Novel anti-drop roll carrier

Abstract

This utility model relates to an anti-fall-off idler frame, including an idler fixing frame and an idler assembly. The idler fixing frame includes an idler crossbar, a pair of high idler supports, and a pair of low idler supports, as well as limiting rings and positioning pins. U-shaped grooves are respectively opened at the top of the high idler frames, and positioning holes and limiting rings are symmetrically opened on both sides of the U-shaped grooves. Each limiting ring is a U-shaped galvanized round steel limiting ring with pin holes at its two tail ends. The low idler supports are inverted V-shaped supports, with side idler positioning holes formed on the upper B side of the inverted V-shaped supports, and grooves opened on the upper A side of the inverted V-shaped supports. This utility model changes the mounting holes of the two side idlers to closed mounting holes, thereby achieving the purpose of preventing idler fall-off and avoiding accidents such as belt tearing or belt jamming causing motor burnout due to idler fall-off. At the same time, idler installation and replacement are convenient and quick.

Description

Technical Field

[0001] This utility model belongs to the technical field of belt conveyor equipment, and in particular relates to a new type of anti-fall-off idler frame. Technical Background

[0002] Belt conveyors that transport materials such as ores and concentrates extensively use trough-type idler frames. Three cylindrical idlers are installed on the trough-type idler frame through U-shaped slots to support the belt and reduce friction generated during belt movement. During production, when the belt conveyor starts under heavy load or when the idler frame is damaged, the idler frame may tip over, and the idlers may fall out of the U-shaped slots and onto the non-working surface of the conveyor belt returning to the machine. This can easily cause the conveyor belt to tear or jam, resulting in motor burnout. Utility Model Content

[0003] The purpose of this utility model is to provide a new type of anti-fall-off idler frame, which prevents the idler installed on top of the trough idler frame from falling off when it tilts, thus avoiding the tearing of the conveyor belt or the motor burnout caused by the falling idler.

[0004] The objective of this utility model is achieved through the following technical solution: An anti-fall-off idler frame includes an idler fixing frame and an idler assembly. The idler assembly includes a middle idler and two side idlers. The idler fixing frame includes an idler crossbeam, a left high idler bracket, a middle left low idler bracket, a right high idler bracket, and a right low idler bracket. The idler crossbeam is fixedly connected to the left high idler bracket and the right high idler bracket, respectively. The left high idler bracket and the right high idler bracket are mirror images of each other. U-shaped slots are respectively formed at the top of the left high idler bracket and the right high idler bracket have symmetrically formed positioning holes A on both sides of the U-shaped slots. The left high idler bracket and the right high idler bracket also include a limiting ring and a positioning pin. The limiting ring is a U-shaped galvanized round steel limiting ring with pin holes at its two tail ends. The left and right low idler brackets are both inverted V-shaped brackets, with a groove at the bottom that matches the idler crossbeam. Positioning holes B are formed on the outer side of the upper part of the inverted V-shaped brackets, and grooves are opened on the inner side of the upper part of the inverted V-shaped brackets. The two ends of the middle idler are rotatably set in the grooves of the two inverted V-shaped brackets. One end of each of the two side idlers is inserted into the positioning hole B of the inverted V-shaped bracket, and the other end is inserted into the U-shaped grooves at the top of the left and right high idler brackets, respectively. Then, a U-shaped galvanized round steel limiting ring is inserted into the two positioning holes A, and then a positioning pin is inserted into the two pin holes of the limiting ring, thereby sealing one end of the left and right idlers in the U-shaped grooves.

[0005] As a further description of the above technical solution: the positioning hole of the side roller is a closed elongated hole.

[0006] As a further description of the above technical solution: the diameter of the positioning hole of the limiting ring is 9mm.

[0007] As a further description of the above technical solution: the diameter of the U-shaped galvanized round steel limiting ring is 8mm, and the diameter pin holes at both ends are 4mm.

[0008] Compared with the prior art, the beneficial effects of this utility model are: Because the roller frame of this utility model adopts the above-mentioned structure, the mounting holes of the two side rollers are changed to closed mounting holes, thereby achieving the purpose of preventing the rollers from falling off. This avoids accidents such as tearing of the tape or motor burnout caused by tape jamming due to roller falling off. At the same time, the installation and replacement of the rollers are convenient and quick. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the anti-falling idler roller frame of this utility model; Figure 2 for Figure 1 Enlarged view of part C; Figure 3 This is a schematic diagram showing the installation steps of the side idler rollers; Figure 4 A schematic diagram illustrating the application of roller frames to prevent them from falling off. Detailed Implementation

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] like Figures 1-4 As shown, this utility model provides an anti-falling idler frame, including an idler fixing frame and an idler assembly. The idler assembly consists of a middle idler 5 and two side idlers 4. The idler fixing frame includes an idler crossbeam 1, a pair of high idler supports 2 symmetrically arranged at both ends, and a pair of low idler supports symmetrically arranged on the idler crossbeam 1. Both ends of the idler crossbeam 1 are fixedly connected to the pair of high idler supports 2. It also includes a limiting ring and a positioning pin 25. U-shaped grooves 21 are respectively opened on the top of the high idler supports 2, and limiting ring positioning holes 22 are symmetrically opened on both sides of the U-shaped grooves 21. The limiting ring is a U-shaped galvanized round steel limiting ring 23, with pin holes 24 opened at its two tail ends. The pair of low idler roller brackets are inverted V-shaped brackets, with a groove 33 at the bottom that matches the idler roller cross frame 1. Side idler roller positioning holes 32 are formed on the upper B side of the inverted V-shaped brackets, and a groove 31 is opened on the upper A side of the inverted V-shaped brackets. The two ends of the middle idler roller 5 are rotatably set in the grooves 31 of the two inverted V-shaped brackets. One end of each of the two side idler rollers is inserted into the side idler roller positioning hole 32 of the inverted V-shaped bracket, and the other end is inserted into the U-shaped groove 21 at the top of the pair of high idler roller brackets. Then, the U-shaped galvanized round steel limiting ring 23 is inserted into the two limiting ring positioning holes 22, and then the positioning pin 23 is inserted into the two pin holes 24 of the limiting ring, so that one end of each of the two side idler rollers 4 is closed in the U-shaped groove 21.

[0012] The aforementioned anti-fall idler frame is a modification of a standard trough-type idler frame. Taking the mounting brackets of its two side idlers 5 as an example, the mounting holes on the B side of the low idler bracket are modified as follows: Figure 1 As shown, the original long U-shaped groove is changed to a closed long slot. The U-shaped groove of the pair of high idler roller brackets remains unchanged, but two positioning holes A with a diameter of 9mm are drilled on both sides of the U-shaped groove. A galvanized round steel limiting ring 23 with a U-shaped diameter of 8mm is used, and there is a pin hole 24 with a diameter of 4mm on both ends of the ring, so that a positioning pin 25 with a diameter of 3mm can pass through, which can play a limiting role, thereby achieving the purpose of preventing the idler roller from falling off. Figure 2 As shown.

[0013] The installation and replacement of the anti-fall-off idler roller frame of this utility model are simple and convenient. Taking the installation and removal of two side idler rollers as an example, the installation steps are as follows: 1. The two ends of the roller shafts on both sides of the intermediate roller 5 are rotatably set in the slots 31 of the two inverted V-shaped brackets; 2. One end of each of the two side idlers 4 is inserted into the side idler positioning hole 32 of the inverted V-shaped bracket, and the other end is inserted into the U-shaped groove 21 at the top of a pair of high idler brackets. Then, the U-shaped galvanized round steel limiting ring 23 is inserted into the two limiting ring positioning holes 22, and the positioning pin 25 is inserted into the two pin holes 24 of the limiting ring, thereby sealing one end of the side idler in the U-shaped groove. In this way, when the trough idler frame tilts, the two side idlers will not fall off, avoiding the tearing of the conveyor belt or the motor burnout caused by the detached idlers.

Claims

1. A fall-off-preventing roller frame comprising a roller fixing frame and a roller assembly, the roller assembly being composed of a middle roller and two side rollers, characterized in that: The idler roller fixing frame includes an idler roller crossbar, a pair of high idler roller brackets symmetrically arranged at the left and right ends, and a pair of low idler roller brackets symmetrically arranged on the idler roller crossbar. The two ends of the idler roller crossbar are respectively fixedly connected to the pair of high idler roller brackets. It also includes a limiting ring and a positioning pin. A U-shaped groove is opened on the top of the high idler roller bracket, and positioning holes and limiting rings are symmetrically opened on both sides of the U-shaped groove. The limiting ring is a U-shaped galvanized round steel limiting ring, and pin holes are opened at the tail ends on both sides. The pair of low idler supports are inverted V-shaped supports, with a groove at the bottom that matches the idler crossbeam. Side idler positioning holes are formed on the upper B side of the inverted V-shaped supports, and a groove is opened on the upper A side of the inverted V-shaped supports. The two ends of the middle idler are rotatably set in the grooves of the two inverted V-shaped supports. One end of each of the two side idlers is inserted into the side idler positioning hole of the inverted V-shaped supports, and the other end is inserted into the U-shaped groove at the top of the pair of high idler supports. Then, a U-shaped galvanized round steel limiting ring is inserted into the two limiting ring positioning holes, and then a positioning pin is inserted into the two pin holes of the limiting ring, thereby sealing one end of each of the two side idlers in the U-shaped groove.

2. The anti-falling idler frame according to claim 1, characterized in that: The side roller positioning hole is a closed elongated hole.

3. The anti-falling idler frame according to claim 1, characterized in that: The diameter of the positioning hole of the limiting ring is 9mm.

4. The anti-falling idler frame according to claim 1, characterized in that: The diameter of the U-shaped galvanized round steel limiting ring is 8mm, and the diameter of the pin holes at both ends is 4mm.

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