阅读说明：本技术 一种高精度的汽车副车架夹具 (High-precision automobile auxiliary frame clamp ) 是由 陈勇棠 黄浩 黄师 马靖 罗志满 蓝富仁 蓝丕满 张伶俐 何泽显 杨雲升 雷健泳 于 2020-10-15 设计创作，主要内容包括：本发明公开一种高精度的汽车副车架夹具,包括底座和设在底座上的左夹具组和右夹具组,所述左夹具组和右夹具组沿着副车架的外边缘分布夹持,左夹具组和右夹具组的结构一致并以副车架的中间板为中心镜像对称,所述左夹具组包括中间板夹持单元、上蝶板夹持单元和下蝶板夹持单元；本发明采用中间夹持单元、上蝶板夹持单元和下蝶板夹持单元,将副车架各个部位进行夹持,避免了晃动,实现了夹持的稳定性,便于各种工件的焊接。(The invention discloses a high-precision automobile auxiliary frame clamp which comprises a base, a left clamp group and a right clamp group, wherein the left clamp group and the right clamp group are arranged on the base and are distributed and clamped along the outer edge of an auxiliary frame; according to the auxiliary frame, the middle clamping unit, the upper butterfly plate clamping unit and the lower butterfly plate clamping unit are adopted to clamp all parts of the auxiliary frame, so that shaking is avoided, the clamping stability is realized, and various workpieces can be conveniently welded.)

1. The utility model provides a car sub vehicle frame anchor clamps of high accuracy, includes the base and establishes left anchor clamps group and right anchor clamps group on the base, left side anchor clamps group and right anchor clamps group distribute the centre gripping along the outward flange of sub vehicle frame, and the structure of left anchor clamps group and right anchor clamps group is unanimous and uses the intermediate lamella of sub vehicle frame as central mirror symmetry, its characterized in that: the left clamp group comprises a middle plate clamping unit, an upper butterfly plate clamping unit and a lower butterfly plate clamping unit; the upper butterfly plate clamping unit comprises an L-shaped pressing strip I, a driving device I for driving the L-shaped pressing strip I to be pressed and loosened up and down, a mounting hole positioning device and a reinforcing rib plate induction clamping device; the driving device I is arranged on the base; the mounting hole positioning device comprises an upper pressing block I, a telescopic positioning pin I, an air cylinder I and a support I, wherein the upper pressing block I is aligned with the mounting hole of the upper butterfly plate; the upper pressing block I is arranged above the upper butterfly plate mounting hole and is fixedly connected with one end of the L-shaped pressing strip I; the telescopic positioning pin I is arranged right below the upper butterfly plate mounting hole and connected with the air cylinder I and driven by the air cylinder I to stretch up and down; the cylinder I is arranged in the support I, and the support I is fixed on the base; the reinforcing rib plate induction clamping device comprises an upper pressing frame for pressing a lower flanging of a reinforcing rib plate, a thimble, an L-shaped upper pressing block II, an installation frame I, a spring, an annular clamping piece and an inductor; the upper pressing frame, the thimble and the upper pressing block II are arranged right above the lower flanging of the reinforcing rib plate; the upper pressing frame, the ejector pin and the upper pressing block II are respectively provided with a lower pressing block I, a lower pressing block II and a lower pressing block III which are matched and pressed with the upper pressing frame, the ejector pin and the upper pressing block II, and the lower pressing block I, the lower pressing block II and the lower pressing block III are fixedly connected with the base; the upper pressing frame is fixedly connected with the other end of the L-shaped pressing strip I, and the mounting frame I is arranged on one side of the upper pressing frame; the upper pressing block II is arranged on the other side of the upper pressing frame; the mounting frame I is an inverted F-shaped structure consisting of a vertical plate and two transverse plates; the sensor is arranged at the upper ends of vertical plates of the mounting frame I, the ejector pins penetrate through the transverse plates of the two mounting frames I to be vertically arranged, the springs and the annular clamping pieces are arranged on the ejector pins and located between the two transverse plates, the upper ends of the springs are fixedly connected with the upper transverse plate, the lower ends of the springs are fixedly connected with the annular clamping pieces, and the annular clamping pieces are fixedly clamped on the ejector pins; when the ejector pin presses the lower turned edge of the reinforcing rib plate, the spring is compressed until the upper end of the ejector pin is level with the detection head of the inductor; when no reinforcing rib plate is arranged below the ejector pin, the spring is recovered, and the detection head of the inductor is higher than the top end of the ejector pin.

2. The high-precision automobile subframe clamp as claimed in claim 1, wherein: the lower butterfly plate clamping unit comprises an L-shaped pressing strip II and a driving device II for driving the pressing strip II to vertically compress and release, the driving device II is installed on the base, one edge of the L-shaped pressing strip II is aligned to the lower edge of the lower butterfly plate, and the lower surface of the edge is provided with an upper pressing block III for compressing an upper flanging of the reinforcing rib plate and an upper pressing block IV for compressing the lower butterfly plate; the other side of the L-shaped pressing strip II extends to the joint of the upper butterfly plate and the lower butterfly plate, and the lower surface of the side is provided with an upper pressing block V for pressing the lower butterfly plate; a lower pressing block IV, a lower pressing block V and a lower pressing block VI which are matched and compressed with the upper pressing block III, the upper pressing block IV and the upper pressing block V are respectively arranged below the upper pressing block III, the upper pressing block IV and the upper pressing block V; the lower surface of the lower pressing block IV is also provided with a rear clamping block I for clamping a reinforcing rib plate vertical plate; the rear clamping block I is fixed on the base, and a front clamping block I for clamping a reinforcing rib plate vertical plate is arranged in front of the rear clamping block I; the front clamping block I is connected with the upper pressing block IV; a lower pressing block VII matched with the front clamping block I and used for pressing the lower butterfly plate is further arranged below the front clamping block I; and the lower pressing block VII is fixed on the base through a corresponding support II.

3. The high-precision automobile subframe clamp as claimed in claim 2, wherein: the distance between the front clamping block I and the rear clamping block I is the same as the thickness of the reinforcing rib plate vertical plate.

4. The high-precision automobile subframe clamp as claimed in claim 1, wherein: the middle plate clamping unit comprises a Z-shaped pressing strip and a driving device III for driving the Z-shaped pressing strip to be pressed and loosened up and down, and the driving device III is arranged on the base; the upper folded edge of the Z-shaped pressing strip is clamped at the edge of the side wall of the middle plate, and the lower surface of the lower transverse edge of the Z-shaped pressing strip is provided with an upper pressing block VI for pressing the middle plate; the upper pressing block VI is of a double-folded strip-shaped structure extending from the front end to the rear end of the middle plate; and a lower pressing block VIII which is matched and compressed with the upper pressing block VI is arranged below the upper pressing block VI, and the lower pressing block VIII is fixed on the base.

5. The high precision automobile subframe clamp as claimed in any one of claims 1-4, wherein: an auxiliary positioning unit is arranged between the upper butterfly plate clamping unit and the lower butterfly plate clamping unit and comprises a positioning vertical plate and a bottom plate; the positioning vertical plate is fixed on the base through the bottom plate, an L-shaped positioning block is arranged on the front surface of the positioning vertical plate, and the L-shaped positioning block is abutted against the reinforcing rib plate vertical plate.

6. The high-precision automobile subframe clamp as claimed in claim 5, wherein: and a welding slag protective seat is arranged behind the positioning vertical plate, and a welding slag protective plate is arranged on the surface of the welding slag protective seat.

7. The high precision automobile subframe clamp as claimed in any one of claims 1-4, wherein: and the driving device I, the driving device II and the driving device III are driven by adopting air cylinders.

8. The high-precision automobile subframe clamp as claimed in claim 1, wherein: the sensor adopts an infrared sensor.

Technical Field

The invention belongs to the field of automobile workpiece clamps, and particularly relates to a high-precision automobile auxiliary frame clamp.

Background

The subframe can be regarded as a framework of the front axle and the rear axle, and is a component of the front axle and the rear axle. The auxiliary frame is not a complete frame, but only supports the front and rear axles and the suspension bracket, so that the axles and the suspension bracket are connected with a 'front frame' through the auxiliary frame, the auxiliary frame has the functions of isolating vibration and noise and reducing direct entering of the auxiliary frame into a carriage, so that most of the auxiliary frame is arranged on luxurious cars and off-road vehicles, and some vehicles are also provided with auxiliary frames for engines.

As shown in fig. 7, the subframe is a bilateral structure, and includes a middle plate, and an upper butterfly plate and a lower butterfly plate disposed at two ends of the middle plate, in order to support the front and rear axles, reinforcing ribs are welded on the upper butterfly plate and the lower butterfly plate, the reinforcing ribs are curved vertical plates, a lower flange is disposed at the front end of the vertical plates, corresponding mounting holes are disposed on the lower flange and the subframe, and an upper flange is disposed at the rear end of the vertical plates.

At present, the auxiliary frame need weld in process of production, need use fixing device to fix the frame in welding process, need guarantee the absolute stability of auxiliary frame at whole in-process, otherwise can influence the welding quality of auxiliary frame, in case the welding of auxiliary frame goes wrong, then leads to the auxiliary frame very easily to appear the damage in the use.

The conventional fixing device fixes the auxiliary frame through a fixed groove body or clamps the auxiliary frame through a simple clamping piece; the former is inconvenient to operate, especially for the sub-frame of different sizes, the latter is then not enough to the clamping force of sub-frame, in welding process, the sub-frame is very easily appeared rocking.

The current patent is identified by application number 201510923190.9, title: a multi-side compressing device for an auxiliary frame comprises a base, wherein a plurality of corner compressing mechanisms and supporting mechanisms are arranged on the top of the base; the corner pressing mechanism comprises a first driving unit, a supporting plate and a pressing rod, wherein the first driving unit and the supporting plate are arranged on the top of the base, and the pressing rod is hinged to a driving rod of the first driving unit; the supporting mechanism comprises a supporting seat arranged on the top of the base, a fixing groove is arranged on the top of the supporting seat, and a clamping rod is fixed on the fixing groove through a fixing piece; wherein, place in the condition at the top of backup pad at the sub vehicle frame, first drive unit can drive the actuating lever motion so that the bottom of depression bar can conflict the corner at the top of sub vehicle frame and actuating lever and depression bar pass through the mounting with the depression bar and fix, and the clamping bar can pass through the setting element along the fixed slot motion with the side and the supporting seat and the clamping bar of conflict sub vehicle frame and fix. This scheme has realized the absolute stability of sub vehicle frame, still need handheld work piece when welding the reinforcing floor, does not treat the welded work piece and stabilizes, therefore welding accuracy still can receive the influence.

Disclosure of Invention

The invention aims to solve the technical problems and provides a high-precision automobile subframe clamp which is stable in clamping and high in machining precision.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a high-precision automobile auxiliary frame clamp comprises a base, a left clamp group and a right clamp group, wherein the left clamp group and the right clamp group are arranged on the base; the left clamp group and the right clamp group are distributed and clamped along the outer edge of the auxiliary frame, the left clamp group and the right clamp group are consistent in structure and are in mirror symmetry by taking a middle plate of the auxiliary frame as a center; the left clamp group comprises a middle plate clamping unit, an upper butterfly plate clamping unit and a lower butterfly plate clamping unit; the upper butterfly plate clamping unit comprises an L-shaped pressing strip I, a driving device I for driving the L-shaped pressing strip I to be pressed and loosened up and down, a mounting hole positioning device and a reinforcing rib plate induction clamping device; the driving device I is installed on the base, and the mounting hole positioning device comprises an upper pressing block I, a telescopic positioning pin I, an air cylinder I and a support I, wherein the upper pressing block I is aligned with the mounting hole of the upper butterfly plate; the upper pressing block I is arranged above the upper butterfly plate mounting hole and is fixedly connected with one end of the L-shaped pressing strip I; the telescopic positioning pin I is arranged right below the upper butterfly plate mounting hole, the telescopic positioning pin I is connected with the air cylinder I and driven by the air cylinder I to stretch up and down, the air cylinder I is arranged in the support I, and the support I is fixed on the base; the reinforcing rib plate induction clamping device comprises an upper pressing frame for pressing a lower flanging of a reinforcing rib plate, a thimble, an L-shaped upper pressing block II, an installation frame I, a spring, an annular clamping piece and an inductor; the upper pressing frame, the thimble and the upper pressing block II are arranged right above the lower flanging of the reinforcing rib plate; the upper pressing frame, the ejector pin and the upper pressing block II are respectively provided with a lower pressing block I, a lower pressing block II and a lower pressing block III which are matched and pressed with the upper pressing frame, the ejector pin and the upper pressing block II, and the lower pressing block I, the lower pressing block II and the lower pressing block III are fixedly connected with the base; the upper pressing frame is fixedly connected with the other end of the L-shaped pressing strip I, the mounting frame I is arranged on one side of the upper pressing frame, and the upper pressing block II is arranged on the other side of the upper pressing frame; the mounting frame I is an inverted F-shaped structure consisting of a vertical plate and two transverse plates; the sensor is arranged at the upper ends of vertical plates of the mounting frame I, the ejector pins penetrate through the transverse plates of the two mounting frames I to be vertically arranged, the springs and the annular clamping pieces are arranged on the ejector pins and located between the two transverse plates, the upper ends of the springs are fixedly connected with the upper transverse plate, the lower ends of the springs are fixedly connected with the annular clamping pieces, and the annular clamping pieces are fixedly clamped on the ejector pins; when the ejector pin presses the lower turned edge of the reinforcing rib plate, the spring is compressed until the upper end of the ejector pin is level with the detection head of the inductor; when no reinforcing rib plate is arranged below the ejector pin, the spring is recovered, and the detection head of the inductor is higher than the top end of the ejector pin.

As a further technical scheme, the lower butterfly plate clamping unit comprises an L-shaped pressing strip II and a driving device II for driving the pressing strip II to be pressed and loosened up and down, and the driving device II is arranged on the base; one side of the L-shaped pressing strip II is aligned with the lower edge of the lower butterfly plate, and the lower surface of the side is provided with an upper pressing block III for pressing the upper flanging of the reinforcing rib plate and an upper pressing block IV for pressing the lower butterfly plate; the other side of the L-shaped pressing strip II extends to the joint of the upper butterfly plate and the lower butterfly plate, and the lower surface of the side is provided with an upper pressing block V for pressing the lower butterfly plate; a lower pressing block IV, a lower pressing block V and a lower pressing block VI which are matched and compressed with the upper pressing block III, the upper pressing block IV and the upper pressing block V are respectively arranged below the upper pressing block III, the upper pressing block IV and the upper pressing block V; the lower surface of the lower pressing block IV is also provided with a rear clamping block I for clamping a vertical plate of the reinforcing rib plate, the rear clamping block I is fixed on the base, and a front clamping block I for clamping the vertical plate of the reinforcing rib plate is arranged in front of the rear clamping block I; the front clamping block I is connected with the upper pressing block IV, a lower pressing block VII matched with the front clamping block I and used for pressing the lower butterfly plate is further arranged below the front clamping block I, and the lower pressing block VII is fixed on the base through a corresponding support II.

As a further technical scheme, the distance between the front clamping block I and the rear clamping block I is the same as the thickness of the reinforcing rib plate vertical plate.

As a further technical scheme, the middle plate clamping unit comprises a Z-shaped pressing strip and a driving device iii for driving the Z-shaped pressing strip to be pressed and loosened up and down, the driving device iii is installed on the base, an upper folding edge of the Z-shaped pressing strip is connected to the edge of the side wall of the middle plate in a clamping mode, an upper pressing block vi for pressing the middle plate is arranged on the lower surface of the lower transverse edge of the Z-shaped pressing strip, the upper pressing block vi is a double-folded strip-shaped structure extending from the front end to the rear end of the middle plate, a lower pressing block viii matched with the upper pressing block vi in a pressing mode is arranged below the upper pressing block vi, and the lower pressing block viii is fixed on the base.

As a further technical scheme, an auxiliary positioning unit is further arranged between the upper butterfly plate clamping unit and the lower butterfly plate clamping unit, the auxiliary positioning unit comprises a positioning vertical plate and a bottom plate, the positioning vertical plate is fixed on the base through the bottom plate, an L-shaped positioning block is arranged on the front surface of the positioning vertical plate, and the L-shaped positioning block abuts against the reinforcing rib plate vertical plate.

As a further technical scheme, a welding slag protection seat is arranged behind the positioning vertical plate, and a welding slag protection plate is arranged on the surface of the welding slag protection seat.

As a further technical scheme, the driving device I, the driving device II and the driving device III are driven by air cylinders.

As a further technical scheme, the sensor adopts an infrared sensor.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the auxiliary frame, the middle clamping unit, the upper butterfly plate clamping unit and the lower butterfly plate clamping unit are adopted to clamp all parts of the auxiliary frame, so that shaking is avoided, the clamping stability is realized, and the welding of the reinforcing rib plate is facilitated.

2. The upper butterfly plate clamping unit and the lower butterfly plate clamping unit can clamp and position the reinforcing rib plate to be welded while clamping the auxiliary frame, so that the welding processing precision of the auxiliary frame is improved.

3. According to the upper butterfly plate clamping unit, one end of the L-shaped pressing strip I is accurately positioned and clamped by the telescopic positioning pin and the upper pressing block I aiming at the upper butterfly plate mounting hole, and the other end of the L-shaped pressing strip I is used for tightly pressing the lower flanging of the reinforcing rib plate through the ejector pin, the upper pressing frame and the upper pressing block II of the reinforcing rib plate induction clamping device, so that the whole reinforcing rib plate is tightly pressed on the upper butterfly plate, and the welding processing precision is improved.

4. The lower butterfly plate clamping unit is provided with an upper pressing block II and a lower pressing block I aiming at the upward flanging of the reinforcing rib plate, the upward flanging of the reinforcing rib plate is clamped, a rear clamping block I and a front clamping block I aiming at the vertical plate of the reinforcing rib plate are designed, the vertical plate of the reinforcing rib plate is clamped, the clamping stability of the reinforcing rib plate is realized from the upper direction, the lower direction, the front direction and the rear direction, the lower butterfly plate is synchronously pressed while the reinforcing rib plate is clamped, and the reinforcing rib plate is accurately and stably welded on an auxiliary frame by matching with the accurate positioning of the upper butterfly plate clamping unit.

5. The invention also designs an auxiliary positioning unit, and the L-shaped positioning block is adopted to support the middle part of the vertical plate of the reinforcing rib plate in an abutting mode, so that the welding stability is further improved.

6. According to the middle plate clamping unit, the upper folded edge of the Z-shaped pressing strip is clamped on the edge of the side wall of the middle plate, so that the auxiliary frame is prevented from shifting; the upper pressing block V extends to the rear end from the front end of the middle plate and is matched with the corresponding lower pressing block IV to compress and position the whole middle plate, and the clamping stability of the auxiliary frame is realized.

Drawings

FIG. 1 is a schematic structural diagram of a high-precision automobile subframe clamp according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic structural diagram of a driving device I of the upper butterfly plate clamping unit according to the present invention;

FIG. 4 is a schematic structural diagram of a driving device II of the lower butterfly plate clamping unit according to the present invention;

FIG. 5 is a schematic structural view of the lower butterfly plate clamping unit of the present invention after hiding the power device;

FIG. 6 is a schematic structural view of the thimble according to the present invention;

FIG. 7 is a diagram showing a clamping state of the high-precision subframe clamp of the present invention.

Reference numerals:

1-upper butterfly plate clamping unit, 1.1-mounting frame II, 1.2-air cylinder I, 1.3-clamping block I, 1.4-clamping arm I, 1.5-L-shaped press bar I, 1.6-upper press block I, 1.7-telescopic positioning pin I, 1.8-support I, 1.9-upper press frame, 1.10-ejector pin, 1.11-upper press block II, 1.12-mounting frame I, 1.13-spring, 1.14-annular clamping piece, 1.15-inductor, 1.16-lower press block I, 1.17-lower press block II, 1.18-lower press block III.

2-a lower butterfly plate clamping unit, 2.1-a mounting frame III, 2.2-a cylinder II, 2.3-a clamping block II, 2.4-a clamping arm II, 2.5-an L-shaped press bar II, 2.6-an upper press block III, 2.7-an upper press block IV, 2.8-an upper press block V, 2.9-a lower press block IV, 2.10-a lower press block V, 2.11-a lower press block VI, 2.12-a rear clamp block I, 2.13-a front clamp block I, 2.14-a lower press block VII and 2.15-a support II;

3-a middle plate clamping unit, 3.1-a driving device III, 3.2-a Z-shaped pressing bar, 3.3-an upper pressing block VI and 3.4-a lower pressing block VIII;

4-auxiliary positioning unit, 4.1-bottom plate, 4.2-positioning vertical plate, 4.3-welding slag protection seat and 4.4-L-shaped positioning block;

5-a base; 6-auxiliary frame, 6.1-middle plate, 6.2-upper butterfly plate, 6.3-lower butterfly plate and 6.4-upper butterfly plate mounting hole;

7-reinforcing rib plate, 7.1-lower flanging of reinforcing rib plate, 7.2-vertical plate of reinforcing rib plate and 7.3-upper flanging of reinforcing rib plate.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited to the scope of the examples.

According to the invention, the subframe 6 and the reinforcing rib plate 7 are conventional welding parts in the field, the reinforcing rib plate 7 comprises a reinforcing rib plate vertical plate 7.2, a reinforcing rib plate upper flange 7.3 and a reinforcing rib plate lower flange 7.1, the reinforcing rib plate upper flange 7.3 and the reinforcing rib plate lower flange 7.1 are respectively connected with the reinforcing rib plate vertical plate 7.2, during welding, the reinforcing rib plate upper flange 7.3 is positioned at the lower butterfly plate 6.3 of the subframe 6, and the reinforcing rib plate lower flange 7.1 is positioned at the upper butterfly plate 6.2 of the subframe 6.

Example 1:

a high-precision automobile auxiliary frame clamp comprises a base 5, and a left clamp group and a right clamp group which are arranged on the base 5, wherein the left clamp group and the right clamp group are distributed and clamped along the outer edge of an auxiliary frame 6, the left clamp group and the right clamp group are consistent in structure and are in mirror symmetry by taking a middle plate 6.1 of the auxiliary frame 6 as a center, and the left clamp group comprises a middle plate clamping unit 3, an upper butterfly plate clamping unit 1 and a lower butterfly plate clamping unit 2; the upper butterfly plate clamping unit 1 comprises an L-shaped pressing strip I1.5, a driving device I (namely a cylinder I) for driving the L-shaped pressing strip I1.5 to be pressed and loosened up and down, a mounting hole positioning device and an induction clamping device of a reinforcing rib plate 7, the driving device I is installed on the base 5, the driving device II comprises an installation frame II 1.1, an air cylinder I1.2, a clamping block I1.3 and a clamping arm I1.4, the installation frame II 1.1 is arranged on the base 5, the air cylinder I1.2 is vertically installed on the installation frame II 1.1, the upper end of the air cylinder I1.2 is connected with the clamping block I1.3, the clamping block I1.3 horizontally clamps or loosens the replaceable clamping arm I1.4, the clamping arm I1.4 is connected with an L-shaped batten I1.5 installation hole positioning device which comprises an upper pressing block I1.6 aligned with an upper butterfly plate installation hole 6.4, a telescopic positioning pin I1.7, an air cylinder I1.2 and a support I1.8, and the upper pressing block I1.6 is arranged above the upper butterfly plate installation hole 6.4 and fixedly connected with one end of the L-shaped batten I1.5; the telescopic positioning pin I1.7 is arranged right below the upper butterfly plate mounting hole 6.4, the telescopic positioning pin I1.7 is connected with the air cylinder I1.2 and driven by the air cylinder I1.2 to be telescopic up and down, the air cylinder I1.2 is arranged in the support I1.8, and the support I1.8 is fixed on the base 5; the induction clamping device of the reinforcing rib plate 7 comprises an upper pressing frame 1.9 for pressing a reinforcing rib plate lower flanging 7.1, an ejector pin 1.10, an L-shaped upper pressing block II 1.11, an installation frame I1.12, a spring 1.13, an annular clamping piece 1.14 and an inductor 1.15, wherein the upper pressing frame 1.9, the ejector pin 1.10 and the upper pressing block II 1.11 are arranged right above the reinforcing rib plate lower flanging 7.1, the upper pressing frame 1.9, the ejector pin 1.10 and the upper pressing block II 1.11 are respectively provided with a lower pressing block I1.16, a lower pressing block II 1.17 and a lower pressing block III 1.18 which are matched and pressed with the upper pressing block I1.9, the lower pressing block II 1.17 and the lower pressing block III 1.18, and the base 5 are fixedly connected; the upper pressing frame 1.9 is fixedly connected with the other end of the L-shaped pressing strip I1.5, the mounting frame I1.12 is arranged on one side of the upper pressing frame 1.9, the upper pressing block II 1.11 is arranged on the other side of the upper pressing frame 1.9, and the mounting frame I1.12 is of an inverted F-shaped structure consisting of a vertical plate and two transverse plates; the sensor 1.15 is arranged at the upper end of a vertical plate of the mounting frame I1.12, the thimble 1.10 penetrates through the two horizontal plates of the mounting frame I1.12 to be vertically arranged, the spring 1.13 and the annular clamping piece 1.14 are arranged on the thimble 1.10 and positioned between the two horizontal plates, the upper end of the spring 1.13 is fixedly connected with the upper horizontal plate, the lower end of the spring 1.13 is fixedly connected with the annular clamping piece 1.14, and the annular clamping piece 1.14 is fixedly clamped on the thimble 1.10; when the thimble 1.10 presses on the lower flanging 7.1 of the reinforcing rib plate, the spring 1.13 is compressed until the upper end of the thimble 1.10 is level with the detection head of the inductor 1.15; when no reinforcing rib plate 7 is arranged below the thimble 1.10, the spring 1.13 is restored, and the detection head of the inductor 1.15 is higher than the top end of the thimble 1.10.

The lower butterfly plate clamping unit 2 comprises an L-shaped pressing strip II 2.5 and a driving device II for driving the pressing strip II to be pressed and released up and down, the driving device II is installed on the base 5 and comprises a mounting rack III 2.1, an air cylinder II 2.2, a clamping block II 2.3 and a clamping arm II 2.4, the mounting rack III 2.1 is arranged on the base 5, the air cylinder II 2.2 is horizontally installed on the mounting rack III 2.1, the upper end of the air cylinder II 2.2 is connected with the clamping block II 2.3, the clamping block II 2.3 horizontally clamps or releases the replaceable clamping arm II 2.4, the clamping arm II 2.4 is connected with the L-shaped pressing strip II 2.5, one side of the L-shaped pressing strip II 2.5 is aligned to the lower edge of the lower butterfly plate 6.3, and the lower surface of the side is provided with an upper pressing block III 2.6 for pressing the upper flanging 7.3 of the reinforcing rib plate and an upper pressing block IV 2.7 for pressing the lower butterfly plate 6.3; the other edge of the L-shaped pressing strip II 2.5 extends to the joint of the upper butterfly plate 6.2 and the lower butterfly plate 6.3, and the lower surface of the edge is provided with an upper pressing block V2.8 for pressing the lower butterfly plate 6.3; a lower pressing block IV 2.9, a lower pressing block V2.10 and a lower pressing block VI 2.11 which are matched and compressed with the upper pressing block III 2.6, the upper pressing block IV 2.7 and the upper pressing block V2.8 are respectively arranged below the upper pressing block III; the lower surface of the lower pressing block IV 2.9 is also provided with a rear clamping block I2.12 for clamping a reinforcing rib plate vertical plate 7.2, the rear clamping block I2.12 is fixed on the base 5, a front clamping block I2.13 for clamping the reinforcing rib plate vertical plate 7.2 is arranged in front of the rear clamping block I2.12, the front clamping block I2.13 is connected with the upper pressing block IV 2.7, a lower pressing block VII 2.14 matched with the front clamping block I2.13 and used for pressing the lower butterfly plate 6.3 is further arranged below the front clamping block I2.13, and the lower pressing block VII 2.14 is fixed on the base 5 through a corresponding support II 2.15.

The distance between the front clamping block I2.13 and the rear clamping block I2.12 is the same as the thickness of the reinforcing rib plate vertical plate 7.2.

The middle plate clamping unit 3 comprises a Z-shaped pressing strip 3.2 and a driving device III 3.1 for driving the Z-shaped pressing strip 3.2 to be pressed and loosened up and down, the driving device III 3.1 is installed on a base 5, the driving device III 3.1 is installed on the base 5, the structure of the driving device III 3.1 is the same as that of a driving device II, an upper folded edge of the Z-shaped pressing strip 3.2 is connected to the edge of the side wall of the middle plate 6.1 in a clamped mode, an upper pressing block VI 3.3 for pressing the middle plate 6.1 is arranged on the lower surface of the lower transverse edge of the Z-shaped pressing strip 3.2, the upper pressing block VI 3.3 is of a double-folded strip-shaped structure extending from the front end to the rear end of the middle plate 6.1, a lower pressing block VIII 3.4 matched with the upper pressing block VI 3.3 in a pressed down mode is arranged below the upper pressing block VI 3.3, and the lower pressing block VIII 3.4 is fixed on the base 5.

Between last butterfly plate clamping unit 1 and lower butterfly plate clamping unit 2, still be equipped with auxiliary positioning unit 4, auxiliary positioning unit 4 includes location riser 4.2 and bottom plate 4.1, and location riser 4.2 is fixed on base 5 by bottom plate 4.1, and the front surface of location riser 4.2 is equipped with L shape locating piece 4.4, and L shape locating piece 4.4 butt is on reinforcing floor riser 7.2.

A welding slag protective seat 4.3 is arranged at the rear part of the positioning vertical plate 4.2, and a welding slag protective plate is arranged on the surface of the welding slag protective seat 4.3.

And the driving device I, the driving device II and the driving device III 3.1 are driven by adopting air cylinders.

The working principle of the invention is as follows:

as shown in fig. 7, before the subframe 6 and the reinforcing rib plate 7 are placed, the pressing strips of the upper butterfly plate clamping unit 1, the middle plate clamping unit 3 and the lower butterfly plate clamping unit 2 are all opened, the telescopic positioning pin i 1.7 is extended out by the control cylinder, and the subframe 6 and the reinforcing rib plate 7 are sequentially placed, wherein the telescopic positioning pin i 1.7 is inserted into the upper butterfly plate mounting hole 6.4 of the subframe 6, the lower butterfly plate 6.3 is overlapped on the lower pressing block v 2.10 and the lower pressing block vii 2.14, the reinforcing rib plate lower flanging 7.1 is overlapped on the lower pressing block i 1.16, the lower pressing block ii 1.17 and the lower pressing block iii 1.18, and the reinforcing rib plate upper flanging 7.3 is overlapped on the lower pressing block iv 2.9.

Then start the cylinder of upper butterfly plate clamping unit 1, intermediate lamella clamping unit 3 and lower butterfly plate clamping unit 2, push down the layering to each upper press block pushes down the lower press block/flexible locating pin that corresponds, has realized the firm centre gripping of sub vehicle frame 6 and reinforcing floor 7, and inductor 1.15 senses thimble 1.10 top, and inductor 1.15 sends welding signal for third party welding equipment, carries out welding operation again. After the welding is finished, the cylinder is started to open the pressing strip, and the welded auxiliary frame 6 can be taken out.

The sensor 1.15 adopts an infrared sensor, and the transmission mode of the infrared sensor and third-party welding equipment is a conventional connection mode in the field and is not included in the protection range of the scheme, so that detailed description is not carried out.

In the invention, the middle plate clamping unit 3, the upper butterfly plate clamping unit 1 and the lower butterfly plate clamping unit 2 can be adjusted in position according to the size of the auxiliary frame 6, and the device is flexible and convenient. The size and the interval of each module are also finely adjusted according to the positions of the mounting holes of the subframe 6 and the shape and the size of the reinforcing rib 7.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "leading," "trailing," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention. It is also to be understood that, unless expressly stated or limited otherwise, the terms "connected" and "coupled" are intended to be open-ended, i.e., may be fixedly connected; can be a detachable connection; or may be a point connection; may be a direct connection; may be indirectly connected through an intermediate medium, may communicate between the two elements, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations. The connection of the devices, which is not described in detail in the present invention, is understood in the conventional manner in the art.

The above-described embodiments are only specific examples for further explaining the object, technical solution and advantageous effects of the present invention in detail, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the present disclosure are included in the protection scope of the present invention.