Special fixture for belt maintenance

Abstract

This utility model discloses a special clamp for belt conveyor maintenance, mainly relating to the field of conveyor equipment maintenance. It includes two opposing clamping members, each comprising an L-shaped main flange and an auxiliary flange. The main and auxiliary flanges are vertically connected, and the external corner of the connection point is rounded. A hanging ring extending outwards is fixed in the center of one of the main flanges. The main flanges of the two clamping members overlap and are arranged side-by-side, with the space between them used to clamp the belt. The two clamping members are detachably locked in place by fasteners. The advantages of this utility model are: it can easily clamp various belts, tightening slack belts, saving time and reducing maintenance costs for the replacement and maintenance of slag conveyor belts and coal conveyor belts.

Description

Technical Field

[0001] This utility model relates to the field of conveyor equipment maintenance, specifically a special clamp for belt maintenance. Background Technology

[0002] When replacing or repairing existing coal and slag conveyor belts, the belt head needs to be tightened to allow space for maintenance. The traditional method is to apply tension only with hemp rope. However, due to the small contact area between the hemp rope and the belt and the uneven force distribution, local stress concentration occurs on the belt, which can easily lead to irreversible deformation damage such as longitudinal tearing, edge curling, and separation of the canvas layer. This not only shortens the service life of the belt but also forces maintenance personnel to repeatedly adjust the position of the hemp rope, which is time-consuming and labor-intensive, prolongs the maintenance cycle, and significantly increases labor costs and spare parts consumption. In addition, the hemp rope is prone to slipping and wear in humid and dusty environments, posing a safety hazard and making it difficult to meet the needs of rapid maintenance. Utility Model Content

[0003] The purpose of this utility model is to provide a special clamp for belt maintenance, which can easily clamp various belts and tighten slack belts, saving time and reducing maintenance costs for the replacement and maintenance of slag conveyor belts and coal conveyor belts.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A special clamp for belt maintenance includes two clamping members arranged opposite each other. Each clamping member includes a main flange and an auxiliary flange forming an L shape. The main flange and the auxiliary flange are vertically connected and the external corner of the connection is ground with an arc-shaped rounded corner. A hanging ring extending outward is fixed in the center of one of the main flanges. The main flanges of the two clamping members are overlapped and arranged side by side, and the two main flanges are used to clamp the belt. The two clamping members are detachably locked and fixed based on fasteners.

[0006] Symmetrical circular through holes are provided at both ends of the two main flanges. Bolts that pass through both main flanges are provided in the through holes on the same side. Nuts are fitted on the bolts. The bolts and nuts are fasteners that fix the two clamps.

[0007] The clamping components include a first clamping component and a second clamping component. The first clamping component includes a first main flange and a first secondary flange that are vertically connected, and the second clamping component includes a second main flange and a second secondary flange that are vertically connected.

[0008] The first main flange has symmetrically fixed positioning rods perpendicular to it at both ends of its two edges. The second main flange has through holes that can be movably inserted into the two positioning rods. The positioning rods pass through the through holes and are threaded with nuts.

[0009] The clamping components include a first clamping component and a second clamping component. The first clamping component includes a first main flange and a first secondary flange that are vertically connected, and the second clamping component includes a second main flange and a second secondary flange that are vertically connected.

[0010] The first main flange has symmetrically fixed positioning rods perpendicular to its two ends. The center of the first main flange has an extension plate that protrudes outward. The end of the extension plate is fixed with a large nut. The second main flange has through holes that can be movably inserted with the two positioning rods.

[0011] It also includes a pressure frame, the middle of which is a portal structure. Pressure plates are fixed at both ends of the portal structure. The pressure plates also have through holes for movable insertion with positioning rods. A large bolt passes through the middle of the pressure frame. The large bolt and the large nut are threaded together and are fasteners.

[0012] The hanging ring is either a gate-shaped hanging ring or a circular hanging ring.

[0013] The hanging ring is an irregularly shaped hanging ring, including a connecting part, a constricting part, and an arc part. The width of the connecting part is greater than the diameter of the arc part, and the constricting part is flared.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] By using this tool, the belt can be fixed with a plate clamp, and the belt head that needs to be vulcanized can be easily tightened to the required position using hoists or other lifting tools. This saves costs for belt replacement and maintenance, prevents belt tearing, and shortens the maintenance period. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention.

[0017] Figure 2 This is a split diagram of Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of Embodiment 3 of this utility model.

[0019] Figure 4 This is a bottom view of Embodiment 3 of this utility model.

[0020] Figure 5 This is a component disassembly diagram of Embodiment 3 of this utility model.

[0021] Figure 6 This is a cross-sectional view of the central part of the positioning rod in Embodiment 2 of this utility model.

[0022] The labels shown in the attached diagram:

[0023] 1. Main flange; 2. Secondary flange; 3. Through hole; 4. Bolt; 5. Nut; 6. Hanging ring; 7. First clamp; 8. Second clamp; 9. Positioning rod; 10. Extension plate; 11. Large nut; 12. Pressure frame; 13. Pressure plate; 14. Large bolt; 15. Connecting part; 16. Contraction part; 17. Arc part; 18. First main flange; 19. Second main flange. Detailed Implementation

[0024] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application. Example 1

[0025] This clamp is self-manufactured, using two 600mm long, 50*50 angle irons as clamping components. The clamping components are L-shaped based on the structure of the angle irons. For ease of description, the clamping components are defined as having a main flange 1 and an auxiliary flange 2 that are integrally connected at right angles. In this example, the main flange 1 and the auxiliary flange 2 are of equal length and perpendicular to each other. If angle irons with a long and short side structure are used, the long flange is used as the main flange 1 to contact and clamp the belt, thereby obtaining a larger clamping surface.

[0026] Symmetrical 20mm diameter circular holes are made at the two ends of the main flange 1 of the two angle irons as through holes 3. M16 bolts 4 pass through the through holes 3, and nuts 5 are fitted on the bolts 4. The main flanges 1 of the two angle irons are clamped together by the cooperation of the bolts and nuts.

[0027] The corners of the diagonal clamps are ground into rounded corners to prevent damage to the belt after clamping it.

[0028] A portal-shaped or circular hanging ring 6 is welded to the center of the main flange 1 of one of the clamping components for use with lifting equipment to suspend the belt. The dimensions of the portal-shaped or circular hanging ring 6 need to be determined according to the actual lifting requirements to ensure that the hanging ring 6 is strong enough and easy to hook. The welded joints of the hanging ring 6 need to be reinforced to prevent them from falling off due to excessive force. The overall structure is simple in design, easy to install and disassemble, and suitable for belt suspension requirements under various working conditions.

[0029] In practical use, place the two clamps of this self-made belt clamp on both sides of the belt, clamping it along the width of the belt. Align the through holes 3 on the two main flanges 1, making them concentric circles. Then, tighten the two bolts 4 and nuts 5 onto the two pairs of through holes 3, alternating between tightening the nuts twice to achieve a uniform clamping force on both sides of the belt. Finally, the angle iron is clamped equidistantly onto the belt end that needs vulcanization. Then, use a hand chain hoist to tighten it; this loosens the belt section that needs maintenance, allowing for inspection and maintenance. This clamp is convenient, practical, and inexpensive. Practical application has verified that this clamp not only effectively prevents belt damage but also significantly improves maintenance efficiency, shortens downtime, and reduces overall costs. Its structure is stable, its operation is simple, and it is suitable for various belt maintenance scenarios, especially performing excellently in humid and dusty environments, completely solving many drawbacks of the traditional hemp rope tightening method.

[0030] Furthermore, the fixture is designed with ease of on-site operation in mind, allowing for quick installation and disassembly without the need for complex tools, greatly reducing the workload for workers. In practical applications, its superior performance has earned unanimous praise from the maintenance team, making it an important tool for ensuring smooth production. Example 2

[0031] Based on Example 1, in order to reduce the number of components and simplify installation, the following design is further proposed:

[0032] For ease of subsequent description of different structures, they are defined as first clamp 7 and second clamp 8.

[0033] The first clamp 7 includes a first main flange 18 and a first secondary flange 2 that are vertically connected, and the second clamp 8 includes a second main flange 19 and a second secondary flange 2 that are vertically connected.

[0034] Two symmetrically distributed positioning rods 9 are provided on the first main flange 18. One end of each positioning rod 9 is vertically welded and fixed to the two end edges of the first main flange 18. The positioning rod 9 adopts a screw structure. Specifically, the screw part with the screw head removed can be directly welded to the first main flange 18.

[0035] Two round holes are opened at the two ends of the second main flange 19 to serve as through holes 3, corresponding to the positioning rod 9. The through holes 3 are movably inserted into the positioning rod 9.

[0036] By engaging the nut 5 with the positioning rod 9, the first clamp 7 and the second clamp 8 can be locked.

[0037] In practical operation, there is no need to prepare additional bolts 4. By pre-welding the screw to a clamp and opening a hole in the other clamp, operation is facilitated. In Example 1, when operating the belt clamp, two people are required to cooperate, one to clamp the belt and the other to align the two clamps and attach bolts 4 at both ends. In this example, however, it is only necessary to use a plug-in connector to quickly fit the second main flange 19 onto the first main flange 18, and then tighten it repeatedly with nuts 5. The operation is simplified, reducing the trouble of scattering and managing parts. Example 3

[0038] The clamp in this example takes into account the uniformity of belt clamping and further enhances the focus on preventing damage during belt clamping.

[0039] This example also uses two angle irons cut to a fixed length to obtain clamps. For ease of description of different structures later, they are defined as the first clamp 7 and the second clamp 8.

[0040] The right-angled external corners of the first clamp 7 and the second clamp 8 are both machined into arc-shaped rounded corners to reduce friction on the belt.

[0041] The first clamp 7 includes a first main flange 18 and a first auxiliary flange 2 that are vertically connected. The first main flange 18 is provided with two symmetrically distributed positioning rods 9. One end of the positioning rod 9 is vertically welded and fixed at the two ends of the first main flange 18.

[0042] The second clamp 8 includes a second main flange 19 and a second auxiliary flange 2 that are vertically connected. The second main flange 19 has a through hole 3 corresponding to the positioning rod 9 of the first main flange 18, ensuring precise alignment of the two clamps. This structure ensures quick alignment of the two clamps during installation by pre-welding the positioning rod 9 to the first main flange 18, eliminating the need for bolts 4 and preventing parts from scattering after disassembly, thus improving installation efficiency.

[0043] An extension plate 10 extending outward along the width direction of the first main flange 18 is welded to the center of the first main flange 18. A large nut 11 is welded to the end of the extension plate 10. The extension plate 10 allows for the clamping position of the belt, enabling the belt to be clamped between two clamping members.

[0044] It also includes a pressure frame 12 specifically for pressing the two clamps. The middle of the pressure frame 12 is designed as a gate-shaped structure to facilitate observation and provide space for operation. Pressure plates 13 are fixed at both ends of the gate-shaped structure. Through holes 3 are also passed through the pressure plates 13. The positioning rod 9 passes through the through holes 3 of the second clamp 8 and the pressure plate 13 in sequence, which can quickly position and assemble the second clamp 8 and the pressure frame 12.

[0045] A large bolt 14 is inserted through the middle of the pressure frame 12 and is movably connected to it. The bottom end of the large bolt 14 is threadedly connected to the large nut 11.

[0046] By locking the large bolt 14 and the large nut 11, and through the bridge structure of the pressure frame 12, the pressure is evenly distributed to the pressure plates 13 on both sides, thereby applying balanced pressure to both ends of the second main flange 19 of the second clamping member 8, ensuring that the belt is firmly clamped and avoiding damage caused by uneven force. This design cleverly utilizes the principle of mechanics, simultaneously applying balanced pressure and locking to both ends by tightening the large bolt 14, thus achieving uniform clamping force on the belt. Furthermore, combined with the conversion of the pressure frame 12, a simple splicing operation replaces the through-and-tightening operation of the bolts 4 and nuts 5 at both ends in Embodiment 1, making it simpler and faster, eliminating the need for repeated adjustments to the tightness of the nuts at both ends, and significantly improving work efficiency.

[0047] The hanging ring 6 is welded onto the first main flange 18 or the second main flange 19.

[0048] The hanging ring 6 features an irregular design, including a connecting part 15, a contracting part 16, and an arc-shaped part 17. The diameter of the arc-shaped part 17 is adapted to the hoist hooks used in the workshop, resulting in greater stability after hooking and preventing lateral swaying. The width of the connecting part 15 is greater than the diameter of the arc-shaped part 17, facilitating quick and easy hooking. The contracting part 16 is flared, guiding the hook as it enters the arc-shaped part 17. When this hanging ring 6 is used in conjunction with an electric hoist, it provides improved stability against lateral swaying, facilitating belt maintenance.

[0049] In this example, the belt is placed on the first main flange 18 of the first clamp 7, and then the second main flange 19 of the second clamp 8 is aligned with the positioning rod 9 and quickly assembled with the first clamp 7. The pressure frame 12 is then quickly pressed onto the second main flange 19 via a simple plug-in connection. Finally, the clamping is completed by directly tightening the large bolt 14 in the middle. This method is faster and provides uniform clamping force on the belt, preventing uneven stress on both sides of the belt after subsequent tensioning, which could lead to torsion, tilting, or uneven stress problems during later maintenance, thus improving maintenance quality.

Claims

1. A special clamp for belt maintenance, characterized in that, The device includes two opposing clamps, each clamp comprising a main flange and a secondary flange forming an L-shape. The main flange and the secondary flange are vertically connected, and the external corner of the connection point is rounded. A hanging ring extending outward is fixed in the center of one of the main flanges. The main flanges of the two clamps overlap and are arranged side by side, and the two main flanges are used to clamp a belt. The two clamps are detachably locked and fixed by fasteners.

2. The belt maintenance clamp according to claim 1, characterized in that, Symmetrical circular through holes are provided at both ends of the two main flanges. Bolts that pass through both main flanges are provided in the through holes on the same side. Nuts are fitted on the bolts. The bolts and nuts are fasteners that fix the two clamps.

3. The belt maintenance clamp according to claim 1, characterized in that, The clamping components include a first clamping component and a second clamping component. The first clamping component includes a first main flange and a first secondary flange that are vertically connected, and the second clamping component includes a second main flange and a second secondary flange that are vertically connected. The first main flange has symmetrically fixed positioning rods perpendicular to it at both ends of its two edges. The second main flange has through holes that can be movably inserted into the two positioning rods. The positioning rods pass through the through holes and are threaded with nuts.

4. The belt maintenance clamp according to claim 1, characterized in that, The clamping components include a first clamping component and a second clamping component. The first clamping component includes a first main flange and a first secondary flange that are vertically connected, and the second clamping component includes a second main flange and a second secondary flange that are vertically connected. The first main flange has symmetrically fixed positioning rods perpendicular to its two ends. The center of the first main flange has an extension plate that protrudes outward. The end of the extension plate is fixed with a large nut. The second main flange has through holes that can be movably inserted with the two positioning rods.

5. The belt maintenance clamp according to claim 1, characterized in that, It also includes a pressure frame, the middle of which is a portal structure. Pressure plates are fixed at both ends of the portal structure. The pressure plates also have through holes for movable insertion with positioning rods. A large bolt passes through the middle of the pressure frame. The large bolt and the large nut are threaded together and are fasteners.

6. The belt maintenance clamp according to claim 1, characterized in that, The hanging ring is either a gate-shaped hanging ring or a circular hanging ring.

7. The belt maintenance clamp according to claim 1, characterized in that: The hanging ring is an irregularly shaped hanging ring, including a connecting part, a constricting part, and an arc part. The width of the connecting part is greater than the diameter of the arc part, and the constricting part is flared.

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