CN114952150A

CN114952150A - Auxiliary construction device for welding rear frame

Info

Publication number: CN114952150A
Application number: CN202210479904.1A
Authority: CN
Inventors: 沙慧丽
Original assignee: Jining Technician College
Current assignee: Jining Technician College
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-08-30

Abstract

The invention relates to the field of welding processing equipment, in particular to an auxiliary construction device for welding processing of a rear frame, which comprises a central base, a movable rack, a vertical bracket and a frame clamp, wherein the central base is provided with a plurality of vertical brackets; the two movable racks are oppositely connected to two ends of the central base; each movable rack is connected with two vertical brackets which are oppositely arranged in a matching way, and each vertical bracket is connected with one or more than one frame clamp in a matching way. The four vertical brackets are arranged in the welding machine, and each vertical bracket is provided with at least one frame clamp with adjustable height so as to clamp and position the rear frame on four sides of the rear frame, keep the rear frame in a stable and fixed state during welding and be beneficial to improving the stability during welding; the adjustable frame clamp is adopted, so that the rear frames of different vehicles can be clamped and fixed conveniently, the application range is wide, and the practicability is high.

Description

Auxiliary construction device for welding rear frame

Technical Field

The invention relates to the field of welding processing equipment, in particular to an auxiliary construction device for welding processing of a rear frame.

Background

The frame is a frame structure bridged on the front axle and the rear axle of the automobile, is commonly called a crossbeam, is a base body of the automobile, generally consists of two longitudinal beams and a plurality of cross beams, is supported on wheels through a suspension device, the front axle and the rear axle, and has enough strength and rigidity to bear the load of the automobile and the impact transmitted from the wheels, and the welding of the frame is an important factor for determining the strength and the rigidity of the frame. When the rear frame is machined, a plurality of welding positions are needed to be welded, and the rear frame is directly placed on the ground, so that a plurality of positions are not easy to weld, and therefore the auxiliary construction device convenient for supporting and positioning the rear frame is needed.

Disclosure of Invention

The invention aims to provide an auxiliary construction device for welding a rear frame, which can effectively solve the problems in the prior art.

The purpose of the invention is realized by the following technical scheme:

an auxiliary construction device for welding and processing a rear frame comprises a central base, a movable rack, a vertical bracket and a frame clamp; the two movable racks are oppositely connected to two ends of the central base; each movable rack is connected with two vertical brackets which are oppositely arranged in a matching way, and each vertical bracket is connected with one or more than one frame clamp in a matching way.

Preferably, the central base comprises a disc base, a fixed upright post, a central transverse frame, a distance adjusting rotating pipe, a distance adjusting seat plate, a distance adjusting connecting rod and a linkage frame; the bottom end of the fixed upright post is fixed at the center of the disc base; the middle part of the fixed upright post is fixed in a longitudinal through hole of the central transverse frame; the top end of the fixed upright post is provided with an external thread structure, and the fixed upright post is in thread fit with the inner side of the distance adjusting rotating pipe through the external thread structure; the distance adjusting rotating pipe is rotatably matched in a central hole of the distance adjusting seat plate; two ends of the distance adjusting seat plate are respectively and rotatably connected with one end of one distance adjusting connecting rod, the other ends of the two distance adjusting connecting rods are fixedly connected with the inner ends of the two linkage frames one by one, the two linkage frames are relatively and slidably matched on two sides of the central cross frame, and the outer ends of the two linkage frames are fixedly connected with the two movable racks one by one.

Preferably, the fixed upright post is sleeved with a limiting spring, and two ends of the limiting spring are respectively fixedly connected with the distance-adjusting seat plate and the central cross frame; the distance adjusting seat plate is in threaded fit with a limiting screw, and the inner end of the limiting screw is pressed on the distance adjusting rotating pipe.

Preferably, the movable rack comprises a transverse mounting rack, a bidirectional screw, a supporting leg and a traveling wheel; two supporting legs which are oppositely arranged are fixed at the bottom end of the transverse mounting frame, and the bottom of each supporting leg is rotatably connected with a traveling wheel; the outer end of the linkage frame is fixedly connected with the two supporting legs; one end of the bidirectional screw is provided with left-handed threads, the other end of the bidirectional screw is provided with right-handed threads, the two ends of the bidirectional screw are rotated at the two ends of the transverse mounting rack, and the middle part of the bidirectional screw is in threaded transmission connection with two vertical brackets which are in relative sliding fit on the transverse mounting rack.

Preferably, the vertical bracket comprises a vertical frame body, a supporting rotating shaft, a displacement sliding seat and a vertical screw rod; the vertical frame body is fixed at the top end of the supporting rotating shaft, the bottom end of the supporting rotating shaft is rotatably connected to the displacement sliding seat, and the displacement sliding seat is in threaded fit with the bidirectional screw rod and is in sliding fit with the transverse mounting frame; the upper end and the lower end of the vertical screw rod are fixed at the upper end and the lower end of the side slideway of the vertical frame body; one or more than one frame clamp is connected to the vertical screw in a threaded fit manner.

Preferably, the movable rack further comprises a bidirectional worm, two ends of the bidirectional worm are rotatably connected to two ends of the transverse mounting frame, and the axis of the bidirectional worm is parallel to the axis of the bidirectional screw; one end of the bidirectional worm is a left-handed worm, the other end of the bidirectional worm is a right-handed worm, the vertical bracket further comprises a worm wheel fixed on the supporting rotating shaft, and the worm wheel is in meshed connection with the bidirectional worm; the outer end of the bidirectional worm is fixed with a screwing wheel.

Preferably, the movable frame further comprises a guide cross frame; the guide cross frame is fixed on the cross mounting frame, the middle part of the supporting rotating shaft is in sliding fit in the groove-shaped slide way of the guide cross frame, and the vertical frame body is in sliding fit on the top surface of the guide cross frame.

Preferably, the frame clamp comprises a lifting rotating pipe, a clamp seat, an upper clamping plate assembly and a lower clamping plate assembly; the inner side of the lifting rotating pipe is in threaded fit connection with the vertical screw, the lifting rotating pipe is in running fit in a longitudinal hole of the clamp seat, and one end of the clamp seat is in sliding fit with the inner side face of the vertical frame body; the upper side of the other end of the clamp seat is provided with a storage chute, and the upper clamping plate assembly is connected in the storage chute; the lower splint subassembly is connected at the downside of the anchor clamps seat other end, and the lower splint subassembly sets up with the upper plate subassembly is relative.

Preferably, the upper clamping plate assembly comprises an upper clamping plate body, a limiting sliding block, a transverse guide rod, a rod seat, an extension spring and a limiting nut; one end of the upper clamping plate body is in sliding fit with the accommodating chute of the clamp seat, and the other end of the upper clamping plate body is provided with an inclined clamping surface which is inclined from bottom to top; the side fixed connection limit slide one end of punch holder body, limit slide middle part sliding fit is in the spacing slide of anchor clamps seat side, and the sliding fit of the limit slide other end is on horizontal guide bar, and horizontal guide bar one end is passed through the pole socket and is fixed at anchor clamps seat side, and horizontal guide bar other end screw-thread fit limit nut overlaps on the horizontal guide bar and establishes extension spring, extension spring both ends respectively with pole socket and limit slide fixed connection.

Preferably, the lower splint component comprises a lower splint body, a turnover shaft, an inclined support rod, an upper support and a lower support and an adjusting screw; lower plate body one end is fixed on the trip shaft, and the trip shaft rotates to be connected on the anchor clamps seat, and slope branch one end rotates with the bottom surface of lower plate body to be connected, and the slope branch other end rotates with upper and lower support to be connected, and upper and lower support screw-thread fit is at the adjusting screw middle part, and the adjusting screw top is rotated through taking the seat bearing to be connected on anchor clamps seat bottom surface.

The invention has the beneficial effects that: according to the auxiliary construction device for welding the rear frame, the four vertical brackets are arranged in the auxiliary construction device, and each vertical bracket is at least provided with the frame fixture with the height capable of being adjusted, so that the rear frame can be clamped and positioned on four sides of the rear frame, the rear frame is kept in a stable and fixed state during welding, and the stability during welding is improved; the adjustable frame clamp is adopted, so that the rear frames of different vehicles can be clamped and fixed conveniently, the application range is wide, and the practicability is high.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a first general schematic diagram provided in accordance with an embodiment of the present invention;

FIG. 2 is a second overall view provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a center base according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a movable frame according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a vertical bracket provided in an embodiment of the present invention;

FIG. 6 is a first schematic structural diagram of a frame clamp according to an embodiment of the present invention;

FIG. 7 is a second schematic structural view of a frame clamp according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a fixture seat according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of an upper cleat assembly according to an embodiment of the invention;

fig. 10 is a schematic structural view of a lower cleat assembly according to an embodiment of the present invention.

Icon: a central base 1; a disc base 11; a fixed upright 12; a center cross frame 13; a pitch-adjusting rotating pipe 14; a distance-adjusting seat plate 15; a distance adjusting connecting rod 16; a linkage frame 17; a movable frame 2; a horizontal mounting frame 21; a bidirectional screw 22; support legs 23; road wheels 24; a bidirectional worm 25; a guide cross frame 26; a vertical bracket 3; a vertical frame body 31; a support shaft 32; a displacement slide 33; a vertical screw 34; a worm wheel 35; a frame clamp 4; a lifting rotating pipe 41; a jig base 42; an upper clamp plate assembly 43; an upper clamp body 43 a; a limit slider 43 b; a lateral guide rod 43 c; a lever base 43 d; an extension spring 43 e; a limit nut 43 f; a lower cleat assembly 44; a lower cleat body 44 a; a flip shaft 44 b; the inclined struts 44 c; upper and lower supports 44 d; the screw 44e is adjusted.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for understanding and reading the contents disclosed in the specification, and are not used for limiting the conditions that the present application can implement, so the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the technical content disclosed in the present application without affecting the efficacy and the achievable purpose of the present application. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present application, and changes or modifications in the relative relationship may be made without substantial technical changes.

The invention is described in further detail below with reference to figures 1-10.

As shown in fig. 1-10, an auxiliary construction device for welding a rear frame comprises a central base 1, a movable frame 2, a vertical bracket 3 and a frame clamp 4; the two movable racks 2 are oppositely connected to two ends of the central base 1; each movable frame 2 is connected with two vertical brackets 3 which are oppositely arranged in a matching way, and each vertical bracket 3 is connected with one or more than one frame clamp 4 in a matching way.

According to the auxiliary construction device for welding the rear frame, the central base 1 arranged in the auxiliary construction device is used for limiting and supporting, the distance between the two movable racks 2 can be adjusted, so that the auxiliary construction device is suitable for mounting rear frames with different lengths, each movable rack 2 is connected with the two vertical brackets 3 capable of adjusting the position in a matching mode, so that the auxiliary construction device is suitable for mounting rear frames with different widths, each vertical bracket 3 is connected with one or more frame clamps 4 in a matching mode, so that the four sides of the rear frame can be positioned through the four frame clamps 4 on the four vertical brackets 3, the height of each frame clamp 4 can be properly adjusted, and the adjustment to the optimal welding position is facilitated.

The central base 1 comprises a disc base 11, a fixed upright post 12, a central transverse frame 13, a distance adjusting rotating pipe 14, a distance adjusting seat plate 15, a distance adjusting connecting rod 16 and a linkage frame 17; the bottom end of the fixed upright post 12 is fixed at the center of the disc base 11; the middle part of the fixed upright post 12 is fixed in a longitudinal through hole of the central transverse frame 13; the top end of the fixed upright post 12 is provided with an external thread structure, and the fixed upright post 12 is in thread fit with the inner side of the distance adjusting rotating pipe 14 through the external thread structure; the distance adjusting rotary pipe 14 is rotatably matched in a central hole of the distance adjusting seat plate 15; two ends of the distance adjusting seat plate 15 are respectively and rotatably connected with one end of a distance adjusting connecting rod 16, the other ends of the two distance adjusting connecting rods 16 are fixedly connected with the inner ends of the two linkage frames 17 one by one, the two linkage frames 17 are in relative sliding fit with two sides of the central cross frame 13, and the outer ends of the two linkage frames 17 are fixedly connected with the two movable racks 2 one by one.

The central base 1 is arranged, firstly, the central base is used for supporting and limiting, so that the invention is integrally fixed in one area; secondly, the distance between the two movable racks 2 is connected and adjusted so as to be suitable for installation of rear frames with different lengths, and when the distance is adjusted, the distance can be controlled by rotating the distance adjusting rotating pipe 14, the contact position of the distance adjusting rotating pipe 14 and the external thread structure at the top end of the fixed upright post 12 can be changed by rotating the distance adjusting rotating pipe 14, so that the distance adjusting seat plate 15 is driven to perform sliding motion in the vertical direction, the distance adjusting seat plate 15 pushes or pulls one end of the two distance adjusting connecting rods 16 to perform motion, the included angle between the two distance adjusting connecting rods 16 is changed, the other ends of the two distance adjusting connecting rods 16 drive the two linkage frames 17 to synchronously slide inwards or synchronously slide outwards on the central cross frame 13, so that the distance between the two movable racks 2 is changed, and the distance is suitable for rear frames with different lengths; the fixed upright post 12 in the central base 1 not only can play a supporting role, but also can be matched with the distance adjusting rotating pipe 14 to play a role in adjusting the distance between the two movable racks 2, so that one column has multiple purposes, and the processing cost of equipment is saved.

The fixed upright post 12 is sleeved with a limiting spring, and two ends of the limiting spring are respectively fixedly connected with the distance adjusting seat plate 15 and the central cross frame 13; the distance adjusting seat plate 15 is in threaded fit with a limit screw, and the inner end of the limit screw is pressed on the distance adjusting rotating pipe 14. The limiting spring is arranged to play a role in primary limiting, so that the resistance of the distance adjusting seat plate 15 during movement is improved, and the stability of the distance adjusting seat plate 15 after movement is improved; the setting of limit screw plays the spacing effect of second grade, screws up limit screw roof pressure and prevents that roll adjustment rotating-barrel 14 from rotating on roll adjustment rotating-barrel 14.

The movable rack 2 comprises a transverse mounting frame 21, a bidirectional screw 22, a supporting leg 23 and a traveling wheel 24; two supporting legs 23 which are oppositely arranged are fixed at the bottom end of the transverse mounting frame 21, and the bottom of each supporting leg 23 is rotatably connected with a walking wheel 24; the outer end of the linkage frame 17 is fixedly connected with two supporting legs 23; two-way screw rod 22 one end is equipped with left-hand thread, and the other end is equipped with right-hand thread, and two ends of two-way screw rod 22 are rotated at horizontal mounting bracket 21 both ends, and two relative sliding fit vertical bracket 3 on horizontal mounting bracket 21 are connected in the middle part screw thread transmission of two-way screw rod 22. The horizontal mounting bracket 21 lower extreme of activity frame 2 is fixed with supporting leg 23 of taking walking wheel 24, be convenient for adjusting the position under the control of central base 1, two-way screw rod 22's setting, be used for controlling two vertical bracket 3 and slide or deviate from the slip on horizontal mounting bracket 21 in opposite directions, thereby change the interval between two vertical bracket 3, finally adjust the interval of frame anchor clamps 4 on two vertical bracket 3, so that it is spacing to carry out the centre gripping to the back frame of different width, and need not to pass through bolted connection back frame, be convenient for the installation or the dismantlement of back frame, it is very convenient to operate.

The vertical bracket 3 comprises a vertical frame body 31, a supporting rotating shaft 32, a displacement sliding seat 33 and a vertical screw 34; the vertical frame body 31 is fixed at the top end of the supporting rotating shaft 32, the bottom end of the supporting rotating shaft 32 is rotatably connected to the displacement slide seat 33, and the displacement slide seat 33 is in threaded fit with the bidirectional screw rod 22 and is in sliding fit with the transverse mounting frame 21; the upper end and the lower end of the vertical screw 34 are fixed at the upper end and the lower end of the slideway at the side of the vertical frame body 31; one or more than one frame clamp 4 is connected to the vertical screw rod 34 in a threaded fit manner.

Vertical bracket 3 is used for connecting frame anchor clamps 4, and can cooperate frame anchor clamps 4 to adjust the level of frame anchor clamps 4, displacement slide 33 in vertical bracket 3 can slide on horizontal installation frame 21 under the control of two-way screw rod 22, thereby adjust the holistic position of vertical bracket 3, erect a body 31 lower extreme and be connected with displacement slide 33 through supporting pivot 32, make erect a body 31 and rotate on displacement slide 33 through supporting pivot 32, be convenient for adjust the orientation position of frame anchor clamps 4 on the vertical screw rod 34, so that carry out more reasonable centre gripping location.

The movable rack 2 further comprises a bidirectional worm 25, two ends of the bidirectional worm 25 are rotatably connected to two ends of the transverse mounting frame 21, and the axis of the bidirectional worm 25 is parallel to the axis of the bidirectional screw 22; one end of the bidirectional worm 25 is a left-handed worm, the other end of the bidirectional worm 25 is a right-handed worm, the vertical bracket 3 further comprises a worm wheel 35 fixed on the support rotating shaft 32, and the worm wheel 35 is meshed with the bidirectional worm 25; the outer end of the bidirectional worm 25 is fixed with a screwing wheel. When the bidirectional worm 25 is controlled to rotate by the screwing wheel, the two worm wheels 35 can be driven to rotate in different hour directions, so that the supporting rotating shafts 32 of the two vertical brackets 3 are driven to rotate in different hour directions, the two frame clamps 4 installed on the two vertical brackets 3 are finally controlled to rotate to opposite positions, the two sides of a rear frame can be clamped and positioned conveniently, the two worm wheels 35 can roll on the bidirectional worm 25, the adjustment of the distance between the two vertical brackets 3 on each movable rack 2 is not influenced, the bidirectional worm 25 and the worm wheels 35 are structurally arranged, self-locking is realized after the adjustment, the supporting rotating shafts 32 cannot easily rotate, and the stability in use of the invention is improved.

The mobile frame 2 further comprises a guide cross frame 26; the guide cross frame 26 is fixed on the cross mounting frame 21, the middle part of the support rotating shaft 32 is in sliding fit in a groove-shaped slideway of the guide cross frame 26, and the vertical frame body 31 is in sliding fit on the top surface of the guide cross frame 26. The guide cross frame 26 is used for limiting the support rotating shaft 32, and the stability of the whole structure is improved.

The frame clamp 4 comprises a lifting rotating pipe 41, a clamp seat 42, an upper clamping plate assembly 43 and a lower clamping plate assembly 44; the inner side of the lifting rotating pipe 41 is in threaded fit connection with the vertical screw 34, the lifting rotating pipe 41 is in running fit in a longitudinal hole of the clamp seat 42, and one end of the clamp seat 42 is in sliding fit on the inner side surface of the vertical frame body 31; the upper side of the other end of the clamp seat 42 is provided with a storage chute, and the upper clamping plate assembly 43 is connected in the storage chute; a lower clamp assembly 44 is attached to the underside of the other end of the clamp base 42, the lower clamp assembly 44 being disposed opposite the upper clamp assembly 43. The level of frame anchor clamps 4 can be adjusted through rotating lift rotating tube 41, rotate lift rotating tube 41 and can change its and vertical screw 34's contact position, thereby drive anchor clamps seat 42 and carry out the sliding motion of direction from top to bottom on the medial surface of perpendicular frame body 31, thereby change the level of punch holder subassembly 43 and lower plate subassembly 44, be convenient for fix a position the rear frame at the level of difference through punch holder subassembly 43 and lower plate subassembly 44, so that improve the convenience during welding.

The upper clamping plate assembly 43 comprises an upper clamping plate body 43a, a limit sliding block 43b, a transverse guide rod 43c, a rod seat 43d, an extension spring 43e and a limit nut 43 f; one end of the upper clamping plate body 43a is in sliding fit in the accommodating sliding groove of the clamp seat 42, and the other end of the upper clamping plate body 43a is provided with an inclined clamping surface inclined from bottom to top; the side end of the upper splint body 43a is fixedly connected with one end of a limiting slide block 43b, the middle part of the limiting slide block 43b is in sliding fit in a limiting slide way at the side end of the clamp seat 42, the other end of the limiting slide block 43b is in sliding fit on a transverse guide rod 43c, one end of the transverse guide rod 43c is fixed at the side end of the clamp seat 42 through a rod seat 43d, the other end of the transverse guide rod 43c is in threaded fit with a limiting nut 43f, an extension spring 43e is sleeved on the transverse guide rod 43c, and two ends of the extension spring 43e are respectively fixedly connected with the rod seat 43d and the limiting slide block 43 b. When the frame fixture 4 is used, the upper clamp plate body 43a slides into the accommodating sliding groove of the fixture seat 42, the upper clamp plate body 43a is controlled to be far away from the upper part of the lower clamp plate assembly 44, at the moment, the upper clamp plate body 43a drives the limiting sliding block 43b to slide and stretch the stretching spring 43e, then the rear frame is placed on the lower clamp plate assembly 44, the rear frame is supported through the lower clamp plate assemblies 44 of the frame fixtures 4, and the lower clamp plate assembly 44 can be provided with bolt connecting holes so as to connect the rear frame to the lower clamp plate assembly 44 and improve the positioning stability; then the limiting slide block 43b or the upper clamping plate body 43a is loosened, the upper clamping plate body 43a can return to the original position under the elastic force of the extension spring 43e, so that the inclined clamping surface of the upper clamping plate body 43a is clamped above the rear frame, and the inclined clamping surface is arranged, so that the upper clamping plate can be suitable for clamping and limiting the rear frames with different thicknesses; can rotate limit nut 43f after the centre gripping and change the contact position of limit nut 43f and horizontal guide bar 43c to control limit nut 43f card and keep off in limit slide 43b one side, the slide in the spout is accomodate to anchor clamps seat 42 to punch holder body 43a this moment, thereby carries out stable centre gripping to the back frame.

The lower splint assembly 44 comprises a lower splint body 44a, a turning shaft 44b, an inclined strut 44c, an upper support 44d, a lower support 44d and an adjusting screw 44 e; one end of the lower splint body 44a is fixed on the turning shaft 44b, the turning shaft 44b is rotatably connected to the clamp seat 42, one end of the inclined strut 44c is rotatably connected to the bottom surface of the lower splint body 44a, the other end of the inclined strut 44c is rotatably connected to the upper and lower supports 44d, the upper and lower supports 44d are in threaded fit with the middle of the adjusting screw 44e, and the top end of the adjusting screw 44e is rotatably connected to the bottom surface of the clamp seat 42 through a bearing with a seat. The lower clamping plate body 44a in the lower clamping plate assembly 44 is used for supporting and placing the lower part of the rear frame, and the inclination angle of the lower clamping plate assembly 44 can be adjusted so as to form a V-shaped clamping groove with an adjustable clamping groove range by matching with the inclined clamping surface of the upper clamping plate body 43a, so that clamping of rear frames with more sizes or clamping at positions with more thickness ranges can be conveniently met; during adjustment, the adjusting screw 44e is rotated to change the contact position with the upper and lower support seats 44d, so as to adjust the upper and lower support seats 44d to move up and down, the upper and lower support seats 44d push or pull one end of the inclined strut 44c to move, and the other end of the inclined strut 44c drives the lower splint body 44a to rotate around the axis of the turnover shaft 44b, thereby realizing adjustment of the range of the V-shaped clamping groove formed by matching the inclined clamping surface of the upper splint body 43 a.

The principle is as follows: according to the auxiliary construction device for welding the rear frame, the central base 1 arranged in the auxiliary construction device is used for limiting and supporting, the distance between the two movable racks 2 can be adjusted, so that the auxiliary construction device is suitable for mounting rear frames with different lengths, each movable rack 2 is connected with the two vertical brackets 3 capable of adjusting the position in a matching mode, so that the auxiliary construction device is suitable for mounting rear frames with different widths, each vertical bracket 3 is connected with one or more frame clamps 4 in a matching mode, so that the four sides of the rear frame can be positioned through the four frame clamps 4 on the four vertical brackets 3, the height of each frame clamp 4 can be properly adjusted, and the adjustment to the optimal welding position is facilitated.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The utility model provides a supplementary construction equipment of back frame welding process which characterized in that: comprises a central base (1), a movable frame (2), a vertical bracket (3) and a frame clamp (4); the two movable racks (2) are arranged, and the two movable racks (2) are oppositely connected to two ends of the central base (1); each movable rack (2) is connected with two opposite vertical brackets (3) in a matching way, and each vertical bracket (3) is connected with one or more than one frame clamp (4) in a matching way.

2. The auxiliary construction device for welding the rear frame according to claim 1, wherein: the central base (1) comprises a disc base (11), a fixed upright post (12), a central transverse frame (13), a distance adjusting rotary pipe (14), a distance adjusting seat plate (15), a distance adjusting connecting rod (16) and a linkage frame (17); the bottom end of the fixed upright post (12) is fixed at the center of the disc base (11); the middle part of the fixed upright post (12) is fixed in a longitudinal through hole of the central transverse frame (13); the top end of the fixed upright post (12) is provided with an external thread structure, and the fixed upright post (12) is in thread fit with the inner side of the distance adjusting rotating pipe (14) through the external thread structure; the distance adjusting rotating pipe (14) is rotatably matched in a central hole of the distance adjusting seat plate (15); two ends of the distance adjusting seat plate (15) are respectively and rotatably connected with one end of a distance adjusting connecting rod (16), the other ends of the two distance adjusting connecting rods (16) are fixedly connected with the inner ends of the two linkage frames (17) one by one, the two linkage frames (17) are matched with two sides of the central transverse frame (13) in a relatively sliding mode, and the outer ends of the two linkage frames (17) are fixedly connected with the two movable racks (2) one by one.

3. The auxiliary construction device for welding the rear frame according to claim 2, wherein: the fixed upright post (12) is sleeved with a limiting spring, and two ends of the limiting spring are respectively fixedly connected with the distance adjusting seat plate (15) and the central cross frame (13); the distance adjusting seat plate (15) is in threaded fit with a limiting screw, and the inner end of the limiting screw is pressed on the distance adjusting rotating pipe (14).

4. The auxiliary construction device for welding the rear frame according to claim 2, wherein: the movable rack (2) comprises a transverse mounting rack (21), a bidirectional screw (22), a supporting leg (23) and a traveling wheel (24); two supporting legs (23) which are oppositely arranged are fixed at the bottom end of the transverse mounting frame (21), and the bottom of each supporting leg (23) is rotatably connected with a traveling wheel (24); the outer end of the linkage frame (17) is fixedly connected with the two supporting legs (23); one end of the bidirectional screw (22) is provided with left-handed threads, the other end of the bidirectional screw is provided with right-handed threads, the two ends of the bidirectional screw (22) are rotated at the two ends of the transverse mounting frame (21), and the middle part of the bidirectional screw (22) is in threaded transmission connection with two vertical brackets (3) which are in relative sliding fit on the transverse mounting frame (21).

5. The auxiliary construction device for welding the rear frame according to claim 4, wherein: the vertical bracket (3) comprises a vertical frame body (31), a supporting rotating shaft (32), a displacement sliding seat (33) and a vertical screw rod (34); the vertical frame body (31) is fixed at the top end of the supporting rotating shaft (32), the bottom end of the supporting rotating shaft (32) is rotatably connected to the displacement sliding seat (33), and the displacement sliding seat (33) is in threaded fit with the bidirectional screw rod (22) and is in sliding fit with the transverse mounting frame (21); the upper end and the lower end of the vertical screw rod (34) are fixed at the upper end and the lower end of the side slideway of the vertical frame body (31); one or more than one frame clamp (4) is connected to the vertical screw rod (34) in a threaded fit manner.

6. The auxiliary construction device for welding the rear frame according to claim 5, wherein: the movable rack (2) further comprises a bidirectional worm (25), two ends of the bidirectional worm (25) are rotatably connected to two ends of the transverse mounting frame (21), and the axis of the bidirectional worm (25) is parallel to the axis of the bidirectional screw (22); one end of the bidirectional worm (25) is a left-handed worm, the other end of the bidirectional worm is a right-handed worm, the vertical bracket (3) further comprises a worm wheel (35) fixed on the supporting rotating shaft (32), and the worm wheel (35) is meshed with the bidirectional worm (25); the outer end of the bidirectional worm (25) is fixed with a screwing wheel.

7. The auxiliary construction device for welding the rear frame according to claim 6, wherein: the movable frame (2) also comprises a guide cross frame (26); the guide transverse frame (26) is fixed on the transverse mounting frame (21), the middle part of the supporting rotating shaft (32) is in sliding fit in a groove-shaped slideway of the guide transverse frame (26), and the vertical frame body (31) is in sliding fit on the top surface of the guide transverse frame (26).

8. The auxiliary construction device for welding the rear frame according to claim 6, wherein: the frame clamp (4) comprises a lifting rotating pipe (41), a clamp seat (42), an upper clamping plate assembly (43) and a lower clamping plate assembly (44); the inner side of the lifting rotating pipe (41) is in threaded fit connection with the vertical screw (34), the lifting rotating pipe (41) is in running fit in a longitudinal hole of the clamp seat (42), and one end of the clamp seat (42) is in sliding fit with the inner side face of the vertical frame body (31); the upper side of the other end of the clamp seat (42) is provided with a containing chute, and the upper clamping plate assembly (43) is connected in the containing chute; the lower clamping plate component (44) is connected to the lower side of the other end of the clamp seat (42), and the lower clamping plate component (44) and the upper clamping plate component (43) are arranged oppositely.

9. The auxiliary construction device for welding the rear frame according to claim 6, wherein: the upper clamping plate assembly (43) comprises an upper clamping plate body (43a), a limiting sliding block (43b), a transverse guide rod (43c), a rod seat (43d), an extension spring (43e) and a limiting nut (43 f); one end of the upper clamping plate body (43a) is in sliding fit in the containing sliding groove of the clamp seat (42), and the other end of the upper clamping plate body (43a) is provided with an inclined clamping surface which is inclined from bottom to top; the side fixed connection limit slide block (43b) one end of punch holder body (43a), limit slide block (43b) middle part sliding fit is in the limit slide of anchor clamps seat (42) side, limit slide block (43b) other end sliding fit is on horizontal guide bar (43c), horizontal guide bar (43c) one end is passed through pole seat (43d) and is fixed at anchor clamps seat (42) side, horizontal guide bar (43c) other end screw-thread fit limit nut (43f), set up extension spring (43e) on horizontal guide bar (43c), extension spring (43e) both ends respectively with pole seat (43d) and limit slide block (43b) fixed connection.

10. The auxiliary construction device for welding the rear frame according to claim 6, wherein: the lower splint assembly (44) comprises a lower splint body (44a), a turnover shaft (44b), an inclined strut (44c), an upper support seat (44d), a lower support seat (44d) and an adjusting screw rod (44 e); one end of the lower splint body (44a) is fixed on the overturning shaft (44b), the overturning shaft (44b) is rotatably connected to the clamp seat (42), one end of the inclined supporting rod (44c) is rotatably connected with the bottom surface of the lower splint body (44a), the other end of the inclined supporting rod (44c) is rotatably connected with the upper support (44d) and the lower support (44d), the upper support (44d) and the lower support (44d) are in threaded fit with the middle of the adjusting screw rod (44e), and the top end of the adjusting screw rod (44e) is rotatably connected to the bottom surface of the clamp seat (42) through a bearing with a seat.