Shaft sleeve positioning tool

Abstract

The invention relates to a shaft sleeve positioning tool which comprises a long shaft sleeve, when a shaft sleeve is clamped and fixed, the distance of the shaft sleeve can be positioned by adjusting the distance between two inner clamping plates according to the needed span, then the shaft sleeve is clamped from the outer side through an outer clamping plate, and then the shaft sleeve is clamped and fixed. The coaxiality and the spacing precision of the shaft sleeves can be ensured; the two inner clamping plates are synchronously driven by the first driving mechanism to move, so that the distance between the two shaft sleeves can be more accurately determined; meanwhile, the two outer clamping plates are synchronously driven by the second driving mechanism to move, so that the shaft sleeve clamping and positioning efficiency can be greatly improved, and the production efficiency is further improved; and the overall design is ingenious, the space is reasonably utilized, and after the shaft sleeve and a product are welded, detection can be facilitated, and the shaft sleeve can be conveniently moved out of the long shaft sleeve.

Description

Technical Field

[0001] The invention relates to the field of mechanical technology, and in particular to a shaft sleeve positioning tool. Background Art

[0002] At present, in the assembly process of products such as cranes and pump trucks, more and more welding parts need to ensure the coaxiality of the inner holes of two, three or more sleeve parts on them, so as to ensure higher assembly accuracy.

[0003] However, for welding workpieces with large span holes, when the coaxiality accuracy requirements are high, it is usually difficult to process them due to the lack of suitable machine tools, or the coaxiality accuracy cannot be guaranteed after processing, or the coaxiality alignment and detection tooling cannot be disassembled. Not only is the processing cost high, the post-weld inspection is also difficult, and the qualified rate of finished products is also low. Summary of the invention

[0004] The present invention aims to solve one of the problems existing in the prior art to at least a certain extent. To this end, the present invention provides a shaft sleeve positioning tool.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A shaft sleeve positioning tool comprises a long shaft sleeve, on which an inner clamping device and an outer clamping device are respectively arranged, the inner clamping device comprises a central sleeve seat detachably mounted on the long shaft sleeve, telescopic cylinders are movably and retractably provided at both ends of the central sleeve seat, an inner clamping plate is arranged at the outer end of the telescopic cylinder, and a first driving mechanism for driving the two telescopic cylinders to extend outward or retract inward at the same time is also arranged on the central sleeve seat, the outer clamping device comprises a second driving mechanism and two outer clamping plates, the two outer clamping plates are slidably sleeved on the outside of the long shaft sleeve and are detachably connected to the second driving mechanism, the second driving mechanism is arranged in the long shaft sleeve, and is used to drive the two outer clamping plates to slide outward or inward simultaneously along the axial direction of the long shaft sleeve.

[0007] In some embodiments, the center sleeve seat includes a center ring that can be detachably mounted on the long axis sleeve and a bottom cylinder arranged at both ends of the center ring, the telescopic cylinder is slidably sleeved outside the bottom cylinder, a first slide rail extending axially along the long axis sleeve is arranged on the outer wall of the bottom cylinder, a first slider sliding in the first slide rail is arranged on the inner wall of the telescopic cylinder, the first driving mechanism includes an external thread arranged on the outer walls of the two telescopic cylinders, one of the two external threads is a right-handed thread, and the other is a left-handed thread, a threaded sleeve that can be threadedly connected to the external thread is arranged on the outer sleeve of the telescopic cylinder, a rotating ring is rotatably sleeved outside the center ring, and the threaded sleeves at both ends are connected to the rotating ring.

[0008] In some embodiments, the center ring is fixed to the long shaft sleeve by a first bolt, a countersunk hole is provided on the outer wall of the center ring, and the first bolt is disposed in the countersunk hole.

[0009] In some embodiments, an avoidance through hole is provided on the rotating ring for allowing the first bolt to pass through, the rotating ring is fixed to the center ring by a second bolt, a connecting ring is provided at the inner end of the threaded sleeve, the connecting ring is sleeved on the rotating ring, and the connecting ring is connected to the rotating ring by a third bolt.

[0010] In some embodiments, the second driving mechanism includes a coaxial bidirectional screw that is rotatably arranged in the long shaft sleeve, and sliding nuts are threadedly connected to the left-handed thread and the right-handed thread of the bidirectional screw, and a second slider is arranged on both sliding nuts. A second slide rail extending in an axial direction is arranged on the outer wall of the long shaft sleeve, and the second slider slides in the second slide rail, and the outer clamping plate is detachably connected to the second slider.

[0011] In some embodiments, a mounting plate is provided on the outer side of the outer clamping plate, and the mounting plate is fixed to the second sliding block by a fourth bolt.

[0012] In some embodiments, both ends of the bidirectional screw rod extend out of the long shaft sleeve and are provided with a hexagonal head that can cooperate with a wrench.

[0013] In some embodiments, both the inner clamping plate and the outer clamping plate are provided with eccentric through holes.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. When clamping and fixing the sleeve, the spacing of the sleeves can be positioned by adjusting the spacing between the two inner clamping plates according to the required span, and then the sleeves can be clamped and fixed from the outside by the outer clamping plate, which can ensure the coaxiality and spacing accuracy of the sleeves;

[0016] 2. The movement of the two inner clamping plates is synchronously driven by the first driving mechanism, so that the spacing between the two sleeves can be determined more accurately; at the same time, the movement of the two outer clamping plates is synchronously driven by the second driving mechanism, so that the efficiency of the sleeve clamping and positioning can be greatly improved, thereby improving the production efficiency;

[0017] 3. The inner clamping plate is connected to the first driving mechanism, and the first driving mechanism is detachably mounted on the long-axis sleeve. In addition, the outer clamping plate is detachably connected to the second driving mechanism, and the second driving mechanism is arranged in the long-axis sleeve. Therefore, through ingenious mechanical design and reasonable use of space, after the sleeve is welded to the product, it can be easily inspected and removed from the long-axis sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 It is a cross-sectional schematic diagram of the shaft sleeve of the present invention when it is positioned;

[0020] Figure 3 For the present invention Figure 2 A magnified schematic diagram of point A;

[0021] Figure 4 For the present invention Figure 2 An enlarged schematic diagram of point B;

[0022] Figure 5 It is a partial exploded schematic diagram of the central sleeve seat and the first driving mechanism of the present invention. DETAILED DESCRIPTION

[0023] The following specific implementation contents provide a variety of different embodiments or examples for implementing the present invention. Of course, these are only embodiments or examples and do not wish to be restrictive. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0024] like Figure 1-Figure 5 The shown shaft sleeve positioning tool includes a long shaft sleeve 1, on which an inner clamping device and an outer clamping device are respectively arranged, the inner clamping device includes a center sleeve seat 2 detachably mounted on the long shaft sleeve 1, telescopic cylinders 3 are movably and retractably provided at both ends of the center sleeve seat 2, an inner clamping plate 4 is arranged at the outer end of the telescopic cylinder 3, and a first driving mechanism for driving the two telescopic cylinders 3 to extend outward or retract inward at the same time is also arranged on the center sleeve seat 2, the outer clamping device includes a second driving mechanism and two outer clamping plates 5, the two outer clamping plates 5 are slidably sleeved on the outside of the long shaft sleeve 1, and are detachably connected to the second driving mechanism, the second driving mechanism is arranged in the long shaft sleeve 1, and is used to drive the two outer clamping plates 5 to slide outward or inward simultaneously along the axial direction of the long shaft sleeve 1.

[0025] Therefore, when the sleeve positioning tool of the present invention is used to clamp and fix the sleeve 100, the spacing of the two inner clamping plates 4 can be adjusted according to the required span to position the spacing of the sleeve 100, and then the outer clamping plate 5 is used to clamp the sleeve 100 from the outside, thereby clamping and fixing the sleeve 100, thereby ensuring the coaxiality and spacing accuracy of the sleeve 100.

[0026] It is worth mentioning that the movement of the two inner clamping plates 4 is synchronously driven by the first driving mechanism, so that the spacing between the two sleeves 100 can be determined more accurately; at the same time, the movement of the two outer clamping plates 5 is synchronously driven by the second driving mechanism, thereby greatly improving the efficiency of the sleeve clamping and positioning, thereby improving production efficiency.

[0027] The inner clamping plate 4 is connected to the first driving mechanism, and the first driving mechanism is detachably mounted on the long-axis sleeve 1. In addition, the outer clamping plate 5 is detachably connected to the second driving mechanism, and the second driving mechanism is arranged in the long-axis sleeve 1. Therefore, through clever mechanical design and rational use of space, after the sleeve 100 and the product 101 are welded, they can be easily inspected and removed from the long-axis sleeve.

[0028] Furthermore, the center sleeve seat 2 includes a center ring 21 detachably mounted on the long axis sleeve 1 and a bottom cylinder 22 arranged at both ends of the center ring 21, the center ring 21 and the bottom cylinders 22 at both ends are integrally formed, the telescopic cylinder 3 is slidably sleeved outside the bottom cylinder 22, a first slide rail 23 extending axially along the long axis sleeve 1 is arranged on the outer wall of the bottom cylinder 22, and a first slider 24 sliding in the first slide rail 23 is arranged on the inner wall of the telescopic cylinder 3, so that the telescopic cylinder 3 can slide along the axial direction of the long axis sleeve 1 outside the bottom cylinder 22 through the guidance of the first slide rail 23, the first driving mechanism includes an external thread 25 arranged on the outer walls of the two telescopic cylinders 3, one of the two external threads 25 is a right-handed thread, and the other is a left-handed thread, a threaded sleeve 26 that can be threadedly connected to the external thread 25 is arranged on the outer sleeve of the telescopic cylinder 3, a rotating ring 27 is rotatably sleeved outside the center ring 21, and the threaded sleeves 26 at both ends are connected to the rotating ring 27.

[0029] The specific working principle of the first driving mechanism is as follows: the threaded sleeves 26 at both ends are driven to rotate in the same direction by the rotating ring 27. Since the external threads 25 on the outer walls of the two telescopic cylinders 3 are right-handed threads and left-handed threads respectively, when the threaded sleeves 26 rotate to cooperate with the external threads 25, and under the action of the first slider 24 and the first slide rail 23, the two telescopic cylinders 3 drive the inner clamping plates 4 to slide outwardly or inwardly at the same time, thereby realizing rapid adjustment of the distance between the two inner clamping plates 4.

[0030] See also Figure 1 , Figure 5 As shown, the center ring 21 is fixed to the long shaft sleeve 1 by the first bolt 31, so that the center ring 21 can be fixed by the first bolt 31, the structure is simple, and the operation is convenient. The outer wall of the center ring 21 is provided with a countersunk hole 32, and the first bolt 31 is provided in the countersunk hole 32. The first bolt 31 is embedded in the countersunk hole 32, so as not to affect the rotation of the rotating ring 27 on the center ring 21.

[0031] Furthermore, an avoidance through hole 41 through which the first bolt 31 can pass is provided on the rotating ring 27 . When the center ring 21 is installed, the first bolt 31 is installed by passing through the avoidance through hole 41 .

[0032] The rotating ring 27 is fixed to the center ring 21 by a second bolt 44. A connecting ring 42 is provided at the inner end of the threaded sleeve 26. The connecting ring 42 is sleeved on the rotating ring 27 and connected to the rotating ring 27 by a third bolt 43. Therefore, when the rotating ring 27 completes the spacing adjustment of the telescopic cylinder 3, the rotating ring 27 can be fixed to the center ring 21 by the second bolt 44, thereby fixing the telescopic cylinder 3 and the inner clamping plate 4.

[0033] It is worth mentioning that the connecting ring 42 on the threaded sleeve 26 is fixed to the rotating ring 27 by a third bolt 43. Therefore, according to the actual situation, the third bolt 43 on the threaded sleeve 26 on one side can be loosened separately, so that the threaded sleeve 26 on this side can be rotated separately, and the position of the inner clamping plate 4 on one side can be adjusted separately, which is very practical.

[0034] See also Figure 1-Figure 3 As shown, the second driving mechanism includes a coaxial bidirectional screw 51 rotatably arranged in the long shaft sleeve 1, and sliding nuts 52 are threadedly connected to the left-handed thread and the right-handed thread of the bidirectional screw 51, and second sliders 53 are arranged on the two sliding nuts 52. A second slide rail 54 extending in the axial direction is arranged on the outer wall of the long shaft sleeve 1, and the second slider 53 slides in the second slide rail 54, and the outer clamping plate 5 is detachably connected to the second slider 53.

[0035] The specific working principle of the second driving mechanism is as follows: through the rotation of the bidirectional screw rod 51, the left-handed thread and the right-handed thread of the bidirectional screw rod 51 are matched with the corresponding sliding nut 52, and the sliding nut 52, under the cooperation of the second slider 53 and the second slide rail 54, makes the sliding nut 52 and the second slider 53 slide in the second slide rail 54, so that the second sliders 53 on both sides and the outer clamping plate 5 slide inward or outward with each other, so that the sleeve 100 can be quickly clamped.

[0036] Furthermore, a mounting plate 61 is provided on the outside of the outer clamping plate 5, and the mounting plate 61 is fixed to the second slider 53 by a fourth bolt 62. The structure is simple and the installation is convenient. Moreover, the second slider 53 will not protrude outside the second slide rail 54, thereby not affecting the assembly and disassembly of the outer clamping plate 5, the bearing 100, the center sleeve seat 2, etc.

[0037] Furthermore, both ends of the bidirectional screw rod 51 extend out of the long shaft sleeve 1 and are provided with a hexagonal head 71 that can cooperate with a wrench. The cooperation between the wrench and the hexagonal head 71 facilitates the turning of the bidirectional screw rod 51. Of course, the outer end of the bidirectional screw rod 51 can also be driven to rotate by a motor or other machine equipment.

[0038] See also Figure 1 , Figure 5 As shown, an eccentric through hole 81 is provided on the inner clamping plate 4 and the outer clamping plate 5. The setting of the eccentric through hole 81 can reduce the weight of the inner clamping plate 4 or the outer clamping plate 5. At the same time, the shaft sleeve or other workpieces can be welded in the eccentric through hole 81, thereby facilitating welding work.

[0039] In conjunction with the drawings and the above, the basic principles and main features of the present invention and the advantages of the present invention are shown and described. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A shaft sleeve positioning tool, comprising a long shaft sleeve (1), characterized in that: An inner clamping device and an outer clamping device are respectively arranged on the long-axis sleeve (1), the inner clamping device comprises a central sleeve seat (2) detachably mounted on the long-axis sleeve (1), telescopic cylinders (3) are movably and retractably provided at both ends of the central sleeve seat (2), an inner clamping plate (4) is arranged at the outer end of the telescopic cylinder (3), and a first driving mechanism for driving the two telescopic cylinders (3) to extend outward or retract inward at the same time is also arranged on the central sleeve seat (2), the outer clamping device comprises a second driving mechanism and two outer clamping plates (5), the two outer clamping plates (5) are slidably sleeved outside the long-axis sleeve (1) and are detachably connected to the second driving mechanism, the second driving mechanism is arranged inside the long-axis sleeve (1), and is used to drive the two outer clamping plates (5) to slide outward or inward simultaneously along the axial direction of the long-axis sleeve (1).

2. The sleeve positioning tool according to claim 1, characterized in that: The central sleeve seat (2) comprises a central ring (21) detachably mounted on the long axis sleeve (1) and a bottom sleeve (22) arranged at both ends of the central ring (21); the telescopic cylinder (3) is slidably sleeved outside the bottom sleeve (22); a first slide rail (23) extending axially along the long axis sleeve (1) is arranged on the outer wall of the bottom sleeve (22); a first slider (24) sliding in the first slide rail (23) is arranged on the inner wall of the telescopic cylinder (3); the first driving mechanism comprises an external thread (25) arranged on the outer walls of the two telescopic cylinders (3); one of the two external threads (25) is a right-handed thread and the other is a left-handed thread; a threaded sleeve (26) capable of being threadedly connected to the external thread (25) is arranged on the outer sleeve of the telescopic cylinder (3); a rotating ring (27) is rotatably sleeved outside the central ring (21); the threaded sleeves (26) at both ends are connected to the rotating ring (27).

3. The sleeve positioning tool according to claim 2, characterized in that: The center ring (21) is fixed to the long shaft sleeve (1) by means of a first bolt (31); a countersunk hole (32) is provided on the outer wall of the center ring (21); and the first bolt (31) is disposed in the countersunk hole (32).

4. The shaft sleeve positioning tool according to claim 3, characterized in that: The rotating ring (27) is provided with an avoidance through hole (41) through which a first bolt (31) can pass. The rotating ring (27) is fixed to the center ring (21) by a second bolt (44). A connecting ring (42) is provided at the inner end of the threaded sleeve (26). The connecting ring (42) is sleeved on the rotating ring (27) and connected to the rotating ring (27) by a third bolt (43).

5. The sleeve positioning tool according to claim 1, characterized in that: The second driving mechanism comprises a bidirectional screw (51) coaxially rotatably arranged in the long shaft sleeve (1), a sliding nut (52) is threadedly connected to the left-handed thread and the right-handed thread of the bidirectional screw (51), a second slider (53) is arranged on the two sliding nuts (52), a second slide rail (54) extending in the axial direction is arranged on the outer wall of the long shaft sleeve (1), the second slider (53) slides in the second slide rail (54), and the outer clamping plate (5) is detachably connected to the second slider (53).

6. The sleeve positioning tool according to claim 5, characterized in that: A mounting plate (61) is arranged on the outside of the outer clamping plate (5), and the mounting plate (61) is fixed to the second sliding block (53) by a fourth bolt (62).

7. The shaft sleeve positioning tool according to claim 5, characterized in that: Both ends of the bidirectional screw rod (51) extend out of the long shaft sleeve (1) and are provided with hexagonal heads (71) that can cooperate with a wrench.

8. The shaft sleeve positioning tool according to claim 1, characterized in that: An eccentric through hole (81) is provided on both the inner clamping plate (4) and the outer clamping plate (5).

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