CN201009062Y

CN201009062Y - Frock for soldering excavator movable arm set

Info

Publication number: CN201009062Y
Application number: CNU200720034714XU
Authority: CN
Inventors: 国清华; 陈水平; 何长春
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2007-02-13
Filing date: 2007-02-13
Publication date: 2008-01-23
Anticipated expiration: 2017-02-13

Abstract

The utility model discloses a working equipment for excavator boom assembly welding, comprising a working platform as well as a positioning device and a clamping device which are arranged on the working platform, which is characterized in that: the positioning device comprises a front and back bearing, an ear plate and a middle bearing which are the positioning components; each component respectively consists of a bracket fixed with the working platform and a positioning shaft inserted in the shaft hole on the top of the bracket; each positioning shaft is correspondingly matched with the four articulated holes on a boom; the clamping device comprises at least two side plate locking devices which consists of a positioning plate and the locking mechanisms arranged on both sides of the positioning plate; the bottom of the positioning plate is fixed with the working platform, while the top is provided with a convex contained in a boom box; the width of the convex is matched with the distance between the left and right side plates of the boom; two sides of the convex form the horizontal supporting shoulder of the side plates. The utility model uses each positioning component and the side plate locking devices to make assembly welding and positioning for the boom, makes the working equipment designing difficulty decreased, makes working equipment simple and practical, and saves investment cost.

Description

Excavator swing arm assembly welding frock

Technical field

The utility model relates to a kind of frock that is used for packing engineering machinery, is specifically related to a kind of excavator swing arm assembly welding frock.

Background technology

Excavator swing arm is one of critical piece of excavator, because excavator is low working face engineering machinery, in order to have enough scopes of activities and mining ability, adopted the irregular box-shaped Welding Structure of asymmetric long-armed type when the design swing arm, this structure has caused very big difficulty to swing arm each several part contraposition welding.

Swing arm mainly is made up of forward and backward bearing assembly, a pair of upper ear plate, left and right side plate and upper plate, lower shoe, be equipped with a hinge hole at every group of bearing assembly, otic placode and side plate middle part, dimension precision requirement is all arranged between each hole, for the planform and the dimensional accuracy that guarantee swing arm, its welding procedure is generally: 1. two supports assembly and middle part upper ear plate at first respectively with swing arm lower shoe, biside plate contraposition, typing; 2. said modules is put postwelding, the swing arm upper plate is covered on the side plate point be welded into box structure; 3. integral solder.Because the swing arm building block is more, and certain position accuracy demand is arranged all between each parts, therefore, the whole contraposition of swing arm, setting just seem very important, generally adopt special equipment to weld the contraposition machine during contraposition and carry out contraposition, to bit combination, the location clamps laggard spot welding typing and forms an integral body with each part of swing arm.

In the prior art, welding contraposition machine adopts the large hydraulic tooling device usually, it comprises hydraulic system, hold down gag, displacement system and workbench etc., because the complexity of hydraulic pressure tooling device, for the excavator of small lot, prepattern production, cost of investment is too high, and need be to the hydraulic system periodic maintenance, the maintenance cost height, and when the change product type, the transformation of the way difficulty of hydraulic pressure frock is big, thereby causes the waste of cost of investment; On the other hand, owing to adopt welding lower shoe earlier, the welding manner of bonnet upper plate, therefore upper plate only carries out integral solder at outer surface and biside plate, can't weld internal weld seams, and find that in actual use the stressed cracking phenomena of upper plate is greater than lower shoe, therefore, the welding fastness of upper plate directly influences product quality.

Summary of the invention

The utility model purpose provides a kind of simple in structure, excavator swing arm assembly welding frock that cost of investment is low, adopts this frock assembly welding swing arm, helps to improve the quality of products.

For achieving the above object, the technical solution adopted in the utility model is: a kind of excavator swing arm assembly welding frock, comprise workbench, be arranged at positioner and clamping device on the workbench, described positioner comprises forward and backward supporting positioning component, otic placode positioning component and middle supporting positioning component, each assembly is respectively by forming with fixing support of workbench and the locating shaft that is interspersed in the axis hole of support top, each described locating shaft respectively with the forward and backward bearing assembly of swing arm, upper ear plate assembly and side plate in the middle part of the corresponding coupling in four hinge hole positions; Described clamping device comprises at least 2 side plate locking devices, each described side plate locking device is made up of location-plate and the retaining mechanism that is arranged at the location-plate both sides, the bottom and the workbench of described location-plate are fixed, the top is provided with the projection that is dissolved in the swing arm casing, the width of projection and the distance between the swing arm left side plate are complementary, and protruding both sides constitute side plate horizontal support shoulder.

In the technique scheme, before described excavator swing arm is served as reasons, back bearing assembly, upper ear plate, a left side, right plate and upper plate, the casing that lower shoe is welded to form, bearing assembly, be respectively arranged with hinge hole on upper ear plate and the side plate, before described, back supporting positioning component, the position of four hinge holes on upper ear plate positioning component and the corresponding swing arm of middle supporting positioning component difference, when the welding swing arm, locating shaft by each assembly medium-height trestle top is interspersed in the hinge hole of correspondence position, realization is to the perpendicular positioning of swing arm upper plate and upper ear plate, to preceding, the relative position location of back bearing assembly; The top bump of described each location-plate is used to limit a swing arm left side, distance between right plate, left side plate is placed respectively on the horizontal support shoulder of location-plate both sides, fix by retaining mechanism, this retaining mechanism can adopt prior art, to reach fixed side, make its medial surface be affixed on purpose on the location-plate top bump sidewall, this moment can be to upper plate, left side plate and upper ear plate weld, the swing arm that does not weld lower shoe can be taken off on workbench after finishing and (unclamp clamping device, extracting locating shaft out gets final product), stand up, upper plate and interpleural inseam are welded, cover lower shoe after finishing again, carry out integral solder, finish assembly welding.

In the technique scheme, described retaining mechanism is made up of push rod, adjusting nut and pole, and described pole is connected with the location-plate bottom, and the through hole through pole top between described push rod and pole is connected, and by the adjusting nut location, push rod one end cooperates with the side plate outer surface.

The pole wherein and the syndeton of location-plate can be to flexibly connect, and promptly described pole and location-plate bottom are rotationally connected, and spacing by a cam mechanism, and described cam mechanism is provided with handle.Cam mechanism is present technique field personnel's a known technology, turning handle can drive the cam mechanism motion, reaches locking and release to pole, behind the position by adjusting nut setting push rod, position in the time of can determining pole locking, thereby make after finishing an assembly welding task, release pole can be taken out movable arm-set, after putting into new movable arm-set, need not to change the adjusting nut position, locking pole gets final product, thereby has made things convenient for assembly welding next time.

Another kind of structure is that described pole fixedlys connected with the location-plate bottom.Under this structure, put at every turn or when taking off movable arm-set, need the adjusting nut position, to clamp or to loosen push rod.

In the technique scheme, also include forward and backward fagging in the described positioner, described forward and backward fagging lays respectively at the opposite sides of nearly described forward and backward bearing assembly end, and its bottom is fixed with workbench, and the top cooperates with the forward and backward bearing assembly of the swing arm of corresponding end bottom surface.

Optimized technical scheme is, described clamping device is made up of 2 side plate locking devices arranging between 3 side plate locking devices that distribute between middle supporting positioning component and the preceding fagging and middle supporting positioning component and the rear stay plate.

Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:

1, by forward and backward supporting positioning component, otic placode positioning component and middle supporting positioning component is four hinge hole location of diverse location on the swing arm vertical direction, simultaneously, owing to weld upper plate earlier, weld upper plate at last, thereby can utilize the location-plate in the clamping device swing arm left side plate horizontal direction to be located after retaining mechanism clamps, compare with complicated in the past hydraulic pressure frock, the utility model is simple in structure, reduce cost of investment greatly, be applicable to the swing arm assembly welding that small lot and prepattern are produced;

During 2, owing to employing the utility model assembly welding swing arm, take to assemble at last the mode of lower shoe, thereby after to the upper plate surface soldered, can further weld the seam of its inside and left side plate, cover lower shoe at last and finish integral assembly welding, the higher upper plate of welding firmness is carried out the inside and outside dual welding, effectively improved swing arm assembly welding quality;

3, because the utility model frock is simple, and personnel do not have particular requirement to frock, operate more easyly, practical, and needn't safeguard specially, saved maintenance cost.

Description of drawings

Accompanying drawing 1 is the utility model embodiment one user mode structural representation;

Accompanying drawing 2 is the vertical view of Fig. 1;

Accompanying drawing 3 is the A-A cutaway view Amplified image of Fig. 2.

Wherein: 1, workbench; 2, preceding supporting positioning component; 3, back supporting positioning component; 4, otic placode positioning component; 5, middle supporting positioning component; 6, preceding fagging; 7, rear stay plate; 8, locating shaft; 9, support; 10, side plate locking device; 11, location-plate; 12, push rod; 13, pole; 14, adjusting nut; 15, cam mechanism; 16, handle; 17, preceding bearing assembly; 18, back bearing assembly; 19, side plate; 20, upper ear plate assembly; 21, support shoulder.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment one: referring to accompanying drawing 1 to shown in the accompanying drawing 3, a kind of excavator swing arm assembly welding frock, comprise workbench 1, be arranged at positioner and clamping device on the workbench 1, described positioner is by preceding supporting positioning component 2, back supporting positioning component 3, otic placode positioning component 4, middle supporting positioning component 5 and preceding fagging 6, rear stay plate 7 is formed, each assembly is respectively by forming with workbench support of fixing 9 and the locating shaft 8 that is interspersed in the axis hole of support top, wherein, before, back supporting locating shaft corresponding to swing arm before, hinge hole on the back bearing assembly, the hinge hole of the corresponding otic placode positioning component of otic placode locating shaft, the middle supporting hinge hole at the corresponding swing arm of middle supporting locating shaft middle part, before described,

rear stay plate

6,7 lay respectively near described before, the opposite sides of back bearing assembly end, its bottom is fixing with workbench 1, before the swing arm of top and corresponding end, back bearing assembly bottom surface cooperates; Described clamping device is made up of 2 side plate locking devices arranging between 3 side plate locking devices that distribute between middle supporting positioning component and the preceding fagging and middle supporting positioning component and the rear stay plate, each clamping device is made up of location-plate 11 and the retaining mechanism that is arranged at the location-plate both sides, the bottom and the workbench of described location-plate are fixed, the top is provided with the projection that is dissolved in the swing arm casing, the projection both sides are provided with side plate horizontal support shoulder 21, the distance that the width of described projection and swing arm left side plate are 19 is complementary, described retaining mechanism is by push rod 12, adjusting nut 14 and pole 13 are formed, described pole 13 is connected with the location-plate sidewall through a cam mechanism 15, cam mechanism 15 is driven by handle 16, the top of pole is provided with through hole, described push rod 12 is interspersed in the through hole of pole, push rod is corresponding to the location-plate high spot, which is provided with external screw thread, adjusting nut is arranged at the both sides of pole respectively through external screw thread.

When the assembly welding swing arm, locating shaft in forward and backward supporting positioning component, otic placode positioning component, the middle supporting positioning component is interspersed in respectively in four hinge holes at the forward and backward bearing

assembly

17,18 of swing arm, upper ear plate assembly 20 and swing arm middle part, the locating shaft at medium-height trestle top is interspersed in the hinge hole of correspondence position, realization is to the perpendicular positioning of swing arm upper plate and upper ear plate, to the relative position location of forward and backward bearing assembly; Then left side plate is placed on the support shoulder of location-plate, by stirring handle, screw adjusting nut, make push rod locking side plate (the side plate inwall is affixed on the location-plate top bump sidewall), realization is to a swing arm left side, the location of distance between right plate, this moment can be with upper plate, left side plate and upper ear plate weld, and after finishing, handle are dialled back, make push rod unclamp clamping to side plate, extract each locating shaft out, on workbench, take off the swing arm casing that does not weld lower shoe, stand up, upper plate and interpleural inseam are welded, cover lower shoe after finishing again, carry out integral solder, finish the swing arm assembly welding.

Claims

1. excavator swing arm assembly welding frock, comprise workbench [1], be arranged at positioner and clamping device on the workbench, it is characterized in that: described positioner comprises forward and backward supporting positioning component [2,3], otic placode positioning component [4] and middle supporting positioning component [5], each assembly is respectively by forming with fixing support [9] of workbench and the locating shaft [8] that is interspersed in the axis hole of support top, each described locating shaft [8] respectively with the forward and backward bearing assembly of swing arm, upper ear plate assembly and side plate in the middle part of the corresponding coupling in four hinge hole positions; Described clamping device comprises at least 2 side plate locking devices [10], each described side plate locking device is made up of location-plate [11] and the retaining mechanism that is arranged at the location-plate both sides, the bottom of described location-plate [11] and workbench [1] are fixing, the top is provided with the projection that is dissolved in the swing arm casing, the width of projection and the distance between the swing arm left side plate are complementary, and protruding both sides constitute side plate horizontal support shoulder [21].

2. excavator swing arm assembly welding frock according to claim 1, it is characterized in that: described retaining mechanism is made up of push rod [12], adjusting nut [14] and pole [13], described pole [13] is connected with location-plate [11] bottom, through hole through pole top between described push rod [12] and pole [13] is connected, by adjusting nut [14] location, push rod [12] one ends cooperate with side plate [19] outer surface.

3. excavator swing arm assembly welding frock according to claim 2 is characterized in that: described pole [13] is rotationally connected with location-plate [11] bottom, and spacing by a cam mechanism [15], and described cam mechanism [15] is provided with handle [16].

4. excavator swing arm assembly welding frock according to claim 2 is characterized in that: described pole fixedlys connected with the location-plate bottom.

5. excavator swing arm assembly welding frock according to claim 1, it is characterized in that: also include forward and backward fagging [6,7] in the described positioner, described forward and backward fagging lays respectively at the opposite sides of nearly described forward and backward bearing assembly end, its bottom is fixed with workbench, and the top cooperates with the forward and backward bearing assembly of the swing arm of corresponding end [17,18] bottom surface.

6. excavator swing arm assembly welding frock according to claim 1 or 5 is characterized in that: described clamping device is made up of 2 side plate locking devices arranging between 3 side plate locking devices that distribute between middle supporting positioning component and the preceding fagging and middle supporting positioning component and the rear stay plate.