Arc gear lead screw manual transmission mechanism

Abstract

The utility model discloses a transmission mechanism, belongs to the technical field of actuator manual driving, and particularly relates to an arc gear lead screw manual transmission mechanism which comprises a welding box body, a power input mechanism is arranged on one side of the welding box body, and the power input mechanism extends into the welding box body. The size of the connecting flange in the welding box body can be adjusted according to different series of actuators, and accessories are flexible. An arc gear transmission mechanism is arranged in the welding box body, and the arc gear transmission mechanism achieves the functions of steering and torque amplification. A lead screw transmission mechanism is arranged at the tail end of the arc gear transmission mechanism, and the lead screw transmission mechanism achieves the functions of preventing rotation and only moving forwards. The power input mechanism drives the arc gear rotating mechanism to rotate, the arc gear rotating mechanism drives the lead screw transmission mechanism to move forwards, finally power is output, and the arc gear transmission mechanism is flexible in accessory, simple in structure and convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model discloses a transmission mechanism belongs to actuator manual drive technical field, concretely relates to a kind of arc gear screw rod manual transmission mechanism. BACKGROUND

[0002] The driving device of actuator is generally manually driven, but the input torque provided by manual drive is limited, and if the thrust of actuator is large, the input torque needs to be amplified by manual device.

[0003] Although the existing manual transmission structure realizes the functions of steering and amplifying torque, it cannot prevent the rotation of the screw rod. In order to realize the forward movement of the screw rod, an anti-rotation device needs to be designed and installed in the actuator. UTILITY MODEL CONTENTS

[0004] The utility model discloses an arc gear screw rod manual transmission mechanism, which solves the problem of the existing manual transmission structure mentioned above. Since the anti-rotation device is installed in the actuator, it needs to be designed separately, which is complex and inconvenient to install.

[0005] Technical scheme: An arc gear screw rod manual transmission mechanism comprises a welded box, a power input mechanism is arranged on one side of the welded box, the power input mechanism extends into the welded box, and the power input mechanism is used to provide power for the manual transmission mechanism.

[0006] In a further embodiment, an arc gear transmission mechanism and a screw rod transmission mechanism are arranged in the welded box. The arc gear transmission mechanism is the first-stage transmission of the manual transmission mechanism, and the screw rod transmission mechanism is the second-stage transmission of the manual transmission mechanism. The screw rod transmission mechanism is installed at the end of the arc gear transmission mechanism, and power is output through the screw rod transmission mechanism.

[0007] One end of the welded box is provided with a box cover, and the box cover encloses the manual transmission mechanism.

[0008] In a further embodiment, the welded box is provided with a connecting flange, and the connecting flange can be replaced according to different series of actuators.

[0009] In a further embodiment, the power input mechanism comprises a hand wheel disc, a pinion shaft and an arc pinion.

[0010] The hand wheel disc is connected to one end of the pinion shaft, and the arc pinion is connected to the other end of the pinion shaft.

[0011] The hand wheel disc is used to provide input torque, the pinion shaft is used to transmit torque, the hand wheel disc and the arc pinion shaft are fixedly connected through a flat washer and a bolt, the pinion shaft and the arc pinion are fixedly connected through a first flat key, and a check ring is arranged to prevent the pinion from falling off.

[0012] The input torque of the hand wheel disc of the power input mechanism is transmitted to the arc gear transmission mechanism through the arc pinion at the tail end.

[0013] In a further embodiment, the power input mechanism is fixed on the welded box body through a first bearing and a second bearing, and an outer end is provided with a shaft seal for dustproof sealing, the first bearing bears axial thrust, and the second bearing is used for supporting action.

[0014] In a further embodiment, the arc gear transmission mechanism comprises an arc gear, the arc pinion and the arc gear are meshingly connected to provide steering and speed reduction for the manual transmission structure, and convert the rotary motion input by the power input mechanism into linear motion to provide linear stroke for the actuator.

[0015] In a further embodiment, the screw rod transmission mechanism comprises a screw rod, a nut, a nut sleeve, a guide key and a nut cover.

[0016] The screw rod and the nut are meshingly connected through trapezoidal threads, the nut is provided with a nut sleeve on the outside, the inner surface of the nut sleeve is internally threaded, the outer surface of the nut is externally threaded, the nut and the nut sleeve are threadedly connected to make the nut and the nut sleeve into a whole, the guide key is fixed on the welded box body through a first screw, the nut sleeve has a key groove, the guide key slides on the key groove of the nut sleeve to prevent the nut and the nut sleeve from rotating, the nut cover is provided with external threads on the outer surface, the nut cover and the nut sleeve are threadedly connected, and when the right surface of the nut cover contacts the screw rod, the nut sleeve is limited to continue moving to the right for limiting.

[0017] In a further embodiment, the screw rod serves as a support shaft of the arc gear, and the screw rod and the arc gear are fixedly connected through a second flat key.

[0018] The third bearing and the fourth bearing are arranged between the screw rod and the box cover, the fourth bearing is used for supporting the screw rod, and the third bearing bears axial thrust.

[0019] In a further embodiment, the box cover is fixed on the welded box body through a second screw.

[0020] Beneficial effects: the utility model discloses a side of the box body is provided with power input mechanism, and power input mechanism is inserted into the welding box body, and the connecting flange in the welding box body can be adjusted size according to different series of actuator, and the accessory is flexible. The arc gear transmission mechanism is arranged in the welding box body, and the arc gear transmission mechanism realizes the function of steering and amplifying torque. The end of the arc gear transmission mechanism is provided with the screw rod transmission mechanism, and the screw rod transmission mechanism realizes the function of preventing rotation and only moving forward. The power input mechanism drives the arc gear rotation mechanism to rotate, and the arc gear rotation mechanism drives the screw rod transmission mechanism to move forward, and finally exports power, and the utility model discloses the accessory is flexible, simple structure, convenient installation. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is whole structure schematic diagram of an embodiment of the utility model.

[0022] Figure 2 It is structure schematic diagram of power input mechanism of an embodiment of the utility model.

[0023] Figure 3 It is structure schematic diagram of arc gear transmission mechanism of an embodiment of the utility model.

[0024] Figure 4 It is structure schematic diagram of screw rod transmission mechanism of an embodiment of the utility model.

[0025] Figure 5 It is structure schematic diagram of welding box body of an embodiment of the utility model.

[0026] Reference signs: 1, welding box body;2, power input mechanism;3, arc gear transmission mechanism;4, screw rod transmission mechanism;5, box cover;6, arc pinion;7, baffle ring;8, first flat key;9, pinion shaft;10, first bearing;11, second bearing;12, shaft seal;13, flat pad;14, bolt;15, hand wheel disc;16, arc gear wheel;17, screw rod;18, nut;19, nut cover;20, guide key;21, first screw;22, nut cover;23, third bearing;24, fourth bearing;25, second screw;26, second flat key. DETAILED DESCRIPTION

[0027] The technical scheme of the utility model will be described below in connection with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] A manual transmission mechanism for an arc gear screw includes: a welded housing, a power input mechanism 2, an arc gear transmission mechanism 3, a screw transmission mechanism 4, and a housing cover 5.

[0031] Example 1:

[0032] like Figure 1 As shown, a power input mechanism 2 is provided on one side of the welding box 1. The power input mechanism 2 extends into the welding box 1 and is used to provide power to the transmission structure. The arc gear transmission mechanism 3 is the first stage of the transmission structure, and the lead screw transmission mechanism 4 is the second stage of the transmission structure. The lead screw transmission mechanism 4 is located at the end of the arc gear transmission mechanism 3, and power is output through the lead screw transmission mechanism 4. The transmission structure is closed by the box cover 5.

[0033] In one embodiment, the connecting flange in the welded housing 1 of the transmission structure can be replaced according to different series of actuators, making the accessories more flexible. The left end of the welded housing 1 extends into the cylinder of the actuator, shortening the transmission chain and thus reducing the overall size of the actuator with a manual transmission structure.

[0034] In one embodiment, the cover 5 is fixed to the welded housing 1 by the second screw 25, so that the arc gear is completely enclosed inside the welded housing 1, thereby preventing dust and making it safer.

[0035] In one embodiment, the welding box structure 5, the steel pipe is a standard steel pipe, easy to purchase, control the cost. Transition flange can be replaced according to the actuator cylinder, flexible accessories. The length of the stroke can be adjusted by adjusting the length of the left steel pipe. The size of the arc gear can adjust the size of the right steel pipe to adapt. The accessories in the welding box 1 are flexibly adjusted according to the stroke and the size of the arc gear, and are welded and fixed between each other, which greatly reduces the cost.

[0036] Embodiment 2:

[0037] As shown in Figures 2 to 5 , the power input mechanism 2 includes a hand wheel disc 15, rotating the hand wheel disc 15, providing input torque, the pinion shaft 9 is used to transmit torque, the hand wheel disc 15 and the pinion shaft 9 are connected and fixed by the flat washer 13 and the bolt 14. The pinion shaft 9 and the arc pinion 6 are fixed by the first flat key 8, and the retaining ring 7 is added to prevent the arc pinion 6 from falling off. The input torque of the initial end hand wheel disc 15 of the power input mechanism 2 is finally transmitted to the arc gear 16 in the arc gear transmission mechanism 3 through the terminal arc pinion 6.

[0038] In one embodiment, the power input mechanism 2 is fixed on the welding box through the first bearing 10 and the second bearing 11, and the shaft seal 12 is added at the outer end, which plays a sealing and dustproof role. The first bearing 10 bears the axial thrust, and the second bearing 11 plays a supporting role.

[0039] Embodiment 3:

[0040] As shown in Figures 2 to 5 , the arc gear transmission mechanism 3 includes an arc gear size gear, the arc pinion 6 and the arc gear 16 are connected by gear meshing, so as to realize the functions of steering and speed reduction of the transmission structure, and convert the rotary motion input by the power input mechanism 2 into linear motion, so as to provide a linear stroke for the actuator. The transmission ratio of the arc gear transmission mechanism 3 can adjust the parameters of the arc gear, that is, adjust the tooth number ratio of the arc pinion 6 and the arc gear 16, so as to meet the demand of more thrust.

[0041] Embodiment 4:

[0042] As shown in Figures 2 to 5As shown, the screw rod transmission mechanism 4 includes a screw rod 17 and a nut 18, which are engaged through trapezoidal threads. The nut sleeve 19 has internal threads on its inner surface, and the nut 18 has external threads on its outer surface. The nut 18 and the nut sleeve 19 are connected through the threads, so that the nut 18 and the nut sleeve 19 become an integral whole. The guide key 20 is fixed on the welded box body 1 through the first screw 21. The nut sleeve 19 has a key groove, and the guide key 20 slides on the key groove of the nut sleeve 19, so as to prevent the nut 18 and the nut sleeve 19 from rotating. The nut cover 22 has external threads on its outer surface, and the nut cover 22 and the nut sleeve 19 are connected through the threads. When the right surface of the nut cover 22 contacts the screw rod 17, the movement of the nut sleeve 19 to the right is limited, so as to achieve limiting.

[0043] The screw rod 17 also serves as a support shaft of the arc gear 16, and the screw rod 17 and the arc gear 16 are combined into one, so as to simplify the structure, save space, and save cost. The screw rod 17 and the arc gear 16 are connected and fixed through the second flat key 26. The fourth bearing 24 supports the screw rod 17, and the third bearing 23 bears the axial thrust.

[0044] Working principle: The power input mechanism extends into the welded box body. The transition flange in the welded box body can be adjusted in size according to different series of actuators, and the accessories are flexible. The arc gear transmission mechanism is arranged in the welded box body, and the arc gear transmission mechanism realizes the functions of turning and amplifying torque. The end of the arc gear transmission mechanism is provided with the screw rod transmission mechanism, and the screw rod transmission mechanism realizes the function of preventing rotation and moving forward only. The power input mechanism drives the arc gear rotation mechanism to rotate, the arc gear rotation mechanism drives the screw rod transmission mechanism to move forward, and finally the power is output.

[0045] Obviously, the above embodiments are only examples for clearly illustrating, but not limiting the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. A spiral bevel gear lead screw hand drive mechanism characterized by, The manual transmission mechanism comprises a welded box body, one side of which is provided with a power input mechanism extending into the welded box body, which is used to provide power for the manual transmission mechanism; An arc gear transmission mechanism and a screw rod transmission mechanism are arranged in the welded box body, the arc gear transmission mechanism is the first stage transmission of the manual transmission mechanism, and the screw rod transmission mechanism is the second stage transmission of the manual transmission mechanism, the screw rod transmission mechanism is installed at the end of the arc gear transmission mechanism, and power is output through the screw rod transmission mechanism; One end of the welded box body is provided with a box cover, which seals the manual transmission mechanism.

2. The spiral bevel gear lead screw manual transmission mechanism according to claim 1, wherein The welded box body is provided with a connecting flange, which can be replaced according to different series of actuators.

3. The spiral bevel gear lead screw manual transmission mechanism of claim 1, wherein, The power input mechanism comprises a hand wheel disc, a pinion shaft and an arc pinion; The hand wheel disc is connected with one end of the pinion shaft, and the arc pinion is connected with the other end of the pinion shaft; The hand wheel disc is used to provide input torque, the pinion shaft is used to transmit torque, the hand wheel disc and the pinion shaft are fixedly connected through a flat pad and a bolt, the pinion shaft and the arc pinion are fixedly connected through a first flat key, and a retaining ring is arranged to prevent the arc pinion from falling off; The input torque of the hand wheel disc of the power input mechanism is transmitted to the arc gear transmission mechanism through the arc pinion at the end.

4. The spiral bevel gear lead screw manual transmission mechanism of claim 1, wherein, In the power input mechanism, a first bearing and a second bearing are fixed on the welded box body, and an outer end is provided with a shaft seal for dust sealing, the first bearing bears axial thrust, and the second bearing is used for supporting action.

5. The spiral bevel gear lead screw manual transmission mechanism of claim 3, wherein, The arc gear transmission mechanism comprises an arc gear, the arc pinion and the arc gear are meshed and connected, which provides steering and speed reduction for the manual transmission structure, converts the rotary motion input by the power input mechanism into linear motion, and provides linear stroke for the actuator.

6. The spiral bevel gear lead screw manual transmission mechanism of claim 5, wherein, The screw rod transmission mechanism comprises a screw rod, a nut, a nut sleeve, a guide key and a nut cover; The screw rod and the nut are meshed and connected through trapezoidal threads, the outer side of the nut is provided with a nut sleeve, the inner surface of the nut sleeve has internal threads, the outer surface of the nut has external threads, the nut and the nut sleeve are threadedly connected to make the nut and the nut sleeve an integral whole, the guide key is fixed on the welded box body through a first screw, the nut sleeve has a key groove, the guide key slides on the key groove of the nut sleeve to prevent the nut and the nut sleeve from rotating, the outer surface of the nut cover is provided with external threads, the nut cover and the nut sleeve are threadedly connected, and when the right surface of the nut cover contacts the screw rod, the nut sleeve is limited to continue moving to the right for limiting.

7. The spiral bevel gear lead screw manual transmission mechanism of claim 6, wherein, The screw rod serves as a support shaft of the arc gear, and the screw rod and the arc gear are fixedly connected through a second flat key; Third and fourth bearings are arranged between the screw rod and the box cover, the fourth bearing is used to support the screw rod, and the third bearing bears axial thrust.

8. The spiral bevel gear lead screw manual transmission mechanism of claim 6, wherein, The box cover is fixed on the welded box body through a second screw.

Images