting position is not easy to corrode or rust. So set up, solved among the prior art motor 1 and reduction gear 2 fragile when transshipping and the output shaft of reduction gear 2 and the perishable rusty problem of the hookup location of bearing.

In a preferred scheme of the embodiment, the bearing is a toothless slewing bearing 7, an output shaft of the speed reducer 2 is connected with a connecting piece 9 through the toothless slewing bearing 7, specifically, the expansion sleeve 5 is arranged between the output shaft of the speed reducer 2 and a central hole of the toothless slewing bearing 7, an inner ring of the toothless slewing bearing 7 is connected with the connecting piece 9, and an outer ring of the toothless slewing bearing 7 is fixedly arranged.

So set up, toothless slewing bearing 7 is a large-scale bearing that can bear synthetic load, can bear great axial, radial load and overturning moment simultaneously, and when bearing great load, toothless slewing bearing 7 is difficult for receiving the damage, and stability is better, avoids appearing fatigue wear and the vibration and the noise problem that cause.

In the present embodiment, the end portion of the output shaft of the speed reducer 2 is coaxially provided with the stepped shaft 4, the output shaft of the speed reducer 2 rotates synchronously with the stepped shaft 4, and the expansion sleeve 5 is disposed between the stepped shaft 4 and the bearing, that is, the expansion sleeve 5 is disposed between the stepped shaft 4 and the center hole of the toothless slewing bearing 7. In a preferred scheme of the embodiment, a transmission sleeve 6 is further arranged between the expansion sleeve 5 and the toothless slewing bearing 7. The driving sleeve 6 serves to transmit the load.

In a specific embodiment, the end part of the output shaft of the speed reducer 2 is coaxial and is fixedly provided with a stepped shaft 4, the stepped shaft 4 is sleeved with an expansion sleeve 5, a transmission sleeve 6 is arranged on the periphery of the expansion sleeve 5, and the transmission sleeve 6 extends into a central hole of a toothless slewing bearing 7.

In a preferred embodiment of the present invention, a positioning pin 10 is disposed between the output shaft of the speed reducer 2 and the stepped shaft 4, and the positioning pin 10 is disposed in a central shaft hole of the output shaft of the speed reducer 2 and a central shaft hole of the stepped shaft 4, so that the stepped shaft 4 and the output shaft of the speed reducer 2 are coaxial, and then the output shaft of the speed reducer 2 and the stepped shaft 4 are fixedly connected by a fastener.

In the present embodiment, the motor 1 is connected to the speed reducer 2 through the speed reducer flange 3, and the outer ring of the toothless slewing bearing 7 is fixedly connected to the speed reducer flange 3. Furthermore, a transition piece 8 is further arranged between the reducer flange 3 and the outer ring of the toothless slewing bearing 7, one end of the transition piece 8 is fixedly connected with the reducer flange 3, and the other end of the transition piece 8 is fixedly connected with the outer ring of the toothless slewing bearing 7. The transition piece 8 is of a cover body structure, and the connecting position of the output shaft of the speed reducer 2 and the stepped shaft 4 is positioned inside the transition piece 8.

Due to the arrangement, the transition piece 8 can play a certain protection role, and impurities such as dust and the like are prevented from entering the connecting position of the output shaft of the speed reducer 2 and the stepped shaft 4 and the structures such as the toothless slewing bearing 7 and the like; but also plays a role of fixedly connecting the outer ring of the toothless slewing bearing 7.

In the present exemplary embodiment, the coupling element 9 is a rotary disk which is fixedly connected to the inner ring of the toothless slewing bearing 7 and is arranged perpendicularly to the output shaft of the reduction gear 2.

It should be noted that the driving end structure and the driven end of the welding positioner are arranged correspondingly, and the displacement frame is arranged between the driving end structure and the driven end. The welding positioner further comprises a bottom beam, and a driving seat and a driven seat which are arranged at two ends of the bottom beam, wherein the driving end structure is arranged on the driving seat, and the driven end is arranged on the driven seat.

The driven end comprises a connecting shaft, a bearing and a connecting disc, the connecting shaft and the stepped shaft 4 are coaxially arranged, one end of the connecting shaft is connected with the driven seat, the other end of the connecting shaft is fixedly connected with one side of the connecting disc, the connecting disc of the driving end structure is arranged in parallel with the connecting disc of the driven end, and two ends of the deflection frame are fixedly connected with the two connecting discs respectively. The connecting shaft is connected with the driven seat through a bearing, and the bearing is a universal bearing.

Due to the arrangement, the universal bearing is convenient for coaxially arranging the stepped shaft 4 of the driving end structure and the connecting shaft of the driven end, so that the service lives of the motor 1 and the speed reducer 2 are prolonged; in the existing design, a common deep groove ball bearing and the like are usually adopted for connection, the coaxiality of the driving end structure and the driven end mainly depends on the machining and assembling precision, the phenomenon that parts are damaged easily occurs, and the difficulty of the assembling process is high, so that the universal bearing is used for solving the problem in the scheme.

The driven end also comprises a sealing cover, a through hole is formed in the center of the sealing cover, the connecting shaft penetrates through the through hole, and the sealing cover covers the universal bearing. So set up, the sealed cowling plays certain guard action, prevents that impurity such as dust from dropping on connecting axle and universal bearing.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a positioner's initiative end structure, its characterized in that, including motor (1), with reduction gear (2) that motor (1) is connected and be used for with connecting piece (9) that the frame is connected shifts, the output shaft of reduction gear (2) through the bearing with connecting piece (9) are connected, in order to drive connecting piece (9) rotate the output shaft of reduction gear (2) with be equipped with between the bearing and expand tight cover (5).

2. The driving end structure according to claim 1, wherein the bearing is a toothless rotary support (7), the expansion sleeve (5) is connected with a central hole of the toothless rotary support (7), an inner ring of the toothless rotary support (7) is connected with the connecting piece (9), and an outer ring is fixedly arranged.

3. The driving end structure according to claim 2, characterized in that a transmission sleeve (6) is further arranged between the expansion sleeve (5) and the toothless slewing bearing (7).

4. The driving end structure according to claim 2, wherein a stepped shaft (4) is coaxially arranged at the end of the output shaft of the speed reducer (2), the output shaft of the speed reducer (2) rotates synchronously with the stepped shaft (4), and the expansion sleeve (5) is arranged between the stepped shaft (4) and the bearing.

5. The drive end structure according to claim 4, characterized in that the motor (1) and the reducer (2) are connected by a reducer flange (3), and the outer ring of the toothless slewing bearing (7) is fixedly connected with the reducer flange (3).

6. The drive end structure according to claim 5, further comprising a transition piece (8) connected between the reducer flange (3) and the outer ring of the toothless slewing bearing (7), wherein the transition piece (8) is in a cover structure, and the connection position of the output shaft of the reducer (2) and the stepped shaft (4) is located inside the transition piece (8).

7. The drive end structure according to claim 1, characterized in that the connecting piece (9) is a rotating disc perpendicular to the output shaft of the reducer (2).

8. The drive end structure according to claim 4, characterized in that a locating pin (10) is provided between the output shaft of the speed reducer (2) and the stepped shaft (4) so that the stepped shaft (4) is coaxial with the output shaft of the speed reducer (2).