CN115870727A - Auxiliary assembly device for the spiral shaft of the horizontal steaming tube and an assembly method for the spiral shaft of the horizontal steaming tube - Google Patents

Abstract

The invention discloses an auxiliary assembly device for a spiral shaft of a horizontal steaming tube and an assembly method for the spiral shaft of a horizontal steaming tube. It includes a support sleeve that can be fitted on the end of the screw shaft, a plurality of support frames uniformly arranged radially along the edge of the support sleeve, and a rolling device installed at the bottom of each support frame. The support sleeve is fitted on the end of the screw shaft and can The rolling device is supported on the inner wall of the cylinder so as to realize auxiliary support during the assembly process of the screw shaft. The advantages are: the stability of the assembly is greatly increased, not only the assembly is convenient and fast, the strength of the laborer is greatly reduced, the assembly time is effectively shortened, the assembly efficiency is improved, and the pressure on the cylinder during the assembly process of the screw shaft can be effectively reduced , while avoiding the collision of the blades of the screw shaft against the barrel during the assembly process, making the entire assembly process safe and reliable, and avoiding the risk of damage or damage to various components during the assembly process.

Description

Auxiliary assembly device for the spiral shaft of the horizontal steaming tube and an assembly method for the spiral shaft of the horizontal steaming tube

technical field

The invention relates to an assembly technology of horizontal steaming tube components in wood-based panels or papermaking equipment, in particular to an auxiliary assembly device for a horizontal steaming tube spiral shaft and a method for assembling the horizontal steaming tube spiral shaft.

Background technique

In the wood-based panel or papermaking industry, the function of the horizontal steaming tube is to cook and soften the raw materials (wooden or non-wooden) within a certain temperature range for a certain period of time according to the process requirements, and provide them to the device used in the next process. .

As shown in Figure 1 and Figure 2, the specific structure of the existing horizontal steam pipe is a circular cylinder 101 arranged horizontally, a raw material inlet A is arranged at the upper opening of the cylinder 101, and a raw material outlet B is arranged at the lower opening , end caps 102 are installed at both ends of the cylinder 101, the screw shaft 103 is installed in the cylinder 101, bearings 104 are installed at both ends of the screw shaft 103, the bearings 104 are installed on the bearing seat 105, and the bearing seat 105 is supported by The seat 106 fixes the screw shaft 103 on the end cover 102, and a driven sprocket 107 is installed at one end of the screw shaft 103; the driving drive sprocket 110 on the reducer 109 is driven by the operation of the motor 108, and the driving sprocket 110 is driven by a chain 111 The driven sprocket 107 drives the screw shaft 103 to rotate, and the raw material that enters the horizontal steaming tube from the raw material inlet A is transported forward, and is transported from the raw material outlet B to the next process.

It can be seen from the above structure that the cylinder body and the screw shaft of the horizontal steaming tube are very large in size and heavy in weight. It is very difficult in the cylinder. Traditionally, it is operated by crane hoisting and manual assisted handling. During the operation, it is necessary to constantly adjust the hoisting points to complete the assembly. The entire operation process is extremely time-consuming and laborious. In the process of operation, if you accidentally touch the cylinder wall, it will cause damage to the cylinder wall or the blades of the screw shaft. Movement occurs, and thus the problem of safety accidents occurs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a horizontal steaming tube screw shaft auxiliary assembly device and a horizontal steaming tube screw shaft assembly device that not only make the assembly operation very convenient and have high operating efficiency, but also reduce damage and improve assembly safety and reliability. method.

In order to solve the above-mentioned technical problems, the auxiliary assembly device for the screw shaft of the horizontal steaming tube of the present invention includes a support sleeve that can be sleeved on the end of the screw shaft, a plurality of support frames that are evenly arranged radially along the edge of the support sleeve, and installed on each support The rolling device at the bottom of the frame, the supporting sleeve is set on the end of the screw shaft and can make the rolling device support on the inner wall of the cylinder so as to realize the auxiliary support during the assembly process of the screw shaft.

The rolling device is a bearing installed at the bottom of the support frame.

The bottom of the support frame is provided with a mounting groove, and the bearing is installed in the mounting groove through a pin shaft so that the bearing can be pressed against the inner wall of the cylinder.

Adjacent support frames are arranged staggered in the axial direction of the sleeve.

A counterweight located at the opposite end of the support frame can also be fitted on the screw shaft.

A method for assembling the spiral shaft of a horizontal steaming tube based on an auxiliary assembly device for the spiral shaft of the horizontal steaming tube, comprising the following steps:

A. Set the support sleeve on the end of the screw shaft;

B. Find the first center-of-gravity position of the screw shaft as the lifting point, use the crane to lift at this center-of-gravity position to a roughly horizontal state, and the bearing at the bottom of the support frame falls on the inner wall of the cylinder so that the pressure acts on the inner wall of the cylinder, and then use The hand chain hoist pulls the screw shaft into the cylinder until half the length of the screw shaft is loaded into the cylinder. During the lifting process, the blades of the screw shaft must not contact the cylinder;

C. Then move the lifting point to the rear side of the screw shaft to find the second center of gravity of the screw shaft. At the same time, add a weight to the rear end of the screw shaft to reduce the pressure of the screw shaft on the cylinder, and use the lifting force of the crane to lift the screw shaft Continue to move into the barrel;

D. Repeat step C, continue to move the lifting point to the back of the screw shaft and find the subsequent center of gravity of the screw shaft, then continue to increase the counterweight to reduce the pressure of the screw shaft on the cylinder, and continue to move the screw shaft into the cylinder;

E. After the screw shaft has completely entered the cylinder, move the lifting point to the rearmost end of the screw shaft, adjust the axial position of the screw shaft, and position it accurately in the cylinder.

After step E, after precise positioning, install the bearing seat and the matching flange end cover of the bearing seat in the positioning state.

In the step A, add counterweights as needed.

The advantages of the present invention are:

By setting the auxiliary support at the front end of the screw shaft and the counterweight at the rear end, combined with the crane lifting, the stability of the assembly is greatly increased. It is not only convenient and quick to assemble, but also greatly reduces the strength of the laborer. In order to effectively shorten and improve the assembly efficiency, it can also effectively reduce the pressure on the cylinder during the assembly process of the screw shaft, and at the same time avoid the collision between the blades of the screw shaft and the cylinder during the assembly process, making the entire assembly process safe and reliable, and avoiding the There is a risk of damage or damage to each component during the assembly process. In addition, it is also convenient to adjust the assembly position in real time during the assembly process.

Description of drawings

Fig. 1 is the front view structure schematic diagram of horizontal evaporating tube;

Fig. 2 is the top view structure schematic diagram of horizontal evaporating tube;

Fig. 3 is the schematic diagram of the front view of the auxiliary support in the present invention;

Fig. 4 is a side view structural schematic diagram of the auxiliary support in the present invention;

Fig. 5 is a schematic structural diagram of the initial lifting state in the present invention;

Fig. 6 is the schematic structural diagram of the hoisting state of step B in the present invention;

Fig. 7 is a schematic structural diagram of the hoisting state of step C in the present invention;

Fig. 8 is a schematic structural diagram of the hoisting state of step D in the present invention;

FIG. 9 is a schematic diagram of the enlarged structure at A in FIG. 3 .

Detailed ways

The auxiliary assembly device for the screw shaft of the horizontal steaming tube and the method for assembling the screw shaft of the horizontal steaming tube of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Embodiment one:

As shown in the figure, in order to ensure that when the screw shaft is installed in the cylinder, the blades of the screw shaft will not collide with or rub against the cylinder, the auxiliary assembly device for the screw shaft of the horizontal steaming tube of the present invention includes a The support sleeve 2, each support frame 3 evenly arranged radially along the edge of the support sleeve and the rolling device 4 installed at the bottom of each support frame, the support sleeve 2 is sleeved on the end of the screw shaft 1 and can make the rolling device 4 It is supported on the inner wall of the cylinder so as to realize the auxiliary support during the assembly process of the screw shaft. Since the movement of the support frame relative to the cylinder by the rolling device 4 is rolling friction when it is loaded into the cylinder, there will be no hindrance during assembly, and the movement is stable. There will be no damage to the cylinder, and at the same time, the adjacent support frames 3 are arranged in a staggered manner in the axial direction of the sleeve. In this embodiment, the support frames 3 are distributed on two planes (as shown in Figure 4), so that It is ensured that when the support frame with the rolling device 4 moves in the cylinder, two points must be able to fall on the inner wall of the cylinder, thereby improving the reliability and stability of use.

Further, said rolling device 4 is a bearing installed at the bottom end of the support frame. For its installation structure, the bottom of the support frame 3 is provided with a mounting groove 5, and the bearing is installed in the mounting groove 5 through a pin shaft 6 and makes the bearing Can be pressed against the inner wall of the cylinder.

Furthermore, the counterweight 7 located at the opposite end of the support frame can also be fitted on the screw shaft 1 according to actual needs.

Embodiment two:

The method for assembling the spiral shaft of the horizontal steaming tube based on the auxiliary assembly device for the screw shaft of the horizontal steaming tube of the present invention, when assembling the horizontal steaming tube, the arrangement of installing the screw shaft into the cylinder adopts the method of one lifting and one pulling, which includes the following steps :

A. Position the cylinder in the installation site, take out the screw shaft to be assembled, and then set the support sleeve 2 on the front end of the screw shaft. When assisting support, enter from the direction of the discharge port. Such a support structure is in the The post-assembly process can avoid the gap of the lower opening;

B. First, find the first center of gravity of the screw shaft 1 as the lifting point, and use the crane to lift it at the center of gravity to a roughly horizontal state. After the support frame enters the cylinder, slightly lift the rear end of the screw shaft to make the bottom of the support frame The bearing falls on the inner wall of the cylinder, so that the pressure acts on the inner wall of the cylinder, and the screw shaft can be put into the cylinder in a roughly horizontal state;

Secondly, use a hand chain hoist to pull the front end of the screw shaft, and cooperate with the driving to pull the screw shaft 1 into the cylinder until half of the length of the screw shaft 1 is loaded into the cylinder. During the lifting process, the blades of the screw shaft 3 must not be in contact with the cylinder. Contact, the screw shaft only falls on the cylinder through the bearing at the front end, and all the forces act on the inner wall of the cylinder. To ensure that the screw shaft can be smoothly loaded into the cylinder, it is necessary to reduce the force acting on the inner wall of the cylinder;

C. After the lifting point reaches the rear end face of the cylinder, move the lifting point to the rear side of the screw shaft 3 to find the second center of gravity of the screw shaft, and at the same time add a weight 7 to the rear end of the screw shaft 1 to lighten the screw shaft For the pressure on the cylinder, the screw shaft 1 continues to move into the cylinder by the lifting force of the crane;

D. After the lifting point reaches the rear end face of the cylinder again, repeat step C, continue to move the lifting point to the rear side of the screw shaft 1 and find the subsequent center of gravity of the screw shaft, and then continue to increase the counterweight 7 to reduce the screw shaft. Cylinder pressure, the screw shaft 1 continues to move into the cylinder;

E. After the screw shaft 1 has completely entered the cylinder, move the lifting point to the rearmost end of the screw shaft 1, adjust the axial position of the screw shaft, and position it accurately in the cylinder;

Step E: After precise positioning, install the bearing seat and the flange end cover matching the bearing seat and other components under the positioning state.

Further, corresponding counterweights 7 can also be added in step A as required.

Claims (8)

1. An auxiliary assembly device for the spiral shaft of a horizontal steaming tube, including a support sleeve (2) that can be placed on the end of the spiral shaft (1), a plurality of support frames (3) that are evenly arranged radially along the edge of the support sleeve, and The rolling device (4) installed at the bottom of each support frame, the support sleeve (2) is set on the end of the screw shaft (1) and enables the rolling device (4) to be supported on the inner wall of the cylinder to realize the screw shaft Auxiliary support during assembly. 2. The auxiliary assembly device for the screw shaft of the horizontal steaming tube according to claim 1, characterized in that: the rolling device (4) is a bearing installed at the bottom of the support frame. 3. The auxiliary assembly device for the spiral shaft of the horizontal steaming tube according to claim 2, characterized in that: the bottom of the support frame (3) is provided with a mounting groove (5), and the bearing is installed on the Install the groove (5) and make the bearing press on the inner wall of the cylinder. 4. The auxiliary assembly device for the screw shaft of the horizontal steaming tube according to claim 1, 2 or 3, characterized in that the adjacent support frames (3) are arranged in a staggered manner in the axial direction of the shaft sleeve. 5. The auxiliary assembly device for the screw shaft of the horizontal steaming tube according to claim 4, characterized in that: the screw shaft (1) can also be fitted with a counterweight (7) at the opposite end of the support frame. 6. A horizontal steaming tube screw shaft assembly method based on the horizontal steaming tube screw shaft auxiliary assembly device, characterized in that it comprises the following steps: A. Set the support sleeve (2) on the end of the screw shaft (1); B. Find the first center-of-gravity position of the screw shaft (1) as the lifting point, use the crane to lift at this center-of-gravity position to a roughly horizontal state, and the bearing at the bottom of the support frame (3) falls on the inner wall of the cylinder so that the pressure acts on the cylinder On the inner wall, pull the screw shaft (1) into the cylinder with a hand chain hoist until half the length of the screw shaft (1) is loaded into the cylinder. During the lifting process, the blades of the screw shaft (1) must not be in contact with the cylinder. physical contact, C. Then move the lifting point to the rear side of the screw shaft (1) to find the second center of gravity of the screw shaft, and at the same time add a weight (7) to the rear end of the screw shaft (1) to reduce the pressure of the screw shaft on the cylinder , continue to move the screw shaft (1) into the cylinder using the lifting force of the crane; D. Repeat step C, continue to move the lifting point to the rear side of the screw shaft (1) and find the subsequent center of gravity of the screw shaft, then continue to increase the counterweight (7) to reduce the pressure of the screw shaft on the cylinder, and move the screw shaft (1) Continue to move into the barrel, E. After the screw shaft (1) has completely entered the cylinder, move the lifting point to the rearmost end of the screw shaft (1), adjust the axial position of the screw shaft, and position it accurately in the cylinder. 7. The method for assembling the screw shaft of the horizontal steaming tube based on the auxiliary assembly device for the screw shaft of the horizontal steaming tube according to claim 6, characterized in that: after step E, after the precise positioning, the bearing seat support member is installed in the positioned state. 8. The method for assembling the spiral shaft of the horizontal steaming tube based on the auxiliary assembly device for the screw shaft of the horizontal steaming tube according to claim 6, characterized in that: in the step A, a counterweight (7) is added as needed.

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