CN212823833U - Draw beam assembly device - Google Patents

Abstract

The utility model belongs to the technical field of machining, especially, relate to a draw beam assembly quality. This assembly device support piece is provided with two, two support pieces set up on the top of workstation along the width direction of workstation relatively, lower apron supports through two support pieces, the driving piece is provided with two, two driving pieces set up along the width direction of workstation relatively, two driving pieces all are located support piece's top, the output of every driving piece reciprocates along vertical downwards, the output of two driving pieces is used in the lower apron of the both sides that two webplates deviate from mutually. The utility model discloses can guarantee the draw beam lower cover plate plane degree.

Description

Draw beam assembly device

Technical Field

The utility model belongs to the technical field of machining, especially, relate to a draw beam assembly quality.

Background

The traction beam is a main part of a wagon body of a wheel-rail vehicle, is also a core part of a chassis part of the wagon body, is equivalent to a spine of a human body, is also a link for connecting the wagon body and a lower body part, and plays a vital role in the whole wagon box.

The box-shaped structure type traction beam is a novel structure type traction beam, and can increase the load of a wheel-rail vehicle. Fig. 1 is a schematic structural diagram of a draft sill in the form of a box structure, and referring to fig. 1, the draft sill includes a lower cover plate 1, two impact seats 2, webs 3 and partition plates 4, wherein the webs 3 are provided with two, the two webs 3 are arranged on two sides of the width direction of the lower cover plate 1, the impact seats 2 are arranged on one side of the length direction of the lower cover plate 1, the partition plates 4 are provided with a plurality of, the plurality of partition plates 4 are arranged on the lower cover plate 1, and two ends of the width direction of the plurality of partition plates 4 are connected to the two webs 3.

In the prior art, each component of the draft sill is formed by welding plates, wherein a lower cover plate of the draft sill is connected with an upper center plate by a rivet, and in order to meet the requirements of a riveting process, the gap between the contact surfaces of the lower cover plate and the upper center plate of the draft sill cannot exceed 0.75 mm. The contact surface of the upper center plate and the lower cover plate is a machined surface, so that the requirement on the flatness of the lower cover plate of the traction beam is high. However, the welding type draft sill has the disadvantages of complex structure, large welding amount and serious welding deformation, and the flatness control difficulty of the lower cover plate of the draft sill after welding forming is large.

In the course of implementing the present invention, the applicant has found that there are at least the following disadvantages in the prior art:

in the prior art, a common deformation control method for a welding part mainly comprises a prefabricated reversible deformation method, and deformation after welding is usually corrected by machinery or flame. For the type of plate welded draft sill, the deformation occurs mainly in the lower deck of the draft sill. Because the lower cover plate is thin and about 20mm in thickness, a prefabrication reverse deformation method is adopted or mechanical correction is carried out after welding the product, the investment of large bending and large correction equipment is required to be increased while the prefabrication reverse deformation and the correction procedure after welding of the product are increased, the cost is higher, the manufacturing cost of the product is increased, and the manufacturing period of the product is prolonged; meanwhile, the structure form of the draft sill is limited, so that the draft sill is inconvenient to be mechanically corrected after being integrally assembled and welded, the physical and mechanical properties of the product material are greatly influenced by flame correction, the service performance of the product is influenced, and the requirement of a customer cannot be met. If the contact surface of the product and the core plate is machined after the product is molded, the manufacturing cost and the manufacturing period of the product are greatly increased.

Because, how to guarantee the back draft sill lower shroud plane degree of welding shaping, be the technical problem that prior art urgently need solve.

SUMMERY OF THE UTILITY MODEL

To the problem that above-mentioned prior art exists, the utility model provides a draw beam assembly device to apron plane degree under guaranteeing draw beam behind the weld forming.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the utility model discloses a draw beam assembly device, the draw beam is including the lower apron of equipment together, impact seat, web and baffle, the web is provided with two, two the web sets up the width direction's of apron both sides down, it is in down to strike the seat setting one side of the length direction of apron, the baffle is provided with a plurality of, a plurality of the baffle sets up on the apron down, just, a plurality of the width direction's of baffle both ends are connected two on the web, its characterized in that, the assembly device includes:

a working table is arranged on the upper portion of the machine body,

the two supporting pieces are oppositely arranged on the top of the workbench along the width direction of the workbench, and the lower cover plate is supported by the two supporting pieces;

the driving piece, the driving piece is provided with two, two the driving piece is followed the width direction of workstation sets up relatively, two the driving piece all is located support piece's top, every the output of driving piece is along vertical downward round trip movement, two the output of driving piece is used in two the both sides that the web departed from down on the apron.

Further, every the driving piece all includes a plurality of jacks, and is a plurality of the jack is followed the length direction of workstation interval sets gradually the top of support piece, every the output of jack reciprocates along vertical downwards, every the driving piece a plurality of the output of jack all is used in on the apron down.

Furthermore, the riveting hole of the lower cover plate and the riveting hole of the upper center plate are provided with one jack, two jacks are arranged between the riveting hole and the impact seat, and one jack is arranged between the riveting hole and one end of the lower cover plate far away from the impact seat.

Furthermore, the assembling device further comprises two rows of cushion blocks, the two rows of cushion blocks are oppositely arranged on the workbench along the width direction of the workbench, the height of the cushion blocks is lower than that of the supporting piece, and the two rows of cushion blocks are respectively positioned on the edges of the two sides of the lower cover plate in the width direction.

Furthermore, each support piece all includes a plurality of supporting blocks, and a plurality of the supporting block is followed the length direction of workstation interval sets gradually on the top of workstation, a plurality of the supporting block is located the corresponding below of installing the web department of lower apron.

Furthermore, at least two cavities are arranged on the lower cover plate along the length direction of the lower cover plate, first positioning blocks are arranged in the two cavities at the two ends of the lower cover plate in the length direction, the first positioning blocks are fixedly arranged on the workbench, and the first positioning blocks are arranged close to one side of the cavities in the width direction;

one side of the width direction of the workbench is provided with a first clamping mechanism, the first clamping mechanism and the first positioning block are positioned on the same side of the workbench, the output end of the first clamping mechanism can stretch along the width direction of the workbench, and the output end of the first clamping mechanism can be operably abutted against the side part of the lower cover plate in the width direction.

Furthermore, a second positioning block is further arranged on the workbench and is arranged in the cavity close to the impact seat, and the second positioning block is arranged close to one side of the cavity far away from the impact seat in a clinging manner;

the workbench is further provided with a second clamping mechanism, the second clamping mechanism is located on one side far away from the impact seat, the output end of the second clamping mechanism can stretch along the length direction of the workbench, and the output end of the second clamping mechanism can be operatively abutted against the side part of the lower cover plate in the length direction.

Furthermore, two second supporting blocks are oppositely arranged on the workbench, and the two second supporting blocks support the impact seat;

the workbench is also provided with a third positioning block which is arranged on the inner side of the impact seat in the width direction;

the workbench is also provided with a third clamping mechanism, the output end of the third clamping mechanism can stretch along the width direction of the workbench, and the output end of the third clamping mechanism can be operably abutted against the side part of the impact seat in the width direction;

the workbench is further provided with a fourth clamping mechanism, the output end of the fourth clamping mechanism can stretch along the length direction of the workbench, and the output end of the fourth clamping mechanism can be operably abutted against the side part of the impact seat in the length direction.

The utility model has the advantages that:

the utility model discloses a traction beam assembling device and an assembling method, because the supporting pieces of the assembling device are provided with two, the two supporting pieces are oppositely arranged on the top of a workbench along the width direction of the workbench, and a lower cover plate is supported by the two supporting pieces, a gap is arranged between the lower cover plate and the workbench, because the two driving pieces are oppositely arranged along the width direction of the workbench, the two driving pieces are both positioned above the supporting pieces, the output end of each driving piece moves back and forth along the vertical direction, the output ends of the two driving pieces act on the lower cover plates at two sides opposite to each other, after the primary assembling of the traction beam is completed, the driving pieces can be operated, the output ends of the driving pieces act on the two transverse sides of the lower cover plate, the lower cover plate part outside the web plate is subjected to reversible deformation, so as to offset the welding deformation of the lower cover plate caused by the welding seam formed when the web plate is welded with the, the welding deformation is controlled, and the flatness of the lower cover plate of the traction beam is ensured, so that the product performance is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a trailing beam in the form of a box-like structure;

fig. 2 is a schematic structural view of a draft sill assembling apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of the draft sill assembling apparatus of the embodiment of the present invention, which is used for reverse deformation of the lower cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

For apron plane degree under guaranteeing draw beam behind weld forming, the embodiment of the utility model provides a draw beam assembly device and assembly method, wherein, the structure of draw beam has been expounded in the background art, the embodiment of the utility model provides a do not do here and describe repeatedly.

Fig. 2 is a schematic structural diagram of a draft sill assembling apparatus according to an embodiment of the present invention, and referring to fig. 2, the assembling apparatus includes a workbench 5, a supporting member and a driving member.

Combine fig. 2, in the embodiment of the utility model, workstation 5 is when the design preparation, and its top surface size should be greater than apron 1 down to in all kinds of members of design installation, for guaranteeing that workstation 5 has sufficient intensity, should adopt the channel-section steel to make into frame construction, need and guarantee the plane degree of its working face.

With reference to fig. 2, the supporting members of the embodiment of the present invention are provided with two supporting members, two supporting members are relatively disposed on the top of the workbench 5 along the width direction of the workbench 5, and the lower cover plate 1 is supported by two supporting members. In this way, there is a gap between the lower cover plate 1 and the worktable 5, which can provide an operation space for subsequent predeformation, and can allow splash and impurities generated when the members are welded to form the draft sill to fall onto the worktable 5 without affecting the flatness of the support.

Further, with reference to fig. 2, in the embodiment of the present invention, each supporting member includes a plurality of supporting blocks 6, the supporting blocks 6 are sequentially arranged on the top of the workbench 5 along the length direction of the workbench 5 at intervals, and the supporting blocks 6 are located below the corresponding mounting web 3 of the lower cover plate 1. The embodiment of the utility model provides a form the strong point in bulk through a plurality of supporting shoes 6, can be in same roughness through guaranteeing 6 top surfaces of a plurality of supporting shoes like this, guarantee the roughness that apron 1 located down, the operation more has the convenience to avoid the too big flatness error that causes of contact surface, thereby cause the inaccurate problem that influences the assembly quality in location with the influence, adjusting position when also being convenient for the accessory assembly simultaneously.

Specifically, with reference to fig. 2, in the embodiment of the present invention, after the lower cover plate 1 is placed on the workbench 5 in the middle to determine its position, on the table top of the workbench 5, the mounting positions along the webs at two sides are set with the longitudinal central line of the lower cover plate 1 as the reference, and the supporting blocks 6 with the length of five pieces, the width of 40mm and the thickness of 20mm are used as the positioning support of the lower plane.

The embodiment of the utility model provides an in, supporting shoe 6 can adopt detachable mode such as screw to install on the workstation.

Fig. 3 is the utility model discloses draw beam assembly device is to the structural schematic diagram of lower apron anti-deformation, combines fig. 3, the utility model discloses a driving piece is provided with two, and two driving pieces set up along the width direction of workstation 5 relatively, and two driving pieces all are located support piece's top, and the output of every driving piece is along vertical reciprocating motion downwards, and the output of two driving pieces is used on the lower apron 1 of the both sides that two webs 3 deviate from mutually. After the primary assembly of the traction beam is completed, the driving piece can be operated, the output end of the driving piece acts on the two transverse sides of the lower cover plate, the reverse deformation amount is generated on the lower cover plate part on the outer side of the web plate, so that the welding deformation generated by the lower cover plate due to the welding seam formed when the web plate is welded with the lower cover plate is offset, the welding deformation is controlled, the flatness of the lower cover plate of the traction beam is guaranteed, and the product performance is guaranteed.

Further, combine fig. 3, in the embodiment of the utility model, every driving piece all includes a plurality of jacks 7, and a plurality of jacks 7 set up in support piece's top along the length direction interval in proper order of workstation 5, and the output of every jack 7 reciprocates along vertical downwards, and the output of a plurality of jacks 7 of every driving piece all is used on apron 1 down.

Specifically, in the embodiment of the utility model provides an in, because apron 1 and the riveting department of last heart dish are a whole plane down, the rigidity is big, the flatness requirement is strict, consequently, the riveting hole correspondence department of apron 1 and last heart dish down is provided with a jack 7, the riveting hole with strike and be provided with two jacks 7 between the seat 2, the riveting hole is provided with a jack 7 with lapping 1 down between keeping away from the one end of striking seat 2, just so five with the unilateral, both sides set up ten jacks altogether, symmetrical arrangement prevents that whole traction beam from producing the distortion because of the inhomogeneous welding that leads to of atress.

It should be noted that, the jack in the embodiment of the present invention may also be replaced by other linear motion mechanisms, for example, a telescopic cylinder, etc., and the embodiment of the present invention does not limit this.

In addition, as shown in fig. 3, in the embodiment of the present invention, each jack may be installed on a beam of one portal frame 8.

Further, with reference to fig. 3, in order to control the reverse deformation amount of the lower cover plate 1, the embodiment of the present invention further provides two columns of spacers 9 on the table top of the workbench 5, wherein the two columns of spacers 9 are relatively disposed on the workbench 5 along the width direction of the workbench 5, the height of the spacers 9 is lower than the height of the supporting member, and the two columns of spacers are respectively located at two side edges of the width direction of the lower cover plate 1.

Specifically, the embodiment of the utility model provides an every side at the width direction of workstation 5 all can be provided with five cushions 9, during the operation, only need down apron 1 lower planar edge with cushion 9 press paste can. The height difference between the cushion block 9 and the support is a specific value of the reverse deformation amount.

Combine fig. 1 and fig. 2, in the embodiment of the utility model, be provided with two at least cavities 10 along the length direction of apron 1 on the apron 1 down, be located all to be provided with first locating piece 11 in two cavities 10 at apron 1's length direction both ends down, first locating piece 11 is fixed to be set up on workstation 5, cavity 10 width direction's one side setting is hugged closely to first locating piece 11, and one side of workstation 5's width direction is provided with first clamping mechanism 12, first clamping mechanism 12 and first locating piece 11 are located the same one side of workstation 5, the width direction that workstation 5 can be followed to first clamping mechanism 12's output is flexible, first clamping mechanism 12's output is operable to be leaned on the lateral part at apron 1's width direction down, just so can fix a position the horizontal of apron down through the three points.

Combine fig. 1 and fig. 2, in the embodiment of the utility model, still be provided with second locating piece 13 on the workstation 5, second locating piece 12 sets up in being close to the cavity 10 that strikes seat 2, one side setting that the cavity 10 was kept away from and strikes seat 2 is hugged closely to second locating piece 12, and still be provided with second clamping mechanism 14 on the workstation 5, second clamping mechanism 14 is located the one side of keeping away from and strikes seat 2, the length direction that workstation 5 can be followed to second clamping mechanism 14's output is flexible, the operable top of second clamping mechanism 14 leans on the lateral part at the length direction of apron 5 down, just so can vertically fix a position apron 1 down through the two points pair, the three point location of upper segment is deuterogamied, the location of apron 1 on workstation 5 down has been accomplished promptly.

With reference to fig. 2, in the embodiment of the present invention, two second supporting blocks 15 are relatively disposed on the working table 5, the two second supporting blocks 15 support the impact base 2, and the heights of the second supporting blocks 15 and the supporting member are kept consistent, so as to realize the positioning of the height direction of the impact base 2, and the impact base 2 and the lower cover plate 1 are located at the same height when the device is equipped.

With reference to fig. 2, the working table 5 of the embodiment of the present invention is further provided with a third positioning block 16, and the third positioning block 16 is disposed on the inner side of the impact base 2 in the width direction; the workbench 5 is further provided with a third clamping mechanism 17 and a fourth clamping mechanism 18, an output end of the third clamping mechanism 17 can extend and retract along the width direction of the workbench 5, an output end of the third clamping mechanism 17 can be operatively abutted against the side part of the impact base 2 in the width direction, an output end of the fourth clamping mechanism 18 can extend and retract along the length direction of the workbench 5, and an output end of the fourth clamping mechanism 18 can be operatively abutted against the side part of the impact base 2 in the length direction. In this way, the third positioning block 16, the third clamping mechanism 17 and the fourth clamping mechanism 18 are arranged, so that the impact base 2 can be positioned in the transverse direction and the longitudinal direction.

It should be noted that each clamping mechanism of the embodiment of the present invention can adopt a screw structure, which can be conveniently disassembled to avoid the influence on the operation of the lower cover plate in reverse deformation. Or when the lower cover plate is subjected to reversible deformation operation, the output ends of the clamping mechanisms are retracted, and the influence generated during the reversible deformation operation of the lower cover plate can be avoided.

Based on above-mentioned draw beam assembly quality, the embodiment of the utility model provides a draw beam assembly method is still provided, and this method specifically includes:

s1: assembling the lower cover plate, the impact seat, the web plate and the partition plate by using the assembling device to finish the primary assembly of the traction beam;

s2: the driving pieces are operated to enable the output ends of the driving pieces to move downwards along the vertical direction, the output ends of the two driving pieces act on the two transverse sides of the lower cover plate, and the lower cover plate part on the outer side of the web plate is subjected to reversible deformation.

The utility model discloses S1 specifically includes:

the method comprises the following steps of (1) clamping a lower cover plate 1 on a workbench in a falling position, and then sequentially hanging an impact base 2 and two webs 3, specifically, adjusting the relative positions of the impact base 2 and the lower cover plate 1 to meet technological requirements and then performing spot welding and fixing, when one side web 3 is assembled, firstly marking an assembly position line of the side web 3 on the lower cover plate 1, taking a first positioning block 11 on the lower cover plate 1 as a reference, matching the position line to ensure the straightness of the web, adjusting the relative positions of the side web 3, the impact base 2 and the lower cover plate 1, and after the technological requirements are met, sequentially performing spot welding and fixing; when the other side web 3 is assembled, the web 3 which is installed firstly is taken as a reference, and the sample plate is utilized to control the relevant sizes such as the distance between the two webs 3 and the like to meet the process requirements;

the assembly of the partition plate 4, in particular, due to the large welding amount of the connecting welding seam and the severe welding shrinkage, which are also the main reasons for the out-of-flatness of the joint of the lower cover plate and the core plate, should strictly follow the sequence and method of spot welding and welding during assembly. During assembly, a single-side groove is machined at the joint of the lower cover plate 1 and the partition plate 4, and then the partition plate 4 and the lower cover plate 1 are connected in a spot welding mode to ensure that no gap exists at the joint, so that welding shrinkage is reduced, because if the partition plate 4 and the web plate 3 are firstly subjected to spot welding, a gap is easily generated between the partition plate 4 and the lower cover plate 1 due to the shape error of the partition plate 4, so that welding shrinkage is increased, and the flatness of the formed parts is affected. When baffle 4 and lower apron 1 welding, at first accomplish one side of baffle 4 and lower apron 1 joint weld, the opposite side treats all other welding seams and accomplishes the back, welds at last, and strictly abide by one side spot welding, the welding order of the first welded of one side that corresponds, this is because, if weld spot welding one side earlier, make the solder joint when the welding, melt along with base metal and welding material together, can't be when the welding, form the support to welding seam both sides base metal, make the welding seam form the back, produce the shrink to both sides base metal, make lower apron 1 produce the deformation of caving in. The second partition plate 4 can be assembled by taking the first partition plate as a positioning reference, ensuring the relative position between the first partition plate and the second partition plate by utilizing template assembly, and performing spot welding on the first partition plate in sequence.

The utility model discloses S2 specifically includes:

the core in S2 of this energy utility model embodiment is to confirm the anti-deformation volume, the utility model discloses the anti-deformation volume of embodiment acquires through formula 1), and this formula 1) is:

when x is more than 0 and less than or equal to 2, y is x + a, and when x is more than 2, y is kx + b.

In the formula 1), y is the inverse deformation amount and has a unit of mm, x is the deformation amount and has a unit of mm, k is a correction coefficient, k is more than 1 and less than 2, and a and b are constants and have a unit of mm.

The embodiment of the utility model provides an in, the definite of anti-deformation volume is through calculating or simulating the test piece of the same type earlier, obtains basic parameter, revises the adjustment through the product trial-manufacturing again and confirms at last.

For example, the deformation after the simulated welding is performed on the same type of test pieces is 3-4 mm, and the above formula 1) is determined through trial adjustment of products:

when x is more than 0 and less than or equal to 2, y is equal to x +0.5, and when x is more than 2, y is equal to 1.4x-0.9, and finally, the effect of offsetting the angular deformation of the lower cover plate when the web plate is welded with the lower cover plate is the best when the reverse deformation amount is 3.5 mm.

To sum up, the embodiment of the utility model provides an accessible assembly spot welding order and welding order to utilize simple and easy equipment when adopting the rigidity fixed, suppress out certain anti-deformation volume, offset the welding deformation that produces after the welding, satisfy the technological requirement after making the product shaping. The small investment replaces the investment of large equipment, the manufacturing period is shortened, and the manufacturing cost of the product is reduced.

The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the limitation of any form, any of the commonly known people in the technical field, if the present invention does not depart from the technical features of the present invention, the present invention utilizes the present invention to make the equivalent embodiment of local change or modification, and does not depart from the technical features of the present invention, which all still belongs to the technical features of the present invention.

Claims (8)

1. The utility model provides a draw beam assembly quality, the draw beam is including the lower apron of equipment together, strike seat, web and baffle, the web is provided with two, two the web sets up the width direction's of apron both sides down, it sets up down to strike the seat one side of the length direction of apron, the baffle is provided with a plurality of, a plurality of the baffle sets up on the apron down, just, a plurality of the width direction's of baffle both ends are connected two on the web, its characterized in that, the assembly quality includes:

a working table is arranged on the upper portion of the machine body,

the two supporting pieces are oppositely arranged on the top of the workbench along the width direction of the workbench, and the lower cover plate is supported by the two supporting pieces;

the driving piece, the driving piece is provided with two, two the driving piece is followed the width direction of workstation sets up relatively, two the driving piece all is located support piece's top, every the output of driving piece is along vertical downward round trip movement, two the output of driving piece is used in two the both sides that the web departed from down on the apron.

2. The draft sill assembly of claim 1, wherein each of the driving members includes a plurality of jacks sequentially spaced above the support member along the length of the table, the output end of each of the jacks reciprocates vertically downward, and the output ends of the jacks of each of the driving members act on the lower cover plate.

3. The draft sill assembly fixture of claim 2, wherein one jack is disposed at a location corresponding to the staking hole of the lower cover plate and the upper center plate, two jacks are disposed between the staking hole and the impact base, and one jack is disposed between the staking hole and an end of the lower cover plate away from the impact base.

4. The draft sill assembly of claim 1, further comprising two columns of spacers disposed on the table opposite to each other in the width direction of the table, wherein the height of the spacers is lower than the height of the support member, and the two columns of spacers are disposed on the edges of the lower cover plate in the width direction, respectively.

5. The draft sill assembly of claim 1, wherein each of said support members includes a plurality of support blocks, said support blocks being sequentially spaced along the length of said table on the top of said table, said support blocks being located below the corresponding mounting web of said lower deck.

6. The draft sill assembly fixture of claim 1, wherein at least two cavities are formed in the lower cover plate along the length direction of the lower cover plate, first positioning blocks are respectively arranged in the two cavities at the two ends of the lower cover plate in the length direction, the first positioning blocks are fixedly arranged on the worktable, and the first positioning blocks are arranged to be attached to one side of the cavities in the width direction;

one side of the width direction of the workbench is provided with a first clamping mechanism, the first clamping mechanism and the first positioning block are positioned on the same side of the workbench, the output end of the first clamping mechanism can stretch along the width direction of the workbench, and the output end of the first clamping mechanism can be operably abutted against the side part of the lower cover plate in the width direction.

7. The draft sill assembly device according to claim 6, wherein a second locating block is disposed on said table and disposed in said cavity adjacent to said shock seat, said second locating block being disposed in close proximity to a side of said cavity remote from said shock seat;

the workbench is further provided with a second clamping mechanism, the second clamping mechanism is located on one side far away from the impact seat, the output end of the second clamping mechanism can stretch along the length direction of the workbench, and the output end of the second clamping mechanism can be operatively abutted against the side part of the lower cover plate in the length direction.

8. The draft sill assembly of claim 1, wherein two second support blocks are oppositely disposed on said table, said two second support blocks supporting said shock mounts;

the workbench is also provided with a third positioning block which is arranged on the inner side of the impact seat in the width direction;

the workbench is also provided with a third clamping mechanism, the output end of the third clamping mechanism can stretch along the width direction of the workbench, and the output end of the third clamping mechanism can be operably abutted against the side part of the impact seat in the width direction;

the workbench is further provided with a fourth clamping mechanism, the output end of the fourth clamping mechanism can stretch along the length direction of the workbench, and the output end of the fourth clamping mechanism can be operably abutted against the side part of the impact seat in the length direction.

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