CN104541762B - Band saw type leaf vegetables harvesting device - Google Patents

Abstract

The invention relates to a band saw type leaf vegetable harvesting device. The purpose is to provide a device that can be installed on a leafy vegetable harvester to efficiently position and cut leafy vegetables in the field, and has the characteristics of simple structure, convenient manufacture and maintenance, and low cost. The technical solution is: a band saw type leafy vegetable harvesting device, characterized in that the device includes a band saw for cutting leafy vegetables, a cutting mechanism for driving the band saw, and an adjustment mechanism for adjusting the tension of the band saw; The active cutting box and the driven cutting box on both sides, the band saw wheel for supporting the band saw installed in the active cutting box and the driven cutting box respectively, and the motor driving the band saw wheel installed in the active cutting box; The adjustment mechanism is installed in the driven cutting box, including a pressure wheel plate that can rotate around the hinge axis, a pressure wheel that is rotatably positioned on the pressure wheel plate and used to press the band saw, and exerts force on the pressure wheel plate to adjust the band saw. Adjustment screw assembly for saw tension adjustment.

Description

Band saw leaf vegetable harvesting device

technical field

The invention relates to a green vegetable harvester, in particular to a band saw type harvester used for harvesting leafy vegetables.

Background technique

With the development of modern agricultural technology, vegetable mechanized harvesting technology has been paid more and more attention in our country. Especially the mechanized harvesting technology of leafy vegetables is still in its infancy in China. Due to the inefficiency of manually harvesting vegetables, and with the increase of the aging trend of our population, the number of laborers tends to decline. The harvesting of leafy vegetables has also gradually changed from manual operation to mechanized operation. However, the current leaf vegetable mechanical harvesters still have the defects of unstable cutting and incomplete harvest; and the distribution of fields in southern my country is fragmented and scattered, which is not suitable for large harvesters.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned background technology, and to provide a band saw type cutting device suitable for automatic and semi-automatic small-scale leafy vegetable harvesters. The leaf vegetable in the field can be positioned and cut accurately, and has the characteristics of simple structure, convenient manufacture and maintenance, and low cost.

The technical scheme that the present invention adopts is as follows:

A band saw type leaf vegetable harvesting device, characterized in that the device includes a band saw for cutting leaf vegetables, a cutting mechanism for driving the band saw, and an adjustment mechanism for adjusting the tension of the band saw;

The cutting mechanism includes a driving cutting box and a driven cutting box respectively located on both sides of the harvester, a band saw wheel for supporting a band saw installed in the driving cutting box and a driven cutting box respectively, and a belt saw wheel installed in the driving cutting box A motor driving the band saw wheel;

The adjustment mechanism is installed in the driven cutting box, including a pressure wheel plate that can rotate around the hinge axis, a pressure wheel that is rotatably positioned on the pressure wheel plate and used to press the band saw, and exerts force on the pressure wheel plate to Adjustment screw assembly for band saw tension adjustment.

In the active cutting box and the driven cutting box, two bandsaw wheels are arranged parallel to each other, and the distance between the rotating shafts of the two bandsaw wheels in the active cutting box is the same as that of the two bandsaw wheels in the driven cutting box. The shafts are equally spaced.

The motor transmits power with a band saw wheel rotating shaft in the driving cutting box through a coupling or a gear set.

The middle part of the pressure wheel plate is formed with a hinge hole, which is rotatably positioned in the driven cutting box body through a hinge shaft fixed to the driven cutting box body; one end of the pressure wheel plate is connected to the adjustment screw assembly, The other end extends to the outside of the driven cutting box and the pressure roller is installed through the rotating shaft.

The adjustment screw assembly includes a spring connected to the pressure wheel plate at one end and an adjustment screw fixed to the other end of the spring; the adjustment screw is also fixed on the positioning block through a nut group to realize the movement adjustment of the position of the pressure wheel.

The working principle of the present invention is: the motor is started, and the active band saw wheel in the active cutting box drives the saw blade to move. After the saw blade transmits the motion to another band saw wheel in the box, it crosses the frame and transmits the motion to the driven band saw. The two bandsaw wheels of the box allow the saw to turn quickly to get the movement needed to cut the vegetables.

The beneficial effects of the present invention are: the device provided by the present invention is installed on the front end of the leafy vegetable harvester, and the sawtooth of the band saw faces forward, so that vegetables such as leafy vegetables in the field can be harvested; since the band saw can be set at a lower location, so the harvesting of vegetables is relatively thorough and has high harvesting efficiency, and the vibration is small during work. In addition, the structure of the device is relatively simple, the manufacture and maintenance are relatively convenient, the cost is not high, and the device has wide promotion and application prospects.

Description of drawings

Fig. 1 is a structural schematic diagram of one of the three-dimensional states of the present invention.

Fig. 2 is a structural schematic diagram of the second three-dimensional state of the present invention.

Fig. 3 is a schematic perspective view of the three-dimensional structure of the active cutting box.

Fig. 4 is a perspective view of the driven cutting box.

Fig. 5 is a schematic perspective view of the adjustment mechanism.

Fig. 6 is a schematic diagram of the installation position of the present invention on a leaf vegetable harvester.

detailed description

The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings; but the present invention is not limited to the following embodiments.

In the band saw harvesting device shown in FIG. 1 : the band saw 1 is used to cut leafy vegetables, the cutting mechanism is used to drive the band saw, and the adjustment mechanism is used to adjust the tension of the band saw.

In the cutting mechanism: the active cutting box 2 and the driven cutting box 4 are respectively located on both sides of the harvester (as seen in Figure 6, it is located on the left and right sides of the harvester; it is recommended that the active cutting box be arranged in parallel with the driven cutting box); The active cutting box and the driven cutting box are respectively installed (installed by bearings) two bandsaw wheel shafts (two bandsaw wheels of the same specification are preferably in the same cutting box) and the four bandsaw wheel shafts are arranged parallel to each other, and The arrangement of the axis of the rotating shaft of the band saw wheel is designed with the goal of maintaining a substantially horizontal state during cutting work. The band saw is wound on the wheel faces of the four band saw wheels with a certain tension, and is driven by the band saw wheels.

As a recommendation: the distance between the two band saw wheel shafts 2-6 in the active cutting box is equal to the space between the two band saw wheel shafts 4-5 in the driven cutting box; the distance is determined according to actual needs .

The motor 2-1 is installed in the active cutting box casing 2-2 (as shown in Figure 3) through a bracket, and the motor shaft is connected to a band saw wheel rotating shaft in the active cutting box through a coupling or a gear set; Saw wheels 2-4 are installed in the driving cutting box body parallel to each other axis; two driven band saw wheels 4-2 are also installed in the driven cutting box body 4-1 parallel to each other axis (as shown in Figure 4 ). Obviously, the motor turns and the band saw is driven.

The adjustment mechanism shown in Figure 5 is installed on the driven cutting box body 4-1; in the adjustment mechanism: the middle part of the pressure wheel plate 3-6 is shaped with a hinged hole; the hinged shaft 3-9 is plugged into the hinged hole After matching, it is fixed in the driven cutting box (the axis of the hinge shaft is parallel to the axis of the driven band saw wheel); the pressure wheel plate is rotatably positioned in the driven cutting box; one end of the pressure wheel plate is fixed Connecting block 3-5, the other end of the pressure wheel plate rotatably locates a pressure wheel 3-7 (the pressure wheel shaft 3-8 is installed on the pressure wheel plate through bearings) and extends to the outside of the driven cutting box; the screw assembly is applied Force on the connecting block to rotate the pressure wheel plate, so as to realize the adjustment of the tension of the band saw.

In the adjusting screw assembly: one end of the spring 3-3 hooks the fixed screw 3-4 and is fixed on the connection block, and the other end of the spring hooks the fixed adjusting screw 3-1 and passes through the positioning block 3-2 (positioning The block is fixed on the frame) and then the adjusting screw is clamped on the positioning block through the front and rear two adjusting nuts; the adjusting screw exerts tension on the spring, and then presses the band saw through the pressure wheel on the pressure wheel plate. The band saw generates the corresponding tension. Obviously, turning the two adjusting nuts to move the adjusting screw (the dotted arrow A in Figure 5 indicates the sliding direction of the adjusting screw), the tension of the spring on the pressure wheel plate changes, and the pressure of the pressure wheel on the band saw changes immediately; and, The adjusting screw presses the connecting block through the spring, so that the tension generated by the band saw can be flexibly changed within a certain range, which is beneficial to the normal operation of the machine.

The installation position of the present invention on the harvester is as shown in Figure 6; during work, the motor rotates to drive the active band saw wheel, and then the motion is transmitted to the driven band saw wheel through the band saw, thus realizing the fast rotation of the band saw 1, thereby Gained the motion needed to cut vegetables.

Claims (4)

1. The band saw type leaf vegetable harvesting device is characterized in that: the device comprises a band saw (1) for cutting leaf vegetables, a cutting mechanism for driving the band saw and an adjustment mechanism for adjusting the tension of the band saw; The cutting mechanism comprises a driving cutting box (2) and a driven cutting box (4) respectively located on both sides of the harvester, a band saw wheel for supporting a band saw installed in the driving cutting box and the driven cutting box respectively, The motor (2-1) that is installed in the driving band saw wheel of active cutting box; The adjustment mechanism is installed in the driven cutting box, including a pressure wheel plate (3-6) that can rotate around the hinge axis, and a pressure wheel (3-6) that is rotatably positioned on the pressure wheel plate and used to press the band saw. 7) and the adjusting screw assembly for adjusting the tension of the band saw by pressing the moving pressure wheel plate; In the active cutting box and the driven cutting box, two bandsaw wheels are arranged parallel to each other, and the distance between the rotating shafts of the two bandsaw wheels in the active cutting box is the same as that of the two bandsaw wheels in the driven cutting box. The shafts are equally spaced. 2. The band saw leaf vegetable harvesting device according to claim 1, characterized in that: the motor transmits power to a band saw wheel rotating shaft in the active cutting box through a coupling or a gear set. 3. The band saw type leaf vegetable harvesting device according to claim 2, characterized in that: the middle part of the pressure wheel plate is shaped on a hinged hole, through which a hinged shaft (3- 9) It is rotatably positioned in the driven cutting box; one end of the pressure wheel plate is connected to the adjustment screw assembly, and the other end extends to the outside of the driven cutting box and the pressure wheel is installed through the rotating shaft. 4. The band saw type leafy vegetable harvesting device according to claim 3, characterized in that: the adjusting screw assembly includes a spring (3-3) connected to the pressure wheel plate at one end and an adjusting screw fixed to the other end of the spring (3-1); the adjustment screw is also fixed on the positioning block (3-1) by a nut group, so as to realize the movement adjustment of the pressure roller position.