Forage baling apparatus
By using the front and rear box structures and a hydraulically controlled baling belt, the problems of low bale density and high manufacturing cost were solved, resulting in denser bales and reduced costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHANGHENG AGRICULTURAL MACHINERY CO LTD
- Filing Date
- 2025-09-05
- Publication Date
- 2026-07-24
AI Technical Summary
Existing bale-making equipment results in low bale density and high manufacturing costs.
It adopts a front and rear box structure, combined with an upper feeding roller, a lower feeding roller, a baling belt and a hydraulic system. Through the squeezing of the upper and lower feeding rollers and the rotation of the baling belt, dense bales are formed. The hydraulic system controls the tension of the baling belt and the bale forming process.
This increases the density of the hay bales, reduces their volume, facilitates transportation and storage, and lowers the manufacturing cost of the equipment.
Smart Images
Figure CN224538867U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural machinery and relates to a baling device for collecting and baling plant stalks, hay, etc. Background Technology
[0002] Crop straw or pasture fodder needs to be collected for use as feed or fuel, and generally requires baling and wrapping for convenient transportation and storage. Patent CN207321985U discloses an integrated baling and wrapping machine. The baling chamber includes a fixed chamber and a movable chamber. The movable chamber has rear baling rollers arranged in an arc, and the front of the fixed chamber has front baling rollers arranged in an arc. A support roller is located at the bottom of the fixed chamber, forming a straw inlet between the support roller and the front baling rollers. The fodder enters the cylindrical space formed by the rear and front baling rollers through the inlet. The rotation of the rear and front baling rollers causes the fodder to clump together, and under the action of centrifugal force and the feeding force, it forms a bale. Its disadvantages are that the bale density is relatively low, resulting in a larger volume for the same weight; the machine also has a large number of baling rollers, leading to higher manufacturing costs. Summary of the Invention
[0003] The purpose of this invention is to provide a hay baling device that solves the problems of low bale density and high manufacturing cost of existing baling devices.
[0004] The purpose of this utility model is achieved as follows: A hay baling device includes a front box and a rear box, the upper parts of the front box and the rear box are hinged together, and hinged support rollers are provided between the hinged parts on both sides of the front box and the rear box. Rotatable upper feeding rollers and lower feeding rollers are supported on the side walls at the front of the front box, and the upper and lower feeding rollers are connected to a rotational power source and rotate inwards relative to each other. Rotatable belt support rollers are provided in the inner cavity of the front box below the hinged support rollers and supported by the side walls. Rotatable belt support rollers are provided at the four corners of the inner cavity of the rear box and supported by the side walls. At least one of the rollers, hinged support rollers, and belt support rollers is connected to a rotational power source; a pressure belt surrounds the hinged support rollers and belt support rollers to form a closed annular belt; hydraulic cylinders are symmetrically arranged on the outer walls of both sides of the front and rear boxes, with the cylinder body of the hydraulic cylinder hinged to the outer wall of the front box and the piston rod of the hydraulic cylinder hinged to the outer wall of the rear box or a connecting piece on the outer wall; a belt pressure roller under preload is arranged in the inner cavity of the rear box between the two belt support rollers at the upper part of the rear box, pressing on the pressure belt; a spring tension roller is arranged at the middle of the height of the rear box, located at the rear of the pressure belt.
[0005] The rear box has pressure roller support shafts on both side walls, with both ends passing through the side walls. Symmetrically arranged inner swing arms are fixed to the pressure roller support shafts near the inner walls of the rear box. The other ends of the two inner swing arms are hinged to belt pressure rollers. Symmetrically arranged outer swing arms are fixed to both ends of the pressure roller support shafts outside the rear box. The outer swing arms are hinged to the piston rods of the hydraulic cylinders. This structure serves as a mechanism for applying preload to the belt pressure rollers to maintain tension when bundling the belt. The piston rod of the hydraulic cylinder is hinged to the outer swing arms, which are fixed to the pressure roller support shafts. The pressure roller support shafts are supported on the rear box, thus achieving the connection between the hydraulic cylinder and the rear box.
[0006] The spring tension roller mechanism consists of thin shafts at both ends of the spring tension roller extending from the arc-shaped grooves on both sides of the rear box. Symmetrically arranged tension roller arms are hinged to the outside of the rear box's side walls. The lower ends of the tension roller arms are hinged to the ends of the thin shafts of the spring tension roller. A tension spring is suspended between the tension roller arms and the front part of the outer wall of the rear box. The tension spring pulls the tension roller arms, causing the spring tension roller to press against the outside of the strapping belt. Under the tension of the spring, the strapping belt is tensioned in real time. The belt pressure roller, as the main tension roller of the strapping belt, and the spring tension roller, serve to buffer the sudden impact force on the strapping belt.
[0007] The end of the tension roller swing arm that is hinged to the rear box can be hinged to a support shaft set on the outer wall of the rear box. In order to reduce the number of parts, the pressure roller support shaft can be used as a support, and the tension roller swing arm can be hinged to the end of the pressure roller support shaft. Since the pressure roller support shaft is rotatably fixed to the rear box, the purpose of hinged tension roller swing arm to the rear box is achieved.
[0008] The upper and lower feeding rollers are set in two pairs, one in front and one behind. The distance between the upper and lower feeding rollers of the front pair is greater than the distance between the rear pair, which can compress the fed grass and push it backward to the baling belt.
[0009] The compression belt consists of several narrow belts arranged side by side, usually 5 or 6. When the equipment is wide, the number of narrow belts can be increased appropriately.
[0010] This utility model can be equipped with a feeding conveyor and used independently as a baling device in a fixed position. When mobile operation is required, ground wheels are installed on both sides of the front box, and a straw picker is installed at the bottom of the front of the front box. The tractor pulls the device forward, picking up straw or forage from the field. The straw is then driven to the front of the baling belt via the upper and lower feeding rollers. The forage is pressed backward against the baling belt, gradually forming an arc shape. The forage rotates and clumps under the influence of the baling belt. As the baling belt is pressed backward, it pulls the belt pressure roller upward to release the required length for the arc shape. The upward movement of the belt pressure roller causes the inner swing arm to swing, which in turn drives the pressure roller support shaft to rotate. The pressure roller support shaft then drives the outer swing arm to swing, pulling the hydraulic cylinder piston rod slightly outward. At this time, the hydraulic oil in the piston rod cavity acts as a damping force for the upward movement of the pressure roller. This damping force is transmitted to the belt pressure roller and applied to the baling belt to tighten it. The pressure; through the squeezing of the upper and lower upper feeding rollers, and the baling belt driving the hay to rotate and compress it into bales, when the hay bales are close to forming a preset size, the top of the front box releases a packaging mesh to cover the bales. When the piston rod extends outward and touches the limit switch, it sends a baling signal. The control part controls the hydraulic reversing valve, causing the hydraulic cylinder piston rod to extend actively. Since the extension length of the piston rod is much greater than the length of the outer swing arm, when the piston rod extends actively, the outer swing arm swings at a certain angle and then stops swinging. At this time, the piston rod drives the outer swing arm, and the outer swing arm pulls the pressure roller support shaft. The pressure roller support shaft drives the rear box to rotate around the hinge point with the front box at a certain angle. The bottom of the rear box opens at a certain angle relative to the front box, that is, a certain distance appears between the bottom of the rear box and the front box, forming a channel for the hay bales to fall. The hay bales move backward from the bottom of the front box and fall to the ground. Then the rear box returns to the state of being aligned with the front box, and the hay picking and baling work continues.
[0011] The beneficial effects of this utility model are: (1) The upper and lower feeding rollers push the grass material forward, and the baling belt drives the grass material to rotate and press it into a bale. The bale formed is relatively dense, and the volume of the bale of the same weight is smaller, which is convenient for transportation and storage; (2) The manufacturing cost is reduced by replacing the cylindrical bale cavity formed by the densely arranged baling rollers with the baling belt. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the front and rear boxes; Figure 3 This is a structural diagram showing the positions of the compression belt and each roller; Figure 4 This is a schematic diagram showing the connection between the belt pressure roller and the spring tension roller and related components.
[0013] In the diagram: 1-Front box; 2-Rear box; 3-Hinged support roller; 4-Upper feed roller; 5-Lower feed roller; 6-Hydraulic cylinder; 7-Outer swing arm; 8-Pressure roller support shaft; 9-Inner swing arm; 10-Belt pressure roller; 11-Tension roller swing arm; 12-Tension spring; 13-Spring tension roller; 14-Arc groove; 15-Bundling belt; 16-Belt support roller. Detailed Implementation
[0014] Reference Figures 1-4 A hay baling device includes a front box 1 and a rear box 2, which are hinged together at their upper joints. A hinged support roller 3 is provided between the hinged portions on both sides of the front box 1 and the rear box 2. Rotatable upper feeding roller 4 and lower feeding roller 5 are supported on the side walls at the front of the front box 1. The upper feeding roller 4 and lower feeding roller 5 are arranged in two pairs, front and rear. The distance between the front pair of upper feeding roller 4 and lower feeding roller 5 is greater than the distance between the rear pair, forming a wedge-shaped feed inlet. The upper feeding roller 4 and lower feeding roller 5 are connected to a rotational power source and rotate inwards relative to each other. Inside the cavity of box 1, rotatable belt support rollers 16 are located below the hinged support roller 3 and supported by the side walls. In the cavity of the rear box 2, belt support rollers 16, supported by the side walls and rotatable, are located at the four corners. At least one of the hinged support roller 3 and belt support rollers 16 is connected to a rotational power source. A pressure belt 15 forms a closed loop around the hinged support roller 3 and belt support rollers 16. The pressure belt 15 consists of five narrow belts arranged side-by-side and rotates under the drive of the hinged support roller 3 and belt support rollers 16. The outer walls on both sides of the front box 1 and rear box 2... Hydraulic cylinders 6 are symmetrically arranged on the upper part, and the cylinder body of the hydraulic cylinder 6 is hinged to the outer wall of the front box 1. A belt pressure roller 10 is arranged in the inner cavity of the rear box 2 between the two belt support rollers 16 at the upper part of the rear box 2. The belt pressure roller 10 presses on the bundled belt 15. Pressure roller support shafts 8 with both ends passing through the side walls of the rear box 2 are supported on the upper two side walls of the rear box 2. Symmetrically arranged inner swing arms 9 are fixed on the pressure roller support shafts 8 near the inner walls of the two sides of the rear box 2. The other ends of the two inner swing arms 9 are hinged to the belt pressure roller 10. Symmetrically arranged outer swing arms 7 located outside the rear box 2 are fixed at both ends of the pressure roller support shafts 8. The outer swing arm 7 is hinged to the piston rod of the hydraulic cylinder 6; a spring tension roller 13 is provided at the middle of the height of the rear box 2, located behind the pressure belt 15. The thin shafts at both ends of the spring tension roller 13 extend from the arc grooves 14 on both sides of the rear box 2 outside the rear box 2. Tension roller swing arms 11 are symmetrically arranged on both sides of the rear box 2. One end of the tension roller swing arm 11 is hinged to the end of the pressure roller support shaft 8 located outside the rear box 2, and the other end of the tension roller swing arm 11 is hinged to the thin shaft end of the spring tension roller 13. A tension spring 12 is hung between the tension roller swing arm 11 and the front part of the outer wall of the rear box 2.
[0015] Ground wheels are installed on both sides of the front box 1. A grass picker is installed at the bottom of the front of the front box 1. The tractor pulls the grass forward, and the grass or hay is picked up by the grass picker and driven to the front of the baling belt 15 through the upper feed roller 4 and the lower feed roller 5. The hay pushes the baling belt 15 backward, and the hay is rotated into a ball under the action of the baling belt 15. The baling belt 15 pulls the belt pressure roller 10 upward to release the required length. The upward movement of the belt pressure roller 10 causes the outer swing arm 7 to pull the piston rod of the hydraulic cylinder 6. Extending outwards, the hydraulic oil in the piston rod chamber of the cylinder acts as a damping force; through the upper feeding roller 4 and the lower feeding roller 5, the straw is squeezed and compressed into bales by the bale belt 15, which drives the straw to rotate. After being covered by the mesh, the straw is bales. The piston rod extends actively and pushes the outer swing arm 7, the pressure roller support shaft 8 and the rear box 2. The rear box 2 rotates relative to the front box 1, and a channel for the straw bales to fall is formed between the bottom of the rear box 2 and the front box 1. The straw bales fall to the ground; then the rear box 2 returns to the state of being aligned with the front box 1 and continues the work of picking up and baling straw.
Claims
1. A hay baling device, comprising a front box and a rear box, wherein the upper joints of the front box and the rear box are hinged together, characterized in that: A hinge support roller (3) is provided between the hinged parts on both sides of the front box (1) and the rear box (2). Rotatable upper feeding roller (4) and lower feeding roller (5) are supported on the two side walls at the front of the front box (1). The upper feeding roller (4) and lower feeding roller (5) are connected to a rotational power source and rotate inward relative to each other. Rotatable belt support rollers (16) are supported by the two side walls below the hinge support roller (3) in the inner cavity of the front box (1). Rotatable belt support rollers (16) are provided at the four corners of the inner cavity of the rear box (2). At least one of the hinge support roller (3) and belt support roller (16) is connected to a rotational power source. A pressure-bundled leather belt is present. The belt (15) forms a closed annular belt around the hinged support roller (3) and the belt support roller (16); hydraulic cylinders (6) are symmetrically arranged on the outer walls of the front box (1) and the rear box (2). The cylinder body of the hydraulic cylinder (6) is hinged to the outer wall of the front box (1), and the piston rod of the hydraulic cylinder (6) is hinged to the outer wall or the outer wall connector of the rear box (2); a belt pressure roller (10) under preload is arranged in the inner cavity of the rear box (2) between the two belt support rollers (16) at the upper part of the rear box (2). The belt pressure roller (10) presses on the pressure belt (15). A spring tension roller (13) is arranged at the middle of the height of the rear box (2) at the rear of the pressure belt (15).
2. The hay baling device according to claim 1, characterized in that: The upper two sides of the rear box (2) are supported by pressure roller support shafts (8) with both ends passing through the side walls of the rear box (2). The pressure roller support shafts (8) are fixed with symmetrically arranged inner swing arms (9) on the inner walls of both sides near the rear box (2). The other ends of the two inner swing arms (9) are hinged to belt pressure rollers (10). The two ends of the pressure roller support shafts (8) are fixed with symmetrically arranged outer swing arms (7) outside the rear box. The outer swing arms (7) are hinged to the piston rod of the hydraulic cylinder (6).
3. The hay baling device according to claim 1, characterized in that: The thin shafts at both ends of the spring tension roller (13) extend out of the arc grooves (14) on both sides of the rear box (2) and are hinged to the outside of the rear box (2). The tension roller swing arms (11) are symmetrically arranged on both sides of the rear box (2). The lower end of the tension roller swing arm (11) is hinged to the end of the thin shaft of the spring tension roller (13). A tension spring (12) is hung between the tension roller swing arm (11) and the front part of the outer wall of the rear box (2).
4. The hay baling device according to claim 1, characterized in that: The upper feed roller (4) and the lower feed roller (5) are set as two pairs, one in front and one behind. The distance between the upper feed roller (4) and the lower feed roller (5) of the front pair is greater than the distance between the rear pair.
5. The hay baling device according to claim 1, characterized in that: The compression belt (15) consists of several narrow belts arranged side by side.