Belt tightness adjusting structure for branch crusher

Abstract

The utility model discloses a belt tightness adjusting structure for a wood chipper, which comprises a wood chipper body and a driving mechanism hinged to one side of the wood chipper body, a group of belt pulleys are arranged on the driving mechanism and the wood chipper body, a belt for transmission is arranged on the group of belt pulleys, and the driving mechanism is hinged to the driving mechanism. After the driving mechanism rotates by a certain angle relative to the branch smashing machine body, the distance between the two belt wheels changes along with changes of the angle, and a limiting piece for fixing the driving mechanism to the branch smashing machine body is arranged between the branch smashing machine body and the driving mechanism. Compared with the prior art, the belt adjusting device has the advantages that the adjusting process is achieved by adjusting the distance between the two belt wheels, the belt is not subjected to external pressure or friction force, abrasion to the belt is greatly reduced, and the service life of the belt is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a belt tension adjustment structure for a branch chipper. Background Art

[0002] Gasoline engines are used as power sources, often through pulleys and V-belts to drive the cutting disc shaft to rotate and achieve branch shredding. Since the V-belt is a product made of rubber and hemp rope, it will be stretched after long-term use. If the stretched V-belt is not adjusted in time, the cutting disc will be unable to cut or the V-belt will slip directly during the use of the machine, causing the disc to be stuck by wood chips and unable to work normally. In order to solve the above problems, some branch shredders with adjustable belt tension have appeared on the market.

[0003] For example, the Chinese utility model patent "A branch shredder with 360° discharge" with patent announcement number CN208113418U includes a shredder mechanism, on which a belt tensioning adjustment device is installed. The belt tensioning adjustment device includes a tensioning arm rotatably connected to the shredder mechanism, one end of the tensioning arm is equipped with a tensioning wheel that presses against the transmission belt, and the other end is connected to an adjusting screw. An adjusting device protective cover is installed on the outside of the belt tensioning adjustment device.

[0004] In the above scheme, the tensioning wheel is controlled by adjusting the screw to press the belt to adjust the belt tightness. The tensioning wheel is always in contact with the belt, which will cause friction, wear the belt, and shorten the service life of the belt. Utility Model Content

[0005] The utility model aims to solve the problem that friction will occur when the tension wheel is always in contact with the belt by controlling the adjustment screw hole in the belt tension adjustment structure for the branch shredder through the tension wheel pressing the belt. The technical problem to be solved by the utility model is to provide a belt tension adjustment structure for the branch shredder to solve the above problem.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows: it includes a branch shredder body, and also includes a driving mechanism hinged on one side of the branch shredder body, a group of pulleys are provided on the driving mechanism and the branch shredder body, a belt for transmission is provided on the group of pulleys, after the driving mechanism rotates a certain angle relative to the branch shredder body, the distance between the two pulleys changes with the change of the angle, and a limiting member for fixing the driving mechanism on the branch shredder body is provided between the branch shredder body and the driving mechanism, the driving mechanism includes a power seat plate and an engine arranged on the power seat plate, and the bottom of both sides of the power seat plate has The flange extends downward, and support force plates are provided on both sides of the branch shredder body. The power seat plate covers the two support force plates of the branch shredder body and the support force plates are in contact with the flanges. The limiter includes a connecting ear with an arc-shaped bar hole, and a fastening bolt that can be inserted into the arc-shaped bar hole and cooperate with the arc-shaped bar hole. The branch shredder body and the driving mechanism have abutment parts that abut each other, the connecting ear is arranged on the abutment part of the driving mechanism, and a connecting hole that cooperates with the fastening bolt is provided on the support force plate. The fastening bolt passes through the arc-shaped bar hole and the connecting hole in turn and fixes the driving mechanism to the branch shredder body through a nut.

[0007] A further preferred solution of the utility model is that there are two limit members, which are respectively arranged on both sides of the branch chipper body and the driving mechanism.

[0008] A further preferred solution of the utility model is that the flange is the abutment portion of the drive mechanism, and the support force plate is the abutment portion of the branch shredder body.

[0009] A further preferred solution of the utility model is: a support member is provided between the shredder body and the driving mechanism, which can lift the driving mechanism to change the distance between the two pulleys. The support member includes a support platform and an adjustment column. The support platform is fixedly connected to the shredder body. The adjustment column is provided on the support platform and the distance between the two pulleys can be changed by adjusting the adjustment column.

[0010] A further preferred solution of the utility model is: the adjusting column is a top screw bolt, the support platform is provided with a through hole for installing the top screw bolt, and the top screw bolt is sleeved with two nuts which are respectively clamped on the top and bottom surfaces of the support platform and fix the top screw bolt to the support platform.

[0011] A further preferred solution of the utility model is that the support member is a telescopic cylinder.

[0012] A further preferred solution of the utility model is: a hinge seat is provided on one side of the power seat plate, and a hinge ear matching with the hinge seat is provided on the branch shredder body, and the hinge ear is inserted into the hinge seat and hinged through a hinge shaft.

[0013] A further preferred solution of the utility model is: a first adjustment notch is provided on the power base plate, and a second concave adjustment notch is provided on the branch chipper body. A further preferred solution of the utility model is:

[0014] Compared with the prior art, the utility model has the following advantages: the driving mechanism is hinged to the shredder frame, a group of pulleys driven by belts are provided on the driving mechanism and the shredder body; after the driving mechanism rotates a certain angle relative to the shredder body, the distance between the two pulleys changes with the angle, and the driving mechanism is fixed to the shredder body by a limiter, thereby realizing the adjustment of the belt tightness. Compared with the prior art in which the belt tightness is adjusted by controlling the tensioning wheel to press the belt by adjusting the screw, the adjustment process of this scheme is realized by adjusting the distance between the two pulleys, and the belt will not be subjected to external pressure or friction, thereby greatly reducing the wear on the belt and extending the service life of the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the utility model;

[0017] Figure 2 This is the preferred embodiment of the utility model Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 This is the preferred embodiment of the utility model Figure 1 A partial enlarged view of point B in the middle;

[0019] Figure 4 This is the preferred embodiment of the utility model Figure 1 A partial enlarged view of point C in the middle.

[0020] In the figure: 1. branch chipper body; 11. support plate; 12. first adjustment notch; 13. connecting hole; 2. driving mechanism; 21. power base plate; 211. flange; 212. second adjustment notch; 22. engine; 3. pulley; 4. belt; 5. limiter; 51. connecting ear; 52. arc-shaped strip hole; 53. fastening bolt; 6. support member; 61. support platform; 62. adjustment column; 63. through hole; 7. cutting disc; 8. installation chamber. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0022] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0023] This embodiment mainly describes the belt tension adjustment structure for a branch chipper, as follows:

[0024] like Figures 1 to 4 As shown, the belt tension adjustment comprises a shredder body 1 and a driving mechanism 2 hinged on one side of the shredder body 1, the driving mechanism 2 is used to provide power for the shredder, and the hinge method can be hinged by a rotating shaft or by a hinge seat and a cross ear. A group of pulleys 3 are provided on the driving mechanism 2 and the shredder body 1, and a belt 4 for transmission is provided on the group of pulleys 3. After the driving mechanism 2 rotates a certain angle relative to the shredder body 1, the distance between the two pulleys 3 changes with the change of the angle, and a limiting member 5 is provided between the shredder body 1 and the driving mechanism 2 to fix the driving mechanism 2 on the shredder body 1. When the shredder is used for a long time and the belt 4 is stretched, the driving mechanism 2 rotates around the hinge of the shredder body. During the rotation of the driving mechanism 2, the distance between the two pulleys 3 changes with the opening and closing angle of the shredder body 1 and the driving mechanism 2, so as to adjust the tightness of the belt 4. When the driving mechanism 2 rotates to the point where the belt 4 is tightened, it is locked by the limiting member 5. Tightening the belt 4 will increase the friction between the belt 4 and the pulley 3, and the belt 4 will not slip during transmission, thereby reducing the wear on the belt 4. Compared with the existing scheme, the adjustment process of this scheme is achieved by adjusting the distance between the two pulleys 3. The belt 4 will not be subjected to external pressure or friction, which greatly reduces the wear on the belt 4 and extends the service life of the belt 4.

[0025] Specifically, the limiting member 5 includes a connecting ear 51 with an arc-shaped bar hole 52, and a fastening bolt 53 that can be inserted into the arc-shaped bar hole 52 and cooperate with the arc-shaped bar hole 52. The shredder body 1 and the driving mechanism 2 have abutment parts that abut against each other. The connecting ear 51 is arranged on the abutment part of the driving mechanism 2. The supporting force plate 11 is provided with a connecting hole 13 that cooperates with the fastening bolt 53. The fastening bolt 53 passes through the arc-shaped bar hole 52 and the connecting hole 13 in turn and fixes the driving mechanism 2 to the shredder body 1 through a nut. When the driving mechanism 2 is around the shredder body 1, When the machine body rotates, loosen the nut on the fastening bolt 53, and the fastening bolt 53 rotates in the arc-shaped bar hole 52 as the driving mechanism 2 rotates. The setting of the arc-shaped bar hole 52 guides the driving mechanism 2 and also plays a limiting role to ensure that the driving mechanism 2 rotates within a preset angle range. There is at least one limiter 5, and it is preferably arranged on the side away from the hinge between the shredder body 1 and the driving mechanism 2. When there are two or an even number of limiters 5, the limiters 5 are respectively arranged on both sides of the shredder body 1 and the driving mechanism 2 to improve the stability of the limiter 5.

[0026] Specifically, the driving mechanism 2 includes a power base plate 21 and an engine 22 arranged on the power base plate 21. The power base plate 21 is hinged to the shredder body 1. Specifically, a hinge seat is provided on one side of the power base plate 21, and the shredder body 1 is provided with a hinge ear that cooperates with the hinge seat. The hinge ear is inserted into the hinge seat and hinged through a hinge shaft, or the shredder body 1 is provided with an axial hole, and a pin is provided in the axial hole. The power base plate 21 has a connecting ring that can be sleeved on the pin to rotatably connect the power base plate 21 to the shredder frame. The bottom of both sides of the power base plate 21 has flanges 211 extending downwards, and the two sides of the shredder body 1 have support plates 11. The power base plate 21 covers the two support plates 11 of the shredder body 1, and the support plates 11 are in contact with the flanges 211. The flanges 211 are the contact parts of the drive mechanism 2, and the support plates 11 are the contact parts of the shredder body 1. The two contact parts are arranged to facilitate the fixed connection between the drive mechanism 2 and the shredder body 1, and to support the drive mechanism 2. The output end of the engine 22 is fixedly connected to one of the pulleys 3 in a group of pulleys 3. The shredder body 1 is provided with a cutter disc 7 for cutting branches, and the cutter disc 7 is fixedly connected to another pulley 3 in a group of pulleys 3.

[0027] Specifically, a support member 6 is provided between the shredder body 1 and the power base plate 21 of the driving mechanism 2, which can lift the driving mechanism 2 to change the distance between the two pulleys 3. The support member 6 includes a support platform 61 and an adjustment column 62. The support platform 61 is fixedly connected to the shredder body 1. The fixed connection between the support platform 61 and the shredder body 1 can be connected by bolts and nuts, welded or integrally formed. The adjustment column 62 is provided on the support platform 61 and can be adjusted to change the distance between the power base plate 21 and the engine 22. Relative to the opening and closing angle of the shredder body 1, the spacing between the two pulleys 3 is changed. When in use, the adjusting column 62 is adjusted to move upward or downward relative to the support platform 61, and the top of the adjusting column 62 pushes up the power base plate 21 of the driving mechanism 2. After the power base plate 21 and the engine 22 are driven to flip around the hinge with the shredder body 1 until the belt 4 is tightened, the adjusting column 62 is fixed, and the adjusting column 62 and the support platform 61 have a supporting effect on the power base plate 21 and the engine 22 provided on the power base plate 21.

[0028] Specifically, the adjusting column 62 is a top screw bolt, and the support platform 61 is provided with a through hole 63 for installing the top screw bolt. The top screw bolt is sleeved with two nuts that are respectively clamped on the top and bottom surfaces of the support platform 61 and fix the top screw bolt to the support platform 61. The support member 6 can also be a telescopic cylinder, one end of which is fixedly connected to the frame of the branch chipper, and the telescopic rod of the telescopic cylinder rests on the top of the power seat plate 21. The power seat plate 21 and the engine 22 can be driven to rotate around the hinge by the telescopic cylinder, and are fixed and limited by the limit member 5.

[0029] After the power seat plate 21 is covered on the two supporting force plates 11, the power seat plate 21 and the shredder body 1 form an installation room 8 with space, the support platform 61 and the adjustment column 62, or the telescopic cylinder is located in the installation room 8, and a first adjustment notch 12 is provided on the power seat plate 21, and a concave second adjustment notch 212 is provided on the shredder body 1. The first adjustment notch 12 and the second adjustment notch 212 correspond to each other and are located on one side of the support platform 61 and the adjustment column 62, so that the hand can adjust from the first adjustment notch 12 and the second adjustment notch 212 conveniently.

[0030] When the belt 4 needs to be tightened, loosen the nuts of the fastening bolts 53 on both sides of the power seat plate 21, and by adjusting the adjusting column 62 to move upward or downward relative to the support platform 61, the top of the adjusting column 62 pushes the power seat plate 21 upward, thereby driving the power seat plate 21 and the engine 22 to rotate around the hinge with the branch shredder body 1, so that the distance between the two pulleys 3 changes with the rotation angle of the power seat plate 21 and the engine 22 relative to the branch shredder body 1. After the power seat plate drives the engine 22 to flip around the hinge to the state where the belt 4 is tightened, fix the adjusting column 62, and tighten the nuts of the fastening bolts 53 on both sides of the power seat plate 21 to fix the power seat plate 21.

[0031] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0032] The belt tension adjustment structure for the branch chipper provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A belt tension adjustment structure for a branch chipper, comprising a branch chipper body, characterized in that: The invention also includes a driving mechanism hinged on one side of the shredder body, a group of pulleys are provided on the driving mechanism and the shredder body, a belt for transmission is provided on the group of pulleys, after the driving mechanism rotates a certain angle relative to the shredder body, the distance between the two pulleys changes with the change of the angle, and a limiting member for fixing the driving mechanism on the shredder body is provided between the shredder body and the driving mechanism, the driving mechanism includes a power seat plate and an engine provided on the power seat plate, the bottom of both sides of the power seat plate have flanges extending downward, and the shredder body There are supporting force plates on both sides, the power seat plate covers the two supporting force plates of the shredder body and the supporting force plates are in contact with the flanges, the limiting part includes a connecting ear with an arc-shaped bar hole, and a fastening bolt that can be inserted into the arc-shaped bar hole and cooperate with the arc-shaped bar hole, the shredder body and the driving mechanism have abutting parts that abut against each other, the connecting ear is arranged on the abutting part of the driving mechanism, and a connecting hole that cooperates with the fastening bolt is provided on the supporting force plate, and the fastening bolt passes through the arc-shaped bar hole and the connecting hole in turn and fixes the driving mechanism to the shredder body through a nut.

2. The belt tension adjustment structure for a branch chipper according to claim 1, characterized in that: There are two limiters, which are respectively arranged on both sides of the branch shredder body and the driving mechanism.

3. The belt tension adjustment structure for a branch chipper according to claim 1, characterized in that: The flange is the abutment portion of the driving mechanism, and the support force plate is the abutment portion of the branch shredder body.

4. The belt tension adjustment structure for a branch chipper according to claim 1, characterized in that: A support member is provided between the shredder body and the driving mechanism, which can lift the driving mechanism to change the distance between the two pulleys. The support member includes a support platform and an adjustment column. The support platform is fixedly connected to the shredder body. The adjustment column is provided on the support platform and the distance between the two pulleys can be changed by adjusting the adjustment column.

5. The belt tension adjustment structure for a branch chipper according to claim 4, characterized in that: The adjusting column is a top screw bolt, the support platform is provided with a through hole for installing the top screw bolt, and the top screw bolt is sleeved with two nuts which are respectively clamped on the top surface and the bottom surface of the support platform and fix the top screw bolt to the support platform.

6. The belt tension adjustment structure for a branch chipper according to claim 4, characterized in that: The supporting member is a telescopic cylinder.

7. The belt tension adjustment structure for a branch chipper according to claim 1, characterized in that: A hinge seat is provided on one side of the power seat plate, and a hinge ear matched with the hinge seat is provided on the branch shredder body. The hinge ear is inserted into the hinge seat and hinged through a hinge shaft.

8. The belt tension adjustment structure for a branch chipper according to claim 7, characterized in that: The power seat plate is provided with a first adjustment notch, and the branch chipper body is provided with a concave second adjustment notch.

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