A kind of roller hook structure applied to scalable, portable belt conveyor

Abstract

The utility model belongs to the technical field of the key components of belt conveyor, concretely is a kind of the roller hook structure applied to telescopic, displaceable belt conveyor, including hook body and pull rivet bolt, and the pull rivet bolt rivets on the hook body.The utility model realizes low cost, high reliability belt conveyor roller hook by structure optimization, solves the problems, such as the appearance quality of traditional welding structure is poor, processing cost is high, connection strength is insufficient and installation is inconvenient etc.

Description

Technical Field

[0001] This utility model relates to the technical field of key components of belt conveyors; specifically, this utility model relates to a roller hook structure applied to a telescopic, movable belt conveyor. Background Technology

[0002] In industrial sectors such as ports, power plants, and mines, belt conveyors are core equipment for the continuous transportation of bulk materials, and the installation reliability of their idler roller assemblies directly affects the operating efficiency of the conveying system. Traditional idler roller hooks generally adopt a structure where round steel is welded to the hook body, which has the following technical defects: (1) The welding process requires high temperature heating, which leads to problems such as coarse grains and reduced hardness in the heat-affected zone of the base material. Defects such as porosity and slag inclusion are prone to occur at the weld joint, and cracking and falling off frequently occur during service. (2) Round steel needs to be cut and bent separately, and grinding is required after welding. The processing procedures are complicated, the material utilization rate is only 60%-70%, and the processing cost of a single hook is about 15-20 yuan. (3) The welding process generates dust pollution, and the subsequent grinding process increases energy consumption, which does not meet the requirements of green manufacturing; (4) The dimensional accuracy of the welded structure depends on manual operation. When it is matched with the sleeve adjustment mechanism, gap deviation is easy to occur, which makes it difficult to adjust the idler roller group and the installation efficiency is low (the installation time of a single group is about 5-8 minutes).

[0003] With the widespread application of extendable belt conveyors in underground mines and mobile unloading applications, higher requirements have been placed on the lightweight, high reliability, and rapid installation performance of idler hooks. There is an urgent need to design a new connection structure to solve the above problems. Utility Model Content

[0004] In view of this, the present invention provides a roller hook structure for use in telescopic and movable belt conveyors, thereby solving or at least alleviating the problems of poor appearance quality, high processing cost, insufficient connection strength and inconvenient installation of welded structures in the prior art.

[0005] To achieve the aforementioned objective, this utility model provides a roller hook structure for a telescopic, movable belt conveyor, comprising a hook body and a rivet bolt, wherein the rivet bolt is riveted to the hook body.

[0006] Preferably, the hook body is provided with a rivet hole, and the rivet bolt is riveted into the rivet hole.

[0007] Preferably, one end of the hook body connected to the idler roller is provided with a pin hole, and the other end of the hook body connected to the idler roller is provided with a limiting wheel set that can swing around the pin hole as the center, and the limiting wheel set is used to roll against the end face of the idler roller.

[0008] Preferably, the limiting wheel assembly includes a rotating sleeve and rollers. The rotating sleeve is rotatably mounted on the hook body and can swing around the pin hole. The rotating sleeve is used to fit onto the pin post at the end of the idler roller. One roller is provided at each of the upper and lower ends of the rotating sleeve.

[0009] Preferably, the upper and lower ends of the rotating sleeve are slidably provided with sliding plates, the roller is rotatably mounted on the inner end of the sliding plate, and the rotating sleeve is provided with an adjusting bolt, which is threadedly engaged with the sliding plate to adjust the inner and outer positions of the roller.

[0010] Compared with the prior art, the present invention has at least the following beneficial effects: (1) Cost advantage: The round steel welding process is eliminated and the stamping + riveting process is adopted, which shortens the processing time by 40%, reduces the cost of a single set of genuine products, and increases the material utilization rate by 30%; (2) Performance improvement: The riveted structure avoids the heat effect of welding, improves the connection strength, extends the fatigue life, and the surface roughness requirement of Ra≤12.5μm can be achieved without additional treatment; (3) Easy installation: The precise fit between the rivet nut and the sleeve enables the quick positioning of the roller group, shortens the installation time of a single group, and can achieve fine adjustment of ±5mm by rotating the sleeve during the adjustment operation; (4) Environmental characteristics: No welding fume emissions, reducing energy consumption in the grinding process, and meeting the requirements of GB / T36132-2018 "General Rules for Life Cycle Assessment of Green Manufacturing Machinery Products". Attached Figure Description

[0011] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 3 This is an exploded view of Embodiment 2 of this utility model.

[0012] Reference numerals in the attached diagram: 1-Hook body; 2-Rivet bolt; 3-Pin hole; 4-Swivel sleeve; 5-Roller; 6-Sliding plate; 7-Adjusting bolt. Detailed Implementation

[0013] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0014] Example 1, as Figure 1 As shown, this embodiment provides a roller hook structure for a telescopic, movable belt conveyor, including a hook body 1 and a rivet bolt 2, with the rivet bolt riveted to the hook body 1.

[0015] In a relatively specific embodiment, the hook body 1 is provided with a rivet hole, and the rivet bolt 2 is riveted into the rivet hole.

[0016] Specifically, the hook body 1 is stamped and formed. The geometric dimensions of the hook body 1 (including hook length, bending angle, and mounting hole spacing) and the specifications of the rivet nut (including thread diameter, nut length, and riveting section height) are all standardized according to the belt conveyor's bandwidth (B=500-2000mm) and conveying capacity (Q=100-5000t / h).

[0017] The hook body 1 is made of Q235B or 6061 aluminum alloy sheet with a thickness of 3-8mm. It is integrally formed by progressive die stamping process and includes a load-bearing hook part, a mounting base and a middle transition bending area. The mounting base is pre-set with a stepped riveting hole that matches the rivet nut. The hole diameter is 0.2-0.3mm larger than the outer diameter of the rivet nut to form a suitable interference fit space.

[0018] The connection between the rivet nut and the hook body 1 is a weld-free riveting method. A hydraulic riveting machine or pneumatic riveting gun applies an axial tensile force of 2-5 tons, causing the riveting section of the rivet nut to undergo plastic deformation, forming an interference fit locking structure with the riveting hole. The rivet is made of carbon steel or stainless steel and has a threaded connection section and a bottom riveting section. The riveting section is inserted into the riveting hole of the hook body 1 using a special riveting equipment, and an axial tensile force is applied to cause the riveting section to expand and deform, forming a gapless locking with the hook body 1.

[0019] The effective length L of the rivet nut satisfies L = sleeve internal thread depth - (3-5) mm. This length parameter ensures that when the idler roller assembly is installed, the end of the rivet nut and the sleeve adjustment mechanism form a pre-tight fit of 1-2 turns, achieving a ±5mm adjustment stroke.

[0020] The riveted structure has a pull-out resistance of ≥8kN and a shear resistance of ≥15kN, which is significantly better than the traditional welded structure with a pull-out resistance of 5kN and a shear resistance of 10kN. Moreover, the surface roughness Ra≤12.5μm meets the corrosion resistance requirements in the dusty environment of the mine.

[0021] The stamping process of the hook body 1 adopts a multi-station progressive die, which completes the hook body forming, bending and punching processes in one stamping, and the material utilization rate is increased to more than 90%. The length parameters of the rivet nut are designed according to the internal thread depth of the roller group sleeve adjustment mechanism to ensure an effective engagement length of 15-20mm during installation, which meets the adjustment range of ±10mm.

[0022] By riveting the rivet bolts 2 to the hook body 1, the traditional welding process is replaced, which not only shortens the processing time but also improves material utilization. At the same time, riveting effectively avoids the heat-affected zone of welding, increasing connection strength and fatigue resistance. Furthermore, the precise fit between the rivet nut and the sleeve enables rapid positioning of the idler roller assembly, and precise adjustment can be achieved by rotating the sleeve.

[0023] Application Example 1: Suitable for mining belt conveyors with a bandwidth of 800mm.

[0024] Hook body 1 design: 5mm thick Q235B steel plate is selected and formed by progressive die stamping. The opening width of the supporting hook part is 50mm. The mounting base is provided with 2 φ12mm riveting holes with a hole spacing of 80mm. The bending angle of the transition bending area is 135°.

[0025] Rivet nut selection: M10×25mm carbon steel rivet nut, threaded connection section length 15mm, riveting section length 10mm, outer diameter φ11.8mm, forming a 0.2mm interference fit with the body riveting hole.

[0026] Processing technology: Stamping process: The steel plate is fed into the high-speed punch press, and the hook body is stamped, bent and drilled in sequence through a 3-station progressive die. The processing time for a single piece is 15 seconds. Riveting process: Using a ZYM-50 hydraulic riveting machine, insert the rivet nut into the riveting hole of the body and apply a 3-ton pulling force to expand and lock the riveting section, forming a firm connection.

[0027] Application Example 2: Suitable for port belt conveyors with a bandwidth of 1200mm.

[0028] Material upgrade: The hook body 1 is made of 6061-T6 aluminum alloy plate with a thickness of 4mm, which is 40% lighter than carbon steel and meets the corrosion resistance requirements of the humid port environment; Structural optimization: The rivet nut is made of stainless steel and is designed to be 30mm long. It is matched with the 35mm internal thread depth of the sleeve and has a 5mm adjustment margin to accommodate frequent position adjustments of the moving conveyor. Test data: According to third-party testing, the pull-out force of the riveted structure is 9.2kN, the shear force is 16.5kN, and there is no rust after 1000 hours of salt spray testing. All performance indicators are better than the industry standard.

[0029] Example 2, as Figure 2 and Figure 3 As shown, the hook body 1 is provided with a pin hole 3 at one end connected to the idler roller, and a limiting wheel set that can swing around the pin hole 3 at the other end of the hook body 1 is provided with a limiting wheel set that is used to abut against the end face of the idler roller and roll.

[0030] By setting up limit wheel sets, axial constraints are formed on the ends of the idler rollers, preventing the idler rollers from moving laterally during operation due to uneven belt tension or vibration, reducing the risk of belt misalignment. The supporting effect of the limit wheel sets can suppress the eccentric sway of the idler rollers and avoid resonance amplification of the oscillation effect.

[0031] In this embodiment, the limiting wheel assembly includes a rotating sleeve 4 and a roller 5. The rotating sleeve 4 is rotatably mounted on the hook body 1 and can swing around the pin hole 3. The rotating sleeve 4 is used to be sleeved on the pin column at the end of the idler roller. One roller 5 is provided at each of the upper and lower ends of the rotating sleeve 4.

[0032] By mounting the rotating sleeve 4 on the pin at the end of the idler roller, the rotating sleeve 4 can swing synchronously with the idler roller, thereby ensuring that the rotating sleeve 4 and the idler roller are always coaxial, thus ensuring that the roller 5 can more stably support and limit the idler roller.

[0033] Sliding plates 6 are slidably mounted on both the upper and lower ends of the rotating sleeve 4. Rollers 5 are rotatably mounted on the inner end of the sliding plates 6. Adjusting bolts 7 are provided on the rotating sleeve 4. The adjusting bolts 7 are threadedly engaged with the sliding plates 6 and are used to adjust the inner and outer positions of the rollers 5. By rotating the adjusting bolts 7, the rollers 5 can be adjusted along the axial direction of the idler roller so that the rollers 5 are supported at the end of the idler roller.

[0034] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A roller hook structure for use in a retractable, movable belt conveyor, characterized in that, It includes a hook body (1) and a rivet bolt (2), and the rivet bolt (2) is riveted to the hook body (1).

2. The idler hook structure for a retractable, movable belt conveyor as described in claim 1, characterized in that, The hook body (1) is provided with a rivet hole, and the rivet bolt (2) is riveted into the rivet hole.

3. The idler hook structure for a retractable, movable belt conveyor as described in claim 1, characterized in that, The hook body (1) is provided with a pin hole (3) at one end connected to the roller, and a limiting wheel set is provided at the other end of the hook body (1) connected to the roller, which can swing around the pin hole (3) as the center, and the limiting wheel set is used to roll against the end face of the roller.

4. The idler hook structure for a retractable, movable belt conveyor as described in claim 3, characterized in that, The limiting wheel set includes a rotating sleeve (4) and a roller (5). The rotating sleeve (4) is rotatably mounted on the hook body (1) and can swing around the pin hole (3) as the center. The rotating sleeve (4) is used to be sleeved on the pin column at the end of the roller. One roller (5) is provided at each of the upper and lower ends of the rotating sleeve (4).

5. The idler hook structure for a retractable, movable belt conveyor as described in claim 4, characterized in that, The upper and lower ends of the rotating sleeve (4) are slidably provided with sliding plates (6), and the roller (5) is rotatably installed on the inner end of the sliding plate (6). The rotating sleeve (4) is provided with an adjusting bolt (7), which is threadedly engaged with the sliding plate (6) to adjust the inner and outer positions of the roller (5).

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