CN114733994A - Rivet riveting device and method for coke pushing rod of coke pusher - Google Patents

Abstract

The invention relates to a rivet riveting device and method for a coke pushing rod of a coke pusher, wherein the rivet riveting device for the coke pushing rod of the coke pusher comprises an upper screw rod and a lower screw rod which are coaxially and fixedly connected, the rotating directions of the upper screw rod and the lower screw rod are opposite, the upper end of the upper screw rod is connected with a first nut through threads, the upper end of the first nut is fixedly connected with a mandril which is coaxial with the upper screw rod, the upper end surface of the mandril is provided with a groove which is matched with the spherical surface at the bottom end of the rivet, and the lower end of the lower screw rod is connected with a second nut through threads. In the use process, the riveting device can be well fixed below the riveting hole, and the moving installation is convenient and quick in mean square; the riveting of the rivet after the integral heating is realized, so that the riveting hole is filled with the rivet, the riveting firmness is improved, the condition that the rivet is sheared due to a gap between the rivet and the hole wall of the riveting hole is avoided, and the service life of the rivet is greatly prolonged; the height is adjusted quickly and conveniently; after riveting, the purposes of quick adjustment and movement can be achieved.

Description

A rivet riveting device and method for a coke pusher and a coke rod

technical field

The invention relates to the technical field of equipment in the coking industry, in particular to the fixing of a coke push rod rack, in particular to a coke push car push rod rivet riveting device and method.

Background technique

The coke pusher is the supporting equipment of the large coke oven, among which the coke pusher is the key component of the coke pusher. The coke pusher has a frame structure. On the coke side, it is pushed to the coke quenching car through the coke guide grid of the coke blocking car, and the next step is entered.

During the operation of the coke push rod, power is given to the coke push rod through the transmission device, that is, the motor-reducer drives the main gear, and the main gear meshes with the rack on the upper part of the coke push rod. The focus lever moves forward or backward. Among them, the coke push rod rack has a section every two meters, and the whole push coke rod has a total of 19 sections. Each section of the coke push rod is riveted to the coke push rod body by rivets. Shearing will cause the rivet to break over time. After the rivet breaks, the fixing of the rack will be affected. In severe cases, the entire rack will fall off, the coke pusher will not move, and it will burn.

In view of the above situation, the workshop found out the fastening of rivets in time through spot inspection, and contacted and dealt with it in time when it was found to be broken. General treatment process: cut off the broken rivet and clean it up; insert a new rivet, and weld the rear end of the rivet to the shaft of the pusher rod to fix it; burn the upper end of the rivet with flame to make it soft; use special tools, The rivets are riveted by riveting with a sledgehammer. This method can riveted rivets, but due to the influence of the structure of the pusher and the limitation of heating (only 1/3 of the length of the rivet can be heated, that is, the length of the root of the rack is exposed), the rivet and the rivet of the pusher rod after the rivet is riveted. There is a 2mm gap in the hole, which cannot be completely filled. In the later use process, it is very easy to cause the secondary fracture of the rivet. According to the tracking, the rivets re-riveted by this method generally have a service life of 1.5 months to 2.5 months, which is far lower than the 12-month requirement of the normal service cycle. In addition, it is necessary to weld the rivet and the shaft of the coke push rod, and the operation is complicated.

At present, there is no better solution to the above problems without changing the original main body structure design of the pusher.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the present invention provides a rivet riveting device and method for a coke pusher rod, which not only does not need to weld the rivets, but also realizes all filling of the riveting holes by the rivets.

The invention is achieved through the following technical solutions, and provides a rivet riveting device for a coke pusher rod, comprising an upper screw rod and a lower screw rod that are coaxially fixed, the upper screw rod and the lower screw rod have opposite directions of rotation, and the upper end of the upper screw rod passes through A first nut is threadedly connected, the upper end of the first nut is fixedly connected with an ejector rod coaxial with the upper screw rod, the upper end surface of the ejector rod is provided with a groove adapted to the spherical surface of the bottom end of the rivet, and the lower end of the lower screw rod is threadedly connected with a Second nut.

Through the riveting device of this scheme, the rivet can be heated as a whole, and then the ejector rod can push the rivet upward by the action of the thread, so that the rivet passes through the riveting hole upward, and then the rivet is supported by the riveting device, and the rivet is riveted from the upper end of the rivet. , so that the rivet pier is thick and filled with the riveting hole, which avoids the problem that the rivet is easily sheared and fractured due to the gap between the rivet and the wall of the riveting hole; by setting the groove, the stability of placing the rivet is improved.

As an optimization, the upper screw and the lower screw are fixedly connected through the adjustment block, the lower end of the upper screw is fixed to the upper surface of the adjustment block, and the upper end of the lower screw is fixed to the lower surface of the adjustment block. In the optimized scheme, the upper screw rod and the lower screw rod are fixedly connected into one body through the set adjustment block, the structure is simple, and the rotation operation of the lower screw rod and the upper screw rod is convenient.

As an optimization, the adjustment block is cylindrical, and the adjustment block is coaxial with the upper screw rod and the lower screw rod. The setting of this optimization scheme makes it more convenient to realize the rotation of the upper screw and the lower screw by rotating the adjusting block.

As an optimization, the adjusting block is fixed with a force applying lever extending away from the adjusting block in the lateral direction. This optimized solution saves effort when turning the adjustment block by setting the force application lever, which makes the operation faster.

The solution also provides a riveting method using the above-mentioned rivet riveting device for the coke pusher and the coke pusher, which achieves the purpose of fast and firm riveting of the coke pusher and the coke rod rack, which specifically includes the following steps:

1. Place the riveting device in the frame of the pusher rod body, and make the top rod vertically positioned just below the riveting hole, and the second nut is supported on the upper surface of the bottom beam of the pusher rod body;

2. Rotate the lower screw, and use the action of the thread to move the ejector rod up, until the distance between the upper end of the ejector rod and the top beam of the pusher rod body matches the length of the rivet;

3. Heat the rivet as a whole to 650℃~700℃, then move the heated rivet to the top rod, and place the spherical body at the bottom of the rivet in the groove on the top rod;

4. Continue to rotate the lower screw, so that the ejector rod continues to move up, and drives the rivet upwards through the riveting hole, and the spherical body at the bottom of the rivet is pushed to the top beam of the pusher rod;

5. Percussion riveting is performed on the part of the rivet that penetrates the rack upwards, and the lateral size of the rivet increases under the action of percussion, filling the entire riveting hole;

6. Rotate the lower screw to move the top rod down, and take out the riveting device for riveting at the next position.

The beneficial effects of the invention are as follows: during use, the riveting device can be well fixed under the riveting hole, and the moving and installation are convenient and fast; the riveting after the whole heating of the rivet is realized, so that the rivet fills the riveting hole, and the riveting is improved. At the same time, it avoids the situation that the rivet is cut due to the gap between the rivet and the wall of the riveting hole, which greatly prolongs the service life of the rivet; the left and right of the thread is used to drive the rivet to rise, which is easy to operate and realizes rapid riveting. At the same time, the function of the thread is used to provide support for the rivets, and there is no need to weld the rivets with the pusher shaft, which ensures the integrity of the pusher shaft, and it is quick and convenient to adjust the height; after the riveting is completed, it can also be quickly adjusted and moved. the goal of.

Description of drawings

Fig. 1 is the structural representation of the riveting device of the present invention;

Fig. 2 is the use state diagram of the riveting device of the present invention;

Shown in the picture:

1. Ejector rod, 2. First nut, 3. Upper screw rod, 4. Adjustment block, 5. Lower screw rod, 6. Second nut, 7. Rack, 8. Push coke rod body, 9. Rivet.

Detailed ways

In order to clearly illustrate the technical features of this solution, the solution will be described below through specific implementations. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in Figure 1, a rivet riveting device for a coke pusher for a coke pusher includes an upper screw 3 and a lower screw 5 that are coaxially fixed. The upper screw and the lower screw have opposite directions of rotation. The screw is a left-hand screw. The connection between the upper screw and the lower screw is as follows: the upper screw and the lower screw are fixedly connected through the adjustment block 4, the lower end of the upper screw is fixed to the upper surface of the adjustment block, and the upper end of the lower screw is fixed to the lower surface of the adjustment block .

The adjustment block 4 is cylindrical, and the adjustment block is coaxial with the upper screw rod and the lower screw rod. The outer side of the adjustment block is fixed with a number of force-applying rods extending away from the adjusting block in the lateral direction, and the force-applying rods are evenly distributed in the circumferential direction. .

The upper end of the upper screw rod is connected with a first nut 2 through a thread, and the upper end of the first nut is fixed with an ejector rod 1 coaxial with the upper screw rod. The lower end of the screw rod is connected with a second nut 6 through a thread. By arranging the grooves, the rivet 9 is stably supported, and when the adjusting block is rotated, the ejector rod is raised or lowered under the action of the thread. The diameter of the groove is 0.5~1mm larger than the diameter of the arc at the bottom end of the rivet, which is convenient for the placement of the rivet and does not slip; the depth of the groove is smaller than the diameter of the arc at the bottom end of the rivet by 0.5~1mm, so that the rivet can fit perfectly with the lower surface of the riveting hole. , to ensure the quality of riveting.

The riveting method performed by using the rivet riveting device for the coke pusher of the coke pusher of the present embodiment includes the following steps:

1. Process riveting holes in the rack 7 and the top beam of the coke push rod, place the riveting device in the frame of the coke push rod body 8, and make the top rod vertically located just below the riveting hole, and the second nut Supported on the upper surface of the bottom beam of the pusher shaft;

2. Rotate the adjusting block to make the lower screw rotate, and use the action of the thread to move the ejector rod upwards until the distance between the upper end of the ejector rod and the top beam of the pusher rod body matches the length of the rivet, that is, the upper end of the ejector rod and the pusher rod The spacing between the top beams of the rod body is greater than the length of the rivet by 1~3mm;

3. Heat the rivet as a whole to 650℃~700℃, then move the heated rivet to the top rod with rivet pliers, and place the spherical body at the bottom of the rivet in the groove on the top rod;

4. Quickly rotate the adjustment block to make the lower screw continue to rotate, the ejector rod continues to move up, and drives the rivet upwards through the riveting hole, and the spherical body at the bottom end of the rivet pushes against the top beam of the pusher rod, and the upper surface of the ejector rod is riveted with the rivet. The lower surface of the hole is in close contact, and the riveting device is locked;

5. Use a riveting machine or a riveting hammer to tap and rive the part of the rivet that goes out of the rack upwards. The lateral size of the rivet increases under the action of tapping, filling the entire riveting hole and ensuring the quality of riveting;

6. Rotate the lower screw to move the top rod down, and take out the riveting device for riveting at the next position.

The beneficial effects of this embodiment can be known according to the above-mentioned technical measures:

1. The rivet can be heated as a whole and riveted quickly, which reduces the influence of uneven heating and slow riveting on the riveting quality.

2. The riveting device can be conveniently and quickly fixed under the riveting hole, preventing the phenomenon of welding the push rod shaft due to fixed rivets, and also preventing the phenomenon that the rivets are not fixed firmly and affect the riveting quality.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be realized by or using the existing technology, and will not be repeated here; the above embodiments and drawings are only used to illustrate the technical solutions of the present invention, not It is a limitation of the present invention. The present invention is described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that changes, modifications, The additions or substitutions do not depart from the spirit of the present invention, and should also belong to the protection scope of the claims of the present invention.

Claims (5)

1. A coke pusher rod rivet riveting device, characterized in that it comprises an upper screw rod (3) and a lower screw rod (5) that are coaxially fixed, the upper screw rod and the lower screw rod have opposite directions of rotation, and the upper end of the upper screw rod A first nut (2) is threadedly connected, the upper end of the first nut is fixed with an ejector rod (1) coaxial with the upper screw rod, and the upper end surface of the ejector rod is provided with a groove adapted to the spherical surface of the bottom end of the rivet. The lower end of the screw rod is connected with a second nut (6) through a thread. 2. A rivet riveting device for a coke pusher push rod according to claim 1, characterized in that: the upper screw rod and the lower screw rod are fixedly connected by the adjustment block (4), and the lower end of the upper screw rod is fixed to the bottom of the adjustment block. On the upper surface, the upper end of the lower screw rod is fixedly connected to the lower surface of the adjusting block. 3 . The rivet riveting device for a coke pusher push rod according to claim 2 , wherein the adjustment block ( 4 ) is cylindrical, and the adjustment block is coaxial with the upper screw rod and the lower screw rod. 4 . 4 . The rivet riveting device for a coke pusher rod of a coke pusher according to claim 2 , wherein the adjusting block is fixed with a force applying rod extending away from the adjusting block in the lateral direction. 5 . 5. a riveting method using any one of claims 1 to 4, which is characterized in that it comprises the steps: (1) Place the riveting device in the frame of the coke rod body, and make the top rod vertically located just below the riveting hole, and the second nut is supported on the upper surface of the bottom beam of the coke rod body; (2) Rotate the lower screw, and use the action of the thread to move the ejector rod up, until the distance between the upper end of the ejector rod and the top beam of the pusher rod body matches the length of the rivet; (3) Heat the rivet as a whole to 650℃~700℃, then move the heated rivet to the top rod, and place the spherical body at the bottom of the rivet in the groove on the top rod; (4) Continue to rotate the lower screw, so that the ejector rod continues to move up, driving the rivet upwards through the riveting hole, and the spherical body at the bottom of the rivet reaches the top beam of the pusher rod; (5) Percussion riveting is performed on the part of the rivet that penetrates the rack upward, and the lateral size of the rivet increases under the action of percussion, filling the entire riveting hole; (6) Rotate the lower screw to move the ejector rod down, and take out the riveting device for riveting at the next position.

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