Auxiliary adjusting mechanism for bevel gear assembly

Abstract

The utility model relates to the technical field of manual tools, and discloses a bevel gear assembly auxiliary adjusting mechanism which comprises a shell, a driving cylindrical gear is rotationally connected to the center of the shell, at least two driven cylindrical gears with the same size are further rotationally connected to the shell, and all the driven cylindrical gears are externally meshed with the driving cylindrical gear. The journal ends of the same sides of all the driven cylindrical gears are exposed out of the shell, and the positions, exposed out of the journal ends of the shell, of all the driven cylindrical gears are coaxially connected with screws. The auxiliary adjusting device is used for adjusting the bevel gear in an auxiliary mode, assembling and adjusting work of a bevel gear pair can be greatly simplified, assembling and adjusting efficiency is greatly improved, and process cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hand tools, and more particularly to an auxiliary adjustment mechanism for bevel gear assembly. Background Art

[0002] When assembling a bevel gear pair on a housing, the axial position of the pinion and / or large bevel gear must be adjusted to ensure the meshing contact area and backlash of the bevel gear pair meet the specified requirements. This adjustment requires axially moving the bevel gear shaft to a certain position, securing the bevel gear shaft, and then rotating the pinion or large bevel gear to better observe the contact area and measure the backlash. If the contact area and backlash do not meet the specified requirements, the bevel gear shaft must be loosened, and the axial movement of the bevel gear shaft must be continued, and the above steps repeated. During actual assembly, multiple axial movements, loosening, and securing the bevel gear shaft are required to ultimately achieve the required contact area and backlash. Axial movement of the bevel gear shaft is usually achieved through brute force, such as direct or indirect tapping of the bevel gear cup, requiring a skilled technician. However, even with such skilled technicians, achieving infinitely variable axial movement of the bevel gear shaft is difficult, necessitating repeated axial movement of the bevel gear shaft in both the forward and reverse directions. Furthermore, in actual operation, after each axial movement of the bevel gear shaft to a certain position, multiple sets of paper pads of a fixed thickness must be placed between the sleeve cup and the housing to ensure that the bevel gear shaft does not move when the bolts are tightened to secure it. Throughout the adjustment process, the overall thickness of the paper pads must be adjusted multiple times by gradually adding or removing them. Once the bevel gear shaft is adjusted to the desired position, the final overall thickness of the paper pads must be measured to determine the thickness of the subsequent adjustment shims. This makes the above assembly operation extremely inefficient and complex. Summary of the Invention

[0003] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a bevel gear assembly auxiliary adjustment mechanism. The present invention achieves the above-mentioned purpose through the following technical solutions.

[0004] A bevel gear assembly auxiliary adjustment mechanism includes a housing, a driving cylindrical gear is rotatably connected to the center of the housing, and at least two driven cylindrical gears of the same size are rotatably connected to the housing. All the driven cylindrical gears are externally meshed with the driving cylindrical gear, the same-side journal ends of all the driven cylindrical gears are exposed to the housing, and the journal ends of all the driven cylindrical gears exposed to the housing are coaxially connected to screws.

[0005] The housing in this solution can be used as a mounting base for other components and can have various structural forms, preferably a cylindrical shape with one end open. The driving cylindrical gear can be rotatably connected to the center of the housing in various forms, for example, a center pin can be coaxially fixed at the center of the housing, and the driving cylindrical gear can be directly rotatably sleeved on the outside of the center pin. In order to ensure smooth rotation, a self-lubricating bushing can be provided between the driving cylindrical gear and the center pin. The driven cylindrical gear can be rotatably connected to the housing in various forms, for example, a cylindrical through hole can be directly opened on the housing, and then the shaft neck of the driven cylindrical gear can be coaxially fitted through the cylindrical through hole to achieve rotational connection. In order to ensure smooth rotation, a self-lubricating bushing can be first embedded in the cylindrical through hole, and then the shaft neck can be coaxially fitted through the self-lubricating bushing. The connection between the shaft neck end of the driven cylindrical gear and the screw can be in various forms, for example, a threaded hole can be coaxially opened at the shaft neck end, and then the screw can be threaded into the threaded hole, and a nut can be threaded on the outside of the screw to prevent loosening.

[0006] When the bevel gear is assembled to the housing, the bevel gear and bearings are usually assembled into the sleeve cup first, and then the bevel gear and bearings are assembled to the housing together with the sleeve cup. If you want to adjust the axial position of the bevel gear, you actually perform axial operations directly on the sleeve cup, and the bevel gear will move axially with the sleeve cup. When using this solution, after the sleeve cup is inserted into the housing, the flange of the sleeve cup is first fitted on the outer wall of the housing, and then the screw connected to the driven cylindrical gear is threaded through the threaded through hole on the flange of the sleeve cup and the end face of the screw is abutted against the outer wall of the housing. Then, rotating the active cylindrical gear can drive all the driven cylindrical gears to rotate synchronously, and then drive all the screws to rotate synchronously, thereby forcing the sleeve cup to move axially together with the bevel gear. In this way, there is no need to use violent methods such as directly or indirectly hitting the sleeve cup to move the bevel gear axially, and micro-stepless adjustment of the axial movement of the bevel gear shaft system can be achieved. Since it can be adjusted infinitely in micro-steps, the actual adjustment needs can be met by only moving the bevel gear in one direction, that is, the flange of the cup gradually moves away from the housing in one direction, so there is no need to repeatedly move the bevel gear axially in both directions. After adjusting the axial position of the bevel gear, it is only necessary to measure the distance between the cup and the housing to obtain the thickness of the adjustment pad. If there is no appropriate threaded through hole on the flange of the cup, an appropriate threaded through hole can be processed separately for the screw to pass through. In summary, the use of this solution to assist in the adjustment of the bevel gear can greatly simplify the assembly and adjustment work of the bevel gear pair, greatly improve the assembly and adjustment efficiency, and reduce process costs.

[0007] As a further improved structural form, the driven cylindrical gear has a coaxial cylindrical hole at the end of its journal, and one end of the screw is a polished rod segment. The polished rod segment of the screw coaxially fits into the cylindrical hole of the driven cylindrical gear, and a latch is radially passed through both the polished rod segment and the driven cylindrical gear. This structural form is simple, easy to assemble, and provides a secure connection.

[0008] As a further improved structural form, at least one handle is connected to the above-mentioned driving cylindrical gear at an eccentric position. This structural form makes the rotation operation of the driving cylindrical gear more convenient and is more suitable for fine-tuning the axial movement of the sleeve cup and the bevel gear.

[0009] As a further improved structural form, compression springs are evenly arranged on the housing, one side of the screw, with their axes parallel to the screw's. During use, one end of the compression spring rests against the housing, while the other end rests against the cup. This eliminates thread clearance between the screw and cup, allowing for more precise adjustment of the bevel gear's axial movement.

[0010] Compared with the prior art, the present invention has the following main beneficial effects: the use of the adjustment mechanism of the present invention to assist in the assembly of bevel gears eliminates the need for axially moving the bevel gears by direct or indirect violent means such as striking the cup, and can achieve micro-stepless adjustment of the axial movement of the bevel gear shaft system. Since micro-stepless adjustment is possible, the actual adjustment needs can be met by only moving the bevel gear in one direction, that is, the flange of the cup gradually moves away from the housing in one direction, thus eliminating the need for repeated axial movement of the bevel gear in both positive and negative directions. After adjusting the axial position of the bevel gear, the thickness of the adjustment pad can be determined by simply measuring the distance between the cup and the housing. Therefore, the use of the present invention to assist in adjusting the bevel gears can greatly simplify the assembly and adjustment work of the bevel gear pair, greatly improve the assembly and adjustment efficiency, and reduce process costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present utility model.

[0012] Figure 2 This is a schematic cross-sectional view of the structure of the driven cylindrical gear and the screw rod after being connected in an embodiment of the present utility model.

[0013] Figure 3 This is a schematic diagram of the cross-sectional structure of an embodiment of the utility model when used on a box. Implementation Method

[0014] The present invention is further described below with reference to the accompanying drawings. The drawings are for illustrative purposes only and should not be construed as limiting this patent. To more concisely illustrate this embodiment, certain components known to those skilled in the art but not relevant to the main content of this invention may be omitted from the drawings or descriptions. Furthermore, for ease of presentation, certain components may be omitted, enlarged, or reduced in size in the drawings, but do not represent the dimensions or entire structure of the actual product.

[0015] Examples, such as Figure 1The figure shows a bevel gear assembly auxiliary adjustment mechanism comprising a cylindrical housing 1 with one end open, which serves as a mounting base for the other components. A driving cylindrical gear 2 is rotatably connected to the center of the housing 1. In this embodiment, a center pin 3 is coaxially fixed to the center of the housing 1, and the driving cylindrical gear 2 is directly rotatably sleeved on the outside of the center pin 3. In other embodiments, a self-lubricating bushing may be provided between the driving cylindrical gear and the center pin to ensure smooth rotation.

[0016] Two identically sized driven cylindrical gears 4 are also rotatably connected to the housing 1. In this embodiment, two cylindrical through-holes are directly formed in the bottom of the housing 1. The axes of the two cylindrical through-holes are parallel to the axis of the housing 1 and are evenly spaced around the center of the housing 1. The shaft journals of the driven cylindrical gears 4 are then coaxially inserted through the cylindrical through-holes to achieve the rotational connection. In other embodiments, to ensure smooth rotation, a self-lubricating bushing can be first installed in the cylindrical through-hole, and then the shaft journals are coaxially inserted through the self-lubricating bushing.

[0017] like Figure 1 and Figure 2 As shown, both driven cylindrical gears 4 are externally meshed with the driving cylindrical gear 2, with the journal ends of both driven cylindrical gears 4 on the same side exposed at the bottom of the housing 1. Screws 5 are coaxially connected to the journal ends of both driven cylindrical gears 4 exposed in the housing 1. In this embodiment, a coaxial cylindrical hole 41 is provided at the journal end of the driven cylindrical gear 4. One end of the screw 5 is machined into a polished rod section, which coaxially fits into the cylindrical hole 41 of the driven cylindrical gear 4. A latch 6 is radially inserted through both the polished rod section and the driven cylindrical gear 4. This connection structure is simple, easy to assemble, and provides a secure connection.

[0018] like Figure 1 and Figure 3 As shown, when bevel gear a is assembled on housing b, bevel gear a, bearings, and sleeve cup c usually constitute a bevel gear shaft system. Axial movement of the bevel gear shaft system with bevel gear a is equivalent to axial movement of bevel gear a. To axially move bevel gear a, it is actually necessary to directly perform axial operation on sleeve cup c, and bevel gear a will move axially along with sleeve cup c. When using this embodiment, first fit the flange of sleeve cup c onto the outer wall of housing b, then thread the screw 5 through the threaded through-hole on the flange of sleeve cup c and make the end face of screw 5 abut against the outer wall of housing b. Then, rotating the active cylindrical gear 2 can drive all driven cylindrical gears 4 to rotate synchronously, and then drive all screws 5 to rotate synchronously, thereby forcing sleeve cup c to move axially together with bevel gear a. If there is no appropriate threaded through-hole on the flange of sleeve cup c, an appropriate threaded through-hole can be machined separately for screw 5 to fit through.

[0019] This embodiment does not require the use of violent methods such as directly or indirectly hitting the cup c to axially move the bevel gear a, and can achieve micro-stepless adjustment of the axial movement of the bevel gear a. Since it can be micro-stepless adjusted, it is only necessary to move the bevel gear a in one direction, that is, the cup c gradually moves away from the housing b toward the flange, to meet the actual adjustment needs, so there is no need to repeatedly move the bevel gear a axially in both positive and negative directions. After adjusting the axial position of the bevel gear a, it is only necessary to measure the distance between the flange of the cup c and the housing b to obtain the thickness of the adjustment pad. During actual assembly and adjustment, an auxiliary adjustment mechanism of this embodiment can be installed for each bevel gear to improve the adjustment accuracy and efficiency. In summary, the use of this embodiment to assist in the adjustment of the bevel gear can greatly simplify the assembly and adjustment work of the bevel gear pair, greatly improve the assembly and adjustment efficiency, and reduce the process cost.

[0020] To facilitate manual rotation of the driving cylindrical gear 2, this embodiment has two handles 7 attached to the driving cylindrical gear 2 near its outer edge. The two handles 7 are evenly spaced around the axis of the driving cylindrical gear 2. By manipulating the handles 7, the rotation angle of the driving cylindrical gear 2 can be better controlled, thereby fine-tuning the axial movement of the cup c and bevel gear a.

[0021] In addition, in this embodiment, two compression springs 8 are attached to the outside of the bottom of the housing 1. The axes of the two compression springs 8 are parallel to the axis of the housing 1 and are evenly arranged around the center of the housing 1. During operation, one end of the compression spring 8 abuts the housing 1, while the other end of the compression spring 8 abuts the cup c. This eliminates the thread clearance between the screw 5 and the cup c, allowing for more precise adjustment of the axial movement of the bevel gear a. In other embodiments, the compression springs can also be placed outside the screw.

[0022] The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using the design concept of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A bevel gear assembly auxiliary adjustment mechanism, characterized in that: It includes a housing, a driving cylindrical gear is rotatably connected to the center of the housing, and at least two driven cylindrical gears of the same size are rotatably connected to the housing. All driven cylindrical gears are externally meshed with the driving cylindrical gear, and the same-side journal ends of all driven cylindrical gears are exposed to the housing. The journal ends of all driven cylindrical gears exposed to the housing are coaxially connected to a screw.

2. The bevel gear assembly auxiliary adjustment mechanism according to claim 1, characterized in that: The driven cylindrical gear has a coaxial cylindrical hole at the end of its journal, one end of the screw is a polished rod section, the polished rod section of the screw is coaxially inserted into the cylindrical hole of the driven cylindrical gear, and a pin is radially passed through the polished rod section and the driven cylindrical gear.

3. The bevel gear assembly auxiliary adjustment mechanism according to claim 1, characterized in that: At least one handle is connected to the driving cylindrical gear at an eccentric position.

4. The bevel gear assembly auxiliary adjustment mechanism according to claim 1, characterized in that: Compression springs are evenly arranged on one side of the screw rod on the shell, and the axis of the compression spring is parallel to the axis of the screw rod.

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