CN215487517U - Split type timing gear convenient to maintain - Google Patents

Abstract

The utility model discloses a split type timing gear convenient to maintain, which comprises: the gear tooth piece and the central piece are in split type layout; a plurality of connecting assemblies for connecting the gear member and the center member to constitute a timing gear body; the gear tooth piece and the central piece are coaxially arranged, and a plurality of groups of matched paired fixing holes are respectively formed in the inner wall of the gear tooth piece and the outer wall of the central piece; coupling assembling is configured to including first spliced pole and second spliced pole, the one end of first spliced pole is provided with and supplies the second spliced pole to stretch into the thread groove, second spliced pole one end is provided with the first screw thread with thread groove matched with. The utility model provides a split type timing gear convenient to maintain, which can directly replace any damaged part when the timing gear needs to be maintained through the design of a connecting component, thereby controlling the maintenance cost, and meanwhile, the weight of the gear can be effectively reduced through the matching of the split type design and the connecting component, and the complexity of processing is effectively reduced.

Description

Split type timing gear convenient to maintain

Technical Field

The utility model relates to the technical field of gear design and production. More particularly, the present invention relates to a split timing gear that is easy to maintain.

Background

Timing gears are currently the gears that perform time-scale positioning of the associated control functions in a mechanical device. The timing gear is used for ensuring the valve timing when the engine runs, so that the opening and closing of the intake valve and the exhaust valve are consistent with the motion of the piston, marks are printed on the timing gear and correspond to the marks of the crankshaft gear and the camshaft gear when the timing gear is assembled, but the common timing gear is of an integral structure, and when the gear teeth of the timing gear are damaged and need to be replaced, the integral replacement is needed, and the replacement cost is increased.

In order to solve the technical problem, some means are proposed in the prior art, such as the technology of patent application No. CN202020898611.3, which is named as a detachable timing gear, and the gear is configured into a split structure, i.e. including a gear member and a central member, and the two members are connected by fixing, during the process of inserting a non-blank fixing rod into a mounting groove in actual operation, the fixing rod can be conveniently inserted into a groove by pushing the fixing rod to compress a first spring, and after the fixing rod is released, the fixing rod returns to the original position under the action of the resilience force of the first spring, and the positioning protrusion is engaged with the positioning groove, so as to prevent the fixing rod from moving at will, although the purpose of replacing at will is achieved by the structural design of a separate tool, the mounting of the fixing rod needs a spring, which makes the matching degree and structural stability of the fixing rod with the central member and the gear member limited, and the processing complexity is higher, and the practicability is not good.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.

To achieve these objects and other advantages in accordance with the purpose of the utility model, there is provided a split timing gear for easy maintenance, comprising:

the gear tooth piece and the central piece are in split type layout;

a plurality of connecting assemblies for connecting the gear member and the center member to constitute a timing gear body;

the gear tooth piece and the central piece are coaxially arranged, and a plurality of groups of matched paired fixing holes are respectively formed in the inner wall of the gear tooth piece and the outer wall of the central piece;

coupling assembling is configured to including first spliced pole and second spliced pole, the one end of first spliced pole is provided with and supplies the second spliced pole to stretch into the thread groove, second spliced pole one end is provided with the first screw thread with thread groove matched with.

Preferably, the free ends of the first and second connecting posts are configured to have an arc-shaped portion.

Preferably, the inner side wall of the fixing hole is provided with a matched shock absorption layer.

Preferably, the shock-absorbing layer is configured to adopt a double-layer hollow rubber structure;

wherein a thickness of the shock-absorbing layer near the bottom of the fixing hole is configured to be greater than a thickness near the top of the fixing hole.

Preferably, the connecting assembly further comprises a nut matched with the free end of the first connecting column and/or the second connecting column;

wherein, the periphery of the fixing hole is provided with a limiting groove with the inner diameter larger than the outer diameter of the fixing hole;

the outer edge of one end of the nut, which is matched with the fixing hole, is provided with an extending part matched with the limiting groove in an extending way, so that the inner wall of the nut is in a step-shaped structure in space;

and the limiting groove, the nut, the first connecting column and/or the second connecting column are fixedly connected through matched second threads.

Preferably, a key groove matched with the fixed shaft is arranged at the axis of the central piece;

the outer edge of the gear piece is provided with gear teeth matched with the external structure;

wherein a thickness of the center piece is configured to be greater than a thickness of the gear piece.

Preferably, the end of the second connecting column, which is engaged with the first connecting column, is configured to be T-shaped, and the open end of the thread groove is provided with a stop portion.

The utility model has the advantages that firstly, through the design of the connecting component, the timing gear can be directly separated and replaced by any damaged part when needing maintenance, the maintenance cost is controlled, meanwhile, through the matching of the split design and the connecting component, the weight of the gear can be effectively reduced, and further through the limitation of the structure and the connecting mode of the connecting component, the complexity of the processing and the assembly of the split gear is effectively reduced, and the practicability is better.

Secondly, the structure of the connecting component is designed, and the connecting component is matched with the fixing hole, so that the assembly of the central component and the gear component can be rapidly completed, and the assembly efficiency is improved.

Thirdly, the structure of the nut is improved, and the design of the limiting groove is matched, so that the connection stability of the connecting component, the gear tooth component and the central component is further controlled, and the physical stability and the service life of the structural component are ensured.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic diagram of a split timing gear for ease of maintenance in accordance with an embodiment of the present invention;

FIG. 2 is a schematic illustration in partial cross-sectional view of a gear tooth member in accordance with an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a connecting assembly according to another embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a shock-absorbing shell according to another embodiment of the present invention; .

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It is to be understood that in the description of the present invention, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are used only for convenience in describing the present invention and for simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless otherwise specifically stated or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are used broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.

Further, in the present invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

FIGS. 1-3 illustrate a split timing gear implementation for ease of maintenance according to the present invention, including:

the gear piece 1 and the central piece 2 are arranged in a split manner;

the structure is characterized in that the plurality of connecting assemblies 3 are used for connecting the gear piece and the central piece to form a timing gear body, in the structure, the split gear piece and the central piece are connected through the connecting assemblies to form an integrated structure when in use, and meanwhile, any damaged part can be replaced separately during maintenance, so that the maintenance cost is controlled, and meanwhile, the quality of the timing gear body can be reduced through the split design;

the gear tooth piece and the central piece are coaxially arranged, the uniformity of the transmission of the working force of the gear tooth piece and the central piece is ensured through the coaxial arrangement, the stress size after the gear tooth piece and the central piece are controllable, matched groups of fixing holes 4 which are arranged in pairs are respectively arranged on the inner wall of the gear tooth piece and the outer wall of the central piece and are used for installing the connecting component through the paired fixing holes arranged on the gear piece, the paired fixing holes mean that one fixing hole is arranged on the gear tooth piece, and the central piece can be correspondingly provided with one fixing hole which is matched with the fixing hole to complete the connection and the transmission of the moment;

the connecting assembly is configured to comprise a first connecting column 5 and a second connecting column 6, one end of the first connecting column is provided with a thread groove 7 for the second connecting column to extend into, one end of the second connecting column is provided with a first thread matched with the thread groove, in the structure, the connecting assembly comprises two independent first connecting columns and two independent second connecting columns, and one matched ends of the first connecting columns and the second connecting columns are connected through the thread groove and the thread, so that the length of the connecting assembly can be adjusted as required, the connecting assembly is firstly inserted into a fixed hole on a central piece or a gear tooth piece during assembly, and the first connecting columns and the second connecting columns are rotated to adjust the length of the connecting assembly, so that the free ends of the connecting assembly can smoothly extend into the corresponding fixed holes to complete connection, in actual operation, the external gear tooth piece can be initially connected through each connecting assembly on the central piece, after each connecting component is connected, the stability and the fastening degree of the connection are further adjusted.

In another example, the free ends of the first and second connection posts are configured to have an arc-shaped portion (not shown) for ensuring smooth connection of the devices and reducing damage to the fixing hole during rotation connection.

In another example, as shown in fig. 3, the inner side wall of the fixing hole is provided with a shock absorbing layer 8 which is matched with the inner side wall of the fixing hole and is used for dispersing the force and the vibration transmitted to the gear member by the central member and reducing the mutual interference and the vibration generated in the use process.

In another example, the damping layer is configured to adopt a double-layer hollow rubber structure, and the double-layer hollow rubber structure is designed to have a deformation allowance, so that the reliability of the connecting component in fixing and the tightness of matching with the fixing hole are ensured;

wherein, the thickness that the buffer layer is close to the fixed orifices bottom is configured to be greater than the thickness that is close to the fixed orifices top, and in this kind of structure, through the structural design to the buffer layer for coupling assembling when rotatory fixing, the extrusion buffer layer that can be continuous, and then all gaps fill in with the fixed orifices, guarantee the degree of cooperation of its structure.

1-3, in another example, the connection assembly further comprises a nut 9 cooperating with the free end of the first and/or second connection post;

in actual operation, the inner diameter of the limiting groove is larger than the outer diameter, so that the limiting groove is provided with two grooves with annular structures in space, and the two grooves are respectively used for being in threaded connection with the connecting component and the nut, and the matching stability between the structures is ensured;

in the structure, the nut is respectively matched and connected with the first connecting column or the second connecting column and the limiting groove in space through the arrangement of the extension part, so that the stability of the timing gear during working is ensured;

it is fixed to connect through the matched with second screw between limit slot, nut, first spliced pole and/or the second spliced pole, in actual operation, the nut is close to earlier in coupling assembling's center department, after coupling assembling accomplished the centre piece and is connected with the teeth of a cogwheel spare, make its position move towards the direction of fixed orifices through swivel nut, last swivel nut, until the extension enters into to limit the slot, further make coupling assembling and the degree of cooperation of centre piece or teeth of a cogwheel spare, connection stability is better.

In another example, as shown in fig. 1, a key slot 12 matched with a fixed shaft is arranged at the axis of the central piece;

the outer edge of the gear piece is provided with gear teeth 13 matched with the outer structure;

wherein the thickness of the center piece is configured to be greater than that of the gear tooth piece, in this structure, the connection of the timing gear with other components is accomplished through the cooperation of the key groove and the gear tooth, the force transmission is realized, and the thickness of the center piece is set to be greater than that of the gear tooth piece, which is used for increasing the stability of the structure and ensuring the service life thereof.

In another example, the one end that the second spliced pole and first spliced pole cooperate is configured to be T shape structure, the open end of thread groove is provided with matched with backstop portion (not shown), stop portion is set up to the loop configuration in this kind of structure to make things convenient for the second spliced pole to wear out, and backstop portion and first spliced pole adopt welded mode to be connected, further cooperation through backstop portion and T shape end (first screw thread setting is served at T shape), accomplish the restriction to coupling assembling extension length, guarantee simultaneously that each coupling assembling's stroke (maximum length) has the uniformity, guarantee that it is connected the back at completion wheel tooth spare and centre piece, the two still is in coaxial state, guarantee the stability of its structure.

The above embodiments are merely illustrative of a preferred embodiment, but not limiting. When the utility model is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.

The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

While embodiments of the utility model have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the utility model not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims (7)

1. A split timing gear convenient to maintain, comprising:

the gear tooth piece and the central piece are in split type layout;

a plurality of connecting assemblies for connecting the gear member and the center member to constitute a timing gear body;

the gear tooth piece and the central piece are coaxially arranged, and a plurality of groups of matched paired fixing holes are respectively formed in the inner wall of the gear tooth piece and the outer wall of the central piece;

coupling assembling is configured to including first spliced pole and second spliced pole, the one end of first spliced pole is provided with and supplies the second spliced pole to stretch into the thread groove, second spliced pole one end is provided with the first screw thread with thread groove matched with.

2. The split timing gear for ease of maintenance as set forth in claim 1, wherein the free ends of said first and second connecting posts are configured with arcuate portions.

3. The split timing gear for easy maintenance as claimed in claim 1, wherein the inner sidewall of the fixing hole is provided with a damping layer fitted thereto.

4. The split timing gear for ease of maintenance as set forth in claim 3 wherein said shock absorbing layer is configured to be of a double layer hollow rubber construction;

wherein a thickness of the shock-absorbing layer near the bottom of the fixing hole is configured to be greater than a thickness near the top of the fixing hole.

5. The split timing gear for ease of maintenance as set forth in claim 1, wherein said coupling assembly further comprises a nut for engaging a free end of the first coupling post and/or the second coupling post;

wherein, the periphery of the fixing hole is provided with a limiting groove with the inner diameter larger than the outer diameter of the fixing hole;

the outer edge of one end of the nut, which is matched with the fixing hole, is provided with an extending part matched with the limiting groove in an extending way, so that the inner wall of the nut is in a step-shaped structure in space;

and the limiting groove, the nut, the first connecting column and/or the second connecting column are fixedly connected through matched second threads.

6. The split timing gear for easy maintenance as claimed in claim 1, wherein a key groove for fitting with the fixed shaft is provided at the axial center of the center member;

the outer edge of the gear piece is provided with gear teeth matched with the external structure;

wherein a thickness of the center piece is configured to be greater than a thickness of the gear piece.

7. The split timing gear for easy maintenance as claimed in claim 1, wherein the end of the second connecting post that mates with the first connecting post is configured in a T-shaped configuration, and the open end of the thread groove is provided with a mating stop.

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