Steel grating strip coil unreeling machine with self-adaptive inner hole size

Abstract

The utility model relates to an inner hole size self-adaptive steel grating strip coil unreeling machine. The problems that the expansion and contraction range is small, economy is not enough, a lead screw device is poor in durability, mechanical actions in the process are complex, efficiency is low, and the occupied space of a mechanical device is large are solved. According to the technical scheme, a motor reducer assembly, a lead screw bearing seat and a nut are arranged on a base with an inverted-T-shaped longitudinal section, a power shaft of the motor reducer assembly is connected with one end of a lead screw, the other end of the lead screw penetrates through the lead screw bearing seat and the nut which are matched with the lead screw, a sliding block sliding rail is connected below the nut, and a sliding seat is connected above the nut. The top end of the vertical surface of the base with the inverted T-shaped longitudinal section and the top end of the sliding seat are symmetrically provided with conical wheel bearing seats and are connected with conical wheels, the upper parts of the two conical wheels form a notch shape through which a steel grating strip coil and a C-shaped lifting appliance can pass, and the base with the inverted T-shaped longitudinal section is provided with a disc brake caliper and a brake disc matched with the disc brake caliper to brake the lead screw. The unwinding device is suitable for unwinding steel grating strip coils.

Description

Technical Field

[0001] The utility model relates to a manufacturing device for steel grating products, in particular to a coiling and uncoiling machine for steel grating strips with self-adaptive inner hole dimensions. Background Art

[0002] There are two types of drum expansion and contraction devices for the existing coiling and uncoiling machines of steel grating strips: one is to rely on the axial sliding of double wedges to expand and tighten the inner wall of the strip coil in the radial direction; the other is to change the wedge into a connecting rod mechanism; however, the expansion and contraction ranges of these two structures are relatively small, and the variation range of the inner hole diameters of the raw material steel grating strips supplied on the market far exceeds the expansion and contraction ranges of the above two structures. The original expansion and contraction device uses a hydraulic or screw device. The hydraulic device requires a whole set of hydraulic systems to maintain, including an oil tank, an oil pump, a directional valve, a relief valve, pipelines, a pressure gauge, a hydraulic cylinder, etc., which is not economical; the screw device has two modes: manual and electric. Due to the diameter limitation of the expansion and contraction mandrel, the screw part cannot be made very large, so the durability of the screw device is poor. On the other hand, the technological process of loading the steel grating strip coil is as follows: first, the steel grating strip coil is lifted by a hoist and placed on the rail trolley under the uncoiling machine. The rail trolley moves to the front end of the uncoiling drum. The rail trolley is equipped with a hydraulic lifting device. The hydraulic lifting device raises the strip coil. When the inner hole of the steel grating strip coil reaches the same level as the drum, at this time, the drum is in a contracted state. The rail trolley continues to move the strip coil forward to the drum. The drum is sleeved into the inner hole of the strip coil, and the drum tightening device acts to tighten the inner hole of the steel grating strip coil. This process has complicated mechanical actions, low efficiency, and the mechanical device occupies a large space. Summary of the Invention

[0003] The purpose of the utility model is to provide a coiling and uncoiling machine for steel grating strips with self-adaptive inner hole dimensions to solve the problems existing in the background art: relatively small expansion and contraction range, uneconomical, poor durability of the screw device, complicated mechanical actions in the process, low efficiency, and the mechanical device occupying a large space.

[0004] The technical solution adopted to solve this technical problem is as follows: A steel grating strip coiling and uncoiling machine with self-adaptive inner hole size, characterized in that: an electric motor reducer assembly, a lead screw bearing seat and a nut are arranged on a longitudinal-section inverted T-shaped base. One end of the lead screw is connected to the power shaft of the electric motor reducer assembly, and the other end of the lead screw passes through the lead screw bearing seat and the nut that cooperate with it. A slider is connected below the nut, and the slider slides along a slide rail. The slide rail is fixed on the horizontal plane of the longitudinal-section inverted T-shaped base. A sliding seat is connected above the nut. Conical wheel bearing seats are arranged at symmetrical positions at the top of the vertical surface of the longitudinal-section inverted T-shaped base and the top of the sliding seat. Conical wheels are connected to the two conical wheel bearing seats. A notch shape that can pass through the steel grating strip coil and the C-shaped sling is formed above the two conical wheels. A disc brake caliper and a brake disc that cooperate with it are arranged on the longitudinal-section inverted T-shaped base to brake the lead screw. Among them, counterweights are arranged at the bottoms of the two conical wheels, so that the notches of the two conical wheels face directly upward, ensuring that the C-shaped sling for lifting the steel grating strip coil passes through the notches of the two conical wheels. The vertical part of the longitudinal-section inverted T-shaped base and the sliding seat are of a symmetrical "herringbone" structure. Rolling bearings are installed in the bearing seats of the conical wheels.

[0005] The beneficial effects of the present utility model compared with the prior art are as follows: Due to the adoption of the above technical solution, the entire uncoiling machine is divided into two parts, a base and a sliding seat. The two parts are connected by a sufficiently thick lead screw at the bottom near the base. The side edges of the coil inner hole can be quickly clamped by the two conical wheels through the electric motor reducer assembly, which is simple and practical. This steel grating strip coiling and uncoiling machine is self-adaptive to the different diameters of the raw material coil inner holes currently supplied on the market. Through the conical wheels with notches, the raw material coil can be directly lifted onto the conical wheels by a C-shaped sling with a hoisting vehicle, which is simple and direct, eliminating the complicated process of feeding with a rail trolley, greatly improving the efficiency, the equipment is simple and the cost is low, and the use and maintenance become simple and practical. Rolling bearings are installed in the bearing seats of the conical wheels, and counterweights are welded opposite to the notches of the conical wheels, ensuring that the notches of the two conical wheels automatically face directly upward under no-load conditions, facilitating the C-shaped sling for lifting the coil to pass through the notches. Description of the Drawings

[0006] Figure 1 It is a structural schematic diagram of the present utility model. Figure 2 is Figure 1 the Z-Z sectional view of Detailed Embodiment

[0007] Embodiment: Refer to Figure 1 、 Figure 2, A coiling and uncoiling machine for steel grating strips with self - adapting inner hole size, characterized in that: an electric motor reducer assembly 6, a lead screw bearing seat 5, and a nut 4 are arranged on a longitudinal - section inverted - T - shaped base 1. One end of a lead screw 7 is connected to the power shaft of the electric motor reducer assembly 6, and the other end of the lead screw 7 passes through the lead screw bearing seat 5 and the nut 4 that cooperate with it. A slider 2 is connected below the nut 4, and the slider 2 slides along a slide rail 3. The slide rail 3 is fixed on the horizontal plane of the longitudinal - section inverted - T - shaped base 1. A sliding seat 10 is connected above the nut 4. Cone wheel bearing seats 13 are arranged at symmetric positions at the top of the vertical surface of the longitudinal - section inverted - T - shaped base 1 and the top of the sliding seat 10. Cone wheels 12 are connected to the two cone wheel bearing seats 13. A notch shape capable of passing a steel grating strip coil 14 and a C - type sling 15 is formed above the two cone wheels 12. A disc brake caliper 9 and a brake disc 8 that cooperate with it are arranged on the longitudinal - section inverted - T - shaped base 1 to brake the lead screw 7; a counterweight 11 is arranged at the bottom of the two cone wheels 12, so that the notches of the two cone wheels face directly upward, ensuring that the C - type sling 15 for lifting the steel grating strip coil 14 passes through the notches of the two cone wheels 12; the vertical part of the longitudinal - section inverted - T - shaped base 1 and the sliding seat 10 are of a symmetric "herringbone" structure; rolling bearings are installed in the bearing seats 13 of the cone wheels.

Claims

1. A steel grating strip unwinding machine with self-adaptive inner hole size, characterized by: A motor reducer assembly (6), a screw bearing seat (5), and a nut (4) are arranged on a longitudinal section inverted T-shaped base (1). The power shaft of the motor reducer assembly (6) is connected to one end of a screw (7). The other end of the screw (7) passes through the screw bearing seat (5) and the nut (4) matched therewith. A slider (2) is connected below the nut (4). The slider (2) slides along a slide rail (3). The slide rail (3) is fixed to a horizontal surface of the longitudinal section inverted T-shaped base (1). The nut (4) is connected to the slider above. A movable seat (10), a conical wheel bearing seat (13) is symmetrically arranged at the top of the vertical surface of the inverted T-shaped base (1) in the longitudinal section and the top of the sliding seat (10), the two conical wheel bearing seats (13) are connected to the conical wheels (12), and the upper parts of the two conical wheels (12) are formed with a notch shape that can pass the steel grating belt roll (14) and the C-shaped hanger (15), and a disc brake caliper (9) and a brake disc (8) matched therewith are arranged on the inverted T-shaped base (1) in the longitudinal section to brake the lead screw (7).

2. According to claim 1, a steel grating strip unwinding machine with self-adaptive inner hole size, characterized in that: A counterweight (11) is arranged at the bottom of the two conical wheels (12) so that the notches of the two conical wheels face upward, thereby ensuring that a C-shaped lifting device (15) for lifting the steel grating strip coil (14) passes through the notches of the two conical wheels (12).

3. A steel grating strip unwinding machine with self-adaptive inner hole size according to claim 1 or 2, characterized in that: The vertical portion of the inverted T-shaped base (1) with a longitudinal section and the sliding seat (10) are symmetrical "herringbone" structures.

4. A steel grating strip unwinding machine with self-adaptive inner hole size according to claim 1 or 2, characterized in that: A rolling bearing is installed in the bearing seat (13) of the conical wheel.

5. According to claim 3, a steel grating strip coil unwinding machine with self-adaptive inner hole size, characterized in that: A rolling bearing is installed in the bearing seat (13) of the conical wheel.

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