Touring car bottom plate framework tailor-welding device

Abstract

The invention relates to the technical field of motor home bottom plate welding, and discloses a motor home bottom plate framework tailor-welding device which comprises a welding table and a moving table and further comprises a U-shaped cross beam clamping block, two sets of symmetrically-distributed first telescopic pieces are installed on the moving table, and the telescopic ends of the first telescopic pieces are fixedly connected with the U-shaped cross beam clamping block; the elastic pre-positioning assemblies are arranged on the two sides of the U-shaped cross beam clamping block and used for conducting elastic pre-clamping positioning on the cross beam placed in the U-shaped cross beam clamping block. The limiting assembly is arranged at the bottom of the U-shaped cross beam clamping block, connected with the elastic pre-positioning assembly and used for being matched with the elastic pre-positioning assembly to achieve centering elastic pre-clamping positioning of the cross beam in the U-shaped cross beam clamping block; according to the clamping device, the cross beam can be quickly adjusted and clamped, the position of the cross beam between the two longitudinal beams does not need to be manually and repeatedly adjusted, the operation process is simple, the production efficiency and the welding quality are remarkably improved, and the labor cost and the safety risk are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor home bottom plate welding, in particular to a motor home bottom plate framework assembly welding device. BACKGROUND

[0002] The automobile bottom plate framework is the part of the load-bearing body corresponding to the frame, which is the basis of the body, supporting the weight of the upper body, opening and closing parts, other assemblies and related accessories, and passengers, and at the same time, it bears the load, vibration, impact and torque generated during the movement of the automobile. The automobile bottom plate framework is generally composed of cross beams and longitudinal beams, and the cross beams and longitudinal beams are fixed after assembly and then welded.

[0003] In the prior art, the longitudinal beams are fixed by the positioning mechanism and moved to the assembly welding station, and then the movable clamping mechanism clamps the placed cross beam and moves it between the two longitudinal beams for welding.

[0004] However, in the process of clamping the cross beam, the prior art lacks automatic positioning and gap control structure, and manual adjustment of the position of the cross beam between the two longitudinal beams is required to calibrate the relative position of the cross beam and the longitudinal beam, so as to ensure that the welding gap of the cross beam and the longitudinal beam meets the process requirements. However, the whole cross beam adjustment and clamping process is complicated, which seriously restricts the welding efficiency, and manual operation is prone to random errors, which may cause uneven weld penetration and incomplete penetration. Additional processes such as flame correction and repair welding are required, which not only increases the production process, but also easily damages the performance of the profile base material, reducing the load-bearing reliability of the motor home bottom plate framework. SUMMARY

[0005] The purpose of the present application is to provide a motor home bottom plate framework assembly welding device to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: A motor home bottom plate framework assembly welding device, comprising a welding table and a moving table, further comprising: A U-shaped cross beam clamping block, two groups of symmetrically distributed first extension pieces are installed on the moving table, and the extension end of the first extension piece is fixedly connected with the U-shaped cross beam clamping block; A elastic pre-positioning assembly, the elastic pre-positioning assembly is arranged on both sides of the U-shaped cross beam clamping block, and is used for pre-clamping and positioning the cross beam placed in the U-shaped cross beam clamping block; A limiting assembly, the limiting assembly is arranged at the bottom of the U-shaped cross beam clamping block and connected with the elastic pre-positioning assembly, and is used for realizing the center pre-clamping and positioning of the cross beam in the U-shaped cross beam clamping block in cooperation with the elastic pre-positioning assembly; The adjusting assembly is arranged between the U-shaped beam clamping block and the moving table, and the first telescopic piece drives the U-shaped beam clamping block to ascend, and the elastic pre-positioning assembly is used to realize the self-adaptive adjustment of the position of the beam in the U-shaped beam clamping block. The beam clamping assembly is arranged on the outer side of the moving table, and when the first telescopic piece drives the beam in the U-shaped beam clamping block to move between the two longitudinal beams, the U-shaped beam clamping block clamps and positions the beam. The moving assembly is arranged in the middle of the welding table and is used to drive the moving table to move. The adjusting assembly is arranged between the U-shaped beam clamping block and the moving table, and the first telescopic piece drives the U-shaped beam clamping block to ascend, and the elastic pre-positioning assembly is used to realize the self-adaptive adjustment of the position of the beam in the U-shaped beam clamping block. The longitudinal beam clamping assembly is arranged on the adjusting assembly and is used to clamp and position the longitudinal beam.

[0007] As a preferred technical scheme of the present application, the elastic pre-positioning assembly comprises a sliding rod arranged on both sides of the U-shaped beam clamping block, one end of the sliding rod located in the U-shaped beam clamping block is provided with a positioning plate, and the other end of the sliding rod away from the positioning plate is provided with a movable plate, and an elastic piece is arranged between the movable plate and the U-shaped beam clamping block and is sleeved on the sliding rod.

[0008] As a preferred technical scheme of the present application, the limiting assembly comprises a limiting box arranged at the bottom of the U-shaped beam clamping block, limiting grooves are formed at the both sides of the limiting box in a staggered manner, limiting rods connected with the movable plates are slidably arranged in the limiting grooves, the limiting rods located in the limiting box and close to the sides are provided with racks, a rotating shaft is rotatably arranged in the middle of the limiting box, and a gear meshing with the racks is arranged on the rotating shaft.

[0009] As a preferred technical scheme of the present application, the adjusting assembly comprises two adjusting plates symmetrically distributed on the moving table, a sliding groove is formed at the bottom of the adjusting plate, symmetrical slide rails are arranged at the both sides of the top of the moving table and slidably cooperate with the sliding groove, drive plates are arranged at the both sides of the top of the adjusting plate, a drive groove is arranged on the drive plate and comprises a vertical groove and an inclined groove, two groups of drive rods symmetrically distributed are arranged at the both sides of the bottom of the U-shaped beam clamping block, and drive columns slidably cooperating with the drive groove are arranged at the ends of the drive rods away from the U-shaped beam clamping block.

[0010] As a preferred technical scheme of the present application, the beam clamping assembly comprises a clamping arm arranged on the outer side of the moving table, two clamping heads symmetrically distributed and opposite to the U-shaped beam clamping block are arranged at the top of the clamping arm, and limiting baffle plates are arranged at the both sides of the clamping head.

[0011] As a preferred technical scheme of the present application, the moving assembly comprises side plates installed at two ends of the welding table, a guide rod slidably connected with one end of the moving table is installed between the side plates, the other end of the moving table is threadedly connected with a moving screw rotatably connected with the side plates, and a second driving member connected with the moving screw is installed on the side plate.

[0012] As a preferred technical scheme of the present application, the regulating assembly comprises moving grooves symmetrically arranged on both sides of the welding table, two moving grooves are arranged on each side, a moving block is slidably arranged in each moving groove, a bidirectional screw threadedly connected with the moving block is rotatably arranged in each moving groove, a synchronous frame fixedly connected with the moving block is arranged on the same side of the welding table, and a synchronous driving member is connected with the bidirectional screw.

[0013] As a preferred technical scheme of the present application, the synchronous driving member comprises a synchronous box installed on the outside of the welding table, synchronous wheels are installed at one end of the two bidirectional screws extending into the synchronous box, the two synchronous wheels are drivingly connected through a synchronous belt, and a first driving member connected with one of the bidirectional screws is installed on the outer wall of the synchronous box.

[0014] As a preferred technical scheme of the present application, the longitudinal beam clamping assembly comprises two symmetrically arranged U-shaped longitudinal beam clamping blocks installed on the synchronous frame, two symmetrically arranged second telescopic members are installed on the inner wall of the U-shaped longitudinal beam clamping block, and a clamping plate is installed at the telescopic end of the second telescopic member.

[0015] As a preferred technical scheme of the present application, visual sensors are installed on both sides of the moving table.

[0016] The present application has the following advantages: the present application can realize rapid centering, elastic pre-clamping and positioning of the cross beam in the U-shaped cross beam clamping block through the cooperation of the elastic pre-positioning assembly and the limiting assembly, and ensure the accuracy of the initial position of the cross beam; the adjusting assembly can adaptively adjust the position of the cross beam during the ascending process of the U-shaped cross beam clamping block, and ensure that the welding gap between the two ends of the cross beam and the longitudinal beam meets the process requirements, thereby solving the problems of excessively large or small welding gap and improving the welding quality; the cross beam clamping assembly cooperates with the U-shaped cross beam clamping block to perform secondary clamping and positioning when the cross beam moves between the two longitudinal beams, thereby further improving the positioning accuracy and stability of the cross beam; the regulating assembly and the longitudinal beam clamping assembly can realize the spacing adjustment and accurate clamping and positioning of the two longitudinal beams, so that the dimensional accuracy of the entire chassis framework is effectively controlled; the moving assembly drives the moving table to realize the preliminary movement of the cross beam and the switching of the welding position, the present application can realize rapid adjustment and clamping of the cross beam, manual repeated adjustment of the position of the cross beam between the two longitudinal beams is not required, the operation process is simple, the production efficiency and the welding quality are significantly improved, and the labor cost and the safety risk are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1This is a structural schematic diagram of a welding device for the floor frame of a motorhome. Figure 2 This is a schematic diagram of the moving platform in a welding device for the floor frame of a motorhome. Figure 3 This is a schematic diagram of the elastic prepositioning component in a welding device for the floor frame of a motorhome. Figure 4 This is a schematic diagram of the bottom structure of the U-shaped crossbeam clamping block in a welding device for the floor frame of a motorhome. Figure 5 This is a schematic diagram of the limiting component in a welding device for the floor frame of a motorhome. Figure 6 This is a schematic diagram of the crossbeam clamping component in a welding device for the floor frame of a motorhome. Figure 7 This is a schematic diagram of the adjustment component in a welding device for the floor frame of a motorhome. Figure 8 This is a schematic diagram of the drive plate and drive column in a welding device for the floor frame of a motorhome. Figure 9 This is a schematic diagram of the control and movement components in a welding device for the floor frame of a motorhome. Figure 10 This is a schematic diagram of the synchronous drive component in a welding device for the floor frame of a motorhome. Figure 11 This is a schematic diagram of the longitudinal beam clamping component in a RV floor frame welding device.

[0018] In the diagram: 101, welding table; 102, moving table; 103, first telescopic component; 104, U-shaped crossbeam clamping block; 2, control assembly; 201, moving groove; 202, moving block; 203, bidirectional screw; 204, synchronous frame; 205, synchronous box; 206, synchronous pulley; 207, synchronous belt; 208, first drive component; 3, longitudinal beam clamping assembly; 301, U-shaped longitudinal beam clamping block; 302, second telescopic component; 303, clamping plate; 4, moving assembly; 401, side plate; 402, guide rod; 403, moving screw; 404, second drive component; 5 501. Elastic pre-positioning component; 502. Slide bar; 503. Positioning plate; 504. Movable plate; 505. Elastic element; 6. Limiting component; 601. Limiting box; 602. Limiting groove; 603. Limiting rod; 604. Rack; 605. Rotating shaft; 606. Gear; 7. Crossbeam clamping component; 701. Clamping arm; 702. Clamping head; 703. Limiting baffle; 8. Adjusting component; 801. Adjusting plate; 802. Slide groove; 803. Slide rail; 804. Drive plate; 805. Drive groove; 806. Drive column; 807. Drive rod; 9. Vision sensor. Detailed Implementation

[0019] The technical solutions of the present application will be further described in detail in combination with the specific embodiments.

[0020] Embodiment 1: please refer to Figures 1-11 A motor home bottom plate framework stitch welding device, comprising a welding table 101 and a moving table 102, further comprising: A U-shaped beam clamping block 104, two groups of symmetrical first telescopic members 103 are installed on the moving table 102, preferably, the first telescopic member 103 is provided as a hydraulic rod, and the telescopic end of the first telescopic member 103 is fixedly connected with the U-shaped beam clamping block 104; An elastic pre-positioning assembly 5 is arranged on both sides of the U-shaped beam clamping block 104, which is used for elastically pre-clamping and positioning the beam placed in the U-shaped beam clamping block 104; A limiting assembly 6 is arranged at the bottom of the U-shaped beam clamping block 104 and connected with the elastic pre-positioning assembly 5, which is used for cooperating with the elastic pre-positioning assembly 5 to realize the centering elastic pre-clamping and positioning of the beam in the U-shaped beam clamping block 104; An adjusting assembly 8 is arranged between the U-shaped beam clamping block 104 and the moving table 102, which can cooperate with the elastic pre-positioning assembly 5 to realize the self-adaptive adjustment of the position of the beam in the U-shaped beam clamping block 104 during the process that the first telescopic member 103 drives the U-shaped beam clamping block 104 to rise; A beam clamping assembly 7 is arranged on the outside of the moving table 102, which can cooperate with the U-shaped beam clamping block 104 to clamp and position the beam when the beam in the U-shaped beam clamping block 104 is moved to between the two longitudinal beams by the first telescopic member 103; A moving assembly 4 is arranged in the middle of the welding table 101, which is used for driving the moving table 102 to move; A regulating assembly 2 is arranged on both sides of the welding table 101, which is used for adjusting the distance between the two longitudinal beams; A longitudinal beam clamping assembly 3 is arranged on the regulating assembly 2, which is used for clamping and positioning the longitudinal beam.

[0021] In one case of the present embodiment, please refer to Figure 2 And Figure 3 The elastic pre-positioning assembly 5 comprises a sliding rod 501 slidingly arranged on both sides of the U-shaped beam clamping block 104, one end of the sliding rod 501 located in the U-shaped beam clamping block 104 is provided with a positioning plate 502, the end of the sliding rod 501 away from the positioning plate 502 is provided with a movable plate 503, and an elastic member 504 is arranged between the movable plate 503 and the U-shaped beam clamping block 104 and sleeved on the sliding rod 501, preferably, the elastic member 504 is provided as a spring.

[0022] In the embodiment, the elastic member 504 is in a stretched state, so that the movable plate 503 is subjected to an elastic force towards one side of the middle part of the U-shaped cross beam clamping block 104, and the elastic force can be applied to the positioning plate 502 through the sliding rod 501, so that when the cross beam is placed in the U-shaped cross beam clamping block 104, the two positioning plates 502 can elastically clamp and position the two sides of the placed cross beam under the elastic force of the elastic member 504. Through the elastic clamping of the cross beam and the limiting of the U-shaped cross beam clamping block 104, the cross beam and the longitudinal beam that has been moved into position can be in a cross perpendicular state, and the cross beam can be pre-positioned, which facilitates the adjustment of the relative position of the cross beam and the longitudinal beam by the adjusting assembly 8.

[0023] In one case of the embodiment, please refer to Figures 2-5 The limiting assembly 6 includes a limiting box 601 installed at the bottom of the U-shaped cross beam clamping block 104, and a limiting slot 602 is formed at each side of the limiting box 601, a limiting rod 603 connected with the movable plate 503 is slidably arranged in the limiting slot 602, a gear rack 604 is arranged on each limiting rod 603 close to the side in the limiting box 601, a rotating shaft 605 is rotatably arranged at the middle part of the limiting box 601, and a gear 606 engaged with the gear rack 604 is installed on the rotating shaft 605.

[0024] In order to further ensure the accuracy of the position of the cross beam in the U-shaped cross beam clamping block 104, the two positioning plates 502 are synchronized in the U-shaped cross beam clamping block 104 by setting the limiting assembly 6.

[0025] Specifically, when the cross beam is placed in the U-shaped cross beam clamping block 104, the cross beam is clamped between the two positioning plates 502, and under the elastic tension of the elastic member 504, the movable plate 503 is subjected to an elastic force towards one side of the middle part of the U-shaped cross beam clamping block 104, so that the sliding rod 501 can push the positioning plate 502 to move towards the middle part of the U-shaped cross beam clamping block 104, and since the gear racks 604 on the two limiting rods 603 are engaged with the gear 606, the two movable plates 503 can be synchronized, the positioning plate 502 can be moved synchronously through the sliding rod 501, and the cross beam can be pre-clamped and positioned in the middle part of the U-shaped cross beam clamping block 104, so as to realize the preliminary accurate positioning of the cross beam.

[0026] In one case of the embodiment, please refer to Figure 2 , Figure 7 and Figure 8The adjusting assembly 8 comprises two adjusting plates 801 symmetrically arranged on the mobile platform 102, the bottom of the adjusting plate 801 is provided with a sliding groove 802, the top of the mobile platform 102 is provided with two sliding rails 803 symmetrically arranged and slidingly matched with the sliding groove 802, the top of the adjusting plate 801 is provided with a driving plate 804, the driving plate 804 is provided with a driving groove 805, the driving groove 805 comprises a vertical groove and an inclined groove, the bottom of the U-shaped beam clamping block 104 is provided with two groups of driving rods 807 symmetrically arranged, one end of the driving rod 807 away from the U-shaped beam clamping block 104 is provided with a driving column 806 slidingly matched with the driving groove 805.

[0027] When the centering and pre-clamping positioning of the beam is completed, the mobile assembly 4 moves the beam to the clamping position of the longitudinal beam, and then the beam in the U-shaped beam clamping block 104 needs to be moved to the same welding height as the longitudinal beam, wherein the driving groove 805 comprises a vertical groove and an inclined groove, when the driving column 806 slides upward along the inclined groove of the driving groove 805, the two adjusting plates 801 gradually approach, until the centering operation of the beam is completed, and as the driving column 806 continues to rise, the driving column 806 begins to slide along the vertical groove of the driving groove 805, thereby maintaining the centering limiting of the beam until the beam is moved to the same height as the longitudinal beam.

[0028] Specifically, in the initial state, the driving column 806 is located at the bottom end of the driving groove 805, at this time, the two adjusting plates 801 are in the state of extending outward, the first telescopic piece 103 is started, the first telescopic piece 103 drives the U-shaped beam clamping block 104 to rise, before the beam is moved to the same height as the longitudinal beam, the driving column 806 at the end of the driving rod 807 will first slide upward along the inclined groove of the driving groove 805, the driving column 806 and the inclined groove will drive the two adjusting plates 801 to move synchronously along the sliding rails 803 to the middle of the mobile platform 102, until the adjusting plate 801 completes the centering adjustment of the beam on the U-shaped beam clamping block 104, when the adjustment is completed, the driving column 806 also moves from the inclined groove to the junction position of the vertical groove of the driving groove 805, as the driving column 806 continues to rise, the driving column 806 begins to rise along the vertical groove of the driving groove 805, thereby maintaining the centering limiting of the beam by the adjusting plate 801, the limited beam is elastically clamped and positioned by the elastic pre-positioning assembly 5 and the limiting assembly 6, as the U-shaped beam clamping block 104 continues to rise, the U-shaped beam clamping block 104 moves to the specified position, at this time, the beam is in the centering position of the two longitudinal beams, the gap between the two ends of the beam and the longitudinal beam is the same, which meets the process requirement of the welding gap.

[0029] In one case of the embodiment, please refer to Figure 2 and Figure 6The cross beam clamping assembly 7 comprises clamping arms 701 installed outside the moving table 102, two clamping heads 702 symmetrically distributed and opposite to the U-shaped cross beam clamping block 104 are installed at the top of the clamping arms 701, and limiting baffle plates 703 are installed at the two sides of the clamping heads 702.

[0030] When the U-shaped cross beam clamping block 104 moves the centrally adjusted cross beam to the position, at this time, the clamping heads 702 of the clamping arms 701 abut against the top of the cross beam, and the limiting baffle plates 703 on the two sides abut against the outer side of the positioning plate 502 (the inner side interval of the two limiting baffle plates 703 is the same as the outer side interval of the two positioning plates 502 after the cross beam is centrally and elastically clamped, so that the displacement of the positioning plate 502 is ensured), and the limiting and clamping of the cross beam are realized through the cooperation of the clamping heads 702, the limiting baffle plates 703, the positioning plate 502 and the U-shaped cross beam clamping block 104, so that the longitudinal beam and the cross beam are conveniently welded.

[0031] Embodiment 2: please refer to Figures 1-11 The other contents of this embodiment are the same as those of Embodiment 1, and the difference lies in that the moving assembly 4 comprises side plates 401 installed at the two ends of the welding table 101, the guide rods 402 are installed between the side plates 401 and are in sliding cooperation with one end of the moving table 102, the moving screw rods 403 are threadedly connected to the other end of the moving table 102 and are rotationally connected to the side plates 401, the second driving members 404 are installed on the side plates 401 and are connected to the moving screw rods 403, and preferably, the second driving members 404 are servo motors.

[0032] Specifically, the second driving members 404 drive the moving screw rods 403 to rotate, thereby driving the moving table 102 to move along the guide rods 402 on the welding table 101, so that the moving table 102 can move along the arrangement direction of the longitudinal beam, and the preliminary movement of the cross beam and the switching of the welding position are realized.

[0033] In one case of this embodiment, please refer to Figure 1 and Figure 9 The control assembly 2 comprises moving grooves 201 opened at the two sides of the welding table 101 and symmetrically distributed, two moving grooves 201 are arranged at each side, the moving blocks 202 are slidably arranged in the moving grooves 201, the bidirectional screw rods 203 are rotationally arranged in the moving grooves 201 and are threadedly connected to the moving blocks 202, the synchronous frames 204 are fixedly connected to the moving blocks 202 at the same side of the welding table 101, and the synchronous driving members are connected to the bidirectional screw rods 203.

[0034] Further, the synchronous driving member comprises a synchronous box 205 installed outside the welding table 101, and two ends of the two bidirectional screw rods 203 extending into the synchronous box 205 are provided with synchronous wheels 206, the two synchronous wheels 206 are drivingly connected through a synchronous belt 207, and the outer wall of the synchronous box 205 is provided with a first driving member 208 connected with one of the two bidirectional screw rods 203, and preferably, the first driving member 208 is a servo motor.

[0035] Specifically, the first driving member 208 drives the bidirectional screw rod 203 to rotate, and the synchronous rotation of the two bidirectional screw rods 203 is realized through the synchronous belt 207 and the synchronous wheel 206, so that the synchronous movement of the moving blocks 202 in the two moving grooves 201 is realized, and then the U-shaped longitudinal beam clamping blocks 301 can be driven to move through the synchronous frame 204, and the distance between the two longitudinal beams can be adjusted synchronously, so that the clamped longitudinal beams can be moved to the position for welding.

[0036] In one case of the embodiment, referring to Figure 1 、 Figure 9 and Figure 11 , the longitudinal beam clamping assembly 3 comprises two symmetrical U-shaped longitudinal beam clamping blocks 301 installed on the synchronous frame 204, and the inner wall of the U-shaped longitudinal beam clamping block 301 is provided with two symmetrical second telescopic members 302, preferably, the second telescopic member 302 is a hydraulic rod, and the telescopic end of the second telescopic member 302 is provided with a clamping plate 303.

[0037] When the longitudinal beams are clamped, the two ends of the longitudinal beams are placed in the two U-shaped longitudinal beam clamping blocks 301, so that one side of the longitudinal beam is attached to the inner wall of the U-shaped longitudinal beam clamping block 301, and the end alignment of the two longitudinal beams is realized in a manual or mechanical manner, and then the second telescopic member 302 is started, the second telescopic member 302 is elongated and drives the clamping plate 303 to clamp the longitudinal beam, so that the longitudinal beam is clamped and positioned, and the two longitudinal beams are in a vertical state and parallel to each other.

[0038] In one case of the embodiment, referring to Figure 2 and Figure 7 , the two sides of the moving table 102 are provided with visual sensors 9.

[0039] The visual sensors 9 are used to monitor the positions of the cross beam and the longitudinal beams in real time, and feed back data to the control system, so that more accurate positioning and adjustment are realized.

[0040] In the implementation process of the present application, the two longitudinal beams are clamped and positioned by the longitudinal beam clamping assembly 3, and the two longitudinal beams are synchronously moved to the position for welding by the regulating assembly 2, so that the position adjustment of the longitudinal beams is realized, if the cross beam is centered between the two longitudinal beams and kept perpendicular to the two longitudinal beams, the welding gap between the two ends of the cross beam and the two longitudinal beams can meet the process requirements.

[0041] After the longitudinal beam position is adjusted, when it is necessary to splice the crossbeam for welding the longitudinal and crossbeams, the crossbeam can be placed in the U-shaped crossbeam clamping block 104 located below the longitudinal beam. The elastic pre-positioning component 5 elastically clamps the two sides of the crossbeam, so that the crossbeam and the moved longitudinal beam form a cross shape. It is also convenient for the adjustment component 8 to adjust the relative position of the crossbeam and the longitudinal beam, so that the welding gap between the longitudinal and crossbeams meets the welding requirements. In addition, with the cooperation of the limiting component 6, the elastic pre-positioning component 5 can realize the rapid centering elastic pre-clamping and positioning of the crossbeam, so that the crossbeam can be located in the middle of the U-shaped crossbeam clamping block 104.

[0042] After the crossbeam is centered and pre-clamped, the crossbeam is moved to the welding position with the longitudinal beam by the moving component 4, realizing the initial movement of the crossbeam. At this time, the U-shaped crossbeam clamping block 104 is still located in the area below the two longitudinal beams. Then, the first telescopic component 103 starts to drive the U-shaped crossbeam clamping block 104 to rise. During the rising process, the two adjusting plates 801 of the adjusting component 8 will move synchronously with the cooperation of the driving groove 805 and the driving column 806 on the driving plate 804 until the centering adjustment of the rising crossbeam is completed. At this time, the gaps between the two ends of the crossbeam and the two longitudinal beams are the same. Since the longitudinal beams have been moved to the welding position, the welding gap between the crossbeam and the longitudinal beams can meet the process requirements and avoid the problem of the welding gap being too large or too small.

[0043] When the first telescopic component 103 drives the U-shaped crossbeam clamping block 104 to move to the preset height, the crossbeam and the longitudinal beam are at the same level. At the same time, the crossbeam clamping assembly 7 also contacts the crossbeam and works with the U-shaped crossbeam clamping block 104 to clamp and position the adjusted crossbeam, so that welding operations can be performed at the connection between the crossbeam and the longitudinal beam.

[0044] After the welding of a single crossbeam and two longitudinal beams is completed, the first telescopic component 103 drives the U-shaped crossbeam clamping block 104 to descend. During this process, the adjustment component 8 is reset with the cooperation of the drive groove 805 and the drive column 806. The two adjustment plates 801 unfold outward, and at the same time, the crossbeam clamping component 7 separates from the U-shaped crossbeam clamping block 104. Then, the moving component 4 can drive the moving table 102 to move to the next welding position. The above operation is repeated until the welding of the RV chassis frame is completed.

[0045] The power supply and control of the electrical equipment in this application are all existing technologies and will not be elaborated upon here. The control of each component can be achieved using a PLC controller disclosed in the prior art, and the model and circuit connection of each component are not specifically limited. All electrical equipment involved are existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The scope of protection of this invention does not involve improvements to the software and methods.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A motor home floor frame tailor-welding device comprising a welding table and a moving table, characterized in that, Also include: The U-shaped beam clamping block is provided with two groups of symmetrically distributed first telescopic members on the moving table, and the telescopic ends of the first telescopic members are fixedly connected with the U-shaped beam clamping block; The elastic pre-positioning assembly is arranged on both sides of the U-shaped beam clamping block and is used for elastically pre-clamping and positioning the beam placed in the U-shaped beam clamping block; The limiting assembly is arranged at the bottom of the U-shaped beam clamping block and is connected with the elastic pre-positioning assembly, and is used for cooperating with the elastic pre-positioning assembly to realize the centering elastic pre-clamping and positioning of the beam in the U-shaped beam clamping block; The adjusting assembly is arranged between the U-shaped beam clamping block and the moving table, and in the process that the first telescopic member drives the U-shaped beam clamping block to rise, the position of the beam in the U-shaped beam clamping block can be self-adaptively adjusted in cooperation with the elastic pre-positioning assembly; The beam clamping assembly is arranged on the outer side of the moving table, and when the beam in the U-shaped beam clamping block is moved to between the two longitudinal beams, the beam is clamped and positioned in cooperation with the U-shaped beam clamping block.

2. The RV floor frame assembly welding apparatus of claim 1, wherein, The elastic pre-positioning assembly includes a sliding rod slidingly arranged on both sides of the U-shaped beam clamping block, one end of the sliding rod located in the U-shaped beam clamping block is provided with a positioning plate, and the other end of the sliding rod away from the positioning plate is provided with a movable plate, and an elastic member is arranged between the movable plate and the U-shaped beam clamping block and sleeved on the sliding rod.

3. The RV floor frame assembly welding apparatus of claim 2, wherein, The limiting assembly includes a limiting box arranged at the bottom of the U-shaped beam clamping block, and dislocated limiting grooves are formed in the two sides of the limiting box, limiting rods connected with the movable plates are slidingly arranged in the limiting grooves, a rack is arranged on the two limiting rods located in the limiting box and close to the sides, a rotating shaft is rotatably arranged in the middle of the limiting box, and a gear meshing with the rack is arranged on the rotating shaft.

4. The RV floor frame assembly welding apparatus of claim 3, wherein, The adjusting assembly includes two adjusting plates symmetrically distributed on the moving table, a sliding groove is formed in the bottom of the adjusting plate, symmetrically distributed sliding rails are arranged on the top of the moving table and slidingly cooperate with the sliding groove, driving plates are arranged on the top of the adjusting plate, a driving groove is arranged on the driving plate and is composed of a vertical groove and an inclined groove, two groups of driving rods symmetrically distributed are arranged on the two sides of the bottom of the U-shaped beam clamping block, and a driving column slidingly cooperating with the driving groove is arranged on one end of the driving rod away from the U-shaped beam clamping block.

5. The RV floor frame assembly welding apparatus of claim 4, wherein, The beam clamping assembly includes a clamping arm arranged on the outer side of the moving table, two clamping heads symmetrically distributed and opposite to the U-shaped beam clamping block are arranged on the top of the clamping arm, and limiting baffle plates are arranged on the two sides of the clamping head.

6. The RV floor frame assembly welding apparatus of claim 5, wherein, Also include a moving assembly, the moving assembly is arranged in the middle of the welding table, the moving assembly includes side plates arranged at two ends of the welding table, a guide rod slidingly cooperating with one end of the moving table is arranged between the side plates, a moving screw rod rotatably connected with the side plates is threadedly connected to the other end of the moving table, and a second driving member connected with the moving screw rod is arranged on the side plate.

7. The RV floor frame assembly welding apparatus of claim 6, wherein, The control assembly is arranged on both sides of the welding table, and comprises moving grooves arranged symmetrically on both sides of the welding table, two moving grooves are arranged on each side, a moving block is slidably arranged in each moving groove, a bidirectional screw is rotatably arranged in each moving groove and threadedly connected with the moving block, and a synchronous frame is fixedly connected with the moving blocks on the same side of the welding table.

8. The RV floor frame assembly welding apparatus of claim 7, wherein, The synchronous drive member comprises a synchronous box mounted on the outer side of the welding table, one end of each bidirectional screw extending into the synchronous box is provided with a synchronous wheel, the two synchronous wheels are drivingly connected through a synchronous belt, and the outer wall of the synchronous box is provided with a first drive member connected with one of the bidirectional screws.

9. The RV floor frame assembly welding apparatus of claim 7, wherein, The longitudinal beam clamping assembly is arranged on the control assembly, and comprises two symmetrically arranged U-shaped longitudinal beam clamping blocks mounted on the synchronous frame, two symmetrically arranged second telescopic members mounted on the inner wall of the U-shaped longitudinal beam clamping block, and a clamping plate mounted on the telescopic end of the second telescopic member.

10. The RV floor frame assembly welding apparatus of claim 6, wherein, Visual sensors are mounted on both sides of the moving table.

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