CN215290326U

CN215290326U - Land leveler

Info

Publication number: CN215290326U
Application number: CN202120197793.6U
Authority: CN
Inventors: 程广森
Original assignee: Yucheng Yatai Machinery Manufacturing Co ltd
Current assignee: Yucheng Yatai Machinery Manufacturing Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-12-24
Anticipated expiration: 2031-01-25

Abstract

The utility model discloses a land leveler, the link, the upper bracket, the lower carriage, upper and lower support coupling assembling, altitude mixture control actuating mechanism and horizontal adjustment mechanism, the upper bracket can rotate from top to bottom with the link and be connected, upper and lower support coupling assembling's upper end tilting is connected on the upper bracket, upper and lower support coupling assembling's lower extreme can rotate from top to bottom and control the rotation and be connected on the lower carriage, the lower carriage can rotate from top to bottom with the link and control the rotation and be connected, the link, the upper bracket, lower carriage and upper and lower support coupling assembling connect into first parallelogram, altitude mixture control actuating mechanism is used for driving the relative link of upper bracket tilting, level land shovel sets up the downside at the rear end of lower carriage, horizontal adjustment mechanism is used for driving the relative upper bracket left and right rotation of lower carriage. The utility model discloses can adjust the height and the levelness of flat ground shovel at flat ground in-process for the ground planarization that forms after the operation is accomplished is good.

Description

Land leveler

Technical Field

The utility model relates to a land leveler.

Background

The land leveler is used for leveling paddy fields, and because the hard bottom layer of the paddy field is uneven, the wheel sinking depth of the tractor used for driving the land leveler is inconsistent, the height of a land leveling shovel of the land leveler hung on the tractor relative to the plough layer of the paddy field can be changed, and the state that one end is high and the other end is not horizontal can be easily generated by the land leveling shovel.

Chinese patent CN103583101A discloses a leveling shovel elevation adjustment mechanism of a paddy field laser grader, which comprises: the device comprises a flat ground shovel blade, a flat ground shovel rotating frame, a suspension mounting frame, synchronous parallel rods, a synchronous moving frame, a height oil cylinder support, a height oil cylinder and a receiver mounting rod. The suspension mounting frame, the land leveling shovel rotating frame, the synchronous moving frame and the synchronous parallel rod form a parallelogram mechanism.

The invention adjusts the height of the flat ground shovel blade by controlling the deformation of the parallelogram mechanism, but can not adjust the levelness of the flat ground shovel blade.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: a land leveler is provided that can adjust both the height and the levelness of a land leveling blade.

In order to solve the technical problem, the utility model discloses a flat ground shovel, the link, the upper bracket, the lower carriage, upper and lower support coupling assembling, altitude mixture control actuating mechanism and horizontal adjustment mechanism, the upper bracket can rotate from top to bottom with the link and be connected, upper and lower support coupling assembling's upper end tilting is connected on the upper bracket, upper and lower support coupling assembling's lower extreme can rotate from top to bottom and control the rotation and be connected on the lower carriage, the lower carriage can rotate from top to bottom with the link and control the rotation and be connected, the link, the upper bracket, lower carriage and upper and lower support coupling assembling connect into first parallelogram, altitude mixture control actuating mechanism is used for driving upper bracket relative link tilting, the downside of flat ground shovel setting at the rear end of lower carriage, horizontal adjustment mechanism is used for driving the lower carriage relative upper bracket tilting.

In order to facilitate assembly, the middle part of the front end of the lower support is connected with the connecting frame through a first universal joint, the lower end of the upper support connecting assembly and the lower support are connected with the lower support through a second universal joint, and the front end of the upper support is rotatably connected with the connecting frame through a pin shaft.

For the convenience of control, the height adjusting driving mechanism is an upper support lifting oil cylinder, and two ends of the upper support lifting oil cylinder are respectively hinged with the connecting frame and the upper support.

In order to adjust the levelness of the land leveling shovel conveniently, the horizontal adjusting mechanism comprises two crank arms and two upper and lower support adjusting pull rods, corners of the two crank arms are hinged to the left side and the right side of the upper support respectively, one ends of the two crank arms are hinged to the left side and the right side of the lower support respectively through the upper and lower support adjusting pull rods, a second parallelogram is formed by connecting points between the two crank arms, the two upper and lower support adjusting pull rods and the lower support, the other ends of the two crank arms are connected through left and right balance connecting rods, the two crank arms are hinged to the left and right balance connecting rods, a third parallelogram is formed by connecting points between the two crank arms, the left and right balance connecting rods and the upper support, and a crank arm driving mechanism for driving the crank arms to rotate relative to the upper support is connected between one of the crank arms and the upper support.

In order to control the rotation of the crank arm, the crank arm driving mechanism is a lower support swing driving oil cylinder or an electric push rod, and two ends of the crank arm driving mechanism are respectively hinged with the crank arm and the upper support.

In order to facilitate installation, a support is fixed on the upper support, and the crank arm driving mechanism is hinged with the support.

In order to adjust the levelness of the land leveling shovel conveniently, the horizontal adjusting mechanism comprises two crank arms and two upper and lower support adjusting pull rods, corners of the two crank arms are hinged to the left side and the right side of the upper support respectively, one ends of the two crank arms are hinged to the left side and the right side of the lower support respectively through the upper and lower support adjusting pull rods, a second parallelogram is formed by connecting points between the two crank arms, the two upper and lower support adjusting pull rods and the lower support, the other ends of the two crank arms are connected through a double-extension-rod lower-support swinging driving oil cylinder, the two crank arms are hinged to two ends of the double-extension-rod lower-support swinging driving oil cylinder respectively, a third parallelogram is formed by the connecting points between the two crank arms, the double-extension-rod lower-support swinging driving oil cylinder and the upper support, and a cylinder body of the double-extension-rod lower-support swinging driving oil cylinder is connected with the upper support in an up-down sliding mode through a connecting seat.

In order to realize automatic height adjustment, the upper bracket is provided with a height detector, the height detector is connected with a controller, the height adjustment driving mechanism is connected with the controller, and the controller is used for controlling the height adjustment driving mechanism to act according to a detection signal of the height detector.

In order to realize automatic levelness adjustment, the lower support is provided with a horizontal detector, the horizontal detector is connected with a controller, the horizontal adjusting mechanism is connected with the controller, and the controller is used for controlling the horizontal adjusting mechanism to act according to a detection signal of the horizontal detector.

In order to be convenient to install on the tractor, the connecting frame is a three-point suspension frame.

The utility model has the advantages that: the utility model discloses the lower carriage that will be used for bearing flat ground shovel designs into can the tilting and control pivoted structure for the lower carriage can the luffing motion but also can the left and right rocking motion, and the height of flat ground shovel can be adjusted through the tilting of control lower carriage, and the levelness that can adjust flat ground shovel is rotated through the left and right sides of control lower carriage. The utility model discloses can adjust the height and the levelness of flat ground shovel at flat ground in-process for the ground planarization that forms after the operation is accomplished is good.

Drawings

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

FIG. 2 is a schematic top view of example 1 of the present invention (the horizontal adjustment mechanism is not shown);

fig. 3 is a schematic rear view of embodiment 1 of the present invention;

fig. 4 is a schematic rear view of embodiment 2 of the present invention;

in the figure: 1. three point mounted frame, 2, the fore-stock sway strong point of lower carriage, 3, the after-stock sway strong point of lower carriage, 4, the lower carriage, 5, the upper bracket, 6, the level detector, 7, the height detector, 8, upper and lower carriage coupling assembling, 9, the level land shovel, 10, upper bracket front end mount pad, 11, the lower carriage front end mount pad, 12, the upper bracket rear end mount pad, 13, the lower carriage rear end mount pad, 14, the connecting seat, 15, left and right balance connecting rod, 16, the under-carriage sway actuating cylinder or electric putter, 17, two stretching rod under-carriage sway actuating cylinder, 18, the turning arm, 19, upper and lower carriage adjustment pull rod, 20, the upper carriage lift cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

The land leveler shown in fig. 1, 2 and 3 comprises a land leveling blade 9, a connecting frame, an upper support 5, a lower support 4, an upper support connecting assembly 8, a height adjusting driving mechanism and a horizontal adjusting mechanism, wherein the connecting frame adopts a three-point suspension frame 1, an upper support front end mounting seat 10 and a lower support front end mounting seat 11 are fixed on the connecting frame, the upper support 5 is connected on the upper support front end mounting seat 10 in a vertically rotating manner through a pin shaft, an upper support rear end fixing seat 12 is fixed at the rear end of the upper support 5, the upper end of the upper support connecting assembly 8 is connected on the upper support rear end fixing seat 12 in a vertically rotating manner, a lower support rear end fixing seat 13 is fixed at the rear end of the lower support 4, the lower end of the upper support connecting assembly 8 is connected on the lower support rear end fixing seat 13 in a vertically rotating manner and a horizontally rotating manner, the upper support connecting assembly 8 and the lower support rear end fixing seat 13 are connected through a second universal joint, form the lower carriage after 3, but lower carriage 4 and lower carriage front end mount pad 11 through first universal joint tilting and the rotation of controlling and be connected, but form the lower carriage before 2, the link, upper bracket 5, lower carriage 4 and upper and lower support coupling assembling 8 connect into first parallelogram, altitude mixture control actuating mechanism is used for driving upper bracket 5 and links up and down the frame relative rotation, altitude mixture control actuating mechanism is upper bracket lift cylinder 20, upper bracket lift cylinder 20 both ends articulate respectively link and upper bracket 5, level land shovel 9 sets up the downside in the rear end of lower carriage 4, horizontal adjustment mechanism is used for driving lower carriage 4 and rotates about 5 relative upper bracket. The deformation of the first parallelogram is controlled by the extension and contraction of the upper bracket lifting oil cylinder 20, so that the height of the land leveling shovel is controlled. The connecting frame may take other forms as long as the upper frame 5, the lower frame 4 and the upper frame lift cylinder 20 can be installed.

The horizontal adjusting mechanism comprises two crank arms 18 and two upper and lower support adjusting pull rods 19, corners of the two crank arms 18 are respectively hinged to the left side and the right side of the upper support 5, one ends of the two crank arms 18 are respectively hinged to the left side and the right side of the lower support 4 through the upper and lower support adjusting pull rods 19, connecting points between the two crank arms 18, the two upper and lower support adjusting pull rods 19 and the lower support 4 form a second parallelogram, the other ends of the two crank arms 18 are connected through a double-extension-rod lower-support swinging driving oil cylinder 17, the two crank arms 18 are respectively hinged to two ends of the double-extension-rod lower-support swinging driving oil cylinder 17, connecting points between the two crank arms 18, the double-extension-rod lower-support swinging driving oil cylinder 17 and the upper support 5 form a third parallelogram, and a cylinder body of the double-extension-rod lower-support swinging driving oil cylinder 17 is connected with the upper support 5 in an up-down sliding mode through a connecting seat 14. The double-extension-rod lower-bracket swinging driving oil cylinder 17 is an oil cylinder with piston rods fixed on both sides of a piston and two piston rods extending out from both ends of a cylinder body, and other oil cylinders in the invention adopt oil cylinders with only one piston rod. Two U-shaped sliding grooves are formed in the connecting seat 14, two clamping shafts are fixed to two sides of a cylinder body of the double-extension-rod lower support swing driving oil cylinder 17 respectively, the cylinder body is inserted into the connecting seat 14, and the two clamping shafts are clamped in the two sliding grooves in a vertically sliding mode respectively, so that the cylinder body can only slide vertically in the connecting seat 14 and cannot move left and right.

The embodiment further comprises a controller, a height detector 7 and a horizontal detector 6, wherein the height detector 7 is arranged on the upper support 5, the horizontal detector 6 is arranged on the lower support 4, the upper support lifting oil cylinder 20, the double-extension-rod lower support swinging driving oil cylinder 17, the height detector 7 and the horizontal detector 6 are connected with the controller, the controller is used for controlling the upper support lifting oil cylinder 20 to move according to a detection signal of the height detector 7 and controlling the double-extension-rod lower support swinging driving oil cylinder 17 to move according to a detection signal of the horizontal detector 6, and the double-extension-rod lower support swinging driving oil cylinder 17 can control the lower support 4 to swing left and right around the lower support front swinging supporting point 2 and the lower support rear swinging supporting point 3. The controller, the height detector 7 and the level detector 6 all use existing electrical components.

The working principle is as follows: firstly, a reference height is determined, when the height detected by the height detector 7 is greater than the reference height, the controller controls the upper support lifting oil cylinder 20 to contract, so that the rear end of the upper support 5 rotates downwards and drives the lower support 4 and the land leveling blade 9 to rotate downwards, so that the height of the land leveling blade 9 is reduced until the height detected by the height detector 7 reaches the reference height, and when the height detected by the height detector 7 is less than the reference height, the controller controls the upper support lifting oil cylinder 20 to extend, so that the rear end of the upper support 5 rotates upwards and drives the lower support 4 and the land leveling blade 9 to rotate upwards, so that the height of the land leveling blade 9 is adjusted upwards until the height detected by the height detector 7 reaches the reference height. When the horizontal detector 6 detects that the left side is higher, the controller controls the piston rod of the double-extension-rod lower bracket swing driving oil cylinder 17 to move leftwards, so that the left side crank arm pushes the left side upper and lower bracket adjusting pull rod 19 to move downwards, and meanwhile, the right side crank arm pushes the right side upper and lower bracket adjusting pull rod 19 to move upwards, so that the left side of the lower bracket 4 rotates downwards and rightwards upwards until the horizontal detector 6 detects that the left side reaches the level. When the level detector 6 detects that the right side is higher, the controller controls the piston rod of the double-extension-rod lower bracket swing driving oil cylinder 17 to move rightwards, so that the left crank arm pushes the left upper and lower bracket adjusting pull rod 19 to move upwards, and meanwhile, the right crank arm pushes the right upper and lower bracket adjusting pull rod 19 to move downwards, so that the left side of the lower bracket 4 rotates upwards and downwards until the level detector 6 detects that the level reaches the level.

Example 2

As shown in fig. 4, the present embodiment is different from example 1 in the structure of the horizontal adjustment mechanism. The horizontal adjusting mechanism of the embodiment comprises two crank arms 18 and two upper and lower support adjusting pull rods 19, corners of the two crank arms 18 are respectively hinged on the left side and the right side of an upper support 5, one end of each of the two crank arms is respectively hinged with the left side and the right side of a lower support 4 through the upper and lower support adjusting pull rods 19, connecting points between the two crank arms 18, the two upper and lower support adjusting pull rods 19 and the lower support 4 form a second parallelogram, the other ends of the two crank arms 18 are connected through left and right balance connecting rods 15, the two crank arms 18 are respectively hinged with the left and right balance connecting rods 15, connecting points between the two crank arms 18, the left and right balance connecting rods 15 and the upper support 5 form a third parallelogram, a lower support swinging driving oil cylinder or an electric push rod 16 for driving the crank arms 18 to rotate relative to the upper support 5 is connected between one crank arm 18 and the upper support 5, a support is fixed on the upper support 5, two ends of a lower bracket swing driving oil cylinder or an electric push rod 16 are respectively hinged with a crank arm 18 and a support. In the embodiment, the levelness of the left side and the right side of the land leveling shovel 9 is controlled by controlling the action of the lower bracket swing driving oil cylinder or the electric push rod 16. 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.

In this patent, the connecting assembly of the upper and lower frames is used as the front and rear connecting frames, the front and rear vertical surfaces are left and right on both sides of the horizontal direction, the upper frame is described in a position where the upper and lower frames are downward, the up-and-down rotation means rotation around an axis extending in the left-and-right direction, and the left-and-right rotation means rotation around an axis extending in the front-and-rear direction.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture, if the specific posture is changed, the directional indicator is changed accordingly.

Claims

1. A grader, comprising: including the flat ground shovel, the link, the upper bracket, the lower carriage, upper and lower support coupling assembling, altitude mixture control actuating mechanism and horizontal adjustment mechanism, the upper bracket can rotate from top to bottom with the link and be connected, upper and lower support coupling assembling's upper end tilting is connected on the upper bracket, upper and lower support coupling assembling's lower extreme can rotate from top to bottom and control the rotation and be connected on the lower carriage, the lower carriage can rotate from top to bottom with the link and control the rotation and be connected, the link, the upper bracket, lower carriage and upper and lower support coupling assembling connect into first parallelogram, altitude mixture control actuating mechanism is used for driving the relative link up-down rotation of upper bracket, the flat ground shovel sets up the downside at the rear end of lower carriage, horizontal adjustment mechanism is used for driving the relative upper bracket left and right rotation of lower carriage.

2. The grader of claim 1 wherein: the middle part of the front end of the lower support is connected with the connecting frame through a first universal joint, the lower end of the upper support connecting assembly and the lower support are connected with the lower support through a second universal joint, and the front end of the upper support is rotatably connected with the connecting frame through a pin shaft.

3. The grader of claim 1 wherein: the height adjusting driving mechanism is an upper support lifting oil cylinder, and two ends of the upper support lifting oil cylinder are respectively hinged with the connecting frame and the upper support.

4. The grader of claim 1 wherein: the horizontal adjusting mechanism comprises two crank arms and two upper and lower support adjusting pull rods, corners of the two crank arms are respectively hinged to the left side and the right side of the upper support, one end of each crank arm is hinged to the left side and the right side of the lower support through the upper and lower support adjusting pull rods, a second parallelogram is formed by a connecting point between the two upper and lower support adjusting pull rods and the lower support, the other ends of the two crank arms are connected through a left balancing connecting rod and a right balancing connecting rod, the two crank arms are hinged to the left and right balancing connecting rods, a third parallelogram is formed by a connecting point between the left and right balancing connecting rods and the upper support, and a crank arm driving mechanism for driving the crank arms to rotate relative to the upper support is connected between one crank arm and the upper support.

5. The grader of claim 4 wherein: the crank arm driving mechanism is a lower support swing driving oil cylinder or an electric push rod, and two ends of the crank arm driving mechanism are respectively hinged with the crank arm and the upper support.

6. The grader of claim 5 wherein: the upper bracket is fixed with a support, and the crank arm driving mechanism is hinged with the support.

7. The grader of claim 1 wherein: the horizontal adjusting mechanism comprises two crank arms and two upper and lower support adjusting pull rods, corners of the two crank arms are hinged to the left side and the right side of the upper support respectively, one ends of the two crank arms are hinged to the left side and the right side of the lower support respectively through the upper and lower support adjusting pull rods, a second parallelogram is formed by connection points between the two crank arms, the two upper and lower support adjusting pull rods and the lower support, the other ends of the two crank arms are connected through a double-extension-rod lower support swinging driving oil cylinder, the two crank arms are hinged to two ends of the double-extension-rod lower support swinging driving oil cylinder respectively, a third parallelogram is formed by the connection points between the two crank arms, the double-extension-rod lower support swinging driving oil cylinder and the upper support, and a cylinder body of the double-extension-rod lower support swinging driving oil cylinder is connected with the upper support in an up-and down sliding mode through a connection seat.

8. The grader according to any of claims 1-7, wherein: the height detection device is arranged on the upper support and connected with the controller, the height adjusting driving mechanism is connected with the controller, and the controller is used for controlling the height adjusting driving mechanism to act according to a detection signal of the height detection device.

9. The grader of claim 8 wherein: the lower support is provided with a horizontal detector, the horizontal detector is connected with a controller, the horizontal adjusting mechanism is connected with the controller, and the controller is used for controlling the horizontal adjusting mechanism to act according to a detection signal of the horizontal detector.

10. The grader according to any of claims 1-7, wherein: the connecting frame is a three-point suspension frame.