Motor shaft head structure

Abstract

The utility model discloses a motor shaft head structure which comprises a crankshaft, and a rear baffle is fixedly sleeved on the crankshaft. The sleeve shaft is detachably connected to the crankshaft in a sleeving mode, the rear end of the sleeve shaft abuts against the rear baffle, a key groove is formed in the side wall of the sleeve shaft, a first bolt is transversely connected to the crankshaft and the sleeve shaft in a penetrating mode, and the sleeve shaft is provided with a front baffle; a plurality of second bolts are evenly distributed on the front baffle, and the threaded ends of the second bolts penetrate through the front baffle and are connected to the side wall of the sleeve shaft in a meshed mode. Through the detachable sleeve connection design of the crankshaft and the sleeve shaft, high flexibility is achieved. The outer diameter of the sleeve shaft is matched with the inner hole of the driving gear, and the key groove formed in the side wall is matched with the spline of the inner hole of the driving gear, so that tight connection between the driving gear and the sleeve shaft is ensured, and rotation synchronism is also ensured. Meanwhile, the sleeve shaft and the crankshaft are fixed through transverse penetrating connection of the first bolt, the fixing mode is simple and effective, and the stability of the sleeve shaft on the crankshaft is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor shaft head structure belongs to motor shaft head technical field. BACKGROUND

[0002] Under the background of the rapid development of motor drive technology, the traditional motor shaft head structure often has problems such as poor connection fixation, difficult disassembly and maintenance and insufficient rotation synchronization. Especially in the application scene that needs to frequently replace or adjust the driving gear, these problems are particularly prominent. The traditional fixed connection mode, such as welding or riveting, not only limits the flexibility of the motor shaft head, but also increases the difficulty and cost of subsequent maintenance. In addition, due to the insufficient tightness or poor synchronization between the driving gear and the shaft head, it often leads to low transmission efficiency, and even causes mechanical failure. In order to overcome these technical difficulties, a motor shaft head structure is improved. SUMMARY

[0003] The utility model discloses a motor shaft head structure to solve the problem in the background art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a motor shaft head structure, comprising:

[0005] The machine shaft is installed on the motor, and the rear baffle is fixedly sleeved on the machine shaft;

[0006] The sleeve shaft is detachably sleeved on the machine shaft, the rear end of the sleeve shaft abuts against the rear baffle, the outer diameter of the sleeve shaft is matched with the inner hole of the driving gear, the side wall of the sleeve shaft is provided with a key groove, and the key groove is matched with the inner hole spline of the driving gear;

[0007] The first bolt is transversely connected between the machine shaft and the sleeve shaft, and is used for fixing the sleeve shaft on the machine shaft;

[0008] The front baffle is arranged on the sleeve shaft;

[0009] Among them, the front baffle is uniformly distributed with a plurality of second bolts, and the threaded ends of the plurality of second bolts are all penetrated through the front baffle and engaged and connected on the side wall of the sleeve shaft.

[0010] Preferably, the end of the machine shaft is fixed with an end cover, the inside of the end cover is rotationally connected with a turntable, and the turntable is uniformly distributed with bosses;

[0011] A plurality of slide rods are uniformly distributed on the end cover and around the turntable through the first spring, one end of each slide rod is slidingly connected to the side wall of the turntable, and the other end of each slide rod is provided with a fork head;

[0012] The second bolt is provided with a ring groove, and the prong penetrates the side wall of the rotating disc and is inserted into the ring groove.

[0013] Preferably, the inner hole of the sleeve shaft is provided with a guide groove, the outer wall of the machine shaft is provided with a guide rail matched with the guide groove, and the first bolt penetrates out of the guide rail.

[0014] Preferably, two connecting rods are symmetrically fixed on the end cover.

[0015] When the end cover is installed at the end of the machine shaft, the two connecting rods are respectively inserted between the guide rail and the guide groove on the same side.

[0016] Preferably, a roller is rotationally connected to the end of the sliding rod away from the prong, and the roller is fixedly connected to the rotating disc.

[0017] Preferably, a first positioning hole is formed in the center of the end cover, a second positioning hole is formed in the center of the rotating disc, and when the rotating disc is rotated to make the second positioning hole coincide with the first positioning hole, the boss is in a state of pressing the sliding rod.

[0018] A pull block is arranged on the end cover, a pin block is arranged on the pull block, and the pin block is movably inserted into the second positioning hole and the first positioning hole.

[0019] Preferably, a sliding block is slidably connected to the inside of the end cover through a second spring, and the sliding block and the pin block are connected through a connecting rod.

[0020] Preferably, a pull head is fixedly connected to the outer side plate of the pull block.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] The detachable sleeve connection design of the machine shaft and the sleeve shaft realizes the flexibility of height. The outer diameter of the sleeve shaft is matched with the inner hole of the driving gear, and the key groove formed in the side wall is matched with the inner hole spline of the driving gear, which not only ensures the close connection between the driving gear and the sleeve shaft, but also ensures the synchronism of rotation. At the same time, the sleeve shaft and the machine shaft are fixed by the transverse connection of the first bolt, which is simple and effective, and not only ensures the stability of the sleeve shaft on the machine shaft, but also facilitates subsequent disassembly and maintenance. And through the cooperation of the front baffle and the second bolt, the overall stability is further enhanced. The second bolt is evenly distributed on the front baffle, the threaded end penetrates the front baffle and is engaged with the side wall of the sleeve shaft, which not only prevents the axial movement of the driving gear during rotation, but also improves the anti-vibration performance of the entire shaft head structure. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic view of the driving gear installation structure.

[0024] Figure 2 It is the whole structure schematic view of the utility model;

[0025] Figure 3 It is the whole structure explosion view of the utility model;

[0026] Figure 4 It is the section view of the end cover, the rotating disc, the first spring and the sliding rod of the utility model;

[0027] Figure 5 It is the section view of the end cover, the rotating disc, the pulling block and the pin block of the utility model Figure 1 ;

[0028] Figure 6 It is the section view of the end cover, the rotating disc, the pulling block and the pin block of the utility model Figure 2 ;

[0029] Figure 7 It is the section view of the end cover, the rotating disc, the pulling block and the pin block of the utility model Figure 3 ;

[0030] Figure 8 It is the structure schematic view of the second bolt of the utility model.

[0031] In the drawing,

[0032] 1, axle, 101, back baffle, 102, guide rail;

[0033] 2, sleeve shaft, 201, keyway, 202, guide slot;

[0034] 3, first bolt, 4, front baffle, 5, second bolt, 501, ring groove;

[0035] 6, end cover, 601, connecting rod, 602, first positioning hole;

[0036] 7, rotating disc, 701, boss, 702, second positioning hole;

[0037] 8, first spring, 9, sliding rod, 901, fork head;

[0038] 10, roller, 11, pulling block, 1101, pull head, 12, pin block, 13, second spring;

[0039] 14, sliding block, 15, connecting rod. DETAILED DESCRIPTION

[0040] The utility model will be explained below with specific embodiment, but is not the limitation of the utility model.

[0041] Example one

[0042] As Figures 1-8As shown in the embodiment, the motor shaft head structure comprises a shaft 1, the shaft 1 is installed on the motor, and a rear baffle 101 is fixedly sleeved on the shaft 1; a sleeve shaft 2 is detachably sleeved on the shaft 1, the rear end of the sleeve shaft 2 abuts against the rear baffle 101, the outer diameter of the sleeve shaft 2 is matched with the inner hole of the driving gear, a key groove 201 is formed in the side wall of the sleeve shaft 2, and the key groove 201 is matched with the inner hole spline of the driving gear; a first bolt 3 is transversely connected between the shaft 1 and the sleeve shaft 2, and is used for fixing the sleeve shaft 2 on the shaft 1, as shown in Figure 3 As shown in the embodiment, the shaft 1 and the sleeve shaft 2 are both provided with a through hole for the first bolt 3 to penetrate, the central axis of the through hole is perpendicular to the rotating shafts of the shaft 1 and the sleeve shaft 2, when the sleeve shaft 2 is sleeved on the shaft 1, the through hole on the sleeve shaft 2 is aligned with the through hole on the shaft 1, at this time, the first bolt 3 is inserted into the through hole, and then a nut is screwed on the threaded end of the first bolt 3, so that the sleeve shaft 2 is fixedly sleeved on the shaft 1; the sleeve shaft 2 is provided with a front baffle 4; wherein the front baffle 4 is uniformly provided with a plurality of second bolts 5, the threaded ends of the plurality of second bolts 5 penetrate the front baffle 4 and are engaged and connected on the side wall of the sleeve shaft 2;

[0043] When installing, the sleeve shaft 2 is sleeved on the shaft 1, and the sleeve shaft 2 is fixed on the shaft 1 by the first bolt 3, then the driving gear is sleeved on the sleeve shaft 2, and the driving gear is sleeved on the sleeve shaft 2, finally, the front baffle 4 is fixed on the sleeve shaft 2 by the second bolt 5, the rear baffle 101 and the front baffle 4 abut on the two side walls of the driving gear respectively, and the key groove 201 and the spline of the inner hole of the driving gear cooperate, when the shaft 1 rotates, the shaft 1 rotates synchronously with the sleeve shaft 2 and the driving gear.

[0044] Embodiment two

[0045] As shown in the embodiment, Figures 3-4 and Figure 8 In order to prevent the second bolt 5 from loosening, the end of the shaft 1 is fixedly provided with an end cover 6, the inside of the end cover 6 is rotatably connected with a rotating disc 7, the rotating disc 7 is uniformly provided with a plurality of bosses 701; a plurality of slide rods 9 are uniformly distributed on the end cover 6 and located around the rotating disc 7 by the first spring 8, one end of each slide rod 9 is slidably connected with the side wall of the rotating disc 7, and the other end of each slide rod 9 is provided with a fork head 901; wherein the second bolt 5 is provided with a ring groove 501, and the fork head 901 penetrates the side wall of the rotating disc 7 and is inserted into the inside of the ring groove 501.

[0046] Each slide rod 9 is provided with a first spring 8, one end of the first spring 8 abuts against the side wall of the slide rod 9, and the other end of the first spring 8 abuts against the side wall of the end cover 6, the first spring 8 exerts a spring pressure on the slide rod 9 to shrink into the inside of the end cover 6;

[0047] The mounting process of the second bolt 5 is that: rotating the rotating disc 7, the boss 701 on the rotating disc 7 is staggered with the slide bar 9, at this time, the slide bar 9 and the fork head 901 are retracted into the end cover 6 under the elastic pressing action of the first spring 8, in this state, the front baffle 4 is abutted against the sleeve shaft 2, and the second bolt 5 is used for fixing, in this way, the annular groove 501 on the second bolt 5 corresponds to one fork head 901, the rotating disc 7 is rotated, the boss 701 pushes out the slide bar 9, so that the fork head 901 is inserted into the inside of the annular groove 501, the cooperation of the fork head 901 and the annular groove 501 can effectively prevent the second bolt 5 from loosening.

[0048] In order to ensure that the through holes on the sleeve shaft 2 are aligned with the through holes on the machine shaft 1, the inner hole of the sleeve shaft 2 is provided with a guide groove 202, the outer wall of the machine shaft 1 is provided with a guide rail 102 matched with the guide groove 202, and the first bolt 3 penetrates out of the guide rail 102, when the sleeve shaft 2 is sleeved on the machine shaft 1, the guide rail 102 and the guide groove 202 are matched, so that the sleeve shaft 2 is sleeved on the machine shaft 1 at a fixed angle, thereby ensuring that the through holes on the sleeve shaft 2 are aligned with the through holes on the machine shaft 1.

[0049] As shown in Figure 2 With Figure 3 In order to fix the end cover 6 on the machine shaft 1, two connecting rods 601 are fixed symmetrically on the end cover 6; when the end cover 6 is installed on the end of the machine shaft 1, the two connecting rods 601 are respectively inserted between the guide rail 102 and the guide groove 202 on the same side;

[0050] The side wall of the connecting rod 601 is provided with a corresponding through hole, when the two connecting rods 601 are respectively inserted between the guide rail 102 and the guide groove 202 on the same side, the through hole on the connecting rod 601 is aligned with the through holes on the sleeve shaft 2 and the machine shaft 1, in this way, the first bolt 3 can be used to fix the sleeve shaft 2 and the end cover 6 on the machine shaft 1 at the same time.

[0051] The end of the slide bar 9 away from the fork head 901 is rotatably connected with a roller 10, and the roller 10 is fixedly connected to the rotating disc 7.

[0052] Example three

[0053] As shown in Figures 5-7As shown, on the basis of embodiment two, in order to fix the boss 701 in the state of pressing the slide rod 9, the center of the end cover 6 is provided with a first positioning hole 602, and the center of the rotating disc 7 is provided with a second positioning hole 702, when the rotating disc 7 is rotated to make the second positioning hole 702 coincide with the first positioning hole 602, the boss 701 is in the state of pressing the slide rod 9, and the first positioning hole 602 and the second positioning hole 702 are rectangular; the end cover 6 is provided with a pull block 11, the pull block 11 is provided with a pin block 12, and the pin block 12 is movably inserted into the inside of the second positioning hole 702 and the first positioning hole 602. The inside of the end cover 6 is slidably connected with a sliding block 14 through a second spring 13, the sliding block 14 and the pin block 12 are connected through a connecting rod 15, and the cross section of the connecting rod 15 is circular. The outer side plate of the pull block 11 is fixedly connected with a pull head 1101.

[0054] When the second positioning hole 702 coincides with the first positioning hole 602, so that the pin block 12 is inserted into the inside of the second positioning hole 702 and the first positioning hole 602 at the same time, the cooperation of the pin block 12, the second positioning hole 702 and the first positioning hole 602 can limit the rotation of the rotating disc 7, that is, the boss 701 is fixed in the state of pressing the slide rod 9;

[0055] When it is needed to disassemble the driving gear (that is, it is needed to unscrew the second bolt 5 to disassemble the front baffle 4), the pull block 11 is pulled through the pull head 1101 (for example, the pull head 1101 is bitten by a pair of pliers to pull the pull block 11), the pull block 11 is compressed and slid with the pin block 12, the connecting rod 15 and the sliding block 14 through the second spring 13, so that the pin block 12 is pulled out from the first positioning hole 602, in this state, the rotating disc 7 is rotated together under the cooperation of the pin block 12 and the second positioning hole 702, then the boss 701 on the rotating disc 7 is staggered with the slide rod 9, and the slide rod 9 is retracted into the end cover 6 under the elastic pressing action of the first spring 8, in this state, the second bolt 5 can be unscrewed, so as to replace the driving gear.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate but not to limit the technical solutions of the present application, although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present application can still be modified or replaced equivalently without departing from the spirit and scope of the present application, any modification or partial replacement should be covered in the scope of the claims of the present application.

Claims

1. A motor shaft head structure, characterized in that: include: A crankshaft (1), the crankshaft (1) being mounted on the motor, and a rear baffle (101) being fixedly sleeved on the crankshaft (1); A sleeve shaft (2), the sleeve shaft (2) is detachably sleeved on the machine shaft (1), the rear end of the sleeve shaft (2) abuts against the rear baffle (101), the outer diameter of the sleeve shaft (2) is adapted to the inner hole of the driving gear, and a keyway (201) is provided on the side wall of the sleeve shaft (2), and the keyway (201) is adapted to the spline of the inner hole of the driving gear; a first bolt (3), the first bolt (3) being laterally connected to the machine shaft (1) and the sleeve shaft (2) and being used to fix the sleeve shaft (2) to the machine shaft (1); A front baffle (4), the front baffle (4) being arranged on the sleeve shaft (2); A plurality of second bolts (5) are evenly distributed on the front baffle (4), and the threaded ends of the plurality of second bolts (5) all penetrate the front baffle (4) and are meshedly connected to the side wall of the sleeve shaft (2).

2. The motor shaft head structure according to claim 1, characterized in that: An end cap (6) is fixed to the end of the shaft (1), and the interior of the end cap (6) is rotatably connected to a turntable (7), and bosses (701) are evenly distributed on the turntable (7); A plurality of slide bars (9) are evenly distributed on the end cover (6) and around the turntable (7) via a first spring (8), one end of each slide bar (9) is slidably connected to the side wall of the turntable (7), and the other end of each slide bar (9) is provided with a fork (901); The second bolt (5) is provided with an annular groove (501), and the fork head (901) passes through the side wall of the turntable (7) and is inserted into the interior of the annular groove (501).

3. The motor shaft head structure according to claim 2, characterized in that: A guide groove (202) is provided in the inner hole of the sleeve shaft (2), a guide rail (102) adapted to the guide groove (202) is provided on the outer wall of the machine shaft (1), and the first bolt (3) extends through the guide rail (102).

4. The motor shaft head structure according to claim 3, characterized in that: Two connecting rods (601) are symmetrically fixed on the end cover (6); When the end cover (6) is mounted on the end of the machine shaft (1), the two connecting rods (601) are respectively inserted between the guide rail (102) and the guide groove (202) on the same side.

5. The motor shaft head structure according to claim 2, characterized in that: One end of the slide rod (9) away from the fork head (901) is rotatably connected to a roller (10), and the roller (10) is fixedly connected to the turntable (7).

6. The motor shaft head structure according to claim 2, characterized in that: A first positioning hole (602) is provided at the center of the end cover (6), and a second positioning hole (702) is provided at the center of the turntable (7). When the turntable (7) is rotated so that the second positioning hole (702) coincides with the first positioning hole (602), the boss (701) is in a state of pressing the slide bar (9); A pull block (11) is provided on the end cover (6), and a pin block (12) is provided on the pull block (11). The pin block (12) is movably inserted into the interior of the second positioning hole (702) and the first positioning hole (602).

7. The motor shaft head structure according to claim 6, characterized in that: The interior of the end cover (6) is slidably connected to a slider (14) via a second spring (13), and the slider (14) is connected to the pin block (12) via a connecting rod (15).

8. A motor shaft head structure according to claim 6 or 7, characterized in that: A pull head (1101) is fixedly connected to the outer plate of the pull block (11).

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