Stepping motor of worm and gear reduction gearbox

Abstract

The utility model belongs to the technical field of motors, in particular to a worm and gear reduction gearbox stepping motor, which comprises a driving motor and a reduction gearbox, the driving end of the driving motor is in driving connection with a driving worm, the upper part of the driving worm is in meshing transmission connection with a turbine, and the turbine is arranged in the reduction gearbox through a turbine shaft and a turbine shaft seat. Transmission gear sets are installed at the two ends of the turbine shaft, an output shaft is installed in the reduction gearbox through an output bearing, output gear sets in meshing transmission connection with the transmission gear sets are installed at the two ends of the output shaft, a locking clamping sleeve is installed in the middle of the output shaft, and a positioning locking mechanism used for locking the output shaft is installed on a back plate in the reduction gearbox. According to the utility model, the locking push rod drives the locking clamp to be clamped with the locking clamping sleeve, so that the positioning block is positioned and inserted into the positioning insertion hole to lock the output shaft; the positioning locking mechanism is used for bearing all locking holding force, and the problem that teeth of a worm and a worm gear are damaged due to the fact that a worm structure bears all locking holding force is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motor technical field, concretely relates to a worm gear reduction gearbox step motor. BACKGROUND

[0002] Through the search, the patent publication No. CN219458830U discloses a high-strength long-life worm gear reduction gearbox step motor, including motor body, the motor body is provided with the output worm of power output, and the reduction gearbox is fixed on the upper side of output worm;Shorten the force arm of two-stage gear assembly shaft, increase the ability of impact and shear force, the worm support seat can effectively enhance the impact resistance of reduction gearbox to the load reaction force, ensure that the impact force of each gear is less in the harsh environment, can be normal meshing operation.

[0003] But the worm gear reduction gearbox step motor in the above-mentioned worm stops rotating, the worm end cannot drive the worm end to rotate reversely, that is, the worm and the worm have self-locking characteristics;When realizing self-locking, the worm structure as the input end bears all the locking holding force, which is easy to cause damage to the teeth of the worm and the worm.

[0004] Therefore, in order to reduce the damage to the teeth of the worm and the worm, a worm gear reduction gearbox step motor with self-locking performance needs to be developed. SUMMARY

[0005] To solve the problems in the above background art, the utility model provides a worm gear reduction gearbox step motor, the locking push rod drives the locking clamp to move forward and be connected with the locking sleeve, and the positioning block is positioned and inserted in the positioning hole, so as to lock the output shaft;The positioning locking mechanism is used to bear all the locking holding force, which avoids the problem that the worm structure bears all the locking holding force and causes damage to the teeth of the worm and the worm, and prolongs the service life of the worm gear reduction gearbox step motor.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a worm gear reduction gearbox step motor, comprising a drive motor and a reduction gearbox, the drive end of the drive motor is drivingly connected with a drive worm, the drive worm is installed at the bottom of the reduction gearbox through a worm support bearing seat, a turbine is drivingly connected with the drive worm through a worm gear set above the drive worm, the turbine is installed in the reduction gearbox through a turbine shaft and a turbine shaft seat, a transmission gear set is installed on both ends of the turbine shaft, an output shaft is installed in the reduction gearbox through an output bearing, an output gear set is drivingly connected with the transmission gear set through an output gear set installed on both ends of the output shaft, a locking sleeve is installed on the middle part of the output shaft, and a positioning locking mechanism for locking the output shaft is installed on the back plate of the reduction gearbox.

[0007] As a preferred scheme, the positioning locking mechanism comprises a locking clamp and a locking push rod, the locking push rod is installed on the back plate of the reduction gearbox through a mounting plate, the locking clamp is installed on the driving end head of the locking push rod, the locking clamp is provided with a positioning block, and the locking clamp is clamped with the locking sleeve through the driving of the locking push rod.

[0008] As a preferred scheme, the locking push rod adopts a micro electric telescopic rod with a model of WSD50-100.

[0009] As a preferred scheme, the transmission gear set comprises two small transmission gears which are fixedly installed on two ends of the turbine shaft respectively, and the output gear set comprises two large output gears which are fixedly installed on two ends of the output shaft respectively; the large output gears are in gear transmission connection with the small transmission gears one by one.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] The utility model discloses a reduction gearbox is used for positioning and stable support turbine shaft and output shaft, has increased the impact resistance ability, and utilizes transmission gear set to drive the output gear set in gear, guarantees that each stage gear is under the influence of impact force in the harsh environment less, can normal meshing operation.

[0012] When the worm gear reduction gearbox step motor drives the worm to stop rotating, the worm end cannot drive the driving worm end to rotate reversely, that is, the worm and the driving worm realize preliminary self-locking, at this time, the locking push rod is controlled to drive the locking clamp to move forward and be clamped with the locking sleeve, and the positioning block is positioned and inserted into the positioning hole, so that the output shaft is locked, the positioning locking mechanism bears all locking holding forces, avoids the problem that the worm structure bears all locking holding forces and causes damage to the gear teeth of the worm and the worm, and prolongs the service life of the worm gear reduction gearbox step motor. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the reduction gearbox and the step motor driving connection in the utility model;

[0014] Figure 2 It is a structure schematic view of the reduction gearbox and the step motor driving connection in the utility model;

[0015] Figure 3 It is Figure 1 It is a top view structure schematic view of

[0016] Figure 4 It is Figure 3 It is the section structure schematic view of the A-A plane isometric of

[0017] Figure 5The structural diagram of the positioning and locking mechanism and the output shaft in the utility model is shown.

[0018] Figure 6 The internal structure diagram of the utility model as a whole is shown.

[0019] Explanation of reference numerals:

[0020] 1, drive motor; 11, worm support bearing seat;

[0021] 2, drive worm;

[0022] 3, turbine shaft; 31, turbine shaft seat;

[0023] 4, turbine; 5, transmission gear set;

[0024] 6, output shaft; 61, output bearing;

[0025] 7, output gear set;

[0026] 8, locking clamp; 81, positioning block;

[0027] 9, locking push rod;

[0028] 10, locking sleeve; 101, positioning hole;

[0029] 20, reduction gearbox. DETAILED DESCRIPTION

[0030] The embodiments of the utility model are described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0031] Embodiment 1

[0032] Please refer to Figures 1-6The utility model provides the following technical scheme: A worm gear and worm reduction gearbox stepping motor, including drive motor 1 and reduction gearbox 20, drive motor 1 drive end drive connection has drive worm 2, drive worm 2 passes through worm support bearing seat 11 and is installed in the bottom of reduction gearbox 20, drive worm 2 top gear engagement transmission connection has turbine 4, turbine 4 passes through turbine shaft 3 and is installed in the inside of reduction gearbox 20 through turbine shaft seat 31, turbine shaft 3 both ends are installed with transmission gear set 5, reduction gearbox 20 inside is installed with output shaft 6 through output bearing 61, output shaft 6 both ends are installed with transmission gear set 5 gear engagement transmission connection's output gear set 7, the middle part of output shaft 6 is installed with locking ferrule 10, the backboard of reduction gearbox 20 is installed with the positioning locking mechanism for locking output shaft 6, in the embodiment, drive worm 2 is used for positioning and stable support turbine shaft 3 and output shaft 6, thereby increase the impact resistance, and utilize transmission gear set 5 to gear engagement drive output gear set 7, guarantee each stage gear to be impacted less under the influence of bad environment, can normal meshing operation, through positioning locking mechanism to lock output shaft 6, realize the locking force of all bearing through positioning locking mechanism, avoid the problem of worm structure bearing all locking force, cause the damage of worm and worm gear tooth, prolong the service life of worm gear and worm reduction gearbox stepping motor.

[0033] In the embodiment, the positioning locking mechanism includes a locking clamp 8 and a locking push rod 9. The locking push rod 9 is installed on the back plate of the reduction gearbox 20 through an installation plate. The locking clamp 8 is installed on the driving end head of the locking push rod 9. The locking clamp 8 is provided with a positioning block 81. The locking clamp 8 is driven by the locking push rod 9 to be clamped with the locking ferrule 10. The clamping groove of the locking ferrule 10 is provided with a positioning hole 101 for positioning the positioning block 81. After the drive worm 2 stops rotating, the worm gear 4 and the drive worm 2 are preliminarily locked. At this time, the locking push rod 9 is controlled to drive the locking clamp 8 to move forward and be clamped with the locking ferrule 10. The positioning block 81 is positioned in the positioning hole 101, so as to lock the output shaft 6. The positioning locking mechanism realizes the locking force of all bearing. The problem of the worm structure bearing all locking force and causing damage to the worm and the worm gear tooth is avoided, and the service life of the worm gear and worm reduction gearbox stepping motor is prolonged.

[0034] In the embodiment, the locking push rod 9 is a micro electric telescopic rod with a model of WSD50-100.

[0035] In the embodiment, the transmission gear set 5 includes two small transmission gears fixedly installed on the two ends of the turbine shaft 3 respectively, and the output gear set 7 includes two large output gears fixedly installed on the two ends of the output shaft 6 respectively; the large output gears and the small transmission gears are in one-to-one corresponding tooth engagement transmission connection; the impact force on the gears at each stage in a harsh environment is smaller, and the gears at each stage can normally mesh and run, thereby prolonging the service life of the worm gear and worm reduction box stepping motor.

[0036] The working principle and use process of the utility model are as follows: when the utility model is installed, the turbine 4 is stably installed in the reduction box 20 through the turbine shaft 3 and the turbine shaft seat 31, and the output shaft 6 is stably installed in the reduction box 20 through the output bearing 61; the turbine shaft 3 and the output shaft 6 are positioned and stably supported through the reduction box 20, thereby increasing the impact resistance; and the transmission gear set 5 is used to tooth engage and drive the output gear set 7, the impact force on the gears at each stage in a harsh environment is smaller, and the gears at each stage can normally mesh and run, thereby prolonging the service life of the worm gear and worm reduction box stepping motor.

[0037] When the worm gear and worm reduction box stepping motor stops rotating after driving the worm 2, the end of the worm 4 cannot reversely drive the end of the driving worm 2 to rotate, that is, the worm 4 and the driving worm 2 achieve preliminary self-locking, at this time, the control locking push rod 9 is started to drive the locking clamp 8 to move forward and be clamped with the locking sleeve 10, and the positioning block 81 is positioned and inserted into the positioning insertion hole 101, thereby locking the output shaft 6, the positioning and locking mechanism is used to realize the locking holding force of bearing, the problem of damage to the teeth of the worm and the worm caused by the locking holding force of bearing of the worm structure is avoided, and the service life of the worm gear and worm reduction box stepping motor is prolonged.

[0038] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A stepper motor with a worm gear reducer, comprising a drive motor (1) and a reducer (20), wherein the drive end of the drive motor (1) is driven and connected to a drive worm (2), characterized in that: The drive worm (2) is installed at the bottom of the gearbox (20) via the worm support bearing seat (11). A turbine (4) is connected to the drive worm (2) via gear meshing. The turbine (4) is installed inside the gearbox (20) via the turbine shaft (3) and the turbine shaft seat (31). A transmission gear set (5) is installed on both ends of the turbine shaft (3). An output shaft (6) is installed inside the gearbox (20) via the output bearing (61). An output gear set (7) is connected to the transmission gear set (5) via gear meshing on both ends of the output shaft (6). A locking sleeve (10) is installed on the middle part of the output shaft (6). A positioning locking mechanism for locking the output shaft (6) is installed on the back plate inside the gearbox (20).

2. The stepper motor with worm gear reducer according to claim 1, characterized in that: The positioning and locking mechanism includes a locking clip (8) and a locking push rod (9). The locking push rod (9) is mounted on the back plate of the gearbox (20) via a mounting plate. The locking clip (8) is mounted on the driving end of the locking push rod (9). The locking clip (8) is provided with a positioning block (81). The locking clip (8) is driven by the locking push rod (9) to engage with the locking sleeve (10). The locking sleeve (10) has a positioning insertion hole (101) in its slot that engages with the positioning block (81).

3. The worm gear reducer stepper motor according to claim 2, characterized in that: The locking push rod (9) is a miniature electric telescopic rod of model WSD50-100.

4. The stepper motor with worm gear reducer according to claim 1, characterized in that: The transmission gear set (5) includes two small transmission gears that are fixedly installed on both ends of the turbine shaft (3), and the output gear set (7) includes two large output gears that are fixedly installed on both ends of the output shaft (6); the large output gears and the small transmission gears are connected in a one-to-one meshing transmission connection.

Images