CN217191765U

CN217191765U - Stretching and straightening production equipment for arc-section rail transit aluminum profiles

Info

Publication number: CN217191765U
Application number: CN202122949819.0U
Authority: CN
Inventors: 文旭光; 谢刚; 杨博; 李建国; 包圣珠
Original assignee: Guangxi Xijiao Rail Transit Industry Technology R & D Co ltd
Current assignee: Guangxi Xijiao Rail Transit Industry Technology R & D Co ltd; Nanning University
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-08-16
Anticipated expiration: 2031-11-29

Abstract

The utility model provides a tensile aligning production facility of arc cross-section track traffic aluminium alloy, the position of keeping silent of automobile body, the lower part of keeping silent sets up the lower pincers body of liftable, the middle horizontal equipartition a plurality of movable blocks that can rise the activity of keeping silent, every activity block lower part sets up a wedge slider, the top inclined plane of wedge slider and the bottom inclined plane slidable connection of activity block, the side of wedge slider sets up the screw hole, can twist the collar screw rod in the screw hole, the collar screw rod is close to the collar closing cap of head end in the ring channel that the pincers body matches, the hexagonal wrench hole of head end exposes in the lower pincers side, but for free rotation state between collar screw rod and the lower pincers body. The utility model is suitable for a tensile aligning operation of big cross-section, big cambered surface, thin-walled aluminum alloy is used in all kinds of track traffic, overcomes the defect that the tensile both ends cambered surface of traditional big cambered surface aluminium alloy sinks to warp, improves the aluminium alloy yield greatly, improves tensile process work efficiency.

Description

Stretching and straightening production equipment for arc-section rail transit aluminum profiles

Technical Field

The utility model relates to a track traffic aluminium alloy production technical field specifically is a tensile aligning production facility of arc cross-section track traffic aluminium alloy.

Background

The rail transit car body is mainly made of aluminum alloy sections, the length of the aluminum sections is similar to that of a carriage, the length of the aluminum sections reaches tens of meters or even tens of meters, the aluminum sections with the cross sections of the car body are mainly aluminum sections with straight cross sections, such as side wall sections or floor sections, but at corners of the cross sections of the car body, such as corners of a car body floor and a side wall and corner positions of a side wall and a ceiling, the aluminum sections with large section shapes and radians are extruded and produced, and all the car body sections are finally assembled to form a whole carriage basic structure after being spliced on the side faces and subjected to friction stir welding.

The aluminum profile is produced through the steps of aluminum ingot heating, hot extrusion, online quenching, interruption, stretching and straightening, online sawing, online detection and the like, wherein in the stretching and straightening process, a profile stretcher is used for stretching and straightening the aluminum profile online, a headstock and a tailstock of the stretcher walk on a horizontal track, a jaw of the headstock and the tailstock is respectively provided with an upper clamp and a lower clamp, after the upper clamp and the lower clamp are closed to clamp two ends of the aluminum profile tightly, the tailstock is anchored, the headstock is drawn backwards and backwards, the aluminum profile is stretched in tension to generate plastic deformation, and the bent aluminum profile is straightened and corrected. Then the clamp is loosened, the aluminum profile is conveyed to the next procedure to saw and cut off the damaged part at the two ends of the aluminum profile, and finally, a straight and intact finished aluminum profile product is obtained

In practical production, the aluminum profile with the large section shape radian has the following difficulties in the stretching and straightening process: because section bar cross-section radian is big, the back is pressed from both sides tightly to flatten to the section bar with upper and lower clamp, and section bar tip cross-section takes place very big deformation, and the cambered surface sinks, causes the several meters section bar cambered surfaces that are close to the section bar tip to follow and sinks, finally saw cuts the section bar and needs to scrap the section bar that sinks at the process of sawing, causes very big material waste, leads to the fact section bar length not enough whole batch condemned condition even. In order to avoid the phenomenon, in the actual production, an operator usually prefabricates a profiling aluminum block which is similar to the section radian of the section, and in the stretching process, a tailstock and a headstock are respectively arranged by one person, and the profiling aluminum block is placed at the contact position of the section at the head end and the tail end of the section and a jaw, so that the cambered surface of the section is prevented from being flattened and collapsed by a clamp, the shape and position of the section of the middle section are kept from collapsing, and the sectional dimension requirement of the section is met. However, the above production method has disadvantages in that: 1. the production efficiency is extremely low, time and labor are wasted, and the working hours of mass production workers are consumed; 2. because the cambered surfaces of the cambered surface profiles are different, precast blocks in various shapes need to be precast in a manufacturing workshop, the positive production of other work types is greatly influenced, and the precast blocks are damaged or deformed after being used for a long time and need to be remanufactured; 3. a certain amount of aluminum ingots are needed to be consumed for prefabricating the profiling aluminum blocks, so that raw material waste is caused.

Disclosure of Invention

The utility model aims at providing a tensile aligning production facility of arc cross-section track traffic aluminium alloy is applicable to the tensile aligning operation of big cross-section, big cambered surface, thin-walled aluminium alloy for all kinds of track traffic, overcomes the defect that the tensile both ends cambered surface of the big cambered surface aluminium alloy of tradition sinks the deformation, improves the aluminium alloy yield greatly, improves tensile process work efficiency.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a lifting lower clamp body is arranged at the lower part of a jaw of the vehicle body, a plurality of movable clamp blocks capable of moving upwards are transversely and uniformly distributed in the middle of the lower clamp body, a wedge-shaped sliding block is arranged at the lower part of each movable clamp block, the top inclined plane of each wedge-shaped sliding block is slidably connected with the bottom inclined plane of each movable clamp block, a threaded hole is formed in the side surface of each wedge-shaped sliding block, a neck screw rod can be screwed into the threaded hole, a neck ring close to the head end of the neck screw rod is sealed in an annular groove matched with the lower clamp body, a hexagonal wrench hole at the head end is exposed on the side surface of the lower clamp body, and the neck screw rod and the lower clamp body can rotate freely;

before production, an operator supports and props up a lifting oil cylinder below a lower clamp body to the highest position, the end part of a ring neck screw rod is exposed, the ring neck screw rod is screwed by an inner hexagonal wrench, and the threaded end of the ring neck screw rod drives a wedge-shaped sliding block to retreat, so that each movable clamp block is respectively jacked until the movable clamp block is consistent with the section cambered surface of the section; namely, the presetting of the movable clamp block is completed, and then the clamp body is lowered to start production.

The jaw position of the trolley body, the upper part of the jaw is hinged with a finger clamp through a rotating shaft, an ear plate at the top of the trolley body is hinged with a hydraulic cylinder, the end part of a piston rod of the hydraulic cylinder is hinged with the upper end of a lifting frame, the middle part of the lifting frame is hinged on the rotating shaft, and the lower end of the lifting frame is provided with a lifting rod.

The finger clamp is formed by the parallelly connected articulated combination of a plurality of the same arc clamping jaw, and the clamping face of arc clamping jaw sets up the ratchet of falling, descends to press at the section bar upper surface by self action of gravity when the arc clamping jaw, and the section bar is at the in-process of taking the action out, and the arc clamping jaw produces the auto-lock effect, and the tensile force is big more, and auto-lock clamping-force is big more. The profile is stretched under the clamping action of the upper arc-shaped clamping jaw and the lower movable clamping block, when the stretching is finished, the piston rod of the hydraulic cylinder is ejected out, and the lifting rod lifts the clamping jaw group to realize loosening.

The position and the width of the finger clamp are matched with those of the movable clamp blocks. The upper and lower matched clamping positions can provide a more stable clamping effect.

The front end surface and the rear end surface of the movable clamp block are provided with vertical guide grooves, and the corresponding position of the lower clamp body is provided with a vertical guide convex edge. The vertical guide groove and the guide convex edge ensure that the movable clamp block moves up and down stably without dislocation.

Horizontal guide grooves are formed in two sides of the lower end face of the wedge-shaped sliding block, and horizontal guide convex edges are formed in the corresponding positions of the lower clamp body. The horizontal guide groove and the guide convex edge ensure that the wedge-shaped sliding block slides forwards and backwards stably without dislocation.

The upper end surface of the movable clamp block is provided with a ratchet. The ratchet is the pawl tooth, can provide better clamping force.

The upper end surface of the lower clamp body is provided with a ratchet. The ratchet is inverted ratchet teeth, and better clamping force can be provided.

The device using method comprises the following steps:

(1) according to the size of the arc-shaped section of the aluminum profile, the heights of a plurality of movable clamp blocks in the lower clamp body are adjusted to be matched with the arc surface of the aluminum profile;

(2) the aluminum profile is transversely conveyed to a station of a stretcher through a conveying belt, and the cambered surface of the aluminum profile is aligned to the position of the movable clamp block;

(3) when the lower clamp body rises, the finger clamp descends to clamp the aluminum profile, and stretching and straightening are carried out according to a preset stretching rate;

(4) after the stretching is finished, the finger clamp is lifted, the lower clamp body descends, and the aluminum profile is transversely conveyed to the next sawing process by the conveying belt.

The utility model has the advantages that:

(1) the utility model changes the current situation that the yield of collapse and deformation of the traditional large-cambered-surface aluminum profile for rail transit is low in the stretching and straightening process; meanwhile, the work and cost for manufacturing the profiling aluminum block are saved, and the production cost is greatly reduced.

(2) The utility model discloses changed the big cambered surface aluminium alloy of traditional track traffic and need consumeed the defect of a large amount of manpowers in tensile straightening process, reduced operative employee's intensity of labour by a wide margin, improved operative employee's production safety.

(3) The utility model discloses the section bar cross-section that can be applicable to various cambered surfaces can finely tune the promotion height of activity tong block according to different cross-section cambered surfaces, and accommodation is wide in range, and the simple operation is quick.

Description of the drawings:

FIG. 1 is a schematic view of the side view structure of the present invention;

FIG. 2 is a schematic view of the structure at the jaw of the present invention;

FIG. 3 is a view showing the external appearance of the lower clamp body;

FIG. 4 is a schematic view of the internal structure of the lower clamp body (the movable clamp body is not lifted);

FIG. 5 is a schematic view of the internal structure of the lower clamp body (with the movable clamp body lifted);

FIG. 6 is a connection diagram of a single set of movable clamp blocks, a wedge-shaped sliding block and a collar screw;

the components in the figure are identified as: 1. a body; 2. a hydraulic cylinder; 3. a lifting frame; 31. lifting the rod; 4. finger clamps; 5. a lower clamp body; 51. a movable clamp block; 52. a wedge-shaped slider; 53. a neck screw; 6. an aluminum profile.

Detailed Description

Example 1

A tensile straightening production facility of the arc section rail transit aluminium alloy, the position of the jaw of the car body 1, the inferior part of jaw sets up the lower clamp body 5 liftable, the middle horizontal equipartition 7 movable clamp blocks 51 that can rise of lower clamp body 5, every movable clamp block 51 inferior part sets up a wedge slide block 52, the top inclined plane of the wedge slide block 52 and bottom inclined plane of the movable clamp block 51 can be connected slidably, the side of the wedge slide block 52 sets up the threaded hole, can screw into the neck screw 53 in the threaded hole, the neck close to head end of the neck screw 53 is sealed and covered in the ring channel that the lower clamp body 5 matches, the hexagonal wrench hole of the head end is exposed on the side of lower clamp body 5, the neck screw 53 and lower clamp body 5 are the free rotation state;

the upper part of a jaw of the trolley body 1 is hinged with a finger clamp 4 through a rotating shaft, an ear plate at the top of the trolley body 1 is hinged with a hydraulic cylinder 2, the end part of a piston rod of the hydraulic cylinder 2 is hinged with the upper end of a lifting frame 3, the middle part of the lifting frame 3 is hinged on the rotating shaft, and the lower end of the lifting frame 3 is provided with a lifting rod 31;

the position and the width of the finger clamp 4 are matched with those of the movable clamp block 51;

vertical guide grooves are formed in the front end surface and the rear end surface of the movable clamp block 51, and vertical guide convex edges are formed in the corresponding positions of the lower clamp body 5;

horizontal guide grooves are formed in two sides of the lower end face of the wedge-shaped sliding block 52, and horizontal guide convex edges are formed in the corresponding positions of the lower clamp body 5;

the upper end surface of the movable clamp block 51 is provided with a ratchet;

the upper end surface of the lower clamp body 5 is provided with a ratchet.

Claims

1. The utility model provides a tensile straightening production facility of arc cross section track traffic aluminium alloy which characterized in that: the jaw position of automobile body (1), the lower part of keeping silent sets up the lower clamp body (5) of liftable, transversely equipartition is a plurality of movable vice blocks (51) that can rise the activity in the middle of lower clamp body (5), every movable vice block (51) lower part sets up a wedge slider (52), but the top inclined plane of wedge slider (52) and the bottom inclined plane sliding connection of movable vice block (51), the side of wedge slider (52) sets up the screw hole, can twist ring neck screw rod (53) in the screw hole, the ring neck closing cap that ring neck screw rod (53) are close to the head end is in the ring channel that lower clamp body (5) matches, the hexagonal wrench hole of head end exposes in lower clamp body (5) side, but the free rotation state between ring neck screw rod (53) and lower clamp body (5).

2. The stretching and straightening production equipment for the arc-shaped section rail transit aluminum profile according to claim 1 is characterized in that: the jaw position of automobile body (1), jaw upper portion is through articulated finger grip (4) of pivot, and the otic placode at automobile body (1) top articulates pneumatic cylinder (2), and the upper end of the articulated lifting frame (3) of the rod end portion of pneumatic cylinder (2), the middle part of lifting frame (3) articulates in the pivot, and the lower extreme of lifting frame (3) sets up lifts pole (31).

3. The stretching and straightening production equipment for the arc-shaped section rail transit aluminum profile according to claim 2 is characterized in that: the position and the width of the finger clamp (4) are matched with those of the movable clamp block (51).

4. The stretching and straightening production equipment for the arc-shaped section rail transit aluminum profile according to claim 1 is characterized in that: the front end surface and the rear end surface of the movable clamp block (51) are provided with vertical guide grooves, and the corresponding position of the lower clamp body (5) is provided with a vertical guide convex edge.

5. The stretching and straightening production equipment for the arc-shaped section rail transit aluminum profile according to claim 1 is characterized in that: horizontal guide grooves are formed in two sides of the lower end face of the wedge-shaped sliding block (52), and horizontal guide convex edges are formed in the corresponding positions of the lower clamp body (5).

6. The stretching and straightening production equipment for the arc-shaped section rail transit aluminum profile according to claim 1 is characterized in that: the upper end surface of the movable clamp block (51) is provided with a ratchet.

7. The stretching and straightening production equipment for the arc-shaped section rail transit aluminum profile according to claim 1 is characterized in that: the upper end surface of the lower clamp body (5) is provided with a ratchet.