A spiral shaft head auxiliary assembly device

Abstract

An auxiliary assembly device for a spiral shaft head of the present invention includes: a support structure, two sets of support structures are provided, a top plate (8) is installed on the top of one set of support structures, a shaft locking positioning device is installed on the top of the other set of support structures, and the jacking mechanism installed on the top plate (8) faces the shaft locking positioning device; the shaft locking positioning device includes a bottom plate (10) and a panel (12) connected by a rib plate (11), and coaxial through holes are provided on the bottom plate (10) and the panel (12), and a plurality of clamping mechanisms are arranged around the through hole on the panel (12). The auxiliary assembly device for a spiral shaft head of the present invention has a simple structure, is convenient to use, and effectively plays a protective role in the assembly process of the spiral shaft head after being applied.

Description

Technical Field

[0001] The present invention relates to an auxiliary assembly device, and more particularly to a device that plays an auxiliary role during the assembly of a spiral shaft head to avoid damage to the shaft head. Background Art

[0002] At present, whether it is the assembly of a spiral shaft head or the assembly of other shaft types, the adopted tolerance is an interference fit, so it is not easy to install the shaft. At the same time, for the vast majority of machinery manufacturing plants, considering factors such as cost, site, and the price of special devices, they will not purchase a dedicated spiral shaft head pressing device for assembly; therefore, generally, a hoist is used to lift the shaft head, making it difficult to ensure the concentricity of the shaft and the hole during assembly, and forced installation will greatly damage the spiral shaft. The conventional forced installation method is: repeatedly hitting the end of the spiral shaft head with a sledgehammer, usually with an aluminum plate padded between the spiral shaft head and the sledgehammer to reduce the direct damage to the shaft head; however, this measure can only slow down but cannot eliminate the damage to the end of the spiral shaft head. In any case, this method will cause the edge of the spiral shaft head to deform due to the impact force, hindering the next-step assembly of the spiral shaft (the same for other shafts). For this reason, in order to enable the next-step assembly of the spiral shaft, some companies will use a file or sandpaper to polish some positions of the end of the spiral shaft head that are deformed due to the impact force, but this operation sacrifices the tolerance, roughness, and roundness runout at the spiral shaft head, resulting in a worse assembly effect. At the same time, because workers need to hold the aluminum plate by hand and pad it between the sledgehammer and the spiral shaft head, there are potential operation safety hazards. To sum up, there is an urgent need for an auxiliary device that can solve the above problems to play a protective role during the assembly of the spiral shaft head. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above deficiencies and provide an auxiliary assembly device for a spiral shaft head, which has a simple structure, is easy to use, and effectively plays a protective role during the assembly of the spiral shaft head.

[0004] The purpose of the present invention is achieved as follows:

[0005] An auxiliary assembly device for a spiral shaft head includes:

[0006] A support structure, there are two groups of support structures. The top of one group of support structures is installed with a top plate, and the top of the other group of support structures is installed with a shaft locking and positioning device, and the jacking mechanism installed on the top plate faces the shaft locking and positioning device;

[0007] A shaft locking and positioning device, which includes a bottom plate and a panel connected by rib plates, and coaxial through holes are provided on the bottom plate and the panel, and a plurality of clamping mechanisms are arranged around the through hole on the panel.

[0008] Furthermore, the clamping mechanism includes a limit retaining ring and an inner race of a slide rail, which are mounted on the panel. The limit retaining ring, the gear ring, the inner race of the slide rail, and the through hole on the panel are coaxially arranged. The outer ring surface of the gear ring is in contact with the inner ring wall of the limit retaining ring, and the gear ring is located between the limit retaining ring and the inner race of the slide rail. There is a notch on the limit retaining ring, and a retaining rod provided on the outer ring surface of the gear ring is located in this notch. A plurality of sliding grooves are provided on the limit retaining ring and the inner race of the slide rail. A rack is slidably arranged in the sliding grooves and presses above the gear ring. A plurality of planetary gears are also provided on the panel. The planetary gears are meshed with the inner ring teeth of the gear ring and the teeth on the side wall of the rack. A clamping block is connected to the rack, and a rolling bearing is installed at the end of the clamping block.

[0009] Furthermore, the sliding grooves on the limit retaining ring and the inner race of the slide rail are both provided with dovetail grooves, and the rack is provided with sliders embedded in the dovetail grooves.

[0010] Furthermore, the jacking mechanism is a jack.

[0011] Furthermore, the support structure includes a base plate. A main body square tube is vertically welded on the base plate. A sub-square tube is vertically and slidably inserted into the main body square tube. A limit baffle is welded at one end of the sub-square tube inserted into the main body square tube, and the sub-square tube and the main body square tube are locked by screws. And a top plate is welded to the top of the sub-square tube of a group of support structures, and a bottom plate is welded to the top of the sub-square tube of another group of support structures.

[0012] Furthermore, the bottom plate and the top plate are connected by a connecting rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The structure of the present invention is simple and easy to use. By adjustment, it can be matched with shafts of different sizes, and the installation height can also be adjusted according to the size of the helix, so as to quickly and safely assemble the spiral shaft head in a non-destructive way by pressing, which not only avoids damage to the spiral shaft head, but also improves work efficiency and assembly accuracy, and reduces production costs (it does not require workers to strike one by one with a hammer. Since it is a transition fit rather than a clearance fit, it takes a long time, which not only reduces production efficiency, but also increases the labor cost expenditure). BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an auxiliary assembly device for a spiral shaft head of the present invention.

[0016] Figure 2 is a schematic diagram of the application state of an auxiliary assembly device for a spiral shaft head of the present invention.

[0017] Figure 3 is an auxiliary assembly device for a spiral shaft head of the present inventionFigure 2 Schematic diagram of the reverse perspective

[0018] Figure 4 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 3 Partial enlarged view at I

[0019] Figure 5 Schematic diagram of the support structure of an auxiliary assembly device of a spiral shaft head according to the present invention

[0020] Figure 6 Top view of the support structure of an auxiliary assembly device of a spiral shaft head according to the present invention

[0021] Figure 7 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 6 Partial enlarged view at II

[0022] Figure 8 Schematic diagram of the assembly structure of the support structure and the top plate of an auxiliary assembly device of a spiral shaft head according to the present invention

[0023] Figure 9 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 8 Side view

[0024] Figure 10 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 9 Partial enlarged view at III

[0025] Figure 11 Schematic diagram of the structure of the lock shaft positioning device of an auxiliary assembly device of a spiral shaft head according to the present invention

[0026] Figure 12 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 11 Front view

[0027] Figure 13 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 12 Partial enlarged view at IV

[0028] Figure 14 Side view of the application state of an auxiliary assembly device of a spiral shaft head according to the present invention

[0029] Figure 15 Exploded state schematic diagram at the front panel of the lock shaft positioning device of an auxiliary assembly device of a spiral shaft head according to the present invention

[0030] Figure 16 For an auxiliary assembly device of a spiral shaft head according to the present invention Figure 15 Schematic diagram of another perspective

[0031] Wherein:

[0032] Base plate 1, main body square tube 2, sub-square tube 3, limit baffle 4, set screw 5, connecting block A 6, hexagon head bolt and gasket 7, top plate 8, jack 9, bottom plate 10, rib plate 11, panel 12, limit retaining ring 13, gear ring 14, retaining rod 15, planetary gear 16, pinion bearing 17, pin shaft 18, inner ring of slide rail 19, rack 20, clamping block 21, socket head cap screw 22, rolling bearing 23, pin 24, snap ring 25, connecting rod 26, nut and gasket 27, connecting block B 28, bolt fastener 29. Specific implementation mode

[0033] See Figures 1 to 16 A spiral shaft head auxiliary assembly device according to the present invention includes a support structure and a shaft locking and positioning device;

[0034] See Figures 5 to 10 As shown, the support structure includes a base plate 1, a main body square tube 2 is vertically welded on the base plate 1, and a diagonal bracing square tube is welded between the lower side wall of the main body square tube 2 and the plate surface of the base plate 1 for reinforcement. A sub-square tube 3 is vertically slidably inserted into the main body square tube 2. When the sub-square tube 3 is lifted to an appropriate height, the set screw 5 locks the sub-square tube 3 and the main body square tube 2; a limit baffle 4 is welded at one end of the sub-square tube 3 inserted into the main body square tube 2 to play a limiting role and prevent the sub-square tube 3 from falling off.

[0035] The connecting block A 6 is welded to the outer side wall of the sub-square tube 3 to form a support part, and this support part is connected to the top plate 8 by a hexagon head bolt and a gasket 7, so that disassembly can be conveniently achieved as needed. At the same time, the jack 9 is connected to the side wall of the top plate 8 by bolts, and the disassembly is convenient.

[0036] See Figures 11 to 16 As shown, the shaft locking and positioning device includes a bottom plate 10 and a panel 12 connected by rib plates 11. Both the bottom plate 10 and the panel 12 are annular structures (and the central axes of the central ring holes of the two annular structures coincide), and the inner ring of the slide rail 19, the inner ring of the panel 12 and the bottom plate 10 are integral and processed integrally, so as to ensure concentricity; the gear ring 14 of the planetary gear 16 is in clearance fit with the limit retaining ring 13 and can rotate relatively. The gear ring 14 and the retaining rod 15 are connected by threads (a screw hole is provided on the raised block on the outer ring surface of the gear ring 14, and the retaining rod 15 is screwed into the screw hole through the external thread provided at its bottom). Thus, rotating the retaining rod 15 can drive the block on the gear ring 14 to hit both ends of the notch of the limit retaining ring 13. Therefore, the stroke of the clamping block 21 is controlled by the rotation angle of the retaining rod 15.

[0037] The planetary gear 16 and the pinion bearing 17 are tightly fitted with a tolerance. The pinion bearing 17 is installed on the panel 12 by a pin shaft 18, thereby fixing the planetary gear 16 on the panel 12; the inner ring 19 of the slide rail is also connected to the panel 12 by bolts.

[0038] At the same time, the rack 20, the limit retaining ring 13, and the inner ring 19 of the slide rail are machined to be in slide rail fit to achieve relative sliding, that is, the bottom slider of the rack 20 is slidably arranged in the dovetail grooves of the limit retaining ring 13 and the inner ring 19 of the slide rail. The clamping block 21 is connected to the rack 20 by an internal hexagonal screw 22. The end of the clamping block 21 is connected to the rolling bearing 23 by a pin 24 and a circlip 25, that is, an opening groove is provided at the bottom of the clamping block 21. After the rolling bearing 23 is inserted into the opening groove, the rolling bearing 23 is installed in the opening groove by the pin 24 and the circlip 25. The purpose of setting the rolling bearing 23 is that when the screw shaft is clamped, when the jack 9 presses the screw shaft in, the clamping block 21 needs to clamp the side wall of the screw shaft. At this time, the rolling friction of the rolling bearing 23 at the end of the clamping block 21 is used to ensure that the surface of the screw shaft is not damaged.

[0039] When the shift lever 15 is rotated, the gear ring 14 is driven. The planetary gear 16 is in a meshing relationship with the gear ring 14 and forms a meshing drive relationship with the rack 20. The gear ring 14 drives the planetary gear 16, and then drives the rack 20 to realize the sliding of the slide rail, so as to realize the clamping and positioning of the screw shaft by the three clamping blocks 21. Since the inner ring 19 of the slide rail and the bottom plate 10 are integrally machined, the concentricity is ensured. The planetary gear 16 synchronously drives the three racks 20 to realize the clamping function, ensuring that when the screw shaft is clamped and positioned, the screw shaft and the inner installation hole of the screw are concentric, avoiding the assembly difficulty and damage to the screw shaft caused by not being on the same axis, and greatly improving the accuracy and work efficiency.

[0040] Two connecting blocks B28 are welded at the front end of the panel 12 of the shaft locking and positioning device. The connecting blocks B28 are further welded on the sub-square tube 3, which can play a role in strengthening the support. At the same time, the installation height of the screw shaft can be adjusted according to the size and height of the screw, greatly enhancing the applicability.

[0041] The bottom plate 10 and the top plate 8 are connected by a connecting rod 26. The connecting rod 26 is made of solid round steel, and the connecting rod 26 is connected to the top plate 8 and the bottom plate 10 by external hexagonal nuts and gaskets 27.

[0042] The working principle of the present invention is:

[0043] The bottom plate 10 is threadedly connected to the spiral main body by the bolt fastener 29. The four threaded holes are technological holes added to the spiral main body, which avoids using the original threaded holes on the spiral main body, avoids damage to the original threaded holes, and avoids damage to the original structure caused by assembly. After the bolt fastener 29 is threadedly connected, the entire auxiliary device for spiral shaft head assembly is more stable and securely fixed on the spiral; at this time, the shift lever 15 is toggled to make the gear ring 14 rotate, thereby driving the planetary gear 16 to rotate. The rotating planetary gear 16 drives the rack 20 engaged with it to slide in the chute, so as to tighten the clamping block 21 connected to the rack 20, making the rolling bearing 23 at the end of the clamping block 21 in close contact with the outer wall of the spiral shaft; then only need to rotate the jack 9 with a simple structure to activate the jack to stably and safely press the spiral shaft. This device not only saves effort, improves assembly efficiency, reduces costs, and has extremely strong applicability, which can be achieved by all machinery manufacturing plants. Most importantly, it is safe, not only responsible for the safety of assembly workers, but also for the safety of workpieces, and can stably and easily achieve the assembly of the spiral shaft, avoiding rework caused by violent assembly processes.

[0044] In addition, it should be noted that the above specific implementation manner is only an optimized solution of this patent. Any changes or improvements made by those skilled in the art based on the above conceptions are within the protection scope of this patent.

Claims

1. A spiral shaft head auxiliary assembly device, characterized in that: Contains: A support structure, wherein the support structure is provided in two groups, a top plate (8) is installed on the top of one group of support structures, and a shaft locking positioning device is installed on the top of the other group of support structures, and a lifting mechanism installed on the top plate (8) faces the shaft locking positioning device; The shaft locking positioning device comprises a bottom plate (10) and a panel (12) connected via a rib plate (11), wherein the bottom plate (10) and the panel (12) are provided with coaxial through holes, and the panel (12) is provided with a plurality of clamping mechanisms around the through holes; The clamping mechanism comprises a limit ring (13) and a slide rail inner ring (19) mounted on the panel (12), and the limit ring (13), the gear ring (14), the slide rail inner ring (19) are coaxially arranged with the through hole on the panel (12), the outer ring surface of the gear ring (14) slidably fits the inner ring wall of the limit ring (13), and the gear ring (14) is located between the limit ring (13) and the slide rail inner ring (19), and the limit ring (13) is provided with a notch, and the gear ring (14) is provided with a notch. A stopper (15) arranged on the outer ring surface of the ring (14) is located in the notch, a plurality of slide grooves are arranged on the limit stopper ring (13) and the inner ring (19) of the slide rail, a rack (20) is slidably arranged in the slide groove, and the rack (20) is pressed on the top of the gear ring (14), and a plurality of planetary gears (16) are also arranged on the panel (12), the planetary gears (16) are meshed with the inner ring teeth of the gear ring (14), and the side walls of the planetary gears (16) and the rack (20) are connected. The toothed openings on the rack (20) are meshed with each other, a clamping block (21) is arranged on the rack (20), and a rolling bearing (23) is installed on the end of the clamping block (21); the slide grooves on the limit ring (13) and the inner ring (19) of the slide rail are both provided with dovetail grooves, and the rack (20) is provided with a slider embedded in the dovetail groove; the lifting mechanism is a jack (9); the supporting structure includes a base plate (1), and a main square tube (2) is vertically welded on the base plate (1). A sub-square tube (3) is vertically slidably inserted in the main square tube (2); a limit stopper (4) is welded to one end of the sub-square tube (3) inserted in the main square tube (2); a screw (5) locks the sub-square tube (3) and the main square tube (2); and a top plate (8) is welded to the top of one group of sub-square tubes (3) of the supporting structure, and a bottom plate (10) is welded to the top of another group of sub-square tubes (3) of the supporting structure; the bottom plate (10) and the top plate (8) are connected by a connecting rod (26); The stopper rod (15) is rotated to drive the stopper blocks on the gear ring (14) to hit the two ends of the notch of the limit stopper ring (13), thereby controlling the stroke of the clamping block (21) by the rotation angle of the stopper rod (15): in the process of driving the gear ring (14) to rotate by turning the stopper rod (15), the planetary gear (16) is driven to rotate, and the rotating planetary gear (16) drives the rack (20) meshing therewith to slide in the slide groove, tightening the clamping block (21) connected to the rack (20), and the rolling bearing (23) at the end of the clamping block (21) is in close contact with the outer wall of the screw shaft; then the jack (9) is started to press the screw shaft; A screw hole is provided on a stop block protruding from the outer ring surface of the gear ring (14), and a stop rod (15) is screwed into the screw hole through an external thread provided at its bottom; An opening groove is provided at the bottom of the clamping block (21). After the rolling bearing (23) is inserted into the opening groove, the rolling bearing (23) is installed in the opening groove by a pin (24) and a circlip (25).

Images