RU2102235C1 - Device for stitching of conveyer belt joints - Google Patents

Abstract

FIELD: equipment for production and maintenance of conveyer belts; applicable in mining, metallurgical, coal and other branches of industry. SUBSTANCE: rods in the device have longitudinal grooves on the fork-shaped end. The stitching-roller spindle is fastened on the mentioned rod end. One end of the spindle is hinge-mounted, and the other is installed in the longitudinal groove for movement and turning relative to the hinge joint through equal angles to both sides from the normal to the rod. Each stitching roller has a cylindrical working surface. The angle of turn of the stitching roller spindle (γ) equals the relation given in the description. EFFECT: improved design. 2 cl, 4 dwg

Description

 The invention relates to equipment used in the manufacturing process and operation of conveyor belts and can find application in its docking and repair at the enterprises of the mining, metallurgical, coal and other industries.

A device for rolling the repaired section of the conveyor belt is known, comprising upper and lower brackets pivotally interconnected by an axis, on the lower of which a clamping mechanism is mounted, and on the upper a clamping mechanism with a clamping roller and a device for adjusting the clamping of the brackets, while the clamping mechanism is made in in the form of a base plate mounted on pivoting levers pivotally connected to a rod connected to a handle pivotally mounted on the axis, and the rolling mechanism is provided with additional stitching rollers, wherein the stitching rollers mounted on the branches of the transmission chain, the envelope attached to the upper arm with an asterisk, and the support plate is mounted on a pair of swing arms pivotally, and the other rests freely [1]
However, the known device for rolling does not provide complete removal of air bubbles from the adhesive seam of the tape, and the preparatory and final operations when using it are quite laborious. The device cannot be used without energy sources and in cramped conditions.

 This is due to the following reasons.

 Moving the rollers during the rolling process along the length of the repaired section is carried out stepwise with a sufficiently long time interval, which is necessary for dismantling and installation operations and adjustment before the next section is rolled. In addition, the step of the transverse movement of the device in the area of the tape is subjective. As a result, part of the air bubbles are not removed from the adhesive seam of the tape, which negatively affects the quality of the connection. In addition, the device is quite complicated, which determines the complexity of its use. The drive of the device is electric; therefore, it cannot be used without electricity.

Closest to the technical essence of the invention is a device for rolling joints of conveyor belts, comprising pivotally connected at one end of the rod with a fork-shaped second end, pressure rollers mounted with the possibility of free rotation on the axes mounted on the fork-shaped end of the rods, clamping device and handles [2]
However, the known device does not provide a uniform pressure across the entire contact area of its working surface with the surface of the connected tape. As a result of this, the adhesive layer applied to the joined sections of the tape will unevenly move along the adhesive joint. When overlapping sections of the layer will occur in the opposite direction.

 In addition, this device does not provide a calculated (optimal) step for moving the roller along the axis of the connected portion of the tape. As a result of this, the overlap of the packaged areas will be uneven, which causes unnecessary labor costs, or poor-quality connection, since in the overlap areas the connection will be made with insufficient pressure and a small overlap area during the rolling process. There can be no overlap at all.

 The technical result of the invention is to provide a uniform specific pressure during the rolling process over the entire contact area of the working surface of the roller with the connecting surface of the conveyor belt section and obtaining the estimated step of moving the roller along the axis of the connected belt section.

где B_л ширина ленты,
b_р ширина ролика,
ΔB_л величина перемещения ролика за осевую линию ленты,
Δb_p величина перекрытия следа прикатки ролика.To achieve a technical result, in the device for rolling the joints of the conveyor belt, which are pivotally connected at one end of the rod with a fork-shaped second end, the roller rollers mounted with the possibility of free rotation on the axes mounted on the fork-shaped end of the rods, a coupling device and handles, according to the invention, the rods are made a longitudinal groove on the fork-shaped end, and the axis of the press roller is fixed on the indicated end of the rod with one end pivotally, and the other is installed in the longitudinal groove with the ability to move and rotate relative to the hinge at equal angles on both sides of the normal to the rod, with each rolling roller made with a cylindrical working surface. In addition, the angle of rotation of the axis of the roller rollers γ is equal to the dependence:

where B _{l the} width of the tape,
b _{p the} width of the roller,
ΔB _{l the} amount of movement of the roller beyond the axial line of the tape,
Δb _{p the} amount of overlap of the track rolling roller.

 The implementation of each press roller with a cylindrical working surface ensures the transfer of uniform piece pressure over the entire contact area of its working surface with the surfaces of the conveyor belt to be connected. On this basis, the displacement of the adhesive layer in the adhesive joint is reduced. In the process of overlapping sections of the tape this phenomenon will not be repeated. At the same time, the overlap area will be minimized, which positively affects productivity, labor and connection quality.

 The fastening of the axis of each roller in the rod on the one hand, and on the other in a longitudinal groove with the ability to move and rotate on the hinge at equal angles on both sides of the normal to the rod, allows during the rolling process to withstand the calculated (optimal) step of moving the roller along the axis the connected portion of the tape and, on this basis, ensure uniform overlap of the track of the rolling of the roller, which positively affects the performance, labor and quality of the connection of the tape.

 In FIG. 1 shows a side view of the device; in FIG. 2 node I in FIG. one; in FIG. 3 node II in FIG. 2; in FIG. 4 diagram of the movement of the roller on the surface of the tape during rolling.

 The device for rolling the joints of the conveyor belt contains the upper 1 and lower 2 rods connected by a hinge 3 at one end, rolling rollers 4, freely rotating on the axes 5, a clamping device 6 and the handle 7. The rollers 4 are made with a working surface of a cylindrical shape. The second end of the rods 1 and 2 is made fork-shaped. The axis 5 of each presser roller is fixed on the fork-shaped end of the rod on one side of the hinge 8, and on the other in the longitudinal groove 9 with the ability to move along the groove 9 and rotate on the hinge 8 at equal angles in both directions from the norms to the rod 1.

где B_л ширина ленты 10,
b_p ширина ролика 4,
ΔB_л величина перемещения ролика за осевую линию ленты,
Δb_p величина перекрытия следа прикатки ролика.The rotation angle of the axis 5 is equal to the dependence:

where B _{l the} width of the tape 10,
b _p roller width 4,
ΔB _{l the} amount of movement of the roller beyond the axial line of the tape,
Δb _{p the} amount of overlap of the track rolling roller.

 The device operates as follows.

 After preparing the ends of the tape 10 for connection (cutting, stripping, roughening, applying a layer, drying, re-applying glue and connecting the ends), place the device so that the tape 10 is located between the headquarters 1 and 2, and the rollers 4 are in contact with its surface. Then, using the clamping device 6, the rods 1,2 are brought together to provide the calculated specific pressure on the surface of the connected tape 10. The tightening force can be controlled by a torque wrench or other device (not shown in the drawing). The device is ready to use. Then, using the handles 7 (the second is not shown), the rods 1 and 2 are moved from the middle of the tape 10 to its edges and back. In this case, the rollers 4, pressed to the tape 10 on both sides, transmit the calculated pressing force of the connected section of the tape, creating the optimum piece pressure, which ensures the displacement of air bubbles from the adhesive joint.

When the rods move due to the pushing force and resistance to the movement of the roller 4 along the tape, a torque arises on the shoulder of its radius, due to which the end of the axis 5 of the roller 4 moves along the groove 9, and the second end rotates on the hinge 8 by an angle 2γ
The change in the position of the axis causes the appearance of a horizontal component of the pushing force directed along the axis of the tape. As a result of this, the roller changes the path of movement along the tape.

 With the reverse movement of the rods, the process is repeated, but the axis of the roller along the groove 9 moves in the opposite direction from the normal to the rods 1.2.

Claims (2)

 1. A device for rolling the joints of the conveyor belt, comprising pivotally connected at one end of the rod with a fork-shaped second end, gear rollers mounted with the possibility of free rotation on the axles mounted on the fork-shaped end of the rod, a coupling device and handles, characterized in that the rod is made with a longitudinal groove on the fork-shaped end, and the axis of the presser roller is fixed on the indicated end of the rod with one end pivotally, and the other is installed in the longitudinal groove with the ability to move and rotate about relative to the hinge at equal angles on both sides of the normal to the rod, with each rolling roller made with a cylindrical working surface. 2. The device according to p. 1, characterized in that the angle of rotation of the axis of the rolling rollers γ is equal to the dependence

where in _{l the} width of the tape;
in _{p the} width of the roller;
ΔB _l - the amount of movement of the roller beyond the axial line of the tape;
Δb _p - the amount of overlap of the track rolling roller.

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