Turning gear

Abstract

The utility model discloses a turning gear, and belongs to the field of engine turning. The turning gear comprises a base; the movement mechanism is in sliding connection with the base so as to move relative to the base; the turning gear mechanism is elastically connected with the movement mechanism, and the turning gear mechanism can retract and reset in the axial direction of the turning gear mechanism; and the driving device is in driving connection with the turning mechanism. The technical problem that an existing turning gear is difficult to mesh with an engine is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine cranking, in particular to a cranking device. Background Art

[0002] Cranking refers to the operation of turning a certain part of the engine to drive the piston-connecting rod mechanism, valve train, gear train, etc. During the production process of the engine, cranking is required to complete multiple steps such as valve clearance adjustment, fuel advance angle adjustment, and compression clearance measurement. Valve clearance, fuel advance angle, and compression clearance will affect the working state of the engine. Therefore, it is very necessary to crank the engine during the production process. There are usually two ways to crank the engine. The first is to use the crankshaft as the focus point and complete the cranking by rotating the crankshaft; the second is to use the flywheel as the focus point and complete the cranking by rotating the flywheel.

[0003] When the cranking mechanism and the engine are engaged, they need to be precisely aligned to achieve engagement. When the current cranking device is in use, it takes a long time for the cranking mechanism and the engine to engage. Therefore, the current cranking device has a technical problem that it is difficult to engage with the engine. Utility Model Content

[0004] The main purpose of the utility model is to provide a cranking device, aiming to solve the technical problem that the current cranking device is difficult to engage with the engine.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a turning device, which comprises:

[0006] Base;

[0007] A motion mechanism, the motion mechanism being slidably connected to the base to move relative to the base;

[0008] A turning mechanism, wherein the turning mechanism is elastically connected to the motion mechanism and can be retracted and reset along its own axial direction;

[0009] A driving device is drivingly connected to the winch mechanism.

[0010] Optionally, in an embodiment of the utility model, the barring mechanism is elastically connected to the motion mechanism via a floating spline, and the floating spline comprises:

[0011] a first connecting plate;

[0012] a second connecting plate, wherein the first connecting plate and the second connecting plate are spaced a predetermined distance apart, and the second connecting plate is connected to the turning mechanism;

[0013] A track rod, one end of which is fixedly connected to the first connecting plate, and the second connecting plate is slidably sleeved on the other end of the track rod;

[0014] An elastic member is sleeved on the outer circumference of the track rod, and one end of the elastic member abuts against the second connecting plate.

[0015] Optionally, in an embodiment of the utility model, the turning mechanism has an engagement end, the engagement end includes an end body and a turning column, a plurality of the turning columns are evenly distributed around the circumference of the end body, and a turning groove is provided between two adjacent turning columns.

[0016] Optionally, in an embodiment of the utility model, three turning gear columns are provided, and the turning gear columns are in the shape of fan-shaped columns.

[0017] Optionally, in an embodiment of the present invention, the elastic member is a spring.

[0018] Optionally, in an embodiment of the present utility model, the motion mechanism includes:

[0019] A vertical slide, the vertical slide being slidably connected to the base;

[0020] A first driving cylinder, the first driving cylinder drivingly connected to the vertical slide;

[0021] A lifting frame, the lifting frame is slidably connected to the vertical slide, and the turning mechanism is placed on the lifting frame;

[0022] a first lifting motor, wherein the first lifting motor drives the lifting frame;

[0023] A second driving cylinder is drivingly connected to the turning mechanism.

[0024] Optionally, in an embodiment of the utility model, the turning device further comprises a control center, the control center is communicatively connected with the first driving cylinder, the first lifting motor and the second driving cylinder, and the first lifting motor is a servo motor.

[0025] Optionally, in an embodiment of the utility model, the motion mechanism further includes two guide rail chains, one of the two guide rail chains cooperates with the first driving cylinder, and the other cooperates with the first lifting motor.

[0026] Optionally, in an embodiment of the present invention, the driving device is an electric motor.

[0027] Optionally, in an embodiment of the present invention, the base includes a bracket, and a rubber pad is provided on the bracket.

[0028] Compared with the prior art, the utility model can at least achieve the following beneficial effects. After the engine is assembled and rolled off the production line, it is necessary to perform a cranking operation on the engine. One cranking method is to engage the cranking mechanism with the flywheel of the engine, and the cranking mechanism drives the flywheel to rotate to complete the cranking. The cranking mechanism and the flywheel need to be precisely engaged to ensure that the subsequent cranking mechanism can smoothly drive the flywheel to rotate to complete the cranking. Therefore, the cranking mechanism and the engine flywheel need to be precisely aligned during engagement. However, during the alignment process, it is necessary to adjust the position of the cranking mechanism and the rotation angle of the cranking mechanism to ensure engagement. The above operations take a long time and require operator intervention. In this scheme, after the winching mechanism is aligned with the flywheel in position, the winching mechanism is close to the flywheel. When the rotation angle of the winching mechanism cannot accurately mesh with the flywheel, the flywheel squeezes the winching mechanism, the winching mechanism axially retracts and abuts against the flywheel, the winching process starts, the winching mechanism rotates, and when the winching mechanism rotates to an angle that can accurately mesh with the flywheel, the winching mechanism resets and extends into the corresponding position of the flywheel, so that the winching mechanism completes meshing with the flywheel and drives the flywheel to rotate to complete the winching. The elastic connection makes it unnecessary to adjust the rotation angle of the winching mechanism when the winching mechanism meshes with the flywheel, shortens the adjustment time of the winching mechanism, and solves the technical problem that the current winching device is difficult to mesh with the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 This is a structural schematic diagram of a turning device of the utility model;

[0031] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0032] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0033] Figure 4 This is a top view of a turning device of the utility model;

[0034] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0035] Figure 6 The utility model is a side view of a turning device.

[0036] Description of Figure Numbers:

[0037] 100, base; 110, bracket; 120, rubber pad; 200, motion mechanism; 210, vertical slide; 220, first driving cylinder; 230, lifting frame; 240, first lifting motor; 250, second driving cylinder; 260, guide rail chain; 300, turning mechanism; 310, end body; 320, turning column; 330, turning groove; 400, driving device; 500, floating spline; 510, first connecting plate; 520, second connecting plate; 530, track rod; 540, elastic member; 600, control center;

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0043] Reference Figure 1 to Figure 6 , a turning device is proposed, including a base 100, a motion mechanism 200, a turning mechanism 300 and a driving device 400.

[0044] After the engine is assembled and rolled off the production line, it is necessary to perform a cranking operation on the engine. One cranking method is to engage the cranking mechanism 300 with the flywheel of the engine, and the cranking mechanism 300 drives the flywheel to rotate to complete the cranking. The cranking mechanism 300 and the flywheel need to be precisely engaged to ensure that the subsequent cranking mechanism 300 can smoothly drive the flywheel to rotate to complete the cranking. Therefore, the cranking mechanism 300 and the engine flywheel need to be precisely aligned during engagement. However, during the alignment process, it is necessary to adjust the position of the cranking mechanism 300 and the rotation angle of the cranking mechanism 300 to ensure engagement. The above operations take a long time and require operator intervention. In this solution, after the cranking mechanism 300 is aligned with the flywheel in position, the cranking mechanism 300 is close to the flywheel. When the turning angle of the cranking mechanism 300 cannot accurately mesh with the flywheel, the flywheel squeezes the cranking mechanism 300, the cranking mechanism 300 axially retracts and abuts against the flywheel, the cranking process starts, the cranking mechanism 300 rotates, and when the cranking mechanism 300 rotates to an angle that can accurately mesh with the flywheel, the cranking mechanism 300 resets and extends into the corresponding position of the flywheel, so that the cranking mechanism 300 completes meshing with the flywheel and drives the flywheel to rotate to complete the cranking. The elastic connection makes it unnecessary to adjust the turning angle of the cranking mechanism 300 when the cranking mechanism 300 meshes with the flywheel, shortens the adjustment time of the cranking mechanism 300, and solves the technical problem that the current cranking device is difficult to mesh with the engine.

[0045] Further, in one embodiment, a floating spline 500 is used to realize an elastic connection between the barring mechanism 300 and the motion mechanism 200. Specifically, the floating spline 500 includes:

[0046] A first connecting plate 510;

[0047] A second connecting plate 520, the first connecting plate 510 and the second connecting plate 520 are arranged at a predetermined distance, and the second connecting plate 520 is connected to the turning mechanism 300;

[0048] A track rod 530, one end of which is fixedly connected to the first connecting plate 510, and the second connecting plate 520 is slidably sleeved on the other end of the track rod 530;

[0049] The elastic member 540 is sleeved on the outer circumference of the track rod 530 , and one end of the elastic member 540 abuts against the second connecting plate 520 .

[0050] The floating spline 500 structure enables the second connecting plate 520 to drive the barring mechanism 300 to retract along the axial direction of the barring mechanism 300 after the barring mechanism 300 is subjected to an external force, and after the external force disappears, the elastic member 540 can drive the barring mechanism 300 to reset, so that the barring mechanism 300 can mesh with the flywheel. Specifically, the elastic member 540 can be selected as a spring.

[0051] One end of the track rod 530 is fixedly connected to the first connecting plate 510, and the second connecting plate 520 is arranged on the other side of the track rod 530, and the second connecting plate 520 is slidably connected to the track rod 530. The track rod 530 serves to limit the movement of the second connecting plate 520, ensuring that the position of the winch mechanism 300 relative to the flywheel does not change during the retraction and reset process. Specifically, three track rods 530 are evenly arranged along the circumference of the first connecting plate 510.

[0052] The cranking mechanism 300 includes an end body 310 and three cranking posts 320 evenly distributed around the end body 310, and a cranking slot 330 is formed between two adjacent cranking posts 320. Before the engine is cranked, three bolts are usually screwed into the flywheel evenly along its circumference. When the cranking mechanism 300 is engaged with the flywheel, each bolt extends into the cranking slot 330 respectively. At the beginning of cranking, the cranking post 320 rotates so that the side wall of the cranking post 320 abuts against the bolt, and the flywheel rotates through the cranking post 320 to drive the bolt to complete the cranking. When the turning mechanism 300 is close to the flywheel and meshed with the flywheel, if the bolt fails to directly extend into the turning slot 330, the end face of the turning column 320 abuts against the end of the bolt, the turning mechanism 300 retracts, the driving device 400 starts, and the turning mechanism 300 starts to rotate, so that the turning slot 330 is aligned with the bolt. At this time, the pressure of the bolt on the turning column 320 disappears, the turning mechanism 300 is reset, and the side wall of the turning column 320 abuts against the bolt, completing the meshing of the turning mechanism 300 and the flywheel.

[0053] The driving device 400 can be selected as an electric motor, and a coupling is provided at the same time, and the coupling is used to realize the driving of the motor for the turning mechanism 300. After the coupling is provided, the starting of the electric motor can be protected, and overload can be prevented, thereby reducing the possibility of damage to the electric motor.

[0054] Furthermore, the motion mechanism 200 includes:

[0055] A vertical slide 210, the vertical slide 210 is slidably connected to the base 100;

[0056] A first driving cylinder 220, the first driving cylinder 220 drives and connects to the vertical slide 210;

[0057] A lifting frame 230, the lifting frame 230 is slidably connected to the vertical slide 210, and the turning mechanism 300 is placed on the lifting frame 230;

[0058] A first lifting motor 240 , the first lifting motor 240 drives the lifting frame 230 ;

[0059] The second driving cylinder 250 drives the connecting winch mechanism 300 .

[0060] Reference Figure 6 , the first driving cylinder 220 drives the vertical slide 210 to move relative to the base 100 on the y-axis, the first lifting motor 240 drives the lifting frame 230 to move on the z-axis, the turning mechanism 300 is slidably connected to the lifting frame 230, and the second driving cylinder 250 drives the turning mechanism 300 to move on the x-axis. In addition, a control center 600 can be set to intelligently control the driving cylinder and the lifting motor, and the control center 600 can be any intelligent terminal that can realize command control. Preferably, the first lifting motor 240 can be selected as a servo motor.

[0061] The cranking device is applicable to an environment where the cranking of engines of different models is completed. The positions of the flywheels of engines of different models are different, and a control center 600 is set to accurately control the cranking mechanism 300 to correspond to the position of the flywheel according to the engine model.

[0062] At the same time, a method for realizing engine model identification is proposed. After the engine is offline, a specific pallet is usually used to complete the loading of the engine and facilitate the transfer of the engine. A label representing the engine model can be set on the engine pallet, and when the engine enters the turning mechanism 300, the label is identified and the engine model is sent to the control center 600 at the same time. In order to facilitate the loading of the engine, a bracket 110 is also provided on the chassis to assist the loading of the corresponding pallet. In order to prevent the direct contact between the two metal parts of the bracket 110 and the pallet from causing extrusion and deformation, a rubber pad 120 is provided on the bracket 110.

[0063] The motion mechanism 200 can complete the free movement of the crank mechanism 300 in the space, so it can be set that when the engine does not enter the crank device, the crank mechanism 300 is located Figure 6 The position of the upper right or lower right of the middle part is to reserve enough space for the engine to enter the cranking device. After the engine enters the cranking device, the control center 600 sends out relevant instructions to move the cranking mechanism 300 to the corresponding position of the flywheel.

[0064] Furthermore, the motion mechanism 200 is also provided with two guide rail chains 260 to assist the vertical slide 210 in the y-axis direction and the lifting frame 230 in the z-axis direction, so as to ensure the stability of the movements of the two.

[0065] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A turning device, characterized in that: The turning device comprises: Base (100); A motion mechanism (200), the motion mechanism (200) being slidably connected to the base (100) so as to move relative to the base (100); A turning mechanism (300), wherein the turning mechanism (300) is elastically connected to the motion mechanism (200), and the turning mechanism (300) can be retracted and reset along its own axial direction; A driving device (400), wherein the driving device (400) is drivingly connected to the barring mechanism (300).

2. The barring device according to claim 1, characterized in that: The barring mechanism (300) is elastically connected to the motion mechanism (200) via a floating spline (500), and the floating spline (500) comprises: A first connecting plate (510); a second connecting plate (520), the first connecting plate (510) and the second connecting plate (520) being arranged at a predetermined distance from each other, and the second connecting plate (520) being connected to the turning mechanism (300); A track rod (530), one end of the track rod (530) is fixedly connected to the first connecting plate (510), and the second connecting plate (520) is slidably sleeved on the other end of the track rod (530); An elastic member (540), wherein the elastic member (540) is sleeved on the outer periphery of the track rod (530), and one end of the elastic member (540) abuts against the second connecting plate (520).

3. The turning device according to claim 1, characterized in that: The turning mechanism (300) has an engagement end, which includes an end body (310) and a turning column (320). A plurality of the turning columns (320) are evenly distributed around the circumference of the end body (310), and a turning groove (330) is provided between two adjacent turning columns (320).

4. The barring device according to claim 3, characterized in that: The number of the turning gear columns (320) is three, and the turning gear columns (320) are in the shape of a fan-shaped column.

5. The barring device according to claim 2, characterized in that: The elastic member (540) is a spring.

6. The barring device according to claim 1, characterized in that: The motion mechanism (200) comprises: A vertical slide (210), wherein the vertical slide (210) is slidably connected to the base (100); A first driving cylinder (220), the first driving cylinder (220) drivingly connected to the vertical slide (210); A lifting frame (230), the lifting frame (230) is slidably connected to the vertical slide (210), and the turning mechanism (300) is placed on the lifting frame (230); A first lifting motor (240), wherein the first lifting motor (240) drives the lifting frame (230); A second driving cylinder (250), wherein the second driving cylinder (250) is driven and connected to the turning mechanism (300).

7. The barring device according to claim 6, characterized in that: The turning device further comprises a control center (600), wherein the control center (600) is communicatively connected with the first driving cylinder (220), the first lifting motor (240) and the second driving cylinder (250), and the first lifting motor (240) is a servo motor.

8. The barring device according to claim 6, characterized in that: The motion mechanism (200) further comprises two guide rail chains (260), one of the two guide rail chains (260) cooperates with the first driving cylinder (220), and the other cooperates with the first lifting motor (240).

9. The barring device according to claim 1, characterized in that: The driving device (400) is an electric motor.

10. The barring device according to claim 1, characterized in that: The base (100) comprises a bracket (110), and a rubber pad (120) is arranged on the bracket (110).

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