A support device for jacking flexible strip material

Abstract

A kind of support device for jacking flexible belt material, it is related to mechanical equipment maintenance technical field, including cross bar, support assembly fixed on cross bar and connecting mechanism for supporting cross bar;Support assembly includes two support arms located in the same cross section of cross bar and fixed vertically with cross bar, and two support arms jointly constitute V-shaped structure;Connecting mechanism is used to be installed on the mounting beam of the two sides of carrier roller, and the two ends of cross bar are rotatably suspended on connecting mechanism, and operator only needs to rotate cross bar by 180 degrees to complete the jacking of belt, V-shaped support arm in jacking state, belt, cross bar, V-shaped support arm form stable triangular mechanical structure, can effectively prevent shaking or torsion, ensure the safety of operation, the overall structure of the device is simple, the manufacturing cost is low, easy to maintain and popularize.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment maintenance technology, specifically a support device for lifting flexible strip materials. Background Technology

[0002] Belt conveyors are widely used for material transport in industries such as mining, metallurgy, food processing, papermaking, and printing. Replacing the lower idler rollers is a common but tedious task during belt conveyor maintenance. It typically requires operators to manually lift the belt using tools such as pry bars and continuously press down to keep it suspended before replacing the rollers. This method is not only labor-intensive but also requires multiple people, is time-consuming, and inefficient.

[0003] Currently, a common solution in existing technologies is to use lifting devices to replace manual operation. Chinese Patent Publication No. CN211967324U discloses a device for quickly changing the return idler rollers of a conveyor belt. It uses two adjustable-length sleeves installed on the upper and lower working surfaces of the belt conveyor, with lifting rings connected to both ends of the sleeves. A lifting device connects the upper and lower lifting rings to lift the lower return belt. This device achieves a certain degree of mechanization, replacing manual operation, but it still requires external lifting equipment. Furthermore, for industries with high environmental requirements, dust covers or other facilities are often installed above the belt conveyor, making this device unsuitable due to its lack of flexibility. Other existing technologies also include devices, which are often more complex in structure and require hydraulic or electric drive units to lift the belt, resulting in higher costs. Utility Model Content

[0004] This utility model provides a support device for lifting flexible belts. The device has a simple structure and is easy to manufacture. It can lift the belt by using the lever principle, which is stable and reliable. It can also be used for belt conveyors in various scenarios.

[0005] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a support device for lifting flexible strip, including a crossbar, a support assembly fixed on the crossbar, and a connecting mechanism for supporting the crossbar; the support assembly includes two support arms located on the same cross section of the crossbar and fixed perpendicularly to the crossbar, the two support arms together forming a V-shaped structure; the connecting mechanism is used to be installed on the mounting beams on both sides of the idler roller, and the two ends of the crossbar are rotatably suspended on the connecting mechanism.

[0006] As an optimized solution for the aforementioned support device for lifting flexible strips: the support components are in multiple sets, arranged at equal intervals along the length of the crossbar.

[0007] As another optimized solution for the aforementioned support device for lifting flexible strips: the included angle between the two support arms in the support assembly is 30 degrees to 150 degrees.

[0008] As another optimized solution for the aforementioned support device for lifting flexible strips: the end of the support arm away from the crossbar is provided with a contact part that contacts the belt.

[0009] As another optimized solution for the aforementioned support device for lifting flexible belts: the contact part is a rolling bearing or pulley, the outer ring of which makes rolling contact with the belt.

[0010] As another optimized solution for the aforementioned support device for lifting flexible belts: the contact part is a wear-resistant bushing, the edge of which makes frictional contact with the belt.

[0011] As another optimized solution for the aforementioned support device for lifting flexible strips: a rotating handle is provided at one end of the crossbar.

[0012] As another optimized solution for the aforementioned support device for lifting flexible strips: a hollow extension rod for increasing the length of the rotating handle is sleeved on the outside of the rotating handle, and the extension rod is detachably connected to the rotating handle.

[0013] As another optimized solution for the aforementioned support device for lifting flexible strips: the mounting beam is an I-beam, and the connecting mechanism includes a hanging plate and side plates vertically fixed to the upper two sides of the hanging plate. The side plates and the hanging plate together form a U-shaped structure. The two side plates are provided with slots for engaging the lower flange of the I-beam. Bolts pass through the hanging plate, and nuts are provided at the ends of the bolts. After the nuts are tightened, they act on the lower flange of the I-beam. The lower part of the hanging plate is provided with multiple support slots for suspending crossbars.

[0014] As another optimized solution for the aforementioned support device for lifting flexible strips: the opening of the support groove is inclined upwards.

[0015] Compared with existing technologies, this invention has the following advantages: By setting a V-shaped support arm and a rotating handle on the crossbar, the operator only needs to rotate the crossbar 180 degrees to complete the belt lifting. The entire operation can be completed within 30 seconds, significantly improving the efficiency of changing idlers and reducing the workload of operators. In the lifting state, the belt, crossbar, and V-shaped support arm form a stable triangular mechanical structure, effectively preventing swaying or twisting and ensuring operational safety. The device has a simple overall structure, low manufacturing cost, and is easy to maintain and promote. Attached Figure Description

[0016] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a front view of the structure of this utility model before it is lifted. Figure 3 This is a side view of the structure of this utility model before it is lifted. Figure 4 This is a side view of the structure of the present invention after it has been lifted. Figure 5 This is a side view of the connecting mechanism of this utility model. Figure 6 This is a front view structural diagram of the connecting mechanism of this utility model; Reference numerals: 1. Crossbar; 2. Support assembly; 201. Support arm; 2011. Support rod; 3. Contact part; 4. Rotating handle; 5. Extension rod; 6. Mounting beam; 7. Connecting mechanism; 701. Hanging plate; 7011. Support groove; 702. Side plate; 7021. Slot; 8. Idler roller; 9. Belt. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0018] like Figures 1 to 6 As shown, this embodiment provides a support device for lifting flexible belts. The device includes a crossbar 1, a support assembly 2 fixed on the crossbar 1, and a connecting mechanism 7 for supporting the crossbar 1. The connecting mechanism 7 is mounted on mounting beams 6 on both sides of the idler roller 8, and the two ends of the crossbar 1 are rotatably suspended on the connecting mechanism 7. By rotating the crossbar 1, the support assembly 2 lifts the belt 9.

[0019] The crossbar 1 is a long strip structure made of high-strength steel with a circular cross-section. Its length can be customized according to the width of the belt conveyor. For example, for a belt conveyor that is 1.2 meters wide, the length of the crossbar 1 is 1.6 meters to ensure that there is a certain amount of slack at both ends.

[0020] The support assembly 2 includes two support arms 201 located on the same cross section of the crossbar 1 and fixed perpendicularly to the crossbar 1. The support arms 201 are made of high-strength steel, and the two support arms 201 together form a V-shaped structure. The support arms 201 are welded and fixed to the crossbar 1. The included angle between the two support arms 201 located on the same cross section is 30 degrees to 150 degrees. This embodiment adopts a 75-degree design, which ensures both a certain support height and good stability. The support assembly 2 can be designed in two or more sets. For narrower belt conveyors, whose belt 9 is also narrower, two sets of support assemblies 2 are sufficient to lift the belt 9. For wider belt conveyors, whose belt 9 is often wider and heavier, the support assembly 2 can be designed in multiple sets, such as 3 to 4 sets, arranged at equal intervals along the length of the crossbar 1. This design allows the belt 9 to be lifted as a whole while ensuring uniform load distribution.

[0021] The mounting beam 6 is an I-beam structure. The connecting mechanism 7 includes a hanging plate 701 and side plates 702 vertically fixed to the upper sides of the hanging plate 701. The side plates 702 and the hanging plate 701 together form a U-shaped structure. The side plates 702 and the hanging plate 701 are welded and fixed or integrally formed. Both the hanging plate 701 and the side plates 702 are rectangular steel plates. The length of the hanging plate 701 is greater than the length of the side plates 702. The two side plates 702 are provided with slots 7021. The slots 7021 are U-shaped structures. The two slots 7021 are located at the same height, and the width of the slots 7021 is slightly greater than the flange thickness of the I-beam. The lower part of the hanging plate 701 is provided with multiple support slots 7011 located at different heights. The width of the support slots 7011 is slightly greater than the diameter of the crossbar 1, so that when the crossbar 1 is inserted into the support slots 7011, it can rotate within the support slots 7011. The bolt passes through the mounting plate 701, with its height flush with or slightly below the lower edge of the slot 7021. A nut is attached to the end of the bolt, and when tightened, it acts on the lower flange of the I-beam. During installation, the slot 7021 is inserted into the lower flange on one side of the I-beam, with the bolt positioned below the I-beam. The nut is then tightened, acting on the lower flange on the other side of the I-beam, thus fixing the entire connecting mechanism 7 to the mounting beam 6. For disassembly, simply loosen the nut to remove the connecting mechanism 7.

[0022] A rotating handle 4 is provided at one end of the crossbar 1. The rotating handle 4 is a straight steel pipe that is welded and fixed to the crossbar 1. The rotating handle 4 is perpendicular to the axis of symmetry of the crossbar 1 and the two support arms 201 that form a V-shaped structure.

[0023] When it is necessary to replace the idler roller 8, first fix the connecting mechanism 7 to the mounting beams 6 on both sides near the idler roller 8 to be replaced as described above. Suspend both ends of the crossbar 1 in the support groove 7011 at the bottom of the hanging plate 701. At this time, the support arm 201 hangs down due to gravity, and the rotating handle 4 is in a horizontal position. The operator rotates the rotating handle 4 to rotate it 180 degrees upward, thereby driving the crossbar 1 to rotate 180 degrees, so that the center line of the included angle of the two support arms 201 changes from vertical downward to vertical upward, thereby realizing the lifting of the belt 9. For some idler rollers 8 with a large diameter, the crossbar 1 can be suspended in the support groove 7011 at a higher height, thereby increasing the lifting height of the support arm 201. After the lifting is completed, a stable space can be provided for replacing the idler roller 8.

[0024] During the lifting process, the free end of the support arm 201 will first contact the lower surface of the belt 9. To prevent the support arm 201 from damaging the belt 9, a contact part 3 is provided at the free end of the support arm 201. The contact part 3 has various structures. This embodiment provides two structures: 1. The contact part 3 is a rolling bearing or pulley. Taking a bearing as an example, the inner ring of the bearing is connected to the support arm 201 through a pin, and the outer ring can rotate freely. During the lifting process, the outer ring of the bearing rolls into contact with the lower surface of the belt 9; 2. The contact part 3 is a wear-resistant bushing made of engineering plastic or other wear-resistant materials. The wear-resistant bushing is wrapped around the free end of the support arm 201. During the lifting process, the wear-resistant bushing makes frictional contact with the lower surface of the belt 9. Compared with the bearing, the wear-resistant bushing is cheaper and suitable for dusty environments.

[0025] There are various connection structures between the support arm 201 and the contact part 3. This embodiment provides a specific structure: a single support arm 201 adopts an integrated forked design, consisting of two circular cross-section support rods 2011, whose roots meet at the same welding point, with an included angle of 5 to 10 degrees between them. Mounting holes are machined at the ends of the two support rods 2011 for inserting pins. Bearings are mounted on the pins, with the outer ring of the bearing protruding beyond the edge of the support rod 2011 to ensure rolling contact with the belt 9 during the lifting process.

[0026] During the lifting process, the crossbar 1 will move laterally within the support groove 7011, which may cause the crossbar 1 to detach from the support groove 7011. In order to improve the stability of the crossbar 1 during the lifting process, the opening of the support groove 7011 is tilted upward with an inclination angle of 20 to 30 degrees. The tilted design of the groove opening can effectively prevent the crossbar 1 from slipping off accidentally and improve the safety of the device during use.

[0027] For some heavier belt conveyors 9, turning the crossbar 1 using only the handle 4 is laborious, or even difficult. To make the lifting process easier, an extension rod 5 is attached to the outside of the handle 4. The extension rod 5 is a hollow steel pipe and is detachably connected to the handle 4. The extension rod 5 adds a power arm, making lifting easier and suitable for heavy-duty belt conveyors. The detachable design makes it more convenient to carry.

[0028] The operator only needs to rotate the crossbar 1 180 degrees to lift the belt 9. The entire operation can be completed within 30 seconds, significantly improving the efficiency of changing the idler roller 8 and reducing the operator's workload. In the lifted state, the V-shaped support arm 201, belt 9, crossbar 1, and V-shaped support arm 201 form a stable triangular mechanical structure, effectively preventing swaying or twisting and ensuring operational safety. The device has a simple overall structure, low manufacturing cost, and is easy to maintain and promote.

[0029] The support arm 201 and the crossbar 1 can also be connected by bolts, which makes it easy to adjust the angle or replace the support arm 201 of different lengths to adapt to different working conditions; high-strength buckles can also be used to achieve quick assembly; or casting or forging processes can be used to integrally form it with the crossbar 1.

[0030] In addition to using the rotating handle 4, the crossbar 1 can also be driven by hydraulic power. Specifically, a gear is fixedly installed at one end of the crossbar 1, and a hydraulic cylinder is set on one side of the crossbar 1. The installation height should ensure that the axis of the hydraulic cylinder is approximately at the same height as the crossbar 1. The hydraulic cylinder can drive the piston rod to make reciprocating linear motion. A rack is connected to the end of the piston rod, and the rack is meshed with the aforementioned gear. By driving the piston rod to make reciprocating linear motion, the gear is driven to rotate clockwise or counterclockwise, ultimately realizing the lifting and resetting of the belt 9.

[0031] 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 support device for lifting flexible strip materials, characterized in that: It includes a crossbar (1), a support assembly (2) fixed on the crossbar (1), and a connecting mechanism (7) for supporting the crossbar (1); the support assembly (2) includes two support arms (201) located on the same cross section of the crossbar (1) and fixed perpendicularly to the crossbar (1), the two support arms (201) together forming a V-shaped structure; the connecting mechanism (7) is used to be installed on the mounting beams (6) on both sides of the roller (8), and the two ends of the crossbar (1) are rotatably suspended on the connecting mechanism (7).

2. The support device for lifting flexible strips according to claim 1, characterized in that: The support components (2) are in multiple groups and are arranged at equal intervals along the length of the crossbar (1).

3. The support device for lifting flexible strips according to claim 1, characterized in that: The included angle between the two support arms (201) in the support assembly (2) is 30 to 150 degrees.

4. A support device for lifting flexible strips according to claim 1, characterized in that: The support arm (201) has a contact part (3) that contacts the belt (9) at the end away from the crossbar (1).

5. A support device for lifting flexible strips according to claim 4, characterized in that: The contact part (3) is a rolling bearing or pulley, and its outer ring is in rolling contact with the belt (9).

6. A support device for lifting flexible strips according to claim 4, characterized in that: The contact part (3) is a wear-resistant bushing, and its edge is in frictional contact with the belt (9).

7. A support device for lifting flexible strips according to claim 1, characterized in that: A rotating handle (4) is provided at one end of the crossbar (1).

8. A support device for lifting flexible strips according to claim 7, characterized in that: The rotating handle (4) is externally fitted with a hollow extension rod (5) for increasing its length, and the extension rod (5) is detachably connected to the rotating handle (4).

9. A support device for lifting flexible strips according to claim 1, characterized in that: The mounting beam (6) is an I-beam. The connecting mechanism (7) includes a hanging plate (701) and side plates (702) vertically fixed to the upper two sides of the hanging plate (701). The side plates (702) and the hanging plate (701) together form a U-shaped structure. The two side plates (702) are provided with slots (7021) for inserting into the lower flange of the I-beam. The bolt passes through the hanging plate (701) and the bolt end is provided with a nut. After the nut is tightened, it acts on the lower flange of the I-beam. The lower part of the hanging plate (701) is provided with multiple support slots (7011) for suspending the crossbar (1).

10. A support device for lifting flexible strips according to claim 9, characterized in that: The opening of the support groove (7011) is inclined upward.

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