Power transmission structure with protection mechanism for four-rope bundling machine

Abstract

The utility model discloses a power transmission structure with a protection mechanism for a four-rope bundling machine, which comprises a power main shaft, a shearing disc, a shearing disc hub, a transmission chain wheel I and a transmission chain wheel II, and the shearing disc hub is sleeved on one end part of the power main shaft and is in key connection with the power main shaft; the shearing disc is fixed on the outer circumferential surface of the shearing disc hub; the transmission chain wheel I is sleeved on the power main shaft and a gap is formed between the transmission chain wheel I and the power main shaft; the transmission chain wheel II sleeves the other end part of the power main shaft, a gap is formed between the transmission chain wheel II and the power main shaft, and the transmission chain wheel II is detachably connected with the transmission chain wheel I; the shearing disc is connected with the chain wheel surface of the transmission chain wheel I through a shearing bolt structure. The power main shaft serves as a power output shaft, the shearing disc rotates along with the power main shaft, the transmission chain wheel I and the transmission chain wheel II can rotate along with the power main shaft only by being driven by the shearing disc, when overload occurs, a shearing bolt structure on the shearing disc can be broken, the shearing disc and the transmission chain wheel I are cut off, and the shearing disc and the transmission chain wheel II can be driven to rotate along with the power main shaft. The power main shaft idles and does not transmit power any more, and the gearbox is prevented from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of balers, and in particular relates to a power transmission structure with a protection mechanism for a four-rope baler. Background Art

[0002] Balers have become popular in the process of agricultural straw recycling. Usually, the power source of each functional mechanism of the baler is to receive the power of the tractor through the power receiving shaft. The power receiving shaft transmits the power to the gearbox, and the gearbox distributes the power. The power part transmitted to the fork mechanism and the picking mechanism is usually transmitted directly by the sprocket chain. However, the fork and picking process are prone to blockage. Since the power is directly transmitted, it is easy to cause overload and damage the gearbox. Utility Model Content

[0003] The utility model provides a power transmission structure with a protection mechanism for a four-rope baler, which is used to solve the overload problem and directly disconnect the power transmission when overload occurs.

[0004] The technical solution adopted by the utility model is:

[0005] A power transmission structure with a protective mechanism for a four-lane baler includes a power main shaft, a shear disc, a shear disc hub, a transmission sprocket I and a transmission sprocket II. The shear disc hub is sleeved on one end of the power main shaft and connected to the power main shaft key; the shear disc is fixed on the outer circumferential surface of the shear disc hub, the transmission sprocket I is sleeved on the power main shaft and has a gap between the power main shaft; the transmission sprocket II is sleeved on the other end of the power main shaft and has a gap between the power main shaft, and the transmission sprocket II is detachably connected to the transmission sprocket I; the sprocket surfaces of the shear disc and the transmission sprocket I are connected by a shear bolt structure. The power main shaft serves as the output shaft of power, the shear disc rotates with the power main shaft, and the transmission sprockets I and II can rotate with the power main shaft only when driven by the shear disc. When overload occurs, the shear bolt structure on the shear disc will break, cutting off the shear disc and the transmission sprocket I, so that the power main shaft idles without power transmission, thereby avoiding damage to the gearbox.

[0006] As a preferred solution of the utility model, at least one shear hole I is provided on the shear disk, and a corresponding shear hole II is provided on the sprocket surface of the transmission sprocket I. The shear holes I and II correspond to each other to form a group of shear holes, and a shear bolt structure is installed in the group of shear holes; the shear bolt structure includes a shear bolt, a shear sleeve and a nut; the shear sleeve is inserted into the shear hole I and the shear hole II, and the shear bolt is threadedly connected with the nut after passing through the shear sleeve. By replacing the shear sleeve, different types of shear bolts can be used, and they can be replaced autonomously according to the demand for shear force.

[0007] As a preferred solution of the utility model, at least two shear holes I are provided on the shear disc, and the shear bolt structure is installed in only one group of shear holes. When a shear fracture occurs and the current shear hole is damaged, the shear bolt structure can be installed again using the multiple shear holes, thereby improving the use efficiency of the shear disc and reducing maintenance costs.

[0008] As a preferred solution of the utility model, an internal spline I is provided on the inner wall of the shear disc hub, and an external spline I is provided on the outer wall of the power spindle; a gasket I and a retaining ring I are sleeved on the outer end of the shear disc hub of the power spindle, and the retaining ring I is provided with an internal spline I.

[0009] As a preferred solution of the utility model, the transmission sprocket I is welded on the transmission sleeve, the transmission sleeve is sleeved on the power spindle, the side wall of the transmission sleeve is connected to the transmission sprocket II by fixing bolts, and the transmission sleeve does not directly contact the power spindle.

[0010] As a preferred solution of the utility model, the end of the transmission sprocket II away from the transmission sleeve is welded to the side wall of the positioning sleeve, and the positioning sleeve is sleeved on the power main shaft and there is a gap between the power main shaft. The power of the transmission sprocket II is transmitted by the transmission sleeve and does not actively rotate with the power main shaft.

[0011] As a preferred solution of the utility model, a retaining ring II is installed at the end of the positioning sleeve away from the transmission sleeve, the retaining ring II is provided with an internal spline II, the power spindle is provided with an external spline II, and the retaining ring II is key-connected with the power spindle. For the normal operation structure, in order to ensure that there is no slipping and idling, the transmission sprocket II is key-connected with the power spindle through the positioning sleeve and rotates with the power spindle.

[0012] The utility model transmits the power of the power main shaft to the transmission sprocket I and the transmission sprocket II through the shearing disk and the shearing bolt. When an overload such as material blockage occurs, the shearing bolt is broken, and the power transmission between the power main shaft and the transmission sprocket is disconnected, thereby avoiding damage to the gearbox and improving the power performance and service life of the machine. The shearing force of the utility model can be replaced and adjusted according to the shearing sleeve and the shearing bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 for Figure 1 Sectional view along AA direction.

[0016] Figure 3 for Figure 1 Cross-sectional view along the BB axis. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example:

[0019] A power transmission structure with a protection mechanism for a four-lane baler, such as Figure 1 As shown, it includes a power spindle 1, a shear disc 2, a shear disc hub 3, a drive sprocket I4 and a drive sprocket II5, and the shear disc hub 3 is sleeved on one end of the power spindle 1 and is key-connected with the power spindle 1;

[0020] Specifically, an inner spline I is provided on the inner wall of the shear disc hub 3, and an outer spline I is provided on the outer wall of the power main shaft 1; a washer I and a retaining ring I are sleeved on the outer end of the shear disc hub 3 of the power main shaft 1, and the retaining ring I is provided with an inner spline I.

[0021] like Figure 2 As shown, the shear disc 2 is welded and fixed on the outer circumference of the shear disc hub 3, the transmission sprocket I4 is welded on the transmission sleeve 9, the transmission sleeve 9 is sleeved on the power main shaft and there is a gap between the power main shaft 1; the transmission sprocket II5 is sleeved on the other end of the power main shaft 1 and there is a gap between the power main shaft 1, and the transmission sprocket II5 is detachably connected to the transmission sprocket I4; specifically, the side wall of the transmission sleeve 9 is connected to the transmission sprocket II5 by fixing bolts, and the end of the transmission sprocket II5 away from the transmission sleeve 9 is welded to the side wall of the positioning sleeve 10, and the positioning sleeve 10 is sleeved on the power main shaft and there is a gap between the power main shaft. The power of the transmission sprocket II is transmitted by the transmission sleeve, and it does not actively rotate with the power main shaft.

[0022] At least one shearing hole I is provided on the shearing disk 2. In this embodiment, three are taken as an example. The sprocket surface of the transmission sprocket I is provided with corresponding shearing holes II. The shearing holes I and the shearing holes II correspond to each other to form a group of shearing holes. The shearing bolt structure is installed only in one group of shearing holes. Figure 3As shown, the shear bolt structure includes a shear bolt 6, a shear sleeve 7 and a nut 8; the shear sleeve 7 is inserted into the shear hole I and the shear hole II, and the shear bolt passes through the shear sleeve 7 and is threadedly connected with the nut 8. By replacing the shear sleeve, different types of shear bolts can be used, and they can be replaced autonomously according to the demand for shear force, that is, the shear disk 2 is connected to the sprocket surface of the transmission sprocket I4 through the shear bolt structure.

[0023] The power spindle serves as the output shaft of power, and the shear disk rotates with the power spindle, while the drive sprocket I and the drive sprocket II need to rely on the shear disk to rotate with the power spindle. When overload occurs, the shear bolt structure on the shear disk will break, cutting off the shear disk and the drive sprocket I, causing the power spindle to idle without power transmission, thus avoiding damage to the gearbox.

[0024] When a shear fracture occurs and the current shear hole is damaged, the shear bolt structure can be installed again using the multi-set shear holes, thereby improving the use efficiency of the shear disk and reducing maintenance costs.

[0025] For the normal operation of the structure, in order to ensure that there is no slipping and idling, a retaining ring II is installed at the end of the positioning sleeve 10 away from the transmission sleeve, the retaining ring II is provided with an internal spline II, the power spindle is provided with an external spline II, the retaining ring II and the power spindle are key-connected, and the transmission sprocket II is key-connected to the power spindle through the positioning sleeve and rotates with the power spindle.

[0026] In the description of this specification, the description of reference terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A power transmission structure with a protection mechanism for a four-lane baler, characterized in that: The invention comprises a power main shaft (1), a shearing disc (2), a shearing disc hub (3), a transmission sprocket I (4) and a transmission sprocket II (5); the shearing disc hub (3) is sleeved on one end of the power main shaft (1) and is key-connected to the power main shaft (1); the shearing disc (2) is fixed on the outer circumferential surface of the shearing disc hub (3); the transmission sprocket I (4) is sleeved on the power main shaft (1) and has a gap with the power main shaft (1); the transmission sprocket II (5) is sleeved on the other end of the power main shaft (1) and has a gap with the power main shaft (1), and the transmission sprocket II (5) is detachably connected to the transmission sprocket I (4); the sprocket surfaces of the shearing disc (2) and the transmission sprocket I (4) are connected by a shearing bolt structure.

2. The power transmission structure with a protection mechanism for a four-lane baler according to claim 1 is characterized in that: At least one shearing hole I is provided on the shearing disk (2), and a corresponding shearing hole II is provided on the sprocket surface of the transmission sprocket I. The shearing holes I and the shearing holes II correspond to each other to form a group of shearing holes, and a shearing bolt structure is installed in the group of shearing holes; the shearing bolt structure comprises a shearing bolt (6), a shearing sleeve (7) and a nut (8); the shearing sleeve (7) is inserted into the shearing hole I and the shearing hole II, and the shearing bolt passes through the shearing sleeve (7) and is threadedly connected with the nut (8).

3. The power transmission structure with a protection mechanism for a four-lane baler according to claim 2 is characterized in that: At least two shear holes I are provided on the shear plate (2), and the shear bolt structure is installed in only one set of shear holes.

4. The power transmission structure with a protection mechanism for a four-lane baler according to claim 2 or 3, characterized in that: An inner spline I is provided on the inner wall of the shear disk hub (3), and an outer spline I is provided on the outer wall of the power main shaft (1); a washer I and a retaining ring I are sleeved on the outer end of the shear disk hub (3) of the power main shaft (1), and the retaining ring I is provided with an inner spline I.

5. The power transmission structure with a protection mechanism for a four-lane baler according to claim 4, characterized in that: The transmission sprocket I (4) is welded on the transmission sleeve (9), the transmission sleeve (9) is sleeved on the power main shaft, and the side wall of the transmission sleeve (9) is connected to the transmission sprocket II (5) by fixing bolts.

6. The power transmission structure with a protection mechanism for a four-lane baler according to claim 5, characterized in that: The end of the transmission sprocket II (5) away from the transmission sleeve (9) is welded to the side wall of the positioning sleeve (10), and the positioning sleeve (10) is sleeved on the power main shaft and there is a gap between the positioning sleeve and the power main shaft.

7. The power transmission structure with a protection mechanism for a four-lane baler according to claim 6, characterized in that: A retaining ring II is installed at the end of the positioning sleeve (10) away from the transmission sleeve, the retaining ring II is provided with an internal spline II, the power main shaft is provided with an external spline II, and the retaining ring II and the power main shaft are key-connected.

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