CN219521061U - Truss arm crane balance beam and switching pulling plate welding positioner - Google Patents

Abstract

The utility model discloses a balance beam of a truss arm crane and a transfer pulling plate welding positioner, which comprises a first base, wherein a first bracket and a second bracket are respectively arranged on two opposite sides of the surface of the first base, one opposite sides of the brackets on two sides are respectively and rotatably connected with a centering device, the centering device comprises a second base, one opposite sides of the second bases on two sides are respectively and slidably connected with a centering mechanism, the centering mechanism comprises centering baffles which are slidably arranged on the second base, the centering baffles on two sides are oppositely arranged, telescopic mechanisms are arranged on the centering baffles, and the telescopic mechanisms on two sides are oppositely arranged. According to the utility model, through the two sets of centering devices with independent rotation and adjustable distance, the automatic clamping, positioning, overturning and displacement of the balance beam and the switching pulling plate are realized, the time for disassembling the workpiece and overturning is saved, and the overall working efficiency is improved; the clamping and positioning of various workpieces can be realized, various clamping tools do not need to be manufactured according to the workpieces, the production cost is reduced, and the time for replacing the tools is shortened.

Description

Truss arm crane balance beam and switching pulling plate welding positioner

Technical Field

The utility model relates to a welding positioner, in particular to a truss arm crane balance beam and a switching pulling plate welding positioner.

Background

In order to realize the robot automatic welding of complex workpieces, a positioner is required to clamp and adjust the welding angle of the workpieces. The balance beam and the switching pulling plate are important component parts of the inhaul cable of the truss arm crane and are used for adjusting the pitching angle of the main arm of the crane and adapting to different working ranges. These workpieces need to be manufactured by welding. However, due to different crane models, the size of the balance beam and the size of the transfer pulling plate are also different. Even on the different positions of a crane, the balance beams and the transfer pulling plates with different specifications are used, so that the whole balance beams and the transfer pulling plates have great changes in the aspects of overall length, section size, connection form of two ends, welding line position and the like, and great difficulty is brought to workpiece clamping.

Because the balance beam and the switching pulling plate are in a plurality of forms, according to the conventional thought, different types of tools are required to be installed on the positioner. In order to realize production needs, on one hand, the types of tools which are required to be designed and manufactured are multiple, the investment is large, and each time when products are switched, the tools are required to be replaced in advance, and the installation and adjustment time influences the overall production efficiency. On the other hand, because a part of welding seams can be shielded by the fixture, the robot cannot weld, so that all welding seams can be welded only by re-clamping after disassembly and overturning, labor is occupied, and production efficiency is influenced. In addition, the manner of fixing the parts using the tool is also complicated, and a pin, a stopper, a pressing plate, etc. are required to be manually operated.

In addition, the round holes at the two ends of the workpiece can be used for clamping and positioning, and the round holes with the variable diameter range are compatible with the round holes, so that the round holes are positioned in a taper pin mode. However, the positioning mode has poor adaptability, because on one hand, the diameter of the round hole is changed greatly, the height of the taper pin is required to be increased, but after the taper is increased, the taper pin cannot be compatible with a workpiece with a relatively narrow width, and because the top ends of the taper pins interfere with each other during centering and clamping. Although the taper pin can be replaced according to different types of workpieces, the taper pin also brings additional manual operation cost, and the workpiece or equipment can be damaged due to the replacement error.

Therefore, the existing fixture cannot realize automatic operation in the process of clamping and overturning workpieces, and different fixtures are required to be replaced for different types of workpieces.

Disclosure of Invention

The utility model aims to: the utility model aims to provide a girder arm crane balance beam and transfer pulling plate welding positioner, which realizes automatic clamping, positioning and turning displacement of the balance beam and the transfer pulling plate through two sets of centering devices with independent rotation and adjustable distance, and has good adaptability to workpieces in different forms without replacing specific parts.

The technical scheme is as follows: the utility model comprises a first base, wherein a first bracket and a second bracket are respectively arranged on two opposite sides of the surface of the first base, one opposite sides of the brackets on two sides are respectively connected with a centering device in a rotating way, the centering device comprises a second base, one opposite sides of the second bases on two sides are respectively connected with a centering mechanism in a sliding way, the centering mechanism comprises centering baffle plates which are arranged on the second base in a sliding way, the centering baffle plates on two sides are arranged oppositely, the centering baffle plates are provided with telescopic mechanisms, and the telescopic mechanisms on two sides are arranged oppositely.

The telescopic mechanism comprises a driving mechanism, the driving mechanisms on two sides are respectively arranged at one ends of the centering baffles on two sides, which are far away from each other, the extending ends of the driving mechanism are provided with telescopic structures, and the telescopic structures on two sides are arranged relatively.

The telescopic structure adopts a rod structure, the contact part of the head of the rod and the workpiece is a plane or a hollow surface, the circumferential dimension of the contact part of the rod structure and the workpiece is smaller, the middle part is in smooth transition, and the circumferential dimension of the guide part is larger.

At least one of the first bracket and the second bracket is a movable bracket.

The first base is provided with a first guide rail, and the movable support slides on the first guide rail.

The second base is provided with a second guide rail, and the second guide rail is connected with a centering baffle in a sliding manner.

And one side of the second base is provided with a transmission mechanism, and the transmission mechanism is connected with the centering baffle plate.

The first support and the second support are rotatably connected with a turntable, and the turntable is rotatably connected with a centering device.

And a guide sleeve is arranged on the outer side of the telescopic structure.

The beneficial effects are that: according to the utility model, through the two sets of centering devices with independent rotation and adjustable distance, the automatic clamping, positioning and turning and shifting of the balance beam and the switching pulling plate are realized, the turning and shifting can be realized while clamping, the time for disassembling a workpiece and turning is saved, and the overall working efficiency is improved; the clamping and positioning of various workpieces can be realized, various clamping tools do not need to be manufactured according to the workpieces, the production cost is reduced, and the time for replacing the tools is shortened.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of a fixture adapter plate of the present utility model;

FIG. 3 is a schematic view of a fixture adapter plate of the present utility model;

FIG. 4 is a schematic view of a fixture adapter tie plate of the present utility model;

FIG. 5 is a schematic view of a fixture balance beam of the positioner of the present utility model;

FIG. 6 is a schematic view of a positioner of the present utility model clamping parts of different widths, wherein (a) is clamping parts of a wide dimension; (b) clamping narrow-scale parts;

FIG. 7 is a schematic view of a centering device of the present utility model using chain drive, wherein (a) is a schematic view of an initial position; (b) is a schematic diagram of centering; (c) is a cross-sectional view of the finger line of (a); (d) is a cross-sectional view of the finger line shown in (b);

FIG. 8 is a schematic view of a centering device of the present utility model using a linkage, wherein (a) is a schematic view of an initial position; (b) is a schematic diagram of centering; (c) is a cross-sectional view of the finger line of (a); (d) is a cross-sectional view of the finger line shown in (b);

FIG. 9 is a schematic view of a centering device according to the present utility model when driven by a rack and pinion, wherein (a) is a schematic view of an initial position; (b) is a schematic diagram of centering; (c) is a cross-sectional view of the finger line of (a); (d) is a cross-sectional view of the finger line shown in (b).

Detailed Description

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

As shown in fig. 1, the utility model comprises a first base 5, wherein a fixed bracket 1 and a movable bracket 3 are respectively arranged on two opposite sides of the upper surface of the first base 5, the movable bracket 3 slides on a first guide rail 7 arranged on the upper surface of the first base 5, a turntable 21 is respectively and rotatably connected to one opposite sides of the fixed bracket 1 and the movable bracket 3, and the turntable 21 is driven by a motor reducer and a gear and can rotate independently or synchronously. The centers of the turntables 21 on the two sides are positioned on the same straight line, and the turntables 21 are rotatably connected with a centering device. The centering device comprises a second base 22, wherein the opposite surfaces of the second bases 22 on two sides are respectively provided with a second guide rail 27, and the second guide rails 27 are connected with a centering mechanism in a sliding way. A transmission mechanism 26 is arranged on one side of the second base 22, the transmission mechanism 26 adopts a motor reducer to drive forward and reverse screw rods, centering baffles 23 are respectively arranged on the forward and reverse screw rods of the forward and reverse screw rods, the forward and reverse screw rods are driven by a motor to rotate, and then the centering baffles 23 on two sides are driven to slide on a second guide rail 27 relatively or far away from each other. The driving mechanism 24 is respectively installed to the one end that both sides centering baffle 23 kept away from each other, and both sides driving mechanism 24 set up relatively, and extending end all installs extending structure 25, and extending structure 25 outside cover has the guide pin bushing. The telescopic structure 25 is driven to extend or retract by the driving mechanism 24, and then workpieces with different widths are clamped by the telescopic structures 25 which are oppositely arranged.

The bottom of the movable support 3 is provided with a gear, the upper surface of the first base 5 is provided with a rack 6, and the gear is meshed with the rack 6 on the first base 5 through a motor driving gear, so that the movable support 3 slides along the first guide rail 7, and the moving stroke meets the length change range of a workpiece.

The driving mechanism adopts an air cylinder or a motor speed reducer, and when the driving mechanism adopts the air cylinder for driving, the extending end of the driving mechanism is connected with a telescopic structure, and the telescopic mode is a pneumatic compression retraction mode; when the motor speed reducer is used for driving, the motor speed reducer performs telescopic adjustment in a mode of a gear rack, a lead screw or a synchronous belt and the like.

The telescopic structure 25 adopts a rod structure, the contact part of the head of the rod and the workpiece is a plane or a hollow surface, and the plane can be processed into a round, diamond or special-shaped structure. In order to ensure the structural strength, the circumferential dimensions of the rod structure and the workpiece contact part are small, the middle part is smoothly transited, and the circumferential dimensions of the guide part are large and move in the guide sleeve.

In this embodiment, the contact portion between the head of the rod and the workpiece is cylindrical, that is, a cylindrical pin is taken as an example for illustration. To ensure structural strength, the contact portion of the cylindrical pin and the workpiece is in a thin cylindrical shape, the middle part is in a conical shape, and the guide part is in a cylindrical shape with a larger diameter and moves in the guide sleeve, as shown in fig. 6. The cylindrical pin is a main part inserted into the round hole of the workpiece to play a role in positioning. When clamping the part with larger width, the part extends out completely, so that the positioning effect is ensured. For parts with smaller widths, the cylindrical pins retract by corresponding distances according to the widths of the workpieces, and the positioning effect can be realized as well. The telescoping action of the cylindrical pin is automatically completed by the equipment without manual intervention.

The workpiece fixing mode comprises the following steps: round holes at two ends of a workpiece are utilized, cylindrical pins are inserted into the round holes, and the fixing of the workpiece in the length direction is realized in a mode of tensioning the round pins towards the two ends. And then the baffle plate is utilized to realize the fixation of the workpiece in the width direction. Thereby realizing the complete positioning of the workpiece. When other forms of rod structures are used, the functions and principles are the same as those of the cylindrical pins, and repeated descriptions are omitted here.

As shown in fig. 2 to 5, when the transfer pulling plates or the balance beams of different lengths are clamped, the position of the movable bracket 3 is adjusted to adapt to workpieces of different lengths. According to the angles of the balance beam and the axes of the holes at the two ends of the transfer pulling plate, the positioner can automatically adjust the axis angle of the centering device so as to adapt to workpieces with different angle types, as shown in fig. 2 and 3. The two sets of centering devices can rotate in an axis parallel mode or can rotate at 90 degrees or other specific angles, so that compatibility of the positioner is improved. The baffle spacing of the centering mechanism can be automatically adjusted to adapt to workpieces with different widths, as shown in fig. 6, when wider parts are clamped, the cylindrical pins extend completely and extend into the round holes of the workpieces to play a role in hooking the workpieces. When clamping a narrower workpiece, particularly a workpiece having a width less than the sum of the lengths of the protruding baffles of the two end cylindrical pins, the two cylindrical pins are already in contact when the baffles contact the sides of the workpiece. To achieve the centering effect of the baffles, the baffles may continue to move to the set width. In the process, the centering driving force of the baffle is larger than the thrust of the cylinder connected with the cylindrical pin, and the cylindrical pin is pressed and retreated along with the centering movement of the baffle, so that the centering baffle can be tightly attached to a workpiece.

As an alternative to the present utility model, the fixed support 1 may also be a movable support, the structure and movement of which are the same as those described above, and the rest of which are unchanged, and the movement of the movable supports on both sides is used to clamp workpieces of different lengths.

As an alternative to the present utility model, the moving manner of the moving bracket may also be a manner of driving the screw nut by a motor, or a manner of driving the timing belt, the chain, etc. by a motor reducer, which are conventional driving manners, and will not be repeated here.

The centering device provided by the utility model is used for centering by driving the forward and reverse lead screws through a motor, and also can be used for centering through a gear rack, a chain or a connecting rod. When the gear and rack are adopted for centering, as shown in fig. 9, the centering mechanisms on two sides are respectively connected with the upper rack and the lower rack, the upper rack and the lower rack are meshed with the central gear, and when the gears rotate in the illustrated directions, the racks on two sides move in opposite directions to drive the centering mechanisms to move towards the center, so that centering is realized. When the chain is adopted for centering, as shown in fig. 7, the centering mechanisms on two sides are respectively connected with the upper chain and the lower chain, and when the chain wheel rotates in the direction shown in the drawing, the upper chain and the lower chain move in opposite directions to drive the centering mechanism to move towards the center, so that centering is realized. When the connecting rod is adopted for centering, as shown in fig. 8, the centering mechanisms on two sides are respectively connected with the connecting rod mechanisms, and when the center of the connecting rod rotates in the direction shown in the drawing, the centering mechanisms are driven to move towards the center, so that centering is realized. The driving modes are all motor driving.

Claims (9)

1. The utility model provides a truss arm hoist compensating beam and switching arm-tie positioner, its characterized in that, includes first base, first support and second support are installed respectively to the both sides that first base surface is relative, and the relative one side of both sides support rotates respectively and is connected with centering device, centering device includes the second base, and the equal sliding connection of the relative one side of both sides second base has centering mechanism, and centering mechanism is including the centering baffle of sliding setting on the second base, and the centering baffle of both sides is relative to be set up, is equipped with telescopic machanism on the centering baffle, and telescopic machanism of both sides is relative to be set up.

2. The truss arm crane balance beam and switching pulling plate welding positioner according to claim 1, wherein the telescopic mechanism comprises a driving mechanism, the driving mechanisms on two sides are respectively arranged at one ends of the centering baffles on two sides, which are far away from each other, the extending ends of the driving mechanisms are provided with telescopic structures, and the telescopic structures on two sides are arranged oppositely.

3. The balance beam and switching pulling plate welding positioner of the truss arm crane according to claim 2, wherein the telescopic structure adopts a rod structure, the contact part of the head of the rod and the workpiece is a plane or a hollow surface, the circumferential dimension of the contact part of the rod structure and the workpiece is smaller, the middle part is in smooth transition, and the circumferential dimension of the guide part is larger.

4. The girder and adapter plate welding positioner according to claim 3, wherein at least one of the first and second brackets is a movable bracket.

5. The girder and adapter plate welding positioner for a girder arm crane according to claim 4, wherein the first base is provided with a first guide rail, and the movable support slides on the first guide rail.

6. The balance beam and transfer arm tooling welding positioner of claim 1 or 5, wherein a second guide rail is provided on the second base, and a centering baffle is slidingly connected to the second guide rail.

7. The girder and adapter plate welding positioner for a girder arm crane according to claim 6, wherein a transmission mechanism is installed at one side of the second base, and the transmission mechanism is connected with the centering baffle.

8. The girder and transfer pulling plate welding positioner for the girder arm crane according to claim 4, wherein the first bracket and the second bracket are rotatably connected with a turntable, and the turntable is rotatably connected with a centering device.

9. The balance beam and transfer pulling plate welding positioner of the truss arm crane according to claim 2, wherein the outer side of the telescopic structure is provided with a guide sleeve.