CN217849139U - Linear driver with high thrust and hand-cranking function - Google Patents

Abstract

The utility model relates to the technical field of linear drivers, in particular to a high-thrust linear driver with a hand-operated function, which comprises an aluminum alloy hand-operated rear bearing seat, wherein a hand-operated shaft is arranged inside the aluminum alloy hand-operated rear bearing seat, a perforation is arranged on the surface of the hand-operated shaft, and a pin is inserted inside the perforation; the hand shaft is connected with the sleeve and arranged at one end of the hand shaft, the hand shaft is connected with the sleeve and arranged at one end of the screw rod, the rod body of the screw rod is sleeved with the worm wheel and the sliding block, and the surface of the sliding block is provided with the circular tube; the top end of the high-power direct current motor is connected with a worm in a transmission way, the worm is meshed with the worm wheel, and the high-power direct current motor is fixed on the surface of the aluminum alloy lower shell; the beneficial effects are that: the utility model provides a linear driver of big thrust area hand function optimizes current electric putter shortcoming, and big thrust motor is under the outage condition, and the hexagonal axle that usable crank hand motor lead screw stretches out makes the motor normally work, makes equipment such as sick bed be unlikely to use stop because of having a power failure.

Description

Linear driver with high thrust and hand-cranking function

Technical Field

The utility model relates to a linear actuator technical field specifically is a linear actuator of hand function is taken to high thrust.

Background

The electric push rod is also called a linear driver, is a novel linear actuating mechanism mainly composed of a motor push rod, a control device and other mechanisms, and can be considered as an extension of a rotating motor in the aspect of structure.

In the prior art, in the fields of industrial medical home and the like, electric push rods are widely applied, particularly on nursing beds.

However, the traditional electric push rod cannot be normally used under the condition of power failure, so that the nursing bed provided with the electric push rod cannot be normally used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a linear driver of function is shaken in high thrust area to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high thrust with hand crank enabled linear drive, comprising:

the aluminum alloy hand-operated rear bearing block is internally provided with a hand-operated shaft, the surface of the hand-operated shaft is provided with a through hole, and a pin is inserted into the through hole;

the hand crank shaft connecting sleeve is arranged at one end of the hand crank shaft, the hand crank shaft connecting sleeve is arranged at one end of the screw rod, a worm wheel and a sliding block are sleeved on a rod body of the screw rod, and a circular tube is arranged on the surface of the sliding block; and

the top end of the high-power direct current motor is connected with a worm in a transmission mode, the worm is meshed with the worm wheel and is fixed on the surface of the aluminum alloy lower shell.

Preferably, the cover is equipped with hand axle cutting ferrule and hand axle small bearing on the axis body of hand axle, and hand axle cutting ferrule card all is provided with E type jump ring in the draw-in groove has been seted up on the hand rear axle bearing surface of aluminum alloy, the both sides of hand axle small bearing, and E type jump ring cover is established on the axis body of hand axle, and the hand rear axle bearing of aluminum alloy is provided with two, and the hand rear axle bearing of two aluminum alloys passes through bolted connection, and the other end of hand axle exposes in the outside of the hand rear axle bearing of aluminum alloy.

Preferably, a large bearing and a small bearing are sleeved on a shaft body of the screw rod, the worm wheel is located between the large bearing and the small bearing, a middle-shaped groove is formed in one end of the hand rocking shaft connecting sleeve, and one end of the hand rocking shaft and the pin are clamped in the middle-shaped groove.

Preferably, be provided with brake spring between big bearing and the worm wheel, brake spring overlaps and establishes on the axis body of lead screw, and is provided with the inserts that splines between brake spring and the big bearing, and the inserts cover that splines is established on the axis body of lead screw.

Preferably, the upper part of the aluminum alloy lower shell is connected with an aluminum alloy upper shell through a screw, the aluminum alloy upper shell and the aluminum alloy lower shell clamp the guide pipe, the guide pipe is sleeved outside the circular pipe, the end part of the guide pipe is provided with a front end sealing cover, the front end sealing cover is sleeved outside the circular pipe, and the end part of the circular pipe is provided with a front end plug.

Preferably, the surface of the high-power direct current motor is provided with a signal wire, the signal wire is clamped between the plastic lower shell and the plastic upper shell, the plastic lower shell and the plastic upper shell are buckled on the outer side of a shell formed by the aluminum alloy lower shell and the screws from two sides, and the plastic lower shell and the plastic upper shell are fixed through the screws.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a linear driver of big thrust area hand function optimizes current electric putter shortcoming, and big thrust motor is under the outage condition, and the hexagonal axle that usable crank hand motor lead screw stretches out makes the motor normally work, makes equipment such as sick bed be unlikely to use stop because of having a power failure.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the plastic upper shell of the present invention after being removed;

FIG. 3 is a schematic view of the screw rod structure of the present invention;

FIG. 4 is a schematic view of the connection structure of the hand crank shaft and the aluminum alloy hand crank rear bearing block of the present invention;

FIG. 5 is a schematic view of the internal structure of the aluminum alloy hand-operated rear bearing block of the present invention;

FIG. 6 is an exploded view of the hand rocker shaft and pin connection structure of the present invention;

fig. 7 is a schematic view of the connection structure between the high-power dc motor and the aluminum alloy lower shell.

In the figure: 1-hand rocking shaft, 2-pin, 3-aluminum alloy hand-operated rear bearing seat, 4-plastic lower shell, 5-guide pipe, 6-front end sealing cover, 7-round pipe, 8-front end screw plug, 9-plastic upper shell, 10-hand rocking shaft clamping sleeve, 11-hand rocking shaft small bearing, 12-hand rocking shaft connecting sleeve, 13-big bearing, 14-rotation stopping insert, 15-brake spring, 16-worm wheel, 17-small bearing, 18-high power direct current motor, 19-signal wire, 20-aluminum alloy lower shell, 21-screw, 22-lead screw, 23-E type clamp spring, 24-aluminum alloy upper shell and 25-sliding block.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of certain embodiments of the invention and are not to be construed as limiting the scope of the invention, which is defined by the appended claims.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

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, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For simplicity and illustrative purposes, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Referring to fig. 1 to 7, the present invention provides a technical solution: a linear driver with a high thrust and a hand-cranking function comprises an aluminum alloy hand-cranking rear bearing seat 3, a hand-cranking shaft 1 is arranged inside the aluminum alloy hand-cranking rear bearing seat 3, a through hole is formed in the surface of the hand-cranking shaft 1, a pin 2 is inserted into the through hole, a hand-cranking shaft clamping sleeve 10 and a hand-cranking shaft small bearing 11 are sleeved on a shaft body of the hand-cranking shaft 1, the hand-cranking shaft clamping sleeve 10 is clamped in a clamping groove formed in the surface of the aluminum alloy hand-cranking rear bearing seat 3, E-shaped clamping springs 23 are arranged on two sides of the hand-cranking shaft small bearing 11, the E-shaped clamping springs 23 are sleeved on the shaft body of the hand-cranking shaft 1, the aluminum alloy hand-cranking rear bearing seats 3 are arranged in two, the two aluminum alloy hand-cranking rear bearing seats 3 are connected through screws, and the other end of the hand-cranking shaft 1 is exposed outside the aluminum alloy hand-cranking rear bearing seats 3;

the manual rocking shaft connecting sleeve 12 is arranged at one end of the manual rocking shaft 1, the manual rocking shaft connecting sleeve 12 is sleeved at one end of the screw rod 22, a worm wheel 16 and a sliding block 25 are sleeved on a rod body of the screw rod 22, a circular tube 7 is arranged on the surface of the sliding block 25, a large bearing 13 and a small bearing 17 are sleeved on a shaft body of the screw rod 22, the worm wheel 16 is positioned between the large bearing 13 and the small bearing 17, a middle-shaped groove is formed in one end of the manual rocking shaft connecting sleeve 12, one end of the manual rocking shaft 1 and the pin 2 are clamped in the middle-shaped groove, a brake spring 15 is arranged between the large bearing 13 and the worm wheel 16, the brake spring 15 is sleeved on the shaft body of the screw rod 22, a rotation stopping insert 14 is arranged between the brake spring 15 and the large bearing 13, and the rotation stopping insert 14 is sleeved on the shaft body of the screw rod 22;

the transmission of the top end of the high-power direct-current motor 18 is connected with a worm, the worm is meshed with the worm wheel 16, the high-power direct-current motor 18 is fixed on the surface of the aluminum alloy lower shell 20, the upper portion of the aluminum alloy lower shell 20 is connected with an aluminum alloy upper shell 24 through a screw 21, the aluminum alloy upper shell 24 and the aluminum alloy lower shell 20 clamp the guide pipe 5, the guide pipe 5 is sleeved on the outer side of the circular pipe 7, the end portion of the guide pipe 5 is provided with a front-end sealing cover 6, the front-end sealing cover 6 is sleeved on the outer side of the circular pipe 7, the end portion of the circular pipe 7 is provided with a front-end screwed plug 8, the surface of the high-power direct-current motor 18 is provided with a signal wire 19, the signal wire 19 is clamped between the plastic lower shell 4 and the plastic upper shell 9, the plastic lower shell 4 and the plastic upper shell 9 are buckled on the outer side of the shell formed by the aluminum alloy lower shell 20 and the screw 21 from two sides, and the plastic lower shell 4 and the plastic upper shell 9 are fixed through screws.

The aluminum alloy hand-operated rear bearing seat 3 and the front end plug 8 are respectively arranged on a sickbed of a user, and in a power-on state, a worm at the end part of a high-power direct-current motor 18 rotates to drive a worm wheel 16 to rotate, so that a screw rod 22 is driven to rotate, and the sliding block 25 and the circular tube 7 are forced to do reciprocating linear motion along the screw rod 22, so that the motor function is realized; in the power-off state, the crank handle is used for rotating 1 the hand-operated shaft 1, so that the screw rod 22 rotates, the sliding block 25 and the circular tube 7 are forced to do reciprocating linear motion, and the motor is normally used.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a high thrust takes linear actuator of hand function which characterized in that: the high-thrust linear driver with a hand-cranking function comprises:

the hand-operated rear bearing seat is characterized by comprising an aluminum alloy hand-operated rear bearing seat (3), wherein a hand-operated shaft (1) is arranged inside the aluminum alloy hand-operated rear bearing seat (3), a through hole is formed in the surface of the hand-operated shaft (1), and a pin (2) is inserted into the through hole;

the hand crank shaft connecting sleeve (12) is arranged at one end of the hand crank shaft (1), the hand crank shaft connecting sleeve (12) is sleeved at one end of the screw rod (22), a worm wheel (16) and a sliding block (25) are sleeved on a rod body of the screw rod (22), and a circular tube (7) is arranged on the surface of the sliding block (25); and

the top end of the high-power direct current motor (18) is connected with a worm in a transmission mode, the worm is meshed with the worm wheel (16), and the high-power direct current motor (18) is fixed on the surface of the aluminum alloy lower shell (20).

2. The high-thrust linear actuator with a hand-cranking function as claimed in claim 1, wherein: the utility model discloses a manual back bearing frame of aluminum alloy, including hand rocker (1), the axis body of hand rocker (1) is gone up the cover and is equipped with hand rocker cutting ferrule (10) and hand rocker little bearing (11), hand rocker cutting ferrule (10) card is in the draw-in groove has been seted up on aluminum alloy hand back bearing frame (3) surface, the both sides of hand rocker little bearing (11) all are provided with E type jump ring (23), E type jump ring (23) cover is established on the axis body of hand rocker (1), and aluminum alloy hand back bearing frame (3) are provided with two, two hand back bearing frame of aluminum alloy (3) pass through the screw connection, and the other end of hand rocker (1) exposes in the outside of the hand back bearing frame of aluminum alloy (3).

3. The high-thrust linear actuator with a hand-shaking function according to claim 1, wherein: the shaft body of lead screw (22) is gone up the cover and is equipped with big bearing (13) and little bearing (17), and worm wheel (16) are in between big bearing (13) and little bearing (17), and the one end of hand hub connection cover (12) is provided with "well" font groove, and the one end of hand hub connection (1) and pin (2) block in "well" font groove.

4. A high thrust linear actuator with hand crank capability according to claim 3, wherein: be provided with brake spring (15) between big bearing (13) and worm wheel (16), brake spring (15) cover is established on the axis body of lead screw (22), and is provided with between brake spring (15) and big bearing (13) and splines inserts (14), and splines inserts (14) cover and establish on the axis body of lead screw (22).

5. The high-thrust linear actuator with a hand-cranking function as claimed in claim 1, wherein: the aluminum alloy pipe is characterized in that an aluminum alloy upper shell (24) is connected to the upper portion of the aluminum alloy lower shell (20) through a screw (21), the aluminum alloy upper shell (24) and the aluminum alloy lower shell (20) clamp the guide pipe (5), the guide pipe (5) is sleeved on the outer side of the circular pipe (7), the end portion of the guide pipe (5) is provided with a front end sealing cover (6), the front end sealing cover (6) is sleeved on the outer side of the circular pipe (7), and the end portion of the circular pipe (7) is provided with a front end plug (8).

6. The high-thrust linear actuator with a hand-cranking function as claimed in claim 1, wherein: the surface of the high-power direct current motor (18) is provided with a signal wire (19), the signal wire (19) is clamped between the plastic lower shell (4) and the plastic upper shell (9), the plastic lower shell (4) and the plastic upper shell (9) are buckled on the outer side of a shell consisting of the aluminum alloy lower shell (20) and a screw (21) from two sides, and the plastic lower shell (4) and the plastic upper shell (9) are fixed through screws.

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