Counter weight anti-top-rushing tensioning system of belt conveyor

Abstract

The utility model belongs to the technical field of belt conveyors, and relates to a belt conveyor heavy hammer top-rushing prevention tensioning system which comprises a tensioning tower, a heavy hammer box body, a rope wheel assembly, a winch, a brake unit and a tensioning rope, and a lifting channel is formed in the tensioning tower; the heavy hammer box body is movably arranged in the lifting channel; the rope wheel assembly is connected to the tensioning tower and the heavy hammer box body; the winch and the brake unit are arranged on the two side edges of the tensioning tower respectively. One end of the tension rope is wound on a winding drum of the winch; the other end of the tensioning rope is sequentially wound around the rope wheel assembly and the braking unit and then connected with a steel beam arranged above the tensioning tower. After the structure is adopted, the device has the beneficial effects that the brake is quickly clung to the brake rope wheel, and the phenomenon of top rushing is avoided due to short braking time, high response speed and short ascending distance of the heavy hammer box body.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyors, specifically, it relates to a counterweight anti-impact tensioning system for belt conveyors. Background Technology

[0002] Belt conveyors, as a highly efficient and widely used material conveying equipment, play an indispensable role in many industrial fields such as metallurgy and mining. Their working principle is based on friction drive, enabling continuous and smooth material transport. To ensure that the drive drum can effectively perform friction transmission, belt conveyors must be equipped with a specialized tensioning device. This device applies the necessary preload to the conveyor belt, thereby ensuring its stable operation.

[0003] In current belt conveyor designs, the tail brake is commonly used as the primary braking method. This method has a significant drawback: a relatively long braking time. During normal operation, if a sudden power outage or machine failure occurs, the tail brake's response speed may not be able to quickly match the conveyor belt's inertial motion, triggering a series of chain reactions.

[0004] Specifically, when a belt conveyor suddenly stops due to a malfunction, the high-tension section of the belt, due to inertia, will rapidly pull on the low-tension section. This rapid change in tension often causes the counterweight box in the counterweight tensioning device to quickly overshoot. This overshoot not only causes severe impact damage to the equipment structure but may also trigger a major safety accident, posing a serious threat to the safety of personnel and equipment.

[0005] Furthermore, due to untimely braking and uneven tension distribution, belt overlap may occur. Belt overlap means that parts of the conveyor belt overlap, which not only seriously affects the normal transport of materials but also leads to accelerated localized wear of the conveyor belt, thereby reducing its service life. Therefore, improvements are necessary. Utility Model Content

[0006] To address the aforementioned problems in the prior art, this utility model provides a counterweight anti-impact tensioning system for belt conveyors.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] As one aspect of this utility model, a counterweight anti-impact tensioning system for a belt conveyor is proposed, which includes: a tensioning tower, a counterweight housing, a rope pulley assembly, a winch, a braking unit, and a tensioning rope. A lifting channel is formed inside the tensioning tower; the counterweight housing is movably disposed within the lifting channel.

[0009] The rope pulley assembly is connected to the tensioning tower and the counterweight box; the winch and the braking unit are respectively located on both sides of the tensioning tower; one end of the tensioning rope is wound around the drum of the winch; the other end of the tensioning rope is wound around the rope pulley assembly and the braking unit in sequence, and then connected to the steel beam located above the tensioning tower.

[0010] According to this utility model, the rope pulley assembly includes a first rope pulley, a second rope pulley, a third rope pulley, a fourth rope pulley, and a fifth rope pulley. The first rope pulley, the second rope pulley, and the third rope pulley are rotatably connected to the top of the tensioning tower via rope pulley supports. The first rope pulley, the second rope pulley, and the third rope pulley are spaced apart. The fourth rope pulley and the fifth rope pulley are rotatably connected to the counterweight box via rope pulley supports, and the fourth rope pulley and the fifth rope pulley are spaced apart.

[0011] According to this utility model, the diameters of the first rope wheel, the second rope wheel, the third rope wheel, the fourth rope wheel, and the fifth rope wheel are the same.

[0012] According to this utility model, the centers of the first rope wheel, the second rope wheel, and the third rope wheel are on the same horizontal line.

[0013] According to this utility model, the center of the fourth rope wheel and the center of the fifth rope wheel are on the same horizontal line.

[0014] According to this utility model, the braking unit includes a braking base, a brake connected to the braking base, a brake sheave and a redirecting sheave rotatably connected to the braking base, the brake sheave and the redirecting sheave being spaced apart; the redirecting sheave is located above the brake sheave; the brake cooperates with the brake sheave.

[0015] According to this utility model, the diameter of the redirecting rope wheel is smaller than the diameter of the braking rope wheel.

[0016] According to this utility model, the center of the redirecting rope sheave is located to the left of the center of the braking rope sheave.

[0017] According to this utility model, the lifting channel is provided with symmetrically arranged guide members, and the side of the counterweight box is provided with a sliding groove that cooperates with the guide members.

[0018] The beneficial effects of this utility model's anti-overshoot tensioning system for belt conveyors are specifically reflected in the following aspects: It has a simple structure, achieving the raising or lowering of the weight box through the cooperation of the rope wheel assembly, winch, braking unit, and tension rope; the redirecting rope wheel, braking rope wheel, and brake are assembled on the brake base, and the brake quickly engages with the braking rope wheel, while the redirecting rope wheel pushes the tension rope outward. Due to the short braking time and fast response speed, the weight box rises a relatively short distance, preventing overshoot. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0020] Figure 1 This is a schematic diagram of the anti-impact tensioning system for the belt conveyor of this utility model;

[0021] Figure 2 This is an exploded view of the structure of the anti-impact tensioning system for the belt conveyor of this utility model;

[0022] Figure 3 This is a schematic diagram of the braking unit of this utility model;

[0023] Figure 4 This is an exploded view of the braking unit of this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] One embodiment of this application provides a counterweight anti-impact tensioning system for a belt conveyor, such as... Figures 1-4 As shown, it includes: a tension tower 1, a counterweight housing 2, a rope pulley assembly 3, a winch 4, a braking unit 5, and a tension rope 6. The tension tower 1 is assembled from several steel frames, and a lifting channel is formed inside the tension tower 1. The counterweight housing 2 is movably disposed within the lifting channel. The lifting channel is provided with symmetrically arranged guide members 12, and the side of the counterweight housing 2 is provided with a sliding groove 21 that cooperates with the guide members 12. Through the cooperation of the guide members 12 and the sliding groove 21, the vertical movement of the counterweight housing 2 within the lifting channel is more stable.

[0026] The rope pulley assembly 3 is connected to the tension tower 1 and the counterweight housing 2; the structure of the winch 4 is existing technology and will not be described in detail here; the winch 4 and the braking unit 5 are respectively located on both sides of the tension tower 1; one end of the tension rope 6 is wound around the drum of the winch 4; the other end of the tension rope 6 is wound around the rope pulley assembly 3 and the braking unit 5 in sequence, and then connected to the steel beam located above the tension tower 1; through the operation of the winch 4, the tension rope 6 is pulled, so that the counterweight housing 2 moves up and down in the lifting channel under the action of the rope pulley assembly 3.

[0027] In one embodiment, such as Figure 1 As shown, the rope pulley assembly 3 includes a first rope pulley 31, a second rope pulley 32, a third rope pulley 33, a fourth rope pulley 34, and a fifth rope pulley 35. The first rope pulley 31, the second rope pulley 32, and the third rope pulley 33 are rotatably connected to the top of the tensioning tower 1 via rope pulley supports. The first rope pulley 31, the second rope pulley 32, and the third rope pulley 33 are spaced apart. The fourth rope pulley 34 and the fifth rope pulley 35 are rotatably connected to the counterweight box 2 via rope pulley supports, and are spaced apart. The diameters of the first rope pulley 31, the second rope pulley 32, the third rope pulley 33, the fourth rope pulley 34, and the fifth rope pulley 35 are the same. The design of the rope pulleys makes tensioning easier.

[0028] Furthermore, the centers of the first sheave 31, the second sheave 32, and the third sheave 33 are on the same horizontal line; the centers of the fourth sheave 34 and the fifth sheave 35 are on the same horizontal line.

[0029] In one embodiment, such as Figures 1-4 As shown, the braking unit 5 includes a braking base 51, on which a brake 52 is connected. A brake pulley 53 and a redirecting pulley 54 are rotatably connected to the braking base 51, and the brake pulley 53 and the redirecting pulley 54 are spaced apart. The redirecting pulley 54 is located above the brake pulley 53. The diameter of the redirecting pulley 54 is smaller than the diameter of the brake pulley 53. The brake 52 cooperates with the brake pulley 53, and the brake 52 brakes the brake pulley 53. It should be noted that the structure of the brake 52 is prior art and will not be described in detail here. The center of the redirecting pulley 54 is located to the left of the center of the brake pulley 53.

[0030] One end of the tension rope 6 is wound around the drum of the winch 4; the other end of the tension rope 6 is sequentially wound around the grooves of the first sheave 31, the fourth sheave 34, the second sheave 32, the fifth sheave 35, the third sheave 33, and the brake sheave 53, and then connected to the steel beam; wherein, the tension rope 6 located inside the groove of the brake sheave 53 cooperates with the groove of the redirecting sheave 54, and the redirecting sheave 54 squeezes the tension rope 6 outward.

[0031] In summary, this application assembles the redirecting pulley 54, the braking pulley 53, and the brake 52 onto the brake base 51. The brake 52 quickly presses against the braking pulley 53, and the redirecting pulley 54 pushes the tension rope 6 outward. Due to the short braking time and fast reaction speed, the distance the counterweight box 2 rises is relatively short, thus avoiding the phenomenon of overshooting.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A counterweight anti-impact tensioning system for a belt conveyor, characterized in that, It includes: The components include a tension tower, a counterweight housing, a rope pulley assembly, a winch, a braking unit, and a tension rope, with a lifting channel formed inside the tension tower. The counterweight housing is movably mounted within the lifting channel; The rope pulley assembly is connected to the tensioning tower and the counterweight box; the winch and the braking unit are respectively located on both sides of the tensioning tower; one end of the tensioning rope is wound around the drum of the winch; the other end of the tensioning rope is wound around the rope pulley assembly and the braking unit in sequence, and then connected to the steel beam located above the tensioning tower.

2. The anti-impact tensioning system for belt conveyors as described in claim 1, characterized in that, The sheave assembly includes a first sheave, a second sheave, a third sheave, a fourth sheave, and a fifth sheave. The first sheave, the second sheave, and the third sheave are rotatably connected to the top of the tension tower via sheave supports. The first sheave, the second sheave, and the third sheave are spaced apart. The fourth sheave and the fifth sheave are rotatably connected to the counterweight box via sheave supports, and the fourth sheave and the fifth sheave are spaced apart.

3. The anti-impact tensioning system for belt conveyors as described in claim 2, characterized in that, The diameters of the first, second, third, fourth, and fifth rope pulleys are the same.

4. The anti-impact tensioning system for belt conveyors as described in claim 3, characterized in that, The centers of the first rope sheave, the second rope sheave, and the third rope sheave are on the same horizontal line.

5. The anti-impact tensioning system for belt conveyors as described in claim 4, characterized in that, The centers of the fourth and fifth rope pulleys are on the same horizontal line.

6. The anti-impact tensioning system for belt conveyors as described in claim 1, characterized in that, The braking unit includes a braking base, on which a brake is connected. A brake pulley and a redirecting pulley are rotatably connected to the braking base, and the brake pulley and the redirecting pulley are spaced apart. The redirecting pulley is located above the brake pulley. The brake cooperates with the brake pulley.

7. The anti-impact tensioning system for belt conveyors as described in claim 6, characterized in that, The diameter of the redirecting sheave is smaller than the diameter of the braking sheave.

8. The anti-impact tensioning system for belt conveyors as described in claim 7, characterized in that, The center of the redirecting sheave is located to the left of the center of the braking sheave.

9. The anti-impact tensioning system for belt conveyors as described in claim 1, characterized in that, The lifting channel is equipped with symmetrically arranged guide members, and the side of the counterweight box is provided with a sliding groove that cooperates with the guide members.

Images