Alternating type driving mechanism of double bundling machines
By using an alternating drive mechanism, the problems of equipment instability and high energy consumption caused by synchronous drive of dual balers are solved, achieving a more stable and energy-efficient operation and extending the equipment's lifespan.
Patent Information
- Application Number
- CN202520561515.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-28
AI Technical Summary
The existing synchronous drive structure of double balers results in unstable operation, high energy consumption, high noise, short component life, and high cost.
An alternating drive mechanism is adopted, with two crankshafts coaxially connected through the output end of the gearbox. The cranks are arranged with a 180-degree phase difference. The pistons are connected to the crankshafts through connecting rods. The feed fork works in coordination with the pistons through a transmission device to achieve the alternating action of the pistons.
It reduces vibration and impact, lowers equipment energy consumption, improves operational stability and equipment lifespan, and reduces maintenance costs.
Smart Images

Figure CN223912993U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, specifically to an alternating drive mechanism for a double baler. Background Technology
[0002] With the continuous development of agricultural and livestock production technology in my country, the use of balers has gradually become more widespread. Currently, commonly used balers are mainly single-baler balers, with only one baling channel, capable of baling only one bale of straw at a time, resulting in low efficiency. To improve baling efficiency, patent document CN222284028U provides a technical solution for a "double-outlet baler-type square baler." This solution uses a double baling channel, enabling simultaneous baling of two bales of straw, doubling the baling efficiency. However, this baler uses two gearboxes to drive two pistons in synchronous motion, completing two baling actions at the same time. This synchronous drive structure is not only complex and expensive, but also consumes a lot of power during operation due to the simultaneous work of the two pistons. Furthermore, the vibrations are superimposed at the same time, causing significant impact on the equipment, leading to unstable operation, amplified noise, and a poor driving experience. Under long-term continuous vibration and impact, the equipment ages and wears out faster, affecting the service life of related components and greatly increasing the cost of use and maintenance. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide a drive mechanism for a double baler with alternating drive that is more stable in operation.
[0004] The technical solution of this utility model is: an alternating drive mechanism for a double baler, including a gearbox, pistons and a feeding fork. Each side of the gearbox has an output end, the two output ends are coaxially arranged and connected to a crankshaft respectively. The cranks of the two crankshafts are arranged with a 180-degree phase difference. The pistons are connected to the cranks of one crankshaft respectively through connecting rods. The output end of the gearbox is connected to the input shaft of the feeding fork through a transmission device, driving the feeding fork to work in coordination with the pistons in the same group.
[0005] The technical advantages of this invention are: reasonable design, simple structure, low energy consumption, and smoother operation. The alternating drive mechanism drives two pistons to move alternately, staggering the working moments of the two pistons. This not only reduces vibration and impact, making the equipment run more smoothly, but also reduces drive power and lowers energy consumption. Attached Figure Description
[0006] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0007] Figure 2 This is a top view of the structure of this utility model;
[0008] Figure 3 This is a side view of the structure of this utility model. Detailed Implementation
[0009] like Figure 1 , 2 As shown in Figure 3, an alternating drive mechanism for a double baler includes a gearbox 1, pistons 2, and a feed fork 3. The input shaft of the gearbox is connected to the output end of the engine. The output end of the gearbox drives the pistons and feed forks to cooperate in action. The gearbox 1 has an output end on each side, coaxially arranged and each connected to a crankshaft 4. The cranks 5 of the two crankshafts 4 are arranged with a 180-degree phase difference. The pistons 2 are connected to the cranks 5 of one crankshaft 4 via connecting rods 6. The output end of the gearbox 1 is connected to the input shaft of the feed fork 3 via a transmission device, driving the feed fork 3 to cooperate with the pistons 2 in the same group. The gearbox has two output ends that drive a set of pistons and feed forks respectively. The feed fork pushes the straw conveyed by the pickup mechanism upwards to the height of the piston for compression and baling.
[0010] The feed fork 3 is connected to the output end of the gearbox 1 via a chain drive. A sprocket is provided on the drive shaft of the feed fork and at the output end of the gearbox, and the gearbox drives the feed fork to operate via the sprocket and chain.
[0011] One possible arrangement for the chain drive device is as follows: the ends of the two crankshafts 4 are respectively provided with sprockets 7, and the two output ends of the gearbox 1 are respectively connected to the feed fork 3 on the same side through the crankshafts 4, sprockets 7 and chains 8.
[0012] The second arrangement of the chain drive device is as follows: the two feed forks 3 are coaxial and connected with a 180-degree phase difference, one of the two crankshafts 4 is provided with a sprocket 7 at its end, and the gearbox 1 is connected to the input shaft of the feed fork 3 through the crankshaft 4, sprocket 7 and chain 8 on that side.
[0013] The chain drive device is equipped with a sprocket 9. The sprocket is used to tension the chain or change the chain path to meet the power requirements of other devices.
Claims
1. An alternating drive mechanism for a double baler, comprising a gearbox (1), a piston (2), and a feed fork (3), characterized in that, The gearbox (1) has an output end on each side. The two output ends are coaxially arranged and connected to a crankshaft (4) respectively. The cranks (5) of the two crankshafts (4) are arranged with a 180-degree phase difference. The piston (2) is connected to the crank (5) of a crankshaft (4) respectively through a connecting rod (6). The output end of the gearbox (1) is connected to the input shaft of the feed fork (3) through a transmission device, driving the feed fork (3) to work together with the piston (2) in the same group.
2. The alternating drive mechanism of the double baler as described in claim 1, characterized in that, The feed fork (3) is connected to the output end of the gearbox (1) via a chain drive.
3. The alternating drive mechanism of the double baler as described in claim 2, characterized in that, The ends of the two crankshafts (4) are respectively provided with sprockets (7), and the two output ends of the gearbox (1) are respectively connected to the feed fork (3) on the same side through the crankshaft (4), sprockets (7) and chain (8).
4. The alternating drive mechanism of the double baler as described in claim 2, characterized in that, The two feed forks (3) are coaxial and connected with a 180-degree phase difference. One of the two crankshafts (4) has a sprocket (7) at its end. The gearbox (1) is connected to the input shaft of the feed fork (3) through the crankshaft (4), sprocket (7) and chain (8).
5. The alternating drive mechanism of the double baler as described in claim 3 or 4, characterized in that, The chain drive device is equipped with a sprocket (9).
Citation Information
Patent Citations
Double-bale-outlet knotter type square bale bundling machine
CN222284028U