A dumper auxiliary frame assembly tool

Abstract

A self-unloading vehicle auxiliary frame assembly tool belongs to the technical field of automobile assembly and comprises a chassis assembly. The chassis assembly is provided with a support table. A plurality of stop portions are fixedly arranged on one side of the support table at intervals. A plurality of telescopic pressing mechanisms are fixedly arranged on the other side of the support table. The telescopic pressing mechanisms correspond to the stop portions one by one. A lifting sliding mechanism is arranged between the stop portions and the telescopic pressing mechanisms on the opposite side. An axis positioning mechanism for positioning the end rotating shaft of the self-unloading vehicle auxiliary frame is fixedly arranged at one end of the support table. The axis positioning mechanism can accurately position the end rotating shaft of the auxiliary frame and provide a positioning reference for subsequent assembly, so as to avoid assembly problems caused by inaccurate positioning of the rotating shaft. The cooperation of the stop portions and the telescopic pressing mechanisms can position and limit the auxiliary frame parts from both sides, so that the parts will not be deviated during the assembly process, the assembly accuracy is ensured, the product quality is improved, and the lifting sliding mechanism can lift and assist the sliding of the auxiliary frame.

Description

Technical Field

[0001] This utility model relates to the field of automotive assembly technology, and in particular to a tooling for assembling a subframe of a dump truck. Background Technology

[0002] The subframe of a dump truck is part of the cargo box, located below the cargo box floor and between the main frame and the cargo box. It is mainly used to install the hydraulic system and connect the cargo box and the main frame. During production, the subframe needs to be assembled, that is, the various components of the subframe are positioned and assembled, and then the various components are firmly combined together by welding, bolting and other methods.

[0003] Currently, a tooling for assembling the subframe of a concrete mixer truck has been developed (publication number CN214445702U), which includes a chassis assembly. The chassis assembly is equipped with multiple lifting assemblies for raising the subframe of the concrete mixer truck. The upper surface of the chassis assembly is equipped with a platform panel. One side of the platform panel is equipped with multiple longitudinal beam positioning block assemblies for positioning the transverse position of the longitudinal beams of the subframe of the concrete mixer truck, and the other side is equipped with multiple tensioning assemblies for pressing the longitudinal beams of the subframe of the concrete mixer truck. The end of the platform panel is equipped with a stop block assembly for positioning the longitudinal position of the longitudinal beams of the subframe of the concrete mixer truck. Through the cooperation of the longitudinal beam positioning block assembly, the tensioning assembly and the stop block assembly, the precise positioning and clamping of each component of the subframe can be achieved.

[0004] One end of the longitudinal beam of the dump truck subframe is equipped with a rotating shaft and a reinforcing crossbeam. It is connected to the truck bed through the rotating shaft. The aforementioned subframe assembly tooling cannot position the rotating shaft, which in turn affects the positioning accuracy between the rotating shaft and the longitudinal beam and the reinforcing crossbeam. Therefore, it is not suitable for the assembly of dump truck subframes. In addition, the flatness of the longitudinal beam positioning surface depends entirely on the processing and installation accuracy of the platform plate and the longitudinal beam positioning block assembly. The assembly tooling requires high processing accuracy; otherwise, it will affect the positioning accuracy of the various components of the subframe. Utility Model Content

[0005] To address the technical problem that existing subframe assembly tooling is not suitable for the subframe assembly requirements of dump trucks, this utility model provides a subframe assembly tooling for dump trucks.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a tooling for assembling a subframe of a dump truck, including a base frame assembly. The base frame assembly has a support platform. Several stops are fixedly arranged at intervals along the length of one side of the support platform, and several telescopic pressing mechanisms are fixedly arranged on the other side of the support platform. The telescopic pressing mechanisms correspond one-to-one with the stops. A lifting sliding mechanism is provided between the stops and the telescopic pressing mechanisms on the opposite side. A pivot positioning mechanism for positioning the rotating shaft at the end of the dump truck subframe is fixedly arranged at one end of the support platform. The pivot positioning mechanism can accurately position the rotating shaft at the end of the subframe, providing a positioning reference for subsequent assembly and avoiding assembly problems caused by inaccurate positioning of the rotating shaft. The cooperation between the stops and the telescopic pressing mechanism can position and limit the subframe components from both sides, ensuring that the components will not shift during the assembly process, ensuring assembly accuracy, and improving product quality. The lifting sliding mechanism can lift the subframe and assist its sliding, facilitating the movement of the subframe.

[0008] Preferably, the rotating shaft positioning mechanism includes an auxiliary positioning platform fixedly mounted on one side of the support platform. Two opposing rotating shaft positioning blocks are detachably mounted on the auxiliary positioning platform. The detachable mounting makes it easy to replace and maintain the rotating shaft positioning blocks. When encountering rotating shafts of different specifications, the positioning blocks can be quickly adjusted to adapt to diverse production needs, reduce tooling modification costs, and improve the versatility of the tooling.

[0009] Preferably, the rotating shaft positioning block has a positioning groove, which is V-shaped. The V-shaped positioning groove can automatically center the rotating shaft. No matter what the initial position of the rotating shaft is within a certain range, it can be positioned quickly and accurately, reducing manual adjustment time, improving positioning efficiency, and further ensuring assembly accuracy.

[0010] Preferably, the auxiliary positioning platform is provided with several mounting holes. The rotating shaft positioning block (7) includes a base and a V-block. The base is connected to the mounting hole by bolts, and the V-block is inserted into the base. The installation and disassembly are convenient and quick, and it is easy to replace different models of rotating shaft positioning blocks to meet the production needs of different products and improve the flexibility of tooling.

[0011] Preferably, a number of platform beams are fixedly provided at intervals along the length of the upper surface of the support platform. The platform beams extend along the width of the support platform. The stop is fixedly connected to the support platform and the platform beams. The telescopic clamping mechanism is fixedly installed on the upper surface of the platform beam away from the stop. The platform beams enhance the overall structural strength of the support platform, enabling it to withstand various pressures and impacts during the subframe assembly process, ensuring the stability and durability of the tooling. At the same time, it provides a reliable installation foundation for the stop and the telescopic clamping mechanism, ensuring that they do not shake during operation and function accurately.

[0012] Preferably, the upper surface of the platform crossbeam is detachably equipped with two positioning pads for supporting the two longitudinal beams respectively. The two positioning pads are located between the stop and the telescopic clamping mechanism. The positioning pads can be replaced according to the shape and size of the longitudinal beams of different models of subframes, providing precise support for the longitudinal beams, preventing problems such as sinking or shifting of the longitudinal beams during assembly, ensuring the installation accuracy of the longitudinal beams, improving the overall quality of the product, and ensuring that the upper surface of all positioning pads is in the same horizontal plane by replacing the positioning pads. This eliminates the limitation of the processing accuracy of the support platform and platform crossbeam, effectively ensuring the positioning accuracy of the subframe longitudinal beams and reducing the manufacturing difficulty of the tooling.

[0013] Preferably, a lifting sliding mechanism is provided on one side of each of the two positioning pads. The lifting sliding mechanism is hinged to the platform crossbeam. The two lifting sliding mechanisms are connected by a drive component. The hinged lifting sliding mechanism can flexibly adjust its height and angle to adapt to the assembly requirements of subframe components of different shapes and sizes. The connection through the drive component can realize the synchronous action of the two lifting sliding mechanisms, ensuring the consistency of operation, improving assembly efficiency, and reducing human operation errors.

[0014] Preferably, the lifting sliding mechanism includes a mounting frame hinged to the platform crossbeam. Rollers are rotatably mounted on the mounting frame. The rollers reduce the friction of the subframe components during movement, making the components move more smoothly, facilitating position adjustment, reducing the labor intensity of workers, and preventing excessive friction from scratching the surface of the subframe components, thus ensuring the appearance quality of the product.

[0015] Preferably, a positioning pad is detachably connected to the side surface of the stop that contacts the longitudinal beam of the subframe. The positioning pad can be replaced for different longitudinal beam specifications to ensure that the stop and the longitudinal beam fit tightly and are accurately positioned, preventing the longitudinal beam from moving laterally during assembly, improving assembly accuracy, ensuring product quality, and effectively reducing the requirements for the machining and installation accuracy of the stop, thus ensuring the positioning accuracy of the longitudinal beam of the subframe.

[0016] Preferably, the telescopic end of the telescopic clamping mechanism is fixedly installed with a pad. The pad can increase the contact area with the longitudinal beam of the subframe, disperse the clamping force, avoid indentation or damage to the surface of the longitudinal beam of the subframe during the clamping process, ensure the appearance quality of the product, and at the same time ensure the stability of the clamping, ensuring that the position of the components is fixed during assembly.

[0017] As can be seen from the above technical solutions, the advantages of this utility model are:

[0018] 1. One end of the support platform is fixedly equipped with a pivot positioning mechanism for positioning the pivot shaft at the end of the sub-frame of the dump truck. The pivot positioning mechanism can accurately position the pivot shaft at the end of the sub-frame, providing a positioning reference for subsequent assembly and avoiding assembly problems caused by inaccurate pivot positioning. The cooperation between the stop and the telescopic clamping mechanism can position and limit the sub-frame components from both sides, ensuring that the components will not shift during the assembly process, guaranteeing assembly accuracy, and improving product quality. The lifting and sliding mechanism can lift the sub-frame and assist its sliding, facilitating the movement of the sub-frame.

[0019] 2. Two positioning blocks can be detachably installed on the upper surface of the platform crossbeam to support the two longitudinal beams respectively. The two positioning blocks are located between the stop and the telescopic clamping mechanism. The positioning blocks can be replaced according to the shape and size of the longitudinal beams of different models of subframes, providing precise support for the longitudinal beams and preventing problems such as sinking or shifting during assembly. This ensures the installation accuracy of the longitudinal beams, improves the overall quality of the product, and ensures that the upper surface of all positioning blocks is in the same horizontal plane by replacing the positioning blocks. This eliminates the limitation of the processing accuracy of the support platform and platform crossbeam, effectively ensuring the positioning accuracy of the subframe longitudinal beams and reducing the manufacturing difficulty of the tooling.

[0020] 3. The side of the stop that contacts the longitudinal beam of the subframe is detachably connected to a positioning pad. The positioning pad can be replaced for different longitudinal beam specifications to ensure that the stop fits tightly with the longitudinal beam and is accurately positioned. This prevents the longitudinal beam from moving laterally during assembly, improves assembly accuracy, ensures product quality, and effectively reduces the requirements for the machining and installation accuracy of the stop, thus ensuring the positioning accuracy of the longitudinal beam of the subframe.

[0021] 4. The rotating shaft positioning block is provided with a positioning groove. The positioning groove is V-shaped. The V-shaped positioning groove can automatically center the rotating shaft. No matter what the initial position of the rotating shaft is within a certain range, it can be positioned quickly and accurately, reducing manual adjustment time, improving positioning efficiency, and further ensuring assembly accuracy. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural schematic diagram of the tooling for the subframe assembly of a dump truck according to one or more embodiments of the present invention;

[0024] Figure 2This is a schematic diagram showing the usage status of the tooling of the dump truck subframe assembly according to one or more embodiments of the present invention.

[0025] The components represented by the various reference numerals in the diagram are:

[0026] 1. Outriggers; 2. Support platform; 3. Platform beam; 4. Stop; 5. Telescopic clamping mechanism; 6. Auxiliary positioning platform; 7. Rotary shaft positioning block; 8. Connecting rod; 9. Positioning groove; 10. Lifting sliding mechanism; 11. Positioning pad; 12. Rotating shaft; 13. Mounting bracket; 14. Pin; 15. Roller; 16. Pad. Detailed Implementation

[0027] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] In a typical embodiment of this utility model, such as Figures 1-2 As shown, a tooling for assembling a subframe of a dump truck is proposed, including: a chassis assembly, stops 4, telescopic clamping mechanisms 5, a pivot positioning mechanism, and a lifting sliding mechanism 10. The chassis assembly includes a support platform 2, with the pivot positioning mechanism fixedly mounted at one end of the support platform 2. Several stops 4 and telescopic clamping mechanisms 5 are provided, with the number of stops 4 and telescopic clamping mechanisms 5 being the same and corresponding one-to-one. Several stops 4 are fixedly and spaced along the length of the support platform 2 on one side, and several telescopic clamping mechanisms 5 are fixedly and spaced along the length of the support platform 2 on the other side. The stops 4 and telescopic clamping mechanisms... 5 are arranged in a relative manner. The stop 4 is used to position the longitudinal beam of the subframe. The telescopic clamping mechanism 5 is used to cooperate with the stop 4 to clamp the subframe, which facilitates subsequent welding. The rotating shaft positioning mechanism is used to position the rotating shaft 12 at the end of the subframe of the dump truck, thereby assisting in the positioning between the rotating shaft 12 and the longitudinal beam and the reinforcing crossbeam. At the same time, the positioning of the rotating shaft 12 can also realize the positioning of the end of the longitudinal beam of the subframe. The lifting sliding mechanism 10 is movably installed on the support platform 2 to lift the subframe and make the subframe slide. There are two lifting sliding mechanisms 10 between each stop 4 and its corresponding telescopic clamping mechanism 5.

[0029] The underframe assembly includes a support platform 2 and several legs 1. The legs 1 are fixedly installed at the bottom of the support platform 2. Several platform beams 3 are fixedly installed at intervals along the length of the upper surface of the support platform 2. The platform beams 3 extend along the width of the support platform 2. The platform beams 3 are used for the installation of various functional mechanisms, which reduces the structural complexity of the support platform 2, facilitates manufacturing, and the subframe is no longer placed directly on the platform of the support platform 2, which facilitates the welding of the subframe.

[0030] The stop 4 is a column structure. In this embodiment, the stop 4 is made of channel steel. The stop 4 is vertically fixed on one side of the support platform 2 by welding or bolting. The stop 4 is fixedly connected to the support platform 2 and the platform beam 3 to improve the installation firmness and stability of the stop 4. The telescopic clamping mechanism 5 is fixedly installed on the upper surface of the platform beam 2 away from the stop 4. The telescopic clamping mechanism 5 is a telescopic structure such as a pneumatic telescopic cylinder or a hydraulic telescopic cylinder to cooperate with the stop 4 to clamp the subframe.

[0031] The telescopic clamping mechanism 5 has a pad 16 fixedly installed at its telescopic end. The pad 16 is used to increase the contact area with the subframe, reduce stress concentration, and effectively avoid damage to the subframe during the clamping process of the telescopic clamping mechanism 5.

[0032] Two positioning pads 11 are detachably installed on the upper surface of the platform crossbeam 2. The two positioning pads 11 are connected to the threaded holes on the platform crossbeam 2 by bolts. The two positioning pads 11 are spaced apart along the length of the platform crossbeam 2 to support the two longitudinal beams of the subframe respectively. The two positioning pads 11 on the platform crossbeam 2 are located between the stop 4 and the telescopic clamping mechanism 5. The setting of the positioning pads 11 can ensure that the upper surface of all positioning pads 11 is in the same horizontal plane by replacing the positioning pads 11. It is no longer limited by the processing accuracy of the support platform 2 and the platform crossbeam 3, effectively ensuring the positioning accuracy of the subframe longitudinal beams and reducing the manufacturing difficulty of the tooling.

[0033] The stop 4 is bolted to one side of the subframe longitudinal beam and is detachably connected to a positioning pad 11. The stop 4 contacts the subframe longitudinal beam through the positioning pad 11 to position the subframe longitudinal beam. The positioning pad 11 effectively reduces the requirements for the machining and installation accuracy of the stop 4 and ensures the positioning accuracy of the subframe longitudinal beam.

[0034] The support platform 2 has slots for the installation of the lifting sliding mechanism 10, so as to avoid obstructing the movement of the lifting sliding mechanism 10. Two lifting sliding mechanisms 10 are hinged to one side of each platform beam 3. The two lifting sliding mechanisms 10 are spaced apart along the length of the platform beam 3. The distance between the two lifting sliding mechanisms 10 is the same as the distance between the two positioning pads 11 on the platform beam 3. That is, a lifting sliding mechanism 10 is provided on one side of each of the two positioning pads 11 on the platform beam 3, so as to support and lift the bottom of the subframe longitudinal beam using the lifting sliding mechanism 10.

[0035] Specifically, the lifting sliding mechanism 10 includes a mounting frame 13, a pin 14, and rollers 15. One end of the mounting frame 13 is hinged to the platform crossbeam 3 via the pin 14. The rollers 15 are rotatably mounted on the mounting frame 13 and are used to contact the bottom of the subframe longitudinal beam. Two adjacent lifting sliding mechanisms 10 are connected by a drive assembly, so that the drive assembly can drive the movement of the two adjacent lifting sliding mechanisms 10. In this embodiment, the specific structure of the drive assembly is the same as that of the prior art (publication number CN214445702U), specifically including a lifting cylinder hinged to the bottom of the support platform 2. The telescopic end of the lifting cylinder is rotatably connected to the swing arm via a connecting shaft. The swing arm is fixedly connected to the mounting frames 13 on both sides via a rotating shaft. Under the action of the swing arm and the rotating shaft, the lifting cylinder can synchronously drive the two mounting frames 13 to swing around the axis, thereby synchronously changing the height of the two rollers 15.

[0036] It is understood that in other embodiments, a lifting cylinder may also be provided at the bottom of each lifting sliding mechanism 10, and the lifting cylinder may be used to drive the mounting frame 13 to move. The specific setting method can be selected according to actual needs, and no further restrictions are imposed here.

[0037] The rotating shaft positioning mechanism includes an auxiliary positioning platform 6 and a rotating shaft positioning block 7. The auxiliary positioning platform 6 is fixedly installed on one side of the support platform 2 by welding, and the bottom of the auxiliary positioning platform 6 is fixedly connected to the support platform 2 by a connecting rod 8 to improve the installation firmness and stability of the auxiliary positioning platform 6. There are two rotating shaft positioning blocks 7, which are installed opposite to each other on the auxiliary positioning platform 6. The rotating shaft positioning blocks 7 are provided with positioning grooves 9, which are V-shaped, to facilitate the placement and positioning of the rotating shaft 12.

[0038] The auxiliary positioning platform 6 is provided with several mounting holes for bolt installation. The rotating shaft positioning block 7 is fixedly installed on the auxiliary positioning platform 6 by bolts. The position of the rotating shaft positioning block 7 can be adjusted according to the needs to adapt to the positioning requirements of the rotating shaft 12 of the subframe of different specifications of dump trucks. Moreover, the levelness of the rotating shaft 12 is no longer affected by the machining accuracy of the support platform 2. It can be adjusted as needed by replacing the rotating shaft positioning block 7, which effectively reduces the manufacturing difficulty of the tooling.

[0039] Specifically, the rotating shaft positioning block 7 includes a base and a V-block, and a positioning groove 9 is set on the V-block. The base is fixedly installed on the auxiliary positioning platform 6 by bolts. The base is provided with several limiting holes. The V-block is connected to the limiting holes by a pin to realize the quick insertion and removal replacement of the V-block.

[0040] The specific working principle is as follows: Figure 2 As shown, first connect the two longitudinal beams to the rotating shaft 12, then place the rotating shaft 12 horizontally between the two rotating shaft positioning blocks 7 as an adjustment reference. At the same time, place the two longitudinal beams on the positioning pads 11 on the platform crossbeam 3 respectively. Place the reinforcing crossbeam and other crossbeams between the two longitudinal beams according to the set spacing. Extend and press the telescopic clamping mechanism 5, and weld the assembled components. After welding, the telescopic clamping mechanism 5 is reset, and the lifting sliding mechanism 10 lifts the subframe and pushes the subframe to slide off the support platform 2.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tooling for assembling a subframe of a dump truck, comprising: The underframe assembly is provided with a support platform (2). The support platform (2) is characterized in that a number of stops (4) are fixedly provided at intervals along its length on one side, and a number of telescopic pressing mechanisms (5) are fixedly provided on the other side of the support platform (2). The telescopic pressing mechanism (5) corresponds to the stops (4) one by one. A lifting sliding mechanism (10) is provided between the stops (4) and the telescopic pressing mechanism (5) on the opposite side. A rotating shaft positioning mechanism for positioning the rotating shaft (12) at the end of the subframe of the dump truck is fixedly provided at one end of the support platform (2).

2. The tooling for assembling the subframe of the dump truck according to claim 1, characterized in that, The rotating shaft positioning mechanism includes an auxiliary positioning platform (6) fixedly installed on one side of the support platform (2), and two opposing rotating shaft positioning blocks (7) are detachably installed on the auxiliary positioning platform (6).

3. The tooling for assembling the subframe of the dump truck according to claim 2, characterized in that, The rotating shaft positioning block (7) has a positioning groove (9) which is V-shaped.

4. The tooling for assembling the subframe of the dump truck according to claim 2, characterized in that, The auxiliary positioning platform (6) is provided with several mounting holes. The rotating shaft positioning block (7) includes a base and a V-block. The base is connected to the mounting holes by bolts, and the V-block is inserted into the base.

5. The tooling for assembling the subframe of a dump truck according to claim 1, characterized in that, The upper surface of the support platform (2) is fixedly provided with several platform beams (3) at intervals along its length direction. The platform beams (3) extend along the width direction of the support platform (2). The stop (4) is fixedly connected to the support platform (2) and the platform beams (3). The telescopic pressing mechanism (5) is fixedly installed on the upper surface of the platform beam (3) away from the stop (4).

6. The tooling for assembling the subframe of the dump truck according to claim 5, characterized in that, The upper surface of the platform beam (3) can be detachably installed with two positioning pads (11) for supporting the two longitudinal beams respectively. The two positioning pads (11) are located between the stop (4) and the telescopic pressing mechanism (5).

7. The tooling for assembling the subframe of a dump truck according to claim 6, characterized in that, Each of the two positioning pads (11) is provided with a lifting sliding mechanism (10) on one side. The lifting sliding mechanism (10) is hinged to the platform beam (3), and the two lifting sliding mechanisms (10) are connected by a drive assembly.

8. The tooling for assembling the subframe of the dump truck according to claim 7, characterized in that, The lifting sliding mechanism (10) includes a mounting frame (13) hinged to the platform beam (3), on which rollers (15) are rotatably mounted.

9. The tooling for assembling the subframe of a dump truck according to claim 1, characterized in that, The stop (4) has a positioning pad (11) detachably connected to the side surface that is in contact with the longitudinal beam of the subframe.

10. The tooling for assembling the subframe of a dump truck according to claim 1, characterized in that, A pad (16) is fixedly installed at the telescopic end of the telescopic pressing mechanism (5).

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