Special vehicle front frame assembly

Abstract

The present invention discloses a combination device of a front frame of a special vehicle, the front frame includes a front end beam and a small main beam, and is characterized in that the combination device includes: an end elastic jacking mechanism, used to support the front end beam transported to a position, and used to adjust the height of the front end beam; an upper clamping and positioning mechanism, used to clamp the front end beam and contact the small main beam transported to a position by the conveying roller; when the upper clamping and positioning mechanism is working, the front end beam is first pressed down, and the front end beam compresses the elastic part of the end elastic jacking mechanism, and the height of the front end beam is reduced, so that the upper clamping and positioning mechanism can contact the bottom surface of the front end beam and the bottom surface of the small main beam at the same time. The combination device of the front frame of a special vehicle of the present invention saves labor costs and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the manufacturing field of special-purpose vehicles, and in particular to a combination device of a front frame of a special-purpose vehicle. Background Art

[0002] With the rapid development of the economy, the road transport industry has higher and higher requirements for the quality and manufacturing precision of special vehicles (such as semi-trailers). Generally, the frame of a semi-trailer is composed of a front frame, a middle frame and a rear beam. At present, in the special vehicle industry, the front beam and the small main beam are assembled in a fixed positioning manner. Since the front beam channel steel is formed by multiple bending, there will inevitably be a certain dimensional error. It is impossible to ensure that the bottom surface of the front beam and the bottom surface of the small main beam are flush after each assembly. Therefore, manual adjustment is required, which is time-consuming and labor-intensive, with low production efficiency and high labor costs. Summary of the invention

[0003] The purpose of the present invention is to provide a combination device for a special vehicle front frame in order to solve the problem that the bottom surface of the front end beam and the bottom surface of the small main beam are not flush in the prior art assembly method, which requires manual adjustment, resulting in low production efficiency and high labor costs.

[0004] The present invention provides a combination device of a front frame of a special vehicle, wherein the front frame comprises a front end beam and a small main beam, including:

[0005] An end elastic tightening mechanism is used to support the front end beam that has been delivered to the position and to adjust the height of the front end beam;

[0006] An upper pressing and positioning mechanism is used to press the front end beam and contact the small main beam transported to the position by the conveying roller;

[0007] When the front end beam and the small main beam are combined, the front end beam is positioned on the end elastic clamping mechanism with the bottom facing upward, and the small main beam is located above the conveying roller with the bottom facing upward. In the initial state, the bottom surface of the front end beam is higher than the bottom surface of the small main beam. When the upper clamping and positioning mechanism works, the front end beam is first pressed down, and the front end beam compresses the elastic part of the end elastic clamping mechanism. The height of the front end beam is reduced, so that the upper clamping and positioning mechanism can contact the bottom surfaces of the front end beam and the bottom surfaces of the small main beam at the same time.

[0008] Optionally, there are two end elastic tightening mechanisms, which are respectively located on both sides of the front end of the conveyor roller and are used to support the two ends of the front end beam.

[0009] Optionally, each of the end elastic tightening mechanisms comprises a tightening platform, an elastic member accommodating mechanism and the elastic member, and the tightening platform is mounted on the base of the assembly device of the front frame of the special vehicle through a bottom plate;

[0010] The jacking platform includes a support platform for supporting the front end beam and a first leg connected to the support platform;

[0011] The elastic member accommodating mechanism has a cavity for accommodating the first leg and the elastic member, the cavity runs through the entire elastic member accommodating mechanism, and an adjustable fastener for locking the elastic member is provided at the tail end of the elastic member accommodating mechanism;

[0012] The first leg can be inserted into the cavity and pass through the adjustable fastener. The first leg can move up and down relative to the cavity. The height of the tightening platform can be adjusted by adjusting the adjustable fastener.

[0013] Optionally, the tightening platform further includes a second leg, and the end elastic tightening mechanism further includes a guiding mechanism, the guiding mechanism having a guiding through hole, and the second leg is inserted into the guiding through hole of the guiding mechanism and can move up and down relative to the guiding through hole.

[0014] Optionally, a limit block is provided at the tail end of the first supporting leg and the tail end of the second supporting leg respectively, and the limit block is used to limit the upward movement distance of the tightening platform.

[0015] Optionally, the combined device further comprises a workpiece lifting mechanism, and the workpiece lifting mechanism is used to lower the front end beam delivered to the position onto the tightening platform;

[0016] The end elastic jacking mechanism further comprises a positioning mechanism, and the positioning mechanism is used to position the front end beam at a predetermined position of the jacking platform.

[0017] Optionally, the assembly device of the front frame of the special vehicle also includes a clamp for clamping the small main beam, and the clamp is arranged on the outer side of the conveying roller.

[0018] Optionally, the upper clamping and positioning mechanism includes a cylinder and a pressure block connected to the cylinder, and the pressure block can move up and down under the drive of the cylinder. When the pressure block descends to a predetermined position, the pressure block can contact the front end beam and the small main beam at the same time.

[0019] Optionally, the pressing block includes a transverse portion and a vertical portion perpendicular to the transverse portion, the transverse portion and the vertical portion form a T-shape, and when the pressing block is pressed downward, the transverse portion is located between the angle formed by the front end beam and the small main beam.

[0020] Optionally, there are two upper clamping and positioning mechanisms and two small main beams, and the two upper clamping and positioning mechanisms are respectively located near the connection between the two small main beams and the front end beam.

[0021] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0022] The combination device of the special vehicle front frame of the present invention is provided with an end elastic tightening mechanism and an upper clamping and positioning mechanism, and the front end beam and the small main beam of the special vehicle front frame are conveyed with the bottom surface facing upward. Therefore, under the downward pressure of the upper clamping and positioning mechanism and the action of the elastic part of the end elastic tightening mechanism, the combination device can automatically adjust the height of the front end beam, so that the bottom surface of the front vehicle beam is automatically flush with the bottom surface of the small main beam without manual adjustment. Compared with the prior art, it saves labor costs and improves production efficiency.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the assembly device of the special vehicle front frame of the present invention when the front end beam and the small main beam are assembled.

[0026] Figure 2 It is a top view of the assembly device of the special front frame of the present invention.

[0027] Figure 3 for Figure 2 Schematic diagram of the cross section along the median section line AA.

[0028] Figure 4 The figure is a schematic structural diagram of a front frame assembled by using the assembly device of the special vehicle front frame of the present invention.

[0029] Figure 5 for Figure 4 Side view of. DETAILED DESCRIPTION

[0030] In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0031] like Figure 1 and Figure 2 As shown, Figure 1 It is a three-dimensional structural schematic diagram of the assembly device of the special vehicle front frame of the present invention when the front end beam and the small main beam are assembled. Figure 2The top view of the assembly device of the front frame of the special vehicle of the present invention. The assembly device 100 of the front frame of the special vehicle of the present invention comprises an end elastic pressing mechanism 10, a workpiece lifting mechanism 20, an upper pressing and positioning mechanism 30, a clamp 40, and a conveying roller 60 for conveying the small main beam 51 of the front frame of the special vehicle. There are two sets of the workpiece lifting mechanism 20, which are respectively located on both sides of the front end of the conveying roller 60.

[0032] The front end beam 52 of the front frame 50 of the special vehicle is conveyed to the workpiece lifting mechanism 20 at the front end with the bottom facing upward through another conveyor roller. The workpiece lifting mechanism 20 moves downward under the drive of its cylinder, and the front end beam 52 descends. The two ends of the front end beam 52 are supported by the end elastic tightening mechanism 10 and positioned on the end elastic tightening mechanism 10.

[0033] There are two end elastic tightening mechanisms 10, which are respectively located on both sides of the front end of the conveying roller 60 and outside the workpiece lifting mechanism 20. The two end elastic tightening mechanisms 10 are used to support the two ends of the front end beam 52 that has been conveyed to the position. In the initial state, the height of the front end beam 52 is higher than the height of the small main beam 51.

[0034] Combination Figure 3 As shown, Figure 3 for Figure 2 Schematic cross-sectional view of the middle section line AA. Each end elastic tightening mechanism 10 includes a tightening platform 11, an elastic member accommodating mechanism 121, a guide mechanism 122, an elastic member 13, an adjustable fastener 14 and a positioning mechanism 15. The end elastic tightening mechanism 10 is supported on a base 17 through a column 16. The tightening platform 11 is supported above the column 16 through a bottom plate 18. The elastic member 13 can be a spring.

[0035] The tightening platform 11 includes a supporting platform 111 for supporting the end of the front end beam 52, at least one first leg 112 and at least two second legs 113. The supporting platform 111 is installed on the bottom plate 18, and the first leg 112 and the second leg 113 can move up and down relative to the bottom plate 18. An elastic member accommodating mechanism 121 is provided corresponding to each first leg 112, and a guide mechanism 122 is provided corresponding to each second leg 113. The elastic member accommodating mechanism 121 and the guide mechanism 122 are provided below the supporting platform 111 and fixed on the bottom plate 18. The first leg 112 and the second leg 113 can be inserted into the elastic member accommodating mechanism 121 and the guide mechanism 122 respectively, and can move up and down relative to the elastic member accommodating mechanism 121 and the guide mechanism 122 respectively. A cavity for accommodating the first leg 112 is provided in the axial direction of the elastic member accommodating mechanism 121. The cavity runs through the head end to the tail end of the elastic member accommodating mechanism 121. The first leg 112 is T-shaped, with its head end located above the cavity, and its tail end can be inserted into the cavity provided with the elastic member 13. An adjustable fastener 14 is provided at the tail end of the cavity to lock the elastic member 13 in the cavity. The elastic member 13 is wound into a spiral shape, and the first leg 112 can be inserted into the spiral elastic member 13 and its tail end passes through the adjustable fastener 14. The head end of the first leg 112 contacts the elastic member 13, so that when the first leg 112 is subjected to a force from the support platform 111, the head end of the first leg 112 is located at the top of the elastic member 13 and can compress the elastic member 13. The adjustable fastener 14 can be an adjustable nut, which cooperates with the threaded outer wall of the elastic member accommodating mechanism 121 to achieve fastening. When the combination device 100 of the present invention is used for the combination of different vehicle models, the height of the front end beam can be adjusted by adjusting the adjustable nut, so that the height of the front end beam is higher than the height of the small main beam 51 in the initial state.

[0036] In addition, the tightening platform 11 is also provided with a limit block 115, which is bolted to the tail end of the first leg 112. The length of the limit block 115 is greater than the diameter of the middle hole of the adjustable nut to limit the upward movement distance of the support platform 111 and prevent the support platform 111 from moving up too much.

[0037] A guide hole for accommodating the second leg 113 is provided in the axial direction of the guide mechanism 122. The guide hole runs through from one end to the other end of the guide mechanism 122. The second leg 113 is inserted into the guide hole corresponding to the guide mechanism 122, and the upper end of the second leg 113 is fixed on the middle plate 114 of the tightening platform 10, and the upper end thereof is spaced a predetermined distance from the top of the guide mechanism 122, so that the second leg 113 will not be blocked by the guide mechanism 122 when the first leg 112 moves downward.

[0038] In addition, a limiting block 123 is also disposed at the bottom of the second supporting leg 113 . The length of the limiting block 123 is greater than the aperture of the guide through hole of the guiding mechanism 122 , so as to limit the upward movement distance of the supporting platform 111 .

[0039] The tightening platform 11 can prevent the supporting platform 111 from tilting when carrying the front end beam 52 through the cooperation between the second supporting leg 113 and the guiding mechanism 122 .

[0040] Under the guidance of the guide mechanism 122, the gravity of the front beam 52 maintains dynamic balance with the elastic force of the elastic member 13 at a suitable position. After the front beam 52 is dynamically balanced, the positioning mechanism 15 is activated to ensure that the front beam 52 is located at a suitable position on the support platform 111. The positioning mechanism 15 can be a cylinder.

[0041] like Figure 1 As shown, when the front end beam 52 is transported to the position, the two small main beams 51 are transported with the bottom facing upward through the conveying roller 60. When the small main beam 51 is transported to the position, it falls on the support platform corresponding to the assembly device 100. An upper clamping and positioning mechanism 30 is respectively arranged near the connection between the two small main beams 51 and the front end beam 52. The upper clamping and positioning mechanism 30 includes a cylinder 31 and a pressure block 32 connected to the cylinder 31, and the pressure block 32 can move up and down in the height direction under the drive of the cylinder 31. When the pressure block 32 drops to the predetermined position, the pressure block 32 can contact the bottom surface of the front end beam 52 and the small main beam 51 at the same time.

[0042] The pressing block 32 includes a transverse portion 321 and a vertical portion 322 perpendicular to the transverse portion 321. The transverse portion 321 and the vertical portion 322 form a T-shape. When the pressing block 32 is pressed down, the transverse portion 321 is located between the angle formed by the front end beam 52 and the small main beam 51, so that when the pressing block 32 is pressed down into place, it can fully contact the front end beam 52 and the small main beam 51.

[0043] The working process of the combined device of the special front frame of the present invention is as follows:

[0044] The front end beam 52 is conveyed to the workpiece lifting mechanism 20 with the bottom facing upward through the conveying roller. The workpiece lifting mechanism 20 moves downward under the drive of its cylinder, and the front end beam 52 descends. The two ends of the front end beam 52 are supported by the end elastic tightening mechanism 10. The gravity of the front end beam 51 is guided by the guide mechanism 122 and the elastic force of the elastic member 13 to maintain dynamic balance at the appropriate position. Subsequently, the positioning mechanism 15 is activated to tighten the front end beam 52 to ensure the relative position of the front end beam 52 on the end elastic tightening mechanism 10. In the initial state, the bottom surface of the front end beam 52 is higher than the bottom surface of the small main beam 51;

[0045] Next, the small main beam 51 with the bottom facing upward is transported by the conveying roller 60. When the small main beam 51 is transported to the right position, the small main beam 51 falls on the supporting platform corresponding to the assembly device 100, and the clamp 40 presses the small main beam 51. Then the upper pressing and positioning mechanism 30 is actuated, and the pressing block 32 of the upper pressing and positioning mechanism 30 is continuously pressed downward. As the pressing block 32 of the upper pressing and positioning mechanism 30 is continuously pressed downward, the pressing block 32 first contacts the front end beam 52 and presses the front end beam 52 downward, so that the front end beam 52 compresses the elastic member 13 and moves downward as the top platform 11 moves downward. When the pressing block 32 contacts the bottom surfaces of the small main beam 51 and the front end beam 52 at the same time, the pressing block 32 stops pressing downward. At this time, the bottom surface of the small main beam 51 is flush with the bottom surface of the front end beam 52. Subsequently, the small main beam 51 and the front end beam 52 are assembled and spot welded to complete the assembly.

[0046] In addition, the present invention can adjust the elastic force of the elastic member 13 through the adjustable fastener 14 of the end elastic tightening mechanism 10, so that the combined device of the present invention can be applicable to many different types of front end beams.

[0047] like Figure 4 and Figure 5 As shown, Figure 4 The structure diagram of the front frame after being assembled by the combination device of the special vehicle front frame of the present invention is shown in FIG. Figure 5 for Figure 4 After the assembly device 100 of the front frame of the vehicle is assembled, the bottom surface of the front beam 52 of the front frame 50 is flush with the bottom surface of the small main beam 51. Further, after the front beam 52 and the small main beam 51 are welded, a traction plate 53 needs to be welded to the bottom surfaces of the two.

[0048] In addition, it should be noted that the height direction and the up-down direction mentioned above refer to the height direction of the assembly device of the special vehicle front frame.

[0049] The combination device of the special vehicle front frame of the present invention is provided with an end elastic tightening mechanism and an upper clamping and positioning mechanism, and the front end beam and the small main beam of the special vehicle front frame are conveyed with the bottom surface facing upward. Therefore, under the downward pressure of the upper clamping and positioning mechanism and the action of the elastic part of the end elastic tightening mechanism, the combination device can automatically adjust the height of the front end beam, so that the bottom surface of the front vehicle beam is automatically flush with the bottom surface of the small main beam without manual adjustment. Compared with the prior art, it saves labor costs and improves production efficiency.

[0050] The above are only preferred feasible embodiments of the present invention and are not intended to limit the protection scope of the present invention. All equivalent structural changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention.

Claims

1. A combination device of a front frame of a special vehicle, the front frame includes a front end beam and a small main beam, characterized in that: The assembly device of the special front frame comprises: An end elastic tightening mechanism is used to support the front end beam that has been delivered to the position and to adjust the height of the front end beam; An upper pressing and positioning mechanism is used to press the front end beam and contact the small main beam transported to the position by the conveying roller; When the front end beam and the small main beam are combined, the front end beam is positioned on the end elastic tightening mechanism with the bottom facing upward, and the small main beam is located above the conveying roller with the bottom facing upward. In the initial state, the bottom surface of the front end beam is higher than the bottom surface of the small main beam. When the upper clamping and positioning mechanism is working, the front end beam is first pressed down, and the front end beam compresses the elastic part of the end elastic tightening mechanism, and the height of the front end beam is reduced, so that the upper clamping and positioning mechanism can contact the bottom surface of the front end beam and the bottom surface of the small main beam at the same time; There are two end elastic tightening mechanisms, which are respectively located on both sides of the front end of the conveyor roller and are used to support the two ends of the front end beam; Each of the end elastic tightening mechanisms comprises a tightening platform, an elastic member accommodating mechanism and the elastic member, and the tightening platform is mounted on the base of the assembly device of the front frame of the special vehicle through a bottom plate; The jacking platform includes a support platform for supporting the front end beam and a first leg connected to the support platform; The elastic member accommodating mechanism has a cavity for accommodating the first leg and the elastic member, the cavity runs through the entire elastic member accommodating mechanism, and an adjustable fastener for locking the elastic member is provided at the tail end of the elastic member accommodating mechanism; The first leg can be inserted into the cavity and pass through the adjustable fastener, the first leg can move up and down relative to the cavity, and the height of the tightening platform can be adjusted by adjusting the adjustable fastener; The tightening platform further includes a second leg, and the end elastic tightening mechanism further includes a guide mechanism, the guide mechanism has a guide through hole, and the second leg is inserted into the guide through hole of the guide mechanism and can move up and down relative to the guide through hole; The upper clamping and positioning mechanism includes a cylinder and a pressure block connected to the cylinder, the pressure block can move up and down under the drive of the cylinder, and when the pressure block descends to a predetermined position, the pressure block can contact the front beam and the small main beam at the same time; The pressing block comprises a transverse portion and a vertical portion perpendicular to the transverse portion, wherein the transverse portion and the vertical portion form a T-shape, and when the pressing block is pressed downward, the transverse portion is located between the angle formed by the front end beam and the small main beam; There are two upper clamping and positioning mechanisms and two small main beams, and the two upper clamping and positioning mechanisms are respectively located near the connection between the two small main beams and the front end beam.

2. The assembly device of the special vehicle front frame according to claim 1, characterized in that: Limiting blocks are respectively arranged at the tail ends of the first supporting leg and the second supporting leg, and the limiting blocks are used to limit the upward movement distance of the tightening platform.

3. The assembly device of the special vehicle front frame according to claim 1, characterized in that: The combined device also includes a workpiece lifting mechanism, which is used to lower the front end beam delivered to the position onto the tightening platform; The end elastic jacking mechanism further comprises a positioning mechanism, and the positioning mechanism is used to position the front end beam at a predetermined position of the jacking platform.

4. The assembly device of the special vehicle front frame according to claim 1, characterized in that: The assembly device of the front frame of the special vehicle also includes a clamp for pressing the small main beam, and the clamp is arranged on the outer side of the conveying roller.

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