1. A crankshaft static balance detection device, comprising: bear a frame, connecting pin (2), tension sensor (3) and display (6), main shaft (1-2) of bent axle (1) rotate to be connected bear on the frame, the one end of connecting pin (2) articulates in connecting rod hole (1-6) of bent axle (1), the other end of connecting pin (2) with tension sensor (3) are connected, tension sensor (3) with display (6) are connected, tension sensor (3) are used for detecting the stress state of connecting pin (2), with whether crank axle (1) satisfies the result of static balance requirement and send to display (6) show.

2. The crankshaft static balance detection device according to claim 1, characterized in that the upper end of the connecting pin (2) is provided with a hinged shaft which is matched with the connecting rod hole (1-6), the lower end of the connecting pin (2) is inserted into the detection hole of the tension sensor (3), when the crankshaft (1) is static, the connecting pin (2) and the connecting rod (1-5) of the crankshaft (1) are in a vertical state, and the length of the connecting pin (2) is satisfied that the axis of the main shaft (1) and the axis of the crank pin (1-4) of the crankshaft (1) are in a horizontal state.

3. The crankshaft static balance detection device according to claim 2, characterized in that the carrier comprises a base and a roller bracket (5), the roller bracket (5) is located on the upper portion of the base, and the main shaft (1) is placed on the roller bracket (5).

4. The crankshaft static balance detecting device according to claim 3, characterized in that the base comprises a bottom plate (4) and a left bracket (7) and a right bracket (8) which are arranged on the bottom plate (4), the left bracket (7) and the right bracket (8) are respectively provided with one roller bracket (5), and the tension sensor (3) is positioned on the bottom plate (4) and between the left bracket (7) and the right bracket (8).

5. The crankshaft static balance detection device according to claim 4, characterized in that a limiting part for limiting the axial movement of the main shaft (1) is arranged on the left bracket (7) and/or the right bracket (8).

6. A crankshaft static balance detecting device according to claim 4, characterized in that the display (6) is arranged on the bottom plate (4).

Background

During manufacturing of the crankshaft, a static balance test is required to improve the running stability and the service life of the crankshaft.

At present mainly adopt mechanical balancing pole to detect through the manual work, specifically install a balanced test rod respectively in the left and right sides of balancing pole installation piece, be equipped with the scale scope on one of them balanced test rod, the weight cover is established on this balanced test rod, through removing the weight, two balanced test rods of range estimation keep the level, if the weight is in the scale scope, then judge that the bent axle static balance is qualified, but this operation mode error is great and the rate of accuracy is lower.

Therefore, how to provide a crankshaft static balance detection device to improve the detection accuracy is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a crankshaft static balance detection device which can effectively improve the detection efficiency and the detection accuracy.

In order to achieve the purpose, the invention provides the following technical scheme:

a crankshaft static balance detection device comprising: the crankshaft main shaft is rotatably connected to the bearing frame, one end of the connecting pin is hinged in a connecting rod hole of the crankshaft, the other end of the connecting pin is connected with the tension sensor, the tension sensor is connected with the display, and the tension sensor is used for detecting the stress state of the connecting pin so as to transmit the result of whether the crankshaft meets the static balance requirement to the display for displaying.

Preferably, the upper end of the connecting pin is provided with a hinge shaft matched with the connecting rod hole, the lower end of the connecting pin is inserted into the detection hole of the tension sensor, when the crankshaft is static, the connecting pin and the connecting rod of the crankshaft are both in a vertical state, and the length of the connecting pin meets the requirement that the axis of the main shaft and the axis of the crank pin of the crankshaft are in a horizontal state.

Preferably, the carriage includes a base and a roller bracket, the roller bracket being located at an upper portion of the base, the main shaft being placed on the roller bracket.

Preferably, the base comprises a bottom plate, and a left support and a right support which are arranged on the bottom plate, the left support and the right support are respectively provided with one roller bracket, and the tension sensor is positioned on the bottom plate and between the left support and the right support.

Preferably, a limiting part for limiting the axial movement of the spindle is arranged on the left support and/or the right support.

Preferably, the display is disposed on the base plate.

Compared with the prior art, the technical scheme has the following advantages:

1. the stress condition is detected through the tension sensor, the static balance condition of the crankshaft is reflected, and compared with a traditional manual visual detection mode, the crankshaft static balance detection device has higher detection accuracy, is simple to operate and has higher detection efficiency.

2. Through the gyro wheel support, can improve the convenience and the stability that bent axle static balance detected.

3. The static balance detection result of the crankshaft is displayed through the display, so that the detection is more visual and rapid.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a side view of a crankshaft static balance detection apparatus in accordance with an embodiment of the present invention;

fig. 2 is a top view of a crankshaft static balance detecting device according to an embodiment of the present invention.

The reference numbers are as follows:

the device comprises a crankshaft 1, a main shaft 1-2, a crank 1-3, a crank pin 1-4, a connecting rod 1-5, a connecting rod hole 1-6, a connecting pin 2, a tension sensor 3, a bottom plate 4, a roller bracket 5, a display 6, a left support 7 and a right support 8.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 and 2, fig. 1 is a side view of a crankshaft static balance detecting device according to an embodiment of the present invention; fig. 2 is a top view of a crankshaft static balance detecting device according to an embodiment of the present invention.

The embodiment of the invention provides a crankshaft static balance detection device, a crankshaft 1 comprises a main shaft 1-2, a crank 1-3, a crank pin 1-4 and a connecting rod 1-5, the detection device comprises: the crankshaft type mechanical transmission device comprises a bearing frame, a connecting pin 2, a tension sensor 3 and a display 6, wherein a main shaft 1-2 of a crankshaft 1 is rotatably connected to the bearing frame, one end of the connecting pin 2 is hinged in a connecting rod hole 1-6 of the crankshaft 1, the other end of the connecting pin 2 is connected with the tension sensor 3, and the tension sensor 3 is connected with the display 6. With regard to the carriage, specifically, it includes a base and a roller bracket 5, the roller bracket 5 is located at an upper portion of the base, and the main shaft 1-2 is placed on the roller bracket 5 so that the main shaft 1-2 can rotate on the roller bracket 5. The base comprises a bottom plate 4, a left support 7 and a right support 8 which are arranged on the bottom plate 4, the left support 7 and the right support 8 are used for supporting the main shafts 1-2, and the display 6 can be arranged on the bottom plate 4.

When the crankshaft 1 is rotated and the crankshaft 1 is stable and motionless, because the connecting rod 1-5 side of the crankshaft 1 has light weight and is influenced by gravity, tension can be applied to the connecting pin 2 through the connecting rod 1-5, because the connecting pin 2 is connected with the tension sensor 3, the tension sensor 3 can detect the stress state of the connecting pin 2, when the stress change meets the preset stress range threshold value, the crankshaft 1 meets the static balance requirement, otherwise, the crankshaft is unqualified, and the qualified or unqualified result can be displayed through the display 6. Wherein detect the atress condition through tension sensor 3, react the static balance condition of bent axle 1, for the detection mode of traditional artifical visual, have higher detection accuracy, easy operation moreover, detection efficiency is higher.

The upper end of the connecting pin 2 is provided with a hinged shaft matched with the connecting rod holes 1-6, the lower end of the connecting pin 2 is inserted into a detection hole of the tension sensor 3, when the crankshaft 1 is static, the connecting pin 2 and the connecting rods 1-5 are both in a vertical state, the length of the connecting pin 2 is required to meet the condition that the axis of the main shaft 1-2 and the axis of the crank pins 1-4 are in a horizontal state, after the crankshaft 1 rotates and the crankshaft 1 is stable and motionless, the connecting rods 1-5 can apply tension to the tension sensor 3 through the connecting pin 2, the tension sensor 3 can know stress change, the static balance condition of the crankshaft 1 can be reflected through the stress change, and the stress change of the tension sensor 3 cannot meet a preset stress change threshold value if the crankshaft 1 has the problem of static unbalance.

It should be noted that, as for the specific working principle of the tension sensor 3, reference may be made to the prior art, and details are not repeated herein, and the core of the present application lies in applying the tension sensor 3 in the static balance detection of the crankshaft 1, so as to reflect the static balance condition of the crankshaft 1 through the detection of the connecting pin 2 by the tension sensor 3.

Wherein, the left bracket 7 and the right bracket 8 are respectively provided with a roller bracket 5, the tension sensor 3 is positioned on the bottom plate 4 and positioned between the left bracket 7 and the right bracket 8, when in detection, the crankshaft 1 is placed between the left bracket 7 and the right bracket 8, and the main shaft 1-2 of the crankshaft 1 is placed on the roller bracket 5, and the rotation stability of the main shaft 1-2 can be ensured through the two roller brackets 5.

Furthermore, a limiting part is arranged on the left support 7 or the right support 8, or a limiting part is arranged on each of the left support and the right support, the axial movement of the main shaft 1-2 can be limited through the limiting parts, and therefore when static balance detection is carried out on the crankshaft 1, the left position and the right position of the crankshaft 1 can be guaranteed to be fixed.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The crankshaft static balance detection device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.