Quick screw replacement structure

Abstract

The utility model relates to the technical field of screw rod installation, and discloses a quick screw rod replacing structure which comprises a screw rod shaft head arranged at the end of a screw rod body, a power shaft head arranged at the end of a power rod and a connecting sleeve used for connecting the power shaft head and the screw rod shaft head. The screw shaft head comprises a first butt joint end and a first torque transmission face arranged on the first butt joint end, and the power shaft head comprises a second butt joint end and a second torque transmission face arranged on the second butt joint end. According to the quick replacement screw structure, by arranging the connecting sleeve, the ball plunger and the annular clamping groove, when a screw is replaced and detached, the connecting sleeve is pushed firstly, and the plunger ball is extruded to be separated from the inner wall of the annular clamping groove until the end face of the connecting sleeve is pushed to the side, away from the screw shaft head, of the second inner end face of the power shaft head; at the moment, the plunger ball head on the power shaft head is clamped into the other annular clamping groove of the connecting sleeve, the connecting sleeve cannot move freely, the screw body can be taken out in the radial direction, no tool is needed, and convenience and rapidness are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw rod installation technical field, concretely is a kind of quick replacement screw rod structure. BACKGROUND

[0002] In the field of food, pharmaceutical, cylindrical battery production equipment, the main function of screw rod is to carry out high-speed, stable conveying to various product containers. In production, due to the need of changing product specifications and maintenance, screw rod often needs to be disassembled and replaced, therefore, to ensure production progress, quick replacement of screw rod is particularly important.

[0003] The screw rod on the market now generally adopts the structure of sleeve and shaft head cooperation for connection, its disassembly mode mainly has axial disengagement disassembly mode and radial disengagement disassembly mode, the former needs to let out space on the non-power side of shaft head first, then realizes disengagement disassembly along the axial direction of screw rod and power shaft head, and the overall structure is complex, disassembly is cumbersome, and it is only suitable for single screw rod occasion;The latter can be used for segmented screw rod occasion, but the structure is generally complex, and it can be disengaged only after disassembling screw by using tool, so disassembly is cumbersome. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of quick replacement screw rod structure, solve the problem mentioned in the above background.

[0005] The utility model provides the following technical scheme: a kind of quick replacement screw rod structure, comprising: the screw rod shaft head being arranged at the end of screw rod body, the power shaft head being arranged at the end of power rod and the coupling sleeve for connecting power shaft head and screw rod shaft head;

[0006] The screw rod shaft head includes first docking end and first torque transmission surface arranged on first docking end, and the power shaft head includes second docking end and second torque transmission surface arranged on second docking end;

[0007] The first torque transmission surface is engaged with the second torque transmission surface, and the first docking end and the second docking end are connected with the inner wall of the coupling sleeve.

[0008] The surface of first docking end and the surface of second docking end are each provided with at least one ball head plunger, the coupling sleeve inner hole is provided with two annular clamping grooves, and the ball head plunger is connected to the inner wall of the annular clamping groove.

[0009] Preferably, the surface of first docking end and the surface of second docking end are each provided with a mounting hole for mounting the ball head plunger, the number of ball head plungers in each mounting hole is two, and the two ball head plungers are symmetrically arranged inside the mounting hole.

[0010] Preferably, the ball head plunger comprises a mounting pipe base connected to the inner wall of the mounting hole, and a spring and a moving ball head arranged inside the mounting pipe base, one end of the spring is connected to the inner wall of the mounting pipe base, the other end of the spring is connected to the surface of the moving ball head, and the surface of the moving ball head is connected to the inner wall of the corresponding annular clamping groove in the coupling sleeve.

[0011] Preferably, the first torque transmission surface comprises a first outer end surface, a first inner end surface arranged in the first butt joint end, and a first tangent surface.

[0012] The second torque transmission surface comprises a second outer end surface, a second inner end surface arranged in the second butt joint end, and a second tangent surface.

[0013] The first outer end surface is attached to the second inner end surface, the first inner end surface is attached to the second outer end surface, and the first tangent surface is attached to the second tangent surface.

[0014] Preferably, the first tangent surface is arranged in parallel with the axis of the first butt joint end, and the second tangent surface is arranged in parallel with the axis of the second butt joint end.

[0015] Preferably, the angle between the first tangent surface and the axis of the first butt joint end is less than 180° and greater than 90°, and the angle between the second tangent surface and the axis of the second butt joint end is less than 180° and greater than 90°.

[0016] Preferably, the screw shaft head, and the outer diameter of the first butt joint end of the screw shaft head is the same as the outer diameter of the second butt joint end of the power shaft head, and the outer diameters of the first butt joint end and the second butt joint end are gap-fitted with the inner diameter of the coupling sleeve.

[0017] Preferably, the cross section of the annular clamping groove is trapezoidal.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The quick screw replacement structure is characterized in that the coupling sleeve, the ball head plunger and the annular clamping groove are arranged, when the screw is disassembled, the coupling sleeve is pushed first, the ball head plunger is extruded and separated from the inner wall of the annular clamping groove, until the end surface of the coupling sleeve is pushed to the side away from the screw shaft head of the second inner end surface of the power shaft head, at this time, the ball head plunger on the power shaft head is clamped into another annular clamping groove in the coupling sleeve, the coupling sleeve cannot freely move, and the screw body can be taken out in the radial direction without using any tool, which is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a partial enlarged structural schematic diagram of the ball head plunger position of the utility model;

[0022] Figure 3 It is the exploded structural schematic view of the utility model;

[0023] Figure 4 It is the structural schematic view of the first butt joint end and the first torque transmission surface of the utility model;

[0024] Figure 5 It is the structural schematic view of the second butt joint end and the second torque transmission surface of the utility model;

[0025] Figure 6 It is the side sectional structural schematic view of the coupling sleeve of the utility model;

[0026] Figure 7 It is the structural schematic view of the first and second cut surfaces of the utility model.

[0027] In the drawing: 1, screw body; 2, power rod; 3, screw shaft head; 31, first butt joint end; 32, first torque transmission surface; 321, first outer end surface; 322, first inner end surface; 323, first cut surface; 4, power shaft head; 41, second butt joint end; 42, second torque transmission surface; 421, second outer end surface; 422, second inner end surface; 423, second cut surface; 5, coupling sleeve; 6, ball head plunger; 61, mounting pipe base; 62, spring; 63, moving ball head; 7, annular clamping groove; 8, mounting hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] Please refer to Figures 1-7 A quick replacement screw structure, comprising: a screw shaft head 3 arranged at the end of a screw body 1, a power shaft head 4 arranged at the end of a power rod 2 and a coupling sleeve 5 for connecting the power shaft head 4 and the screw shaft head 3, the cross section of the annular clamping groove 7 is trapezoidal, the screw shaft head 3 comprises a first butt joint end 31 and a first torque transmission surface 32 arranged on the first butt joint end 31, the power shaft head 4 comprises a second butt joint end 41 and a second torque transmission surface 42 arranged on the second butt joint end 41, the first torque transmission surface 32 is engaged with the second torque transmission surface 42, the first butt joint end 31 and the second butt joint end 41 are both connected with the inner wall of the coupling sleeve 5, the surface of the first butt joint end 31 and the surface of the second butt joint end 41 are both provided with at least one ball head plunger 6, the inner hole of the coupling sleeve 5 is provided with two annular clamping grooves 7, and the ball head plunger 6 is connected with the inner wall of the annular clamping groove 7.

[0030] The surfaces of the first mating end 31 and the second mating end 41 are both provided with mounting holes 8 for mounting ball plungers 6. Each mounting hole 8 contains two ball plungers 6, and the two ball plungers 6 are symmetrically arranged inside the mounting hole 8.

[0031] The ball plunger 6 includes a mounting tube seat 61 connected to the inner wall of the mounting hole 8, and a spring 62 and a movable ball head 63 disposed inside the mounting tube seat 61. One end of the spring 62 is connected to the inner wall of the mounting tube seat 61, and the other end of the spring 62 is connected to the surface of the movable ball head 63. The surface of the movable ball head 63 is connected to the inner wall of the corresponding annular groove 7 in the connecting sleeve 5.

[0032] The first torque transmission surface 32 includes: a first outer end face 321, a first inner end face 322 formed at the first mating end 31, and a first tangent surface 323;

[0033] The second torque transmission surface 42 includes: a second outer end surface 421, a second inner end surface 422 formed at the second mating end 41, and a second tangential surface 423;

[0034] The first outer end face 321 is in contact with the second inner end face 422, the first inner end face 322 is in contact with the second outer end face 421, and the first cut surface 323 is in contact with the second cut surface 423.

[0035] In one specific embodiment, the first cut surface 323 is arranged parallel to the axis of the first docking end 31, and the second cut surface 423 is arranged parallel to the axis of the second docking end 41.

[0036] In one specific embodiment, the angle between the first cut surface 323 and the axis of the first mating end 31 is less than 180° and greater than 90°, and the angle between the second cut surface 423 and the axis of the second mating end 41 is less than 180° and greater than 90°. In this embodiment, by changing the angle between the first cut surface 323 and the first mating end 31, the stress concentration at the root of the first cut surface 323 and the first mating end 31 after being subjected to force is reduced, thereby enabling the transmission of greater torque and improving reliability.

[0037] The screw shaft head 3 has the same outer diameter at its first mating end 31 as at its second mating end 41 at its power shaft head 4. The outer diameters of both the first mating end 31 and the second mating end 41 are clearance-fitted with the inner diameter of the connecting sleeve 5.

[0038] When replacing or disassembling the screw, first push the connecting sleeve 5. The plunger ball head is squeezed and separated from the inner wall of the annular groove 7 until the end face of the connecting sleeve 5 is pushed to the side of the second inner end face 422 of the power shaft head 4 away from the screw shaft head 3. At this time, the plunger ball head on the power shaft head 4 is inserted into another annular groove 7 of the connecting sleeve 5. The connecting sleeve 5 cannot move freely, and the screw body 1 can be removed radially without the need for any tools, which is convenient and quick.

[0039] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the present application, which should be limited only by the appended claims and their equivalents.

Claims

1. A quick-change screw structure, characterized in that, include: The screw shaft head (3) is provided at the end of the screw body (1), the power shaft head (4) is provided at the end of the power rod (2), and the connecting sleeve (5) is used to connect the power shaft head (4) and the screw shaft head (3); The screw shaft head (3) includes a first mating end (31) and a first torque transmission surface (32) disposed on the first mating end (31), and the power shaft head (4) includes a second mating end (41) and a second torque transmission surface (42) disposed on the second mating end (41); The first torque transmission surface (32) meshes with the second torque transmission surface (42), and both the first mating end (31) and the second mating end (41) are connected to the inner wall of the connecting sleeve (5). At least one ball-head plunger (6) is provided on the surface of the first docking end (31) and the surface of the second docking end (41). The inner hole of the connecting sleeve (5) is provided with two annular grooves (7), and the ball-head plunger (6) is connected to the inner wall of the annular grooves (7).

2. The quick-change screw structure according to claim 1, characterized in that, The surfaces of the first mating end (31) and the second mating end (41) are provided with mounting holes (8) for installing ball plungers (6). Each mounting hole (8) contains two ball plungers (6), and the two ball plungers (6) are symmetrically arranged inside the mounting hole (8).

3. The quick-change screw structure according to claim 2, characterized in that, The ball plunger (6) includes a mounting tube seat (61) connected to the inner wall of the mounting hole (8), a spring (62) and a movable ball head (63) disposed inside the mounting tube seat (61). One end of the spring (62) is connected to the inner wall of the mounting tube seat (61), and the other end of the spring (62) is connected to the surface of the movable ball head (63). The surface of the movable ball head (63) is connected to the inner wall of the corresponding annular groove (7) inside the connecting sleeve (5).

4. The quick-change screw structure according to claim 1, characterized in that, The first torque transmission surface (32) includes: a first outer end surface (321), a first inner end surface (322) formed at the first mating end (31), and a first tangential surface (323); The second torque transmission surface (42) includes: a second outer end face (421), a second inner end face (422) formed at the second mating end (41), and a second tangential face (423); The first outer end face (321) is in contact with the second inner end face (422), the first inner end face (322) is in contact with the second outer end face (421), and the first cut surface (323) is in contact with the second cut surface (423).

5. The quick-change screw structure according to claim 4, characterized in that, The first cut surface (323) is parallel to the axis of the first docking end (31), and the second cut surface (423) is parallel to the axis of the second docking end (41).

6. The quick-change screw structure according to claim 4, characterized in that, The angle between the first cut surface (323) and the axis of the first mating end (31) is less than 180° and greater than 90°, and the angle between the second cut surface (423) and the axis of the second mating end (41) is less than 180° and greater than 90°.

7. The quick-change screw structure according to claim 6, characterized in that, The screw shaft head (3) has the same outer diameter at the first mating end (31) as the second mating end (41) of the power shaft head (4), and the outer diameters of the first mating end (31) and the second mating end (41) are both clearance-fitted with the inner diameter of the connecting sleeve (5).

8. The quick-change screw structure according to claim 7, characterized in that, The cross-section of the annular groove (7) is trapezoidal.

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