CN215589013U - Camshaft gear assembling tool - Google Patents

Abstract

The utility model belongs to the technical field of engines, and particularly relates to a camshaft gear assembling tool. The camshaft gear assembling tool comprises a support and a first positioning assembly, wherein a first positioning hole is formed in the side face of the support, the first positioning assembly comprises a body, a fixing assembly and an adjusting assembly, one end of the body is matched with the first positioning hole, the adjusting assembly is partially installed at the other end of the body, the fixing assembly penetrates through one end of the body and can fix one end of the adjusting assembly, and the other end of the adjusting assembly can axially displace in the body and can extend out of the body. Through using camshaft gear erecting tool among this technical scheme for adjusting part's the other end can carry out axial displacement and can stretch out the body at this internal, can guarantee to carry out the barring operation under the condition of not dismantling camshaft gear erecting tool, has promoted convenient degree.

Description

Camshaft gear assembling tool

Technical Field

The utility model belongs to the technical field of engines, and particularly relates to a camshaft gear assembling tool.

Background

In the prior art, timing marks are marked on all gears on a gear train associated with valve timing, and each gear has a dot or a score line as a mark tooth to convey the timing position. When an engine camshaft is installed, an engine flywheel rotates to an OT scale marking position, then when relevant gears on a gear transmission chain are installed, mark teeth on each gear are meshed with mark teeth of meshed gears, then each gear is installed sequentially from bottom to top, the mark teeth of the gears meshed up and down must be meshed with each other in the period, and finally, the mark teeth of a camshaft timing gear on the camshaft are meshed with mark teeth of an idler gear below the camshaft timing gear to determine the correct timing of the camshaft.

Camshaft gear assembly tool need carry out the barring operation if meet the condition that the tooth's socket can not be put into to directional pole in operation process to need carry out the dismouting again to assembly tool, complex operation and inconvenience, in addition, assembly tool's locating lever is fine fragile, damages easily, can not guarantee the security of locating lever.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve the problem that the assembly tool is inconvenient to operate in the operation process. The purpose is realized by the following technical scheme:

a first aspect of the present invention provides a camshaft gear assembling tool, including:

the side surface of the bracket is provided with a first positioning hole;

the first positioning assembly comprises a body, a fixing assembly and an adjusting assembly, one end of the body is matched with the first positioning hole, the adjusting assembly is partially installed at the other end of the body, the fixing assembly penetrates through one end of the body and can fix one end of the adjusting assembly, and the other end of the adjusting assembly can axially displace in the body and can stretch out of the body.

Through using camshaft gear erecting tool among this technical scheme, first locating component adopts the body, fixed subassembly and adjusting part's integrated configuration, make adjusting part's the other end can carry out axial displacement and can stretch out the body at this internal, because adjusting part's the other end is towards the camshaft gear of engine, under the unsafe condition of gear location, the barring operation needs to be carried out, because adjusting part can stretch out and draw back, can guarantee to carry out the barring operation under the condition of not dismantling camshaft gear erecting tool, the convenience is promoted, the security that can also ensure adjusting part simultaneously.

In addition, the camshaft gear assembly tool according to the present invention may also have the following additional technical features:

in some embodiments of the utility model, an end surface of the other end of the body is provided with an adjustment hole, and the adjustment assembly is partially installed in the adjustment hole.

In some embodiments of the present invention, the one end of the body has a fixing hole provided in a radial direction, the fixing member is fitted with the fixing hole, and the fixing hole is communicated with the adjusting hole.

In some embodiments of the utility model, a side surface of the other end of the body is provided with a sliding groove, and the sliding groove is communicated with the adjusting hole.

In some embodiments of the present invention, the adjusting assembly includes a push rod, an elastic element, and a pointing rod, the elastic element and the pointing rod are both disposed in the adjusting hole, one end of the elastic element is connected to the fixing assembly located in the fixing hole, and the bottom end of the push rod sequentially passes through the other end of the elastic element and one end of the pointing rod close to the elastic element and can move in the sliding groove, so as to drive the pointing rod to displace in the adjusting hole.

In some embodiments of the utility model, the fixing assembly comprises a bolt and a nut, the bolt being capable of passing through an end of the resilient element located within the fixing hole and engaging with the nut.

In some embodiments of the present invention, opposite sides near one end of the sliding groove are respectively provided with a first wedge structure and a second wedge structure, and a distance dimension between the first wedge structure and the second wedge structure is equal to or larger than a width dimension of the push rod.

In some embodiments of the present invention, a side of the middle portion of the push rod, which is far away from the fixing component, is provided with a protruding structure, and the protruding structure is respectively arranged corresponding to the first wedge-shaped structure and the second wedge-shaped structure.

In some embodiments of the utility model, the width dimension of the protruding structure is greater than the distance dimension between the first wedge structure and the second wedge structure.

In some embodiments of the present invention, a side of the bottom end of the push rod facing the pointing rod is provided with a groove, a gap is provided between the bottom end of the groove and the bottom side of the one end of the pointing rod, and the height dimension of the gap is equal to or greater than the height dimension of the protruding structure.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically shows an overall structural view of a camshaft gear assembling tool according to an embodiment of the present invention;

FIG. 2 is a schematic front view of the camshaft gear assembly tool of FIG. 1;

FIG. 3 is an exploded view of the camshaft gear assembly tool of FIG. 1;

FIG. 4 is an exploded view of a first positioning assembly of the camshaft gear assembly tool of FIG. 1;

FIG. 5 is a cross-sectional view of a first positioning assembly of the camshaft gear assembly tool of FIG. 4;

FIG. 6 is an enlarged cross-sectional view of a portion of the first positioning assembly of the camshaft gear assembly tool of FIG. 5;

FIG. 7 schematically illustrates a first state in which a push rod and a slide groove of a camshaft gear assembling tool are engaged, according to an embodiment of the present invention;

FIG. 8 schematically illustrates a second state in which a push rod and a slide groove of the camshaft gear assembling tool are engaged, according to the embodiment of the present invention;

fig. 9 schematically shows an overall structural view of a camshaft gear assembling tool according to an embodiment of the present invention, which is respectively coupled with a camshaft gear and a cylinder head.

1: a camshaft gear assembly tool;

10: support, 11: first positioning hole, 12: second positioning hole, 13: first mounting hole, 14: second mounting hole, 20: first positioning assembly, 21: body, 211: adjustment holes, 212: fixing hole, 213: sliding groove, 2131: first wedge structure, 2132: second wedge structure, 221: bolt, 222: nut, 231: push rod, 2311: bump structure, 2312: groove, 2313: gap, 232: elastic element, 233: pointing stick, 2331: connection hole, 30: second positioning member, 40: crankshaft timing positioning tool, 50: a fixing member;

2: a cylinder head;

3: a camshaft gear.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1 schematically shows an overall structural view of a camshaft gear assembling tool according to an embodiment of the present invention. Fig. 2 is a front view schematic diagram of the camshaft gear assembly tool in fig. 1. Fig. 3 is an exploded view of the camshaft gear assembly tool of fig. 1. Fig. 4 is an exploded view of the first positioning assembly 20 of the camshaft gear assembly tool of fig. 1. As shown in fig. 1, 2, 3 and 4, the present invention proposes a camshaft gear assembly tool. The camshaft gear assembling tool 1 comprises a support 10 and a first positioning component 20, a first positioning hole 11 is formed in the side face of the support 10, the first positioning component 20 comprises a body 21, a fixing component and an adjusting component, one end of the body 21 is matched with the first positioning hole 11, the adjusting component is partially installed at the other end of the body 21, the fixing component penetrates through one end of the body 21 and can fix one end of the adjusting component, and the other end of the adjusting component can axially displace in the body 21 and can extend out of the body 21.

Through using camshaft gear erecting tool 1 among this technical scheme, first locating component 20 adopts body 21, the integrated configuration of fixed subassembly and adjusting part, make adjusting part's the other end can carry out axial displacement and can stretch out body 21 in body 21, because adjusting part's the other end is towards camshaft gear 3 of engine, under the unsafe condition of gear location, the barring operation needs to be carried out, because adjusting part can stretch out and draw back, can guarantee to carry out the barring operation under the condition of not dismantling camshaft gear erecting tool 1, the convenience is promoted, the security of adjusting part can also be ensured simultaneously.

In some embodiments of the present invention, as shown in fig. 5, the end surface of the other end of the body 21 is provided with an adjustment hole 211, and the adjustment assembly is partially installed in the adjustment hole 211. The adjusting hole 211 is used for providing an installation space and a moving space for the adjusting assembly, so that the adjusting assembly can move in the adjusting hole 211 conveniently, and the telescopic function of the adjusting assembly is realized.

In some embodiments of the present invention, as shown in fig. 5, one end of the body 21 has a fixing hole 212 provided in a radial direction, and the fixing member is engaged with the fixing hole 212, the fixing hole 212 communicating with the adjusting hole 211. The fixing component penetrates through one end of the adjusting component positioned in the fixing hole 212, so that the fixing effect of one end of the adjusting component is realized, and the stability of one end of the adjusting component is improved.

In some embodiments of the present invention, as shown in fig. 5, the other end of the body 21 is provided at a side thereof with a sliding groove 213, and the sliding groove 213 communicates with the adjustment hole 211. When the operation personnel control adjusting part and remove in sliding tray 213, can also drive adjusting part and carry out the operation that stretches out and draws back, when realizing the installation and the location in right time of engine camshaft gear 3, ensured adjusting part's security, in addition, can also guarantee to carry out the barring operation under the condition of not dismantling camshaft gear erecting tool 1, promoted convenient degree.

In some embodiments of the present invention, as shown in fig. 4 and 5, the adjusting assembly includes a push rod 231, an elastic element 232, and a pointing rod 233, the elastic element 232 and the pointing rod 233 are both disposed in the adjusting hole 211, one end of the elastic element 232 is connected to the fixing assembly located in the fixing hole 212, and a bottom end of the push rod 231 sequentially passes through the other end of the elastic element 232 and one end of the pointing rod 233 close to the elastic element 232 and can move in the sliding groove 213, so as to drive the pointing rod 233 to displace in the adjusting hole 211. The elastic element 232 in this embodiment is a spring, and the fixing component is engaged with the fixing hole 212 and can connect one end of the spring, thereby fixing one end of the spring. The other end of the spring is sleeved at the bottom end of the push rod 231, so that the operation of the push rod 231 for stretching the spring is realized. Wherein, the bottom of push rod 231 still wears to locate the one end of directional pole 233, make the other end of spring, the bottom of push rod 231 links together with the one end of directional pole 233 like this, thereby realize that the operating personnel promotes the push rod 231 that is located the sliding tray 213, push rod 231 drives directional pole 233 and carries out the purpose of axial displacement, make directional pole 233 can stretch out body 21 or withdraw the operation to body 21 in, when carrying out the installation and the timing location of engine camshaft gear 3, both ensure adjusting part's security, can also accurately carry out installation and the timing location to camshaft gear 3.

In some embodiments of the present invention, as shown in fig. 4, the fixing assembly includes a bolt 221 and a nut 222, and the bolt 221 can pass through one end of the elastic member 232 positioned in the fixing hole 212 and cooperate with the nut 222. In this embodiment, the side surface of one end of the body 21 and the positions where the head of the bolt 221 and the nut 222 are matched are both provided with a counter bore structure, so that the head of the bolt 221 and the nut 222 are both located in the counter bore structures under the condition that the head of the bolt 221 and the nut 222 are matched with the fixing hole 212, and when one end of the body 21 is matched with the first positioning hole 11, the interference of the fixing component cannot occur, and the reliability is improved.

In some embodiments of the present invention, as shown in fig. 7 and 8, a first wedge structure 2131 and a second wedge structure 2132 are respectively disposed on two opposite sides of one end of the sliding groove 213 (i.e., the end of the sliding groove 213 away from the fixing assembly), and the distance between the first wedge structure 2131 and the second wedge structure 2132 is equal to or greater than the width of the push rod 231. The two wedge structures are used for clamping the push rod 231, when the push rod 231 crosses the wedge structures to reach an extreme position of one end of the sliding groove 213 (namely, the end of the sliding groove 213 far away from the fixed component), the push rod 231 can be in a locked state due to the wedge structures at the moment, retraction operation cannot be performed due to the elastic force of the spring, and timing and positioning operation can be performed by matching with the camshaft gear 3 at the moment.

In some embodiments of the present invention, as shown in fig. 4, a protrusion 2311 is provided on a side of the middle portion of the push rod 231 away from the fixing assembly, and the protrusion 2311 is respectively provided corresponding to the first wedge 2131 and the second wedge 2132. The protrusion 2311 abuts against the wedge-shaped structure, and when the push rod 231 reaches an extreme position of one end of the sliding groove 213 far away from the fixing component (i.e. the end of the sliding groove 213 far away from the fixing component), the protrusion 2311 can abut against the wedge-shaped structure, so that a locking state is performed, and a subsequent timing positioning operation is realized.

In some embodiments of the utility model, the width dimension of raised structure 2311 is greater than the distance dimension between first wedge 2131 and second wedge 2132. This enables the projection 2311 on the push rod 231 to abut against the wedge-shaped structure to achieve the locked state when the timing positioning operation of the extreme position of the slide groove 213 is performed.

In some embodiments of the present invention, as shown in fig. 5, 7, 8 and 9, the bottom end of the push rod 231 is provided with a groove 2312 toward a side directed toward the lever 233, and a gap 2313 is provided between the bottom end of the groove 2312 and a bottom side directed toward an end of the lever 233, and a height dimension of the gap 2313 is equal to or greater than a height dimension of the protrusion 2311. Before the push rod 231 reaches the limit position of one end of the sliding groove 213 far away from the fixing assembly, the push rod 231 can be clamped by the wedge-shaped structure on the sliding groove 213, because a gap 2313 is formed between the bottom end of the push rod 231 and the bottom side of the end pointing to the rod 233, and the height dimension of the gap 2313 is equal to or greater than that of the protrusion 2311, the push rod 231 can be increased by the height dimension of the gap 2313 so as to span the wedge-shaped structure, and finally reach the limit position of the sliding groove 213 (namely, the end of the sliding groove 213 far away from the fixing assembly), at the moment, the push rod 231 is reduced by the height dimension of the gap 2313, and the protrusion 2311 on the push rod 231 can be abutted against the wedge-shaped structure, so that the locking state of the push rod 231 can be realized, the resilience of the spring can be blocked, and the timing and positioning operations can be carried out by matching with the camshaft gear 3.

Specifically, as shown in fig. 4, a connection hole 2331 is formed in one end of the pointing rod 233 close to the spring, the connection hole 2331 is matched with the bottom end of the push rod 231, and meanwhile, since the bottom end of the push rod 231 is provided with a groove 2312, the push rod 231 located in the connection hole 2331 can stably drive the pointing rod 233 to move during operation, so that the situation that the push rod 231 is separated from the pointing rod 233 does not occur, and the reliability is improved.

In some embodiments of the present invention, as shown in fig. 3, the side surface of the bracket 10 is provided with a second positioning hole 12, and the second positioning hole 12 and the first positioning hole 11 are spaced apart.

In some embodiments of the present invention, as shown in fig. 3, the camshaft gear assembly tool 1 further includes a second positioning member 30, and the second positioning member 30 is engaged with the second positioning hole 12.

In some embodiments of the present invention, as shown in fig. 3, at least one second mounting hole 14 is formed at the top end of the bracket 10, and the at least one second mounting hole 14 is used to fix the bracket 10 to the engine head.

In some embodiments of the present invention, as shown in fig. 3, the camshaft gear 3 assembling tool 1 further includes a crankshaft timing positioning tool 40, the crankshaft timing positioning tool 40 is configured to be engaged with the first mounting hole 13 on the side surface of the bracket 10, and the crankshaft timing positioning tool 40 is fixed to the bracket 10 when not in use and is removed for separate use when in use.

Further, as shown in fig. 9, the operation process of the camshaft gear assembling tool 1 according to the present invention is:

1. and (3) independently taking down the crankshaft timing positioning tool 40, aligning the flywheel housing to the OT line, taking off the crankshaft speed sensor, and inserting the crankshaft timing positioning tool 40 to ensure the accuracy of the position of the flywheel housing.

2. The push rod 231 is pushed along the sliding slot 213, and the pointing rod 233 connected to the push rod 231 is pushed to an end of the sliding slot 213 (i.e., an end of the sliding slot 213 away from the fixing component).

3. The camshaft gear assembly tool 1 is fixed to the engine cylinder head 2 by the fitting of the fixing member 50 and the second mounting hole 14, and it is checked whether the pointing rod 233 of the first positioning member 20 can be placed in the gear groove of the gear.

4. If the pointing stick 233 cannot be placed in the tooth socket, the pointing stick 233 is pushed back to the other end of the sliding groove 213 (i.e., the end of the sliding groove 213 near the fixed component), the crankshaft timing positioning tool 40 is pulled out, the turning is performed for 360 °, and then the steps 1-3 are repeated until the pointing stick 233 of the first positioning component 20 can be placed in the tooth socket of the gear, indicating that the OT state is correct.

5. If the OT state is correct, the cam timing gear is meshed with the marked teeth based on the teeth pointed by the second positioning rod (marked).

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A camshaft gear assembly tool, comprising:

the side surface of the bracket is provided with a first positioning hole;

the first positioning assembly comprises a body, a fixing assembly and an adjusting assembly, one end of the body is matched with the first positioning hole, the adjusting assembly is partially installed at the other end of the body, the fixing assembly penetrates through one end of the body and can fix one end of the adjusting assembly, and the other end of the adjusting assembly can axially displace in the body and can stretch out of the body.

2. A camshaft gear assembly tool as set forth in claim 1 wherein an end surface of said other end of said body is provided with an adjustment bore in which said adjustment assembly is partially mounted.

3. A camshaft gear assembly tool as set forth in claim 2 wherein said one end of said body has a fixing hole disposed in a radial direction, said fixing member being engaged with said fixing hole, said fixing hole being in communication with said adjustment hole.

4. A camshaft gear assembling tool as set forth in claim 3, wherein a side surface of said other end of said body is provided with a slide groove, said slide groove communicating with said adjustment hole.

5. The camshaft gear assembly tool of claim 4, wherein the adjusting assembly comprises a push rod, an elastic element and a pointing rod, the elastic element and the pointing rod are both arranged in the adjusting hole, one end of the elastic element is connected with the fixing assembly in the fixing hole, and the bottom end of the push rod sequentially penetrates through the other end of the elastic element and one end of the pointing rod close to the elastic element and can move in the sliding groove, so that the pointing rod is driven to displace in the adjusting hole.

6. A camshaft gear assembly tool as set forth in claim 5 wherein said fixing assembly includes a bolt and a nut, said bolt being capable of passing through one end of said resilient member located within said fixing hole and engaging said nut.

7. A camshaft gear assembly tool according to claim 5, wherein opposite sides near one end of the sliding slot are provided with a first wedge structure and a second wedge structure, respectively, and the distance dimension between the first wedge structure and the second wedge structure is equal to or greater than the width dimension of the push rod.

8. The camshaft gear assembly tool of claim 7, wherein a side of the middle portion of the push rod away from the fixed component is provided with a protruding structure, and the protruding structures are respectively arranged corresponding to the first wedge structure and the second wedge structure.

9. The camshaft gear assembly tool of claim 8 wherein a width dimension of the raised feature is greater than a distance dimension between the first wedge feature and the second wedge feature.

10. The camshaft gear assembly tool of claim 8, wherein a side of the bottom end of the push rod facing the direction rod is provided with a groove, a bottom end of the groove and a bottom side of the one end of the direction rod have a gap therebetween, and a height dimension of the gap is equal to or greater than a height dimension of the boss structure.

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