CN221313138U - Clamping equipment for welding barrel parts - Google Patents

Abstract

The utility model discloses clamping equipment for welding barrel parts, which comprises: the main claw mechanism rotates on the second box body and is provided with a supporting main frame and a plurality of groups of main claw components; a plurality of groups of main claw assemblies are circumferentially arranged at the end face of the supporting main frame, and each group of main claw assemblies is provided with a second claw which is driven by hydraulic pressure to radially move; the auxiliary claw mechanism is rotatably arranged on the first box body in a concentric and transverse manner with the main claw mechanism, and is provided with an oil cylinder pull rod, a supporting main board and a plurality of groups of auxiliary claw assemblies which are uniformly arranged in the circumferential direction by taking the oil cylinder pull rod as the center; each group of auxiliary claw components is provided with a first supporting rod, a second supporting rod and a first claw which moves on the supporting main plate in the radial direction; the oil cylinder pull rod is driven by hydraulic pressure to axially move, and under the linkage action of the first support rod and the second support rod, the first claw moves radially; the utility model not only realizes the tensioning fixation of the cylinder bodies with different inner diameters and lengths, but also realizes the real-time adjustment of the tensioning of the cylinder bodies, and solves the problem of unstable clamping of the cylinder bodies caused by welding high-temperature deformation.

Description

Clamping equipment for welding barrel parts

Technical Field

The utility model relates to a clamping and fixing technology, belongs to the field of welding, and particularly relates to clamping equipment for welding cylinder parts.

Background

When the cylinder parts are welded, the axis of the cylinder is required to be horizontally placed and fixed through clamping equipment, the clamping equipment has certain rotation to meet different welding positions or angles, and then the welding robot is used for carrying out positioning welding on the cylinder 10;

The existing clamping equipment generally adopts a three-jaw or four-jaw chuck, namely, a three-jaw wrench is manually inserted into a square hole at the end part of a small bevel gear, a screw rod drives a large bevel gear to rotate, and then the large bevel gear enables a jaw to radially move, so that parts with high symmetry and simple geometry are clamped;

When the three-jaw or four-jaw chuck is used for clamping and welding the cylindrical parts, the cylindrical parts are expanded and deformed at high temperature, so that the inner diameter and the outer diameter of the parts are correspondingly changed, and the tensioning of the parts cannot be adjusted in real time to influence the welding quality; and when a cylinder with a certain length or larger mass is welded, the phenomenon of unstable clamping and even detachment caused by the eccentric weight of the cylinder is easy to occur in a single clamping process.

Disclosure of utility model

The utility model aims to provide clamping equipment for welding barrel parts, which not only realizes the tensioning and fixing of barrel bodies with different inner diameters and lengths, but also realizes the real-time tensioning of the barrel bodies in the welding process and solves the problem of unstable clamping of the barrel bodies caused by high-temperature deformation of welding.

In order to achieve the above object, the clamping equipment for welding the cylinder parts comprises:

The main claw mechanism is driven to rotate on the second box body through the driving assembly and is provided with a supporting main frame and a plurality of groups of main claw assemblies;

A plurality of groups of main claw assemblies are circumferentially arranged at the end face of the supporting main frame, and each group of main claw assemblies is provided with a second claw which is driven by hydraulic pressure to radially move;

the auxiliary claw mechanism is transversely arranged at the same center as the main claw mechanism, is rotationally arranged on the first box body towards the main claw assembly, and is provided with an oil cylinder pull rod, a supporting main board and a plurality of groups of auxiliary claw assemblies which are uniformly arranged circumferentially by taking the oil cylinder pull rod as the center;

The first box body is driven to transversely move on the ground rail assembly, and each group of auxiliary claw assemblies is provided with a first supporting rod, a second supporting rod and a first claw which radially moves on the supporting main plate;

One end of the first support rod is rotatably arranged on the support main board, the other end of the first support rod is in sliding connection with the first claw, one end of the second support rod is rotatably arranged at the end head of the oil cylinder pull rod, and the other end of the second support rod is rotatably connected with the middle part of the first support rod; the oil cylinder pull rod is driven by hydraulic pressure to axially move, and when the oil cylinder pull rod axially moves, the first claw moves radially under the linkage action of the first supporting rod and the second supporting rod.

Preferably, the main claw mechanism is further provided with a supporting main shaft which is arranged concentrically with the supporting main frame;

A driving disc which is hydraulically driven to rotate on the supporting main shaft is arranged in the supporting main frame, and a plurality of groups of arc-shaped grooves which are uniformly distributed in the circumferential direction are arranged on the driving disc; the arc track of the arc-shaped groove gradually approaches the axle center of the driving disc from the peripheral side of the driving disc;

The main claw assembly is also provided with a supporting sliding block which moves radially and a supporting roller which is arranged on the supporting sliding block;

the second claw is arranged on the supporting sliding block, and the supporting roller is movably positioned in the arc-shaped groove.

Further, the supporting main shaft is of a hollow shaft structure, and a through hole communicated with the hollow is formed in the radial position of the supporting main shaft;

one end of the second hydraulic cylinder is rotatably arranged on the supporting main frame, the telescopic end is rotatably connected with the peripheral side of the driving disc, and an oil pipe penetrates through the through hole, is led out along the hollow of the supporting main shaft and is connected with the rotary joint;

The first hydraulic cylinder is fixedly arranged on the first box body, and the telescopic end is rotationally connected with the oil cylinder pull rod;

the controller controls the actions of the first hydraulic cylinder and the second hydraulic cylinder respectively.

Further, pressure sensors for detecting tension force are arranged on the first clamping jaw and the second clamping jaw;

The pressure sensor transmits signals to the controller, and the controller receives corresponding signals and then controls the actions of the first hydraulic cylinder and the second hydraulic cylinder.

Preferably, the driving assembly is provided with a driving motor fixed on the second box body and a driving gear rotatably installed on the second box body through a slewing bearing;

the output end of the driving motor is connected with the second gear, and the second gear is meshed with the driving gear;

the support main frame is rotatably assembled on the drive gear through a slewing bearing.

Preferably, a radially arranged sliding rod is arranged at one end of the first claw, which faces the main claw assembly;

The auxiliary claw mechanism further comprises a support plate assembly connected with the support main plate through a fixed column, and a plurality of sliding grooves matched with the corresponding sliding rods are arranged in the support plate assembly.

Preferably, the first box body is assembled with the ground rail assembly through a sliding rail, a moving motor is arranged on the first box body, and a rack which is transversely arranged is arranged on the ground rail assembly;

the output end of the mobile motor is connected with a first gear, and the first gear is connected with the rack in a meshed manner.

Compared with the prior art, the clamping equipment for welding the cylinder parts has the advantages that the first clamping jaw and the second clamping jaw are radially moved in a hydraulic driving mode, so that the clamping equipment is suitable for cylinders with different inner diameters, the cylinder can be tightly expanded in real time in the welding process, the dimensional error of the cylinder caused by thermal expansion and cold contraction is solved, the corresponding clamping jaw can be hydraulically controlled to radially displace according to the change of the inner diameter of the welded cylinder, and the cylinder is tightly expanded; in addition, the auxiliary claw mechanism transversely moves to be close to or far from the main claw mechanism, so that the auxiliary claw mechanism is applicable to cylinders with different lengths;

The driving disc is hydraulically driven, and the second clamping jaw is driven to radially move through the rotation of the driving disc, so that the tensioning of the cylinder is realized, the mode can be suitable for the cylinder with larger inner diameter change, the bearing capacity is large, the stability of the tensioning force is kept, and the situation that the tensioning force is different and different hydraulic driving forces need to be matched due to angle change when the first supporting rod and the second supporting rod are adopted for linkage of the cylinders with different inner diameters is avoided;

The pressure sensors for detecting the tensioning force are arranged on the first clamping jaw and the second clamping jaw, the controller receives corresponding signals and then controls the first hydraulic cylinder and the second hydraulic cylinder to act, the tensioning force can be quantized, the fact that the main clamping jaw mechanism and the auxiliary clamping jaw mechanism are consistent in tensioning force of the cylinder body can be guaranteed, real-time feedback can be achieved in the welding process, and the controller can conveniently control and adjust the corresponding hydraulic cylinders, and the fact that the tensioning force is too large/too small and uneven is avoided.

Drawings

FIG. 1 is an overall schematic of the present utility model;

FIG. 2 is a schematic view of the main jaw mechanism of the present utility model mounted on a second housing;

FIG. 3 is a schematic view (hidden part) of the main jaw mechanism of the present utility model;

FIG. 4 is a schematic view of the main pawl mechanism and the driving disk structure of the present utility model;

FIG. 5 is a schematic diagram of a drive assembly according to the present utility model;

FIG. 6 is a schematic diagram of the assembly of the first tank and the ground rail according to the present utility model;

FIG. 7 is a schematic view of the secondary pawl mechanism of the present utility model mounted to the first housing;

FIG. 8 is a schematic view of a secondary pawl mechanism in the present utility model;

FIG. 9 is a schematic view of a secondary pawl assembly of the present utility model;

FIG. 10 is a schematic view of the sub-pawl assembly of the present utility model moved in tension;

FIG. 11 is a schematic view of a floor rail assembly in accordance with the present utility model;

in the figure: 10. a cylinder;

20. the floor rail assembly, 21, a mobile motor, 22 and a rack;

31. the first box body, 32, the first hydraulic cylinder;

40. The auxiliary claw mechanism 411, the support main board 412, the first support board 413, the second support board 414, the fixed column 415, the sliding rod 42, the first claw 43, the first support rod 44, the second support rod 45 and the oil cylinder pull rod;

51. the second box body, 52, a driving gear, 53 and a driving motor;

60. The main claw mechanism 61, the supporting main frame 62, the second claw 63, the supporting sliding block 64, the supporting roller 65, the driving disc 66, the arc-shaped groove 67, the second hydraulic cylinder 68 and the supporting main shaft.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Illustratively, the center of the main jaw mechanism 60 and the auxiliary jaw mechanism 40 is defined as the inner side, and the center of the main jaw mechanism 60 and the auxiliary jaw mechanism 40 is defined as the outer side;

as shown in fig. 1, 2 and 6 to 9, the clamping device for welding the cylindrical parts comprises:

a main claw mechanism 60 which is driven to rotate on the second casing 51 by a driving assembly and has a supporting main frame 61 and a plurality of groups of main claw assemblies;

A plurality of groups of main jaw assemblies are circumferentially mounted at the end face of the support main frame 61, each group of main jaw assemblies having a second jaw 62 which is hydraulically driven to move radially;

The auxiliary claw mechanism 40 is transversely arranged concentric with the main claw mechanism 60 and is rotatably mounted on the first box 31 towards the main claw assembly, and is provided with an oil cylinder pull rod 45, a support main plate 411 and a plurality of groups of auxiliary claw assemblies which are uniformly arranged circumferentially with the oil cylinder pull rod 45 as a center;

The first box 31 is driven to move transversely on the ground rail assembly 20, and each group of sub-claw assemblies has a first strut 43, a second strut 44, and a first claw 42 radially moving on the support main 411;

one end of the first supporting rod 43 is rotatably arranged on the supporting main board 411, the other end of the first supporting rod is in sliding connection with the first claw 42, one end of the second supporting rod 44 is rotatably arranged at the end head of the oil cylinder pull rod 45, and the other end of the second supporting rod is rotatably connected with the middle part of the first supporting rod 43;

The cylinder pull rod 45 is driven by hydraulic pressure to axially move, and when axially moving, the first claw 42 radially moves under the linkage action of the first supporting rod 43 and the second supporting rod 44;

Specifically, the main jaw mechanism 60 is used for clamping and driving rotation of the cylinder 10; the main support frame 61 is a main support structure, and is rotatably mounted on the second case 51 by a driving assembly, and may be formed of a pair of fixing plates arranged at a lateral interval, and the pair of fixing plates may be connected by a reinforcing rib or the like;

The main claw assembly is positioned on the end surface of the supporting main frame 61, and the end surface ensures flatness, for example, a supporting plate can be additionally arranged, and the supporting plate is arranged on the supporting main frame 61;

The auxiliary claw mechanism 40 is used for clamping the cylinder 10 and is transversely arranged concentric with the main claw mechanism 60, so that the axis of the cylinder 10 can be kept horizontal when the auxiliary claw mechanism 40 and the main claw mechanism 60 clamp the cylinder 10 together, the welding and positioning are convenient, and the large-scale cylinder 10 is required to be welded horizontally, so that inconvenient transportation when the cylinder 10 is vertically placed is avoided; the secondary pawl mechanism 40 is in passive rotation; the supporting main board 411 is a main supporting structure and can be directly rotatably installed on the first box 31 through a bearing;

The first claw 42 is radially moved and positioned on the supporting main board 411, for example, a linear sliding rail, a T-shaped sliding groove and the like are adopted to match and slide between the first claw 42 and the supporting main board 411;

As shown in fig. 9 and 10, the first strut 43 and the second strut 44 form a variable angle structure, so that when the cylinder pull rod 45 moves axially, the first strut 43 and the second strut 44 are driven to rotate, so as to drive the first claw 42 to move on the support main plate 411, for example, when the cylinder pull rod 45 moves towards the direction of the main claw mechanism 60, the included angle between the second strut 44 and the cylinder pull rod 45 is reduced, so that one end of the second strut 43 is pulled to rotate, and the other end slides on the first claw 42, so that the first claw 42 moves close to the axis of the cylinder pull rod 45, and correspondingly, when the cylinder pull rod 45 moves away from the direction of the main claw mechanism 60, the first claw 42 moves away from the axis of the cylinder pull rod 45;

as an embodiment, the structure of the main jaw mechanism 60 may be identical to that of the auxiliary jaw mechanism 40, for example, the second jaw 62 is driven to move radially by the linkage of the hydraulic driving main shaft and the strut assembly, and in this state, in order to ensure that the second jaw 62 is driven to move radially by hydraulic driving, the main jaw mechanism 60 may also rotate on the second housing 51, and the main jaw mechanism 60 further includes a rotary joint for inputting/outputting the hydraulic oil;

Preferably, the main claw assembly and the auxiliary claw assembly are four groups, namely, the four-claw self-centering hydraulic driving mode is adopted to clamp the cylinder 10;

When the clamping equipment for welding the cylinder parts is initially used, the distance between the main claw mechanism 60 and the auxiliary claw mechanism 40 is adjusted according to the length of the cylinder 10, namely the first box 31 drives the auxiliary claw mechanism 40 to transversely move on the ground rail assembly 20, so that the distance between the auxiliary claw mechanism 40 and the main claw mechanism 60 is larger than the length of the cylinder 10; in addition, the first claws 42 and the second claws 62 are correspondingly positioned at the inner side, that is, the diameter of the circle where the plurality of first claws 42 are positioned and the diameter of the circle where the plurality of second claws 62 are positioned are smaller than the inner diameter of the cylinder 10;

Hoisting the cylinder 10 to the clamping equipment by the hoisting equipment, wherein the axis of the cylinder 10 is horizontally arranged and is approximately consistent with the center of the main claw mechanism 60; the first casing 31 is laterally moved so that the respective first and second claws 42, 62 are located at the inner side of the cylinder 10;

the second claw 62 is hydraulically driven to radially move to tighten the cylinder 10, meanwhile, the oil cylinder pull rod 45 is hydraulically driven to axially move, and the first claw 42 is driven to radially move to tighten the cylinder 10 through the first supporting rod 43 and the second supporting rod 44, so that welding equipment can conveniently weld the cylinder 10; in the welding process, under the action of the driving assembly, the main claw mechanism 60 rotates on the second box body 51, so that the angle of the cylinder body 10 in the clamping device is adjusted to adapt to different welding angles;

When the welding is completed, the first claw 42 and the second claw 62 retract inwards, the auxiliary claw mechanism 40 is far away from the main claw mechanism 60, and the hoisting equipment re-hoistes the cylinder 10;

In the clamping equipment, the first clamping claw 42 and the second clamping claw 62 are radially moved in a hydraulic driving mode, so that the tensioning force is high, the clamping equipment is suitable for the cylinders 10 with different inner diameters, the real-time tensioning of the cylinders 10 can be realized in the welding process of the cylinders 10, the dimensional error of the cylinders 10 caused by thermal expansion and cold contraction is solved, namely, corresponding clamping claws are hydraulically controlled to radially displace according to the tiny change of the inner diameter of the welded cylinders 10, and the tensioning of the cylinders 10 is realized; in addition, the secondary jaw mechanism 40 moves laterally closer to or further from the primary jaw mechanism 60, and is adapted for use with cartridges 10 of different lengths.

As another example, the main jaw mechanism 60 further has a support main shaft 68 arranged concentrically with the support main frame 61;

A driving disc 65 which is hydraulically driven to rotate on a supporting main shaft 68 is arranged in the supporting main frame 61, and a plurality of groups of arc-shaped grooves 66 which are uniformly distributed in the circumferential direction are arranged on the driving disc 65; the arc track of the arc-shaped groove 66 gradually approaches the axis of the driving disk 65 from the peripheral side thereof;

the main jaw assembly also has a radially movable support slider 63, and a support roller 64 mounted on the support slider 63;

The second claw 62 is arranged on the supporting slide block 63, and the supporting roller 64 is movably positioned in the arc-shaped groove 66;

Specifically, a T-shaped groove with an inverted structure may be provided on the support main frame 61, and the support slider 63 is slidably located in the T-shaped groove;

The driving disk 65 is rotatably mounted on the supporting spindle 68 through a bearing, and is hydraulically driven to rotate to drive the supporting slide block 63 and the second claw 62 on the supporting slide block 63 to move radially, that is, the rotary motion is converted into linear motion;

When the driving disk 65 is driven to rotate by hydraulic pressure, the arc-shaped groove 66 on the driving disk 65 pushes the supporting roller 64 to enable the supporting roller 64 to move in the arc-shaped groove 66, as the arc-shaped track of the arc-shaped groove 66 gradually approaches the axis of the driving disk 65 from the peripheral side, and the supporting slide block 63 moves radially, under the pushing of the arc-shaped track of the arc-shaped groove 66, the supporting roller 64 can only move radially in a limiting manner, namely when the supporting roller 64 is positioned at the position of the arc-shaped groove 66 near the axis of the supporting spindle 68, the supporting slide block 63 moves inwards, and when the supporting roller 64 is positioned at the position of the arc-shaped groove 66 far from the axis of the supporting spindle 68, the supporting slide block 63 moves outwards;

the second claw 62 on the supporting slide block 63 correspondingly moves radially to clamp the cylinder 10;

In this embodiment, the driving disc 65 is hydraulically driven, and the second claw 62 is driven to radially move through the rotation of the driving disc 65, so as to realize the tensioning of the cylinder 10, and this mode can be applied to the cylinder 10 with larger inner diameter variation, and has large bearing capacity and keeps the stability of the tensioning force, so that the situation that the tensioning force is different and different hydraulic driving forces need to be matched due to angle variation when the first support rod 43 and the second support rod 44 are adopted to link the cylinders 10 with different inner diameters is avoided.

As shown in fig. 4 and 7, further, the supporting main shaft 68 has a hollow shaft structure, and a through hole communicated with the hollow is arranged at a radial position;

One end of a second hydraulic cylinder 67 is rotatably arranged on the supporting main frame 61, the telescopic end is rotatably connected with the peripheral side of the driving disc 65, and an oil pipe penetrates through the through hole, is led out along the supporting main shaft 68 in a hollow way and is connected with the rotary joint;

the first hydraulic cylinder 32 is fixedly arranged on the first box body 31, and the telescopic end is rotationally connected with the oil cylinder pull rod 45;

the controller controls the actions of the first hydraulic cylinder 32 and the second hydraulic cylinder 67 respectively;

Specifically, the supporting main shaft 68 is of a hollow shaft structure, and aims to enable an oil pipe of the second hydraulic cylinder 67 to pass through and be connected with the rotary joint, so that the second hydraulic cylinder 67 normally acts under the condition of 360-degree rotation of the main jaw mechanism 60; the second hydraulic cylinder 67 can be connected with the main support frame 61 and the driving disc 65 through the ear seat respectively;

The output end of the first hydraulic cylinder 32 can be rotationally connected with the oil cylinder pull rod 45 through a bearing, so that the rotation action can be performed under the condition that the oil cylinder pull rod 45 axially moves;

The controller controls the oil amounts of the first hydraulic cylinder 32 and the second hydraulic cylinder 67 to realize the telescopic actions and the hydraulic driving force of the first hydraulic cylinder 32 and the second hydraulic cylinder 67;

Preferably, pressure sensors for detecting the tension force can be arranged on the first claw 42 and the second claw 62, the pressure sensors transmit signals to a controller, and the controller receives the corresponding signals and then controls the actions of the first hydraulic cylinder 32 and the second hydraulic cylinder 67; the tensioning force can be quantized under the condition, so that the tensioning force of the main jaw mechanism 60 and the auxiliary jaw mechanism 40 to the cylinder body 10 is consistent, and the tensioning force can be fed back in real time in the welding process, so that the controller can conveniently control and adjust the corresponding hydraulic cylinders, and the excessive/insufficient tensioning force and uneven tensioning force are avoided.

As shown in fig. 3 to 5, further, the driving assembly has a driving motor 53 fixed to the second casing 51, and a driving gear 52 rotatably installed to the second casing 51 by a pivoting support;

The output end of the driving motor 53 is connected with a second gear, and the second gear is meshed with the driving gear 52;

the support main frame 61 is rotatably fitted to the drive gear 52 by a slewing bearing;

Specifically, when the main jaw mechanism 60 rotates, the driving motor 53 is started, and the driving gear 52 is driven to rotate on the second box 51 by the second gear, so that the rotation of the main jaw mechanism 60 is realized, and the adjustment of each circumferential angle can be ensured;

illustratively, the number of teeth of the drive gear 52 is greater than the second gear.

As shown in fig. 7 and 8, in a preferred embodiment, the first jaw 42 is provided with a radially disposed slide bar 415 at an end facing the main jaw assembly;

The auxiliary claw mechanism 40 further comprises a support plate assembly connected with the support main plate 411 through a fixed column 414, and a plurality of sliding grooves matched with the corresponding sliding rods 415 are arranged in the support plate assembly;

specifically, a sliding rod 415 sliding on the support plate assembly is arranged on the first claw 42, and the purpose of the sliding rod is to keep the stability of the movement and tensioning of the first claw 42; namely, the first clamping jaw 42 is of an elongated structure and is arranged along the central axis direction of the auxiliary jaw mechanism 40, so that the contact surface with the inner wall of the cylinder 10 can be increased, and when the first clamping jaw 42 moves radially, the moving and tensioning stability is ensured through the sliding contact between one end of the first clamping jaw 42 and the supporting main plate 411 and the sliding rod 415 at the other end of the first clamping jaw is in sliding contact with the supporting plate assembly;

The support plate assembly may include a first support plate 412 and a second support plate 413 stacked, that is, the first support plate 412 is connected with the support main plate 411 through fixing columns 414 at intervals, the second support plate 413 is fixed on the first support plate 412 through bolts, and grooves for limiting the slide rod 415 are formed on the first support plate 412 and the second support plate 413.

Further, an elastic pad and a pressure sensor are arranged at one end of the first claw 42 and the second claw 62 far away from the central axis;

The pressure sensor is connected with the controller;

As shown in fig. 6 and 11, further, the first box 31 is provided with a moving motor 21, and the ground rail assembly 20 is provided with a rack 22 which is transversely arranged;

The output end of the mobile motor 21 is connected with a first gear, and the first gear is in meshed connection with the rack 22;

Specifically, the first box 31 may be assembled with the floor rail assembly 20 through a slide rail; the moving motor 21 is started, and the first box 31 and the auxiliary claw mechanism 40 on the first box 31 transversely move on the ground rail assembly 20 through the engagement of the first gear and the rack 22.

When the clamping equipment for welding the cylinder parts is used, the lifting equipment lifts the cylinder 10 to the clamping equipment, the axis of the cylinder 10 is horizontally arranged, and the axis is approximately consistent with the center of the main claw mechanism 60;

the moving motor 21 is started, the first box 31 and the auxiliary claw mechanism 40 on the first box 31 transversely move on the ground rail assembly 20 through the engagement of the first gear and the rack 22, and finally the first claw 42 and the second claw 62 are correspondingly positioned on the inner side of the cylinder 10;

the first hydraulic cylinder 32 is started to drive the oil cylinder pull rod 45 to move circumferentially, at the moment, the first supporting rod 43 and the second supporting rod 44 are driven to rotate, the first supporting rod 43 slides on the first clamping jaw 42 to enable the first clamping jaw 42 to move radially on the supporting main plate 411, and the inner wall of the cylinder 10 is tightly expanded;

Correspondingly, the second hydraulic cylinder 67 is started, the arc-shaped groove 66 on the driving disc 65 pushes the supporting roller 64, so that the supporting roller 64 moves in the arc-shaped groove 66, the supporting roller 64 is limited to move radially under the pushing of the arc track of the arc-shaped groove 66, the supporting slide block 63 and the second claw 62 on the supporting slide block 63 correspondingly move radially, and the inner wall of the cylinder 10 is tensioned;

In the welding process, the driving motor 53 drives the driving gear 52 to rotate on the second box body 51 through the second gear, so that the main claw mechanism 60 rotates, and the adjustment of each circumferential angle can be ensured to be suitable for different welding angles;

In addition, the first hydraulic cylinder 32 and the second hydraulic cylinder 67 can adjust the tensioning force of the corresponding clamping jaws on the cylinder body 10 in real time according to the welding condition, so that the dimensional error of the cylinder body 10 caused by thermal expansion and cold contraction is solved, further, the first clamping jaw 42 and the second clamping jaw 62 are provided with pressure sensors for detecting the tensioning force, the controller receives corresponding signals and then controls the first hydraulic cylinder 32 and the second hydraulic cylinder 67 to act, the tensioning force can be quantized, the main jaw mechanism 60 and the auxiliary jaw mechanism 40 can ensure that the tensioning force of the cylinder body 10 is consistent, and in addition, real-time feedback can be realized in the welding process, the control adjustment of the corresponding hydraulic cylinders by the controller is facilitated, the overlarge/overlarge tensioning force and the uneven tensioning force are avoided.

When the welding is completed, the first hydraulic cylinder 32 and the second hydraulic cylinder 67 reversely move, so that the first claw 42 and the second claw 62 shrink inwards, the moving motor 21 reversely rotates, the auxiliary claw mechanism 40 on the first box body 31 is far away from the main claw mechanism 60, and the hoisting device re-hoists the cylinder body 10.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Claims (7)

1. Clamping equipment is used in welding of barrel class part, its characterized in that includes:

A main claw mechanism (60) which is driven to rotate on the second box body (51) by a driving component and is provided with a supporting main frame (61) and a plurality of groups of main claw components;

A plurality of groups of main claw assemblies are circumferentially arranged at the end face of the supporting main frame (61), and each group of main claw assemblies is provided with a second claw (62) which is driven by hydraulic pressure to radially move;

The auxiliary claw mechanism (40) is transversely arranged concentric with the main claw mechanism (60) and is rotationally arranged on the first box body (31) towards the main claw assembly, and is provided with an oil cylinder pull rod (45), a supporting main plate (411) and a plurality of groups of auxiliary claw assemblies which are uniformly arranged circumferentially and centered on the oil cylinder pull rod (45);

The first box body (31) is driven to transversely move on the ground rail assembly (20), and each group of auxiliary claw assemblies is provided with a first supporting rod (43), a second supporting rod (44) and a first claw (42) which radially moves on the supporting main plate (411);

One end of the first supporting rod (43) is rotatably arranged on the supporting main board (411), the other end of the first supporting rod is in sliding connection with the first clamping jaw (42), one end of the second supporting rod (44) is rotatably arranged at the end of the oil cylinder pull rod (45), and the other end of the second supporting rod is rotatably connected with the middle part of the first supporting rod (43); the oil cylinder pull rod (45) is driven by hydraulic pressure to axially move, and when the oil cylinder pull rod axially moves, the first claw (42) radially moves under the linkage action of the first supporting rod (43) and the second supporting rod (44).

2. Clamping device for welding cylindrical parts according to claim 1, characterized in that said main jaw mechanism (60) also has a supporting main shaft (68) arranged concentrically with the supporting main frame (61);

A driving disc (65) which is hydraulically driven to rotate on a supporting main shaft (68) is arranged in the supporting main frame (61), and a plurality of groups of arc-shaped grooves (66) which are uniformly arranged in the circumferential direction are arranged on the driving disc (65); the arc track of the arc-shaped groove (66) gradually approaches the axle center of the driving disc (65) from the peripheral side of the driving disc;

The main claw assembly is also provided with a supporting slide block (63) which moves radially and a supporting roller (64) which is arranged on the supporting slide block (63);

The second claw (62) is arranged on the supporting sliding block (63), and the supporting roller (64) is movably arranged in the arc-shaped groove (66).

3. The clamping device for welding the cylindrical parts according to claim 2, wherein the supporting main shaft (68) is of a hollow shaft structure, and a through hole communicated with the hollow is arranged at a radial position;

One end of a second hydraulic cylinder (67) is rotatably arranged on the supporting main frame (61), the telescopic end is rotatably connected with the peripheral side of the driving disc (65), and an oil pipe penetrates through the through hole, is led out along the hollow of the supporting main shaft (68) and is connected with the rotary joint;

The first hydraulic cylinder (32) is fixedly arranged on the first box body (31), and the telescopic end is rotationally connected with the oil cylinder pull rod (45);

The controller controls the operation of the first hydraulic cylinder (32) and the second hydraulic cylinder (67) respectively.

4. The clamping device for welding the cylindrical parts according to claim 3, wherein the first clamping jaw (42) and the second clamping jaw (62) are provided with pressure sensors for detecting tension force;

The pressure sensor transmits signals to the controller, and the controller receives corresponding signals and controls the actions of the first hydraulic cylinder (32) and the second hydraulic cylinder (67).

5. The clamping device for welding cylindrical parts according to any one of claims 1 to 4, wherein the driving assembly has a driving motor (53) fixed to the second case (51), and a driving gear (52) rotatably mounted to the second case (51) by a slewing bearing;

The output end of the driving motor (53) is connected with the second gear, and the second gear is meshed with the driving gear (52);

The support main frame (61) is rotatably mounted on the drive gear (52) by a slewing bearing.

6. Clamping device for welding cylindrical parts according to any of the claims 1 to 4, characterized in that said first jaw (42) is provided with a radially arranged slide bar (415) at the end facing the main jaw assembly;

The auxiliary claw mechanism (40) further comprises a support plate assembly connected with the support main plate (411) through a fixing column (414), and a plurality of sliding grooves matched with the corresponding sliding rods (415) are arranged in the support plate assembly.

7. The clamping device for welding cylinder parts according to claim 6, wherein the first box body (31) is assembled with the ground rail assembly (20) through a sliding rail, and is provided with a mobile motor (21), and the ground rail assembly (20) is provided with a rack (22) which is transversely arranged;

The output end of the moving motor (21) is connected with a first gear, and the first gear is meshed with the rack (22).