Plunger safety wheel device, plunger device and bundling machine

Abstract

The utility model discloses a plunger safety wheel device, a plunger structure and a bundling machine, and the safety wheel device comprises a first roller device which comprises a first mounting shaft and a first wheel body; one end of the first mounting shaft is rotationally connected with the first wheel body, and the other end of the first mounting shaft is used for extending into a first mounting hole of the plunger; the first wheel body is used for making contact with a rail and rolling relative to the rail along with movement of the plunger. Wherein the track is arranged relative to the plunger; the lining structure comprises a cylinder body and a connecting piece, the barrel sleeves the other end of the first mounting shaft and is fixedly connected with the inner side wall of the first mounting hole; the connecting piece connects the barrel and the first mounting shaft in the radial direction of the barrel and the first mounting shaft. According to the plunger structure, the first roller device is additionally arranged on the basis that an original plunger structure is provided with four rollers, in the using process, even if one roller shaft is broken, the whole plunger cannot incline substantially, and normal operation cannot be affected after the roller on any side is broken.

Description

Technical Field

[0001] This utility model relates to the field of baling machine technology, and more specifically, to a plunger safety wheel device, a plunger device, and a baling machine. Background Technology

[0002] The plunger is one of the core components of a baler. Its reciprocating motion pushes the straw into the forming chamber, compressing it into a square bale. Plunger rollers are mounted on the plunger and contact the guide rails on the side wall of the forming chamber, reducing friction during high-pressure reciprocating motion and ensuring smooth operation. Currently, the industry standard uses a four-roller structure, with a connecting rod pulling the plunger back and forth. During use, if one roller shaft breaks, the entire plunger will tilt, causing damage to nearby moving parts. Utility Model Content

[0003] The purpose of this utility model is to provide a plunger safety wheel device, a plunger device, and a baler, which can ensure normal operation even if the roller on either side breaks.

[0004] The embodiments of this utility model are implemented as follows:

[0005] In a first aspect, this application provides a plunger safety wheel device, comprising:

[0006] A first roller device includes a first mounting shaft and a first wheel body; one end of the first mounting shaft is rotatably connected to the first wheel body, and the other end of the first mounting shaft is used to extend into a first mounting hole of a plunger; the first wheel body is used to contact a track and rolls relative to the track as the plunger moves; wherein the track is arranged relative to the plunger;

[0007] A bushing structure includes a cylindrical body and a connecting member; the cylindrical body is sleeved on the other end of the first mounting shaft and is fixedly connected to the inner sidewall of the first mounting hole; the connecting member connects the cylindrical body and the first mounting shaft in a radial direction.

[0008] In a possible implementation, the safety wheel device further includes a fixing plate, which is fixedly mounted on the first mounting shaft; the fixing plate has a protruding structure for engaging with a groove structure corresponding to the plunger.

[0009] In a possible implementation, the safety wheel device further includes a retaining ring; the other end of the first mounting shaft is provided with a retaining ring groove for mounting the retaining ring.

[0010] Secondly, this application also provides a plunger device, including the aforementioned safety wheel device.

[0011] In a possible implementation, the plunger device further includes a plunger and a second roller device; the first roller device and the second roller device are respectively provided on both sides of the plunger, and the sum of the number of the first roller device and the second roller device on each side is not less than three.

[0012] In a possible implementation, the second roller device includes:

[0013] Second mounting shaft, multiple second mounting shafts with parallel axes, and the axis of each second mounting shaft is parallel to the axis of the first mounting shaft;

[0014] The second wheel is rotatably connected to one end of the corresponding second mounting shaft, and the other end of the second mounting shaft is fixedly connected to the plunger.

[0015] In a possible implementation, the plunger device further includes a track assembly; the track assembly includes two tracks disposed on both sides of the plunger, with each of the first wheel and the second wheel contacting the corresponding track.

[0016] In a possible implementation, the plunger device further includes a connecting rod structure connected to a connecting structure at one end of the plunger.

[0017] Thirdly, this application also provides a baling machine, including the aforementioned plunger device.

[0018] In a possible implementation, the baler further includes a driver for driving the plunger to move.

[0019] The beneficial effects of this utility model embodiment are:

[0020] By adding a first roller device to the existing plunger structure with four rollers, even if one roller shaft breaks during use, the entire plunger will not tilt significantly, and normal operation will not be affected even if a roller breaks on either side. Furthermore, the entire safety wheel device, through its fixation with the first mounting hole of the plunger, axially fixes the first mounting shaft to the plunger, preventing the first wheel from detaching from the plunger under force, limiting the radial displacement of the first mounting shaft relative to the cylinder, and ensuring the stability of the first wheel's axis during rolling. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a side view of the plunger device according to an embodiment of the present utility model;

[0023] Figure 2 This is a top view of the plunger device according to an embodiment of the present utility model;

[0024] Figure 3 This is a front view of the plunger safety wheel device according to an embodiment of the present invention;

[0025] Figure 4 This is a cross-sectional view of the plunger safety wheel device along the axial direction according to an embodiment of the present utility model;

[0026] Figure 5 This is a side view of the plunger safety wheel device according to an embodiment of the present invention.

[0027] Icons: 1. First roller assembly; 101. First mounting shaft; 1011. Snap ring groove; 102. First wheel body; 2. Plunger; 201. First mounting hole; 3. Track; 4. Bushing structure; 401. Cylinder; 402. Connector; 5. Fixing plate; 501. Protrusion structure; 6. Snap ring; 7. Second roller assembly; 8. Linkage structure; 9. Pin. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] First Embodiment

[0035] refer to Figures 3 to 5 This application provides a plunger safety wheel device, comprising: a first roller device 1 and a bushing structure 4. The first roller device 1 includes a first mounting shaft 101 and a first wheel body 102; one end of the first mounting shaft 101 is rotatably connected to the first wheel body 102, and the other end of the first mounting shaft 101 is used to extend into the first mounting hole 201 of the plunger 2; the first wheel body 102 is used to contact the track 3 and rolls relative to the track 3 as the plunger 2 moves; the track 3 is disposed relative to the plunger 2. The first wheel body 102 and the first mounting shaft 101 can be rotatably connected by bearings. In addition, the first mounting shaft 101 can be fixedly connected to the plunger 2 by extending into the plunger 2, so that the first wheel body 102 can move synchronously with the plunger 2.

[0036] The bushing structure 4 includes a cylindrical body 401 and a connecting member 402. The cylindrical body 401 is sleeved on the other end of the first mounting shaft 101 and is fixedly connected to the inner wall of the first mounting hole 201. The connecting member 402 connects the cylindrical body 401 and the first mounting shaft 101 in the radial direction. The cylindrical body 401 of the bushing structure 4 is sleeved on the end of the first mounting shaft 101. By fixing it to the first mounting hole 201 of the plunger 2 (e.g., with an interference fit), the first mounting shaft 101 is axially fixed to the plunger 2, preventing the first wheel body 102 from disengaging from the plunger 2 when under force. The connecting member 402 (e.g., an internal hexagon screw) is inserted into the cylindrical body 402 and the first mounting shaft 101 in the radial direction and is completely recessed into the first mounting hole 201 for welding, thereby locking the two together, limiting the radial displacement of the first mounting shaft 101 relative to the cylindrical body 401, ensuring the stability of the axis of the first wheel body 102 when rolling, and avoiding shaking.

[0037] In conjunction with the above embodiments, a first roller device 1 is added to the original plunger structure with four rollers. During use, even if one roller shaft breaks, the entire plunger 2 will not tilt significantly, and normal operation will not be affected even if a roller breaks on either side. Furthermore, the entire safety wheel device, through fixing to the first mounting hole 201 of the plunger 2, axially fixes the first mounting shaft 101 to the plunger 2, preventing the first wheel body 102 from detaching from the plunger 2 under force, limiting the radial displacement of the first mounting shaft 101 relative to the cylinder 401, and ensuring the axial stability of the first wheel body 102 during rolling.

[0038] In some embodiments, the safety wheel device further includes a fixing plate 5, which is fixedly mounted on the first mounting shaft 101. A protrusion 501 is formed on the fixing plate 5 for engaging with a corresponding groove structure on the plunger 2. The fixing plate 5 is also located between the bushing structure 4 and the first wheel body 102. Through the protrusion 501 on the fixing plate 5, a convex-concave fit is achieved between the fixing plate 5 and the corresponding groove structure on the plunger 2, thereby preventing radial rotation of the plunger 2.

[0039] In some embodiments, the safety wheel device further includes a retaining ring 6; a retaining ring groove 1011 is provided at the shoulder position of the other end of the first mounting shaft 101, and a retaining ring 6 is installed at the retaining ring groove 1011, thereby fixing the axial position of the first mounting shaft 101. Combined with the connecting piece 402 used, the first mounting shaft 101 and the cylinder 401 can be radially positioned and installed, thereby achieving a stable installation of the first mounting shaft 101 and the bushing structure 4.

[0040] Second Embodiment

[0041] refer to Figure 1 and Figure 2This application provides a plunger device including the safety wheel device described above. By adding a first roller device 1 to the existing plunger structure with four rollers, even if one roller shaft breaks during use, the entire plunger 2 will not tilt significantly, ensuring normal operation is not affected even if a roller breaks on either side. Furthermore, the entire safety wheel device, through its fixation to the first mounting hole 201 of the plunger 2, axially fixes the first mounting shaft 101 to the plunger 2, preventing the first wheel body 102 from detaching from the plunger 2 under force, limiting radial displacement of the first mounting shaft 102 relative to the cylinder 401, and ensuring axial stability of the first wheel body 102 during rolling.

[0042] In some embodiments, the plunger device further includes a plunger 2 and a second roller device 7; a first roller device 1 and a second roller device 7 are respectively provided on both sides of the plunger 2, and the sum of the number of first roller devices 1 and second roller devices 7 on each side is not less than three. Theoretically, the more first roller devices 1 and second roller devices 7 on each side of the plunger 2, the more reliable the plunger 2 will be. However, considering the overall installation space and cost, the sum of the number of first roller devices 1 and second roller devices 7 on each side of the plunger 2 is three, that is, one first roller device 1 and two second roller devices 7.

[0043] In some embodiments, the second roller device 7 includes a first mounting shaft and a second wheel body. The axes of the plurality of second mounting shafts are parallel, and the axis of each second mounting shaft is parallel to the axis of the first mounting shaft 101. The second wheel body is rotatably connected to one end of the corresponding second mounting shaft, and the other end of the second mounting shaft is fixedly connected to the plunger 2. This ensures smooth rotation of the plurality of first wheel bodies 102 and the second wheel body.

[0044] In some embodiments, the plunger device further includes a track assembly; the track assembly includes two tracks 3, respectively disposed on both sides of the plunger 2, with each first wheel 102 and second wheel in contact with the corresponding track 3. When the plunger 2 reciprocates, each first wheel 102 and second wheel rolls on the corresponding track 3.

[0045] In some embodiments, the plunger device further includes a connecting rod structure 8, which is connected to a connecting structure at one end of the plunger 2. The connecting structure is, for example, a pin 9. The connecting rod in the connecting rod structure is hinged to one end of the plunger 2 via the pin 9. A driver moves the connecting rod, thereby causing the plunger 2 to move.

[0046] Third Embodiment

[0047] This application provides a baling machine including the plunger device described above. The baling machine also includes a driver for moving the plunger 2. By adding a first roller device 1 to the existing plunger structure with four rollers, even if one roller shaft breaks during use, the entire plunger 2 will not tilt significantly, ensuring normal operation is not affected even if a roller breaks on either side. Furthermore, the entire safety wheel device, through fixing to the first mounting hole 201 of the plunger 2, axially fixes the first mounting shaft 101 to the plunger 2, preventing the first wheel body 102 from detaching from the plunger 2 under force, limiting the radial displacement of the first mounting shaft 101 relative to the cylinder 401, and ensuring the axial stability of the first wheel body 102 during rolling.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plunger safety wheel device, characterized in that, include: A first roller device includes a first mounting shaft and a first wheel body; one end of the first mounting shaft is rotatably connected to the first wheel body, and the other end of the first mounting shaft is used to extend into a first mounting hole of a plunger; the first wheel body is used to contact a track and rolls relative to the track as the plunger moves; wherein the track is arranged relative to the plunger; A bushing structure includes a cylindrical body and a connecting member; the cylindrical body is sleeved on the other end of the first mounting shaft and is fixedly connected to the inner sidewall of the first mounting hole; the connecting member connects the cylindrical body and the first mounting shaft in a radial direction.

2. The plunger safety wheel device according to claim 1, characterized in that, The safety wheel device also includes a fixing plate, which is fixedly mounted on the first mounting shaft; the fixing plate has a protruding structure for engaging with the groove structure corresponding to the plunger.

3. The plunger safety wheel device according to claim 1, characterized in that, The safety wheel device also includes a retaining ring; the other end of the first mounting shaft is provided with a retaining ring groove for mounting the retaining ring.

4. A plunger device, characterized in that, Includes the safety wheel device as described in any one of claims 1 to 3.

5. The plunger device according to claim 4, characterized in that, The plunger device further includes a plunger and a second roller device; the first roller device and the second roller device are respectively provided on both sides of the plunger, and the sum of the number of the first roller device and the second roller device on each side is not less than three.

6. The plunger device according to claim 5, characterized in that, The second roller device includes: Second mounting shaft, multiple second mounting shafts with parallel axes, and the axis of each second mounting shaft is parallel to the axis of the first mounting shaft; The second wheel is rotatably connected to one end of the corresponding second mounting shaft, and the other end of the second mounting shaft is fixedly connected to the plunger.

7. The plunger device according to claim 6, characterized in that, The plunger device further includes a track assembly; the track assembly includes two tracks, respectively disposed on both sides of the plunger, with each of the first wheel and the second wheel in contact with the corresponding track.

8. The plunger device according to claim 4, characterized in that, The plunger device also includes a connecting rod structure, which is connected to a connecting structure at one end of the plunger.

9. A baling machine, characterized in that, Includes the plunger device as described in any one of claims 4 to 8.

10. The baler according to claim 9, characterized in that, The baler also includes a driver for driving the plunger to move.

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