CN110014255A - Semi-trailer front frame assembly tooling - Google Patents

Abstract

The invention provides a semi-trailer front frame assembly tool, which includes a frame, a traction module positioning mechanism, a front beam positioning mechanism and a longitudinal beam positioning mechanism. The traction module positioning mechanism includes a positioning pin for positioning and matching with the traction pin hole. The front-end beam positioning mechanism is provided with a front-end beam clamping piece and a pair of positioning seats; the longitudinal beam positioning mechanism includes a stop unit and a plurality of groups of clamping and centering units. When the assembly tool assembles the front frame, the positioning pins are fixed in the length and width directions of the frame. When the traction module is matched and sleeved on the positioning pins, the positioning of the traction module in the X and Y directions can be realized; The beam positioning mechanism and the longitudinal beam positioning mechanism cooperate with each other and use the positioning pin as the reference to realize the positioning of the front end beam and the longitudinal beam in the X and Y directions. When using the tooling of the present application to assemble the front frame, there is no need for manual measurement and positioning, and the degree of accuracy is high. At the same time, the participation of personnel in the assembly process can be greatly reduced, and the automation level of the assembly of the front frame can be improved.

Description

Semi-trailer front frame assembly tooling

technical field

The invention relates to the technical field of trailer frame assembly, in particular to a semi-trailer front frame assembly tool.

Background technique

In the prior art, the production of semi-trailers is a typical multi-variety and small-batch production method. At present, the assembly table of the front frame of the semi-trailer has only a small number of simple positioning mechanisms, which can only be limited to the positioning of simple-sized tooling. less accurate. In addition, for the assembly of the front frame of the existing trailer, it needs to be manually determined and then assembled into a complete frame by welding. The whole process requires a lot of manpower, and the automation level of the assembly operation is low.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problems in the prior art that the assembly precision of the front frame of the semi-trailer is low and the automation level of the assembly operation is low.

In order to solve the above technical problems, the present invention provides a semi-trailer front frame assembly tool for positioning and assembly of the longitudinal beam, front end beam and traction module of the front frame, and the semi-trailer front frame assembly tool includes a machine. frame, traction module positioning mechanism, front-end beam positioning mechanism and longitudinal beam positioning mechanism, the traction module positioning mechanism is arranged on the frame, the traction module positioning mechanism includes vertically arranged positioning pins, the positioning pins The position of the frame in the length and width directions is fixed, and the positioning pin is used for positioning and matching with the pulling pin hole of the pulling module; the front-end beam positioning mechanism is arranged at the front end of the frame, and can be positioned in the length direction of the frame. The front-end beam positioning mechanism is provided with a front-end beam clamping piece and a pair of positioning seats that can be relatively close to or away from each other, and each of the positioning seats is provided with a vertical positioning surface. The positioning surfaces of the positioning seat are opposite to each other, and are symmetrically distributed on both sides of the positioning pin in the width direction of the frame; the longitudinal beam positioning mechanism includes a blocking unit and a plurality of sets of clamping and centering units, the blocking The stopper unit is arranged at the rear end of the frame and is spaced apart from the positioning pin; a plurality of groups of the clamping centering units are arranged on the frame at intervals along the length direction of the frame, and each group of the Each of the clamping and centering units includes a pair of oppositely arranged longitudinal beam clamping members, and the two longitudinal beam clamping members are symmetrically distributed on both sides of the positioning pin in the width direction of the frame, and the two longitudinal beam clamping members are symmetrically distributed on both sides of the positioning pin in the width direction of the frame. The stringer clamps can be moved relatively close or far apart simultaneously.

Preferably, the traction module positioning mechanism further comprises a base and a plurality of support columns vertically arranged on the base, and the base is arranged on the frame in a height-adjustable manner; the positioning pins are vertically arranged at On the base, a plurality of the support columns are arranged at intervals on the peripheral side of the positioning pin; the top end of each support column is provided with an adsorption piece for adsorbing and fixing the traction plate of the traction module.

Preferably, a lift screw is provided on the frame, the base is screwed with the lift screw, and the lift screw is driven by a motor, so that the height of the base relative to the frame can be adjusted.

Preferably, the traction module positioning mechanism further includes an anti-rotation stopper, the anti-rotation stopper is provided at the end of the base away from the front end beam positioning mechanism, and the anti-rotation stopper faces the surface of the positioning pin Used to stop on the outside of the traction module.

Preferably, the cross-section of the positioning pin is a circle with notches, and its outer contour has a plurality of arc-shaped sides and a straight side connecting two adjacent arc-shaped sides, and each of the arc-shaped sides is located in the same on the circle.

Preferably, each of the positioning seats is provided with a step structure, and the two parallel vertical surfaces of the step structure respectively constitute a positioning surface, and the positioning surface under the step is along the width direction of the frame. on the inner side of the positioning surface on the step.

Preferably, the front-end beam clamping member includes two oppositely arranged front-end beam clamping blocks, the two front-end beam clamping blocks can be relatively close to or away from each other to clamp or loosen the front-end beam, and the two front-end beams can be clamped or released. The relative movement track of the clamping block is parallel to the length direction of the frame.

Preferably, there are two groups of the front-end beam clamping members, which are respectively arranged on the two positioning seats; a first driving member is fixed on the positioning seat, and the output shaft of the first driving member is along the The length direction of the frame is telescopic; one of the front end beam clamping blocks is fixedly arranged on the output shaft of the first driving member, and the other end beam clamping block is fixedly arranged on the positioning seat.

Preferably, the two positioning bases are connected by positive and negative screw rods, so that the two positioning bases are relatively close to or away from each other synchronously.

Preferably, the blocking unit includes a pair of blocking blocks, the blocking blocks are symmetrically distributed on both sides of the positioning pin in the width direction of the frame, and the blocking blocks face the front-end beam positioning mechanism The end face is used for abutting with the end of the longitudinal beam.

Preferably, the blocking unit is movably arranged on the frame, so that the distance between the blocking unit and the positioning pin is adjustable.

Preferably, the longitudinal beam clamping member includes two longitudinal beam clamping blocks arranged opposite to each other, and the two longitudinal beam clamping blocks can be relatively close to or away from each other to clamp or loosen the longitudinal beam. The trajectory of the relative movement of the clamping blocks is perpendicular to the length direction of the frame.

Preferably, the longitudinal beam clamping member is provided with a clamping seat, and a second driving member is fixed on the clamping seat, and the output shaft of the second driving member extends and retracts along the width direction of the frame; wherein One of the longitudinal beam clamping blocks is fixedly arranged on the output shaft of the second driving member, and the other longitudinal beam clamping block is fixedly arranged on the clamping seat and is located inside the second driving member.

Preferably, the clamping seats of the two longitudinal beam clamping members disposed oppositely are connected by positive and negative screw rods, so that the two longitudinal beam clamping members are relatively close to or away from each other synchronously.

Preferably, it also includes a loading mechanism, the loading mechanism includes two sets of idler rollers, the two sets of idler sets are respectively arranged on both sides of the frame, and each set of the idler sets includes a plurality of sets of idlers along the The idler rollers are arranged at intervals in the length direction of the frame. Each idler roller can rotate around its own axis. The axis direction of the idler roller is perpendicular to the length direction of the frame. The idler roller is opposite to the frame. The height is adjustable.

As can be seen from the above technical solutions, the beneficial effects of the present invention are:

When the assembling tool of the present invention assembles the front frame, the positioning pins are fixed in the length (X direction) and width (Y direction) directions of the frame, and when the traction module is sleeved on the positioning pin, the traction module can be Positioning in the X and Y directions; the front-end beam positioning mechanism and the longitudinal beam positioning mechanism cooperate with each other, and use the positioning pin as the benchmark to realize the positioning of the front-end beam and the longitudinal beam in the X and Y directions. Therefore, when using the tooling of the present application to assemble the front frame, there is no need for manual measurement and positioning, and the degree of accuracy is high. At the same time, the participation of personnel in the assembly process can be greatly reduced, and the automation level of the assembly of the front frame can be improved.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of a semitrailer front frame assembling tooling according to the present invention.

FIG. 2 is a schematic diagram of the use state of the embodiment of the semitrailer front frame assembling tooling according to the present invention.

3 is a schematic structural diagram of a traction module positioning mechanism in an embodiment of a semitrailer front frame assembling tooling according to the present invention.

4 is a schematic structural diagram of a front-end beam positioning mechanism in an embodiment of a semi-trailer front frame assembly tooling according to the present invention.

5 is a schematic structural diagram of a positioning seat in an embodiment of a semitrailer front frame assembling tooling according to the present invention.

6 is a schematic structural diagram of a longitudinal beam positioning mechanism in an embodiment of a semi-trailer front frame assembly tool according to the present invention.

The reference numerals are explained as follows: 1. Assembly tooling; 11. Frame; 12. Traction module positioning mechanism; 121. Positioning pin; 122. Base; , front end beam positioning mechanism; 130, front end beam clamping piece; 131, positioning seat; 132, first positioning surface; 133, second positioning surface; 134, front end beam clamping block; 135, first driving member; 14, Longitudinal beam positioning mechanism; 141, stop unit; 1411, stop block; 142, clamping and centering unit; 143, longitudinal beam clamping piece; 144, longitudinal beam clamping block; 145, clamping seat; 146, second 147, sliding table; 15, loading mechanism; 151, idler; 2, front frame; 21, longitudinal beam; 22, front end beam; 23, traction module; 24, inner beam.

Detailed ways

Exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and drawings therein are essentially used for illustration rather than limitation this invention.

In order to further illustrate the principle and structure of the present invention, the preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

When describing the orientation, take the front frame of the semi-trailer as the benchmark, the length direction is the X direction, the width is the Y direction, and the height direction is the Z direction; in the length direction of the front frame, the front end beam of the front frame is located at The front end, the end opposite to the front end is the rear end.

The present application provides an assembly tool for the front frame of a semi-trailer (hereinafter referred to as "assembly tool"), which is used for the positioning and assembly of the longitudinal beam, the front beam and the traction module of the front frame. Wherein, the traction module is a prefabricated part, which is roughly assembled by a frame beam and a traction plate to form an integral module, wherein the frame beam is generally composed of a plurality of beams, and the traction plate is provided with a traction pin hole for matching with the traction pin.

Referring to FIGS. 1 and 2 , the assembling tool 1 includes a frame 11 , a traction module positioning mechanism 12 , a front beam positioning mechanism 13 and a longitudinal beam positioning mechanism 14 .

Further, the traction module positioning mechanism 12 is disposed on the frame 11 , and the traction module positioning mechanism 12 includes a vertically disposed positioning pin 121 . The positions of the positioning pins 121 in the length and width directions of the frame 11 are fixed, and the positioning pins 121 are used for positioning and matching with the pulling pin holes of the pulling module 23 .

The front end beam positioning mechanism 13 is disposed at the front end of the frame 11 and can be close to or away from the positioning pin 121 in the length direction of the frame 11 . The front-end beam positioning mechanism 13 is provided with a front-end beam clamping member 130 and a pair of positioning seats 131 that can be relatively approached or separated synchronously. Each positioning seat 131 is provided with a vertically arranged positioning surface, the positioning surfaces of the two positioning seats 131 are opposite to each other, and are symmetrically distributed on both sides of the positioning pin 121 in the width direction of the frame 11 .

The longitudinal beam positioning mechanism 14 includes a blocking unit 141 and a plurality of sets of clamping and centering units 142 . The blocking unit 141 is arranged at the rear end of the frame 11 and is arranged at a distance from the positioning pin 121 . A plurality of groups of clamping and centering units 142 are arranged on the frame 11 at intervals along the length direction of the frame 11, and each group of clamping and centering units 142 includes a pair of oppositely arranged longitudinal beam clamping members 143, and the two longitudinal beams clamp The pieces 143 are symmetrically distributed on both sides of the positioning pin 121 in the width direction of the frame 11 , and the two longitudinal beam clamping pieces 143 can be relatively close to or away from each other synchronously.

When the front frame 2 is assembled by using the assembly tool 1 of the present application, the positioning pins 121 are fixed in the length and width directions of the frame 11 . Positioning in the X and Y directions; the front beam positioning mechanism 13 and the longitudinal beam positioning mechanism 14 cooperate with each other, and use the positioning pin 121 as a reference to realize the positioning of the front beam 22 and the longitudinal beam 21 in the X and Y directions. Therefore, when the front frame 2 is assembled by using the assembly tool 1 of the present application, manual measurement and positioning are not required, and the degree of accuracy is high.

Specifically, referring to FIG. 3 , in this embodiment, the cross-section of the positioning pin 121 is a circle with notches, and its outer contour has a plurality of arc-shaped sides and a straight side connecting two adjacent arc-shaped sides. The arc-shaped sides are located on the same circle, and the position of the straight side constitutes a gap in the cross-section of the positioning pin 121 .

When the traction module 23 is sleeved on the positioning pin 121, the setting of the notch on the positioning pin 121 can prevent the positioning pin 121 from over-fitting with the traction plate, and can not only avoid the positioning pin 121 when the traction module 23 is sleeved on the positioning pin 121. The wear of the traction plate, and after the assembly of the front frame 2 is completed, the positioning pin 121 can be easily withdrawn from the traction pin hole.

In this embodiment, the positioning pin 121 is located on the center line of the frame 11 in the width direction. This arrangement can facilitate the alignment of the front beam 22 and the longitudinal beam 21 with the positioning pin 121 as a reference in the Y direction.

Further, the traction module positioning mechanism 12 further includes a base 122 and a plurality of support columns 123 vertically arranged on the base 122 , and the support columns 123 are used to carry and support the traction module 23 . The base 122 is arranged on the frame 11 in a height-adjustable manner, the positioning pin 121 is vertically arranged on the base 122 , and a plurality of support columns 123 are arranged at intervals around the positioning pin 121 .

Preferably, the top end of the support column 123 is provided with an adsorption member 124 , and the adsorption member 124 in this embodiment is an electromagnet. The traction plate of the traction module 23 is made of metal. When the traction module 23 is sleeved on the positioning pin 121 , the adsorption member 124 can adsorb the traction plate, so that the traction module 23 can be stably fixed on the support column 123 in the vertical direction. superior.

In this embodiment, the frame 11 is provided with a lift screw, and the base 122 is screwed with the lift screw. The lifting screw is driven by the motor, so that the height of the base 122 relative to the frame 11 is adjustable, so that the traction module positioning mechanism 12 can be adapted to the traction modules 23 of different height models. In addition, when the base 122 is lifted relative to the rack 11 , the traction module 23 carried by the support column 123 can be lifted and lowered accordingly, so as to adjust the height of the traction module 23 relative to the rack 11 .

As shown in FIG. 3 , the traction module positioning mechanism 12 further includes an anti-rotation block 125 . The anti-rotation block 125 is arranged at one end of the base 122 away from the front-end beam positioning mechanism 13 . The anti-rotation block 125 faces the side of the positioning pin 121 for It stops at the outside of the beam of the traction module 23 . When the traction pin hole of the traction module 23 is positioned and matched with the positioning pin 121, the anti-rotation block 125 can be stopped on the outside of the traction module 23, so as to limit the rotation degree of freedom of the traction plate in the horizontal direction, not only to ensure that the traction module 23 is in the X The positioning of the traction module 23 in the Z direction is fixed, and the rotation degree of freedom of the traction module 23 in the Z direction is prevented, so that the positioning of the traction module 23 in the Z direction is realized.

Further, referring to FIGS. 4 and 5 , in the front beam positioning mechanism 13 , each positioning seat 131 is provided with a stepped structure, and two parallel vertical surfaces in each stepped structure respectively constitute a positioning surface. In this embodiment, the positioning surface located above the step is the first positioning surface 132 , and the positioning surface located below the step is the second positioning surface 133 . In the width direction of the rack 11 , the second positioning surface 133 of this embodiment is located inside the first positioning surface 132 .

The first positioning surface 132 and the second positioning surface 133 distributed in steps in the two oppositely arranged positioning seats 131 can respectively realize the alignment of the front end beams 22 of the two different models of the flat-storage semi-trailer and the skeleton semi-trailer in the Y direction. middle positioning.

Among them, the semi-trailer with flat barn is used for directly pulling and loading goods, and there is no lock seat on the front end beam 22 thereof. When the above-mentioned front-end beam positioning mechanism 13 is used to realize the centering and positioning, the two oppositely arranged positioning seats 131 are synchronously approached, and the first positioning surfaces 132 in the two positioning seats 131 are also synchronously approached, respectively abutting the two sides of the front-end beam 22 of the semi-trailer. end face, so that the front end beam 22 can be centered in the Y direction.

However, in some types of semi-trailers, such as frame semi-trailers, both ends of the front beam 22 of the front frame 2 are provided with lock seats for cooperating and fixing with the container. When the front frame 2 of this type of semi-trailer is assembled, when the two oppositely arranged positioning seats 131 in the front end beam positioning mechanism 13 approach synchronously, the second positioning surfaces 133 in the two positioning seats 131 also approach synchronously, so as to respectively. Abutting on the outer sides of the lock seats at both ends of the front end beam 22 , so as to realize the central positioning of the front end beam 22 with the lock seats in the Y direction.

In the prior art, the leveling semi-trailer and the skeleton semi-trailer are generally produced as two completely different vehicle models. In the present application, by using the two positioning surfaces provided on each positioning seat 131 in the front-end beam positioning mechanism 13, when assembling different vehicle models, different positioning surfaces can be used for centering and positioning, which satisfies the two requirements. The positioning requirements of the front end beams 22 of different vehicle models expand the scope of application of the assembly tooling 1 and improve the versatility.

In this embodiment, the two oppositely arranged positioning seats 131 are connected by a positive and negative screw rod. Driven by the motor, the two positioning bases 131 can be relatively close to or away from each other synchronously.

Referring to FIG. 4 , the front end beam clamping member 130 includes two front end beam clamping blocks 134 disposed opposite to each other. The two front end beam clamping blocks 134 can be relatively close to or apart to clamp or loosen the front end beam 22. The two front end beam clamping blocks The relative motion trajectory of 134 is parallel to the length direction of the frame 11 . After the front end beam 22 is centered in the Y direction, the front end beam clamping block 134 is relatively close to the front end beam 22 and can clamp the front end beam 22 so that the position of the front end beam 22 in the Y direction is fixed.

Specifically, in this embodiment, there are two groups of front-end beam clamping members 130 , which are respectively disposed on the two positioning seats 131 . A first driving member 135 is fixed on each positioning seat 131 , and the first driving member 135 has an output shaft that extends and retracts along the length direction of the frame 11 . In the front end beam clamping member 130 , one front end beam clamping block 134 is fixedly arranged on the output shaft of the first driving member 135 , and the other front end beam clamping block 134 is fixedly arranged on the positioning seat 131 .

When the output shaft of the first driving member 135 is extended, the front beam clamping block 134 on the output shaft of the first driving member 135 can push the front beam 22 toward the other front beam clamping block in the longitudinal direction of the frame 11 . 134 are close to each other, so that the two front end beam clamping blocks 134 are respectively abutted on both sides of the front end beam 22 , so as to fix and clamp the front end beam 22 .

After the front end beam 22 is centered in the Y direction, the front end beam clamping member 130 clamps and fixes the front end beam 22, and the front end beam positioning mechanism 13 approaches the positioning pin 121 in the longitudinal direction of the frame 11, so that the side surface of the front end beam 22 is fixed. Fitting with the end face of the traction module 23, so as to realize the positioning of the front end beam 22 in the X direction.

In this embodiment, the front-end beam positioning mechanism 13 can be driven by an air cylinder or an oil cylinder to approach or move away from the positioning pin 121 in the length direction of the frame 11 .

Further, referring to FIG. 6 , in the longitudinal beam positioning mechanism 14 , the blocking unit 141 includes a pair of blocking blocks 1411 . Two blocks 1411 are symmetrically distributed on both sides of the positioning pin 121 in the width direction of the frame 11 .

After the front end beam clamping block 134 clamps and fixes the front end beam 22, the front end beam positioning mechanism 13 is brought close to the positioning pin 121 in the longitudinal direction of the frame 11. When the side surface of the front end beam 22 is in contact with the front end surface of the longitudinal beam 21, The front end beam positioning mechanism 13 can drive the longitudinal beam 21 to move along the length direction of the frame 11 , so that the rear end surface of the longitudinal beam 21 abuts on the stopper 1411 to realize the positioning of the longitudinal beam 21 in the X direction.

In this embodiment, the blocking unit 141 is movably disposed on the frame 11 so that the distance between the blocking unit 141 and the positioning pin 121 is adjustable. This arrangement can expand the scope of application of the assembly tool 1 to adapt to the assembly of longitudinal beams 21 of different lengths. It should be noted that, during the assembly process of the front frame 2, the distance between the blocking unit 141 and the positioning pin 121 remains unchanged.

As shown in FIG. 6 , the longitudinal beam clamping member 143 includes two longitudinal beam clamping blocks 144 arranged opposite to each other, and the two longitudinal beam clamping blocks 144 can be relatively close to or away from each other to clamp or loosen the longitudinal beam 21 . The relative movement track of the tightening block 144 is perpendicular to the length direction of the frame 11 .

Specifically, in this embodiment, each longitudinal beam clamping member 143 is provided with a clamping seat 145 . A second driving member 146 is fixed on the clamping base 145 , and the second driving member 146 has an output shaft that is telescopic along the width direction of the frame 11 . Among the longitudinal beam clamping members 143 , one longitudinal beam clamping block 144 is fixedly arranged on the output shaft of the second driving member 146 , and the other longitudinal beam clamping block 144 is fixedly arranged on the clamping seat 145 and is located in the first The inner side of the two driving members 146 .

When the output shaft of the second driving member 146 is extended, the longitudinal beam clamping block 144 on the output shaft of the second driving member 146 can abut against the outer side of the web of the longitudinal beam 21 and push it in the width direction of the frame 11 The longitudinal beam 21 is approached toward the other front longitudinal beam clamping block 144, so that the other longitudinal beam clamping block 144 is in close contact with the inner surface of the web of the longitudinal beam 21, so that the two longitudinal beam clamping blocks 144 abut on the longitudinal beam respectively. On both sides of the beam 21, the clamping and fixing of the longitudinal beam 21 is ensured.

In this embodiment, a distance is set between the lower end surfaces of the two longitudinal beam clamping blocks 144 and the upper end surface of the clamping seat 145 for accommodating the lower wings of the longitudinal beam 21 .

Further, the clamping bases 145 of the two longitudinal beam clamping members 143 disposed opposite to each other are connected by positive and negative screw rods, and driven by the motor, the two longitudinal beam clamping members 143 can be relatively close to or away from each other synchronously.

After the two longitudinal beams 21 of the frame are positioned in the X direction, the longitudinal beam clamping blocks 144 of the longitudinal beam clamping members 143 fix and clamp the longitudinal beams 21, and drive the two longitudinal beam clamping members 143 to move away synchronously, so that the two longitudinal beams 21 The distance therebetween is greater than the length of the inner cross member 24 of the front frame 2 . At this time, the positioning and installation of the inner cross beam 24 is performed manually through the positioning instructions provided on the web plate of the longitudinal beam 21 in advance. After the inner beam 24 of the front frame 2 is installed, the two longitudinal beam clamping members 143 are driven to approach synchronously, so that the inner sides of the two longitudinal beams 21 abut the two ends of the inner beam 24 respectively, so that the longitudinal beam 21 is positioned in the Y position. orientation.

In this embodiment, the two clamping bases 145 are mounted on a sliding table 147 , and are relatively close to or away from each other on the sliding table 147 . The sliding table 147 is movably arranged on the frame 11 to be close to or away from the positioning pin 121 in the length direction of the frame 11 , so that the distance between the clamping seat 145 and the positioning pin 121 can be adjusted. This arrangement can expand the scope of application of the assembly tool 1 to adapt to the assembly of longitudinal beams 21 of different lengths. It should be noted that, during the assembly process of the front frame 2, the distance between the clamping seat 145 and the positioning pin 121 remains unchanged.

In addition, referring to FIGS. 1 and 2 , the assembling tool 1 for the front frame 2 of this embodiment further includes a loading mechanism 15 . The loading mechanism 15 includes two sets of idler rollers, and the two sets of idler rollers are respectively arranged on both sides of the frame 11 . Each set of idlers includes a plurality of idlers 151 spaced along the length of the frame 11 , each idler 151 can rotate around its own axis, and the axis of the idler 151 is perpendicular to the length of the frame 11 , The height of the idler 151 relative to the frame 11 is adjustable.

The idler 151 rotates to transport the longitudinal beam 21 to be assembled to the frame 11 . When the longitudinal beam 21 falls on the clamping seat 145 , the idler 151 descends relative to the frame 11 to avoid assembling on the front frame 2 Interference with the longitudinal beam 21 occurs during the process. After the whole assembly of the front frame 2 is completed, the idler 151 rises to be flush with the upper end surface of the clamping seat 145. At this time, the idler 151 rotates to transport the front frame 2 of the semi-trailer to the next work station.

When using the assembly tool 1 of the present embodiment to assemble the front frame 2 of the semi-trailer, the specific assembly process is as follows:

The longitudinal beam 21 is transported to the frame 11 by the idler 151, so that the longitudinal beam 21 falls on the clamping seat 145, and the idler 151 is lowered relative to the frame 11 at this time; the two longitudinal beam clamping blocks 144 are driven relatively close to clamp Tighten the longitudinal beam 21, and then drive the two longitudinal beam clamping pieces 143 disposed opposite to each other to be relatively close to make the distance between the two longitudinal beams 21 reach the first set value, and then drive the two longitudinal beam clamping blocks 144 to be relatively away from each other to loosen Open the longitudinal beam 21 .

The front end beam 22 is loaded and falls on the positioning seat 131, and the two opposite positioning seats 131 are driven to approach synchronously, so that the first positioning surface 132 abuts the end of the front end beam 22, or the second positioning surface 133 Abutting on the outer side of the locking seat of the front end beam 22 to realize the positioning of the front end beam 22 in the Y direction; then fix and clamp the front end beam 22 through the front end beam clamping member 130, and drive the front end beam positioning mechanism 13 to approach the positioning pin in the length direction. 121, the front end beam 22 moves accordingly to push the longitudinal beam 21, so that the end of the longitudinal beam 21 abuts on the blocking unit 141, so as to realize the positioning of the longitudinal beam 21 in the X direction; after the longitudinal beam 21 is positioned in the X direction , the front end beam positioning mechanism 13 is away from the positioning pin 121 .

The traction module 23 is loaded, so that the traction pin hole and the positioning pin 121 are positioned and matched to realize the positioning of the traction module 23 in the X and Y directions; the driving base 122 makes the traction module 23 rise a certain distance, so that the upper wings of the two longitudinal beams 21 The respective areas of the plates are located in the recesses on both sides of the traction module 23 . Then make the longitudinal beam clamping block 144 clamp and fix the longitudinal beam 21, drive the longitudinal beam clamping member 143 to make the distance between the two longitudinal beams 21 reach the second set value, and manually position and install the inner beam 24 of the front frame 2 , and then drive the longitudinal beam clamping member 143 to make the distance between the two longitudinal beams 21 reach the third set value. At this time, the inner sides of the two longitudinal beams 21 are respectively abutted on both ends of the inner beam 24, so as to realize the longitudinal beam 21 is positioned in the Y direction.

After the positioning of the longitudinal beam 21 in the Y direction is completed, the driving base 122 lowers the traction module 23 to fit with the upper wing plate of the longitudinal beam 21, so as to realize the positioning and fixing of the traction module 23 in the Z direction; and then drive the front end beam positioning mechanism 13 is close to the positioning pin 121 in the longitudinal direction, so that the side surface of the front end beam 22 is abutted with the ends of the longitudinal beam 21 and the traction module 23, so as to realize the positioning of the front end beam 22 in the X direction.

After the positioning and clamping of the components of the front frame 2 is completed, welding and fixing are performed using welding equipment to complete the assembly of the front frame 2 of the semi-trailer. The idler 151 rises and rotates, so as to transport the assembled front frame 2 to the next work station.

The second set value is the length of the inner beam 24 of the front frame 2 , the first set value is smaller than the second set value, and the third set value is greater than the second set value.

To sum up, when the front frame is assembled by using the assembly tool of the present application, the position of the positioning pin is fixed in the length and width directions of the frame. Positioning in the Y direction; the front-end beam positioning mechanism and the longitudinal beam positioning mechanism cooperate with each other, and use the positioning pin as the benchmark to realize the positioning of the front-end beam and the longitudinal beam in the X and Y directions. Therefore, when using the tooling of the present application to assemble the front frame, there is no need for manual measurement and positioning, and the degree of accuracy is high. At the same time, the participation of personnel in the assembly process can be greatly reduced, and the automation level of the assembly of the front frame can be improved. In addition, the assembly tooling of the present application can be applied to the assembly of different types of semi-trailer front frames, thereby enabling flexible production of multi-model mixed lines.

While the present invention has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is of description and illustration, and not of limitation. Since the invention can be embodied in many forms without departing from the spirit or spirit of the invention, it is to be understood that the above-described embodiments are not limited to any of the foregoing details, but are to be construed broadly within the spirit and scope defined by the appended claims Therefore, all changes and modifications that come within the scope of the claims or their equivalents should be covered by the appended claims.

Claims (15)

1. A semi-trailer front frame assembly tooling, used for the positioning assembly of the longitudinal beam, front end beam and traction module of the front frame, is characterized in that, the semi-trailer front frame assembly tooling comprises: frame; A traction module positioning mechanism is provided on the frame, the traction module positioning mechanism includes a vertically arranged positioning pin, the position of the positioning pin in the length and width directions of the frame is fixed, and the positioning pin is used for connecting with the frame. The traction pin holes of the traction module are positioned and matched; The front-end beam positioning mechanism is arranged at the front end of the frame and can be close to or away from the positioning pin in the longitudinal direction of the frame; the front-end beam positioning mechanism is provided with a front-end beam clamping piece and a pair of synchronizable Positioning seats that are relatively close or far away, each of the positioning seats is provided with a vertical positioning surface, the positioning surfaces of the two positioning seats are opposite to each other, and are symmetrically distributed on the positioning pins in the width direction of the frame both sides; The longitudinal beam positioning mechanism includes a stop unit and a plurality of sets of clamping and centering units, the stop units are arranged at the rear end of the frame and are arranged at intervals from the positioning pins; multiple sets of the clamping and centering units They are arranged on the frame at intervals along the length direction of the frame. The width direction of the frame is symmetrically distributed on both sides of the positioning pin, and the two longitudinal beam clamping parts can be relatively close to or apart from each other synchronously. 2 . The assembling tool for the front frame of a semi-trailer according to claim 1 , wherein the traction module positioning mechanism further comprises a base and a plurality of support columns vertically arranged on the base, and the base height can be adjusted. 3 . The positioning pin is vertically arranged on the base, and a plurality of the support columns are arranged at intervals on the peripheral side of the positioning pin; the top of each support column is provided with There are adsorption parts to adsorb and fix the traction plate of the traction module. 3. The assembling tool for the front frame of a semi-trailer according to claim 2, wherein the frame is provided with a lifting screw, the base is screwed with the lifting screw, and the lifting screw is driven by a motor. driven so that the height of the base relative to the frame is adjustable. 4 . The assembling tool for the front frame of a semi-trailer according to claim 2 , wherein the traction module positioning mechanism further comprises an anti-rotation block, and the anti-rotation block is arranged on the base away from the front end beam. 5 . At one end of the positioning mechanism, the surface of the anti-rotation blocking block facing the positioning pin is used to block the outside of the traction module. 5. The assembling tool for the front frame of a semi-trailer according to claim 1, wherein the cross-section of the positioning pin is a circle with notches, and its outer contour has a plurality of arc edges and connects adjacent two The straight side of the arc-shaped side, each of the arc-shaped sides is located on the same circle. 6 . The assembling tool for the front frame of a semi-trailer according to claim 1 , wherein each of the positioning seats is provided with a step structure, and the two parallel vertical surfaces of the step structure respectively form a A positioning surface, the positioning surface under the step is located on the inner side of the positioning surface on the step along the width direction of the rack. 7 . The assembling tool for the front frame of a semi-trailer according to claim 1 , wherein the front end beam clamping member comprises two oppositely arranged front end beam clamping blocks, and the two front end beam clamping blocks can be relatively close to each other. 8 . or away from each other to clamp or loosen the front end beam, the relative movement track of the two front end beam clamping blocks is parallel to the length direction of the frame. 8 . The assembling tool for the front frame of the semi-trailer according to claim 7 , wherein the front-end beam clamping members are provided with two groups, which are respectively arranged on the two positioning seats; There is a first driving member, and the output shaft of the first driving member is telescopic along the length direction of the frame; one of the front-end beam clamping blocks is fixedly arranged on the output shaft of the first driving member, and the other is fixed on the output shaft of the first driving member. The front end beam clamping block is fixedly arranged on the positioning seat. 9 . The assembling tool for the front frame of the semi-trailer according to claim 1 , wherein the two positioning seats are connected by positive and negative screw rods, so that the two positioning seats are relatively close to or away from each other synchronously. 10 . 10 . The assembling tool for the front frame of a semi-trailer according to claim 1 , wherein the blocking unit comprises a pair of blocking blocks, and the two blocking blocks are symmetrically distributed in the width direction of the frame. 11 . On both sides of the positioning pin, the end faces of the block facing the front end beam positioning mechanism are used for abutting with the end of the longitudinal beam. 11. The assembling tool for the front frame of a semi-trailer according to claim 1 or 10, wherein the blocking unit is movably arranged on the frame, so that the blocking unit and the positioning pin are in contact with each other. The distance between them is adjustable. 12 . The assembling tool for the front frame of a semi-trailer according to claim 1 , wherein the longitudinal beam clamping member comprises two longitudinal beam clamping blocks arranged opposite to each other, and the two longitudinal beam clamping blocks can be relatively close to each other. 13 . Or move away from each other to clamp or loosen the longitudinal beam, and the relative movement track of the two longitudinal beam clamping blocks is perpendicular to the length direction of the frame. 13 . The assembling tool for the front frame of a semi-trailer according to claim 12 , wherein the longitudinal beam clamping member is provided with a clamping seat, and a second driving member is fixed on the clamping seat, and the clamping seat is 13 . 13 . The output shaft of the second driving member is telescopic along the width direction of the frame; one of the longitudinal beam clamping blocks is fixedly arranged on the output shaft of the second driving member, and the other longitudinal beam clamping block is fixedly arranged on the clamping seat and inside the second driving member. 14 . The assembling tool for the front frame of a semi-trailer according to claim 13 , wherein the clamping seats of the two longitudinal beam clamping members arranged opposite to each other are connected by positive and negative screw rods, so that the two The stringer clamps are moved relatively close or apart simultaneously. 15 . The assembling tool for the front frame of the semi-trailer according to claim 1 , further comprising a material loading mechanism, the material loading mechanism comprising two sets of idler rollers, and the two sets of idler groups are respectively arranged on the said 15 . On both sides of the frame, each set of the idler group includes a plurality of idler rollers arranged at intervals along the length direction of the frame, each of the idler rollers can rotate around its own axis, and the axis direction of the idler rollers Perpendicular to the length direction of the frame, the height of the idler relative to the frame is adjustable.