Engine turning gear

Abstract

The utility model discloses an engine turning gear which comprises a fixing seat, a driving shaft, a turning gear and a locking assembly, and the fixing seat is used for being detachably and fixedly connected with a flywheel shell at the rear end of an engine. The driving shaft is rotationally connected with the fixing base, and the first end of the driving shaft is provided with an operation end used for screwing the driving shaft. The turning gear is coaxially and fixedly connected with the second end of the driving shaft and used for being meshed with the flywheel gear ring. According to the engine barring gear, the engine barring gear is installed on the flywheel shell at the rear end of the engine through the fixing base, the driving shaft provided with the barring gear rotates and directly acts on the flywheel gear ring to achieve barring, that is, barring can be achieved through rotation of the driving shaft and the barring gear, and the transmission mode is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of engine regulating equipment, in particular to an engine barring gear. Background Art

[0002] The valve train of an engine is used to control the phase angle of the engine. The traditional valve train needs to adjust the intake and exhaust valve clearances according to the design requirements. When adjusting, the engine needs to rotate. That is, during the assembly process, an engine barring gear is required to drive the rotation of the crankshaft, and then drive the rotation of the valve train to complete the valve clearance adjustment and phase inspection.

[0003] However, the overall structure of the traditional engine barring gear is complex, the transmission is cumbersome, and it needs to cooperate with the flywheel to achieve barring. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an engine barring gear with simple transmission.

[0005] The engine barring gear provided by this application includes:

[0006] A fixed seat, which is used for detachably and fixedly connecting with the flywheel housing at the rear end of the engine;

[0007] A driving shaft, which is rotatably connected with the fixed seat. An operation end for screwing the driving shaft is provided at the first end of the driving shaft;

[0008] A barring gear, which is coaxially and fixedly connected with the second end of the driving shaft and is used for meshing with the flywheel ring gear;

[0009] A locking assembly. When the engine barring gear is in a non-working state, the driving shaft is fixedly connected with the fixed seat through the locking assembly.

[0010] Optionally, in the above engine barring gear, the locking assembly includes:

[0011] A locking piece;

[0012] A locking cover, which is sleeved on the outer periphery of the driving shaft and is threadedly connected with the driving shaft. A first locking hole is provided on the locking cover, and a second locking hole is provided on the fixed seat. When the engine barring gear is in a non-working state, the locking piece is inserted into the first locking hole and the second locking hole.

[0013] Optionally, in the above engine barring device, the second locking hole is a threaded hole, and the locking member is a bolt. When the engine barring device is in a non-operating state, the screw of the locking member is threadedly connected to the second locking hole, and the head of the locking member abuts against the end face of the locking cover.

[0014] Optionally, in the above engine barring device, there are multiple second locking holes, and all the second locking holes are circumferentially distributed with the center of the through hole as the center of the circle; along the circumferential direction, the distance between two adjacent second locking holes is less than the distance between two adjacent locking members, and the number of the second locking holes is greater than the number of the locking members.

[0015] Optionally, in the above engine barring device, the locking assembly includes at least two locking members, and the first locking hole is connected to the locking member one by one.

[0016] Optionally, in the above engine barring device, the first locking hole is an arc-shaped hole body, and the arc-shaped hole body is arranged with the axis of the drive shaft as the center of the circle.

[0017] Optionally, in the above engine barring device, the fixed seat is provided with a mounting table protruding outwardly towards the locking cover, and the second locking hole is opened in the mounting table.

[0018] Optionally, in the above engine barring device, mounting holes are respectively provided at both ends in the length direction of the fixed seat, and the mounting holes are mounted on the rear-end flywheel housing of the engine through fasteners.

[0019] Optionally, in the above engine barring device, it further includes:

[0020] A connection key, the barring gear is sleeved on the outer periphery of the drive shaft and is key-connected through the connection key;

[0021] A fastener, the fastener is mounted on the first end and fixes the barring gear in the axial direction.

[0022] Optionally, in the above engine barring device, a limiting platform is provided on the drive shaft, the limiting platform abuts against the wall surface of the fixed seat, and the limiting platform is located between the through hole and the operating end.

[0023] In the above technical solution, the engine barring device provided by the present utility model includes a fixed seat, a drive shaft, a barring gear, and a locking assembly. The fixed seat is used for detachably and fixedly connecting with the flywheel housing at the rear end of the engine. The drive shaft is rotatably connected to the fixed seat, and an operating end for screwing the drive shaft is provided at the first end of the drive shaft. The barring gear is coaxially and fixedly connected to the second end of the drive shaft, and the barring gear is used for meshing with the flywheel ring gear. When the engine barring device is in a non-operating state, the drive shaft is fixedly connected to the fixed seat through the locking assembly. When it is necessary to bar the engine, the fixed seat is fixedly connected to the flywheel housing at the rear end of the engine, the barring gear is meshed with the flywheel ring gear, and by rotating the operating end of the drive shaft, the barring gear is driven to rotate, and then the flywheel ring gear is driven to rotate to achieve barring. When the engine barring device is in a non-operating state, the drive shaft is fixedly connected to the fixed seat through the locking assembly.

[0024] As can be seen from the above description, in the engine barring device provided by the present application, the engine barring device is installed on the flywheel housing at the rear end of the engine through the fixed seat, and by rotating the drive shaft equipped with the barring gear, it directly acts on the flywheel ring gear to achieve barring, that is, barring can be achieved by rotating two components, namely the drive shaft and the barring gear, that is, barring can be achieved through a set of transmission structure, and the transmission method is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0026] Figure 1 It is a three-dimensional structure schematic diagram of the engine barring device provided by the embodiment of the present utility model;

[0027] Figure 2 It is a front view of the engine barring device provided by the embodiment of the present utility model when it is in a non-operating state;

[0028] Figure 3 It is a side view of the engine barring device provided by the embodiment of the present utility model when it is in a non-operating state;

[0029] Figure 4 It is an exploded view of the engine barring device provided by the embodiment of the present utility model;

[0030] Figure 5 It is a structure schematic diagram of the drive shaft provided by the embodiment of the present utility model;

[0031] Figure 6Schematic structural diagram of the locking cover provided by the embodiment of the present utility model.

[0032] Wherein Figure 1-6 In:

[0033] 1 - Turning gear, 2 - Connecting key;

[0034] 3 - Driving shaft, 301 - Operating end, 302 - Limiting platform, 303 - Threaded section, 304 - Second end;

[0035] 4 - Fixed seat, 401 - Mounting hole, 402 - Second locking hole;

[0036] 5 - Locking cover, 501 - First locking hole;

[0037] 6 - Locking member, 7 - Bolt, 8 - End cover. Specific embodiments

[0038] The core of the present utility model is to provide a turning device for an engine, and the transmission of the turning device for the engine is simple.

[0039] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0040] Please refer to Figures 1 to 6 .

[0041] In a specific embodiment, the turning device for an engine provided by the specific embodiment of the present utility model includes a fixed seat 4, a driving shaft 3, a turning gear 1 and a locking assembly. The fixed seat 4 is used for fixedly connecting with the flywheel housing at the rear end of the engine. Specifically, preferably, the fixed seat 4 is detachably and fixedly connected with the flywheel housing at the rear end of the engine. In a specific embodiment, mounting holes 401 are respectively provided at both ends in the length direction of the fixed seat 4, and the mounting holes 401 are installed on the flywheel housing at the rear end of the engine through fasteners. Preferably, the two mounting holes 401 are symmetrically arranged on opposite sides of the fixed seat 4.

[0042] The driving shaft 3 is rotatably connected with the fixed seat 4. Specifically, the driving shaft 3 is in clearance fit with the fixed seat 4. For example, a groove body for accommodating the driving shaft 3 is provided on the fixed seat 4. In a specific embodiment, a through hole is provided on the fixed seat 4, and the middle position of the driving shaft 3 passes through the through hole and is in clearance fit with the through hole. For the convenience of passing the driving shaft 3, preferably, the through hole is a cylindrical hole. An operating end 301 for screwing the driving shaft 3 is provided at the first end of the driving shaft 3. Specifically, the operating end 301 is preferably a regular hexagon structure so that a wrench can be installed on the operating end 301 to screw the driving shaft 3.

[0043] The barring gear 1 is coaxially and fixedly connected to the second end 304 of the drive shaft 3, and the first end and the second end 304 are located on opposite sides of the through hole. The barring gear 1 is used to mesh with the flywheel ring gear.

[0044] The engine barring device provided by the present application can check the valve timing and valve clearance of the engine.

[0045] When the engine barring device is in a non-operating state, the drive shaft 3 is fixedly connected to the fixed seat 4 through a locking assembly. When it is necessary to bar the engine, the fixed seat 4 is fixedly connected to the flywheel housing at the rear end of the engine, the barring gear 1 meshes with the flywheel ring gear, and by rotating the operating end 301 of the drive shaft 3, the barring gear 1 is driven to rotate, and then the flywheel ring gear is driven to rotate to achieve barring.

[0046] When the engine barring device is in a non-operating state, the drive shaft 3 is fixedly connected to the fixed seat 4 through a locking assembly.

[0047] It can be seen from the above description that in the engine barring device provided in the specific embodiment of the present application, the engine barring device is installed on the flywheel housing at the rear end of the engine through the fixed seat 4, and the drive shaft 3 equipped with the barring gear 1 rotates, directly acting on the flywheel ring gear to achieve barring, that is, barring can be achieved by the rotation of two components, namely the drive shaft 3 and the barring gear 1, and the transmission method is simple.

[0048] The locking assembly can specifically be a pin. The fixed seat 4 and the drive shaft 3 are provided with sockets, and the pin is inserted into the socket positions of the fixed seat 4 and the drive shaft 3 to achieve fixation.

[0049] In a specific embodiment, the locking assembly includes a locking member 6 and a locking cover 5. The locking cover 5 is sleeved on the outer periphery of the drive shaft 3 and is threadedly connected to the drive shaft 3. Specifically, the drive shaft 3 is provided with a threaded section 303 that is threadedly connected to the locking cover 5.

[0050] Among them, the length of the threaded section 303 is such that when locking, the locking member 6 can be threadedly connected to the second locking hole 402.

[0051] The locking cover 5 is provided with a first locking hole 501, and the fixed seat 4 is provided with a second locking hole 402. When the engine barring device is in a non-operating state, the locking member 6 is inserted into the first locking hole 501 and the second locking hole 402. Among them, the engine barring device being in a non-operating state can specifically be the state after the drive shaft 3 has completed rotation, that is, the state where the drive shaft 3 does not rotate.

[0052] In a specific embodiment, the second locking hole 402 is a threaded hole, and the locking member 6 is a bolt. When the engine cranking device is in a non-working state, the screw of the locking member 6 is threadedly connected to the second locking hole 402, and the head of the locking member 6 abuts against the end surface of the locking cover 5. In this way, the locking member 6 is locked with the locking cover 5 and the fixing seat 4. The locking cover 5 and the fixing seat 4 can be connected by a locking member 6.

[0053] In order to improve the connection stability, preferably, the locking assembly includes at least two locking members 6, and the first locking holes 501 are connected to the locking members 6 one-to-one, that is, a locking member 6 is installed in each first locking hole 501. Specifically, preferably, the locking members 6 are distributed in an annular shape with equal spacing.

[0054] In a specific embodiment, a plurality of second locking holes 402 are provided, and all second locking holes 402 are circumferentially distributed with the center of the through hole as the center of the circle. Specifically, along the circumferential direction, the spacing between two adjacent second locking holes 402 is smaller than the spacing between two adjacent locking members 6, and the number of second locking holes 402 is greater than the number of locking members 6. Preferably, along the circumferential direction, two adjacent second locking holes 402 are arranged at equal intervals, and two adjacent locking members 6 are arranged at equal intervals.

[0055] like Figure 6 As shown, in a specific embodiment, the first locking hole 501 is an arc-shaped hole body, and the arc-shaped hole body is set with the axis of the drive shaft 3 as the center. The second locking hole 402 is set as an arc-shaped hole body, so that the position of the locking member 6 in the first locking hole 501 can be adjusted, thereby facilitating the locking member 6 to dock with the second locking hole 402. In this way, it can be stopped and locked at any position.

[0056] In order to improve the installation stability, in a specific embodiment, the fixing seat 4 is provided with a mounting platform protruding toward the locking cover 5, and the second locking hole 402 is opened on the mounting platform. Such a configuration ensures that the second locking hole 402 has a certain depth, thereby improving the connection stability between the second locking hole 402 and the locking member 6.

[0057] In order to improve assembly efficiency, preferably, the mounting platform and the fixing seat 4 are integrally formed.

[0058] In a specific embodiment, the engine cranking device further includes a connecting key 2 and a fastener, the cranking gear 1 is sleeved on the outer periphery of the drive shaft 3 and is key-connected via the connecting key 2, and the fastener is installed at the first end and fixes the cranking gear 1 in the axial direction. The connecting key 2 is a flat key, and the drive shaft 3 is provided with a keyway for accommodating the connecting key 2.

[0059] Specifically, the fastener includes a bolt 7 and an end cover 8. The end face of the end cover abuts against the end faces of the turning gear 1 and the drive shaft 3. The bolt 7 passes through the end cover 8 and is threadedly connected to the drive shaft 3 to limit the axial direction of the turning gear 1.

[0060] On the basis of the above-mentioned various solutions, a limiting platform 302 is provided on the drive shaft 3. Specifically, preferably, the limiting platform 302 is annularly arranged on the outer periphery of the drive shaft 3, and the limiting platform 302 abuts against the wall surface of the fixed seat 4. The limiting platform 302 is located between the through hole and the operating end 301. By providing the limiting platform 302, when the limiting platform 302 abuts against the wall surface of the fixed seat 4, the turning gear 1 is engaged with the flywheel ring gear, ensuring the installation position of the drive shaft 3 and the fixed seat 4.

[0061] Specifically, during processing, the limiting platform 302 can be installed on the shaft body of the drive shaft 3 by means of bonding, welding, etc. In order to improve the accuracy of the installation position and at the same time improve the assembly efficiency, the limiting platform 302 can be integrally formed with the shaft body of the drive shaft 3. For example, the drive shaft 3 is directly cast.

[0062] The diameter of the limiting platform 302 is not specifically limited, as long as it can be fitted to the wall surface of the fixed seat 4 to achieve limiting. The thickness of the limiting platform 302 is set as required to be not easily deformed to ensure accurate limiting.

[0063] When assembling the engine turning device, first install the fixed seat 4 on the flywheel housing at the rear end of the engine, and install the drive shaft 3 on the fixed seat 4; then install the turning gear 1 on the drive shaft 3, and fix the turning gear 1 with bolts 7 and end cover 8; then install the locking cover 5 on the drive shaft 3. At this time, the locking member 6 is not installed, and the locking member 6 is installed on the locking cover 5 only when locking is required.

[0064] When the engine turning device is running, first use a wrench to rotate the drive shaft 3, and then drive the flywheel and the crankshaft to rotate, and then drive the valve train to move to adjust the intake valve clearance and check the valve timing. When locking is required to stop, install the locking cover 5 on the drive shaft 3. After installation in place, pass the locking member 6 through the locking cover 5 and connect it to the mounting seat, and then tighten the locking member 6 to achieve the locking function.

[0065] The engine turning device provided by this application is simple to operate, has high safety, and is fast. Adjustment can be achieved by turning the drive shaft 3, which is relatively labor-saving.

[0066] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An engine barring gear, characterized in that, Comprising: A fixed seat (4), which is used for detachably and fixedly connecting with the flywheel housing at the rear end of the engine; A drive shaft (3), which is rotatably connected with the fixed seat (4), and an operation end (301) for screwing the drive shaft (3) is provided at the first end of the drive shaft (3); A turning gear (1), which is coaxially and fixedly connected with the second end (304) of the drive shaft (3), and the turning gear (1) is used for meshing with the flywheel ring gear; A locking assembly, when the engine turning device is in a non-working state, the drive shaft (3) is fixedly connected with the fixed seat (4) through the locking assembly.

2. The engine barring gear according to claim 1, characterized in that, The locking assembly includes: A locking member (6); A locking cover (5), which is sleeved on the outer periphery of the drive shaft (3) and is threadedly connected with the drive shaft (3). A first locking hole (501) is provided on the locking cover (5), and a second locking hole (402) is provided on the fixed seat (4). When the engine turning device is in a non-working state, the locking member (6) is inserted into the first locking hole (501) and the second locking hole (402).

3. The engine barring gear according to claim 2, wherein, The second locking hole (402) is a threaded hole, and the locking member (6) is a bolt. When the engine turning device is in a non-working state, the screw rod of the locking member (6) is threadedly connected with the second locking hole (402), and the head of the locking member (6) abuts against the end face of the locking cover (5).

4. The engine barring gear according to claim 2, characterized in that, A through hole is provided on the fixed seat (4), and the middle position of the drive shaft (3) passes through the through hole and has a clearance fit with the through hole; the first end and the second end (304) are located on opposite sides of the through hole. A plurality of second locking holes (402) are provided, and all the second locking holes (402) are circumferentially distributed with the center of the through hole as the center of the circle; along the circumferential direction, the distance between two adjacent second locking holes (402) is less than the distance between two adjacent locking members (6), and the number of the second locking holes (402) is greater than the number of the locking members (6).

5. The engine barring gear according to claim 2, wherein, The locking assembly includes at least two locking members (6), and the first locking hole (501) is connected to the locking member (6) one by one.

6. The engine barring device according to claim 2, characterized in that, The first locking hole (501) is an arc-shaped hole body, and the arc-shaped hole body is provided with the axis of the drive shaft (3) as the center of the circle.

7. The engine barring gear according to claim 2, wherein, The fixed seat (4) is provided with a mounting platform protruding outward towards the locking cover (5), and the second locking hole (402) is opened on the mounting platform.

8. The engine barring gear according to claim 1, characterized in that, Mounting holes (401) are respectively provided at both ends in the length direction of the fixed seat (4), and the mounting holes (401) are mounted on the flywheel housing at the rear end of the engine through fasteners.

9. The engine barring gear according to claim 1, characterized in that, Further comprising: A connection key (2), the turning gear (1) is sleeved on the outer periphery of the drive shaft (3) and is key-connected through the connection key (2); Fasteners, which are mounted on the first end and fix the turning gear (1) in the axial direction.

10. The engine barring device according to claim 4, characterized in that, A limiting platform (302) is provided on the drive shaft (3), the limiting platform (302) abuts against the wall surface of the fixed seat (4), and the limiting platform (302) is located between the through hole and the operating end (301).

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