A spiral tensioning device for a belt conveyor tail

Abstract

The utility model belongs to belt conveyor equipment technical field relates to a spiral tensioning device for belt conveyor tail, including mounting support, the guide slot of mounting support is provided with the slider bearing in the symmetry, slider bearing fixedly connects the two sides pivot of the change direction cylinder respectively, slider bearing is hinged T type thread screw rod end portion through fastener no.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyor equipment, specifically relating to a spiral tensioning device for the tail end of a belt conveyor. Background Technology

[0002] The screw tensioning device at the tail of the belt conveyor is a component installed at the tail of the belt conveyor to ensure that the conveyor belt and the drive drum generate friction to prevent the conveyor belt from slipping. Currently, the screw tensioning devices used in belt conveyors are relatively complex to install, and the conventional threads will become damaged after a long period of use, making it impossible to adjust the conveyor belt.

[0003] Therefore, a relatively durable and easy-to-install spiral tensioning device is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a spiral tensioning device for the tail end of a belt conveyor, which is easy to assemble and disassemble, has a long service life, and can more effectively achieve the tensioning function.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a spiral tensioning device for the tail end of a belt conveyor, including a mounting bracket. Sliding bearings are symmetrically arranged in the guide groove of the mounting bracket. The sliding bearings are respectively fixedly connected to the rotating shafts on both sides of the redirecting roller. The sliding bearings are hinged to the end of a T-shaped threaded screw through a fastener one. A fixing plate is fitted on the T-shaped threaded screw. The fixing plate is fixedly connected to the mounting bracket through a fastener two. A T-shaped threaded nut is provided on the T-shaped threaded screw. The T-shaped threaded nut is located outside the fixing plate.

[0006] Preferably, the thread of the T-type threaded screw is a trapezoidal thread or a sawtooth thread.

[0007] Preferably, the slider bearing is a rolling bearing with an outer sliding sleeve, and the outer diameter of the slider bearing is clearance-fitted with the guide groove of the mounting bracket.

[0008] Preferably, the fixing plate is provided with a through hole that is clearance-fitted with the T-shaped threaded screw.

[0009] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0010] 1. This utility model has a simple structure and is easy to assemble and disassemble. Moreover, the adjusting screw adopts a high-strength T-type thread, which greatly increases the service life of the screw.

[0011] 2. This utility model is easy to assemble and disassemble, has a long service life, and can more effectively achieve the tensioning function. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a front view of a spiral tensioning device for the tail end of a belt conveyor according to an embodiment;

[0014] Figure 2 This is a top view of a spiral tensioning device at the tail end of a belt conveyor according to an embodiment;

[0015] In the above figures, 1. redirecting roller; 2. slider bearing; 3. mounting bracket; 4. T-shaped threaded screw; 5. fixing plate; 6. T-shaped threaded nut; 71. fastener two; 72. fastener one. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1, as Figure 1-2 As shown, a screw tensioning device for the tail end of a belt conveyor includes a mounting bracket 3. Sliding bearings 2 are symmetrically arranged within the guide groove of the mounting bracket 3. The mounting bracket 3 is the basic structure of the device, fixedly mounted on the tail end frame of the belt conveyor. The guide groove on the mounting bracket 3 provides a precise linear motion trajectory for the sliding bearings 2. The mounting bracket 3 is mainly used for the sliding of the sliding bearings 2 in a fixed direction, while the T-shaped threaded screw 4 is fixed using fastener 72 and a fixing plate 5.

[0019] The slider bearing 2 is fixedly connected to the rotating shafts on both sides of the redirecting roller 1. The slider bearing 2 is hinged to the end of the T-shaped threaded screw 4 via fastener 72. A fixing plate 5 is fitted on the T-shaped threaded screw 4. The fixing plate 5 is fixedly connected to the mounting bracket 3 via fastener 71. The fixing plate 5 has a simple and reliable structure, is easy to manufacture and install, and is connected via fastener 71, which facilitates disassembly and maintenance. Fasteners 72 and 71 ensure a reliable connection, while also being detachable, easy to maintain and replace.

[0020] A T-shaped threaded nut 6 is installed on the T-shaped threaded screw 4. The T-shaped threaded nut 6 is located on the outside of the fixed plate 5. The T-shaped threaded nut 6 cooperates with the T-shaped threaded screw 4 and can be adjusted using standard tools such as wrenches. The T-shaped threaded nut 6 is tightened to maintain tension. The slider bearing 2 is fixedly connected to the rotating shafts on both sides of the redirecting roller 1. The slider bearing 2 transitions between the redirecting roller 1 and the T-shaped threaded screw 4. The outer diameter of the slider bearing 2 slides in the guide groove of the mounting bracket 3, converting the rotational motion of the T-shaped threaded screw 4 into its own linear motion in the guide groove, thereby driving the redirecting roller 1 to move. The T-shaped threaded screw 4 is used to adjust the position of the redirecting roller 1, thereby adjusting the tension of the conveyor belt on the belt conveyor.

[0021] The specific design of the aforementioned key components will be discussed in detail below:

[0022] The T-type threaded screw 4 has either a trapezoidal thread or a sawtooth thread. The trapezoidal thread has an isosceles trapezoidal profile with a thick root and shallow groove, significantly increasing the root cross-sectional area and contact area, enabling it to withstand greater axial tensile, compressive, and shear forces, and reducing the likelihood of shear fracture or plastic deformation. The sawtooth thread has an asymmetrical profile with a smaller working face angle and a larger non-working face angle, concentrating almost all of its load-bearing capacity on a high-strength, near-vertical working surface. This results in extremely high efficiency when subjected to large unidirectional tensile forces, giving it a superior load-bearing capacity compared to the trapezoidal thread. The choice should be made based on actual requirements.

[0023] The slider bearing 2 is a rolling bearing with an outer sliding sleeve, and its outer diameter is clearance-fitted with the guide groove of the mounting bracket 3. The slider bearing 2 adopts a composite structure, with a ball bearing inside and a sliding sleeve outside. The entire outer cylindrical surface of the slider bearing 2 is clearance-fitted with the guide groove on the mounting bracket 3. The rolling bearing supports the shaft of the tail redirecting roller 1 and enables it to rotate.

[0024] The fixing plate 5 is provided with a through hole that is clearance-fitted with the T-shaped threaded screw 4. The through hole is a hole on the fixing plate 5 for the T-shaped threaded screw 4 to pass through, and its diameter is slightly larger than the minimum value of the smooth part of the screw or the outer diameter of the thread, forming a clearance fit.

[0025] First, insert the shafts at both ends of the redirecting roller 1 into the slider bearing 2. Then, insert the slider bearing 2 into the guide groove of the mounting bracket 3. At the same time, fix the T-shaped threaded screw 4 to the slider bearing 2 with fastener 72. Finally, fix the fixing plate 5 to the mounting bracket 3, and set T-shaped threaded nuts 6 on both sides of the fixing plate 5 to lock the position of the redirecting roller 1 after the conveyor belt is adjusted. Using this device, the tail of the belt conveyor is tightened by a screw. It is not only simple in structure and easy to disassemble and assemble, but also the adjusting screw adopts a high-strength T-shaped thread, which greatly increases the service life of the screw.

[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A screw tensioning device for the tail end of a belt conveyor, comprising a mounting bracket, characterized in that, The mounting bracket has symmetrically arranged slider bearings in the guide groove. The slider bearings are fixedly connected to the rotating shafts on both sides of the redirecting roller. The slider bearings are hinged to the end of the T-shaped threaded screw through fastener one. A fixing plate is fitted on the T-shaped threaded screw. The fixing plate is fixedly connected to the mounting bracket through fastener two. A T-shaped threaded nut is provided on the T-shaped threaded screw. The T-shaped threaded nut is located outside the fixing plate.

2. The screw tensioning device for the tail end of a belt conveyor according to claim 1, characterized in that, The thread of the T-type threaded screw is a trapezoidal thread or a sawtooth thread.

3. The screw tensioning device for the tail end of a belt conveyor according to claim 1, characterized in that, The slider bearing is a rolling bearing with an outer sliding sleeve, and the outer diameter of the slider bearing is clearance-fitted with the guide groove of the mounting bracket.

4. A screw tensioning device for the tail end of a belt conveyor according to claim 1, characterized in that, The fixing plate is provided with a through hole that fits with the T-shaped threaded screw with clearance.

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