Adjusting mechanism for trencher chain guide rail

Abstract

The utility model discloses an adjusting mechanism for a chain guide rail of a trencher, which belongs to the technical field of trenchers and is characterized in that one end of a guide rail body is provided with an adjusting groove, the inner wall of the adjusting groove is slidably connected with a movable guide rail, and one end of the movable guide rail and one end of the guide rail body are provided with clearance grooves; the adjusting mechanism comprises a guide rail body, an adjusting groove, a movable guide rail and a control column, two receding grooves are formed in the guide rail body, a driven chain wheel and a driving chain wheel are rotationally connected into the two receding grooves correspondingly, a chain is meshed with the surfaces of the driven chain wheel and the driving chain wheel, and a driving shaft is fixedly connected to the center of the driving chain wheel in a sleeving mode. The guide rail has the length adjusting function, the supporting strength of the guide rail is guaranteed, the telescopic length of an adjusting column can be easily and rapidly controlled through a second fixing plate, a rotating head and a limiting sleeve, and therefore the telescopic length of the movable guide rail is controlled, a chain is tensioned, and the supporting stability of the guide rail is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of trenching machines, and more specifically to an adjusting mechanism for a trenching machine chain guide rail. Background Art

[0002] The trencher is one of the main types of construction machinery. The commonly used trencher chain guide rails, although with the function of adjustment, are mostly supported by bolts, so that the guide rails tension the chain. However, during the operation of the chain, the bolts are subjected to greater force, which can easily lead to bolt stripping and damage, and then cause the guide rails to automatically move and shrink, making it impossible for the chain to remain tensioned. At the same time, the support strength of the adjustable guide rail connection is insufficient and easily damaged.

[0003] For example, the chain guide rail adjustment mechanism of the trencher disclosed in announcement number CN218264049U includes a base plate on one side, a rotating shaft is rotatably connected to the base plate, a driving wheel is arranged on the rotating shaft, and a guide rail, one end of which is located at the driving wheel.

[0004] It can be seen from the above-mentioned public scheme that the baffle and bracket of the guide rail are fixed by bolts respectively, so that the two have the function of sliding and telescopic adjustment of the chain tension. However, the connection area between the bolts and the baffle and the bracket is limited, which reduces the support strength. In addition, the spacing between the two bolts is adjusted by a third bolt, and then the moving position between the baffle and the bracket is adjusted, which can easily cause the surface thread of the third bolt to be damaged by stripping, thereby reducing the support stability. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an adjustment mechanism for a trenching machine chain guide rail, the adjustment mechanism for the trenching machine chain guide rail, through the provision of a guide rail body, an adjustment groove, a movable guide rail and a control column, not only enables the guide rail to have the function of adjusting the length, but also ensures the supporting strength of the guide rail, and through the provision of a second fixed plate, a rotating head and a limit sleeve, the telescopic length of the adjusting column can be easily and quickly controlled, thereby controlling the telescopic length of the movable guide rail, and then the chain is tensioned, thereby ensuring the supporting stability of the guide rail.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A kind of adjustment mechanism for the chain guide rail of trenching machine comprises a guide rail body, one end of the guide rail body is provided with an adjustment groove, the inner wall of the adjustment groove is slidably connected with a movable guide rail, one end of the movable guide rail and the guide rail body are provided with a clearance groove, and a driven sprocket and a driving sprocket are rotatably connected in the two clearance grooves respectively, the surfaces of the driven sprocket and the driving sprocket are meshed with chains, the center position of the driving sprocket is fixedly sleeved with a driving shaft, the center position of the driven sprocket is rotatably connected with a rotating shaft through a bearing, symmetrical first fixed plates are fixedly connected with both sides of the guide rail body, and the surface of the first fixed plate is fixedly connected with a control The control column has one end connected with an adjusting column by a thread, the surface of the adjusting column is rotatably connected with a second fixed plate, the surface of the adjusting column is fixedly sleeved with a rotating head and a limit sleeve. The adjusting mechanism for the chain guide rail of the trencher not only enables the guide rail to have the function of adjusting the length, but also ensures the supporting strength of the guide rail through the set guide rail body, adjusting groove, movable guide rail and control column, and the telescopic length of the adjusting column can be easily and quickly controlled through the set second fixed plate, rotating head and limit sleeve, thereby controlling the telescopic length of the movable guide rail, and then tightening the chain to ensure the supporting stability of the guide rail.

[0008] Furthermore, symmetrical adjustment holes are provided on both sides of the guide rail body, and bolt holes are provided on the sides of the movable guide rail. Fastening bolts are inserted into the inner walls of the bolt holes, and the surfaces of the fastening bolts are in contact and connected with the inner walls of the adjustment holes. The adjustment holes and the fastening bolts can strengthen the connection firmness between the movable guide rail and the guide rail body and reduce the compressive strength of the adjustment column.

[0009] Furthermore, a gap is provided between the rotating head and the limiting sleeve, and the width of the gap is greater than the thickness of the second fixed plate. The surface of the rotating head is provided with annular holes distributed evenly, and the holes facilitate the insertion of a force rod to easily rotate the rotating head and then rotate the adjusting column.

[0010] Furthermore, a symmetrical support block is fixedly connected to the side of the guide rail body, a limiting hole is provided on the surface of the support block, and the inner wall of the limiting hole is in contact with one end of the control. The support block can increase the supporting strength of the connection between the control and the adjustment column.

[0011] Furthermore, a receiving groove is provided at one end of the control column, an inner wall of the receiving groove is provided with an internal thread, and a surface of the adjustment column is provided with an external thread, so as to facilitate controlling the telescopic position of the adjustment column through the thread.

[0012] Furthermore, one end of the second fixing plate is fixedly connected to the side of the movable guide rail, and a through hole is provided on the surface of the second fixing plate. The inner diameter of the through hole is larger than the outer diameter of the adjusting column, so that the adjusting column has the function of free rotation.

[0013] Furthermore, the inner wall of the air avoidance groove is provided with symmetrical axial holes to facilitate the installation of the sprocket shaft.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The scheme is used for the adjustment mechanism of the chain guide rail of the trenching machine. By arranging the guide rail body, the adjustment groove, the movable guide rail and the control column, not only the guide rail has the function of adjusting the length, but also the supporting strength of the guide rail is guaranteed.

[0016] This solution can easily and quickly control the telescopic length of the adjustment column by setting up the second fixed plate, rotating head and limit sleeve, thereby controlling the telescopic length of the movable guide rail, and then tightening the chain to ensure the supporting stability of the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the movable guide rail structure of the utility model;

[0019] Figure 3 for Figure 1 A magnified view of part A;

[0020] Figure 4 It is a side view of the installation structure of the guide rail body and the first fixing plate of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1 guide rail body, 11 adjustment groove, 12 adjustment hole, 13 first fixed plate, 14 fastening bolt, 2 movable guide rail, 21 avoidance groove, 22 shaft hole, 23 second fixed plate, 24 through hole, 25 bolt hole, 3 driving sprocket, 31 driving shaft, 4 driven sprocket, 41 rotating shaft, 5 chain, 6 control column, 61 receiving groove, 62 adjustment column, 63 rotating head, 64 limiting sleeve, 7 support block, 71 limiting hole. DETAILED DESCRIPTION

[0023] 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. Example

[0024] See also Figure 1-4, an adjustment mechanism for a trenching machine chain guide, comprising a guide rail body 1, the guide rail body 1 and a movable guide rail 2 form a trenching machine chain guide, and the chain 5 can be tensioned by adjusting the telescopic length, an adjustment groove 11 is provided at one end of the guide rail body 1, and the movable guide rail 2 is slidably connected to the inner wall of the adjustment groove 11, and an air avoidance groove 21 is provided at one end of the movable guide rail 2 and the guide rail body 1, and a driven sprocket 4 and a driving sprocket 3 are rotatably connected in the two air avoidance grooves 21, and symmetrical shaft holes 22 are provided on the inner wall of the air avoidance groove 21 to facilitate the installation of the sprocket shaft, and the surfaces of the driven sprocket 4 and the driving sprocket 3 are meshed with a chain 5, and a driving shaft 31 is fixedly sleeved at the center position of the driving sprocket 3, and the driving shaft 31 is used to drive the driving sprocket 3 to rotate, and a driving structure is provided at one end Its composition structure and working principle are well known to those skilled in the art, and will not be described in detail here. The center position of the driven sprocket 4 is rotatably connected to the rotating shaft 41 through a bearing, and symmetrical first fixed plates 13 are fixedly connected to both sides of the guide rail body 1. The surface of the first fixed plate 13 is fixedly connected to a control column 6, and one end of the control column 6 is connected to an adjusting column 62 through a thread. The surface of the adjusting column 62 is rotatably connected to a second fixed plate 23, and one end of the second fixed plate 23 is fixedly connected to the side of the movable guide rail 2. A through hole 24 is provided on the surface of the second fixed plate 23, and the inner diameter of the through hole 24 is larger than the outer diameter of the adjusting column 62, so that the adjusting column 62 has the function of free rotation, and the surface of the adjusting column 62 is fixedly sleeved with a rotating head 63 and a limit sleeve 64.

[0025] Symmetrical adjustment holes 12 are provided on both sides of the guide rail body 1, and bolt holes 25 are provided on the sides of the movable guide rail 2. A fastening bolt 14 is inserted into the inner wall of the bolt hole 25, and the surface of the fastening bolt 14 is in contact with the inner wall of the adjustment hole 12. The adjustment hole 12 and the fastening bolt 14 can strengthen the connection firmness between the movable guide rail 2 and the guide rail body 1, and reduce the compressive strength of the adjusting column 62. A gap is provided between the rotating head 63 and the limiting sleeve 64, and the width of the gap is greater than the thickness of the second fixed plate 23. The surface of the rotating head 63 is provided with annular holes equidistantly distributed, and the holes are convenient for easily rotating the rotating head 63 through the insertion of a force rod, thereby rotating the adjusting column 62.

[0026] A symmetrical support block 7 is fixedly connected to the side of the guide rail body 1, and a limiting hole 71 is provided on the surface of the support block 7. The inner wall of the limiting hole 71 is in contact with one end of the control 6. The support block 7 can increase the supporting strength of the connection between the control 6 and the adjusting column 62. A receiving groove 61 is provided at one end of the control column 6, and an inner wall of the receiving groove 61 is provided with an internal thread. The surface of the adjusting column 62 is provided with an external thread, which is convenient for controlling the telescopic position of the adjusting column 62 through the thread.

[0027] When adjusting the tension chain 5, the adjusting mechanism for the chain guide rail of the trenching machine first loosens the fastening bolt 14 by rotating the wrench counterclockwise, and then rotates the rotating head 63 by the wrench or the force rod. When the rotating head 63 drives the adjusting column 62 to rotate clockwise, the adjusting column 62 extends out of the receiving groove 61 to the left, so that the limiting sleeve 64 presses the second fixing plate 23 to the left, so that the second fixing plate 23 drives the movable guide rail 2 to move to the left and extend out of the adjusting groove 11, thereby increasing the length of the guide rail, tensioning the chain 5, and completing the tensioning of the chain 5. By tightening the fastening bolt 14 clockwise with a wrench, the positioning stability of the movable guide rail 2 in the adjustment position is enhanced. By setting the guide rail body 1, the adjustment slot 11, the movable guide rail 2 and the control column 6, not only the guide rail has the function of adjusting the length, but also the supporting strength of the guide rail is guaranteed. In addition, by setting the second fixed plate 23, the rotating head 63 and the limiting sleeve 64, the telescopic length of the adjusting column 62 can be easily and quickly controlled, thereby controlling the telescopic length of the movable guide rail 2, and then tightening the chain 5 to ensure the supporting stability of the guide rail.

[0028] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An adjustment mechanism for a trenching machine chain guide rail, comprising a guide rail body (1), characterized in that: One end of the guide rail body (1) is provided with an adjustment groove (11), the inner wall of the adjustment groove (11) is slidably connected to a movable guide rail (2), one end of the movable guide rail (2) and the guide rail body (1) are both provided with a clearance groove (21), and a driven sprocket (4) and a driving sprocket (3) are rotatably connected in the two clearance grooves (21), the surfaces of the driven sprocket (4) and the driving sprocket (3) are meshed with chains (5), the center position of the driving sprocket (3) is fixedly sleeved with a drive shaft (31), and the movable guide rail (2) and the guide rail body (1) are both provided with a clearance groove (21). The center of the driven sprocket (4) is rotatably connected to a rotating shaft (41) via a bearing; symmetrical first fixing plates (13) are fixedly connected to both sides of the guide rail body (1); a control column (6) is fixedly connected to the surface of the first fixing plate (13); one end of the control column (6) is connected to an adjustment column (62) via a thread; the surface of the adjustment column (62) is rotatably connected to a second fixing plate (23); and a rotating head (63) and a limiting sleeve (64) are fixedly sleeved on the surface of the adjustment column (62).

2. The adjusting mechanism for the chain guide rail of a trenching machine according to claim 1, characterized in that: Symmetrical adjustment holes (12) are provided on both sides of the guide rail body (1), bolt holes (25) are provided on the side surfaces of the movable guide rail (2), fastening bolts (14) are inserted into the inner walls of the bolt holes (25), and the surfaces of the fastening bolts (14) are in contact with the inner walls of the adjustment holes (12).

3. The adjusting mechanism for the chain guide rail of a trenching machine according to claim 1, characterized in that: A gap is provided between the rotating head (63) and the limiting sleeve (64), and the width of the gap is greater than the thickness of the second fixing plate (23). The surface of the rotating head (63) is provided with annular holes distributed at equal intervals.

4. The adjusting mechanism for the chain guide rail of a trenching machine according to claim 1, characterized in that: A symmetrical support block (7) is fixedly connected to the side surface of the guide rail body (1), a limiting hole (71) is provided on the surface of the support block (7), and the inner wall of the limiting hole (71) is in contact with one end of the control column (6).

5. The adjusting mechanism for the chain guide rail of a trenching machine according to claim 1, characterized in that: One end of the control column (6) is provided with a receiving groove (61), the inner wall of the receiving groove (61) is provided with an internal thread, and the surface of the adjustment column (62) is provided with an external thread.

6. The adjusting mechanism for the chain guide rail of a trenching machine according to claim 1, characterized in that: One end of the second fixing plate (23) is fixedly connected to the side surface of the movable guide rail (2), and a through hole (24) is provided on the surface of the second fixing plate (23).

7. The adjusting mechanism for a trenching machine chain guide according to claim 1, characterized in that: The inner wall of the air avoidance groove (21) is provided with symmetrical axial holes (22).

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