Transmission crank of bundling machine

Abstract

The utility model provides a transmission crank of a bundling machine, which comprises a crank with one end connected with the output end of a transfer case; one end of the connecting plate is fixedly connected with the other end of the crank; one end of the connecting rod is fixedly connected with the other end of the connecting plate, and the other end is rotationally connected with the piston mechanism; the crank is parallel to the connecting rod and perpendicular to the connecting plate; and the other end of the connecting rod is provided with a lubricating oil circuit which is filled with lubricating oil and used for lubricating the connecting rod and the piston mechanism. According to the utility model, the crank and the connecting rod are fixedly connected, so that a gap at the joint of the traditional crank and the connecting rod is eliminated, and when the bundling machine operates, the transfer case operates more stably and does not shake; in addition, the driving end of the piston mechanism is closed, the other end of the connecting rod is inserted into the driving end of the piston mechanism, and when lubricating oil between the connecting rod and the piston mechanism is insufficient, the lubricating oil in the lubricating oil way can be supplemented in time, so that the hydraulic cylinder can stably run for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of baling machines, in particular to a transmission crank for a baling machine. Background Art

[0002] Balers are a crucial piece of agricultural mechanization equipment, primarily used to compress and pack loose forage for transport and storage. The crank-connecting rod mechanism, a core component of the baler, has a significant impact on its efficiency and service life.

[0003] A conventional baler crank-connecting rod mechanism is typically composed of an articulated crank and connecting rod. For example, Chinese patent CN217183925U discloses a baler compression device and a baler, wherein one end of the crank is connected to the transfer case output shaft of the baler, the other end of the crank is rotatably connected to one end of the connecting rod, and the other end of the connecting rod is rotatably connected to a piston mechanism.

[0004] While the above structure is simple, the crank and connecting rod are hinged, resulting in a large gap at the joint. This causes the transfer case to operate unstable and experience significant vibration during the rotation of the crank-connecting rod mechanism. This vibration not only reduces the baler's operating efficiency but also accelerates wear of the crank-connecting rod mechanism, shortening the baler's service life.

[0005] Furthermore, the crank and connecting rod are connected by a pin. While this connection provides a certain degree of mobility, due to its small diameter, the torque it can withstand is limited, making it prone to breakage. Furthermore, the pin connection wears quickly, requiring frequent replacement, increasing maintenance costs. Utility Model Content

[0006] In order to solve the technical problems in the background technology, the utility model discloses a baler transmission crank.

[0007] The utility model provides a baler transmission crank, comprising:

[0008] a crank, one end of which is connected to the output end of the transfer case;

[0009] a connecting plate, one end of which is fixedly connected to the other end of the crank;

[0010] A connecting rod, one end of which is fixedly connected to the other end of the connecting plate and the other end of which is rotatably connected to the piston mechanism;

[0011] The crank is parallel to the connecting rod and perpendicular to the connecting plate;

[0012] The other end of the connecting rod is provided with a lubricating oil circuit, which is filled with lubricating oil for lubricating the connecting rod and the piston mechanism.

[0013] The utility model adopts a fixed connection method between the crank and the connecting rod, which eliminates the gap at the connection between the traditional crank and the connecting rod, so that when the baler is running, the transfer case runs more stably and does not shake; in addition, the driving end of the piston mechanism is closed, and the other end of the connecting rod is inserted into the driving end of the piston mechanism. When the lubricating oil between the connecting rod and the piston mechanism is insufficient, the lubricating oil in the lubricating oil circuit will be replenished in time, so that the utility model can operate for a long time and stably.

[0014] In order to improve the stability of the direct connection between the transfer case output end and the crank and avoid slipping, a further design is: a spline is provided at one end of the crank, and a sleeve for clamping the spline is provided at the transfer case output end.

[0015] The crank, connecting plate, and connecting rod are specifically connected by welding. The connecting rod is also connected by welding. To facilitate welding and reduce deformation at the weld, a further design is as follows: the other end of the crank passes through the connecting plate, with the portion protruding from the plate serving as a first protrusion; the first protrusion is secured to the connecting plate by welding. One end of the connecting rod passes through the connecting plate, with the portion protruding from the plate serving as a second protrusion; the second protrusion is secured to the connecting plate by welding.

[0016] The lubricating oil circuit is specifically composed of an axial hole and a radial hole connected vertically; the axial hole is parallel to the connecting rod and passes through one end of the connecting rod; the radial hole is perpendicular to the connecting rod and passes through the side of the connecting rod.

[0017] To enhance the structural stability of the connection between the connecting rod and the piston mechanism's drive end, a further design is provided: a first, recessed spherical groove is provided on the side of the other end of the connecting rod, which engages with the first convex ball on the piston mechanism's drive end. A second, recessed spherical groove is also provided on the side of the other end of the connecting rod, which engages with the second convex ball on the piston mechanism's drive end; the first and second spherical grooves are arranged opposite each other.

[0018] Since the second spherical groove is the force point driven by the piston mechanism, based on this, further improvements are: the first spherical groove is located at a position facing away from the crank; the second spherical groove is located at a position adjacent to the crank; the diameter of the second spherical groove is larger than that of the first spherical groove.

[0019] The beneficial effects of the present invention are as follows: the present invention adopts a fixed connection method between the crank and the connecting rod, thereby eliminating the gap at the connection between the traditional crank and the connecting rod, so that when the baler is running, the transfer case runs more stably and does not shake; and the driving end of the piston mechanism is closed, and the other end of the connecting rod is inserted into the driving end of the piston mechanism. When the lubricating oil between the connecting rod and the piston mechanism is insufficient, the lubricating oil in the lubricating oil circuit will be replenished in time, so that the present invention can operate for a long time and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 It is the main view of the utility model;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 It is a structural diagram of the utility model;

[0024] In the figure: 1, crank; 2, connecting plate; 3, connecting rod; 4, lubricating oil circuit; 11, spline; 12, first cam; 31, second cam; 32, first spherical groove; 33, second spherical groove; 41, axial hole; 42, radial hole. DETAILED DESCRIPTION

[0025] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0026] like Figure 1-3 As shown, the utility model discloses a baler transmission crank, comprising a crank 1, a connecting plate 2 and a connecting rod 3 connected in sequence. Figure 1 From a perspective, crank 1 is cylindrical, with a spline 11 at its right end, which engages with the sleeve at the transfer case output end. This ensures a stable connection between the transfer case output and crank 1 and prevents slippage. Connecting plate 2 is oblong in shape. The left end of crank 1 passes through the lower end of connecting plate 2, with the portion extending beyond the left side of connecting plate 2 serving as a first protrusion 12. The length of first protrusion 12 is set to 5-8 mm. Crank 1 and connecting plate 2 are secured by welding, with a fillet weld located at the junction of first protrusion 12 and connecting plate 2. The right end of connecting rod 3 passes through the upper end of connecting plate 2, with the portion extending beyond the right side of connecting plate 2 serving as a second protrusion 31. The length of second protrusion 31 is set to 5-8 mm. Connecting rod 3 and connecting plate 2 are secured by welding, with a fillet weld located at the junction of second protrusion 31 and connecting plate 2. This weld placement not only facilitates welding but also reduces deformation at the weld. The left end of connecting rod 3 is rotationally connected to the piston mechanism.

[0027] The crank 1 is parallel to the connecting rod 3 and perpendicular to the connecting plate 2, so that the utility model is in a Z shape.

[0028] A lubricating oil circuit 4 is provided at the right end of the connecting rod 3, which is filled with lubricating oil for lubricating the connecting rod 3 and the piston mechanism. The lubricating oil circuit 4 is composed of an axial hole 41 and a radial hole 42 connected vertically. The axial hole 41 coincides with the axis of the connecting rod 3 and passes through the right end of the connecting rod 3. The radial hole 42 is perpendicular to the connecting rod 3 and passes through the upper side of the connecting rod 3. The right end of the axial hole 41 is the oil inlet, and the upper end of the radial hole 42 is the oil outlet. When the lubricating oil circuit 4 needs to be replenished with lubricating oil, the oil inlet is connected to the oil pipe, and the lubricating oil flows along the oil pipe from the oil inlet into the lubricating oil circuit 4 and flows out from the oil outlet to lubricate the connection between the connecting rod 3 and the piston mechanism.

[0029] To improve the structural stability of the connection between connecting rod 3 and the piston mechanism's drive end, the following design is employed: A first, recessed spherical groove 32 is provided on the side of the other end of connecting rod 3, which engages with the first convex ball on the piston mechanism's drive end. A second, recessed spherical groove 33 is also provided on the side of the other end of connecting rod 3, which engages with the second convex ball on the piston mechanism's drive end. The first and second spherical grooves 32, 33 are arranged opposite each other, with the first spherical groove 32 facing away from the crank 1, and the second spherical groove 33 located adjacent to the crank 1. The first and second spherical grooves 32, 33 are equidistant from the left end of connecting rod 3, allowing the first and second spherical grooves 32 and 33 to engage with the first and second convex balls simultaneously, thereby improving the stability of the connection between connecting rod 3 and the piston mechanism. Both the first and second spherical grooves 32, 33 are of inferior arc shape, enhancing the stability of the convex ball engagement. Moreover, a distance is set between the bottom of the first spherical groove 32 and the bottom of the second spherical groove 33 and the axis of the connecting rod to maintain the structural strength of the connecting rod 3.

[0030] Since the second spherical groove 33 is the force point driven by the piston mechanism, the diameter of the second spherical groove 33 is larger than the first spherical groove 32 to increase the contact area between the connecting rod 3 and the driving end of the piston mechanism when the force is applied, thereby improving the stability of the operation of the utility model.

[0031] The beneficial effects of the present invention are as follows: the present invention adopts a fixed connection method between the crank 1 and the connecting rod 3, which eliminates the gap at the connection between the traditional crank 1 and the connecting rod 3, so that when the baler is running, the transfer case runs more stably and does not shake; and the driving end of the piston mechanism is closed, and the other end of the connecting rod 3 is inserted into the driving end of the piston mechanism. When the lubricating oil between the connecting rod 3 and the piston mechanism is insufficient, the lubricating oil in the lubricating oil circuit 4 will be replenished in time, so that the present invention can operate for a long time and stably.

[0032] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A baler transmission crank, characterized in that: include: A crank (1), one end of which is connected to the output end of the transfer case; A connecting plate (2), one end of which is fixedly connected to the other end of the crank (1); A connecting rod (3), one end of which is fixedly connected to the other end of the connecting plate (2), and the other end of which is rotatably connected to the piston mechanism; The crank (1) is parallel to the connecting rod (3) and perpendicular to the connecting plate (2); The other end of the connecting rod (3) is provided with a lubricating oil passage (4), the interior of which is filled with lubricating oil for lubricating the connecting rod (3) and the piston mechanism.

2. The baler transmission crank according to claim 1, characterized in that: One end of the crank (1) is provided with a spline (11), and the output end of the transfer case is provided with a sleeve for clamping the spline (11).

3. The baler transmission crank according to claim 1, characterized in that: The crank (1) and the connecting plate (2) are connected by welding.

4. The baler transmission crank according to claim 3, characterized in that: The other end of the crank (1) passes through the connecting plate (2), and the portion thereof protruding from the connecting plate (2) is configured as a first protruding shaft (12); The first protruding shaft (12) and the connecting plate (2) are fixed by welding.

5. The baler transmission crank according to claim 1, characterized in that: The connecting rod (3) and the connecting plate (2) are connected by welding.

6. The baler transmission crank according to claim 5, characterized in that: One end of the connecting rod (3) passes through the connecting plate (2), and the portion thereof protruding from the connecting plate (2) is configured as a second protruding shaft (31); The second protruding shaft (31) and the connecting plate (2) are fixed by welding.

7. The baler transmission crank according to claim 1, characterized in that: The oil circuit (4) is composed of an axial hole (41) and a radial hole (42) connected vertically; The axial hole (41) is parallel to the connecting rod (3) and passes through one end of the connecting rod (3); The radial hole (42) is perpendicular to the connecting rod (3) and passes through the side of the connecting rod (3).

8. The baler transmission crank according to claim 1, characterized in that: A first concave spherical groove (32) is provided on the side surface of the other end of the connecting rod (3) and is engaged with the first convex ball at the driving end of the piston mechanism.

9. The baler transmission crank according to claim 8, characterized in that: The side surface of the other end of the connecting rod (3) is also provided with a concave second spherical groove (33) which is engaged with the second convex ball at the driving end of the piston mechanism; The first spherical groove (32) and the second spherical groove (33) are arranged opposite to each other.

10. The baler transmission crank according to claim 9, characterized in that: The first spherical groove (32) is located at a position facing away from the crank (1); The second spherical groove (33) is located adjacent to the crank (1); The diameter of the second spherical groove (33) is larger than that of the first spherical groove (32).

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