CN201020493Y - Rolled steel bending machine with good security - Google Patents

Abstract

The utility model relates to a steel bending machine with good security, the machine includes a shell, a motor, a deceleration device, a power output gear, a bending rotary head gear, a bending rotary head, a trip switch and an electrical control box, the improvement is that the bending rotary head gear is the tooth missing gear, a top half gear which does not participate in the meshing rotary work is not equipped with the gear and only equipped with a tooth root circle, the surrounding of the tooth root circle of near the two ends of the wheel tooth is symmetrically equipped with two synchronous drive spring plates, one end is fixed on the tooth root circle and the other end extends to the top circle. The technology project can effectively avoid the accident which caused by the reverse connecting of the motor or the failure of electric system controlling and effectively overcome the shortcomings of the prior art. In addition, the technical project is simple, easy to implement, especially can improve the existing steel bending machine so that easy to spread and apply. The utility model is particularly suited for bending steel of construction sites to use.

Description

Steel bending machine with good safety

Affiliated technical field

The utility model relates to machining equipment, particularly has the steel bending machine of good safety, and suitable construction site bends steel and uses.

Background technology

The steel bending machine is that building trade is usually used in bending round steel and becomes plant equipment hook-shaped or the knuckle shape, this steel bending machine mainly by casing, motor, deceleration device, power output gear, curve head, curve a gear and travel switch and electric cabinet and form.Its operation principle is to drive power output gear by motor and deceleration device to rotate, the gear that curves that driving is engaged with rotates, drive is fixed in the head that curves that curves on the gear and is rotated around the axle core, the round steel that makes the centering axle and curve between the head curves into required shape, its angle that curves has 90 degree and 180 to spend two kinds, is controlled rotational angle and is resetted by travel switch.Following problem in use appears in the steel bending machine of this traditional structure sometimes, in case power supply connects anti-or automatically controlled generation fault, its power output gear will drive always and curve the rotation of gear and cause mechanical accident to damage parts, even is forcing to burn motor when moving.This is the hidden danger that the present steel bending machine that uses exists always, also is not well solved so far.

Summary of the invention

For solve existing steel bending machine because of power supply connects the anti-or automatically controlled malfunctioning fault that produces, the utility model provides the machine of the steel bending with good safety, this bending function is avoided the generation of above-mentioned accident effectively, and improvements are simply effective, can on existing steel bending machine, carry out, easy to utilize.

Task of the present utility model realizes by this way: the steel bending machine with good safety, include casing, motor, deceleration device, power output gear, curve a gear, curve head, travel switch and electric cabinet, its improvements are that a described gear that curves is the hypodontia gear, the wheel toothed portion that its first half does not participate in engaged transmission work is not provided with the gear teeth, root circle only is set, symmetry tangentially is provided with two driven in synchronism latch plates on the root circle circumference of the close two ends gear teeth, its upper end is fixed on the root circle, and the other end extends on the outside circle.

It is perfect that the purpose of this utility model also can take following measure:

Also correspondingly between the end face that curves a gear and cover plate be provided with two damping tongues, an end of this damping tongue is fixed on the cover plate, and the other end presses and curves on the gear face.The effect of damping tongue is to increase and curves a gear rotation dynamic resistance, reduces rotator inertia, improves and rotates accuracy.

The steel bending machine generally only is used for the round steel bar is bent to the sector of an angle of 90 degrees or the hook-type of 180 degree, therefore the elbow gear that driving curves head only rotates an angle of 90 degrees or instructions for use is just satisfied at 180 degree angles, and it is to participate in engaged transmission work never that the gear teeth that are close to 180 degree are arranged.Just because of the existence of this part gear teeth, in case power supply reversal connection or automatically controlled generation fault, the motor counter-rotating or the amount of turning over just, power output gear with curve the gear teeth meshing that a gear does not participate in engaged transmission work originally, make to curve a gear and rotate counterclockwise or rotate excessive, cause mechanical accident to take place.The technical program is made above-mentioned improvement at the reason of generation accident just, a gear tooth that curves that does not participate in engaged transmission work is partly removed, only stay root circle, and sync driver is set, its operation principle is such: when error causes motor when counter-rotating, power output gear clockwise rotates, and breaks away from immediately and curves a gear meshing, can not drive its rotation, thereby avoid the generation of accident.And after motor recovered just changeing, power output gear rotated counterclockwise, and this moment, the driven in synchronism latch plate was absorbed in the between cog under elastic reaction, under the promotion of power output gear, drove and curved a gear rotation, again with power output gear engagement operate as normal; Malfunctioning when electric-control system, when curving a gear rotation and cross 180 degree still stop is not rotated further at angles, at this moment, owing to curve a gear hypodontia, power output gear breaks away from and is engaged with, and can't drive and curve a gear rotation, thereby avoid accident to take place.After electric-control system is repaired, also make power output gear and curve a gear and mesh again, recover operate as normal by sync driver.

In sum, the technical program can effectively be avoided the accident generation that produces because of the error of motor reversal connection or electric-control system, overcomes the deficiency of prior art effectively.Simple, the enforcement easily of the technical program in addition particularly can be transformed existing steel bending machine, and is easy to utilize.

Description of drawings

Fig. 1 is the steel bending machine partial schematic sectional view with good safety.

Fig. 2 is for curving a gear (5) locate the not have cover plate zoomed-in view of (10) among Fig. 1.

Fig. 3 be among Fig. 2 B to view.

The specific embodiment

With reference to Fig. 1, steel bending machine with good safety, include casing 1, motor 2, deceleration device 3, power output gear 4, curve a gear 5, curve 6, travel switch (omitting in the accompanying drawing) and electric cabinet 7, the technical program also will curve a gear 5 and make the hypodontia gear into; As shown in Figure 2, remove curving the gear teeth that a gear 5 first halves do not participate in engaged transmission work, this part is only stayed root circle 8, symmetry tangentially is provided with two driven in synchronism latch plates 9 on the circumference of these root circle 8 close two ends gear teeth, the upper end of this driven in synchronism latch plate 9 is fixed on the root circle 8, and the other end tightly extends on the outside circle.

In order to make sync driver 9 and to curve a gear 5 and power output gear 4 correct engagement, do not produce and bump tooth, driven in synchronism latch plate 9 can be installed on the root circle 8 by the slotted hole and the screw at its rear portion, so that adjust.

As shown in Figure 3, also corresponding between the end face that curves a gear 5 and cover plate 10 two damping tongues 11 are set, an end of this damping tongue 11 is fixed on the cover plate 10, and the other end is pressed on and curves on a gear 5 end faces.This damping tongue 11 can adopt spring steel to bend and form, by being fixedly welded on the cover plate 10.

12 is round steel among Fig. 1.

Claims (2)

1. steel bending machine with good safety, include casing (1), motor (2), deceleration device (3), power output gear (4), curve a gear (5), curve head (6), travel switch and electric cabinet (7), it is characterized in that the described gear (5) that curves is the hypodontia gear, the wheel toothed portion that its first half does not participate in engaged transmission work is not provided with the gear teeth, root circle (8) only is set, go up symmetry at the root circle (8) of the close two ends gear teeth two driven in synchronism latch plates (9) tangentially are set, the one end is fixed on root circle (8) circumference, and the other end extends on the outside circle.

2. steel bending machine according to claim 1, it is characterized in that the also corresponding two damping tongues (11) that are provided with between the end face that curves a gear (5) and cover plate (10), one end of this damping tongue (11) is fixed on the cover plate (10), and the other end presses and curves on a gear (5) end face.

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