CN111825034A

CN111825034A - Safe type crank arm slewer

Info

Publication number: CN111825034A
Application number: CN202010661800.3A
Authority: CN
Inventors: 汪彬; 邰华
Original assignee: Ma'anshan Guangyuan Flange Rings Co ltd
Current assignee: Ma'anshan Guangyuan Flange Rings Co ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-27

Abstract

The invention relates to the technical field of crank arms and discloses a safety crank arm rotating device which comprises a fixed arm, wherein a mounting plate is fixedly connected to the side wall of the left side of the fixed arm, two mounting holes are symmetrically formed in the side wall of the left side of the mounting plate, a driving motor is fixedly connected to the side wall of the upper side of the fixed arm and is located at the position, close to the right end, of the fixed arm, a driving shaft is fixedly connected to an output shaft of the driving motor, a fixing hole is formed in the side wall of the upper side of the fixed arm, the driving shaft penetrates through the fixed arm through the fixing hole, a rotating arm is sleeved outside the driving shaft, a jack is formed in the side wall of the upper side of the rotating arm, the. This safe type crank arm slewer has improved driving motor's life, has improved slewer's life.

Description

Safe type crank arm slewer

Technical Field

The invention relates to the technical field of crank arms, in particular to a safety crank arm slewing device.

Background

The crank arm is a mechanical structure capable of flexibly steering, is flexible to use, can be suitable for complex use environments, is often applied to a plurality of lifting devices, and realizes quick lifting and withdrawing actions of the lifting devices.

The existing outer crank arm rotating structure is driven by a motor, an output shaft of the motor is connected with a crank arm, when the load borne by the crank arm is large, the load borne by the crank arm is completely acted on the motor, the motor is damaged for a long time, the service life of the motor is shortened, sliding friction is frequently generated between two crank arms of the existing rotating device, the abrasion speed is high, and the service life of the rotating device is shortened.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a safe crank arm slewing device which has the advantages of prolonging the service life of a motor of the slewing device, reducing the abrasion speed between crank arms and the like, and solves the problems of service life reduction and higher abrasion speed between crank arms caused by overlarge motor load of the slewing device in the prior art.

(II) technical scheme

The invention provides the following technical scheme: a safety type crank arm rotating device comprises a fixed arm, wherein a mounting plate is fixedly connected to the left side wall of the fixed arm, two mounting holes are symmetrically formed in the left side wall of the mounting plate, a driving motor is fixedly connected to the side wall of the upper side of the fixed arm, the driving motor is located at the position, close to the right end, of the fixed arm, a driving shaft is fixedly connected to the output shaft of the driving motor, a fixing hole is formed in the side wall of the upper side of the fixed arm, the driving shaft penetrates through the fixed arm through the fixing hole, a rotating arm is sleeved outside the driving shaft, a jack is formed in the side wall of the upper side of the rotating arm, the jack is located at the position, close to the left end, of the rotating arm, the driving shaft penetrates through the rotating arm through the jack, the hole wall of the jack is in sliding connection, the utility model discloses a fixing arm, including fixed arm, lateral wall fixedly connected with cardboard on fixed arm right side, the lateral wall fixedly connected with L template of rotor arm upside, the horizontal position of L template is located the top of cardboard, the horizontal lateral wall fixedly connected with pivot of L template, the arc slide opening has been seted up to the lateral wall of cardboard upside, the cardboard is run through the arc slide opening in the pivot, two fixed plates of horizontal lateral wall symmetry fixedly connected with of L template, two same fixed axle of fixedly connected with between the fixed plate, the movable sleeve is equipped with the ball outside the fixed axle, the shaft hole has been seted up to the left lateral wall of ball, the.

Preferably, the lateral wall fixedly connected with sleeve of fixed arm downside, the sleeve movable sleeve is located outside the drive shaft, two ball grooves have been seted up to telescopic lower extreme symmetry, two all the ball inslot rotates and is connected with two universal ball, universal ball stretches out the ball groove.

Preferably, the hole wall of the jack is symmetrically and fixedly connected with two limiting clamping plates, and the shaft wall of the driving shaft is symmetrically provided with two limiting clamping grooves matched with the limiting clamping plates.

Preferably, the lateral wall of fixed arm upside is connected with the protection casing, the protection casing movable sleeve is located outside the drive motor, the outer wall of protection casing passes through first bolt fixedly connected with L type connecting block, L type connecting block passes through second bolt and fixed arm fixed connection.

Preferably, the side wall of the upper side of the rotating arm is provided with an annular rolling groove corresponding to the universal ball, and the universal ball is clamped in the annular rolling groove.

Preferably, two reinforcing ribs are fixedly connected between the mounting plate and the fixing arm.

Preferably, the rotating shaft is sleeved with a limiting nut through an external thread.

(III) advantageous effects

Compared with the prior art, the invention provides a safe crank arm slewing device which has the following beneficial effects:

1. the safe crank arm rotating device is characterized in that when in use, the safe crank arm rotating device comprises a fixed arm, a mounting plate, a mounting hole, a driving motor, a driving shaft, a fixed hole, a rotating arm, a jack, a nut, a clamping plate, an L-shaped plate, a rotating shaft, an arc-shaped sliding hole, a fixed plate, a fixed shaft, a ball and a shaft hole, the driving motor drives the driving shaft to rotate, the driving shaft drives the rotating arm to rotate, the rotating arm drives the L-shaped plate to rotate, the L-shaped plate drives the rotating shaft to rotate, the rotating shaft slides in the arc-shaped sliding hole, the L-shaped plate drives the fixed plate to rotate, the fixed plate drives the balls to roll on the clamping plate, and the balls can support the L-shaped plate, thereby the L-shaped plate can share the load born by the rotating arm, the clamping plate can share the load born by the rotating arm, thereby reduce the down pull-down force of rotor to driving motor, the effectual load that bears of the output shaft that has reduced driving motor has improved driving motor's life.

2. This safe type slewer that cranks arm, through the sleeve that sets up, ball groove and universal ball, during the use, the rotor arm rotates and can drive two universal ball and rotate, makes two universal ball at ball inslot rotation to convert original sliding friction mode into rolling friction, under the same external conditions, rolling friction's frictional resistance is far less than sliding friction's frictional resistance, thereby the wearing and tearing speed of effectual reduction rotor arm and fixed arm, slewer's life has been improved.

Drawings

Fig. 1 is a schematic structural diagram of a safety crank arm swiveling device according to the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 1;

fig. 4 is a partial structure enlarged view of a portion C in fig. 3.

In the figure: the device comprises a fixing arm 1, a mounting plate 2, a mounting hole 3, a driving motor 4, a driving shaft 5, a fixing hole 6, a rotating arm 7, a jack 8, a nut 9, a clamping plate 10, an L-shaped plate 11, a rotating shaft 12, an arc-shaped sliding hole 13, a fixing plate 14, a fixing shaft 15, a ball 16, a shaft hole 17, a sleeve 18, a ball groove 19, a universal ball 20, a limiting clamping plate 21, a limiting clamping groove 22, a protective cover 23, a 24L-shaped connecting block, a 25-shaped annular rolling groove, a 26 reinforcing rib plate and a 27-shaped limiting nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a safety crank arm turning device comprises a fixing arm 1, a mounting plate 2 is fixedly connected to the left side wall of the fixing arm 1, two mounting holes 3 are symmetrically formed in the left side wall of the mounting plate 2, a driving motor 4 is fixedly connected to the upper side wall of the fixing arm 1, the driving motor 4 is located at a position close to the right end of the fixing arm 1, a driving shaft 5 is fixedly connected to an output shaft of the driving motor 4, a fixing hole 6 is formed in the upper side wall of the fixing arm 1, the driving shaft 5 penetrates through the fixing arm 1 through the fixing hole 6, a rotating arm 7 is sleeved outside the driving shaft 5, a jack 8 is formed in the upper side wall of the rotating arm 7, the jack 8 is located at a position close to the left end of the rotating arm 7, the driving shaft 5 penetrates through the rotating arm 7 through the jack, the nut 9 is positioned below the rotating arm 7, a gasket is arranged between the nut 9 and the rotating arm 7, the side wall on the right side of the fixed arm 1 is fixedly connected with a clamping plate 10, the side wall on the upper side of the rotating arm 7 is fixedly connected with an L-shaped plate 11, the horizontal part of the L-shaped plate 11 is positioned above the clamping plate 10, the horizontal side wall of the L-shaped plate 11 is fixedly connected with a rotating shaft 12, the side wall on the upper side of the clamping plate 10 is provided with an arc-shaped sliding hole 13, the rotating shaft 12 penetrates through the clamping plate 10 through the arc-shaped sliding hole 13, the horizontal side wall of the L-shaped plate 11 is symmetrically and fixedly connected with two fixed plates 14, the same fixed shaft 15 is fixedly connected between the two fixed plates 14, the fixed shaft 15 is movably sleeved with a ball 16, the side wall on the left side, rotor arm 7 drives L template 11 and rotates, L template 11 drives pivot 12 and rotates, make pivot 12 slide in arc slide opening 13, L template 11 drives fixed plate 14 and rotates, fixed plate 14 drives ball 16 and rolls on cardboard 10, ball 16 can support L template 11, thereby make L template 11 can share the load that rotor arm 7 bore, make cardboard 10 can share the load that rotor arm 7 bore, thereby reduce rotor arm 7 to driving motor 4's lower pull-down force, the effectual load that the output shaft that has reduced driving motor 4 bore, driving motor 4's life has been improved.

Lateral wall fixedly connected with sleeve 18 of fixed arm 1 downside, sleeve 18 movable sleeve locates outside drive shaft 5, two ball grooves 19 have been seted up to sleeve 18's lower extreme symmetry, all rotate in two ball grooves 19 and be connected with two universal ball 20, universal ball 20 stretches out ball groove 19, during the use, rotor arm 7 rotates and can drive two universal ball 20 rotations, make two universal ball 20 at ball groove 19 internal rotations, thereby convert original sliding friction mode into rolling friction, under the same external conditions, rolling friction's frictional resistance is far less than sliding friction's frictional resistance, thereby effectual reduction rotor arm 7 and fixed arm 1's wearing and tearing speed, slewer's life has been improved.

Two spacing cardboard 21 of jack 8's pore wall symmetry fixedly connected with, the axial wall symmetry of drive shaft 5 seted up two with spacing cardboard 21 assorted spacing draw-in groove 22, mutually support through spacing cardboard 21 and spacing draw-in groove 22, can guarantee that rotor arm 7 follows drive shaft 5 and rotates.

The lateral wall of 1 upside of fixed arm is connected with protection casing 23, and outside driving motor 4 was located to the 23 movable sleeves of protection casing, the outer wall of protection casing 23 passed through first bolt fixedly connected with L type connecting block 24, and L type connecting block 24 passes through second bolt and fixed arm 1 fixed connection, and protection casing 23 can protect driving motor 4.

The side wall of the upper side of the rotating arm 7 is provided with an annular rolling groove 25 corresponding to the universal ball 20, the universal ball 20 is clamped in the annular rolling groove 25, and the stability of the universal ball 20 can be improved by the annular rolling groove 25.

Two reinforcing rib plates 26 are fixedly connected between the mounting plate 2 and the fixed arm 1, and the reinforcing rib plates 26 can improve the connection stability of the mounting plate 2 and the fixed arm 1.

The external thread cover of the rotating shaft 12 is provided with a limit nut 27, and the limit nut 27 can prevent the rotating shaft 12 from being separated from the arc-shaped sliding hole 13.

In summary, in the safety type crank arm slewing device, when in use, the driving motor 4 drives the driving shaft 5 to rotate, the driving shaft 5 drives the rotating arm 7 to rotate, the rotating arm 7 drives the L-shaped plate 11 to rotate, the L-shaped plate 11 drives the rotating shaft 12 to rotate, so that the rotating shaft 12 slides in the arc-shaped sliding hole 13, the L-shaped plate 11 drives the fixing plate 14 to rotate, the fixing plate 14 drives the balls 16 to roll on the clamping plate 10, and the balls 16 can support the L-shaped plate 11, so that the L-shaped plate 11 can share the load borne by the rotating arm 7, the clamping plate 10 can share the load borne by the rotating arm 7, the pull-down force of the rotating arm 7 to the driving motor 4 is reduced, the load borne by the output shaft of the driving motor 4 is effectively reduced, and; during the use, rotor arm 7 rotates and can drive two universal ball 20 rotations, makes two universal ball 20 at ball groove 19 internal rotations to convert original sliding friction mode into rolling friction, under the same external conditions, rolling friction's frictional resistance is far less than sliding friction's frictional resistance, thereby the effectual wearing and tearing speed that reduces rotor arm 7 and fixed arm 1 has improved slewer's life.

It should be noted that the term "comprises/comprising" when used in this specification is taken to specify the presence of stated elements, integers, steps, operations, elements, components, and/or groups thereof, but does not exclude the presence or addition of other elements, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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

1. The utility model provides a safe type turns round arm slewer, includes fixed arm (1), its characterized in that, the left lateral wall fixedly connected with mounting panel (2) of fixed arm (1), two mounting holes (3) have been seted up to the left lateral wall symmetry of mounting panel (2), the lateral wall fixedly connected with driving motor (4) of fixed arm (1) upside, driving motor (4) are located the position that fixed arm (1) is close to the right-hand member, the output shaft fixedly connected with drive shaft (5) of driving motor (4), the lateral wall of fixed arm (1) upside has seted up fixed orifices (6), drive shaft (5) run through fixed arm (1) through fixed orifices (6), the overcoat of drive shaft (5) is equipped with rotor arm (7), jack (8) have been seted up to the lateral wall of rotor arm (7) upside, jack (8) are located rotor arm (7) and are close to the position of left, the driving shaft (5) penetrates through the rotating arm (7) through the jack (8), the hole wall of the jack (8) is in sliding connection with the shaft wall of the driving shaft (5), a nut (9) is sleeved outside the driving shaft (5), the nut (9) is located below the rotating arm (7), a gasket is arranged between the nut (9) and the rotating arm (7), a clamping plate (10) is fixedly connected to the side wall on the right side of the fixing arm (1), an L-shaped plate (11) is fixedly connected to the side wall on the upper side of the rotating arm (7), the horizontal position of the L-shaped plate (11) is located above the clamping plate (10), a rotating shaft (12) is fixedly connected to the horizontal side wall of the L-shaped plate (11), an arc-shaped sliding hole (13) is formed in the side wall on the upper side of the clamping plate (10), the rotating shaft (12) penetrates through the clamping plate (10) through the arc-shaped sliding hole (13), and two fixing, two fixedly connected with is same fixed axle (15) between fixed plate (14), the outer movable sleeve of fixed axle (15) is equipped with ball (16), shaft hole (17) have been seted up to ball (16) left lateral wall, ball (16) are run through shaft hole (17) in fixed axle (15).

2. A safety crank arm turning device according to claim 1, characterized in that: the utility model discloses a fixing arm, including fixed arm (1), drive shaft (5), two ball grooves (19), two all rotate in ball groove (19) and be connected with two universal ball (20), ball groove (19) are stretched out to universal ball (20) and the drive shaft (5) is located to the lateral wall fixedly connected with sleeve (18) of fixed arm (1) downside, outside drive shaft (5) were located to sleeve (18) movable sleeve, two ball groove (19) have been seted up to the lower extreme symmetry of sleeve (18), two all rotate.

3. A safety crank arm turning device according to claim 1, characterized in that: the hole wall of the jack (8) is symmetrically and fixedly connected with two limiting clamping plates (21), and the shaft wall of the driving shaft (5) is symmetrically provided with two limiting clamping grooves (22) matched with the limiting clamping plates (21).

4. A safety crank arm turning device according to claim 1, characterized in that: the lateral wall of fixed arm (1) upside is connected with protection casing (23), outside driving motor (4) were located to protection casing (23) movable sleeve, the outer wall of protection casing (23) passes through first bolt fixedly connected with L type connecting block (24), L type connecting block (24) pass through second bolt and fixed arm (1) fixed connection.

5. A safety crank arm turning device according to claim 2, wherein: the side wall of the upper side of the rotating arm (7) is provided with an annular rolling groove (25) corresponding to the universal ball (20), and the universal ball (20) is clamped in the annular rolling groove (25).

6. A safety crank arm turning device according to claim 1, characterized in that: two reinforcing rib plates (26) are fixedly connected between the mounting plate (2) and the fixed arm (1).

7. A safety crank arm turning device according to claim 1, characterized in that: and a limiting nut (27) is sleeved on the outer thread of the rotating shaft (12).