Auxiliary retreat-stop device for belt conveyor tensioning wheel shaft

Abstract

This utility model discloses an auxiliary anti-reverse device for tensioning wheel axles of belt conveyors, belonging to the technical field of auxiliary anti-reverse devices for tensioning wheel axles. It includes a base steel plate, with two first fixing plates symmetrically welded to the center of the top surface of the base steel plate. A fixing shaft passes between the two first fixing plates, and a wheel axle is rotatably mounted in the middle section of the fixing shaft. Set screw holes are opened at both ends of the fixing shaft. The base steel plate has an n-shaped cross-section. This utility model, through the cooperation of a vertical plate and a set screw, with the set screw passing through the vertical plate and connecting to the set screw hole of the fixing shaft, facilitates the application of axial clamping force to the fixing shaft, improving the axial limiting stability of the fixing shaft. Ultimately, it solves the problems of existing wheel axles relying solely on interference fits, lacking additional anti-reverse structures and being prone to retraction, traditional devices being complex to install and having poor adaptability, and wheel axle anti-reverse structures being susceptible to failure due to external forces. It improves the reliability of wheel axle fixing, the efficiency and flexibility of device installation, and the durability of the device under harsh working conditions.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary anti-reverse devices for tension wheel shafts, and in particular to an auxiliary anti-reverse device for tension wheel shafts of belt conveyors. Background Technology

[0002] The belt conveyor head of the fully mechanized mining face is equipped with a pulley tensioning device. The reversing wheel axle of the tensioning device uses an interference fit, and the two ends of the axle lack locking clips or buckles, which rust and become ineffective after long-term use. This causes the axle to rotate out of the machine under axial force during the reversing wheel's movement and adjustment, resulting in a flywheel accident. Therefore, it is very important to develop a simple and easy-to-install axle fixing device to prevent the axle from coming out during movement. Thus, improvements are needed to address the above-mentioned problems. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an auxiliary anti-reverse device for the tension wheel shaft of a belt conveyor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an auxiliary anti-reverse device for tensioning wheel shaft of a belt conveyor, comprising a base steel plate, two first fixing plates symmetrically welded to the middle of the top surface of the base steel plate, a fixing shaft passing through the two first fixing plates, a wheel shaft rotatably mounted in the middle section of the fixing shaft, and set screw holes at both ends of the fixing shaft, the base steel plate having an n-shaped cross section, and C-shaped plates symmetrically clamped on both sides by first bolts, a vertical plate fixed to the side of the top surface of the C-shaped plate near the first fixing plate, and a reinforcing rib welded between one side of the vertical plate and the top surface of the C-shaped plate.

[0005] Preferably, a set screw corresponding to the set screw hole is provided on the vertical plate, and screw caps that are screwed to the set screw are welded on the opposite surfaces of the two vertical plates.

[0006] Preferably, a second fixing plate is welded to the bottom surface of the C-shaped plate, and a long screw rod is inserted between the two second fixing plates.

[0007] Preferably, four mating grooves are equally spaced on both sides of the fixed shaft, and a rectangular plate sleeved on the fixed shaft is bolted to the opposite side of the first fixed plate.

[0008] Preferably, the rectangular plate is provided with a mating protrusion corresponding to the mating groove, and a damping block is bolted to the opposite surface of the mating protrusion and the mating groove.

[0009] Preferably, a nut is screwed to one end of the long screw rod, and the nut abuts against the outward side of one of the two second fixing plates.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the vertical plate and the set screw, with the set screw passing through the vertical plate and connecting with the set screw hole of the fixed shaft, facilitates the application of axial clamping force to the fixed shaft, improving the axial limiting stability of the fixed shaft, and thus achieving initial anti-reverse of the wheel axle; furthermore, through the cooperation of the rectangular plate and the fixed shaft, with the rectangular plate sleeved on the fixed shaft and its mating protrusion embedded in the mating groove of the fixed shaft, it facilitates the restriction of the fixed shaft's rotation, improving the anti-rotation effect of the fixed shaft, and thus achieving effective constraint on the rotation of the wheel axle; through the clamp cooperation of the base steel plate and the C-shaped plate, with the C-shaped plate clamped to both sides of the base steel plate by the first bolt, it facilitates quick assembly of the base and side support structure, improving installation convenience, and thus enabling rapid positioning and installation of the device; furthermore, through the cooperation of the second fixed plate and the long screw rod, with the long screw rod passing through two second fixed plates and fixed by nuts, it facilitates adjustment. The spacing of the C-shaped plates is adjusted to accommodate bases of different specifications, improving the adaptability of the device and enabling installation on equipment of different sizes. The mating protrusions and damping blocks work together, with the damping blocks fixed to the opposite surfaces of the mating protrusions and grooves, increasing friction at the mating points and improving the anti-loosening effect of the fixed shaft, thus ensuring stable fixation of the axle under vibration. Furthermore, the welding of reinforcing ribs to the vertical plates and C-shaped plates strengthens the connection between the vertical plates and C-shaped plates, resisting the tightening force applied by the set screw and improving the stability of the support structure, thereby achieving long-term reliable axial positioning. Ultimately, this solves the problems of existing axles relying solely on interference fits, lacking additional anti-reverse structures for easy disengagement, complex installation and poor adaptability of traditional devices, and the susceptibility of the axle anti-reverse structure to failure due to external forces. It improves the reliability of axle fixation, the efficiency and flexibility of device installation, and the durability of the device under harsh working conditions. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a first-view schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a second-view schematic diagram of the overall structure proposed in this utility model; Figure 3 This is a schematic diagram of the overall structure of the rectangular plate proposed in this utility model; Figure 4 This is a schematic diagram of the overall structure of the set screw proposed in this utility model.

[0012] The numbers in the diagram are: 1. Base steel plate; 2. First fixing plate; 3. Fixing shaft; 4. Wheel axle; 5. C-shaped plate; 6. Vertical plate; 7. Reinforcing rib; 8. Set screw; 9. Second fixing plate; 10. Rectangular plate; 11. Butt joint protrusion; 12. Damping block. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Example: See Figures 1 to 4This utility model discloses an auxiliary anti-reverse device for a tensioning wheel axle of a belt conveyor, comprising a base steel plate 1. Two first fixing plates 2 are symmetrically welded to the center of the top surface of the base steel plate 1, and a fixing shaft 3 passes between the two first fixing plates 2. A wheel axle 4 is rotatably mounted in the middle section of the fixing shaft 3, and set screw holes are opened at both ends of the fixing shaft 3. The base steel plate 1 has an n-shaped cross-section, and C-shaped plates 5 are symmetrically clamped on both sides by first bolts. A vertical plate 6 is fixed to the top surface of the C-shaped plate 5 near the first fixing plate 2, and a reinforcing rib 7 is welded between one side of the vertical plate 6 and the top surface of the C-shaped plate 5. The base steel plate 1 is made of Q345 steel plate, which has high yield strength and good impact resistance, providing a stable installation foundation for the device. Its n-shaped cross-section facilitates... The C-shaped plate 5, made of Q345 steel, is secured to the base steel plate 1 via a first bolt clamp. This first bolt is a high-strength hexagonal head bolt, adaptable to the complex stress environment of underground coal mines, ensuring a firm connection between the C-shaped plate 5 and the base steel plate 1, enabling rapid assembly of the side support structure. The first fixing plate 2, made of Q235 steel, offers good machinability and sufficient strength, providing an installation carrier for the fixing shaft 3, made of 45# steel. The fixing shaft 3 undergoes heat treatment to balance hardness and toughness. Its central rotating section features a 20CrMnTi axle 4, which boasts high surface hardness and wear resistance, ensuring normal rotational function. The vertical plate 6, also made of Q235 steel, offers good weldability, providing installation support for the subsequent anti-reverse structure. The reinforcing rib 7 is made of Q235 steel plate, which can disperse the stress at the connection between the vertical plate 6 and the C-shaped plate 5, enhance the connection strength, and prevent structural deformation. This section of the structure realizes the basic installation of the device and the layout of the core components, laying the foundation for the subsequent anti-reverse function. Through the above, the base steel plate 1, the first fixed plate 2, the fixed shaft 3, the C-shaped plate 5, the vertical plate 6, and the reinforcing rib 7 together constitute the basic frame of the device, providing stable structural support for the anti-rotation and anti-reverse function of the wheel axle 4. The vertical plate 6 is equipped with a set screw 8 corresponding to the set screw hole, and the opposite surfaces of the two vertical plates 6 are welded with nuts that are screwed to the set screw 8. The set screw 8 is a hexagonal head set screw, and its head design makes it easy to tighten with a special tool. The screw cap on the vertical plate 6, made of Q235 steel, is screwed in, allowing its end to extend into the set screw hole of the fixed shaft 3, made of 45# steel, and tighten it, applying a stable axial tightening force to the fixed shaft 3 and preventing it from being pulled out by axial force. The screw cap ensures the stable installation of the set screw 8 and avoids loosening during tightening. The above structure achieves axial anti-reverse limiting of the wheel axle 4, making up for the defect of easy failure of traditional interference fit. Through the above, the cooperation between the set screw 8, the vertical plate 6, and the screw cap improves the axial anti-reverse subsystem in the basic frame of the device and enhances the fixing reliability of the wheel axle 4. A second fixing plate 9 is welded to the bottom surface of the C-shaped plate 5, and a long screw tie rod is inserted between the two second fixing plates 9.The second fixing plate 9 is made of Q235 steel plate, with sufficient structural strength, providing installation support for the long screw tie rod. The long screw tie rod is a fully threaded tie rod with high thread density and strong load-bearing capacity. After two second fixing plates 9 are installed, the spacing of the C-shaped plates 5, made of Q345 steel plate, can be finely adjusted by adjusting their length to accommodate the installation requirements of different specifications of base steel plates 1 or wheel axles 4. At the same time, the long screw tie rod can enhance the connection stability of the C-shaped plates 5 on both sides, avoiding structural displacement caused by underground vibration. This section of the structure improves the adaptability and overall stability of the lifting device. Through the above, the cooperation between the second fixing plate 9, the long screw tie rod, and the C-shaped plate 5 optimizes the structural adaptation module in the basic frame of the device, expanding the applicability of the device.

[0015] In this invention, four equidistant mating slots are provided on both sides of the fixed shaft 3. A rectangular plate 10, which is sleeved on the fixed shaft 3, is bolted to the opposite side of the first fixed plate 2. The rectangular plate 10 is made of Q235 steel plate, and its processing precision is easy to control. It is fixed to the first fixed plate 2 made of Q235 steel plate by ordinary fastening bolts and sleeved on the fixed shaft 3 made of 45# steel plate. The installation method is simple and convenient, and it is easy to disassemble and maintain later. The mating slots of the fixed shaft 3 provide a positioning basis for the subsequent anti-rotation structure. The rectangular plate 10 can limit the radial movement of the fixed shaft 3 and help improve the stability of the fixed shaft 3. This section of the structure provides a prerequisite for the anti-rotation of the wheel axle 4 and enhances the installation of the fixed shaft 3. Stability; Through the above, the cooperation between the rectangular plate 10, the first fixed plate 2, and the fixed shaft 3 improves the anti-rotation pre-module in the basic frame of the device, laying the foundation for subsequent precise anti-rotation; The rectangular plate 10 is provided with a corresponding docking protrusion 11, and a damping block 12 is bolted to the opposite surface of the docking protrusion 11 and the docking groove; The docking protrusion 11 is made of 45# steel, which has high hardness and good wear resistance. After being embedded in the docking groove of the fixed shaft 3 made of 45# steel, it directly restricts the rotation of the fixed shaft 3 around its own axis, realizing the anti-rotation constraint of the wheel axle 4; The damping block 12 is made of nitrile rubber, which has good elasticity and a high coefficient of friction, and can effectively increase the friction between the docking protrusion 11 and the docking groove. The friction prevents loosening of the connection due to downhole vibration, while also possessing oil resistance and aging resistance to adapt to the harsh downhole environment. The bolted connection facilitates replacement after wear. This section of the structure reliably prevents the wheel axle 4 from rotating, overcoming the deficiency of traditional devices lacking an anti-rotation structure. Through the above, the cooperation of the docking protrusion 11, damping block 12, rectangular plate 10, and fixed shaft 3 perfects the anti-rotor system in the device's basic frame, ensuring that the wheel axle 4 does not rotate out. A nut is screwed to one end of the long screw rod, and the nut abuts against the outward side of one of the two second fixed plates 9. The nut is made of 304 stainless steel, which has strong corrosion resistance and can prevent loosening in damp and dusty downhole environments. The corrosion-induced jamming is addressed by connecting the long screw rod to the second fixing plate 9, made of Q235 steel plate. The long screw rod is a fully threaded rod, and its length can be locked by tightening the nut. The spacing of the C-shaped plate 5, made of Q345 steel plate, is fixed to prevent the rod from loosening and causing structural displacement during use. The nut makes it easier to adjust the long screw rod, allowing for flexible adjustment according to actual installation needs. This section of the structure ensures reliable locking of the long screw rod, guaranteeing stability after structural adaptation. Through the above, the cooperation between the nut, the long screw rod, and the second fixing plate 9 optimizes the structural locking module in the device's basic frame, ensuring long-term stable operation of the device.

[0016] Working principle: When using this utility model, firstly, the base steel plate 1 is placed in the designated position. The base steel plate 1 has an n-shaped cross-section, and its two sides are connected to the C-shaped plate 5 by first bolts to form a clamping fit. By tightening the first bolts, the C-shaped plate 5 and the base steel plate 1 are firmly connected, completing the assembly of the side support structure of the device. A vertical plate 6 is fixedly connected to the top surface of the C-shaped plate 5 near the first fixing plate 2. The reinforcing rib 7 welded between the vertical plate 6 and the top surface of the C-shaped plate 5 can enhance the connection strength between the two and prevent the vertical plate 6 from deforming when the tightening force is applied later, thus providing stability for the subsequent limiting of the wheel axle 4. Support; next, anti-rotation and axial anti-reverse devices are installed on the wheel axle 4. A fixed shaft 3 is inserted between two first fixed plates 2 symmetrically welded to the top center of the base steel plate 1. A wheel axle 4 is rotatably mounted in the middle of the fixed shaft 3. First, the rectangular plate 10 is fixed to the opposite sides of the first fixed plate 2 with bolts, so that the rectangular plate 10 is fitted onto both ends of the fixed shaft 3. At the same time, it is ensured that the mating protrusions 11 on the rectangular plate 10 are embedded in the mating grooves on the periphery of the fixed shaft 3. The damping blocks 12 on the opposite surfaces of the mating protrusions 11 and the mating grooves can increase the contact friction between the two, restricting the rotation of the fixed shaft 3 around its own axis, thus achieving... Wheel axle 4 is constrained against rotation; then the set screw 8 on the vertical plate 6 is rotated. The set screw 8 is screwed into the screw cap on the opposite side of the vertical plate 6. As the set screw 8 rotates, its end gradually extends into the set screw holes at both ends of the fixed shaft 3 and tightens the fixed shaft 3, applying a continuous axial tightening force to the fixed shaft 3 to prevent the fixed shaft 3 from moving axially under axial force, thus forming the axial anti-reverse limit of wheel axle 4; finally, structural adaptation and reinforcement are carried out. A long screw tie rod is inserted between the two second fixed plates 9 welded to the bottom surface of the C-shaped plate 5. A nut is screwed to one end of the long screw tie rod. By adjusting the screw... The contact state between the mother and the second fixed plate 9 allows for fine adjustment of the distance between the two C-shaped plates 5, enabling the device to adapt to different specifications of base steel plates 1 or wheel axle 4 installation requirements. At the same time, the cooperation between the long screw tie rod and the second fixed plate 9 further enhances the connection stability of the C-shaped plates 5 on both sides, preventing the device from shifting laterally in the downhole vibration environment, ensuring the overall structure's reliable limiting effect on wheel axle 4. Finally, through the dual constraints of anti-rotation and axial anti-reverse, the wheel axle 4 is prevented from rotating out during the adjustment of the directional wheel, avoiding flywheel accidents. At this point, the device is in use.

[0017] 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 equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An auxiliary anti-reverse device for the tension wheel axle of a belt conveyor, comprising a base steel plate (1), characterized in that: Two first fixing plates (2) are symmetrically welded to the middle of the top surface of the base steel plate (1). A fixing shaft (3) is passed between the two first fixing plates (2). A wheel axle (4) is rotatably provided in the middle section of the fixing shaft (3). The fixing shaft (3) has set screw holes at both ends. The base steel plate (1) has an n-shaped cross section, and C-shaped plates (5) are symmetrically provided on both sides by first bolt clamps. A vertical plate (6) is fixed to the side of the top surface of the C-shaped plate (5) close to the first fixing plate (2). A reinforcing rib (7) is welded between one side of the vertical plate (6) and the top surface of the C-shaped plate (5).

2. The auxiliary anti-reverse device for the tension wheel shaft of a belt conveyor according to claim 1, characterized in that: The vertical plate (6) is provided with a set screw (8) corresponding to the set screw hole, and the two vertical plates (6) are welded with screw caps that are screwed to the set screw (8) on their opposite surfaces.

3. The auxiliary anti-reverse device for the tension wheel shaft of a belt conveyor according to claim 2, characterized in that: The bottom surface of the C-shaped plate (5) is welded with a second fixing plate (9), and a long screw rod is inserted between the two second fixing plates (9).

4. The auxiliary anti-reverse device for the tension wheel shaft of a belt conveyor according to claim 3, characterized in that: The fixed shaft (3) has four equidistant joint grooves on both sides of its two ends, and a rectangular plate (10) is bolted to the opposite side of the first fixed plate (2) and sleeved on the fixed shaft (3).

5. An auxiliary anti-reverse device for the tension wheel shaft of a belt conveyor according to claim 4, characterized in that: The rectangular plate (10) is provided with a docking protrusion (11) corresponding to the docking groove, and a damping block (12) is bolted to the opposite surface of the docking protrusion (11) and the docking groove.

6. The auxiliary anti-reverse device for the tension wheel shaft of a belt conveyor according to claim 5, characterized in that: One end of the long screw rod is screwed with a nut, and the nut abuts against the outward side of one of the two second fixing plates (9).

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