A spinning device

Abstract

The invention provides a spinning device, comprising a vertical frame, a conveyor line, a lifting mechanism, a tightening mechanism, a mounting plate, a capping cylinder, a capping disk and a driving motor; the mounting plate, the tightening mechanism and the conveyor line for containers to be spin-formed and packaged are arranged in sequence from the upper end to the lower end of the vertical frame, the tightening mechanism is installed on the lifting mechanism, the capping cylinder and the driving motor are both fixed on the mounting plate, and the capping disk is fixed on the output end of the capping cylinder, the structure is simple, the space occupied is small, and the manufacturing cost is low; and the four capping disks simultaneously clamp and tighten the bottle caps inwardly, have strong tolerance for the errors of the bottle caps themselves, cause little damage to the bottle caps, and can also correct the position of the bottle caps; the tightening cylinder is a multi-stroke cylinder, so that the spinning device can be compatible with the capping function of bottle caps with more than two diameters, the driving motor does not need to operate intermittently, the capping power is continuous, the transmission of the output force is continuous and stable, the capping efficiency is high, and the reliability and accuracy of the spinning device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of liquid filling, and in particular to a spinning device. Background Art

[0002] Different liquid packaging barrels in different places of use require different shapes, and the barrel covers are set in a variety of ways. The barrel covers are generally pressed by spinning. Spinning has the unique advantages of easily achieving lightweight, flexible and efficient products, so it is given special attention in the processing of many parts.

[0003] The utility model patent with application number 201020555962.0 provides a linear multi-head capping device, including a height-adjustable lifting mechanism, a control system, a capping mechanism with a torque limiting device, a product conveying and positioning system and other main working systems. The lifting mechanism is connected to the capping mechanism to control the lifting and lowering of the capping mechanism; the control system is connected to the capping mechanism and controls the capping mechanism through a programmable controller (PLC); the product conveying and positioning system is arranged under the capping mechanism to convey the product. The linear multi-head capping device has a complex structure and high manufacturing cost, and the capping head has a specific shape according to the shape of the barrel cover, and has no compatibility.

[0004] The utility model patent with application number 201320636972.0 provides an oil bottle tightening device, including a machine base, an electric control box, a lifting capping mechanism and a tightening mold, wherein the electric control box is electrically connected to the lifting capping mechanism, and a tightening mold is detachably assembled below the lifting capping mechanism. The capping mold of the oil bottle tightening device can be disassembled, and a variety of barrel caps can be compatible by replacing the capping mold. However, in actual production, there will be large errors in the same barrel cap. The capping mold is easy to scratch the barrel cap when it is rotated from top to bottom to clamp the barrel cap. The capping may also fail to meet the requirements due to the error of the barrel cap itself, and this capping method requires high positioning accuracy of the barrel cap. Summary of the invention

[0005] In order to overcome the defects of the above-mentioned prior art such as complex structure, high manufacturing cost and high requirement for positioning accuracy of bottle caps, the present invention provides a spinning device, including a vertical frame, a conveyor line, a lifting mechanism, a tightening mechanism, a mounting plate, a capping cylinder, a capping disk and a driving motor; the mounting plate, the tightening mechanism and the conveyor line for the containers to be spin-pressed and packaged are arranged in sequence from the upper end to the lower end of the vertical frame, the conveyor line passes through the vertical frame, the tightening mechanism is installed on the lifting mechanism, the capping cylinder and the driving motor are both fixed on the mounting plate, and the capping disk is fixed to the output end of the capping cylinder. The structure is simple, the space occupied is small, and the manufacturing cost is low.

[0006] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme:

[0007] The present invention provides a spinning device, comprising a vertical frame, a conveying line, a lifting mechanism, a tightening mechanism, a mounting plate, a capping cylinder, a capping plate and a driving motor;

[0008] The mounting plate, the tightening mechanism and the conveying line for the containers to be spin-packed are arranged in sequence from the upper end to the lower end of the vertical frame, the conveying line passes through the vertical frame, the tightening mechanism is installed on the lifting mechanism, the capping cylinder and the driving motor are both fixed on the mounting plate, and the capping plate is fixed on the output end of the capping cylinder.

[0009] The lifting mechanism comprises four upper fixing seats, four synchronous pulleys, a synchronous belt, four screw rods, four screw rod nuts, four lower fixing seats, a hand wheel, a tension wheel mounting plate and a tension wheel.

[0010] The upper fixed seat and the lower fixed seat are both fixed on the vertical frame, the lower end of the screw rod is connected to the lower fixed seat, and the upper end thereof passes through the upper fixed seat, and the screw rod is rotatable; the synchronous pulley is fixed to the upper end of the screw rod, the four synchronous pulleys and the tensioning wheel are connected by a synchronous belt and are in the same horizontal plane, and the tensioning wheel is fixed on the tensioning wheel mounting plate; the handwheel is fixed on the top of one of the screw rods, and the screw rod nut is sleeved on the screw rod.

[0011] The tightening mechanism includes a first main mounting crossbeam, a second main mounting crossbeam, a first guide rail, a second guide rail, a first gear mounting seat, a second gear mounting seat, a driving gear, two first transition gears, two second transition gears, two front transfer gears, two intermediate gears, two rear transfer gears, two first connecting rods, two second connecting rods, a first connecting rod, a second connecting rod, a first tightening cylinder, a second tightening cylinder, four rotary cover plates, a pin shaft, a pin shaft mounting plate and two flat plate mounting frames.

[0012] The driving gear is mounted on the output shaft of the driving motor, and the two first transition gears are respectively located on both sides of the driving gear and are meshed with the driving gear;

[0013] The two second transition gears are respectively located on both sides of the two first transition gears and mesh with the corresponding first transition gears;

[0014] The two front transfer gears are meshed with the two second transition gears respectively, the intermediate gear is located between the front transfer gear and the rear transfer gear, and the front transfer gear and the intermediate gear, as well as the intermediate gear and the rear transfer gear, are meshed with each other respectively.

[0015] The two first transition gears are respectively sleeved on their respective gear mounting shafts and can rotate freely along the gear mounting shafts; the lower ends of the respective gear mounting shafts of the two first transition gears are respectively hinged to the pin shafts through the first connecting rods, the pin shafts are respectively mounted on the pin shaft mounting plate, and the pin shafts are concentric with the output shaft of the driving motor;

[0016] The two second transition gears are respectively sleeved on their respective gear mounting shafts and can rotate freely along the gear mounting shafts; the gear mounting shafts of the two second transition gears are respectively fixed on the first gear mounting seat and the second gear mounting seat, and the upper ends of the respective gear mounting shafts are respectively hinged to the gear mounting shafts of the first transition gears through the second connecting rods;

[0017] The front transfer gear, the middle gear and the rear transfer gear are respectively sleeved on their respective gear mounting shafts and can rotate freely along the corresponding gear mounting shafts, wherein the gear mounting shafts of the front transfer gear, the middle gear and the rear transfer gear are respectively fixed on the first gear mounting seat, and the gear mounting shafts of the other front transfer gear, the middle gear and the rear transfer gear are respectively fixed on the second gear mounting seat;

[0018] The lower ends of the two front transfer gears and the two rear transfer gears are respectively provided with a rotary cover plate, and the rotary cover plate is fixedly connected to the corresponding gear mounting shaft.

[0019] The two ends of the first main installation beam are respectively fixed to two of the screw nuts, and the two ends of the second main installation beam are respectively fixed to the remaining two screw nuts, and the first main installation beam and the second main installation beam are both arranged parallel to the conveyor line.

[0020] The first tightening cylinder and the second tightening cylinder are respectively fixed to the outer sides of the first main mounting beam and the second main mounting beam, the two ends of the first connecting rod are respectively fixed to the first main mounting beam and the first tightening cylinder, and the two ends of the second connecting rod are respectively fixed to the second main mounting beam and the second tightening cylinder.

[0021] The first gear mounting seat and the second gear mounting seat are arranged in parallel between the first main mounting beam and the second main mounting beam, and are in the same direction as the first main mounting beam and the second main mounting beam;

[0022] The first guide rail and the second guide rail are arranged in parallel on both sides of the first connecting rod and the second connecting rod, and one end of each of the first guide rail and the second guide rail is fixed on the first main mounting beam, and the other end of each of the first guide rail and the second gear mounting seat is passed through the first gear mounting seat and the second gear mounting seat in sequence, and is fixed on the second main mounting beam.

[0023] The mounting plate is fixed on two plate mounting frames, and the two plate mounting frames are arranged in parallel and perpendicular to the first main mounting crossbeam and the second main mounting crossbeam.

[0024] Compared with the closest prior art, the technical solution provided by the present invention has the following beneficial effects:

[0025] The spinning device provided by the present invention comprises a vertical frame, a conveying line, a lifting mechanism, a tightening mechanism, a mounting plate, a capping cylinder, a capping plate and a driving motor; the mounting plate, the tightening mechanism and the conveying line for the container to be spin-formed and packaged are arranged in sequence from the upper end to the lower end of the vertical frame, the conveying line passes through the vertical frame, the tightening mechanism is installed on the lifting mechanism, the capping cylinder and the driving motor are both fixed on the mounting plate, and the capping plate is fixed on the output end of the capping cylinder, the structure is simple, the space occupied is small, and the manufacturing cost is low;

[0026] The spinning device provided by the present invention is provided with four capping discs, which simultaneously clamp and tighten the bottle caps inwards, have strong tolerance for the errors of the bottle caps themselves, cause little damage to the barrel cover, and can also correct the position of the bottle caps;

[0027] The driving motor in the spinning device provided by the present invention does not need to be operated intermittently, the capping power is continuous, and the capping efficiency is high;

[0028] The first tightening cylinder and the second tightening cylinder in the spinning device provided by the present invention are both multi-stroke cylinders, which enables the spinning device provided by the present invention to be compatible with the capping function of bottle caps with more than two diameters;

[0029] The driving gear in the spinning device provided by the present invention is installed on the output shaft of the driving motor, the lower ends of the gear mounting shafts of the two first transition gears are respectively hinged to the pin shaft through the first connecting rod, the upper ends of the gear mounting shafts of the two second transition gears are respectively hinged to the gear mounting shafts of the first transition gears through the second connecting rod, and the different gears are meshed with each other, which can ensure the continuous and smooth transmission of the output force of the driving motor, thereby improving the reliability and accuracy of the spinning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a general assembly diagram of a spinning device in an embodiment of the present invention;

[0031] Figure 2 is a front view of a spinning device according to an embodiment of the present invention;

[0032] Figure 3 In the embodiment of the present invention Figure 2 An enlarged view of I is shown;

[0033] Figure 4 is a first structural diagram of the tightening mechanism in an embodiment of the present invention;

[0034] Figure 5 is a second structural diagram of the tightening mechanism in an embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of a lifting mechanism in an embodiment of the present invention;

[0036] In the figure, 1-vertical frame, 2. lifting mechanism, 3. tightening mechanism, 4. mounting plate, 5. capping cylinder, 6. fixing motor, 7. bottle cap, 8. bottle body, 9. conveyor line, 10. capping plate, 11. first main mounting beam, 12. first guide rail, 13. first gear mounting seat, 14. front transfer gear, 15. gear mounting shaft of front transfer gear, 16. intermediate gear, 17. gear mounting shaft of intermediate gear, 18. gear mounting shaft of rear transfer gear, 19. rear transfer gear, 20. gear mounting shaft of second transition gear, 2 1. The gear mounting shaft of the first transition gear, 22. The flat plate mounting frame, 23. The driving gear, 24. The first transition gear, 25. The second connecting rod, 26. The second transition gear, 27. The second guide rail, 28. The first connecting rod, 29. The first tightening cylinder, 30. The first connecting rod, 31. The cover plate, 33. The pin shaft, 34. The pin shaft mounting plate, 35. The upper fixed seat, 36. The synchronous pulley, 37. The synchronous belt, 38. The lead screw, 39. The lead screw nut, 40. The lower fixed seat, 41. The hand wheel, 43. The tension wheel mounting plate, 44. The tension wheel. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0038] The embodiment of the present invention provides a spinning device, such as Figure 1 and Figure 2 As shown, it includes a vertical frame 1, a conveyor line 9, a lifting mechanism 2, a tightening mechanism 3, a mounting plate 4, a capping cylinder 5, a capping plate 10 and a driving motor 6;

[0039] From the upper end to the lower end of the vertical frame 1, a mounting plate 4, a tightening mechanism 3 and a conveying line 9 for the containers to be spin-formed are arranged in sequence. The conveying line 9 passes through the vertical frame 1. The tightening mechanism 3 is installed on the lifting mechanism 2. The capping cylinder 5 and the driving motor 6 are both fixed on the mounting plate 4. The capping plate 10 is fixed on the output end of the capping cylinder 5 (such as Figure 3 shown).

[0040] like Figure 6 As shown, the lifting mechanism 2 includes four upper fixed seats 35, four synchronous pulleys 36, a synchronous belt 37, four screw rods 38, four screw nuts 39, four lower fixed seats 40, a hand wheel 41, a tension wheel mounting plate 43 and a tension wheel 44;

[0041] The upper fixed seat 35 and the lower fixed seat 40 are both fixed on the vertical frame 1, the lower end of the screw rod 38 is connected to the lower fixed seat 40, and its upper end passes through the upper fixed seat 35, and the screw rod 38 is rotatable; the synchronous pulley 36 is fixed to the upper end of the screw rod 38, the four synchronous pulleys 36 and the tensioning wheel are connected by the synchronous belt 37 and are in the same horizontal plane, and the tensioning wheel 44 is fixed on the tensioning wheel mounting plate 43; the handwheel 41 is fixed on the top of one of the screw rods 38, and the screw rod nut 39 is sleeved on the screw rod 38.

[0042] like Figure 4 and Figure 5 As shown, the tightening mechanism 3 includes a first main mounting beam 11, a second main mounting beam, a first guide rail 12, a second guide rail 27, a first gear mounting seat 13, a second gear mounting seat, a driving gear 23, two first transition gears 24, two second transition gears 26, two front transfer gears 14, two intermediate gears 16, two rear transfer gears 19, two first connecting rods 30, two second connecting rods 25, a first connecting rod 28, a second connecting rod, a first tightening cylinder 29, a second tightening cylinder, four rotary cover plates 31, a pin shaft 33, a pin shaft mounting plate 34 and two flat plate mounting frames 22.

[0043] The driving gear 23 is mounted on the output shaft of the driving motor 6, and the two first transition gears 24 are respectively located on both sides of the driving gear 23 and are both meshed with the driving gear 23;

[0044] The two second transition gears 26 are respectively located on both sides of the two first transition gears 24 and mesh with the corresponding first transition gears 24;

[0045] The two front transfer gears are meshed with the two second transition gears 26 respectively. The middle gear 16 is located between the front transfer gear 14 and the rear transfer gear 19 . The front transfer gear 14 and the middle gear 16 , as well as the middle gear 16 and the rear transfer gear 19 , are meshed with each other respectively.

[0046] The two first transition gears 24 are respectively sleeved on their respective gear mounting shafts (i.e., one of the second transition gears 26 is sleeved on the gear mounting shaft 20 of the corresponding first transition gear), and can rotate freely along the gear mounting shaft; the lower ends of the respective gear mounting shafts of the two first transition gears are respectively hinged to the pin shaft 33 through the first connecting rod 30, the pin shaft 33 is mounted on the pin shaft mounting plate 34, and the pin shaft 33 is concentric with the output shaft of the driving motor 6;

[0047] The two second transition gears 26 are respectively sleeved on their respective gear mounting shafts (i.e., one of the second transition gears 26 is sleeved on the gear mounting shaft 20 of the corresponding second transition gear), and can rotate freely along the gear mounting shaft; the gear mounting shafts of the two second transition gears 26 are respectively fixed on the first gear mounting seat 13 and the second gear mounting seat, and the upper ends of the respective gear mounting shafts are respectively hinged to the gear mounting shaft 21 of the first transition gear through the second connecting rod 25;

[0048] The front transfer gear 14 is sleeved on the gear mounting shaft 15 of the front transfer gear, and the intermediate gear 16 and the rear transfer gear 19 are sleeved on their respective gear mounting shafts, and can rotate freely along the corresponding gear mounting shafts, respectively, wherein the gear mounting shafts of the front transfer gear, the intermediate gear 16 and the rear transfer gear 19 (i.e., the gear mounting shaft 15 of one of the front transfer gears, the gear mounting shaft 17 of the intermediate gear 16, and the gear mounting shaft 18 of the rear transfer gear) are fixed on the first gear mounting seat 13, wherein the gear mounting shafts of the other front transfer gear, the intermediate gear 16 and the rear transfer gear (i.e., the gear mounting shaft 15 of one of the front transfer gears, the gear mounting shaft 17 of the intermediate gear 16, and the gear mounting shaft 18 of the rear transfer gear) are fixed on the second gear mounting seat;

[0049] The lower ends of the two front transfer gears and the two rear transfer gears are respectively provided with a rotary cover plate 31, and the rotary cover plate 31 is fixedly connected to the corresponding gear mounting shaft.

[0050] Two ends of the first main installation beam 11 are respectively fixed to two of the screw nuts, and two ends of the second main installation beam are respectively fixed to the remaining two screw nuts, and the first main installation beam 11 and the second main installation beam are both arranged parallel to the conveyor line 9.

[0051] The first tightening cylinder 29 and the second tightening cylinder are respectively fixed to the outside of the first main mounting beam 11 and the second main mounting beam, the two ends of the first connecting rod 28 are respectively fixed to the first main mounting beam 11 and the first tightening cylinder 29, and the two ends of the second connecting rod are respectively fixed to the second main mounting beam and the second tightening cylinder.

[0052] The first gear mounting seat 13 and the second gear mounting seat are arranged in parallel between the first main mounting beam 11 and the second main mounting beam, and are in the same direction as the first main mounting beam 11 and the second main mounting beam;

[0053] The first guide rail 12 and the second guide rail 27 are arranged in parallel on both sides of the first connecting rod 28 and the second connecting rod, and one end of each of the first guide rail 12 and the second guide rail 27 is fixed on the first main mounting beam 11, and the other end of each passes through the first gear mounting seat 13 and the second gear mounting seat in sequence, and is fixed on the second main mounting beam.

[0054] The mounting plate 4 is fixed on two plate mounting frames 22 , and the two plate mounting frames 22 are arranged in parallel and perpendicular to the first main mounting crossbeam 11 and the second main mounting crossbeam.

[0055] The working process of the spinning device provided by the embodiment of the present invention is as follows:

[0056] When the spinning device is working, the bottle body 8 is placed on the barrel mouth by the front end scraping device or manually with the bottle cap 7, and then transported to the lower side of the tightening mechanism 2 by the conveyor line 9. When the bottle body 8 is transported to the right place, the conveyor line 9 stops running, and the capping cylinder 5 drives the capping plate 10 to move downward to press the bottle cap 7 into the threaded mouth of the bottle body 8. Then the first tightening cylinder 29 runs, the tightening mechanism 2 is tightened, and the four capping plates 31 clamp inward and tighten the bottle cap 7. After the bottle cap 7 is tightened, the capping cylinder 5 and the tightening mechanism 2 return to their original positions.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Ordinary technicians in the relevant field can still modify or make equivalent substitutions to the specific implementation methods of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A spinning device, characterized in that: It includes a vertical frame, a conveyor line, a lifting mechanism, a tightening mechanism, a mounting plate, a capping cylinder, a capping plate and a driving motor; The mounting plate, the tightening mechanism and the conveying line for the containers to be spin-formed and packaged are arranged in sequence from the upper end to the lower end of the vertical frame, the conveying line passes through the vertical frame, the tightening mechanism is installed on the lifting mechanism, the capping cylinder and the driving motor are both fixed on the mounting plate, and the capping plate is fixed on the output end of the capping cylinder; The tightening mechanism comprises a first main mounting crossbeam, a second main mounting crossbeam, a first guide rail, a second guide rail, a first gear mounting seat, a second gear mounting seat, a driving gear, two first transition gears, two second transition gears, two front transfer gears, two intermediate gears, two rear transfer gears, two first connecting rods, two second connecting rods, a first connecting rod, a second connecting rod, a first tightening cylinder, a second tightening cylinder, four rotary cover plates, a pin shaft, a pin shaft mounting plate and two flat plate mounting frames; The first tightening cylinder and the second tightening cylinder are both multi-stroke cylinders; The driving gear is mounted on the output shaft of the driving motor, and the two first transition gears are respectively located on both sides of the driving gear and are meshed with the driving gear; The two second transition gears are respectively located on both sides of the two first transition gears and mesh with the corresponding first transition gears; The two rear transfer gears are respectively meshed with the two second transition gears, the intermediate gear is located between the front transfer gear and the rear transfer gear, and the front transfer gear and the intermediate gear, as well as the intermediate gear and the rear transfer gear, are respectively meshed with each other; The two first transition gears are respectively sleeved on their respective gear mounting shafts and can rotate freely along the gear mounting shafts; the lower ends of the respective gear mounting shafts of the two first transition gears are respectively hinged to the pin shafts through the first connecting rods, the pin shafts are respectively mounted on the pin shaft mounting plate, and the pin shafts are concentric with the output shaft of the driving motor; The two second transition gears are respectively sleeved on their respective gear mounting shafts and can rotate freely along the gear mounting shafts; the gear mounting shafts of the two second transition gears are respectively fixed on the first gear mounting seat and the second gear mounting seat, and the upper ends of the respective gear mounting shafts are respectively hinged to the gear mounting shafts of the first transition gears through the second connecting rods; The front transfer gear, the middle gear and the rear transfer gear are respectively sleeved on their respective gear mounting shafts and can rotate freely along the corresponding gear mounting shafts, wherein the gear mounting shafts of the front transfer gear, the middle gear and the rear transfer gear are respectively fixed on the first gear mounting seat, and the gear mounting shafts of the other front transfer gear, the middle gear and the rear transfer gear are respectively fixed on the second gear mounting seat; The lower ends of the two front transfer gears and the two rear transfer gears are respectively provided with a rotary cover plate, and the rotary cover plate is fixedly connected to the corresponding gear mounting shaft; The two ends of the first main installation beam are respectively fixed to two of the screw nuts, and the two ends of the second main installation beam are respectively fixed to the remaining two screw nuts, and the first main installation beam and the second main installation beam are both arranged parallel to the conveyor line; The first tightening cylinder and the second tightening cylinder are respectively fixed to the outer sides of the first main mounting beam and the second main mounting beam, the two ends of the first connecting rod are respectively fixed to the first main mounting beam and the first tightening cylinder, and the two ends of the second connecting rod are respectively fixed to the second main mounting beam and the second tightening cylinder.

2. The spinning device according to claim 1, characterized in that: The lifting mechanism comprises four upper fixing seats, four synchronous pulleys, a synchronous belt, four screw rods, four screw rod nuts, four lower fixing seats, a hand wheel, a tension wheel mounting plate and a tension wheel.

3. The spinning device according to claim 2, characterized in that: The upper fixed seat and the lower fixed seat are both fixed on the vertical frame, the lower end of the screw rod is connected to the lower fixed seat, and the upper end thereof passes through the upper fixed seat, and the screw rod is rotatable; the synchronous pulley is fixed to the upper end of the screw rod, the four synchronous pulleys and the tensioning wheel are connected by a synchronous belt and are in the same horizontal plane, and the tensioning wheel is fixed on the tensioning wheel mounting plate; the handwheel is fixed on the top of one of the screw rods, and the screw rod nut is sleeved on the screw rod.

4. The spinning device according to claim 1, characterized in that: The first gear mounting seat and the second gear mounting seat are arranged in parallel between the first main mounting beam and the second main mounting beam, and are in the same direction as the first main mounting beam and the second main mounting beam; The first guide rail and the second guide rail are arranged in parallel on both sides of the first connecting rod and the second connecting rod, and one end of each of the first guide rail and the second guide rail is fixed on the first main mounting beam, and the other end of each of the first guide rail and the second gear mounting seat is passed through the first gear mounting seat and the second gear mounting seat in sequence, and is fixed on the second main mounting beam.

5. The spinning device according to claim 1, characterized in that: The mounting plate is fixed on two plate mounting frames, and the two plate mounting frames are arranged in parallel and perpendicular to the first main mounting crossbeam and the second main mounting crossbeam.

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