Precise pneumatic drilling tool for agricultural machinery transmission shaft

Abstract

The utility model discloses an accurate pneumatic drilling tool for an agricultural machinery transmission shaft, and relates to the technical field of transmission shaft processing, the accurate pneumatic drilling tool comprises a bottom plate, the top end of the bottom plate is provided with a sliding groove, two first sliding blocks are movably inserted into the inner wall of the sliding groove, and the top ends of the two first sliding blocks are provided with a placing assembly; the placing assembly comprises two machine shells, a second two-way screw rod is rotatably installed on the inner walls of the machine shells, two second sliding blocks are in threaded connection with the outer wall of the second two-way screw rod, two placing plates are rotatably installed on the inner walls of the machine shells, and two supporting plates are arranged between the two placing plates and the two second sliding blocks correspondingly; one end of the outer wall of the second two-way screw penetrates through the outer wall of the machine shell and is fixedly provided with a first bevel gear, by means of the containing assembly, the angle of the containing plate can be flexibly adjusted according to the diameter of a transmission shaft, the problem that a traditional arc-shaped clamping block is not matched with transmission shafts with different diameters is solved, and the clamping and fixing effect on the transmission shaft is greatly improved; and further, the drilling precision and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft processing technology, specifically to a precision pneumatic drilling fixture for agricultural machinery transmission shafts. Background Technology

[0002] As a core component of power transmission in agricultural machinery, the driveshaft plays a crucial role in efficiently and stably transmitting engine power to various working parts. It is widely used in tractors, combine harvesters, seeders, and other agricultural equipment. Depending on the operational needs of different agricultural machines, driveshafts have diverse design features. In practical applications, many driveshafts require holes drilled on both end faces to connect other key components, enabling effective power transmission and coordinated operation of the equipment.

[0003] In the prior art, such as the drilling device for drive shaft production disclosed in Chinese Patent No. CN222403565U, a base is included. The top of the base is symmetrically provided with multiple through slots. The top of the base is symmetrically provided with arc-shaped support seats for initial positioning of the drive shaft body. The interior of the base is provided with a cavity, and a rotating shaft is rotatably arranged inside the cavity. By placing the drive shaft body on the arc-shaped support seat, the drive shaft body is initially positioned. Then, the rotating shaft is rotated by a drive mechanism. When the rotating shaft rotates, the threaded sliders provided on the threaded section move towards each other. The movement of the threaded sliders towards each other drives the C-shaped frame to move towards each other. The movement of the C-shaped frame towards each other drives two sets of arc-shaped clamping blocks to clamp and fix the two sides of the drive shaft body. This allows the drive shaft body to be well clamped and fixed before drilling, improving the clamping stability of the drive shaft in the drilling device for drive shaft production, and enabling the drive shaft to be drilled stably.

[0004] The aforementioned patent can clamp and fix the drive shaft, but there are still some problems. The shape of the arc-shaped clamping block remains unchanged. When drilling the drive shaft, there are often some drive shafts with different diameters. At this time, due to the mismatch between the arc-shaped clamping block and the drive shaft, the clamping and fixing effect of the drive shaft may be poor, thus affecting the drilling effect of the drive shaft. Therefore, this utility model provides a precision pneumatic drilling fixture for agricultural machinery drive shafts. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precision pneumatic drilling fixture for agricultural machinery drive shafts. It solves the problem that when drilling drive shafts, there are often drive shafts with different diameters where the shape of the arc-shaped clamping block remains unchanged. In such cases, the arc-shaped clamping block may not match the drive shaft, resulting in poor clamping and fixing of the drive shaft, which in turn affects the drilling effect.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a precision pneumatic drilling fixture for agricultural machinery drive shaft, including a base plate, a groove is provided at the top of the base plate, two first sliders are movably inserted into the inner wall of the groove, and a placement component is provided at the top of the two first sliders;

[0007] The placement assembly includes two housings. A second bidirectional screw is rotatably mounted on the inner wall of each housing. Two second sliders are threadedly connected to the outer wall of the second bidirectional screw. Two placement plates are rotatably mounted on the inner wall of each housing. Two support plates are respectively provided between the two placement plates and the two second sliders. One end of the outer wall of the second bidirectional screw penetrates the outer wall of the housing and is fixedly mounted with a first bevel gear. A sliding bevel gear is meshed with the outer wall of the first bevel gear.

[0008] Preferably, a first bidirectional screw is rotatably mounted on the inner wall of the slide groove, and both first sliders are threadedly connected to the first bidirectional screw. A first motor is fixedly mounted on one side of the outer wall of the base plate. The output shaft of the first motor passes through the inner wall of the slide groove and is fixedly connected to one end of the outer wall of the first bidirectional screw. One end of the support plate is rotatably connected to the second slider, and the other end of the support plate is rotatably connected to the outer wall of the placement plate.

[0009] Preferably, two vertical plates are fixedly installed at the top of the base plate, and a rotating rod is rotatably installed between opposite sides of the two vertical plates. Two sliding strips are fixedly installed on the outer wall of the rotating rod. A second motor is fixedly installed on the outer wall of one of the two vertical plates. The second motor passes through the outer wall of the vertical plate and is fixedly connected to one end of the outer wall of the rotating rod.

[0010] Preferably, the outer walls of the rotating rod and the two slide bars are slidably connected to the two sliding bevel gears, and a connecting plate is rotatably mounted on one end of the outer wall of each of the two sliding bevel gears. One end of the outer wall of each of the two connecting plates is fixedly connected to one side of the outer wall of each of the two housings, and the two first sliders are fixedly connected to the two housings respectively.

[0011] Preferably, a frame is fixedly installed at the top of the base plate, a cylinder is fixedly installed at the top of the frame, and a pressing plate is fixedly installed at the output end of the cylinder.

[0012] Preferably, two electric slide rails are fixed to the top of the base plate, and each of the two electric slide rails is provided with a drilling device at its output end.

[0013] Beneficial effects

[0014] This utility model provides a precision pneumatic drilling fixture for agricultural machinery drive shafts. Compared with the prior art, it has the following advantages:

[0015] (1) The precision pneumatic drilling fixture for agricultural machinery drive shafts starts the second motor when different diameter agricultural machinery drive shafts need to be placed. The second motor drives the rotating rod to rotate, and the slide bar on the outer wall of the rotating rod rotates accordingly, causing the sliding bevel gear to rotate. Since the sliding bevel gear meshes with the first bevel gear, the movement of the sliding bevel gear drives the first bevel gear to rotate, which in turn causes the second bidirectional screw to rotate. When the second bidirectional screw rotates, the two second sliders threaded to it move towards or away from each other in the machine housing. The second sliders push the placement plate to rotate around the rotation connection point between the second slider and the machine housing through the support plate, thereby adjusting the included angle between the two placement plates to adapt to the placement requirements of drive shafts of different diameters. The unique design of the placement component allows the angle of the placement plate to be flexibly adjusted according to the diameter of the drive shaft, solving the problem of mismatch between the traditional arc-shaped clamping block and drive shafts of different diameters, greatly improving the clamping and fixing effect of the drive shaft, and thus improving the drilling accuracy and quality.

[0016] (2) The precision pneumatic drilling fixture for the agricultural machinery drive shaft starts the first motor according to the length of the drive shaft before placement. The first motor drives the first bidirectional screw to rotate. Since both first sliders are threadedly connected to the first bidirectional screw and are fixedly connected to the two housings respectively, the rotation of the first bidirectional screw will drive the two first sliders to move towards or away from each other in the groove, thereby precisely adjusting the distance between the two placement components. In this way, whether it is a short small agricultural machinery drive shaft or a long large combine harvester drive shaft, it can be stably placed and fixed by adjusting the distance between the two placement components. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the placement components of this utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 4 This is a partial structural schematic diagram of the placement component of this utility model;

[0021] Figure 5 This is a schematic diagram of the drilling device of this utility model.

[0022] In the diagram: 1. Base plate; 2. Slide groove; 3. First bidirectional screw; 4. First motor; 5. First slider; 6. Placement assembly; 61. Housing; 62. Second bidirectional screw; 63. Second slider; 64. Support plate; 65. Placement plate; 66. First bevel gear; 67. Connecting plate; 68. Sliding bevel gear; 69. Rotating rod; 610. Slide bar; 611. Vertical plate; 612. Second motor; 7. Frame; 8. Cylinder; 9. Pressing plate; 10. Electric slide rail; 11. Drilling device. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides two technical solutions:

[0025] Figures 1-5 The first embodiment is shown: a precision pneumatic drilling fixture for agricultural machinery drive shaft, including a base plate 1, a groove 2 is provided at the top of the base plate 1, two first sliders 5 are movably inserted into the inner wall of the groove 2, and a placement component 6 is provided at the top of the two first sliders 5.

[0026] The placement assembly 6 includes two housings 61. A second bidirectional screw 62 is rotatably mounted on the inner wall of the housing 61. Two second sliders 63 are threadedly connected to the outer wall of the second bidirectional screw 62. Two placement plates 65 are rotatably mounted on the inner wall of the housing 61. Two support plates 64 are respectively provided between the two placement plates 65 and the two second sliders 63. One end of the outer wall of the second bidirectional screw 62 passes through the outer wall of the housing 61 and is fixedly mounted with a first bevel gear 66. A sliding bevel gear 68 is meshed on the outer wall of the first bevel gear 66.

[0027] A first bidirectional screw 3 is rotatably mounted on the inner wall of the slide groove 2. Both first sliders 5 are threadedly connected to the first bidirectional screw 3. A first motor 4 is fixedly mounted on one side of the outer wall of the base plate 1. When the first motor 4 is turned on, it can drive the first bidirectional screw 3 to rotate, thereby adjusting the distance between the two first sliders 5. The output shaft of the first motor 4 passes through the inner wall of the slide groove 2 and is fixedly connected to one end of the outer wall of the first bidirectional screw 3. One end of the support plate 64 is rotatably connected to the second slider 63, and the other end of the support plate 64 is rotatably connected to the outer wall of the placement plate 65. When the second bidirectional screw 62 rotates, it will drive the two second sliders 63 to move closer or further apart within the housing 61. When the second sliders 63 move, they drive the placement plate 65 to rotate through the support plate 64, thereby adjusting the included angle between the two placement plates 65 to accommodate the placement requirements of drive shafts of different diameters.

[0028] Two vertical plates 611 are fixedly installed at the top of the base plate 1. A rotating rod 69 is rotatably installed between the opposite sides of the two vertical plates 611. Two sliding strips 610 are fixedly installed on the outer wall of the rotating rod 69. A second motor 612 is fixedly installed on the outer wall of one of the two vertical plates 611. The second motor 612 passes through the outer wall of the vertical plate 611 and is fixedly connected to one end of the outer wall of the rotating rod 69. The second motor 612 can drive the rotating rod 69 and the sliding strip 610 to rotate.

[0029] Figures 1-5 The second embodiment is shown. The main difference from the first embodiment is that the outer walls of the rotating rod 69 and the two slide bars 610 are slidably connected to the two sliding bevel gears 68. The sliding bevel gears 68 can slide on the surfaces of the rotating rod 69 and the slide bars 610. When the slide bars 610 rotate, they can drive the sliding bevel gears 68 to rotate. A connecting plate 67 is rotatably installed on one end of the outer wall of each of the two sliding bevel gears 68. When the sliding bevel gears 68 rotate, they will not interfere with the connecting plate 67. The connecting plate 67 can drive the sliding bevel gears 68 to move. One end of the outer wall of each of the two connecting plates 67 is fixedly connected to one side of the outer wall of each of the two housings 61. The two first sliders 5 are fixedly connected to each of the two housings 61.

[0030] A frame 7 is fixedly installed at the top of the base plate 1. A cylinder 8 is fixedly installed at the top of the frame 7. A pressing plate 9 is fixedly installed at the output end of the cylinder 8. The pressing plate 9 is narrow, so it can apply pressure to the drive shaft below to fix the drive shaft. Anti-slip rubber pads can be provided on the surfaces of the placement plate 65 and the pressing plate 9, thereby improving the friction on the drive shaft and improving the fixing and clamping effect of the drive shaft.

[0031] Two electric slide rails 10 are fixed at the top of the base plate 1. Each of the two electric slide rails 10 is equipped with a drilling device 11 at its output end. The electric slide rail 10 is existing technology and is usually composed of a lead screw, a motor and a slide rail. It can drive the drilling device 11 to move to a suitable position so that it can drill holes at both ends of the drive shaft. The drilling device 11 is existing technology and is usually composed of a motor, a mounting plate and a drill bit. When the motor is turned on, it can drive the drill bit to rotate so that drilling can be performed.

[0032] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0033] During operation, before placing the drive shaft, the first motor 4 is started according to the length of the drive shaft. The first motor 4 drives the first bidirectional screw 3 to rotate. Since both first sliders 5 are threadedly connected to the first bidirectional screw 3 and are fixedly connected to the two housings 61 respectively, the rotation of the first bidirectional screw 3 drives the two first sliders 5 to move towards or away from each other in the slide groove 2, thereby precisely adjusting the distance between the two placement components 6. When it is necessary to place agricultural machinery drive shafts of different diameters, the second motor 612 is started. The second motor 612 drives the rotating rod 69 to rotate, and the slide bar 610 on the outer wall of the rotating rod 69 rotates accordingly, causing the sliding bevel gear 68 to rotate. Since the sliding bevel gear 68 meshes with the first bevel gear 66, the movement of the sliding bevel gear 68 drives the first bevel gear 66 to rotate, thereby causing the second bidirectional screw 62 to rotate. When the second bidirectional screw 62 rotates, the two second sliders 63 threadedly connected to it move towards or away from each other in the housing 61. The second slider 63 pushes the placement plate 65 to rotate around its rotational connection point with the housing 61 via the support plate 64, thereby adjusting the included angle between the two placement plates 65 to accommodate the placement requirements of drive shafts of different diameters. After adjustment, the drive shaft is placed on the top of the placement plate 65. Then, the cylinder 8 is turned on, and the cylinder 8 drives the pressing plate 9 to move downward, thereby pressing and fixing the drive shaft below. Then, the two ends of the drive shaft can be drilled through the electric slide rail 10 and the drilling device 11.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision pneumatic drilling fixture for agricultural machinery drive shafts, comprising a base plate (1), wherein a groove (2) is provided at the top of the base plate (1), and two first sliders (5) are movably inserted into the inner wall of the groove (2), characterized in that: Placement components (6) are provided at the top of the two first sliders (5); The placement assembly (6) includes two housings (61). A second bidirectional screw (62) is rotatably mounted on the inner wall of the housing (61). Two second sliders (63) are threadedly connected to the outer wall of the second bidirectional screw (62). Two placement plates (65) are rotatably mounted on the inner wall of the housing (61). Two support plates (64) are respectively provided between the two placement plates (65) and the two second sliders (63). One end of the outer wall of the second bidirectional screw (62) penetrates the outer wall of the housing (61) and is fixedly mounted with a first bevel gear (66). A sliding bevel gear (68) is meshed with the outer wall of the first bevel gear (66).

2. The precision pneumatic drilling fixture for agricultural machinery drive shafts according to claim 1, characterized in that: The inner wall of the slide groove (2) is rotatably mounted with a first bidirectional screw (3), and the two first sliders (5) are threadedly connected to the first bidirectional screw (3). A first motor (4) is fixedly mounted on one side of the outer wall of the base plate (1). The output shaft of the first motor (4) passes through the inner wall of the slide groove (2) and is fixedly connected to one end of the outer wall of the first bidirectional screw (3). One end of the support plate (64) is rotatably connected to the second slider (63), and the other end of the support plate (64) is rotatably connected to the outer wall of the placement plate (65).

3. The precision pneumatic drilling fixture for agricultural machinery drive shafts according to claim 1, characterized in that: Two vertical plates (611) are fixedly installed at the top of the base plate (1). A rotating rod (69) is rotatably installed between the opposite sides of the two vertical plates (611). Two sliding strips (610) are fixedly installed on the outer wall of the rotating rod (69). A second motor (612) is fixedly installed on the outer wall of one of the two vertical plates (611). The second motor (612) passes through the outer wall of the vertical plate (611) and is fixedly connected to one end of the outer wall of the rotating rod (69).

4. The precision pneumatic drilling fixture for agricultural machinery drive shafts according to claim 3, characterized in that: The outer walls of the rotating rod (69) and the two slide bars (610) are slidably connected to the two sliding bevel gears (68). A connecting plate (67) is rotatably installed on one end of the outer wall of each of the two sliding bevel gears (68). One end of the outer wall of each of the two connecting plates (67) is fixedly connected to one side of the outer wall of each of the two housings (61). The two first sliders (5) are fixedly connected to the two housings (61) respectively.

5. The precision pneumatic drilling fixture for agricultural machinery drive shafts according to claim 1, characterized in that: A frame (7) is fixedly installed at the top of the base plate (1), and a cylinder (8) is fixedly installed at the top of the frame (7). A pressing plate (9) is fixedly installed at the output end of the cylinder (8).

6. The precision pneumatic drilling fixture for agricultural machinery drive shafts according to claim 1, characterized in that: Two electric slide rails (10) are fixed at the top of the base plate (1), and a drilling device (11) is provided at the output end of each of the two electric slide rails (10).

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