Simple belt tensioning device arranged on machine head of belt coal conveyor

Abstract

The utility model discloses a simple belt tensioning device arranged on a machine head of a belt coal conveyor, the machine head of the belt coal conveyor comprises an unloading roller and a roller mounting rack, the roller mounting rack comprises boundary beams located on the left side and the right side and supporting legs arranged at the bottoms of the boundary beams, rolling shafts are arranged at the two ends of the unloading roller, and the unloading roller is arranged on the roller mounting rack. The device further comprises long-strip-shaped lower steel channels with upward notches, the long-strip-shaped lower steel channels are fixed to the left side edge beam and the right side edge beam, long-strip-shaped upper steel channels with the notches opposite to the notches of the lower steel channels are correspondingly arranged over the lower steel channels, a front baffle and a rear baffle are fixed to the front ends and the rear ends of the upper steel channels and the lower steel channels on the left side edge beam and the right side edge beam respectively, and a sliding way is formed between the long-strip-shaped upper steel channels and the long-strip-shaped lower steel channels. The sliding block assembly can slide in a sliding way formed between the strip-shaped upper channel steel and the strip-shaped lower channel steel on the left side and the right side, the driving mechanism drives the sliding block assembly to slide, and the rolling shafts at the two ends of the unloading roller are rotationally limited in the sliding block assembly. By the adoption of the device, the underground space is saved, and the manufacturing cost is relatively low.

Description

TECHNICAL FIELD

[0001] The utility model relates to a simple belt tensioning device which can fine tune the tension of a coal conveying belt and is arranged on the head of a belt coal conveyor. BACKGROUND

[0002] During underground coal mining, the coal is conveyed by a belt coal conveyor. The belt coal conveyor mainly comprises a head and a tail, the head comprises an unloading drum, the tail is provided with a driving drum, the driving drum and the unloading drum are surrounded by a coal conveying belt, and the unloading drum is supported by a drum mounting frame.

[0003] After the belt coal conveyor is operated for a long time, the coal conveying belt may be slightly slackened, and the tension of the coal conveying belt needs to be fine tuned to meet the coal conveying requirements of the belt coal conveyor.

[0004] In the prior art, the fine tuning of the tension of the coal conveying belt can be achieved by using two hydraulic cylinders and establishing a hydraulic station, the two hydraulic cylinders are arranged on the drum mounting frame, the piston rods of the hydraulic cylinders are connected to the rollers at the two ends of the unloading drum, the hydraulic station provides hydraulic power to drive the hydraulic cylinders to work, and the extension of the piston rods of the two hydraulic cylinders can adjust the position of the unloading drum, so that the tension of the coal conveying belt can be fine tuned.

[0005] The above-mentioned prior art uses two hydraulic cylinders and establishes a hydraulic station to move the position of the unloading drum to adjust the tension of the belt, which not only occupies a large underground space, but also has a high manufacturing cost. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problem of providing a simple belt tensioning device which can fine tune the tension of a coal conveying belt and is arranged on the head of a belt coal conveyor, and the use of the utility model not only saves underground space, but also has a relatively low manufacturing cost.

[0007] The utility model discloses a simple belt tensioning device arranged on the head of belt coal conveyor, which comprises an unloading roller and a roller mounting frame, the roller mounting frame comprises side beams on the left and right sides and supporting legs mounted on the bottom of the side beams, a cross beam is connected between the front ends of the side beams on the left and right sides, the unloading roller has two ends with rollers, and further comprises long strip-shaped lower channel steels with notches upwardly fixed on the side beams on the left and right sides.

[0008] As an improvement of the utility model, the sliding block assembly comprises a top cover plate and a first limiting baffle, a second limiting baffle and a mounting plate vertically fixed on the bottom of the top cover plate from front to back, the first limiting baffle, the second limiting baffle and the mounting plate are parallel to each other, the rollers are rotatably limited between the first limiting baffle and the second limiting baffle, when the sliding block assembly is located in the slide, the bottom of the first limiting baffle, the second limiting baffle and the mounting plate falls to the groove bottom of the lower channel steel, and the top cover plate is just located in the notch of the upper channel steel; the driving mechanism comprises a lead screw, a limiting nut and a locking nut are respectively screwed on the lead screw, correspondingly, the rear baffle has screw holes matched with the lead screw, the mounting plate has a mounting hole through which the lead screw passes, the lead screw is mounted in the screw hole of the rear baffle, one end of the lead screw passes through the mounting hole of the mounting plate and is limited by the limiting nut, and the other end is located outside the rear baffle and is locked and fixed by the locking nut.

[0009] The simple belt tensioning device arranged on the head of belt coal conveyor has the advantages that when the coal conveying belt appears slight relaxation, the locking nut can be loosened first, and then the lead screw is rotated, the lead screw is rotated in the screw hole of the rear baffle, which drives the sliding block assembly to slide in the slide formed between the long strip-shaped upper and lower channel steels, further drives the corresponding movement of the rollers limited between the first and second limiting baffles, drives the corresponding movement of the unloading roller, and finally achieves the purpose of adjusting the tension of the coal conveying belt through the movement of the unloading roller. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model makes further detailed description in combination with the drawings.

[0011] Figure 1 It is the main view structural schematic drawing of simple belt tensioner of the utility model which is arranged on the machine head of belt coal conveyor.

[0012] Figure 2 It is the left view structural schematic drawing of the utility model. Figure 1

[0013] Figure 3 It is the top view structural schematic drawing of the utility model. Figure 1

[0014] Figure 4 It is the main view structural schematic drawing of long strip lower channel steel in the utility model.

[0015] Figure 5 It is the side view structural schematic drawing of the utility model. Figure 4

[0016] It is the top view structural schematic drawing of the utility model. Figure 6 Figure 4 It is the main view structural schematic drawing of long strip upper channel steel in the utility model.

[0017] Figure 7 It is the side view structural schematic drawing of the utility model.

[0018] Figure 8 Figure 7 It is the top view structural schematic drawing of the utility model.

[0019] Figure 9 It is the top view structural schematic drawing of the utility model. Figure 7

[0020] Figure 10 It is the structural state schematic drawing when the channel mouth of upper and lower channel steel in the utility model is opposite.

[0021] Figure 11 It is the main view structural schematic drawing of slider assembly in the utility model.

[0022] Figure 12 It is the left view structural schematic drawing of the utility model. Figure 11

[0023] It is the right view structural schematic drawing of the utility model. Figure 13 Figure 11 It is the top view structural schematic drawing of the utility model.

[0024] Figure 14 Figure 11 It is the top view structural schematic drawing of the utility model.

[0025] Figure 15 It is the main view structural schematic drawing of back baffle in the utility model. ​​​​​​​

[0026] Figure 16 is the main view structure schematic diagram of the driving mechanism in the utility model. DETAILED DESCRIPTION

[0027] Reference Figure 1 - Figure 16 The utility model relates to a simple belt tensioning device set up on the head of belt coal conveyor, the head of belt coal conveyor includes unloading cylinder 10 and cylinder mounting frame 20, and the cylinder mounting frame includes the side beam 21 located left and right two sides and the supporting leg 22 installed on the bottom of side beam, and the transverse beam 23 is connected between the front end of left and right side beams, and the both ends of unloading cylinder have the roller shaft 11, and it is characterized by: still including the long strip shape lower channel steel 1 of notched mouth upwards fixed on left and right side beams 21, and the long strip shape upper channel steel 2 of notched mouth opposite lower channel steel notched mouth is set up correspondingly above every lower channel steel, and the front and rear baffle 3,4 of left and right upper and lower channel steel's front and rear ends are fixed respectively, and the slide 5 is formed between long strip shape upper and lower channel steel, still including the slider assembly 6 that can slide in the slide formed between left and right long strip shape upper and lower channel steel and the driving mechanism 7 of driving the slider assembly sliding, and the roller shaft 11 of unloading cylinder both ends is rotatably positioned in the slider assembly 6. The slider assembly 6 includes the top cover plate 61 and the first limiting baffle 62, the second limiting baffle 63 and the mounting plate 64 vertically fixed on the bottom of top cover plate from front to back in proper order, and the first limiting baffle, the second limiting baffle and the mounting plate are parallel to each other, and the roller shaft 11 is rotatably positioned between the first limiting baffle and the second limiting baffle, when the slider assembly is located in the slide 5, the bottom of first limiting baffle, second limiting baffle and mounting plate falls to the groove bottom of lower channel steel, and the top cover plate just locates in the notched mouth of upper channel steel, the driving mechanism 7 includes the lead screw 71, the limiting nut 72 and the locking nut 73 are rotated and positioned on the lead screw respectively, and the screw hole 41 matched with the lead screw is formed on the rear baffle 4 correspondingly, and the mounting hole 65 for the one end of lead screw to pass through is formed on the mounting plate 64, the lead screw is installed in the screw hole of rear baffle, one end of lead screw passes through the mounting hole of mounting plate and is positioned by the limiting nut 72, and the other end is located on the outside of rear baffle and is locked and fixed by the locking nut 73.

[0028] It can be understood that the above specific description about the utility model is only used for illustrating the utility model and is not limited to the technical scheme described in the utility model embodiment, and any modification or equivalent replacement to the utility model to achieve the same technical effect is within the protection scope of the utility model.

Claims

1. A simple belt tensioning device arranged on a belt coal conveyor head, the belt coal conveyor head comprising an unloading drum (10) and a drum mounting frame (20), the drum mounting frame comprising side beams (21) on left and right sides and supporting legs (22) mounted on the bottom of the side beams, a cross beam (23) being connected between the front ends of the side beams on the left and right sides, the unloading drum having drum shafts (11) at both ends, characterized in that: It also includes the long strip-shaped lower channel steel (1) fixed on the left and right side beams (21) with the notches facing upwards, the long strip-shaped upper channel steel (2) is arranged above each lower channel steel with the notches opposite to the notches of the lower channel steel, the front and rear baffle plates (3, 4) are respectively fixed on the front and rear ends of the upper and lower channel steels on the left and right sides, and the slide (5) is formed between the long strip-shaped upper and lower channel steels; it also includes the sliding block assembly (6) which can slide in the slide formed between the long strip-shaped upper and lower channel steels on the left and right sides and the driving mechanism (7) which drives the sliding block assembly to slide, and the roller shafts (11) at both ends of the unloading roller are respectively rotatably limited in the sliding block assembly (6).

2. The simple belt tensioning device arranged on the head of the belt coal conveyor according to claim 1, characterized in that: The sliding block assembly (6) includes the top cover plate (61), the first limiting baffle plate (62), the second limiting baffle plate (63) and the mounting plate (64) which are vertically fixed on the bottom of the top cover plate from front to back, the first limiting baffle plate, the second limiting baffle plate and the mounting plate are parallel to each other, the roller shaft (11) is rotatably limited between the first and second limiting baffle plates, when the sliding block assembly is located in the slide (5), the bottom of the first and second limiting baffle plates and the mounting plate falls to the groove bottom of the lower channel steel, and the top cover plate is just located in the notch of the upper channel steel; the driving mechanism (7) includes the lead screw (71), the limiting nut (72) and the locking nut (73) which are respectively screwed on the lead screw, the rear baffle plate (4) has the screw hole (41) matched with the lead screw, the mounting plate (64) has the mounting hole (65) through which the one end of the lead screw passes, the lead screw is installed in the screw hole of the rear baffle plate, the one end of the lead screw passes through the mounting hole of the mounting plate and is limited by the limiting nut (72), and the other end is located outside the rear baffle plate and is locked and fixed by the locking nut (73).

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