Engine stinger

Abstract

The utility model relates to a motorcycle frame, in particular to an engine stinger. Comprising two engine supporting pipes arranged in a mirror image mode and a fixing base fixedly connected between the two engine supporting pipes. The fixing base is provided with a limiting part, and the two end faces of the limiting part are limiting end faces and are fixedly connected with connecting supporting lugs used for being connected with an engine. The distance between the two limiting end faces is equal to the width of a front frame connecting part of an engine. According to the scheme, the engine stinger can be suitable for installation of engines of various models, and the engines can be reliably connected and fixed.

Description

Technical Field

[0001] The utility model relates to a motorcycle frame, in particular to an engine stinger frame. Background Art

[0002] The motorcycle frame is one of the core components of the motorcycle. It is welded by various metal pipes to form a three-dimensional structure. The engine stinger is an important part of the motorcycle frame and is used to carry and install the motorcycle engine. The engine stinger is fixed to the motorcycle engine by the fixed connecting plate and adjustable connecting plate welded on it. Figure 1 , 2 As shown, the prior art engine stinger frame includes two engine stingers arranged in a mirror image. A fixed connecting plate and an adjustable connecting plate are respectively welded to the inner sides of the two engine stingers, and the front frame connection part of the engine is located between the fixed connecting plate and the adjustable connecting plate and is fixedly connected by bolts.

[0003] However, when installing the engine on the engine stinger, since the engine stinger surface is an arc surface, the welding parts of the fixed connecting plate and the adjustable connecting plate are both flat, which easily leads to welding errors, resulting in the distance between the fixed connecting plate and the adjustable connecting plate being inconsistent with the width of the front frame connection part of the engine. In order to ensure that the fixed connecting plate and the adjustable connecting plate are against the front frame connection part of the engine, the adjustable connecting plate can only be elastically deformed by squeezing it during bolt connection, so as to fit with the front frame connection part. Due to the deformation of the adjustable connecting plate, the welding part is subjected to additional force, which increases the risk of cracking at the welding part.

[0004] Secondly, since the front frame connection part is an integrated structure with the engine housing, the size of the front frame connection part is different for different engine models. It is necessary to first adjust the bending part of the adjustable connection plate to make it plastically deformed, and then the fixed connection plate and the adjustable connection plate fit together and then connect them with bolts.

[0005] It can be seen that the existing engine stinger has a high requirement for welding error in order to ensure the distance between the fixed connecting plate and the adjustable connecting plate. Moreover, for different models of engines, the bending angle of the bending part of the adjustable connecting plate needs to be adjusted so that the distance between the fixed connecting plate and the adjustable connecting plate can meet the installation requirements, which is inconvenient to use and affects the assembly efficiency. Utility Model Content

[0006] The utility model aims to provide an engine stinger which is suitable for installing engines of various models and can reliably connect and fix the engines.

[0007] An engine stinger bracket in the present scheme comprises two engine stingers arranged in a mirror image and a fixing seat fixedly connected between the two engine stingers; a limiting portion is arranged on the fixing seat, and both ends of the limiting portion are limiting end faces and are fixedly connected with connecting ears for connecting to the engine; the distance between the two limiting end faces is the same as the width of the front frame connecting portion of the engine.

[0008] The advantages of the utility model are: 1) since the connecting ears are fixedly connected to the two ends of the limiting part, the distance between the two connecting ears is determined by the limiting part, and the welding between the fixing seat and the engine tube mount will not affect the distance between the two connecting ears; 2) the size of the limiting part can ensure that the connecting ears and the two ends of the front frame connecting part of the engine are in close contact; 3) for engines of different models, the limiting part of the corresponding size can be replaced.

[0009] Furthermore, the fixing seat is a "J"-shaped structure; the middle part of the fixing seat is a raised part, and the two ends of the fixing seat are connecting feet; the raised part is fixedly connected to the limiting part; and the connecting foot is fixedly connected to the engine tube mount.

[0010] Furthermore, since the lateral length of the protruding portion is smaller than the distance between the two limiting end faces of the limiting portion, the two ends of the limiting end faces of the limiting portion extend out of the protruding portion and hang in the air. After the limiting end faces are connected to the connecting lugs, the lower edge of the connecting lugs will not interfere with the fixing seat. That is, the limiting end faces do not need to be connected close to the edge of the connecting lugs, which reduces the connection process requirements, reduces costs, and improves the connection stability.

[0011] Furthermore, the limiting part is composed of two limiting tubes arranged in parallel, the length of the limiting tube is easy to cut, and the limiting end surface of the limiting tube is surface-connected with the connecting lug, which is easy to weld and the connection is reliable.

[0012] Furthermore, it also includes a connecting groove, which is arranged on the raised part of the fixing seat, and the cross-section of the connecting groove is arc-shaped; the connecting groove is adapted to the limiting tube, that is, the arc radius of the connecting groove is the same as the radius of the outer wall of the limiting tube, thereby increasing the contact area between the limiting tube and the fixing seat and further improving the connection stability.

[0013] Furthermore, the connecting lug is triangular, and the limiting end faces of the two limiting tubes are respectively adjacent to the two corners of the connecting lug and are fixedly connected to the connecting lug. The two limiting tubes and the front frame connecting part of the engine form a triangular stable structure.

[0014] Furthermore, the cross section of the fixing seat is an inverted U-shaped structure, which can not only improve the strength of the fixing seat, but also increase the welding points between the two ends of the fixing seat and the engine tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural diagram and a partial enlarged diagram of an engine stinger in the prior art;

[0016] Figure 2 A perspective view of an engine stinger in the prior art;

[0017] Figure 3 This is a structural schematic diagram of an engine stinger according to the utility model;

[0018] Figure 4 This is a structural diagram of a fixing seat, a limiting part, and a connecting lug in an engine stinger of the utility model;

[0019] Figure 5 The present invention is a structural comparison diagram of an engine stinger rack according to the utility model and an engine stinger rack according to the prior art.

[0020] In the figure, 1 is the engine tube mount, 2 is the adjustable connecting plate, 2-1 is the connecting portion, 2-2 is the bending portion, 2-3 is the welding portion, 3 is the fixed connecting plate, 4 is the fixing seat, 4-1 is the protruding portion, 4-2 is the connecting foot, 4-3 is the connecting groove, 5 is the limiting portion, 5-1 is the limiting end face, 5-2 is the limiting tube, and 6 is the connecting ear. DETAILED DESCRIPTION

[0021] The engine stinger of the prior art, according to Figure 1 , 2 As shown, the front ends of the two engine tube mounts 1 are close to each other, and the rear ends are far away from each other, forming a fixed angle. The front ends of the two engine tube mounts 1 are welded to the rear ends of the triangular plate front beams, and the fixed connecting plate 3 and the adjustable connecting plate 2 are respectively welded to the inner sides of the two engine tube mounts 1, and the front frame connection part of the engine is located between the fixed connecting plate 3 and the adjustable connecting plate 2. The adjustable connecting plate 2 is composed of a connecting part 2-1, a bending part 2-2, and a welding part 2-3, and the adjustable connecting plate 2 is welded and fixed to the engine tube mount 1 through the welding part 2-3.

[0022] Since the engine tube mount 1 is an arc surface, the fixed connecting plate 3 and the adjustable connecting plate 2 are prone to small angle deflection when being welded to the engine tube mount 1, thereby affecting the distance between the fixed connecting plate 3 and the adjustable connecting plate 2. When workers are installing the engine, if the distance between the fixed connecting plate 3 and the adjustable connecting plate 2 is significantly different from the width of the front frame connection, the workers need to manually adjust the angle between the bending portion 2-2 and the connecting portion 2-1 and the welding portion 2-3, thereby adjusting the distance between the fixed connecting plate 3 and the adjustable connecting plate 2 to match the width of the front frame connection of the engine. If the distance between the fixed connecting plate 3 and the adjustable connecting plate 2 is slightly different from the width of the front frame connection, the connecting portion 2-1 of the adjustable connecting plate 2 is squeezed and fitted to the front frame connection of the engine by bolts, so that the bending portion 2-2 of the adjustable connecting plate 2 undergoes elastic deformation to match the width of the front frame connection of the engine.

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0024] An engine stinger in this scheme, according to Figure 3 , 4 As shown, it includes two engine tube mounts 1 arranged in mirror image and a fixing seat 4 fixedly connected between the two engine tube mounts 1. A limiting portion 5 is arranged on the fixing seat 4, and both ends of the limiting portion 5 are limiting end faces 5-1 and are welded with connecting ears 6 for connecting to the engine, and the connecting ears 6 are arranged vertically. The distance between the two limiting end faces 5-1 is the same as the width of the front frame connecting portion of the engine.

[0025] As a further improvement of the present invention, the fixing seat 4 is a "J"-shaped structure. The middle part of the fixing seat 4 is a raised portion 4-1, and the two ends of the fixing seat 4 are connecting legs 4-2; the raised portion 4-1 and the limiting portion 5 are preferably welded and fixed. The connecting legs 4-2 are welded to the engine tube 1.

[0026] As a further improvement of the present invention, since the transverse length of the protruding portion 4-1 is smaller than the distance between the two limiting end faces 5-1 of the limiting portion 5, the two ends of the limiting end faces 5-1 of the limiting portion 5 are extended out of the protruding portion 4-1 and suspended in the air. After the limiting end faces 5-1 are welded to the connecting lug 6, the lower edge of the connecting lug 6 will not interfere with the fixing seat 4. That is, the limiting end faces 5-1 do not need to be connected close to the edge of the connecting lug 6, which reduces the welding process requirements and processing costs while improving its connection stability.

[0027] As a further improvement of the present invention, the limiting part 5 is composed of two limiting tubes 5-2 arranged in parallel. The length of the limiting tube 5-2 is easy to cut, and the limiting end surface 5-1 of the limiting tube 5-2 is connected to the connecting lug 6 by a surface, which is easy to weld and the connection is reliable. In this example, the limiting tube 5-2 is preferably an inch tube, and the size of the inch tube can be selected according to the engine and its front frame connection.

[0028] As a further improvement of the utility model, it also includes a connecting groove 4-3, which is arranged on the raised portion 4-1 of the fixing seat 4, and the cross section of the connecting groove 4-3 is arc-shaped. The connecting groove 4-3 is adapted to the limiting tube 5-2, that is, the arc radius of the connecting groove 4-3 is the same as the outer wall radius of the limiting tube 5-2, which can increase the contact area between the limiting tube 5-2 and the fixing seat 4, and further improve the welding stability between the limiting tube 5-2 and the fixing seat 4.

[0029] As a further improvement of the present invention, the connecting lug 6 is preferably a triangular structure, and the limiting end faces 5-1 of the two limiting tubes 5-2 are respectively adjacent to the two corners of the connecting lug 6 and are fixedly connected to the connecting lug 6. The front frame connecting part is bolted to the remaining corner of the connecting lug 6, and at this time, the two limiting tubes 5-2 and the front frame connecting part of the engine can form a stable triangular structure.

[0030] As a further improvement of the present invention, the cross section of the fixing seat 4 is an inverted U-shaped structure, which can not only improve the strength of the fixing seat 4, but also the cross section of its connecting leg 4-2 is also a U-shaped structure. Compared with the engine stinger bracket of the prior art, the welding length between the connecting legs 4-2 at both ends of the fixing seat 4 and the engine stinger 1 is increased. Figure 5 As shown, the connecting foot 4-2 of the fixing seat 4 is fixed between the two engine tube mounts 1, which is not only easy to position before welding and reduces the difficulty of welding, but also reduces the welding error.

[0031] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. An engine stinger, characterized in that: It comprises two engine tube mounts arranged in a mirror image and a fixing seat fixedly connected between the two engine tube mounts; a limiting portion is arranged on the fixing seat, both end faces of the limiting portion are limiting end faces and are fixedly connected with connecting ears for connecting to the engine; the distance between the two limiting end faces is the same as the width of the front frame connecting portion of the engine.

2. An engine stinger according to claim 1, characterized in that: The fixing seat is a "J"-shaped structure; the middle part of the fixing seat is a raised part, and the two ends of the fixing seat are connecting feet; the raised part is fixedly connected to the limiting part; and the connecting foot is fixedly connected to the engine tube mount.

3. An engine stinger according to claim 2, characterized in that: The transverse length of the protrusion is smaller than the distance between the two limiting end surfaces of the limiting portion.

4. An engine stinger according to any one of claims 1 to 3, characterized in that: The limiting part is composed of two limiting tubes arranged in parallel; the two ends of the limiting tubes are limiting end faces.

5. The engine stinger according to claim 4, characterized in that: It also includes a connecting groove, which is arranged on the raised portion of the fixing seat, and the cross section of the connecting groove is arc-shaped; the connecting groove is adapted to the limiting tube.

6. The engine stinger according to claim 4, characterized in that: The connecting lug is triangular in shape, and the limiting end faces of the two limiting tubes are respectively close to two corners of the connecting lug and are fixedly connected to the connecting lug.

7. An engine stinger according to claim 1 or 2, characterized in that: The cross section of the fixing seat is an inverted U-shaped structure.

Images