A stringer roll-over device

Abstract

The utility model provides a kind of stringer rollover device, it is related to vehicle production equipment technical field, to solve the problem of inconvenient workpiece overturning of machining device in prior art, the stringer rollover device includes first rollover unit and second rollover unit, the first rollover unit and second rollover unit are respectively connected at the both ends of stringer and can drive the both ends of stringer same angle rotation, the first rollover unit and second rollover unit all include base, transmission power box, drive assembly and fixture support, the transmission power box is installed on the base, the drive assembly is connected on the transmission power box and its power output end is connected with the fixture support, the fixture support is located at the side of the transmission power box and is used to fixedly connect the end of stringer.The stringer rollover device of the utility model is compared with the mode of traditional hoisting overturning, and overturning efficiency is higher, and safer and more reliable.

Description

Technical Field

[0001] This utility model relates to the field of vehicle production equipment technology, and in particular to a longitudinal beam rolling device. Background Technology

[0002] The longitudinal beams of a heavy-duty truck frame are a major component, and their quality has a significant impact on the frame and the overall vehicle quality. As the largest component of the frame, the longitudinal beams bear various impact loads and complex torques during truck operation; therefore, their strength is of paramount importance.

[0003] The cross-sectional dimensions of the load-bearing longitudinal beams for heavy trucks are 8000mm~12000mm × 450mm × 130mm, with steel plate wall thicknesses ranging from 12mm to 20mm. Before assembly, they are slender and have poor stiffness. Only after machining and assembly of multiple components do they acquire load-bearing stiffness and strength. Individual longitudinal beams and assemblies are as follows... Figure 1 and Figure 2 As shown.

[0004] The original processing equipment was a fixed-workpiece type that did not automatically rotate, as follows: Figure 3 As shown, the processing of workpiece 011 requires adjusting it to be in a flat or upright position and clamped on the central worktable 001 to process different surfaces. When adjusting the workpiece's state, it is necessary to hoist, transfer, and flip the workpiece, which can easily lead to safety accidents. There are many operators, the flipping efficiency is low, and the area for workpiece transfer and flipping is large. Utility Model Content

[0005] The purpose of this utility model is to provide a longitudinal beam rolling device to solve the problem of inconvenience in workpiece flipping in the existing processing device. Compared with the traditional method of flipping by hoisting, the longitudinal beam rolling device of this utility model has higher flipping efficiency and is safer and more reliable.

[0006] This utility model provides a longitudinal beam rolling device, including a first rolling unit and a second rolling unit. The first rolling unit and the second rolling unit are respectively connected to the two ends of the longitudinal beam and can drive the two ends of the longitudinal beam to rotate at the same angle. The first rolling unit and the second rolling unit each include a base, a transmission power box, a drive component and a clamp bracket. The transmission power box is installed on the base, the drive component is connected to the transmission power box and its power output end is connected to the clamp bracket, and the clamp bracket is located on one side of the transmission power box and is used to fix the ends of the longitudinal beam.

[0007] As a preferred embodiment of the present invention, the drive assembly includes a drive motor, a gear pair assembly and a main shaft. The drive motor is mounted on one side of the transmission power box and its output shaft is connected to one end of the gear pair assembly. The other end of the gear pair assembly is connected to the main shaft. The main shaft extends out of the other end of the transmission power box and is connected to the clamp bracket.

[0008] As a preferred embodiment of this utility model, a mounting block is provided at the output end of the spindle, and the mounting block is connected to the clamp bracket by a plurality of bolts.

[0009] As a preferred embodiment of this utility model, a limiting bracket is provided on one side of the top of the transmission power box, and the limiting bracket extends to the upper side of the clamp bracket.

[0010] As a preferred embodiment of this utility model, a limiting pin is provided on the side of the transmission power box near the fixture bracket. The limiting pin is located on the lower side of the main shaft. A positioning hole is provided on the fixture bracket. The limiting pin can extend out of the transmission power box and be inserted into the positioning hole.

[0011] As a preferred embodiment of this utility model, a first pull rod is provided inside the main shaft. The first pull rod is coaxially arranged with the main shaft. The output end of the first pull rod extends out of the main shaft and is provided with a limiting part at its output end. The limiting part is connected to the clamp bracket.

[0012] As a preferred embodiment of this utility model, a second tie rod is provided inside the main shaft. The second tie rod is coaxially arranged with the main shaft. The output end of the second tie rod extends out of the main shaft and is connected to a universal joint for connecting with the workpiece. The input section of the second tie rod is connected to a tensioning cylinder.

[0013] As a preferred embodiment of this utility model, a plurality of threaded holes are provided on the top of the base, and the plurality of threaded holes are arranged along the length direction of the base. A connecting hole corresponding to the threaded holes is provided on the bottom of the transmission power box, and the transmission power box is connected to the threaded holes by a connector passing through the connecting hole and the threaded hole.

[0014] As a preferred embodiment of this utility model, a transmission screw and a screw motor are provided on the upper side of the base, the output end of the screw motor is connected to the transmission screw, and the bottom of the transmission power box is connected to the transmission screw.

[0015] As a preferred embodiment of this utility model, a ground rail is provided below the base, and the bottom of the ground rail is fixedly connected to the foundation through multiple adjustable pads. A guide keyway is provided on the upper side of the ground rail, and the base is adjustablely installed on the guide keyway.

[0016] Compared with the prior art, the present invention has the following positive effects: The longitudinal beam rolling device provided by this utility model includes a first rolling unit and a second rolling unit. The first and second rolling units are respectively connected to both ends of the longitudinal beam and can drive both ends of the longitudinal beam to rotate at the same angle. Each of the first and second rolling units includes a base, a transmission power box, a drive assembly, and a clamp bracket. The transmission power box is mounted on the base, and the drive assembly is connected to the transmission power box, with its power output end connected to the clamp bracket. The clamp bracket is located on one side of the transmission power box and is used to fix the ends of the longitudinal beam. This longitudinal beam rolling device connects and fixes the longitudinal beam by setting the first and second rolling units at both ends of the longitudinal beam. The first and second rolling units are coupled and synchronously controlled in terms of rotation angle, with each power drive implemented independently, facilitating coupling matching and adjustment of the initial angle. When the drive assembly drives the clamp bracket to rotate, it can achieve simultaneous rotation of both ends of the longitudinal beam. Compared with the traditional method of rotation by hoisting, this method has higher rotation efficiency and is safer and more reliable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a structural schematic diagram of a single longitudinal beam; Figure 2 This is a structural schematic diagram of the longitudinal beam assembly; Figure 3 A schematic diagram of the structure of a workpiece processed by traditional machining equipment; Figure 4 This is a schematic diagram of the first tumbling unit of this utility model loading and unloading the workpiece at 0° horizontally. Figure 5 This is a schematic diagram of the first tumbling unit of this utility model when the workpiece is upright at 90°. Figure 6 This is a front view of the first tumbling unit of this utility model when loading and unloading the workpiece at 0° horizontally; Figure 7This is a right view of the first tumbling unit of this utility model when loading and unloading the workpiece at 0° horizontally. Figure 8 This is a schematic diagram of the internal structure of the first tumbling unit of this utility model when loading and unloading the workpiece at 0° horizontally. Figure 9 This is a schematic diagram of the second tumbling unit of this utility model when loading and unloading the workpiece at 0° horizontally. Figure 10 This is a schematic diagram of the second tumbling unit of this utility model when the workpiece is upright at 90°. Figure 11 This is a schematic diagram of the internal structure of the second tumbling unit of this utility model when loading and unloading the workpiece at 0° horizontally. Figure 12 This is a right view of the second tumbling unit of this utility model when loading and unloading the workpiece at 0° horizontally.

[0019] In the diagram: 1. Base; 2. Transmission power box; 21. Threaded hole; 22. Connecting seat; 3. Drive assembly; 31. Drive motor; 32. Gear pair assembly; 33. Main shaft; 331. Mounting block; 34. First tie rod; 341. Limiting part; 35. Second tie rod; 36. Tensioning cylinder; 37. Universal joint; 4. Fixture bracket; 5. Ground rail; 51. Guide keyway; 6. Adjustable pad; 7. Limiting bracket; 8. Limiting pin; 9. Lead screw motor; 91. Transmission lead screw; 100. First tumbling unit; 110. Second tumbling unit. Detailed Implementation

[0020] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0023] This embodiment provides a longitudinal beam rolling device, such as Figures 1-12 As shown, it includes a first tumbling unit 100 and a second tumbling unit 110. The first tumbling unit 100 and the second tumbling unit 110 are respectively connected to the two ends of the longitudinal beam and can drive the two ends of the longitudinal beam to rotate at the same angle.

[0024] Both the first tumbling unit 100 and the second tumbling unit 110 include a base 1, a transmission power box 2, a drive assembly 3, and a clamp bracket 4. The transmission power box 2 is mounted on the base 1, and the base 1 supports and fixes the transmission power box 2. The clamp bracket 4 of the first tumbling unit 100 and the clamp bracket 4 of the second tumbling unit 110 are arranged opposite to each other. The drive assembly 3 is connected to the transmission power box 2, and its power output end is connected to the clamp bracket 4. The transmission power box 2 is used to protect and support the drive assembly 3. The clamp bracket 4 is located on one side of the transmission power box 2 and is used to fix the end of the longitudinal beam. The clamp bracket 4 has a fixing part for mounting and fixing the longitudinal beam. This fixing part only needs to be able to connect the longitudinal beam to the clamp bracket 4. Different fixing parts can be set according to different longitudinal beam shapes. The fixing part can fix the longitudinal beam by snap-fit ​​or other methods.

[0025] The longitudinal beam rolling device in this embodiment connects and fixes the longitudinal beam by setting a first rolling unit 100 and a second rolling unit 110 at both ends of the longitudinal beam. The first rolling unit 100 and the second rolling unit 110 are coupled and synchronously controlled in terms of the rolling angle, while the power drive is implemented independently, which facilitates coupling matching and adjustment of the initial angle. When the drive assembly 3 drives the clamp bracket 4 to rotate, both ends of the longitudinal beam can rotate at the same angle. Compared with the traditional method of rolling by hoisting, the rolling efficiency is higher and it is safer and more reliable.

[0026] In one preferred embodiment, the drive assembly 3 includes a drive motor 31, a gear pair assembly 32, and a main shaft 33. The drive motor 31 is mounted on one side of the transmission power box 2, and its output shaft is connected to one end of the gear pair assembly 32. The other end of the gear pair assembly 32 is connected to the main shaft 33. The main shaft 33 extends out of the other end of the transmission power box 2 and is connected to the clamp bracket 4. Preferably, an angle detector is provided on the main shaft 33.

[0027] In this embodiment, the drive motor 31 transmits rotational torque to the spindle 33 through the gear pair assembly 32, achieving a roll angle of ±110°, a minimum set rotation angle of 0.001°, a roll speed of 3 revolutions per minute, and an indexing accuracy of no more than 10″. The roll acceleration and deceleration curve can be set to linear or bell-shaped mode to reduce the impact of rotation start and stop. If the workpiece is a standard square workpiece (such as a longitudinal beam), it can be machined on all four sides by simply rotating it 90°.

[0028] In a preferred embodiment, a mounting block 331 is provided at the output end of the spindle 33. The mounting block 331 can be a disc-shaped structure with a diameter larger than that of the spindle 33. The spindle 33 and the mounting block 331 are integrally formed, providing a strong and stable connection. The mounting block 331 is connected to the clamp bracket 4 by multiple bolts. Specifically, eight connecting holes are evenly arranged around the mounting block, and it is connected to the clamp bracket 4 by eight bolts. After the clamp bracket 4 is positioned on the mounting block, eight M20 screws and locating pins on the flange are tightened.

[0029] In a preferred embodiment, a limit bracket 7 is provided on one side of the top of the transmission power box 2, extending to the upper side of the fixture bracket 4. The limit bracket 103 can adjust the limit angle of the workpiece's allowable rollover, serving as a mechanical limiting device and an effective means of ensuring mechanical safety.

[0030] In a preferred embodiment, a limiting pin 8 is provided on the side of the transmission power box 2 near the fixture bracket 4. The limiting pin 8 is located on the lower side of the main shaft 33. A positioning hole is provided on the fixture bracket 4, and the limiting pin 8 can extend out of the transmission power box 2 and be inserted into the positioning hole.

[0031] The aforementioned limit pin 8 can be an intelligent hydraulic pin, serving as a precise roll angle positioning mechanism, capable of detecting stroke completion and pressure. The standard φ50mmx90° zero-point tapered pin module design has strong shear resistance and stable repeatability. Combined with the detected changes in the pin's in-and-out load, it intelligently manages and prompts the difference between the pre-roll angle and the theoretical angle, thus delaying the wear of the zero-point positioning mechanism.

[0032] In this embodiment, the limiting bracket 103 and the limiting pin 8 are used to limit and protect the large workpiece, ensuring the accuracy and safety of the rolling.

[0033] As a preferred embodiment, such as Figure 8As shown, a first pull rod 34 is provided inside the main spindle 33. The first pull rod 34 is coaxially arranged with the main spindle 33, and its output end extends out of the main spindle 33 and has a limiting part 341. The limiting part 341 is connected to the fixture bracket 4. The limiting part 341 and the fixture bracket 4 can be connected by a pin. The first pull rod 34 can further strengthen the connection between itself and the fixture bracket 4, making the rotation of the fixture bracket 4 more stable.

[0034] As a preferred embodiment, such as Figure 11 As shown, a second tie rod 35 is provided inside the main spindle 33. The second tie rod 35 is coaxially arranged with the main spindle 33. The output end of the second tie rod 35 extends out of the main spindle 33 and is connected to a universal joint 37 for connecting with the workpiece. The input section of the second tie rod 35 is connected to the tensioning cylinder 36.

[0035] In this embodiment, the tensioning cylinder 36 is connected to the universal joint 37 on the fixture bracket 4 via the second pull rod 35 at the center of the main shaft. The universal joint 37 is then connected to the workpiece. The tensioning cylinder 36 has a stroke of 200mm. When installing the workpiece, the tensioning cylinder is depressurized, and the plug-in universal joint 37 is manually pulled to connect to the workpiece. After checking the installation status at each location, the tensioning cylinder is activated. The piston pulling force (pressure adjustable) of the tensioning cylinder increases the tension of the longitudinal beam, thereby improving its rigidity.

[0036] As a preferred embodiment, such as Figure 4 As shown, multiple sets of threaded holes 21 are provided on the top of the base 1, arranged along the length of the base 1. Each set of threaded holes has four holes in the width direction of the base 1. The bottom of the transmission power box 2 has connecting holes corresponding to the threaded holes 21. The transmission power box 2 is connected to the threaded holes 21 by a connector passing through the connecting hole and the threaded hole 21. The connector can be a bolt, which is convenient for connection. The distance between two adjacent sets of threaded holes is 180mm, and the maximum distance that can be manually adjusted is 1080mm.

[0037] In this embodiment, multiple sets of threaded holes 21 are arranged along the length of the base 1, so that the transmission power box 2 and the fixture bracket 4 can move along the transmission power box 2 to match different workpiece fixtures and make full use of the effective stroke.

[0038] In a preferred embodiment, a lead screw 91 and a lead screw motor 9 are provided on the upper side of the base 1. The output end of the lead screw motor 9 is connected to the lead screw 91, and the bottom of the power transmission box 2 is connected to the lead screw 91. Specifically, the bottom of the power transmission box 2 is connected to the lead screw 91 via a connecting seat 22 provided on the lead screw 91.

[0039] The base 1 is a supporting component for the transmission power box 2. A CNC linear motion U-axis is set between the two, driven by the lead screw motor 9 and the T-type self-locking lead screw pair. The effective stroke of the CNC program is 1000mm, which facilitates workpiece docking and adjustment and automatically releases the workpiece.

[0040] In a preferred embodiment, a ground rail 5 is provided below the base 1. The bottom of the ground rail 5 is fixedly connected to the foundation through multiple adjustable pads 6. A guide keyway 51 is provided on the upper side of the ground rail 5, and the base 1 can be adjusted and installed on the guide keyway 51.

[0041] The guide keyway 51 can be used to adjust the position of the base 1 in the length direction of the workpiece. The manually adjustable distance is no more than 6000mm, which can match the length of different workpieces and fixtures of 5 to 12 meters and make full use of the 12-meter CNC programming effective stroke.

[0042] In a preferred embodiment, the base 1 is directly fixed to the foundation via multiple adjustable shims 6. Five sets of adjustable shims 6 can be installed on the base 1, with two shims arranged in each set along the width direction. After the equipment is positioned and adjusted, secondary grouting is performed between the adjustable shims 6 and the foundation to ensure reliable connection.

[0043] Specifically, in this embodiment, the first tumbling unit 100 and the second tumbling unit 110 both include a base 1, a transmission power box 2, a drive assembly 3, a clamp bracket 4, a limit bracket 7, and a limit pin 8.

[0044] like Figures 4-8 As shown, a first pull rod 34 is provided inside the main shaft 33 of the first tumbling unit 100. The output end of the first pull rod 34 extends out of the main shaft 33 and is provided with a limiting part 341 at its output end. The limiting part 341 is connected to the clamp bracket 4. Multiple sets of threaded holes 21 are provided on the top of the base 1 of the first tumbling unit 100, and the multiple sets of threaded holes 21 are arranged along the length direction of the base 1. The bottom of the base 1 of the first tumbling unit 100 is directly fixed to the foundation through multiple adjustable pads 6.

[0045] like Figures 9-12 As shown, a second tie rod 35 is installed inside the main shaft 33 of the second tumbling unit 110. The output end of the second tie rod 35 extends out of the main shaft 33 and is connected to a universal joint 37 for connecting with the workpiece. The input section of the second tie rod 35 is connected to the tensioning cylinder 36. A transmission screw 91 and a screw motor 9 are installed on the upper side of the base 1 of the second tumbling unit 110. The output end of the screw motor 9 is connected to the transmission screw 91, and the bottom of the transmission power box 2 is connected to the transmission screw 91. A ground rail 5 is installed below the base 1 of the second tumbling unit 110. The bottom of the ground rail 5 is fixedly connected to the foundation through multiple adjustable shims 6. A guide keyway 51 is provided on the upper side of the ground rail 5, and the base 1 is adjustablely mounted on the guide keyway 51.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any modifications and improvements made by those skilled in the art without departing from the inventive concept of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A longitudinal beam rolling device, characterized in that, The system includes a first tumbling unit (100) and a second tumbling unit (110). The first tumbling unit (100) and the second tumbling unit (110) are respectively connected to the two ends of the longitudinal beam and can drive the two ends of the longitudinal beam to rotate at the same angle. The first tumbling unit (100) and the second tumbling unit (110) each include a base (1), a transmission power box (2), a drive assembly (3) and a clamp bracket (4). The transmission power box (2) is installed on the base (1). The drive assembly (3) is connected to the transmission power box (2) and its power output end is connected to the clamp bracket (4). The clamp bracket (4) is located on one side of the transmission power box (2) and is used to fix the end of the longitudinal beam.

2. The longitudinal beam rolling device according to claim 1, characterized in that, The drive assembly (3) includes a drive motor (31), a gear pair assembly (32) and a main shaft (33). The drive motor (31) is mounted on one side of the transmission power box (2) and its output shaft is connected to one end of the gear pair assembly (32). The other end of the gear pair assembly (32) is connected to the main shaft (33). The main shaft (33) extends out of the other end of the transmission power box (2) and is connected to the clamp bracket (4).

3. The longitudinal beam rolling device according to claim 2, characterized in that, A mounting block (331) is provided at the output end of the spindle (33), and the mounting block (331) is connected to the clamp bracket (4) by a plurality of bolts.

4. The longitudinal beam rolling device according to claim 1, characterized in that, A limiting bracket (7) is provided on one side of the top of the transmission power box (2), and the limiting bracket (7) extends to the upper side of the clamp bracket (4).

5. The longitudinal beam rolling device according to claim 1, characterized in that, A limiting pin (8) is provided on the side of the transmission power box (2) near the fixture bracket (4). The limiting pin (8) is located on the lower side of the main shaft (33). A positioning hole is provided on the fixture bracket (4). The limiting pin (8) can extend out of the transmission power box (2) and be inserted into the positioning hole.

6. The longitudinal beam rolling device according to claim 2, characterized in that, A first pull rod (34) is provided inside the main shaft (33). The first pull rod (34) is coaxially arranged with the main shaft (33). The output end of the first pull rod (34) extends out of the main shaft (33) and a limiting part (341) is provided at its output end. The limiting part (341) is connected to the clamp bracket (4).

7. A longitudinal beam rolling device according to claim 2, characterized in that, A second pull rod (35) is provided inside the main shaft (33). The second pull rod (35) is coaxially arranged with the main shaft (33). The output end of the second pull rod (35) extends out of the main shaft (33) and is connected to a universal joint (37) for connecting with the workpiece. The input section of the second pull rod (35) is connected to the tensioning cylinder (36).

8. The longitudinal beam rolling device according to claim 1, characterized in that, Multiple sets of threaded holes (21) are provided on the top of the base (1), and the multiple sets of threaded holes (21) are arranged along the length direction of the base (1). The bottom of the transmission power box (2) is provided with a connection hole corresponding to the threaded hole (21). The transmission power box (2) is connected by a connector passing through the connection hole and the threaded hole (21).

9. A longitudinal beam rolling device according to claim 1, characterized in that, A transmission screw (91) and a screw motor (9) are provided on the upper side of the base (1). The output end of the screw motor (9) is connected to the transmission screw (91), and the bottom of the transmission power box (2) is connected to the transmission screw (91).

10. A longitudinal beam rolling device according to claim 1, characterized in that, A ground rail (5) is provided below the base (1). The bottom of the ground rail (5) is fixedly connected to the foundation through multiple adjustable pads (6). A guide keyway (51) is provided on the upper side of the ground rail (5). The base (1) can be adjusted and installed on the guide keyway (51).

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