CN214676453U - Lifting arm fixing mechanism for hydraulic lifter of tractor - Google Patents

Abstract

The utility model provides a lift arm fixed establishment for tractor hydraulic pressure lifting mechanism, which comprises a housin, the inner wall of casing rotates installs a pivot, both ends fixed mounting has the lift arm respectively around the pivot, the upper end of the periphery fixed connection swing arm of pivot, the stiff end of the inner wall one side fixed connection pneumatic cylinder of casing, the square frame of expansion end fixed connection of pneumatic cylinder, first gear is located square frame, one side upper portion of square frame is equipped with the latch, the pneumatic cylinder passes a spring, the periphery fixed mounting second gear of removal axle, the one end of shells inner wall opposite side fixed connection rack, second gear and rack toothing. This device can carry out the automatic fixation function of mobile within range optional position to the lifing arm to in the agricultural implement process of rising and descending, if the oil leak phenomenon appears in the pneumatic cylinder, this device can in time fix the lifing arm, prevents that the agricultural implement from weighing down.

Description

Lifting arm fixing mechanism for hydraulic lifter of tractor

Technical Field

The utility model belongs to the lifting mechanism field, specifically speaking are a lifting arm fixed establishment for tractor hydraulic pressure lifting mechanism.

Background

Tractor raiser drives the agricultural implement and rises and descend and all realize through the pneumatic cylinder, but if the agricultural implement is in the in-process that rises or descend, if the oil leak phenomenon appears in the pneumatic cylinder, then can lead to the agricultural implement to drop suddenly, and then produce the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lifting arm fixed establishment for tractor hydraulic pressure lifting mechanism for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

the utility model provides a lifting arm fixed establishment for tractor hydraulic pressure lifting mechanism, which comprises a housin, the inner wall of casing rotates installs a pivot, both ends difference fixed mounting has the lifting arm around the pivot, the upper end of the periphery fixed connection swing arm of pivot, the stiff end of the inner wall one side fixed connection pneumatic cylinder of casing, fore-and-aft penetrating groove has been seted up in front of the swing arm, it can follow gliding worker shape piece to be equipped with one in the penetrating groove, be equipped with a fore-and-aft removal axle in the casing, the removal axle runs through worker shape piece and is connected with its bearing, first gear is installed through one-way bearing in the periphery of removal axle, the expansion end fixed connection square frame of pneumatic cylinder, first gear is located square frame, one side upper portion of square frame is equipped with the latch, the pneumatic cylinder passes a spring, the periphery fixed mounting second gear of removal axle, the one end of shells inner wall opposite side fixed connection rack, second gear and rack toothing.

According to the lifting arm fixing mechanism for the hydraulic lifter of the tractor, the bottom surface of the rack is fixedly connected with the top surface of the connecting plate, and the bottom surface of the connecting plate is fixedly connected with the bottom surface of the inner wall of the shell.

According to the lifting arm fixing mechanism for the hydraulic lifter of the tractor, the top surface of the outer wall of the shell is provided with the maintenance opening.

According to the lifting arm fixing mechanism for the hydraulic lifter of the tractor, the maintenance port is hinged with the sealing door.

According to the lifting arm fixing mechanism for the hydraulic lifter of the tractor, the handle is fixedly arranged on the bottom surface of the sealing door.

According to the lifting arm fixing mechanism for the hydraulic lifter of the tractor, the periphery of the handle is provided with the anti-skid grains.

The utility model has the advantages that: the user fixedly installs the farm tool on the lifting arm, the user controls the hydraulic cylinder to extend, the hydraulic cylinder extension can push the moving shaft to move rightwards through the square frame and the first gear, at the moment, the first gear is meshed with the latch on the square frame, so that the first gear cannot rotate, the moving shaft can only rotate clockwise due to the one-way bearing, the moving shaft moves rightwards to drive the second gear to move rightwards and enable the second gear to rotate clockwise, so that the moving shaft rotates clockwise, the moving shaft moves rightwards to drive the swing arm to rotate anticlockwise through the I-shaped block and the trough, so that the lifting arm can be driven to rotate anticlockwise through the rotating shaft, so that the farm tool can be lifted, if the hydraulic cylinder occurs in the process of raising the farm tool, the farm tool can give a force to move leftwards to the moving shaft under the action of gravity, but at the moment, the moving shaft can only rotate clockwise, and then the second gear can not rotate anticlockwise, therefore the second gear can not move leftwards, and the moving shaft can not move leftwards, and further the farm tool can not fall down, the user controls the hydraulic cylinder to contract, the hydraulic cylinder drives the square frame to move leftwards, so that the first gear is separated from the latch on the square frame, and further the moving shaft can rotate anticlockwise, and further the farm tool can fall down, if the hydraulic cylinder has oil leakage phenomenon in the process of falling the farm tool, the square frame receives the right elastic force of the spring, the gravity of the farm tool gives the first gear the force of moving leftwards, and further the first gear is clamped with the latch on the square frame, and further the farm tool can not fall down, compared with the prior art, the device can automatically fix the lifting arm at any position in the movable range, and in the process of rising and falling the farm tool, if the oil leakage phenomenon occurs in the hydraulic cylinder, this device can in time fix the lifing arm, prevents that the agricultural implement from weighing down.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A lifting arm fixing mechanism for a hydraulic lifter of a tractor comprises a shell 1, wherein a rotating shaft 2 is rotatably arranged on the inner wall of the shell 1, lifting arms 3 are respectively fixedly arranged at the front end and the rear end of the rotating shaft 2, the periphery of the rotating shaft 2 is fixedly connected with the upper end of a swing arm 4, the fixed end of a hydraulic cylinder 5 is fixedly connected with one side of the inner wall of the shell 1, a longitudinal through groove 6 is formed in the front of the swing arm 4, an I-shaped block 7 capable of sliding along the through groove is arranged in the through groove 6, a longitudinal moving shaft 8 is arranged in the shell 1, the moving shaft 8 penetrates through the I-shaped block 7 and is connected with a bearing of the I-shaped block, a first gear 9 is arranged on the periphery of the moving shaft 8 through a one-way bearing, the moving shaft 8 only can clockwise rotate relative to the first gear 9, the movable end of the hydraulic cylinder 5 is fixedly connected with a square frame 10, the first gear 9 is positioned in the square frame 10, a latch is arranged on the upper part of one side of the square frame 10, the latch is located the left side of square frame 10, and the latch can mesh with first gear 9, and pneumatic cylinder 5 passes a spring 11, and spring 11 is in compression state all the time, and the one end and the 1 inner wall contact of casing of spring 11, the other end and the square frame 10 contact of spring 11 move the periphery fixed mounting second gear 12 of axle 8, the one end of 1 inner wall opposite side fixed connection rack 13 of casing, second gear 12 and the meshing of rack 13. A user fixedly installs the farm tool on the lifting arm 3, the user controls the hydraulic cylinder 5 to extend, the hydraulic cylinder 5 extends to push the moving shaft 8 to move rightwards through the square frame 10 and the first gear 9, at the moment, the first gear 9 is meshed with the latch on the square frame 10, so that the first gear 9 cannot rotate, the moving shaft 8 can only rotate clockwise due to the one-way bearing, the moving shaft 8 moves rightwards to drive the second gear 12 to move rightwards and enable the second gear 12 to rotate clockwise, so that the moving shaft 8 rotates clockwise, the moving shaft 8 moves rightwards to drive the swing arm 4 to rotate anticlockwise through the I-shaped block 7 and the through groove 6, so that the lifting arm 3 can be driven to rotate anticlockwise through the rotating shaft 2, so that the farm tool can be lifted, if the hydraulic cylinder 5 appears in the process of lifting of the farm tool, the farm tool is under the action of gravity, the force which can move the moving shaft 8 leftward can be given, but at the moment, the moving shaft 8 can only rotate clockwise, so that the second gear 12 can not rotate counterclockwise, so that the second gear 12 can not move leftward, the moving shaft 8 can not move leftward, and further the farm implement can not fall down, the user controls the hydraulic cylinder 5 to contract, the hydraulic cylinder 5 drives the square frame 10 to move leftward, so that the first gear 9 is separated from the latch on the square frame 10, so that the moving shaft 8 can rotate counterclockwise, and further the farm implement can fall down, if the hydraulic cylinder 5 leaks oil during the descending process of the farm implement, the square frame 10 receives the right elastic force of the spring 11, the gravity of the farm implement gives the force which moves leftward to the first gear 9, so that the first gear 9 is clamped with the latch on the square frame 10, and further the farm implement can not fall down, compared with the prior art, this device can carry out the automatic fixation function of mobile within range optional position to lifting arm 3 to in the agricultural implement process of rising and descending, if the oil leak phenomenon appears in pneumatic cylinder 5, this device can in time fix the lifting arm, prevents that the agricultural implement from weighing down.

Specifically, as shown in fig. 1, the bottom surface of the rack 13 according to the present embodiment is fixedly connected to the top surface of the connecting plate 14, and the bottom surface of the connecting plate 14 is fixedly connected to the bottom surface of the inner wall of the housing 1. The connecting plate 14 can play a role in supporting and reinforcing the rack 13, and prevent the rack 13 from bending and deforming.

Specifically, as shown in fig. 1, a maintenance opening 15 is formed in the top surface of the outer wall of the housing 1 according to the embodiment. The user can service the device through the service opening 15.

Further, as shown in fig. 1, a sealing door 16 is hinged at the service opening 15 according to the embodiment. Sealing door 16 can shelter from with maintenance opening 15, prevents that impurity such as dust in the air from getting into casing 1 in, avoids influencing the normal operating of this device.

Further, as shown in fig. 1, a handle 17 is fixedly installed on the bottom surface of the sealing door 16 according to the present embodiment. The handle 17 can provide a force point for a user, so that the user can open the sealing door 16 conveniently, and the use is more convenient.

Furthermore, as shown in fig. 1, the handle 17 of the present embodiment is provided with anti-slip threads on the outer periphery. The anti-slip threads can increase the friction between the user's hand and the handle 17, preventing the user's hand from slipping.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. The utility model provides a lift arm fixed establishment for tractor hydraulic pressure lifting mechanism, includes casing (1), and the inner wall of casing (1) rotates and installs a pivot (2), and both ends fixed mounting respectively has lift arm (3) around pivot (2), the upper end of the periphery fixed connection swing arm (4) of pivot (2), the stiff end of inner wall one side fixed connection pneumatic cylinder (5) of casing (1), its characterized in that: fore-and-aft groove (6) that pass through has been seted up in the front of swing arm (4), it can follow gliding worker-shaped block (7) to be equipped with one in groove (6), be equipped with a fore-and-aft removal axle (8) in casing (1), removal axle (8) run through worker-shaped block (7) and bearing connection with it, first gear (9) are installed through one-way bearing to the periphery of removal axle (8), expansion end fixed connection square frame (10) of pneumatic cylinder (5), first gear (9) are located square frame (10), one side upper portion of square frame (10) is equipped with the latch, a spring (11) is passed in pneumatic cylinder (5), the periphery fixed mounting second gear (12) of removal axle (8), the one end of casing (1) inner wall opposite side fixed connection rack (13), second gear (12) and rack (13) meshing.

2. A lift arm securing mechanism for a tractor hydraulic lifter according to claim 1 wherein: the bottom surface of the rack (13) is fixedly connected with the top surface of the connecting plate (14), and the bottom surface of the connecting plate (14) is fixedly connected with the bottom surface of the inner wall of the shell (1).

3. A lift arm securing mechanism for a tractor hydraulic lifter according to claim 1 wherein: and a maintenance opening (15) is formed in the top surface of the outer wall of the shell (1).

4. A lift arm securing mechanism for a tractor hydraulic lifter according to claim 3 wherein: and a sealing door (16) is hinged at the maintenance opening (15).

5. The lift arm securing mechanism for a tractor hydraulic lifter of claim 4 wherein: and a handle (17) is fixedly arranged on the bottom surface of the sealing door (16).

6. The lift arm securing mechanism for a tractor hydraulic lifter of claim 5 wherein: the periphery of the handle (17) is provided with anti-skid grains.

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