CN107571274A - A kind of pulling-in dog for rotary heating furnace dress feeding device - Google Patents

Abstract

The present invention relates to steel processing equipment field, specifically a kind of pulling-in dog for rotary heating furnace dress feeding device.Including two claw beams be arrangeding in parallel, two claw beams are set in the first diplopore bearing block close to the position at middle part, two claw beams are located to be set in the second diplopore bearing block close to first diplopore bearing block one end, the other end of two claw beams is respectively equipped with the relative clamp of notch, is additionally provided between two claw beams for controlling the drive mechanism of two clamp foldings by controlling the rotation of two claw beams.The present invention is simple in construction, and cost is cheap, and can meet the gripping material requirement of rotary heating furnace dress feeding device.

Description

A material clamp used for loading and unloading device of annular heating furnace

technical field

The invention relates to the field of iron and steel processing equipment, in particular to a clamping pliers used for loading and unloading devices of annular heating furnaces.

Background technique

In the steel pipe manufacturing enterprise, to make the steel pipe shape, the steel pipe billet must be heated first, and then the steel pipe can be formed by the forming machine. Because the heating of the steel billet is different from that of other steel billets, the heating accuracy is very high, and all parts of the steel billet are required to be heated evenly, so as to prevent breakage, deformation, and uneven thickness distribution of the steel pipe during the drilling and straightening process. Uniformity, etc., so the traditional pusher type heating furnace cannot be used to heat it, because the heating of the traditional pusher type heating furnace is not very uniform. In the case of the traditional type, it is more heated in the middle, so the ring heating furnace can only be used to heat the billet. Because the annular heating furnace can evenly heat both ends and the middle of the steel pipe billet, but because the annular heating furnace is a round closed structure, the billet cannot be pushed from one end to the other by a pusher, so the traditional The pusher type feeding and discharging machine is not suitable for use in the annular heating furnace.

At present, the loading and unloading device for the annular heating furnace has not formed a unified molded product. It is mainly in the form of forklift transformation, that is, the standard forklift is used as the base, the front fork is removed, and the special manipulator for the loading and unloading machine is installed and executed. The system enables it to complete the following seven actions: overall walking, turning, clamping of the pincers, rotation of the pincers, swinging of the pincers, parallel lifting of the pincers, and pitching and lifting of the pincers. This kind of annular heating wheel loading and unloading device is still directly operated by the staff. On the one hand, because of manual direct operation, it is easy to cause bumps on the blanks grabbed by the manipulator, which affects product quality. On the other hand, because the environment at the inlet and outlet of the annular heating furnace is very harsh, with high temperature and large dust, it is generally difficult for the staff to operate there for a long time, especially the operator of the loading and unloading machine at the furnace mouth. If the pressure in the furnace is not well controlled, it may cause the fire to run out, causing the temperature of the furnace mouth to rise sharply, and there may be a danger of scalding the operator. However, due to the limitations of current domestic and foreign technical capabilities, it is difficult to completely control it. The furnace pressure of the heating furnace, so the remote control and automatic control of the loading and unloading machine is a main direction of development today. There is a new type of loading and unloading device for annular heating furnace, which includes a frame, a slide rail fixed on the frame, a mobile trolley slid on the slide rail, and a manipulator set on the mobile trolley. The steel pipe blank can be moved by the manipulator Clamping, and then transfer the steel pipe billet between the annular heating furnace, the raw material pile and the finished product pile through the sliding of the moving trolley. Among them, the manipulator often adopts a general-purpose manipulator. This kind of manipulator requires multiple degrees of freedom, and an additional mechanism for controlling the manipulator's lifting is required on the mobile trolley, and the structure is complex, the cost is high, and the maintenance is inconvenient. Development of loading and unloading device for heating furnace.

Contents of the invention

The invention aims to provide a clamping tongs specially used for loading and unloading devices of annular heating furnaces with simple structure and low cost.

In order to solve the above technical problems, the technical solution adopted in the present invention is: a clamping tongs for loading and unloading device of an annular heating furnace, comprising two parallel clamp rods, and the parts near the middle of the two clamp rods are sleeved on the In the first double-hole bearing seat, two clamp rods are located near one end of the first double-hole bearing seat and sleeved in the second double-hole bearing seat. A driving mechanism for controlling the opening and closing of the two tongs by controlling the rotation of the two tongs is also arranged between the two tongs.

Preferably, the two clamps are two identical and symmetrically arranged arc-shaped plates, the tops of the two arc-shaped plates are respectively fixed to the corresponding tong bars along the length direction of the corresponding tong bars, and the central axis of the notch of the arc-shaped plates It is located in the same plane with the central axis of the corresponding pincer rod and forms an included angle of 4°.

Preferably, on the side of the tongs opposite to the notch, a plurality of reinforcing rib plates for fixing to the corresponding tong bar are arranged at intervals along the length direction of the tongs.

Preferably, the drive mechanism includes a clamping cylinder, a swing arm is respectively hinged at the telescoping end and the cylinder body end of the clamping cylinder, and the other ends of the two swing arms are respectively fixedly connected with the two clamp rods.

Preferably, the clamping cylinder is arranged between the first double-hole bearing seat and the second double-hole bearing seat on the two tong rods.

Preferably, the telescopic end and the cylinder body end of the clamping cylinder are respectively hinged to the swing arm through a pin structure.

Preferably, gears are respectively provided on the ends of the two pliers rods away from the pliers, and the two gears are engaged and connected.

Preferably, the two clamp rods are both hollow rods, and water-cooling tubes are respectively provided in the clamp rods, and the inlet and outlet of the water-cooling tubes are both arranged on the end of the clamp rod away from the clamp.

Preferably, both the first double-hole bearing seat and the second double-hole bearing seat are provided with hinged seat plates for connecting with the mobile trolley in the loading and unloading device of the annular heating furnace.

Beneficial effect

The invention has simple structure, easy realization, low cost and stable performance. After the present invention replaces the manipulator with complex structure in the prior art and assembles it on the mobile trolley of the loading and unloading device of the annular heating furnace, the loading and unloading device of the annular heating furnace has strong applicability, wide range of activities, and no dead angle. All workpieces can be taken and delivered separately, which improves the effective space utilization rate of the annular heating furnace. The materials taken out of the heating furnace can be conveniently sent directly to the jaws of the manipulator without any transition in the middle, which greatly reduces the delivery time of the materials. While improving production efficiency, it also reduces the number of heating fires and reduces energy consumption. , Improve forging quality and precision.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the front view of the present invention being provided with clamp one end;

Fig. 3 is the front view of the other end of the present invention;

Fig. 4 is the side view of the present invention being provided with clamp one end;

Fig. 5 is a schematic structural view of two clamps of the present invention in a loosened state;

Fig. 6 is a structural schematic diagram of two clamps of the present invention in the state of clamping the largest blank;

Fig. 7 is a schematic structural view of two clamps of the present invention in the state of clamping the smallest blank;

Marks in the figure: 1. Clamp rod, 2. The first double-hole bearing seat, 3. The second double-hole bearing seat, 4. Clamp, 5. Clamping cylinder, 6. Swing arm, 7. Gear, 8. Hinge Seat plate, 9, stiffener plate.

detailed description

As shown in Figures 1 to 7, a clamping tongs used for loading and unloading devices for annular heating furnaces according to the present invention includes two parallel clamp bars 1, and the parts near the middle of the two clamp bars 1 are sleeved on In the second double-hole bearing seat 3, two pincer rods 1 are located near the second double-hole bearing seat 3 and one end is sleeved in the second double-hole bearing seat, and the second double-hole bearing seat 3 and the second double-hole bearing seat All are provided with a hinged seat plate 8 for connecting with the mobile trolley in the loading and unloading device of the annular heating furnace. The second double-hole bearing seat 3 is hinged to the mobile trolley on the loading and unloading device of the annular heating furnace through the corresponding hinged seat plate 8, and the hinged seat plate 8 corresponding to the second double-hole bearing seat is hinged to one end of the lifting cylinder , the other end of the lifting cylinder is hinged with the mobile trolley on the loading and unloading device of the annular heating furnace, so that the end of the two clamp rods 1 away from the second double-hole bearing seat can be surrounded by the second double-hole bearing seat through the expansion and contraction of the lifting cylinder 3 Turn to realize lifting.

The ends of the two clamp rods 1 away from the second bearing housing are respectively provided with clamps 4 with opposite notches, and there is also a device between the two clamp rods 1 for controlling the rotation of the two clamp rods 1 to control the two clamps. The driving mechanism for the opening and closing of the pliers 4. The driving mechanism includes a clamping cylinder 5 arranged between the second double-hole bearing seat 3 and the second double-hole bearing seat. The telescoping end and the cylinder body end are respectively hinged with the swing arm 6 through the pin structure, and the other ends of the two swing arms 6 are respectively fixedly connected with the two pincer rods 1 correspondingly. The two clamp rods 1 are controlled to rotate synchronously through the push-pull action of the clamping cylinder 5, thereby controlling the clamping or loosening of the clamps 4 fixed on the two clamp rods 1. The combination of the above two movements can cooperate with the linear sliding of the mobile trolley on the frame to realize all the operations of feeding and discharging materials in the annular heating furnace.

In this embodiment, gears 7 are respectively provided on the ends of the two tong rods 1 away from the tongs 4 , and the two gears 7 are meshed to further ensure the consistency of opening and closing rotation of the two tongs 4 .

Since the height of the lower edge of the furnace door of the annular heating furnace is the same as the height of the clamp rod 1, and the furnace door is not perpendicular to the horizontal plane, but at an angle with the horizontal plane, so in order to avoid the occurrence of the blank and the furnace during the charging process In the case of mouth collision, because the blank is placed flat on the discharge place at the beginning, when the clamp lever 1 is lowered, the clamp 4 clamps the blank, and when the clamp lever 1 is lifted, the blank is lifted. The billet originally placed parallel to the horizontal plane will also form an angle with the horizontal plane, because the pincer bar 1 is perpendicular to the horizontal plane when it enters and exits the heating furnace, so this included angle is also the angle at which the pincer bar 1 falls. At this time, the uppermost end of the billet is lower than the upper edge of the furnace mouth, and the lowermost end of the billet is higher than the lower edge of the furnace mouth, and there must be enough space left and right. The calculation of the falling angle is 4°, which is in line with the situation introduced above.

Although taking a larger angle can also meet the above conditions, but in order to avoid too much useless work, from the perspective of reasonable utilization and energy saving, it is more reasonable to choose an angle of 4°. Since the blank is not parallel to the clamp rod 1 when it is clamped and lifted, in order to enable the clamp 4 to completely clamp the blank, the two clamps 4 in this embodiment are two identical and symmetrically arranged arcs. plate, the tops of the two arc-shaped plates are respectively fixed to the corresponding pincer bar 1 along the length direction of the corresponding pincer bar 1, and the central axis of the notch of the arc-shaped plate and the central axis of the corresponding pincer bar 1 are located in the same plane and have an angle of 4° angle. In this way, when clamping, the lower edge of the notch of the clamp 4 will be parallel to the blank, so that the blank can be completely clamped, so that the force on each part of the clamped position of the blank is uniform, and some problems due to uneven force are avoided. And the billet that causes is loose and slips off the problem, has strengthened the clamping ability of clamp 4. Further, in order to ensure the fixing strength of the two clamps 4 and the corresponding clamp rod 1, on the side of the clamp 4 opposite to the notch, a plurality of pieces are arranged at intervals along the length direction of the clamp 4 for connecting with the corresponding clamp rod 1. Fixed stiffener plate 9.

Since the clamp rod 1 has to work continuously under high temperature conditions, even if the best heat-resistant material is used, a series of problems such as softening and deformation of the clamp rod 1 will occur due to the temperature being too high to reach the limit value, so the cooling of the clamp rod 1 It is very important here. The two clamp rods 1 in this embodiment are both hollow rods, and water-cooled tubes are respectively arranged in the clamp rods 1. one end.

Claims (9)

1. A clamping tongs for loading and unloading device of an annular heating furnace, characterized in that it includes two parallel clamp rods (1), and the parts near the middle of the two clamp rods (1) are sleeved on the first In the double-hole bearing seat (2), one end of the two clamp rods (1) close to the first double-hole bearing seat (2) is sleeved in the second double-hole bearing seat (3), and the other end of the two clamp rods (1) Clamps (4) with opposite notches are respectively provided at one end, and there is also a device between the two clamp rods (1) to control the opening and closing of the two clamp rods (1) by controlling the rotation of the two clamp rods (1). the drive mechanism. 2. The clamping tongs for loading and unloading devices of annular heating furnaces according to claim 1, characterized in that: the two clamps (4) are two identical and symmetrically arranged arc-shaped plates, The tops of the two arc-shaped plates are respectively fixed to the corresponding tong bar (1) along the length direction of the corresponding tong bar (1), and the central axis of the notch of the arc-shaped plate is located in the same plane as the central axis of the corresponding tong bar (1) and an included angle of 4°. 3. The clamping tongs for loading and unloading devices of annular heating furnaces according to claim 2, characterized in that: on the side of the clamps (4) opposite to the notch, the clamps (4) ) at intervals in the lengthwise direction, a plurality of stiffener plates (9) for fixing with the corresponding tong bar (1) are provided. 4. The clamping tongs for loading and unloading devices of annular heating furnaces according to claim 1, characterized in that: the driving mechanism includes a clamping cylinder (5), and the telescopic end of the clamping cylinder (5) A swing arm (6) is respectively hinged to the end of the cylinder body, and the other ends of the two swing arms (6) are fixedly connected to the two clamp rods (1) respectively. 5. A clamping pliers for loading and unloading devices of annular heating furnaces according to claim 4, characterized in that: the clamping cylinders (5) are set on the first pair of clamping rods (1) between the double hole bearing housing (2) and the second double hole bearing housing (3). 6. A clamping pliers for loading and unloading devices of annular heating furnaces according to claim 4, characterized in that: the telescopic end and the cylinder body end of the clamping cylinder (5) are respectively connected to each other through the pin shaft structure. The swing arm (6) is hinged. 7. The clamping tongs for loading and unloading devices of annular heating furnaces according to claim 1, characterized in that: one end of the two tong rods (1) away from the tongs (4) is respectively provided with There are gears (7), and two gears (7) are meshed and connected. 8. The clamping tongs for loading and unloading devices of annular heating furnaces according to claim 1, characterized in that: the two tong rods (1) are both hollow rods, and in the tong rods (1) Water-cooling tubes are respectively provided, and the inlet and outlet of the water-cooling tubes are all arranged on the end of the clamp rod (1) away from the clamp (4). 9. A clamping pliers for loading and unloading device of annular heating furnace according to claim 1, characterized in that: the first double-hole bearing seat (2) and the second double-hole bearing seat (3) There are hinged seat plates (8) connected to the mobile trolley in the loading and unloading device of the annular heating furnace.