A multi-stage variable diameter connecting sleeve

Abstract

The utility model discloses a multi-stage variable diameter connecting sleeve, comprising a sleeve, wherein two ends of the sleeve are respectively provided with a telescopic hole sleeve and a telescopic shaft sleeve, wherein the telescopic hole sleeve comprises a plurality of hole sleeves which are fitted in sequence, wherein the outer walls of the plurality of hole sleeves are provided with a second key groove, and the telescopic shaft sleeve comprises a plurality of shaft sleeves which are fitted in sequence, wherein the inner walls of the shaft sleeves are provided with a third key groove. The utility model can connect shafts and shaft holes of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission mechanisms, and more specifically to a connecting sleeve with multiple stages of variable diameters. Background Art

[0002] When connecting two devices with an axial hole and a shaft respectively, the axial hole and the shaft of the device are often not matched, and a connecting sleeve is needed in the middle. In the past, the connecting sleeve was designed according to the size of the axial hole and the shaft of the device. If the size of the shaft or the axial hole of one of the devices changes, or the size of the axial hole or the shaft changes after changing the specification model of one of the devices, the connecting sleeve needs to be changed accordingly, resulting in redesign and processing. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a connecting sleeve with multiple stages of variable diameters.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a multi-stage variable diameter connecting sleeve, comprising a sleeve. Telescopic hole sleeves and telescopic shaft sleeves are respectively installed at two ends inside the sleeve. The telescopic hole sleeve comprises a plurality of hole sleeves which are fitted in sequence. The outer walls of the plurality of hole sleeves are each provided with a second key groove. The telescopic shaft sleeve comprises a plurality of shaft sleeves which are fitted in sequence. The inner walls of the shaft sleeves are each provided with a third key groove.

[0006] Furthermore, the sleeve is provided with fixing hole one, fixing hole two, fixing hole three and fixing hole four, and fixing hole one, fixing hole two, fixing hole three and fixing hole four are all set through the sleeve, the hole sleeve is provided with mounting hole one and mounting hole two, and the spacing between fixing hole one and fixing hole two is the same as the spacing between mounting hole one and mounting hole two, and the shaft sleeve is provided with mounting hole three and mounting hole four, and the spacing between fixing hole three and fixing hole four is the same as the spacing between mounting hole three and mounting hole four.

[0007] Furthermore, the opening positions of the mounting hole 1 and the mounting hole 2 correspond to the keyway 2.

[0008] Furthermore, the opening positions of the mounting hole three and the mounting hole four correspond to the keyway three.

[0009] Furthermore, a key groove is provided on the outer wall of one end of the sleeve on which the telescopic hole sleeve is installed.

[0010] Furthermore, the first fixing hole and the second fixing hole are formed on the first keyway.

[0011] The beneficial effect of the utility model is that suitable hole sleeves and shaft sleeves can be selected for connection according to the sizes of the connected shaft holes and shafts, thereby meeting the connection requirements between different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of a multi-stage variable diameter connecting sleeve in this embodiment;

[0013] Figure 2 This is a schematic diagram of an expanded state of the multi-stage variable diameter connecting sleeve in this embodiment;

[0014] Figure 3 A cross-sectional view of the multi-stage variable diameter connecting sleeve in the present embodiment in an expanded state;

[0015] Figure 4 This is a schematic diagram of a use state of the multi-stage variable diameter connecting sleeve in this embodiment;

[0016] Figure 5 A cross-sectional view of a use state of the multi-stage variable diameter connecting sleeve in this embodiment;

[0017] Figure 6 This is a schematic diagram of another use state of the multi-stage variable diameter connecting sleeve in this embodiment;

[0018] Figure 7 This is a cross-sectional view of another use state of the multi-stage variable diameter connecting sleeve in this embodiment;

[0019] Figure 8 This is a schematic diagram of another use state of the multi-stage variable diameter connecting sleeve in this embodiment;

[0020] Fig. 9 This is a cross-sectional view of another usage state of the multi-stage variable diameter connecting sleeve in this embodiment.

[0021] Figure numerals: 1. sleeve; 2. telescopic hole sleeve; 3. telescopic shaft sleeve; 4. fixing hole one; 5. fixing hole two; 6. fixing hole three; 7. fixing hole four; 8. keyway one; 9. keyway two; 10. first hole sleeve; 11. second hole sleeve; 12. third hole sleeve; 13. fourth hole sleeve; 14. first shaft sleeve; 15. second shaft sleeve; 16. third shaft sleeve; 17. fourth shaft sleeve; 18. mounting hole one; 19. mounting hole two; 20. mounting hole three; 21. mounting hole four; 22. keyway three. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a multi-stage variable diameter connecting sleeve includes a sleeve 1, and a telescopic hole sleeve 2 and a telescopic shaft sleeve 3 are respectively installed at both ends of the sleeve 1. The telescopic hole sleeve 2 includes a first hole sleeve 10, a second hole sleeve 11, a third hole sleeve 12, and a fourth hole sleeve 13. The second hole sleeve 11, the third hole sleeve 12, and the fourth hole sleeve 13 are sequentially nested in the first hole sleeve 10 from large to small according to the radius and can be extended. The first hole sleeve 10 is then installed to the left end of the sleeve 1. The telescopic shaft sleeve 3 includes a first shaft sleeve 14, a second shaft sleeve 15, a third shaft sleeve 16, and a fourth shaft sleeve 17. The second shaft sleeve 15, the third shaft sleeve 16, and the fourth shaft sleeve 17 are sequentially nested in the first shaft sleeve 14 from large to small according to the radius and can be extended. The first shaft sleeve 14 is then installed to the right end of the sleeve 1.

[0024] The sleeve 1 is provided with a fixing hole 14, a fixing hole 25, a fixing hole 36 and a fixing hole 47 from left to right, and the fixing hole 14, the fixing hole 25, the fixing hole 36 and the fixing hole 47 are all set through the sleeve 1. The first hole sleeve 10, the second hole sleeve 11, the third hole sleeve 12 and the fourth hole sleeve 13 are provided with a mounting hole 18 and a mounting hole 21, and the mounting hole 18 and the mounting hole 21 are set through the first hole sleeve 10, the second hole sleeve 11, the third hole sleeve 12 and the fourth hole sleeve 13. The spacing between the fixing hole 14 and the fixing hole 25 is the same as the spacing between the mounting hole 18 and the mounting hole 219. The first shaft sleeve 14, the second shaft sleeve 15, the third shaft sleeve 16 and the fourth shaft sleeve 17 are provided with a mounting hole 320 and a mounting hole 421, and the mounting hole 320 and the mounting hole 421 are set through the first shaft sleeve 14, the second shaft sleeve 15, the third shaft sleeve 16 and the fourth shaft sleeve 17. The distance between fixing hole three 6 and fixing hole four 7 is the same as the distance between mounting hole three 20 and mounting hole four 21.

[0025] The first hole sleeve 10, the second hole sleeve 11, the third hole sleeve 12, and the fourth hole sleeve 13 are all provided with a key groove 9 on the upper side of the outer wall. The key groove 9 is arranged along the axial direction to cooperate with the key on the hole.

[0026] The first shaft sleeve 14, the second shaft sleeve 15, the third shaft sleeve 16, and the fourth shaft sleeve 17 are all provided with key grooves 22 on their inner wall upper sides. The key grooves 22 are arranged along the axial direction for matching with the keys on the shaft.

[0027] The fixing hole 1 4 , the fixing hole 2 5 , the fixing hole 3 6 , and the fixing hole 4 7 are all threaded holes, and the mounting hole 1 18 , the mounting hole 2 19 , the mounting hole 3 20 , and the mounting hole 4 21 are also threaded holes.

[0028] The opening positions of the mounting hole 18 and the mounting hole 2 19 correspond to the key slot 2 9. The opening positions of the mounting hole 3 20 and the mounting hole 4 21 correspond to the key slot 3 22.

[0029] A keyway 8 is provided on the outer wall of one end of the sleeve 1 on which the telescopic hole sleeve 2 is installed, and the fixing hole 4 and the fixing hole 2 5 are provided on the keyway 8. When the telescopic hole sleeve 2 is located in the sleeve 1 and does not extend out, the left end of the sleeve 1 can be inserted into the shaft hole and matched with the shaft hole through the keyway 8 for connection.

[0030] like Figure 4 , Figure 5 As shown, in a use state, the first hole sleeve 10 and the first shaft sleeve 14 are used to connect the shaft hole and the shaft respectively, the first hole sleeve 10 is inserted into the shaft hole, and the first shaft sleeve 14 is sleeved on the shaft. The fourth hole sleeve 13, the third hole sleeve 12, and the second hole sleeve 11 are all in a non-extended state, and the first hole sleeve 10 extends from the sleeve 1. The mounting hole 18 and the mounting hole 2 19 on the first hole sleeve 10, the second hole sleeve 11, the third hole sleeve 12, and the fourth hole sleeve 13 correspond to each other, and the position of the mounting hole 2 19 corresponds to the position of the fixing hole 14 on the sleeve 1. The bolt is screwed into the keyway 18 and the mounting hole 2 19, so that the first hole sleeve 10, the second hole sleeve 11, the third hole sleeve 12, and the fourth hole sleeve 13 are relatively fixed and all fixed on the sleeve 1. The mounting hole 18 corresponds to the connecting hole on the shaft hole, and the bolt is screwed into the mounting hole 18 and the connecting hole, so that the first hole sleeve 10 is relatively fixed to the shaft hole. The second sleeve 15, the third sleeve 16, and the fourth sleeve 17 are located in the sleeve 1, and the first sleeve 14 extends out from the sleeve 1. The mounting holes 3 20 and 4 21 on the second sleeve 15, the third sleeve 16, and the fourth sleeve 17 correspond to the positions of the fixing holes 3 6 and 4 7 on the sleeve 1, respectively. Bolts are screwed into the fixing holes 3 6 and the mounting holes 3 20 on the second sleeve 15, the third sleeve 16, and the fourth sleeve 17, thereby fixing the second sleeve 15, the third sleeve 16, the fourth sleeve 17 and the sleeve 1 relatively. At the same time, the mounting holes 3 20 on the first sleeve 14 correspond to the positions of the fixing holes 4 7 on the sleeve 1, and bolts are screwed into the fixing holes 4 7, the mounting holes 3 20 on the first sleeve 14, and the mounting holes 4 21 on the remaining sleeves, thereby completing the relative fixation between the sleeve 1, the first sleeve 14, the second sleeve 15, the third sleeve 16, and the fourth sleeve 17. The mounting hole 21 on the first sleeve 14 corresponds to the position of the connecting hole on the shaft, and the connection can be completed by screwing in the bolts.

[0031] like Figure 6 , Figure 7As shown, in another use state, the fourth hole sleeve 13 and the fourth shaft sleeve 17 are used to connect the shaft hole and the shaft respectively, the fourth hole sleeve 13 is inserted into the shaft hole, and the fourth shaft sleeve 17 is sleeved on the shaft. The first hole sleeve 10, the second hole sleeve 11, and the third hole sleeve 12 are all located in the sleeve 1 and are not extended, and the fourth hole sleeve 13 extends from the third hole sleeve 12. The mounting hole 18 and the mounting hole 2 19 on the first hole sleeve 10, the second hole sleeve 11, and the third hole sleeve 12 correspond to the positions of the fixing hole 1 4 and the fixing hole 2 5 on the sleeve 1, respectively, and the mounting hole 2 19 on the fourth hole sleeve 13 corresponds to the mounting hole 18 on the third hole sleeve 12. The bolts are screwed into these corresponding holes to complete the relative fixation between the sleeve 1, the first hole sleeve 10, the second hole sleeve 11, the third hole sleeve 12, and the fourth hole sleeve 13. The mounting hole 18 on the fourth hole sleeve 13 corresponds to the position of the connecting hole on the shaft hole, and the bolts are screwed in to complete the fixation between the fourth hole sleeve 13 and the shaft hole. The first sleeve 14, the second sleeve 15, the third sleeve 16 and the fourth sleeve 17 are all in an unextended state, and the mounting holes 3 20 and 4 21 on the first sleeve 14, the second sleeve 15, the third sleeve 16 and the fourth sleeve 17 correspond to the positions of the fixing holes 3 6 and 4 7 on the sleeve 1, and the mounting hole 4 21 on the fourth sleeve 17 corresponds to the position of the connecting hole on the shaft. When the bolts are screwed into the corresponding holes, the relative fixation of the sleeve 1, the first sleeve 14, the second sleeve 15, the third sleeve 16 and the fourth sleeve 17 can be completed, and the shaft and the fourth sleeve 17 can be fixed at the same time.

[0032] like Figure 8 , Fig. 9 As shown, in another use state, the fourth hole sleeve 13 and the fourth shaft sleeve 17 are used to connect the shaft hole and the shaft respectively, and the state of the telescopic hole sleeve 2 is the same as that in another use state. The fourth shaft sleeve 17 extends from the third shaft sleeve 16, and the third shaft sleeve 16, the second shaft sleeve 15, and the first shaft sleeve 14 are in the non-extended state and are all located in the sleeve 1. The mounting holes 3 20 and the mounting holes 4 21 on the first shaft sleeve 14, the second shaft sleeve 15, and the third shaft sleeve 16 correspond to the positions of the fixing holes 3 6 and the fixing holes 4 7 on the sleeve 1, the mounting holes 3 20 on the fourth shaft sleeve 17 correspond to the positions of the mounting holes 4 21 on the third shaft sleeve 16, and the mounting holes 4 21 on the fourth shaft sleeve 17 correspond to the positions of the connecting holes on the shaft. The bolts are screwed into the corresponding holes to complete the relative fixation between the first shaft sleeve 14, the second shaft sleeve 15, the third shaft sleeve 16, the fourth shaft sleeve 17, and the sleeve 1, and the shaft and the fourth shaft sleeve 17 are relatively fixed. In this way, the shaft holes and shafts with longer spacing are connected and transmitted.

[0033] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A multi-stage variable diameter connecting sleeve, characterized in that: The invention comprises a sleeve (1), wherein two ends of the sleeve (1) are respectively provided with a telescopic hole sleeve (2) and a telescopic shaft sleeve (3), wherein the telescopic hole sleeve (2) comprises a plurality of hole sleeves which are fitted in sequence, and a second key groove (9) is provided on the outer walls of the plurality of hole sleeves, and the telescopic shaft sleeve (3) comprises a plurality of shaft sleeves which are fitted in sequence, and a third key groove (22) is provided on the inner walls of the shaft sleeves.

2. The multi-stage variable diameter connecting sleeve according to claim 1, characterized in that: The sleeve (1) is provided with a fixing hole 1 (4), a fixing hole 2 (5), a fixing hole 3 (6) and a fixing hole 4 (7); the fixing hole 1 (4), the fixing hole 2 (5), the fixing hole 3 (6) and the fixing hole 4 (7) are all arranged through the sleeve (1); the hole sleeve is provided with a mounting hole 1 (18) and a mounting hole 2 (19); the spacing between the fixing hole 1 (4) and the fixing hole 2 (5) is the same as the spacing between the mounting hole 1 (18) and the mounting hole 2 (19); the shaft sleeve is provided with a mounting hole 3 (20) and a mounting hole 4 (21); the spacing between the fixing hole 3 (6) and the fixing hole 4 (7) is the same as the spacing between the mounting hole 3 (20) and the mounting hole 4 (21).

3. The multi-stage variable diameter connecting sleeve according to claim 2, characterized in that: The opening positions of the mounting hole 1 (18) and the mounting hole 2 (19) correspond to the keyway 2 (9).

4. The multi-stage variable diameter connecting sleeve according to claim 2, characterized in that: The opening positions of the mounting hole three (20) and the mounting hole four (21) correspond to the keyway three (22).

5. The multi-stage variable diameter connecting sleeve according to claim 2, characterized in that: A key groove (8) is provided on the outer wall of one end of the sleeve (1) on which the telescopic hole sleeve (2) is installed.

6. The multi-stage variable diameter connecting sleeve according to claim 5, characterized in that: The fixing hole 1 (4) and the fixing hole 2 (5) are provided on the keyway 1 (8).

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