Building block type single screw

Abstract

The utility model provides a building block type single screw which comprises a driving handle, a core shaft, a plurality of thread elements and a tail shaft, the thread elements are sleeved on the core shaft and rotate along with the core shaft, the driving handle is connected with one end of the core shaft, and the tail shaft is connected with the other end of the core shaft and locks the thread elements on the core shaft. The screw rod is formed by splicing the thread elements, when the screw flights are corroded and abraded, only the corresponding thread elements need to be replaced, and the production cost is effectively reduced; when a production formula is changed and optimized, only corresponding threaded elements need to be replaced, the whole screw does not need to be replaced, and the production cost is effectively reduced; compared with a whole screw, the thread element is more convenient to machine, machining equipment is smaller, and the machining difficulty is reduced to a certain degree.

Description

Technical Field

[0001] The utility model relates to a building block type single screw. Background Art

[0002] At present, most of the screws of single-screw pipe processing equipment still use integrated screws. Since the screw is used in a high temperature and highly corrosive environment, the screw ridges become severely worn after a period of use, and the screw ridges can only be repaired. However, after multiple repairs, the screw cannot meet the current production process, and the entire screw can only be replaced, resulting in a high material production cost. Therefore, the structure of the screw ridges needs to be further improved.

[0003] When faced with product optimization, the one-piece screw cannot meet its production process, and the entire screw can only be replaced, resulting in higher material production costs. Therefore, the structure of the screw rib needs further improvement. Utility Model Content

[0004] The utility model provides a building block type single screw, comprising a driving handle, a core shaft, a plurality of threaded elements and a tail shaft, wherein the threaded element is sleeved on the core shaft and rotates with the core shaft, the driving handle is connected to one end of the core shaft, the tail shaft is connected to the other end of the core shaft and locks the threaded element on the core shaft.

[0005] In one or more embodiments, the outer surface of the core shaft forms a spline, a star or a square shape, and the threaded element is provided with a mounting hole, and the shape of the mounting hole matches the shape of the core shaft surface so that the threaded element is mounted on the core shaft.

[0006] In one or more embodiments, a plurality of threaded elements are sleeved on the core shaft, and the plurality of threaded elements are connected end to end.

[0007] In one or more embodiments, the threaded element is provided with a boss and a recessed platform, and the recessed platform of the front threaded element cooperates with the boss of the next threaded element so that two adjacent threaded elements are connected in series.

[0008] In one or more embodiments, the threaded element is further provided with a screw ridge, and the screw ridge is provided between the convex platform and the concave platform.

[0009] In one or more embodiments, a positioning hole is provided at the tail end of the core shaft, and a positioning screw matched with the positioning hole is provided on the tail shaft.

[0010] In one or more embodiments, a limiting step is provided on the tail shaft, the limiting step protrudes upward from the positioning screw, and the limiting step abuts against the rear side surface of the threaded element.

[0011] Beneficial effects of the utility model:

[0012] 1. The screw is made of threaded elements. When the screw ribs are corroded or worn, only the corresponding threaded elements need to be replaced, which effectively reduces production costs.

[0013] 2. When the production formula is changed and optimized, only the corresponding threaded elements need to be replaced without replacing the entire screw, which effectively reduces production costs.

[0014] 3. Compared with the whole screw, the threaded element is easier to process and the processing equipment is smaller, which reduces the processing difficulty to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the disassembly of the single screw part in a building block style.

[0016] Figure 2 Schematic diagram of threaded element.

[0017] Figure 3 It is a connection diagram of the drive handle, core shaft and threaded element.

[0018] Figure 4 Schematic diagram of the connection between the mandrel, threaded element and tail shaft DETAILED DESCRIPTION

[0019] The present application scheme is further described as follows in conjunction with the accompanying drawings:

[0020] See attached Figure 1-4 A building block-type single screw includes a driving handle 1, a core shaft 3, a plurality of threaded elements 2 and a tail shaft 4. The threaded element 2 is sleeved on the core shaft 3 and rotates with the core shaft 3. The driving handle 1 is connected to one end of the core shaft 3, and the tail shaft 4 is connected to the other end of the core shaft 3 and locks the threaded element 2 on the core shaft 3.

[0021] Preferably, the driving handle 1 is threadedly connected to the spindle 3 .

[0022] Furthermore, the outer surface of the core shaft 3 is formed into a spline, a star shape or a square shape, and the threaded element 2 is provided with a mounting hole 24 , and the shape of the mounting hole 24 matches the shape of the surface of the core shaft 3 so that the threaded element 2 is mounted on the core shaft 3 .

[0023] Furthermore, a plurality of threaded elements 2 are sleeved on the core shaft 3 , and the plurality of threaded elements 2 are connected end to end.

[0024] Furthermore, the threaded element 2 is provided with a convex platform 21 and a concave platform 22 , and the concave platform 22 of the front threaded element 2 cooperates with the convex platform 21 of the next threaded element 2 so that two adjacent threaded elements 1 are connected in series.

[0025] Furthermore, the threaded element 2 is also provided with a screw ridge 23 , and the screw ridge 23 is arranged between the convex platform 21 and the concave platform 22 .

[0026] Furthermore, a positioning hole 31 is provided at the tail end of the core shaft 3 , and a positioning screw 41 matched with the positioning hole 31 is provided on the tail shaft 4 .

[0027] Furthermore, a limiting step 42 is provided on the tail shaft 4 , and the limiting step 42 protrudes upward from the positioning screw 41 , and the limiting step 42 abuts against the rear side surface of the threaded element 2 .

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A building block type single screw, characterized in that: It includes a driving handle, a core shaft, a plurality of threaded elements and a tail shaft, wherein the threaded element is sleeved on the core shaft and rotates with the core shaft, the driving handle is connected to one end of the core shaft, the tail shaft is connected to the other end of the core shaft and locks the threaded element on the core shaft, the outer surface of the core shaft forms a spline, a star or a square, the threaded element is provided with a mounting hole, the shape of the mounting hole matches the shape of the core shaft surface so that the threaded element is installed on the core shaft, a plurality of threaded elements are sleeved on the core shaft, the plurality of threaded elements are connected end to end, the threaded element is provided with a boss and a recess, the recess of the front threaded element matches the boss of the next threaded element so that two adjacent threaded elements are connected in series.

2. The building block type single screw according to claim 1, characterized in that: The threaded element is also provided with a screw ridge, and the screw ridge is arranged between the convex platform and the concave platform.

3. The building block type single screw according to claim 1, characterized in that: The tail end of the core shaft is provided with a positioning hole, and the tail shaft is provided with a positioning screw matched with the positioning hole.

4. The building block type single screw according to claim 3, characterized in that: A limiting step is arranged on the tail shaft, the limiting step protrudes upward from the positioning screw, and the limiting step abuts against the rear side surface of the threaded element.

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