Motor end cover bolt synchronous tightening device

Abstract

The utility model discloses a motor end cover bolt synchronous tightening device relates to motor assembly technical field, including equipment shell, the upper end fixed mounting of equipment shell has the sealing cover, the fixed mounting of protection casing has on equipment shell, and four tightening mechanisms are fixedly installed with the ring shape equidistance of equipment shell bottom, and the tightening mechanism includes the mechanism casing fixedly installed in the equipment shell bottom, and the hollow shaft rotation is installed on the mechanism casing upper end, and the output shaft rotation is installed on the mechanism casing lower extreme, and the output shaft upper extreme fixed mounting has the block that hits, and the telescopic axle slidingly is installed in the hollow shaft, and the telescopic axle lower extreme fixed mounting has the block that rotates and hits, and the block that rotates and hits bottom fixed mounting has the lug, and the hollow shaft is connected with the drive mechanism. This motor end cover bolt synchronous tightening device, through the cooperation of drive mechanism and tightening mechanism, can tighten four bolts at one time, improve the installation speed, and can adjust the torque in the bolt tightening process.

Description

Technical Field

[0001] This utility model relates to the field of motor assembly technology, specifically a synchronous tightening device for motor end cover bolts. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It mainly consists of a stator, rotor, bearings, end covers, cooling system, and commutator. Its working principle is based on electromagnetic induction, generating torque through the interaction of the magnetic fields of the stator and rotor. It is widely used in industry, home appliances, transportation, and other fields.

[0003] In the prior art, the patent announcement number CN222763692U discloses a motor end cover assembly, including an end cover body, wherein four fixing ears are fixedly connected to the outer surface of the end cover body, and each of the four fixing ears is threadedly connected with a bolt.

[0004] The motor end cover is typically secured with four bolts, located at the four corners of the end cover to ensure a firm connection to the motor housing. During installation, the operator uses an electric screwdriver to tighten each of the four bolts into the corresponding holes on the motor housing. Specifically, one bolt is first aligned with its hole, then tightened with the electric screwdriver, and then the remaining three bolts are tightened in the same way. This process gradually achieves a tight fixation between the end cover and the motor housing. However, because each bolt needs to be tightened individually, the entire installation process is relatively time-consuming and slow. Therefore, a synchronous tightening device for the motor end cover bolts is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a synchronous tightening device for motor end cover bolts to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a synchronous tightening device for motor end cover bolts, comprising a device housing, a sealing cover fixedly installed on the upper end of the device housing, a protective shell fixedly installed on the device housing, a handle fixedly installed on the upper end of the protective shell, and four tightening mechanisms fixedly installed in a ring at equal intervals on the bottom of the device housing. Each tightening mechanism includes a mechanism housing fixedly installed on the bottom of the device housing, a hollow shaft rotatably installed on the upper end of the mechanism housing, an output shaft rotatably installed on the lower end of the mechanism housing, a strike block fixedly installed on the upper end of the output shaft, a telescopic shaft slidably installed inside the hollow shaft, a rotating strike block fixedly installed on the lower end of the telescopic shaft, a protrusion fixedly installed on the bottom of the rotating strike block, and a drive mechanism connected to the hollow shaft.

[0007] Preferably, the tightening mechanism further includes an adjustment knob threaded onto the mechanism housing, adjustment grooves are provided on both sides of the mechanism housing, a positioning seat is movably installed inside the mechanism housing, a turntable is rotatably installed at the bottom of the positioning seat, and a spring is sleeved on the telescopic shaft.

[0008] Preferably, bearings are installed at both the upper and lower ends of the mechanism housing, and the hollow shaft and the output shaft are respectively installed at the upper and lower ends of the mechanism housing via bearings.

[0009] Preferably, the positioning seat is slidably installed in the mechanism housing via an adjusting groove, one end of the spring is connected to the turntable, and the other end of the spring is connected to the rotary block.

[0010] Preferably, the drive mechanism includes a motor fixedly installed inside the protective housing and a retainer fixedly installed inside the equipment housing. A first reduction gear is rotatably installed on the retainer, a second reduction gear is rotatably installed on one side of the first reduction gear, an output gear is rotatably installed on one side of the second reduction gear, and a drive shaft is fixedly installed in the middle of the output gear, with the lower end of the drive shaft fixedly installed on a hollow shaft.

[0011] Preferably, an input gear is fixedly installed at the output end of the motor, and the input gear meshes with the first reduction gear.

[0012] Preferably, the first reduction gear meshes with the second reduction gear, and the second reduction gear meshes with the output gear.

[0013] Preferably, the first reduction gear, the second reduction gear, and the output gear are all rotatably mounted inside the equipment housing via a cage.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this application, after the motor is started, the motor drives the input gear to rotate. After being reduced by the first reduction gear and the second reduction gear, the output gear drives the drive shaft to rotate. The rotation of the drive shaft drives the rotating block to rotate. The rotation of the rotating block drives the impact block to rotate. The rotation of the impact block drives the nut sleeve at the end of the output shaft to rotate, thereby completing the tightening operation of four bolts at once and improving installation efficiency.

[0015] 2. In this application, when the tightened bolts reach a specific torque, the spring is forced to compress, causing the striking block to no longer drive the output shaft on the striking block to rotate, thereby ensuring that all four tightened bolts can reach the specific torque value. At the same time, the adjustment knob can be turned downwards to move the positioning seat downwards. After the positioning seat moves downwards, the spring will be further compressed, increasing the downward pressure of the striking block on the striking block, thereby adjusting the torque during the bolt tightening process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the drive mechanism of this utility model; Figure 4 This is a schematic diagram of the tightening mechanism of this utility model; Figure 5 This is a schematic diagram of the tightening mechanism of this utility model.

[0017] The markings in the diagram are: 1. Equipment casing; 2. Sealing cover; 3. Protective housing; 4. Handle; 5. Drive mechanism; 501. Motor; 502. Cage; 503. Input gear; 504. First reduction gear; 505. Second reduction gear; 506. Drive shaft; 507. Output gear; 6. Tightening mechanism; 601. Mechanism housing; 602. Adjustment knob; 603. Adjustment slide; 604. Hollow shaft; 605. Positioning seat; 606. Turntable; 607. Spring; 608. Telescopic shaft; 609. Protrusion; 610. Impact block; 611. Impacted block; 612. Output shaft. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a synchronous tightening device for motor end cover bolts, including a device housing 1, a sealing cover 2 fixedly installed on the upper end of the device housing 1, a protective shell 3 fixedly installed on the device housing 1, a handle 4 fixedly installed on the upper end of the protective shell 3, four tightening mechanisms 6 fixedly installed in a ring at equal intervals at the bottom of the device housing 1, and a drive mechanism 5 connected to the hollow shaft 604.

[0020] Specifically, the user can lift the entire device using the handle 4, which is equipped with a switch for the motor 501, allowing the motor 501 to be started. Through the combined use of the drive mechanism 5 and the tightening mechanism 6, four bolts can be tightened at once, increasing the installation speed, and the torque during the bolt tightening process can be adjusted.

[0021] Example 2: Figure 2 , Figure 3 and Figure 5As shown, the tightening mechanism 6 includes a mechanism housing 601 fixedly installed at the bottom of the equipment housing 1. A hollow shaft 604 is rotatably installed at the upper end of the mechanism housing 601, and an output shaft 612 is rotatably installed at the lower end of the mechanism housing 601. A strike block 611 is fixedly installed at the upper end of the output shaft 612. A telescopic shaft 608 is slidably installed inside the hollow shaft 604. A rotating strike block 610 is fixedly installed at the lower end of the telescopic shaft 608. A protrusion 609 is fixedly installed at the bottom of the rotating strike block 610. The drive mechanism 5 includes a motor 501 fixedly installed inside the protective housing 3 and a retainer 502 fixedly installed inside the equipment housing 1. A first reduction gear 504 is rotatably installed on the upper part of the retainer 502. A second reduction gear 505 is rotatably installed on one side of the first reduction gear 504. An output gear 507 is rotatably installed on one side of the second reduction gear 505. A drive shaft 506 is fixedly installed in the middle of the output gear 507, and the lower end of the drive shaft 506 is fixedly installed on the hollow shaft 604.

[0022] Specifically, after starting the motor 501, the motor drives the input gear 503 to rotate. The rotation of the input gear 503 then drives the first reduction gear 504 to rotate. The rotation of the first reduction gear 504 drives the second reduction gear 505 to rotate. The rotation of the second reduction gear 505 causes the output gear 507 to rotate. The rotation of the output gear 507 drives the drive shaft 506 to rotate. The rotation of the drive shaft 506 drives the hollow shaft 604 to rotate. The rotation of the hollow shaft 604 drives the telescopic shaft 608 to rotate. The rotation of the telescopic shaft 608 drives the striking block 610 to rotate. The rotation of the striking block 610 drives the impact block 611 to rotate. The rotation of the impact block 611 drives the output shaft 612 to rotate. In this way, four bolts are tightened at once, improving installation efficiency.

[0023] Example 3: Figure 2 and Figure 4 As shown, the tightening mechanism 6 also includes an adjustment knob 602 threaded onto the mechanism housing 601. Adjustment grooves 603 are provided on both sides of the mechanism housing 601. A positioning seat 605 is movably installed inside the mechanism housing 601. A turntable 606 is rotatably installed at the bottom of the positioning seat 605. A spring 607 is sleeved on the telescopic shaft 608. Bearings are installed at both the upper and lower ends of the mechanism housing 601. The hollow shaft 604 and the output shaft 612 are respectively installed at the upper and lower ends of the mechanism housing 601 through the bearings.

[0024] Specifically, when the tightened bolts reach a specific torque, the spring 607 is forced to compress, causing the striking block 610 to no longer drive the output shaft 612 on the striking block 611 to rotate, thereby ensuring that all four tightened bolts can reach the specific torque value.

[0025] Simultaneously, the adjusting knob 602 can be rotated downwards to move the positioning seat 605 downwards. After the positioning seat 605 moves downwards, the spring 607 will be further compressed, thereby increasing the downward pressure of the striking block 610 on the striking block 611, thus achieving the adjustment of the torque during the bolt tightening process.

[0026] Working principle: During installation, first fix the nut sleeve to the end of the output pulley 612. Then, align the nut sleeve with the four bolts on the end cover. After aligning the nut sleeve with the four bolts on the end cover, start the motor 501. Starting the motor 501 will drive the input gear 503 to rotate. The rotation of the input gear 503 will drive the first reduction gear 504 to rotate. The rotation of the first reduction gear 504 will drive the second reduction gear 505 to rotate. The rotation of the second reduction gear 505 will drive the output gear 507 to rotate. The rotation of the output gear 507 will drive the drive shaft 506 to rotate. The rotation of the drive shaft 506 will drive the hollow shaft 604 to rotate. The rotation of the hollow shaft 604 will drive the telescopic shaft 608 to rotate. The rotation of the telescopic shaft 608 will drive the striking block 610 to rotate. The rotation of the striking block 610 will drive the impact block 611 to rotate. The rotation of the impact block 611 will drive the output shaft 612 to rotate, thereby tightening the four bolts at once and improving the installation speed. Furthermore, once the tightened bolts reach a specific torque, the spring 607 is forced to compress, causing the striking block 610 to no longer drive the output shaft 612 on the impact block 611 to rotate, thus ensuring that all four tightened bolts reach the specific torque value. Simultaneously, the adjustment knob 602 can be turned downwards, causing the positioning seat 605 to move downwards. After the positioning seat 605 moves downwards, the spring 607 is further compressed, increasing the downward pressure of the striking block 610 on the impact block 611, thereby adjusting the torque during the bolt tightening process.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A synchronous tightening device for motor end cover bolts, comprising a housing (1), a sealing cover (2) fixedly installed on the upper end of the housing (1), a protective shell (3) fixedly installed on the housing (1), and a handle (4) fixedly installed on the upper end of the protective shell (3), characterized in that: The bottom of the equipment housing (1) is fixedly installed with four tightening mechanisms (6) in a ring shape at equal intervals. The tightening mechanism (6) includes a mechanism housing (601) fixedly installed at the bottom of the equipment housing (1). A hollow shaft (604) is rotatably installed at the upper end of the mechanism housing (601). An output shaft (612) is rotatably installed at the lower end of the mechanism housing (601). A receiving block (611) is fixedly installed at the upper end of the output shaft (612). A telescopic shaft (608) is slidably installed inside the hollow shaft (604). A rotating block (610) is fixedly installed at the lower end of the telescopic shaft (608). A protrusion (609) is fixedly installed at the bottom of the rotating block (610). A drive mechanism (5) is connected to the hollow shaft (604).

2. The synchronous tightening device for motor end cover bolts according to claim 1, characterized in that: The tightening mechanism (6) also includes an adjustment knob (602) threaded onto the mechanism housing (601), adjustment grooves (603) are provided on both sides of the mechanism housing (601), a positioning seat (605) is movably installed inside the mechanism housing (601), a turntable (606) is rotatably installed at the bottom of the positioning seat (605), and a spring (607) is sleeved on the telescopic shaft (608).

3. The synchronous tightening device for motor end cover bolts according to claim 2, characterized in that: Bearings are installed at both the upper and lower ends of the housing (601). The hollow shaft (604) and the output shaft (612) are respectively installed at the upper and lower ends of the housing (601) via the bearings.

4. The synchronous tightening device for motor end cover bolts according to claim 3, characterized in that: The positioning seat (605) is slidably installed in the mechanism housing (601) through the adjusting slide (603). One end of the spring (607) is connected to the turntable (606), and the other end of the spring (607) is connected to the rotary block (610).

5. The synchronous tightening device for motor end cover bolts according to claim 4, characterized in that: The drive mechanism (5) includes a motor (501) fixedly installed in the protective housing (3) and a retainer (502) fixedly installed in the equipment housing (1). A first reduction gear (504) is rotatably installed on the upper part of the retainer (502). A second reduction gear (505) is rotatably installed on one side of the first reduction gear (504). An output gear (507) is rotatably installed on one side of the second reduction gear (505). A drive shaft (506) is fixedly installed in the middle of the output gear (507), and the lower end of the drive shaft (506) is fixedly installed on the hollow shaft (604).

6. The synchronous tightening device for motor end cover bolts according to claim 5, characterized in that: An input gear (503) is fixedly installed at the output end of the motor (501), and the input gear (503) meshes with the first reduction gear (504).

7. The synchronous tightening device for motor end cover bolts according to claim 6, characterized in that: The first reduction gear (504) meshes with the second reduction gear (505), and the second reduction gear (505) meshes with the output gear (507).

8. The synchronous tightening device for motor end cover bolts according to claim 7, characterized in that: The first reduction gear (504), the second reduction gear (505) and the output gear (507) are all rotatably mounted in the equipment housing (1) via a retainer (502).

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