A stepped linear cable tray automatic welding system and process

Abstract

The present invention discloses an automatic welding system for a stepped linear cable tray, comprising a crossarm welding device, a tray side plate linear guide device, a first linear tray side plate, a second linear tray side plate and a plurality of tray crossarms; the crossarm welding device corresponds to the tray side plate linear guide device; the tray side plate linear guide device can guide the first linear tray side plate and the second linear tray side plate which are symmetrically parallel and side by side along the length extension direction, so that the crossarm welding device can be connected to the first linear tray side plate and the second linear tray side plate guided by the tray side plate linear guide device; the consistency of welding is guaranteed, and the problem of low consistency of manual welding is avoided.

Description

Technical Field

[0001] The invention belongs to the field of ladder bridge welding. Background Art

[0002] Straight ladder bridge Figure 1 For the convenience of expression, Figure 1 The straight ladder bridge is shorter in the middle. Generally, the straight ladder bridge is longer than Figure 1 The straight stepped bridge shown in the figure; due to the large number of cross arms on the straight stepped bridge, it is not only necessary to manually weld them one by one during welding, but also to ensure the consistency of the spacing between two adjacent cross arms, which makes the welding process cumbersome and the consistency cannot be guaranteed. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an automatic welding system and process for a stepped linear cable tray, which ensures the consistency of welding and avoids the problem of low consistency of manual welding.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides an automatic welding system for a stepped linear cable tray, comprising a cross-arm welding device, a tray side plate linear guide device, a first linear tray side plate, a second linear tray side plate and a plurality of tray cross-arms; the cross-arm welding device corresponds to the tray side plate linear guide device; the tray side plate linear guide device can guide the first linear tray side plate and the second linear tray side plate which are symmetrically parallel and parallel to each other along the length extension direction, so that the cross-arm welding device can be connected to the first linear tray side plate and the second linear tray side plate guided by the tray side plate linear guide device;

[0005] On the basis of being guided by the bridge side plate linear guide device, the first linear bridge frame side plate and the second linear bridge frame side plate, which are symmetrically arranged in parallel, can vertically place a plurality of bridge frame cross arms to be welded with the groove bodies facing upwards between the first linear bridge frame side plate and the second linear bridge frame side plate, and the two ends of each bridge frame cross arm are respectively supported by the linear horizontal flanges at the lower parts of the first linear bridge frame side plate and the second linear bridge frame side plate;

[0006] The cross arm welding device can slide a plurality of bridge frame cross arms one by one to a predetermined welding position, and weld a plurality of bridge frame cross arms one by one between the first linear bridge frame side plate and the second linear bridge frame side plate that have been butted together.

[0007] Furthermore, the cross-arm welding device includes a fixed vertical arm, two groups of first bridge frame side plate drive units and two groups of second bridge frame side plate drive units; a number of transverse cantilever brackets are fixed at the lower end of the vertical arm; the two groups of first bridge frame side plate drive units and the two groups of second bridge frame side plate drive units are respectively connected to the end of each of the transverse cantilever brackets.

[0008] Furthermore, the first bridge frame side plate driving unit and the second bridge frame side plate driving unit both include a support, a driving motor, a driving groove wheel and a clamping wheel; the support is fixedly connected to the transverse cantilever bracket, the housing of the driving motor is fixedly connected to the support, the driving groove wheel is vertically arranged parallel to the clamping wheel, the output end of the driving motor is driven and connected to the driving groove wheel, and the wheel axle of the clamping wheel is rotatably mounted on the support through a bearing.

[0009] Furthermore, the crossarm welding device is based on the first linear bridge frame side plate and the second linear bridge frame side plate that have been docked from the bridge frame side plate linear guide device: the clamping wheels and the driving groove wheels of each first bridge frame side plate driving unit are rolled on the inner and outer sides of the first linear bridge frame side plate, and the first linear bridge frame side plate is actively displaced along its own linear direction under the active rotation drive of the driving groove wheels on the two groups of first bridge frame side plate driving units; the clamping wheels and the driving groove wheels of each second bridge frame side plate driving unit are rolled on the inner and outer sides of the second linear bridge frame side plate, and the second linear bridge frame side plate is actively displaced along its own linear direction under the active rotation drive of the driving groove wheels on the two groups of second bridge frame side plate driving units.

[0010] Furthermore, a first welder and a second welder are symmetrically fixedly installed under each of the transverse cantilever brackets; the spray welding guns of the first welder and the second welder are respectively recorded as the first spray welding gun and the second spray welding gun; the first spray welding gun and the second spray welding gun are arranged under the inclined slot in an "eight" symmetrical shape; the cross arm welding device has been docked to the first linear bridge frame side plate and the second linear bridge frame side plate guided by the linear guide device of the bridge frame side plate: both ends of each bridge frame cross arm respectively form a gap to be welded with the inner side surfaces of the first linear bridge frame side plate and the second linear bridge frame side plate; the gap to be welded at both ends of the bridge frame cross arm can be synchronously translated with the first linear bridge frame side plate and the second linear bridge frame side plate to the ends of the first spray welding gun and the second spray welding gun respectively.

[0011] Furthermore, at least one pair of electric telescoping devices with telescopic rods facing vertically downwards are fixedly installed below the transverse cantilever bracket through a telescoping device bracket; the telescopic rods are located on the side of the first welder and the second welder close to the linear guide device of the bridge side plate; the width of the groove body along the length direction of each bridge cross arm is greater than the outer diameter of the lower end of the telescopic rod.

[0012] Furthermore, a pair of lifters are installed on one side of the vertical arm away from the bridge frame side plate linear guide device through a lifter bracket, and the lifting part of the lifter is fixedly connected to a horizontal lifting baffle.

[0013] Further, a welding method of a stepped linear cable tray automatic welding system is characterized in that: step one, horizontally juxtapose the first linear cable tray side plate and the second linear cable tray side plate, and arrange the first linear cable tray side plate and the second linear cable tray side plate with grooves opposite to each other;

[0014] Step 2: The first linear bridge frame side plate and the second linear bridge frame side plate are pushed onto the bridge frame side plate linear guide device along the length direction, so that the second linear bridge frame side plate can only be displaced along its own length direction;

[0015] Step 3: On the side of the bridge frame side plate linear guide device close to the cross arm welding device, a plurality of bridge frame cross arms to be welded with the grooves facing upwards are vertically placed between the first linear bridge frame side plate and the second linear bridge frame side plate, so that the plurality of bridge frame cross arms are arranged parallel to each other and closely adjacent to each other; the two ends of each bridge frame cross arm are respectively supported by the linear horizontal flanges at the lower part of the first linear bridge frame side plate and the second linear bridge frame side plate; and gaps to be welded are formed between the two ends of each bridge frame cross arm and the inner side surfaces of the first linear bridge frame side plate and the second linear bridge frame side plate;

[0016] Step 4, the first linear bridge frame side plate and the second linear bridge frame side plate are synchronously pushed and displaced in the direction close to the cross arm welding device, and a plurality of bridge frame cross arms vertically placed between the first linear bridge frame side plate and the second linear bridge frame side plate are displaced accordingly, until the cross arm welding device is docked with the first linear bridge frame side plate and the second linear bridge frame side plate guided in a linear direction from the bridge frame side plate linear guide device: after docking, the clamping wheels and the driving groove wheels on each first bridge frame side plate driving unit are rolled and clamped on the inner and outer sides of the first linear bridge frame side plate; the clamping wheels and the driving groove wheels on each second bridge frame side plate driving unit are rolled and clamped on the inner and outer sides of the second linear bridge frame side plate; the transverse lifting baffle plate simultaneously limits contact with the ends of the first linear bridge frame side plate and the second linear bridge frame side plate;

[0017] Step 5, controlling the transverse lifting baffle to rise to a level higher than the first linear bridge side plate and the second linear bridge side plate;

[0018] Step 6: synchronously control the driving groove wheels on the two groups of first bridge frame side plate driving units and the driving groove wheels on the two groups of second bridge frame side plate driving units to rotate synchronously, and the first linear bridge frame side plate and the second linear bridge frame side plate synchronously continue to synchronously and actively displace along their own linear directions;

[0019] In the process from "step four" to "step six", when a plurality of bridge crossarms follow the synchronous displacement of the first linear bridge side plate and the second linear bridge side plate, when the first bridge crossarm among the plurality of bridge crossarms reaches directly below a pair of electric telescopic devices, the telescopic rods of the pair of electric telescopic devices immediately extend downward into the groove body of the first bridge crossarm. Under the constraint of the lower end of the telescopic rod, the first bridge crossarm is prevented from synchronously moving with the first linear bridge side plate and the second linear bridge side plate. The remaining bridge crossarms also pause their translation under the restriction of the first bridge crossarm. At the same time, under the joint drive of the two groups of first bridge side plate driving units and the two groups of second bridge side plate driving units, the first linear bridge side plate and the second linear bridge side plate continue to slowly advance along the length direction; thereby causing the bridge crossarm to slide relative to the first linear bridge side plate and the second linear bridge side plate. When the first bridge crossarm is relative to the first linear bridge side plate and the second linear bridge When the side panel slides to the target welding position, the telescopic rod is immediately retracted upwards, so that each bridge crossarm is synchronously displaced with the first linear bridge side panel and the second linear bridge side panel again. When the second bridge crossarm among the several bridge crossarms reaches directly below a pair of electric telescopic devices, the telescopic rods of the pair of electric telescopic devices immediately extend downwards into the groove body of the second bridge crossarm. Under the constraint of the lower end of the telescopic rod, the second bridge crossarm is prevented from synchronously moving with the first linear bridge side panel and the second linear bridge side panel. At the same time, the first bridge crossarm continues to move synchronously with the first linear bridge side panel and the second linear bridge side panel, thereby realizing the separation of the first bridge crossarm and the second bridge crossarm. When the gaps to be welded at both ends of the first bridge crossarm are respectively translated to the corresponding ends of the first spray welding gun and the second spray welding gun, the first spray welding gun and the second spray welding gun automatically spray a predetermined amount of welding liquid to weld the gaps to be welded at both ends of the first bridge crossarm.

[0020] Beneficial effect: The present invention can realize the welding of several bridge cross arms that are evenly distributed or randomly distributed between the first linear bridge side plate and the second linear bridge side plate. In this solution, once the cross arm welding device can connect to the first linear bridge side plate and the second linear bridge side plate guided by the bridge side plate linear guide device, the subsequent processes are fully automated, the consistency of the welding is guaranteed, and the problem of low consistency of manual welding is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is the welding process diagram of the stepped bridge in this scheme;

[0022] Figure 2 It is a schematic diagram of the process from "step one" to "step three";

[0023] Figure 3 It is a schematic diagram of the process from "step 4" to "step 6";

[0024] Figure 4 This is the top view at "Step 4";

[0025] Figure 5 For attachment Figure 4 An enlarged schematic diagram of the mark 8;

[0026] Figure 6 It is the top view structure of the cross arm welding device;

[0027] Figure 7 This is a three-dimensional diagram of the cross-arm welding device. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] As attached Figures 1 to 7 The ladder-type linear cable tray automatic welding system shown in the figure comprises a cross arm welding device 8, a bridge frame side plate linear guide device 50, a first linear bridge frame side plate 6a, a second linear bridge frame side plate 6b and a plurality of bridge frame cross arms 7; the cross arm welding device 8 corresponds to the bridge frame side plate linear guide device 50;

[0030] The bridge frame side plate linear guide device 50 can guide the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b which are symmetrically parallel and arranged along the length extension direction, so that the cross arm welding device 8 can be connected to the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b guided by the bridge frame side plate linear guide device 50; there are linear horizontal flanges 30 on the side where the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b are close to each other at the lower part.

[0031] The first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b are symmetrically arranged in parallel and guided by the bridge frame side plate linear guide device 50. A number of bridge frame cross arms 7 with upward grooves 19 to be welded are vertically placed between the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b, and the two ends of each bridge frame cross arm 7 are respectively supported by the linear horizontal flanges 30 at the lower part of the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b; and gaps 20 to be welded are formed between the two ends of each bridge frame cross arm 7 and the inner side surfaces of the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b.

[0032] The cross arm welding device 8 can slide a plurality of bridge cross arms 7 one by one to a predetermined welding position, and weld a plurality of bridge cross arms 7 one by one between the first linear bridge side plate 6a and the second linear bridge side plate 6b that have been connected.

[0033] like Figure 2 and 4As shown, the bridge side plate linear guide device 50 includes a horizontal guide platform 3, on which are arranged at least three groups of first roller guide units 2a distributed along a linear array and at least three groups of second roller guide units 2b distributed along a linear array.

[0034] The first roller guide unit 2a and the second roller guide unit 2b are symmetrical to each other, and both include an inner constraint wheel 5 and an outer constraint groove wheel 4 rotatably mounted on a vertical fixed shaft through bearings.

[0035] The inner constraint wheel 5 and the outer constraint groove wheel 4 on each first roller guide unit 2a are rolled and clamped on the inner and outer sides of the first linear bridge side plate 6a; so that the first linear bridge side plate 6a can only move along its own length direction under the common constraint of the three groups of first roller guide units 2a;

[0036] The inner constraint wheel 5 and the outer constraint groove wheel 4 on each second roller guide unit 2b are rolled and clamped on the inner and outer sides of the second linear bridge side plate 6b; thereby, the second linear bridge side plate 6b can only move along its own length direction under the common constraint of the three groups of second roller guide units 2b.

[0037] like Figure 5 , 6 , 7, the cross arm welding device 8 includes a fixed vertical arm 22, two groups of first bridge frame side plate drive units 1a and two groups of second bridge frame side plate drive units 1b; a plurality of radial transverse cantilever brackets 13 are fixed to the lower end of the vertical arm 22; the two groups of first bridge frame side plate drive units 1a and the two groups of second bridge frame side plate drive units 1b are respectively connected to the ends of each transverse cantilever bracket 13; the two groups of first bridge frame side plate drive units 1a and the two groups of second bridge frame side plate drive units 1b are symmetrical to each other; the first bridge frame side plate drive unit 1a and the second bridge frame side plate drive unit 1b each include a support 14, a drive motor 15, a drive groove wheel 16 and a clamping wheel 17; the support 14 is fixedly connected to the transverse cantilever bracket 13, the casing of the drive motor 15 is fixedly connected to the support 14, the drive groove wheel 16 is vertically arranged parallel to the clamping wheel 17, the output end of the drive motor 15 is drivingly connected to the drive groove wheel 16, and the wheel shaft 24 of the clamping wheel 17 is rotatably mounted on the support 14 through a bearing.

[0038] The cross arm welding device 8 is connected to the first straight bridge frame side plate 6a and the second straight bridge frame side plate 6b guided by the bridge frame side plate linear guide device 50:

[0039] The clamping wheels 17 and driving groove wheels 16 on each first bridge frame side plate driving unit 1a are rolled and clamped on the inner and outer sides of the first linear bridge frame side plate 6a. The first linear bridge frame side plate 6a is actively displaced along its own linear direction under the active rotation drive of the driving groove wheels 16 on the two groups of first bridge frame side plate driving units 1a.

[0040] The clamping wheels 17 and driving groove wheels 16 on each second bridge side plate driving unit 1b are rolled and clamped on the inner and outer sides of the second linear bridge side plate 6b. The second linear bridge side plate 6b is actively displaced along its own linear direction under the active rotation drive of the driving groove wheels 16 on the two groups of second bridge side plate driving units 1b.

[0041] A first welder 10a and a second welder 10b are symmetrically fixedly installed below the transverse cantilever bracket 13; the spray welding guns of the first welder 10a and the second welder 10b are respectively recorded as a first spray welding gun 11a and a second spray welding gun 11b; the first spray welding gun 11a and the second spray welding gun 11b are arranged under the inclined slot and in an "eight" symmetrical shape;

[0042] The cross arm welding device 8 is connected to the first straight bridge frame side plate 6a and the second straight bridge frame side plate 6b guided by the bridge frame side plate linear guide device 50:

[0043] A number of bridge cross arms 7 to be welded with the trough bodies 19 facing upwards can be placed vertically between the first linear bridge side plate 6a and the second linear bridge side plate 6b, and the two ends of each bridge cross arm 7 are supported by the straight horizontal flanges 30 at the lower part of the first linear bridge side plate 6a and the second linear bridge side plate 6b respectively; the two ends of each bridge cross arm 7 form a gap 20 to be welded between the inner side surfaces of the first linear bridge side plate 6a and the second linear bridge side plate 6b respectively; the gap 20 to be welded at the two ends of the bridge cross arm 7 can be synchronously translated with the first linear bridge side plate 6a and the second linear bridge side plate 6b to the ends of the corresponding first spray welding gun 11a and the second spray welding gun 11b respectively.

[0044] At least one pair of electric telescoping devices 12 with telescopic rods 18 facing vertically downward is fixedly installed below the transverse cantilever bracket 13 through the telescoping device bracket 23; the telescopic rod 18 is located on the side of the first welder 10a and the second welder 10b close to the linear guide device 50 of the bridge frame side plate; the width of the groove 19 along the length direction of each bridge frame crossarm 7 is greater than the outer diameter of the lower end of the telescopic rod 18. When one of the several bridge frame crossarms 7 reaches directly below the pair of electric telescoping devices 12, the telescopic rods 18 of the pair of electric telescoping devices 12 extend downward into the groove 19 of this bridge frame crossarm 7, and under the constraint of the lower end of the telescopic rod 18, this bridge frame crossarm 7 is prevented from moving horizontally with the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b.

[0045] A pair of lifters 9 are installed on the side of the vertical arm 22 away from the bridge side plate linear guide device 50 through the lifter bracket 21, and the lifting part of the lifter 9 is fixedly connected with a transverse lifting baffle 10, and the length direction of the transverse lifting baffle 10 is perpendicular to the first linear bridge side plate 6a and the second linear bridge side plate 6b; when the lifter is extended downward, the transverse lifting baffle 10 can prevent the first linear bridge side plate 6a and the second linear bridge side plate 6b from displacing along their own linear direction.

[0046] Working methods, "Step 1" to "Step 6" see Figure 2 and 3 :

[0047] Step 1: Arrange the first linear bridge side plate 6a and the second linear bridge side plate 6b horizontally and arrange the first linear bridge side plate 6a and the second linear bridge side plate 6b with the grooved sides facing each other;

[0048] Step 2: The first straight bridge frame side plate 6a and the second straight bridge frame side plate 6b are pushed onto the bridge frame side plate linear guide device 50 along the length direction; the inner constraint wheels 5 and the outer constraint groove wheels 4 on the three groups of first roller guide units 2a are rolled and clamped on the inner and outer sides of the first straight bridge frame side plate 6a; so that the first straight bridge frame side plate 6a can only be displaced along its own length direction under the common constraint of the three groups of first roller guide units 2a; at the same time, the inner constraint wheels 5 and the outer constraint groove wheels 4 on the three groups of second roller guide units 2b are rolled and clamped on the inner and outer sides of the second straight bridge frame side plate 6b; so that the second straight bridge frame side plate 6b can only be displaced along its own length direction under the common constraint of the three groups of second roller guide units 2b;

[0049] Step 3: On the side of the bridge frame side plate linear guide device 50 close to the cross arm welding device 8, a plurality of bridge frame cross arms 7 to be welded with the grooves 19 facing upward are vertically placed between the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b, so that the plurality of bridge frame cross arms 7 are arranged parallel to each other and closely; the two ends of each bridge frame cross arm 7 are respectively supported by the linear horizontal flanges 30 at the lower part of the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b; and gaps 20 to be welded are formed between the two ends of each bridge frame cross arm 7 and the inner side surfaces of the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b;

[0050] Step 4, the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b are synchronously pushed and displaced in the direction close to the cross arm welding device 8, and a plurality of bridge frame cross arms 7 vertically placed between the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b are displaced accordingly, until the cross arm welding device 8 is docked with the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b guided along the linear direction from the bridge frame side plate linear guide device 50: after docking, the clamping wheels 17 and the driving groove wheels 16 on each first bridge frame side plate driving unit 1a are rolled and clamped on the inner and outer sides of the first linear bridge frame side plate 6a; the clamping wheels 17 and the driving groove wheels 16 on each second bridge frame side plate driving unit 1b are rolled and clamped on the inner and outer sides of the second linear bridge frame side plate 6b; the transverse lifting baffle 10 simultaneously limits the contact with the ends of the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b, so that the two ends of the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b are aligned;

[0051] Step 5, controlling the transverse lifting baffle 10 to rise to a position higher than the first linear bridge side plate 6a and the second linear bridge side plate 6b;

[0052] Step 6: synchronously control the driving groove wheels 16 on the two groups of first bridge frame side plate driving units 1a and the driving groove wheels 16 on the two groups of second bridge frame side plate driving units 1b to rotate synchronously, and the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b synchronously continue to synchronously and actively displace along their own linear directions;

[0053] In the process from "step 4" to "step 6", when the first bridge crossarm 7 among the plurality of bridge crossarms 7 arrives directly below the pair of electric telescopic devices 12, the telescopic rods 18 of the pair of electric telescopic devices 12 immediately extend downward into the groove 19 of the first bridge crossarm 7. Under the constraint of the lower end of the telescopic rod 18, the first bridge crossarm 7 is prevented from synchronously translating with the first linear bridge side plate 6a and the second linear bridge side plate 6b. , the remaining bridge crossarms 7 also stop moving in translation under the restriction of the first bridge crossarm 7. At the same time, under the joint drive of the two groups of first bridge side plate driving units 1a and the two groups of second bridge side plate driving units 1b, the first straight bridge side plate 6a and the second straight bridge side plate 6b continue to move slowly along the length direction; thereby causing the bridge crossarm 7 to slide relative to the first straight bridge side plate 6a and the second straight bridge side plate 6b. When the first bridge crossarm 7 slides relative to the first straight bridge side plate 6a and the second straight bridge side plate 6b to the target welding position When the second bridge crossarm 7 among the plurality of bridge crossarms 7 reaches directly below the pair of electric telescopic devices 12, the telescopic rods 18 of the pair of electric telescopic devices 12 immediately extend downward into the groove 19 of the second bridge crossarm 7. Under the constraint of the lower end of the telescopic rod 18, the second bridge crossarm 7 is prevented from synchronously moving with the first linear bridge side plate 6a and the second linear bridge side plate 6b. At the same time, the second bridge crossarm 7 is A bridge cross arm 7 continues to move synchronously with the first straight bridge side plate 6a and the second straight bridge side plate 6b, thereby realizing the separation of the first bridge cross arm 7 from the second bridge cross arm 7. When the gaps 20 to be welded at both ends of the first bridge cross arm 7 are translated to the ends of the corresponding first spray welding gun 11a and second spray welding gun 11b, the first spray welding gun 11a and second spray welding gun 11b automatically spray a predetermined amount of welding liquid to weld the gaps 20 to be welded at both ends of the first bridge cross arm 7, thereby realizing the welding of the first bridge cross arm 7.

[0054] At the same time, under the joint drive of the two groups of first bridge frame side plate driving units 1a and the two groups of second bridge frame side plate driving units 1b, the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b continue to slowly advance along the length direction; thereby, the other bridge frame crossarms 7 except the welded first bridge frame crossarm 7 slide relative to the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b; when the second bridge frame crossarm 7 slides to the target welding position relative to the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b, the telescopic rod 18 is immediately retracted upwards, so that each bridge frame crossarm 7 is synchronously displaced with the first linear bridge frame side plate 6a and the second linear bridge frame side plate 6b again; when the third bridge frame crossarm 7 among the plurality of bridge frame crossarms 7 reaches directly below a pair of electric telescoping devices 12, the telescopic movement of the pair of electric telescoping devices 12 The rod 18 immediately extends downward into the groove 19 of the third bridge crossarm 7. Under the constraint of the lower end of the telescopic rod 18, the third bridge crossarm 7 is prevented from synchronously moving with the first linear bridge side plate 6a and the second linear bridge side plate 6b; at the same time, the second bridge crossarm 7 continues to move synchronously with the first linear bridge side plate 6a and the second linear bridge side plate 6b, thereby realizing the separation of the second bridge crossarm 7 from the third bridge crossarm 7. When the gaps 20 to be welded at both ends of the second bridge crossarm 7 are respectively translated to the corresponding ends of the first spray welding gun 11a and the second spray welding gun 11b, the first spray welding gun 11a and the second spray welding gun 11b automatically spray a predetermined amount of welding liquid to weld the gaps 20 to be welded at both ends of the second bridge crossarm 7, thereby realizing the welding of the first bridge crossarm 7.

[0055] By analogy, according to the above rules, a number of bridge crossarms 7 can be evenly distributed or randomly welded between the first linear bridge side plate 6a and the second linear bridge side plate 6b. In this solution, once the crossarm welding device 8 can connect to the first linear bridge side plate 6a and the second linear bridge side plate 6b guided by the bridge side plate linear guide device 50, the subsequent processes are fully automated, the consistency of the welding is guaranteed, and the problem of low consistency of manual welding is avoided.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A stepped linear cable tray automatic welding system, characterized by: It comprises a cross arm welding device (8), a bridge frame side plate linear guide device (50), a first linear bridge frame side plate (6a), a second linear bridge frame side plate (6b) and a plurality of bridge frame cross arms (7); the cross arm welding device (8) corresponds to the bridge frame side plate linear guide device (50); the bridge frame side plate linear guide device (50) can guide the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b) which are symmetrically arranged in parallel along the length extension direction, so that the cross arm welding device (8) can be connected to the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b) guided by the bridge frame side plate linear guide device (50); On the basis of being guided by a bridge frame side plate linear guide device (50), a first linear bridge frame side plate (6a) and a second linear bridge frame side plate (6b) which are symmetrically arranged in parallel can vertically place a plurality of bridge frame cross arms (7) to be welded with a plurality of trough bodies (19) facing upwards between the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b), and the two ends of each bridge frame cross arm (7) are respectively supported by the linear horizontal flanges (30) at the lower parts of the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b); The cross arm welding device (8) can slide a plurality of bridge frame cross arms (7) one by one to a predetermined welding position, and weld a plurality of bridge frame cross arms (7) one by one between the first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b) that have been butted together; The cross arm welding device (8) comprises a fixed vertical arm (22), two groups of first bridge frame side plate driving units (1a) and two groups of second bridge frame side plate driving units (1b); a plurality of transverse cantilever brackets (13) are fixed to the lower end of the vertical arm (22); the two groups of first bridge frame side plate driving units (1a) and the two groups of second bridge frame side plate driving units (1b) are respectively connected to the ends of the transverse cantilever brackets (13); The first bridge frame side plate driving unit (1a) and the second bridge frame side plate driving unit (1b) both comprise a support (14), a driving motor (15), a driving groove wheel (16) and a clamping wheel (17); the support (14) is fixedly connected to the transverse cantilever bracket (13), the housing of the driving motor (15) is fixedly connected to the support (14), the driving groove wheel (16) and the clamping wheel (17) are arranged vertically and in parallel, the output end of the driving motor (15) is drivingly connected to the driving groove wheel (16), and the wheel shaft (24) of the clamping wheel (17) is rotatably mounted on the support (14) via a bearing; The cross arm welding device (8) is based on the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b) guided by the bridge frame side plate linear guide device (50): the clamping wheel (17) and the driving groove wheel (16) of each first bridge frame side plate driving unit (1a) are rolled and clamped on the inner and outer sides of the first linear bridge frame side plate (6a), and the first linear bridge frame side plate (6a) is actively displaced along its own linear direction under the active rotation drive of the driving groove wheels (16) on the two groups of first bridge frame side plate driving units (1a); the clamping wheel (17) and the driving groove wheel (16) of each second bridge frame side plate driving unit (1b) are rolled and clamped on the inner and outer sides of the second linear bridge frame side plate (6b), and the second linear bridge frame side plate (6b) is actively displaced along its own linear direction under the active rotation drive of the driving groove wheels (16) on the two groups of second bridge frame side plate driving units (1b); A first welder (10a) and a second welder (10b) are symmetrically fixedly installed below each of the transverse cantilever brackets (13); the spray welding guns of the first welder (10a) and the second welder (10b) are respectively recorded as a first spray welding gun (11a) and a second spray welding gun (11b); the first spray welding gun (11a) and the second spray welding gun (11b) are arranged under the inclined slot in an "eight" symmetrical shape; the cross arm welding device (8) is connected to the cross arm welding gun guided by the bridge frame side plate linear guide device (50) On the basis of the first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b): both ends of each bridge frame cross arm (7) respectively form a gap (20) to be welded with the inner side surface of the first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b); the gap (20) to be welded at both ends of the bridge frame cross arm (7) can follow the first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b) to move synchronously to the ends of the first spray welding gun (11a) and the second spray welding gun (11b) respectively; At least one pair of electric telescopic devices (12) with telescopic rods (18) facing vertically downwards are fixedly mounted below the transverse cantilever bracket (13) via a telescopic device bracket (23); the telescopic rods (18) are located on one side of the first welder (10a) and the second welder (10b) close to the bridge frame side plate linear guide device (50); the width of the groove body (19) along the length direction on each bridge frame cross arm (7) is greater than the outer diameter of the lower end of the telescopic rod (18).

2. The automatic welding system for stepped linear cable tray according to claim 1 is characterized in that: A pair of lifters (9) are installed on the side of the vertical arm (22) away from the bridge frame side plate linear guide device (50) through a lifter bracket (21), and the lifting part of the lifter (9) is fixedly connected to a transverse lifting baffle (10).

3. The welding method of the automatic welding system for a stepped linear cable tray according to claim 2 is characterized in that: Step 1: align the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b) horizontally, and arrange the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b) with the grooved sides facing each other; Step 2: The first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b) are pushed along the length direction onto the bridge frame side plate linear guide device (50), so that the second straight bridge frame side plate (6b) can only be displaced along its own length direction; Step three: on the side of the bridge frame side plate linear guide device (50) close to the cross arm welding device (8), a plurality of bridge frame cross arms (7) to be welded with a plurality of trough bodies (19) facing upward are vertically placed between the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b), so that the plurality of bridge frame cross arms (7) are arranged parallel to each other and closely; the two ends of each bridge frame cross arm (7) are respectively supported by the linear horizontal flanges (30) at the lower part of the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b); and gaps (20) to be welded are formed between the two ends of each bridge frame cross arm (7) and the inner side surfaces of the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b); Step 4: The first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b) are simultaneously pushed and displaced in the direction close to the cross arm welding device (8), and a plurality of bridge frame cross arms (7) vertically placed between the first straight bridge frame side plate (6a) and the second straight bridge frame side plate (6b) are displaced accordingly until the cross arm welding device (8) is docked with the first straight bridge frame side plate (6a) and the second straight bridge frame side plate guided in a straight direction from the bridge frame side plate linear guide device (50) (6b): After docking, the clamping wheels (17) and the driving groove wheels (16) on each first bridge frame side plate driving unit (1a) are rolled and clamped on the inner and outer sides of the first linear bridge frame side plate (6a); the clamping wheels (17) and the driving groove wheels (16) on each second bridge frame side plate driving unit (1b) are rolled and clamped on the inner and outer sides of the second linear bridge frame side plate (6b); the transverse lifting baffle (10) simultaneously limits contact with the ends of the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b); Step 5, controlling the transverse lifting baffle (10) to rise to a position higher than the first linear bridge side plate (6a) and the second linear bridge side plate (6b); Step six, synchronously controlling the driving groove wheels (16) on the two groups of first bridge frame side plate driving units (1a) and the driving groove wheels (16) on the two groups of second bridge frame side plate driving units (1b) to rotate synchronously, and the first linear bridge frame side plate (6a) and the second linear bridge frame side plate (6b) synchronously continue to synchronously and actively displace along their own linear directions; In the process from "step 4" to "step 6", when the plurality of bridge crossarms (7) follow the synchronous displacement of the first straight bridge side plate (6a) and the second straight bridge side plate (6b), when the first bridge crossarm (7) among the plurality of bridge crossarms (7) reaches directly below the pair of electric telescopic devices (12), the telescopic rods (18) of the pair of electric telescopic devices (12) immediately extend downward into the groove body (19) of the first bridge crossarm (7), and under the constraint of the lower end of the telescopic rod (18), the first bridge crossarm (7) is prevented from following the first straight bridge side plate (6a) and the second straight bridge side plate. (6b) are translated synchronously, and the remaining bridge crossarms (7) are also suspended in translation under the restriction of the first bridge crossarm (7). At the same time, under the joint drive of the two groups of first bridge side plate driving units (1a) and the two groups of second bridge side plate driving units (1b), the first straight bridge side plate (6a) and the second straight bridge side plate (6b) continue to be slowly advanced along the length direction; thereby causing the bridge crossarm (7) to slide relative to the first straight bridge side plate (6a) and the second straight bridge side plate (6b). When the first bridge crossarm (7) is relative to the first straight bridge side plate (6a) and the second straight bridge side plate (6 b) When sliding to the target welding position, the telescopic rod (18) is immediately retracted upwards, so that each bridge crossarm (7) is re-synchronized with the first straight bridge side plate (6a) and the second straight bridge side plate (6b). When the second bridge crossarm (7) among the plurality of bridge crossarms (7) reaches directly below the pair of electric telescopic devices (12), the telescopic rod (18) of the pair of electric telescopic devices (12) is immediately extended downwards into the groove (19) of the second bridge crossarm (7). Under the constraint of the lower end of the telescopic rod (18), the second bridge crossarm (7) is prevented from following the first straight bridge side plate (6a) and the second straight The wire bridge side plate (6b) is synchronously translated; at the same time, the first bridge cross arm (7) continues to follow the first linear bridge side plate (6a) and the second linear bridge side plate (6b) to be synchronously displaced, so that the first bridge cross arm (7) is separated from the second bridge cross arm (7); when the gaps (20) to be welded at both ends of the first bridge cross arm (7) are translated to the ends of the corresponding first spray welding gun (11a) and the second spray welding gun (11b), the first spray welding gun (11a) and the second spray welding gun (11b) automatically spray a predetermined amount of welding liquid to weld the gaps (20) to be welded at both ends of the first bridge cross arm (7).

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