Wood plug screw shaft mounting structure

Abstract

The utility model discloses a wooden plug screw shaft mounting structure. The spiral shaft is provided with a material conveying section and a material compressing section, the power output shaft is used for driving the spiral shaft to rotate, and a connecting mechanism is arranged between the spiral shaft and the power output shaft. The connecting mechanism comprises a shaft end component, a shaft head arranged on the spiral shaft, an outer ring body installed on the shaft head and in interference fit with the shaft head, and a clamping structure arranged between the shaft head and the shaft end component and matched with each other. The shaft head and the shaft end component are clamped through the clamping structure, and the shaft end component and the outer ring body are fixedly installed through a fastener. The utility model has the advantages that: the mounting precision is ensured, the outer ring body is made of an easy-to-process material, so that the processing is convenient, the processing time is saved, the manufacturing cost is low, the outer ring body can be independently replaced after the outer circle is abraded, and the cost is further saved; and the installation convenience and the positioning accuracy are further improved, so that the use reliability is improved, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of component structures in plug screw feeding system in artificial board and pulping production line, specifically a kind of plug screw shaft mounting structure. BACKGROUND

[0002] Plug screw feeding system is the main equipment in artificial board and pulping production line, plug screw shaft is divided into axial straight section and taper section, straight section transports material, taper section compresses material to form plug. The equipment removes water, air and other water-soluble substances in wood chips by extrusion to increase the specific surface area of wood chips, thereby reducing the energy consumption of subsequent grinding section. Plug screw extrusion forms plug to seal the steam in digester without leakage. In the production process, screw shaft is easily worn.

[0003] In order to delay the wear of screw shaft and prolong the service life of screw shaft, the plug screw shaft in the prior art is made of wear-resistant material by integral casting and quenching treatment. The original screw shaft has high rigidity, so that special tools need to be used when machining the shaft head, especially the threaded hole, which not only increases the cost of tools, but also increases the machining time and the machining efficiency is very low. High-strength tools are easily damaged during machining, frequent replacement of tools increases material consumption, and affects machining precision and work efficiency. SUMMARY

[0004] The utility model solves the technical problem to provide a kind of plug screw shaft mounting structure with simple structure, it is easy to process and the manufacturing cost is low, and the use effect is good.

[0005] In order to solve the above technical problems, the plug screw shaft mounting structure of the utility model includes a screw shaft with a material conveying section and a material compression section, and a power output shaft for driving the screw shaft to rotate. A connecting mechanism is provided between the screw shaft and the power output shaft. The connecting mechanism includes a shaft end part of the power output shaft, a shaft head provided on the screw shaft for matching the shaft end part of the power output shaft, an outer ring body installed on the shaft head in interference fit, and a clamping structure provided between the shaft head and the shaft end part for mutual cooperation. The shaft head and the shaft end part are clamped by the clamping structure and the shaft end part and the outer ring body are fixedly installed by the fastener.

[0006] The screw shaft has a conical frustum at the root of the shaft head. A limiting surface is formed at the joint surface between the shaft head and the conical frustum. The outer ring body is pressed against the limiting surface.

[0007] The outer ring body is provided with threaded holes, and the shaft end part is provided with mounting holes corresponding to the threaded holes. The fastener connects the mounting holes and the threaded holes.

[0008] The outer ring body is made of a quenched and tempered alloy steel material, and the spiral shaft is integrally casted by using a wear-resistant material.

[0009] The material conveying section is located in the feeding box, and the material compressing section is located in the compression shell.

[0010] The clamping structure is a shaft head flat groove formed on the end face of the shaft head and a shaft end boss arranged on the end face of the shaft end part and matched with the shaft head flat groove.

[0011] The clamping structure is a flat-shaped boss arranged on the end face of the shaft head and a shaft end flat-shaped groove arranged on the end face of the shaft end part and matched with the flat-shaped boss.

[0012] The clamping structure is an inner flat-shaped groove formed on the end face of the shaft head and an outer flat-shaped groove arranged on the end face of the shaft end part and a positioning key arranged between the inner flat-shaped groove and the outer flat-shaped groove.

[0013] The clamping structure further comprises a concave step formed on the end face of the outer ring body and a shaft end boss arranged on the end face of the shaft end part and matched with the concave step.

[0014] The clamping structure further comprises an end face boss arranged on the end face of the outer ring body and a shaft end groove arranged on the end face of the shaft end part and matched with the end face boss.

[0015] The utility model discloses the advantages are:

[0016] (1) the shaft head of the connecting part of the spiral shaft and the outer ring body of the interference fit with the shaft head, so the original spiral shaft can be divided into two parts and processed, the part of the spiral shaft adopts the original wear-resistant material, and the outer ring body adopts other easy-to-process materials to facilitate the processing of various sizes after assembly, on the one hand, the installation precision is ensured, and on the other hand, the outer ring body is easy to process and saves processing time, so that the manufacturing cost is low, and the outer ring body can be replaced alone after the outer circle wears, further saving the cost.

[0017] (2) the shaft end part and the shaft head of the spiral shaft are clamped through the clamping structure and fixed and installed by the fastener, so that the installation is facilitated, the convenience of installation and the accuracy of positioning are further improved, the reliability of use is improved, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the use state structure schematic drawing of the utility model cork spiral shaft mounting structure;

[0019] Figure 2 It is the front view structure schematic drawing of the utility model embodiment one;

[0020] Figure 3 It isFigure 2 Amplification structure schematic view of I at the place of

[0021] Figure 4 Main view structure schematic view of the second embodiment of the utility model;

[0022] Figure 5 Main view structure schematic view of the third embodiment of the utility model;

[0023] Figure 6 Side view structure schematic view of the spiral shaft in the third embodiment of the utility model. Specific implementation

[0024] The wood plug spiral shaft mounting structure of the utility model is further explained in detail below in combination with the drawings and specific implementation. Embodiment one

[0025] As Figures 1-3 shown, the wood plug spiral shaft mounting structure of the embodiment includes a spiral shaft 3 with a material conveying section 1 and a material compressing section 2 and a power output shaft 4 for driving the spiral shaft to rotate, a connecting mechanism 5 is arranged between the spiral shaft 3 and the power output shaft 4, the connecting mechanism 5 includes an axle end part 8 of the power output shaft 4, a shaft head 6 arranged on the spiral shaft 3 for matching the axle end part of the power output shaft 4, an outer ring body 7 installed on the shaft head 6 for interference fit with the shaft head, and a clamping structure 19 arranged between the shaft head 6 and the axle end part 8 for mutual cooperation, wherein in the embodiment, the outer ring body 6 is made of quenched and tempered alloy steel material for facilitating cutting processing, the spiral shaft 3 is integrally cast into shape by using wear-resistant material, thus the specific size of the shaft head 6 and the outer ring body 7 can be processed after being assembled, in the embodiment, the clamping structure 19 includes a shaft head flat groove 14 opened on the end face of the shaft head 6 and an axle end boss 15 arranged on the end face of the axle end part 8 for matching the shaft head flat groove, the clamping structure 19 further includes a concave step 12 opened on the end face of the outer ring body 7 and the axle end boss 15 arranged on the end face of the axle end part 8 for matching the concave step 12 to improve the installation precision, the outer ring body 7 is arranged with a threaded hole 11, the axle end part 8 is arranged with a mounting hole corresponding to the threaded hole, the shaft head 6 and the axle end part 8 are clamped by the clamping structure and are screwed on the threaded hole by a fastener passing through the mounting hole, thus the axle end part 8 and the outer ring body 7 are fixedly installed.

[0026] Further, the spiral shaft 3 has a conical frustum 9, the shaft head is integrally formed on the side end face of the conical frustum (as Figure 2 shown, the shaft head is on the right side of the conical frustum), and a limiting face 10 is formed at the joint surface between the shaft head 6 and the conical frustum 9, and the outer ring body 7 is pressed on the limiting face 10.

[0027] For its specific application, as Figure 1As shown, the wood plug screw feeding system includes a motor, a reducer connected to the motor output shaft, and a bearing housing connected to the reducer output shaft. The shaft end component 8 in the above-mentioned wood plug screw shaft mounting structure is located on the end of the power output shaft extending from the bearing housing. After the wood plug screw shaft is installed in conjunction with the power output shaft of the bearing housing through the connecting mechanism, the material conveying section 1 of the screw shaft is located in the feed box 21, and the material compression section 2 is located in the conical compression shell 22. Example 2

[0028] like Figure 4 As shown, the installation structure of the cork screw shaft in this embodiment is largely the same as that in Embodiment 1. The difference is that the snap-fit ​​structure 19 consists of a flat protrusion 16 on the end face of the shaft head 6 and a flat groove 17 on the end face of the shaft end component 8 that mates with the flat protrusion. The snap-fit ​​structure 19 also includes a concave step 12 on the end face of the outer ring body 7 and a shaft end boss 15 on the end face of the shaft end component 8 that mates with the concave step 12. The concave step 12 and the shaft end boss 15 further improve the docking and installation accuracy. Example 3

[0029] like Figure 5 As shown, the installation structure of the cork screw shaft in this embodiment is largely the same as that in Embodiment 1. The difference is that the snap-fit ​​structure 19 consists of an inner flat groove 18 on the end face of the shaft head 6, an outer flat groove 20 on the end face of the shaft end component 8, and a positioning key 23 placed between the inner flat groove 18 and the outer flat groove 20. The snap-fit ​​structure 19 also includes an end face boss on the end face of the outer ring body 7 and a shaft end groove on the end face of the shaft end component 8 that cooperates with the end face boss. The end face boss and shaft end groove further improve the docking installation accuracy.

[0030] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A cork screw shaft mounting structure comprising a screw shaft (3) having a material conveying section (1) and a material compressing section (2) and a power output shaft (4) for driving the screw shaft in rotation, characterized in that: The connecting mechanism (5) is arranged between the spiral shaft (3) and the power output shaft (4), and comprises a shaft end part (8) of the power output shaft (4), a shaft head (6) arranged on the spiral shaft (3) and matched with the shaft end part of the power output shaft (4), an outer ring body (7) mounted on the shaft head (6) and in interference fit with the shaft head (6), and a clamping structure (19) arranged between the shaft head (6) and the shaft end part (8) and matched with each other.

2. The wood plug screw shaft mounting structure according to claim 1, characterized by: The spiral shaft (3) has a frustum (9) at the root of the shaft head (6), and a limiting surface (10) is formed at the joint surface between the shaft head (6) and the frustum (9), and the outer ring body (7) is pressed against the limiting surface (10).

3. The wood plug screw shaft mounting structure according to claim 1 or 2, characterized by: The outer ring body (7) is arranged with a threaded hole (11), the shaft end part (8) is arranged with a mounting hole corresponding to the threaded hole, and the fastener is connected through the mounting hole and the threaded hole.

4. The wood plug screw shaft mounting structure according to claim 3, characterized by: The outer ring body (7) is made of quenched and tempered alloy steel, and the spiral shaft (3) is integrally casted by wear-resistant material.

5. The wood plug screw shaft mounting structure according to claim 1, 2 or 4, characterized by: The material conveying section (1) is located in the feeding box (21), and the material compression section (2) is located in the compression shell (22).

6. The wood plug screw shaft mounting structure according to claim 5, characterized by: The clamping structure (19) is a shaft head flat groove (14) formed on the end face of the shaft head (6) and a shaft end boss (15) arranged on the end face of the shaft end part (8) and matched with the shaft head flat groove.

7. The wood plug screw shaft mounting structure according to claim 5, characterized by: The clamping structure (19) is a flat-shaped protrusion (16) arranged on the end face of the shaft head (6) and a shaft end flat-shaped groove (17) arranged on the end face of the shaft end part (8) and matched with the flat-shaped protrusion.

8. The wood plug screw shaft mounting structure according to claim 5, characterized by: The clamping structure (19) is an inner flat-shaped groove (18) formed on the end face of the shaft head (6) and an outer flat-shaped groove (20) arranged on the end face of the shaft end part (8) and a positioning key (23) arranged between the inner flat-shaped groove (18) and the outer flat-shaped groove (20).

9. The wood plug and screw shaft mounting structure according to claim 1, 2, 4, 6, 7 or 8, characterized by: The clamping structure (19) further comprises a concave step (12) formed on the end face of the outer ring body (7) and a shaft end boss (15) arranged on the end face of the shaft end part (8) and matched with the concave step (12).

10. The wood plug and screw shaft mounting structure according to claim 1, 2, 4, 6, 7 or 8, characterized by: The clamping structure (19) further comprises an end face boss arranged on the end face of the outer ring body (7) and a shaft end groove arranged on the end face of the shaft end part (8) and matched with the end face boss.

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