CN111835141A

CN111835141A - Stroke push rod device

Info

Publication number: CN111835141A
Application number: CN201910297602.0A
Authority: CN
Inventors: 祝晓宇
Original assignee: Derock Linear Actuator Technology Co ltd
Current assignee: Derock Linear Actuator Technology Co ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-10-27

Abstract

The invention relates to a stroke push rod device, which comprises a driving motor, a gear assembly, a switch assembly and a stroke push rod, wherein the gear assembly is arranged on the driving motor; the driving motor is connected with a gear box, the gear assembly is arranged in the gear box, and an output shaft of the driving motor is inserted into the gear box and is in driving connection with the gear assembly; the switch assembly controls the driving motor and is connected with the driving motor, and the switch assembly comprises a switch driving piece capable of rotating and a switch touch piece arranged on the side of the switch driving piece. The stroke push rod comprises a screw rod in driving connection with the gear assembly, and a stroke aluminum pipe is sleeved on the screw rod.

Description

Stroke push rod device

Technical Field

The application relates to a reduction gear, in particular to a stroke push rod device.

Background

The push rod used on the market is generally internally driven integrally by a motor, when the push rod is started, the motor can run at a high speed, and under the condition of high rotating speed, the motor can vibrate seriously due to rotation, so that the metal shell of the motor and a lock screw of the metal shell rub against each other, a large noisy noise or harsh scream is generated in the operation process, the surrounding environment is damaged, the push rod is inconvenient to use indoors, and the practicability of the push rod is poor.

Disclosure of Invention

Based on this, it is necessary to provide a stroke pusher device.

A stroke push rod device comprises a driving motor, a gear assembly, a switch assembly and a stroke push rod;

the driving motor is connected with a gear box, the gear assembly is arranged in the gear box, and an output shaft of the driving motor is inserted into the gear box and is in driving connection with the gear assembly;

the switch assembly controls the driving motor and is connected with the driving motor, and the switch assembly comprises a switch driving piece capable of rotating and a switch touch piece arranged on the side of the switch driving piece.

The stroke push rod comprises a screw rod in driving connection with the gear assembly, and a stroke aluminum pipe is sleeved on the screw rod.

According to the technical requirements, the output shaft of the driving motor is a worm shaft, the gear assembly comprises a helical gear in meshed connection with the worm shaft, a transmission worm is sleeved in a shaft hole of the helical gear, and the transmission worm is in meshed connection with a turbine gear.

According to the technical requirements, the shaft hole sleeve of the turbine gear is provided with an output main shaft.

According to the technical requirements, the output main shaft is connected with the screw rod, and the output main shaft drives the screw rod to rotate.

According to the technical requirements, the screw drives the stroke aluminum pipe to rotate and displace.

According to the technical requirements, an outer aluminum pipe is sleeved outside the screw and the stroke aluminum pipe, and the stroke aluminum pipe extends out of one end face of the outer aluminum pipe from an inner cavity of the outer aluminum pipe.

According to the above technical requirements, the switch driving member comprises a first layer touch lug and a second layer touch lug which are arranged on the upper layer and the lower layer of the switch driving member in a staggered manner, and the switch touch member comprises a first switch contact piece on a first layer touch lug rotation path of the switch driving member and a second switch contact piece on a second layer touch lug rotation path of the switch driving member.

The switch assembly controls the driving motor to drive the switch driving piece to rotate in the positive direction so as to enable the first layer of touch lugs to rotate in the positive direction until the first layer of touch lugs are contacted with the first switch contact piece on the rotating path, and after the first layer of touch lugs are contacted with the first switch contact piece, the first layer of touch lugs are fed back to the driving motor to drive the switch driving piece to rotate in the negative direction until the second layer of touch lugs are contacted with the second switch contact piece and enter a next cycle period; the positive and negative rotation of the driving motor drives the screw rod connected with the output main shaft and the stroke aluminum pipe to reciprocate; the drive power of the drive motor is decelerated and only adjusted from the helical gear and the worm gear, and the reduction gear can be greatly placed, and is specific: the reduction ratio of the bevel gear can be set to be 1:27, the reduction ratio of the worm gear can be set to be 1:37, and the total reduction ratio can be reduced to be 1: 999; the working state of the gear set is simple, and the problems of vibration and noise are greatly improved, so that the running precision, the transmission efficiency and the service life of the gear set are improved.

Drawings

FIG. 1 is a perspective view of a travel pusher apparatus of the present invention;

FIG. 2 is a schematic view of the internal structure of a stroke pushing rod device according to the present invention;

fig. 3 is a schematic diagram of a switch assembly of a stroke pushing device according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the figures, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

One embodiment of the application is that a stroke push rod device comprises a driving motor 1, a gear assembly 2, a switch assembly 3 and a stroke push rod 4;

the driving motor 1 is connected with a gear box 11, the gear assembly 2 is arranged in the gear box 11, and an output shaft 10 of the driving motor 1 is inserted into the gear box 11 and is in driving connection with the gear assembly 2; the output shaft 10 of the driving motor 1 is a worm shaft, the gear assembly 2 comprises a helical gear 21 in meshed connection with the worm shaft, a transmission worm 22 is sleeved in a shaft hole of the helical gear 21, a turbine gear 23 is meshed and connected with the transmission worm 22, and an output main shaft 24 is sleeved in a shaft hole of the turbine gear 23.

Further, the switch assembly 3 is electrically connected with the driving motor 1 and controls the driving motor 1 to rotate forward or backward, the switch assembly 3 includes a switch driving member 31 capable of rotating and a switch touching member 32 disposed on the side of the switch driving member 31; the switch driving member 31 comprises a first layer touch lug 33 and a second layer touch lug 34 which are arranged on the switch driving member 31 in a staggered mode, and the switch touch member 32 comprises a first switch contact 35 and a second switch contact 36 which are respectively arranged on the rotation path of the first layer touch lug 33 and the rotation path of the second layer touch lug 34 of the switch driving member.

Further, the stroke push rod 4 comprises a screw (not shown in the figure) in driving connection with the gear assembly 2, and a stroke aluminum pipe 42 is sleeved on the screw.

Specifically, the output main shaft 24 is connected with a screw, the output main shaft 24 drives the screw to rotate, and the screw drives the stroke aluminum pipe 42 to rotate and displace.

Further, an outer aluminum pipe 43 is sleeved outside the screw and the stroke aluminum pipe 42, and the stroke aluminum pipe 42 extends out of one end face of the outer aluminum pipe 43 from the inner cavity of the outer aluminum pipe 43.

In the above, the switch assembly 3 controls the driving motor 1 to drive the switch driving member 31 to rotate in the positive direction, so that the first layer of touch lugs 33 rotate in the positive direction until the first layer of touch lugs are contacted with the first switch contact 35 on the rotating path, and after the contact, the feedback is given to the driving motor 2 to drive the switch driving member 31 to rotate in the negative direction until the second layer of touch lugs 34 are contacted with the second switch contact 36 and enter the next cycle period of the above actions; the forward and reverse rotation of the driving motor 1 drives the screw rod connected with the output main shaft and the stroke aluminum pipe to reciprocate.

The driving power of the driving motor is reduced and only the bevel gear 21 and the worm gear 23 are adjusted, and the reduction can be greatly enlarged, specifically: the reduction ratio of the helical gear 21 can be set to 1:27, the reduction ratio of the worm gear 23 can be set to 1:37, and the total reduction ratio can be reduced to 1: 999.

Due to the simple structure, the working state is more concise, and the problems of vibration and noise are greatly improved, so that the running precision, the transmission efficiency and the service life of the gear set are improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A stroke push rod device is characterized by comprising a driving motor, a gear assembly, a switch assembly and a stroke push rod;

2. The stroke pushing rod device according to claim 1, wherein the output shaft of the driving motor is a worm shaft, the gear assembly comprises a helical gear meshed with the worm shaft, a shaft hole of the helical gear is sleeved with a transmission worm, and the transmission worm is meshed with the turbine gear.

3. The travel pusher apparatus of claim 1, wherein the shaft bore of the turbine gear is sleeved with an output spindle.

4. The travel pusher apparatus of claim 3, wherein the output spindle is coupled to a screw, the output spindle driving the screw to rotate.

5. The stroke pusher apparatus of claim 4 wherein said screw drives the rotation and displacement of the stroke aluminum tube.

6. The stroke pusher apparatus of claim 5 wherein the screw and stroke aluminum tube are externally sheathed with an outer aluminum tube, the stroke aluminum tube extending from an inner cavity of the outer aluminum tube out of an end face of the outer aluminum tube.

7. The stroke pusher apparatus of claim 1, wherein the switch actuator comprises a first layer of touch tabs and a second layer of touch tabs arranged in a staggered manner on the upper and lower layers of the switch actuator, and the switch contacts comprise a first switch contact in a rotational path of the first layer of touch tabs of the switch actuator and a second switch contact in a rotational path of the second layer of touch tabs of the switch actuator.