CN112265784A

CN112265784A - Novel weight tensioning device

Info

Publication number: CN112265784A
Application number: CN202011196978.1A
Authority: CN
Inventors: 满咏梅; 郭春林; 宋兴元; 魏振华; 陈宏奎
Original assignee: China Coal Technology and Engineering Group Shanghai Co Ltd
Current assignee: China Coal Technology and Engineering Group Shanghai Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-26

Abstract

The invention discloses a novel heavy hammer tensioning device which comprises a heavy hammer tensioning device, a movable pulley, a first direction-changing pulley, a second direction-changing pulley, a third direction-changing pulley, a steel wire rope, an electric winch and a rope seat, wherein the movable pulley is arranged on the heavy hammer tensioning device; the electric winch and the first diverting pulley are positioned on the ground; the second direction-changing pulley, the third direction-changing pulley and the rope seat are horizontally arranged at the top end of the roadway; the movable pulley is positioned above the heavy hammer device and is respectively connected with the heavy hammer device and the rope seat through a steel wire rope. The winch steel wire rope carries the heavy hammer device through the movable pulley and the rope seat; when the rubber belt is broken, the winch steel wire rope pulls the heavy hammer device through the movable pulley, so that the heavy hammer box cannot fall directly, and the safety of the heavy hammer tensioning device is protected better; and secondly, the turnabout drum can be conveniently overhauled and replaced at any time under the action of the tensile force of the winch steel wire rope.

Description

Novel weight tensioning device

Technical Field

The invention relates to the technical field of process maintenance, in particular to a novel heavy hammer tensioning device.

Background

In the operation of the belt conveyor, the normal operation of the belt conveyor can be ensured only by providing enough tension to meet the friction transmission requirement of the transmission roller, and the tension device is an indispensable component of the belt conveyor and has the functions of ensuring that the belt conveyor has enough tension, compensating the elastic elongation of the belt and providing a necessary stroke for the belt to be reconnected. There are many types of tensioners, each with advantages and disadvantages. The weight type tensioning device is the tensioning device with the simplest structure and the widest application range.

FIG. 1 shows a weight tensioning device, which mainly comprises direction-changing drums 1(2, symmetrically arranged left and right), an adhesive tape 2, a direction-changing drum 3, a weight box frame 4, a weight box 5 and a guide rod 6.

After passing through the bend pulley 1, the adhesive tape 2 is wound through the bend pulley 3, then returns to the other side and the symmetrical bend pulley 1, and then enters the whole conveyor conveying system. The bend pulley 3 is mounted on the weight frame 4, the weight box 5 is also mounted on the weight frame 4, and the bend pulley 3, the weight frame 4 and the weight box 5 as a whole can slide along the guide rod 6. The length of the guide rod 6 must be greater than the tensioning travel in order to ensure a sufficient tensioning travel.

The tension force of the common weight type tensioning device is constant, and displacement can be generated at any time to absorb the elastic extension and the permanent extension of the conveying belt; the tension can be adjusted by adjusting the number of the heavy hammers; however, there are certain disadvantages: the common weight type tensioning device realizes tensioning by means of the gravity of a weight, and when a belt is suddenly broken, the whole weight device directly falls off, so that safety accidents are caused.

Therefore, it is urgently needed to design a structure capable of ensuring the safety of the tensioning device, which is a problem to be solved in the field.

Disclosure of Invention

Aiming at the technical problem that the existing heavy hammer type tensioning device has potential safety hazards, the invention aims to provide a novel heavy hammer type tensioning device which achieves constant tensioning force and protects the safety of a heavy hammer device.

In order to achieve the above object, the present invention provides a novel weight tensioning device, comprising a weight device; the device also comprises 2 guide rods, a movable pulley, a first direction-changing pulley, a second direction-changing pulley, a third direction-changing pulley, a steel wire rope and an electric winch; the electric winch, the first direction-changing pulley, the second direction-changing pulley, the third direction-changing pulley, the movable pulley, the steel wire rope and the heavy hammer device are sequentially connected;

the electric winch and the first diverting pulley are positioned on the ground; the second direction-changing pulley, the third direction-changing pulley and the rope seat are positioned at the top end of the device; the movable pulley is respectively connected with the heavy hammer device and the rope seat; the electric winch and the steel wire rope play a pulling force on the heavy hammer device through the movable pulley.

Furthermore, the 2 guide rods are symmetrically arranged at two ends of the heavy hammer device; and the upper end and the lower end of each guide rod 2 are provided with limit switches.

Further, the weight device can slide between 2 guide rods.

According to the novel heavy hammer tensioning device, the steel wire rope of the winch is connected with the heavy hammer device, when the conveyor suddenly breaks a belt, the tension of the steel wire rope is generated, the heavy hammer device cannot directly fall off, and the safety of the heavy hammer device is well protected.

Drawings

The invention is further described below in conjunction with the appended drawings and the detailed description.

FIG. 1 is a schematic structural diagram of a conventional weight tensioner;

fig. 2 is a schematic structural diagram of the maintenance protection device in the scheme.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 2, it shows a schematic structural view of the heavy hammer tensioning maintenance protection system in the present solution. As can be seen from the figure, the weight tensioning device in the present embodiment mainly includes a weight tensioning device and an overhaul protection device.

Specifically, the weight tensioning device is composed of a rubber belt 7, a weight box frame 9, a weight box 10 and a bend pulley 13, wherein the weight box 10 is positioned at the bottom end inside the weight frame 9; the bend pulley 13 is positioned at the upper part inside the heavy hammer frame 9, and the adhesive tape 7 is arranged on the bend pulley 13; the specific connection structure is well known to those skilled in the art and will not be described herein.

The overhaul protection device comprises a first direction-changing pulley 11a, a second direction-changing pulley 11b, a third direction-changing pulley 11c, a rope seat 12, a movable pulley 14, a steel wire rope 15 and an electric winch 16.

The electric winch 16 and the first diverting pulley 11a are arranged on the ground in a position opposite to each other, and the electric winch 16 and the first diverting pulley 11a are connected through a steel wire rope 15.

The construction of the electric winch 16 is well known to those skilled in the art and will not be described in detail here.

Further, the second direction-changing pulley 11b and the third direction-changing pulley 11c are horizontally arranged at the top end of the roadway relatively, and the second direction-changing pulley 11b is connected with the first direction-changing pulley 11c through a steel wire rope 15; one end of the second direction-changing pulley 11b is connected with the first direction-changing pulley 11c through a steel wire rope, and the other end of the third direction-changing pulley 11c is connected with the movable pulley 14 through a steel wire rope 15.

The movable pulley 14 is arranged at the top of the heavy hammer device, one side of the movable pulley is connected with the third direction-changing pulley 11c through a steel wire rope 15, and the other side of the movable pulley is connected with the rope seat 12; the bottom of the weight is connected with a weight device through a steel wire rope 15.

The rope seat 12 and the third direction-changing pulley 11c are relatively horizontally arranged at the top end of the roadway and connected with the movable pulley 14.

When the rubber belt on the weight device is broken, the winch steel wire rope pulls the weight device through the movable pulley 14, so that the weight box 10 cannot directly fall off, and the safety of the weight tensioning device is better protected; secondly, the heavy hammer device can slide to a proper position by changing the tension action of the winch steel wire rope, and the heavy hammer device can be conveniently overhauled and the direction-changing drum 13 can be replaced at any time.

The 2 guide rods 8 are respectively vertically arranged in the roadway in parallel, a certain gap is reserved between the 2 guide rods 8, and the size of the gap depends on the width of the heavy hammer device.

The upper end and the lower end of the 2 guide rods 8 are provided with limit switches, when the heavy hammer device slides to a certain position and triggers the limit switches, the heavy hammer device stops sliding immediately, the tensioning stroke is guaranteed not to exceed the range, and the service life of the heavy hammer device can be prolonged.

The body of rod of 2 guide arms 8 is equipped with the spout to with the cooperation of weight device, the weight device can carry out the slip of certain distance from top to bottom between the guide arm, change the tensile force of sticky tape.

The working process of the method in application is illustrated as follows:

in the specific application, the weight device increases the tension of the adhesive tape 7, if the adhesive tape 7 is stretched all the time, the weight device can slide up and down along the guide rod 8, and if the adhesive tape slides to a set limit switch, the sliding can be stopped immediately, and the tension stroke cannot exceed the range, so that the adhesive tape 7 cannot be broken or too loose to slip.

Secondly, if the belt is broken, the electric winch 16, the movable pulley 14 and the rope seat 12 are matched with the steel wire rope 15 to form a protection structure, so that the counterweight device can bear tension force, the counterweight device cannot directly fall off, and the safety of the tensioning device is better protected.

In addition, when the turnabout drum needs to be overhauled or replaced, the whole heavy hammer device can be lifted or lowered to a convenient position only by changing the pulling force of the electric winch 16, and the drum can be overhauled or replaced at any time.

The overhaul protection system of the heavy hammer tensioning device, which is formed according to the scheme, has the following advantages:

(1) the design structure of the heavy hammer tensioning overhaul protection system realizes constant tensioning force and better protects the safety of the heavy hammer device.

(2) The design structure and the arrangement mode of the bend pulley, the movable pulley and the rope seat are more convenient for overhauling and replacing the bend pulley.

(3) The limit switch is arranged on the guide rod, so that the heavy hammer vehicle is ensured to slide in a certain tensioning stroke, and the tensioning stroke is ensured not to exceed the range.

(4) The movable pulley is additionally arranged on the heavy hammer box, so that the pulling force of the winch is reduced by half.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel heavy hammer tensioning device comprises a heavy hammer device; the device is characterized by further comprising 2 guide rods, a movable pulley, a first direction-changing pulley, a second direction-changing pulley, a third direction-changing pulley, a steel wire rope and an electric winch; the electric winch, the first direction-changing pulley, the second direction-changing pulley, the third direction-changing pulley, the movable pulley, the steel wire rope and the heavy hammer device are sequentially connected;

2. The novel weight tensioning device as claimed in claim 1, wherein the 2 guide rods are symmetrically arranged at two ends of the weight device; and the upper end and the lower end of each guide rod 2 are provided with limit switches.

3. A novel weight tensioner as claimed in claim 1, wherein the weight is slidable between 2 guides.