A left crankcase pressure blocking device

CN224464095UActive Publication Date: 2026-07-07JIANGMEN GEWEI PRECISION MACHINERY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGMEN GEWEI PRECISION MACHINERY
Filing Date
2025-07-31
Publication Date
2026-07-07

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Abstract

The utility model discloses a left crankcase box pressure plugging device, including fixed subassembly and top pressure mechanism, fixed subassembly includes support mechanism, limiting mechanism and clamping mechanism, limiting mechanism is connected with support mechanism, and clamping mechanism sets up in the upper portion of support mechanism, and clamping mechanism is used for pressing the left crankcase body on the support mechanism, top pressure mechanism sets up in the one side of support mechanism, and top pressure mechanism is used for plugging the plug into the left crankcase body. The utility model discloses convenient to the plug pressure mounting of motorcycle left crankcase, and promotes production efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of motorcycle left crankcase manufacturing technology, and in particular to a left crankcase pressure plugging device. Background Technology

[0002] The motorcycle crankcase is a critical component of the engine, typically cast from aluminum alloy. Its main function is to support core moving parts such as the crankshaft, create a sealed space for storing lubricating oil, aid in heat dissipation, and provide mounting locations for other accessories. Motorcycle crankcases come in various structural forms; for ease of manufacturing, assembly, and maintenance, they can be divided into left and right halves. During the casting process of the left crankcase, process holes are required to improve the casting effect. After casting, these process holes need to be sealed with metal plugs to ensure the crankcase's airtightness during use. Currently, sealing the process holes in the left crankcase generally relies on manual hammering by workers, resulting in extremely low operational efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a left crankcase plugging device, which facilitates the plugging of the left crankcase of a motorcycle, thereby improving production efficiency.

[0004] A left crankcase sealing device according to an embodiment of the present invention includes:

[0005] The fixing component includes a support mechanism, a limiting mechanism and a clamping mechanism. The limiting mechanism is connected to the support mechanism, and the clamping mechanism is located above the support mechanism. The clamping mechanism is used to press the left crankshaft housing onto the support mechanism.

[0006] The pressing mechanism, located on one side of the support mechanism, is used to press the plug into the left crankshaft housing.

[0007] A left crankcase sealing device according to an embodiment of the present invention has at least the following beneficial effects:

[0008] This system improves the efficiency of pressing metal plugs into the process holes of the left crankshaft housing, eliminating the need for manual hammering and increasing production speed. When the left crankshaft housing is placed above the support mechanism, a limiting mechanism guides it to a designated position, allowing the pressing mechanism to press the plug into the designated location within the process hole. A clamping mechanism presses the left crankshaft housing firmly against the base plate. The clamping mechanism, in conjunction with the base plate, applies clamping forces to the upper and lower sides of the left crankshaft housing, ensuring its stability during plug pressing. The limiting mechanism also helps to fix the left crankshaft housing in place. The combination of the limiting mechanism, clamping mechanism, and base plate further enhances the fixation of the left crankshaft housing, thus improving the quality of plug pressing. Using a pressing mechanism to press the metal plug into the process hole of the left crankshaft housing can prevent workers from scratching the plug or the left crankshaft housing when hammering it. At the same time, it can better control the consistency of the pressing force of the pressing mechanism, thus ensuring the consistency of the depth of the metal plug pressed into the process hole of the left crankshaft housing.

[0009] According to an embodiment of the present invention, a left crankcase sealing device includes a clamping mechanism comprising a first driving member and a first clamping block, wherein the first clamping block is connected to the output end of the first driving member and the first driving member is mounted on a support mechanism.

[0010] According to an embodiment of the present invention, a left crankcase sealing device includes a clamping mechanism that further includes a second driving member and a second clamping block. The second clamping block is connected to the output end of the second driving member, the second driving member is mounted on a support mechanism, and the second driving member is located on one side of the first driving member.

[0011] According to an embodiment of the present invention, a left crankcase sealing device includes a clamping mechanism that further includes a third driving member and a third clamping block. The third clamping block is connected to the output end of the third driving member. The third driving member is mounted on a support mechanism and is located on the same side as the first driving member and the second driving member.

[0012] According to an embodiment of the present invention, a left crankcase pressure plugging device is provided, wherein a first driving member, a second driving member, and a third driving member are arranged at intervals around a limiting mechanism.

[0013] According to an embodiment of the present invention, a left crankcase pressure plugging device is provided, wherein the first driving member, the second driving member and the third driving member are all rotary clamping cylinders. The first driving member can drive the first clamping block to rotate and press down, the second driving member can drive the second clamping block to rotate and press down, and the third driving member can drive the third clamping block to rotate and press down.

[0014] According to an embodiment of the present invention, a left crankcase sealing device includes a clamping mechanism that further includes a first air distribution outlet and a second air distribution outlet, which are respectively connected to a first driving component, a second driving component, and a third driving component via pipes.

[0015] According to an embodiment of the present invention, a left crankcase sealing device includes a limiting mechanism comprising a first limiting block, which is compatible with the left crankcase body.

[0016] According to an embodiment of the present invention, a left crankcase sealing device includes a limiting mechanism that further includes a second limiting block, which is compatible with the left crankcase body.

[0017] According to an embodiment of the present invention, a left crankcase pressure plugging device further includes a control box, which is used to control the operation of the clamping mechanism and the pressing mechanism.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the structure of a left crankcase pressure plugging device according to an embodiment of the present utility model;

[0021] Figure 2 This is a top view of the support mechanism, limiting mechanism, and clamping mechanism of a left crankcase sealing device according to an embodiment of the present utility model.

[0022] Figure 3 This is a top view of the support mechanism, limiting mechanism, clamping mechanism, and left crankcase body of a left crankcase sealing device according to an embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] Support mechanism 100; base plate 110; protrusion 120;

[0025] Limiting mechanism 200; first limiting block 210; second limiting block 220;

[0026] Clamping mechanism 300; first driving member 310; first clamping block 320; second driving member 330; second clamping block 340; third driving member 350; third clamping block 360; first air distributor 370; second air distributor 380;

[0027] Top pressing mechanism 400; fourth driving component 410; top pressing head 420;

[0028] Control box 500;

[0029] 600 machines;

[0030] Left crankshaft housing 700. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of a utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first" and "second" are used, they are merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 3 This utility model provides a left crankcase pressing device, including a fixing component and a pressing mechanism 400. The fixing component includes a support mechanism 100, a limiting mechanism 200, and a clamping mechanism 300. The limiting mechanism 200 is connected to the support mechanism 100, and the clamping mechanism 300 is disposed above the support mechanism 100. The clamping mechanism 300 is used to press the left crankcase 700 onto the support mechanism 100. Specifically, the support mechanism 100 includes a base plate 110, which is used to place the left crankcase 700. The limiting mechanism 200 is connected to the top surface of the base plate 110. (Refer to...) Figure 3The limiting mechanism 200 is matched with the structure of the left crankshaft housing 700. The limiting mechanism 200 is used to limit the position of the left crankshaft housing 700 on the base plate 110. The clamping mechanism 300 is set above the base plate 110. The clamping mechanism 300 can press the left crankshaft housing 700 down onto the base plate 110. The pressing mechanism 400 is set on one side of the support mechanism 100. The pressing mechanism 400 is used to press the plug (not shown in the figure) into the left crankshaft housing 700. Specifically, the plug is placed at the opening of the process hole (not shown in the figure) of the left crankshaft housing 700. The pressing mechanism 400 can press the plug into the process hole of the left crankshaft housing 700.

[0036] Specifically, refer to Figure 1 The pressing mechanism 400 includes a fourth driving member 410 and a pressing head 420. The pressing head 420 is disposed at the output end of the fourth driving member 410. The fourth driving member 410 can drive the pressing head 420 to move towards the support mechanism 100, so as to push the plug and press it into the process hole of the left crankshaft housing 700 disposed above the support mechanism 100. The fourth driving member 410 is a double-acting cylinder, a double-acting hydraulic cylinder, or other device capable of driving left and right.

[0037] Specifically, the top pressing mechanism 400 and the base plate 110 are both mounted on the machine base 600.

[0038] The design facilitates the press-fitting of metal plugs into the process holes of the left crankshaft housing 700, eliminating the need for manual hammering and improving plug press-fitting efficiency. When the left crankshaft housing 700 is placed above the support mechanism 100, the limiting mechanism 200 guides the left crankshaft housing 700 to a designated position above the support mechanism 100, allowing the pressing mechanism 400 to press the plug into the designated position of the left crankshaft housing 700, i.e., the process hole of the left crankshaft housing 700. The clamping mechanism 300 presses the left crankshaft housing 700 downwards onto the base plate 110. The clamping mechanism 300, in cooperation with the base plate 110, applies clamping forces to the upper and lower sides of the left crankshaft housing 700, achieving clamping of the left crankshaft housing 700 and improving the positional stability of the left crankshaft housing 700 when the pressing mechanism 400 presses in the plug. The limiting mechanism 200 also serves to fix the position of the left crankshaft housing 700. The limiting mechanism 200, clamping mechanism 300, and base plate 110 work together to further improve the fixing effect of the left crankshaft housing 700, thereby improving the quality of the plug being pressed into the left crankshaft housing 700. Using the pressing mechanism 400 to press the metal plug into the process hole of the left crankshaft housing 700 can avoid scratching the plug or the left crankshaft housing 700 when workers knock the plug. At the same time, it can better control the consistency of the pressing force of the pressing mechanism 400, thereby ensuring the consistency of the depth of the metal plug pressed into the process hole of the left crankshaft housing 700.

[0039] According to some embodiments of this application, refer to Figure 2 The clamping mechanism 300 includes a first driving member 310 and a first clamping block 320. The first clamping block 320 is connected to the output end of the first driving member 310, and the first driving member 310 is mounted on the support mechanism 100. Specifically, the first driving member 310 is mounted on the base plate 110. The first driving member 310 can drive the first clamping block 320 to move up and down to press the left crankshaft housing 700 downward or release the left crankshaft housing 700 upward, thereby improving the convenience of clamping and fixing the left crankshaft housing 700.

[0040] Furthermore, the clamping mechanism 300 also includes a second driving member 330 and a second clamping block 340. The second clamping block 340 is connected to the output end of the second driving member 330. The second driving member 330 is mounted on the support mechanism 100 and is located on one side of the first driving member 310. Specifically, the second driving member 330 is mounted on the base plate 110 and can drive the second clamping block 340 to move up and down. Figure 2 The second driving component 330 and the first driving component 310 are disposed at opposite ends on the top side of the base plate 110 to clamp and fix the two ends of the top surface of the left crankshaft housing 700, thereby improving the clamping and fixing effect.

[0041] Furthermore, the clamping mechanism 300 also includes a third driving member 350 and a third clamping block 360. The third clamping block 360 is connected to the output end of the third driving member 350. The third driving member 350 is mounted on the support mechanism 100 and is located on the same side as the first driving member 310 and the second driving member 330. Specifically, the third driving member 350 is mounted on the base plate 110 and can drive the third clamping block 360 to move up and down, further improving the clamping and fixing effect on the left crankshaft housing 700.

[0042] Furthermore, the first driving member 310, the second driving member 330, and the third driving member 350 are arranged at intervals around the limiting mechanism 200. (Refer to...) Figure 2 That is, the first driving member 310, the second driving member 330 and the third driving member 350 are arranged at intervals along the circumference of the base plate 110 on the top edge of the base plate 110. When the left crankshaft housing 700 is placed on the base plate 110 in conjunction with the limiting mechanism 200, the first driving member 310, the second driving member 330 and the third driving member 350 can respectively drive the first clamping block 320, the second clamping block 340 and the third clamping block 360 to move downward, clamping and fixing the three spaced positions on the top side of the left crankshaft housing 700, so as to prevent the left crankshaft housing 700 from moving relative to the base plate 110, so as to improve the pressure blocking effect.

[0043] Furthermore, the first driving member 310, the second driving member 330, and the third driving member 350 are all rotary clamping cylinders. The first driving member 310 can drive the first clamping block 320 to rotate and press down, the second driving member 330 can drive the second clamping block 340 to rotate and press down, and the third driving member 350 can drive the third clamping block 360 to rotate and press down. Utilizing the function of the rotary clamping cylinders rotating and pressing down, and then rotating back to their original position, when the first driving member 310, the second driving member 330, and the third driving member 350 are not in motion, the first clamping block 320, the second clamping block 340, and the third clamping block 360 can be positioned away from directly above the fixed position of the left crankshaft housing 700 to facilitate placing the left crankshaft housing 700 on the base plate 110; when it is necessary to clamp the left crankshaft housing 700, the first driving member 310, the second driving member 330, and the third driving member 350 are activated, and the first... Clamping block 320, second clamping block 340, and third clamping block 360 all rotate to directly above the left crankshaft housing 700 before pressing down to clamp and fix the left crankshaft housing 700. When it is necessary to release the left crankshaft housing 700, the first drive member 310, second drive member 330, and third drive member 350 are activated. The first clamping block 320, second clamping block 340, and third clamping block 360 all rise and release the fixation on the left crankshaft housing 700 before rotating back to their original positions to facilitate the removal of the left crankshaft housing 700.

[0044] Furthermore, referring to Figure 2 The clamping mechanism 300 also includes a first air distribution manifold 370 and a second air distribution manifold 380, which are respectively connected to a first driving member 310, a second driving member 330, and a third driving member 350 via pipes. Specifically, the first air distribution manifold 370 is connected to a first external high-pressure air source (not shown in the figure) via a pipe, and is also connected to the first air inlets (not shown in the figure) of the first driving member 310, the second driving member 330, and the third driving member 350 via pipes (not shown in the figure); the second air distribution manifold 380 is connected to a second external high-pressure air source (not shown in the figure) via a pipe, and is also connected to the second air inlets (not shown in the figure) of the first driving member 310, the second driving member 330, and the third driving member 350 via pipes (not shown in the figure). The device enables the first drive unit 310, the second drive unit 330, and the third drive unit 350 to be simultaneously connected to a first external high-pressure air source, so as to operate the first drive unit 310, the second drive unit 330, and the third drive unit 350 to rotate and press down simultaneously; or enables the first drive unit 310, the second drive unit 330, and the third drive unit 350 to be simultaneously connected to a second external high-pressure air source, so as to operate the first drive unit 310, the second drive unit 330, and the third drive unit 350 to rise and rotate back to their original positions simultaneously.

[0045] According to some embodiments of this application, refer to Figure 2 and Figure 3 The limiting mechanism 200 includes a first limiting block 210, which is compatible with the left crankshaft housing 700. Specifically, the first limiting block 210 is a cylindrical structure, and the left crankshaft housing 700 has a large-diameter circular hole. The first limiting block 210 is compatible with the large-diameter circular hole of the left crankshaft housing 700 to achieve positioning and limiting fixation of the left crankshaft housing 700.

[0046] Furthermore, the limiting mechanism 200 also includes a second limiting block 220, which can be matched and connected to the left crankshaft housing 700. Specifically, the second limiting block 220 is also a cylindrical structure, and the left crankshaft housing 700 is provided with a small-diameter circular hole. The second limiting block 220 can be matched and connected to the small-diameter circular hole of the left crankshaft housing 700, further improving the positioning and limiting and fixing effect of the left crankshaft housing 700.

[0047] According to some embodiments of this application, refer to Figure 1 The system also includes a control box 500, which controls the operation of the clamping mechanism 300 and the pressing mechanism 400. Specifically, a solenoid valve is installed on the connection pipe between the first air distributor 370 and the first external high-pressure air source, and a solenoid valve is also installed on the connection pipe between the second air distributor 380 and the second external high-pressure air source. The control box 500 is electrically connected to these solenoid valves. Specifically, a control device (such as a solenoid valve) is installed on the connection channel between the fourth drive component 410 and an external power source (such as a high-pressure air source or a hydraulic oil source). The control box 500 is electrically connected to this control device. By using the control box 500 to control these solenoid valves and control devices, the timing accuracy and convenience of controlling the operation of the clamping mechanism 300 and the pressing mechanism 400 are improved.

[0048] Understandably, referring to Figure 2 In some other embodiments, the support mechanism 100 also includes a protrusion 120, which is disposed on the top side of the base plate 110. The protrusion 120 is made of plastic material, and the left crankshaft housing 700 can be placed on top of the protrusion 120 to reduce the support contact area of ​​the left crankshaft housing 700. In addition, the plastic material of the protrusion 120 is not easy to scratch the left crankshaft housing 700, thus ensuring the surface quality of the left crankshaft housing 700.

[0049] Working principle: The left crankshaft housing 700 is placed above the protrusion 120 on the base plate 110. Guided by the first limiting block 210 and the second limiting block 220, the left crankshaft housing 700 is positioned and limited. At this time, the process hole of the left crankshaft housing 700 is aligned with the pressing head 420 of the pressing mechanism 400. The clamping mechanism 300 is operated, and the first driving member 310 drives the first clamping block 320 to clamp and fix the left crankshaft housing 700 downward. 0. The second driving component 330 drives the second clamping block 340 to clamp and fix the left crankshaft housing 700 downwards; the third driving component 350 drives the third clamping block 360 to clamp and fix the left crankshaft housing 700 downwards. The metal plug has a frustoconical structure with one large end and one small end. The smaller diameter end of the metal plug is inserted into the opening of the process hole in the left crankshaft housing 700. Under the action of friction, the smaller diameter end of the plug remains in the opening of the process hole, while the larger diameter end is outside the process hole. The operation of the fourth driving component 410 is described in detail below. Figure 1 The fourth driving component 410 drives the top pressure head 420 to move to the right, pressing the plug into the process hole to realize the plugging operation; control the first driving component 310, the second driving component 330, the third driving component 350, and the fourth driving component 410 to return to their initial positions, and the left crankshaft housing 700 after plugging can be removed.

[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A left crankcase pressure plugging device, characterized in that, include: The fixing assembly includes a support mechanism (100), a limiting mechanism (200), and a clamping mechanism (300). The limiting mechanism (200) is connected to the support mechanism (100), and the clamping mechanism (300) is disposed above the support mechanism (100). The clamping mechanism (300) is used to press the left crankshaft housing (700) onto the support mechanism (100). A pressing mechanism (400) is disposed on one side of the support mechanism (100), and the pressing mechanism (400) is used to press the plug into the left crankshaft housing (700).

2. The left crankcase sealing device according to claim 1, characterized in that, The clamping mechanism (300) includes a first driving member (310) and a first clamping block (320), the first clamping block (320) being connected to the output end of the first driving member (310), and the first driving member (310) being mounted on the support mechanism (100).

3. The left crankcase sealing device according to claim 2, characterized in that, The clamping mechanism (300) further includes a second driving member (330) and a second clamping block (340). The second clamping block (340) is connected to the output end of the second driving member (330). The second driving member (330) is mounted on the support mechanism (100) and is located on one side of the first driving member (310).

4. The left crankcase pressure plugging device according to claim 3, characterized in that, The clamping mechanism (300) further includes a third driving member (350) and a third clamping block (360). The third clamping block (360) is connected to the output end of the third driving member (350). The third driving member (350) is mounted on the support mechanism (100). The third driving member (350) is located on the same side as the first driving member (310) and the second driving member (330).

5. The left crankcase pressure plugging device according to claim 4, characterized in that, The first driving member (310), the second driving member (330) and the third driving member (350) are arranged at intervals around the limiting mechanism (200).

6. A left crankcase sealing device according to any one of claims 4 or 5, characterized in that, The first drive member (310), the second drive member (330) and the third drive member (350) are all rotary clamping cylinders. The first drive member (310) can drive the first clamping block (320) to rotate and press down, the second drive member (330) can drive the second clamping block (340) to rotate and press down, and the third drive member (350) can drive the third clamping block (360) to rotate and press down.

7. A left crankcase sealing device according to claim 6, characterized in that, The clamping mechanism (300) further includes a first air distribution outlet (370) and a second air distribution outlet (380), which are respectively connected to the first driving member (310), the second driving member (330) and the third driving member (350) through pipes.

8. The left crankcase pressure plugging device according to claim 1, characterized in that, The limiting mechanism (200) includes a first limiting block (210), which is compatible with the left crankshaft housing (700).

9. A left crankcase sealing device according to claim 8, characterized in that, The limiting mechanism (200) further includes a second limiting block (220), which is compatible with the left crankshaft housing (700).

10. A left crankcase sealing device according to claim 1, characterized in that, It also includes a control box (500) for controlling the operation of the clamping mechanism (300) and the pressing mechanism (400).