Sensor support suitable for engine with narrow interior

Abstract

The utility model discloses a sensor support suitable for an engine with a narrow interior, which comprises a brake side support assembly and a non-brake side support assembly, the brake side support assembly comprises a fuel injector clamp, a brake side sensor and a brake side welding piece, the fuel injector clamp is fixedly connected with a fuel injector, the brake side sensor is connected with the fuel injector clamp, and the brake side welding piece is connected with the non-brake side support assembly. The brake side welding piece is connected with the brake side valve spring seat, the brake side sensor is used for measuring the displacement of the brake side welding piece, the non-brake side support assembly comprises a cylinder cover connecting bolt, a butterfly-shaped supporting plate, a non-brake side sensor and a non-brake side welding piece, one end of the cylinder cover connecting bolt is connected with a threaded hole in a cylinder cover, and the other end of the cylinder cover connecting bolt is connected with the butterfly-shaped supporting plate. The butterfly-shaped supporting plate is connected with the cylinder cover connecting bolt, the non-brake side sensor is connected with the butterfly-shaped supporting plate, and the non-brake side welding piece is connected with the non-brake side valve spring seat. By means of the mode, the valve lift can be measured, and occupied space in an engine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engine valve lift measurement, in particular to a sensor bracket suitable for engines with narrow interiors. Background Art

[0002] The engine valve is an important part of the engine valve train. It opens and closes regularly to ensure that the engine regularly inhales fresh combustible mixture into the cylinder and discharges the exhaust gas from the cylinder in time. Whether it is reliable directly affects the performance of the engine. Especially with the development of engine technology, the pressure in the cylinder increases, the speed increases, and the valve seating speed is often very high. The valve lift is one of the items that need to be tested after the engine is assembled.

[0003] A Chinese patent with announcement number CN203148410U discloses an engine valve lift sensor mounting device, which mounts a valve spring upper seat on a valve spring so that when the valve spring lifts, the valve spring upper seat moves up and down. The lift sensor measures the displacement of the valve spring upper seat to obtain the valve lift data.

[0004] However, this measuring device will occupy a large space inside the engine when measuring the valve lift of the braking and non-braking test, which is not conducive to the compact design and lightweight of the engine. In addition, the distance between the valve spring upper seat and the guide rail is too close. The valve spring seat is a high-speed moving part and can easily fail due to collision. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a device which can measure the valve lift and reduce the space occupied in the engine.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a sensor bracket suitable for an engine with a narrow interior, including: a braking side bracket assembly and a non-braking side bracket assembly, the braking side bracket assembly includes an injector clamp, a braking side sensor and a braking side welding piece, the injector clamp is fixedly connected to the injector, the braking side sensor is connected to the injector clamp, the braking side welding piece is connected to the braking side valve spring seat, the braking side sensor is used to measure the displacement of the braking side welding piece, the non-braking side bracket assembly includes a cylinder head connecting bolt, a butterfly support plate, a non-braking side sensor and a non-braking side welding piece, one end of the cylinder head connecting bolt is connected to the threaded hole on the cylinder head, the butterfly support plate is connected to the cylinder head connecting bolt, the non-braking side sensor is connected to the butterfly support plate, the non-braking side welding piece is connected to the non-braking side valve spring seat, and the non-braking side sensor is used to measure the position of the non-braking side welding piece.

[0007] Preferably, the injector clamp includes a first snap ring, a second snap ring and a locking bolt, the first snap ring and the second snap ring are detachably connected via the locking bolt, and a snap groove is provided at the lower part of the side where the first snap ring and the second snap ring contact the injector, and the snap groove is used to prevent the first snap ring and the second snap ring from rotating on the injector.

[0008] Preferably, a braking side connecting plate is fixedly connected to the first clamping ring or the second clamping ring, and a braking side sensor is mounted on the braking side connecting plate to measure the displacement of the braking side welding plate.

[0009] Preferably, the brake side welding piece is provided with a brake side limiting opening, and a brake side limiting rod is installed on the brake side connecting plate, and the brake side limiting rod is engaged with the brake side limiting opening to prevent the brake side welding piece from rotating.

[0010] Preferably, an adjustment boss is provided between the cylinder head connecting bolt and the butterfly support plate, the lower end of the adjustment boss is connected to the top of the cylinder head connecting bolt, the upper end of the adjustment boss is connected to the butterfly support plate, and the adjustment boss is used to adjust the height of the butterfly support plate.

[0011] Preferably, a non-braking side limit rod is installed on the butterfly support plate, and a non-braking side limit opening is opened on the non-braking side welding piece. The non-braking side limit rod is engaged with the non-braking side limit opening to prevent the non-braking side welding piece from rotating.

[0012] Preferably, the butterfly support plate comprises a first disc portion and a second disc portion, and the non-braking side sensor is mounted on the first disc portion and the second disc portion, respectively.

[0013] Preferably, the braking side welding piece and the non-braking side welding piece are installed symmetrically to each other.

[0014] The beneficial effects of the utility model are:

[0015] 1. By separating the sensor bracket into a brake side bracket assembly and a non-brake side bracket assembly, the sensor position is arranged in a targeted manner, reducing the overall space occupation, making the structure more compact and lightweight;

[0016] 2. The connection between the injector fixture and the injector ensures the stability of the overall position of the brake side bracket assembly. The connection between the cylinder head connecting bolt and the engine bolt hole ensures the stability of the overall position of the non-brake side bracket assembly, thereby stabilizing the position of the sensor and ensuring basic measurement accuracy. The cooperation between the limit rod and the welding piece prevents the welding piece from rotating with the valve spring seat, further ensuring the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 yes Figure 1 A magnified schematic diagram of the middle part;

[0019] Figure 3 It is a structural schematic diagram of the adjusting boss of the utility model.

[0020] The markings of the components in the accompanying drawings are as follows:

[0021] 11. Injector fixture; 111. First snap ring; 112. Second snap ring; 113. Lock bolt; 114. Connecting part; 115. Braking side connecting plate; 1151. Braking side limit rod; 12. Braking side sensor;

[0022] 13. Braking side welding piece; 131. Braking side limit opening;

[0023] 21. Cylinder head connecting bolt; 22. Butterfly support plate; 221. First disc portion; 222. Second disc portion; 23. Non-braking side sensor; 24. Non-braking side welding plate; 241. Non-braking side limit opening; 25. Adjusting boss; 251. Connecting screw; 252. Second connecting threaded hole; 26. Non-braking side limit rod. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0030] Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0031] Example:

[0032] refer to Figure 1 and Figure 2A sensor bracket suitable for an engine with a narrow interior, comprising: a brake side bracket assembly and a non-brake side bracket assembly, the brake side bracket assembly comprising an injector fixture 11, a brake side sensor 12 and a brake side welding piece 13, the injector fixture 11 is fixedly connected to the injector, the brake side sensor 12 is connected to the injector fixture 11, the brake side welding piece 13 is connected to the brake side valve spring seat, and the brake side sensor 12 is used to measure the displacement of the brake side welding piece 13;

[0033] The non-brake side bracket assembly includes a cylinder head connecting bolt 21, a butterfly support plate 22, a non-brake side sensor 23 and a non-brake side welding plate 24. One end of the cylinder head connecting bolt 21 is connected to the threaded hole on the cylinder head, the butterfly support plate 22 is connected to the cylinder head connecting bolt 21, the non-brake side sensor 23 is connected to the butterfly support plate 22, the non-brake side welding plate 24 is connected to the non-brake side valve spring seat, and the non-brake side sensor 23 is used to measure the position of the non-brake side welding plate 24.

[0034] refer to Figure 1 and Figure 2 The injector fixture 11 includes a first snap ring 111, a second snap ring 112 and a locking bolt 113. The first snap ring 111 and the second snap ring 112 are detachably connected through the locking bolt 113. A slot is provided at the lower part of the side where the first snap ring 111 and the second snap ring 112 contact the injector. The slot cooperates with the outer periphery of the injector to prevent the first snap ring 111 and the second snap ring 112 from rotating on the injector, thereby ensuring the stability of the position of the injector fixture 11, and further ensuring the stability of the overall position of the brake bracket assembly.

[0035] refer to Figure 1 and Figure 2 In order to facilitate the mutual connection between the first snap ring 111 and the second snap ring 112 through the locking bolt 113, so that the injector fixture 11 is fixed on the injector, both ends of the first snap ring 111 and the second snap ring 112 are extended with connecting parts 114, and the connecting part 114 on the first snap ring 111 and the connecting part 114 on the second snap ring 112 are provided with coaxial threaded holes, so that the locking bolt 113 is threadedly matched with the threaded hole to achieve mutual locking between the first snap ring 111 and the second snap ring 112.

[0036] refer to Figure 1 and Figure 2A braking side connecting plate 115 is fixedly connected to the first retaining ring 111 or the second retaining ring 112, and the braking side sensor 12 is installed on the braking side connecting plate 115 for measuring the displacement of the braking side welding plate 13. The braking side welding plate 13 is provided with a braking side limiting opening 131, and a braking side limiting rod 1151 is installed on the braking side connecting plate 115. The braking side limiting rod 1151 is engaged with the braking side limiting opening 131, so as to prevent the braking side welding plate 13 from rotating along with the valve spring seat on the braking side when the engine is running, thereby ensuring the accuracy of the measurement result, and the braking side connecting plate 115 provides an installation space for the braking side sensor 12 and the braking side limiting rod 1151.

[0037] refer to Figure 1-Figure 3 An adjusting boss 25 is provided between the cylinder head connecting bolt 21 and the butterfly support plate 22. The lower end of the adjusting boss 25 is connected to the top of the cylinder head connecting bolt 21. A connecting screw 251 extends from the bottom of the adjusting boss 25. A first connecting threaded hole is provided at the top of the cylinder head connecting bolt 21, so that the adjusting boss 25 is threadedly matched with the first connecting threaded hole through the connecting screw 251, thereby fixing the adjusting boss 25 on the cylinder head connecting bolt 21. A second connecting threaded hole 252 is provided at the upper end of the adjusting boss 25. The butterfly support plate 22 is connected to the second connecting threaded hole 252 by bolts, thereby connecting the butterfly support plate to the adjusting boss 25. The adjusting boss 25 is used to adjust the height of the butterfly support plate 22.

[0038] refer to Figure 1 and Figure 2 A non-braking side limit rod 26 is installed on the butterfly support plate 22, and a non-braking side limit opening 241 is opened on the non-braking side welding piece 24. The non-braking side limit rod 26 is engaged with the non-braking side limit opening 241, thereby preventing the non-braking side welding piece 24 from rotating along with the valve spring seat on the non-braking side when the engine is running, thereby ensuring the accuracy of the measurement result.

[0039] refer to Figure 1 and Figure 2 The butterfly support plate 22 includes a first disc portion 221 and a second disc portion 222, and the non-braking side sensor 23 is respectively mounted on the first disc portion 221 and the second disc portion 222, thereby achieving the requirement that the butterfly support plate 22 can be equipped with two non-braking side sensors 23, and can also be suitable for a narrow space.

[0040] refer to Figure 1 and Figure 2 The installation of the brake side welding piece 13 and the non-brake side welding piece 24 is arranged symmetrically, so that the brake side welding piece 13 and the non-brake side welding piece 24 can be made of the same part. When installing, they only need to be turned upside down to be welded to the corresponding valve spring seat, which reduces the number of parts and reduces the installation error rate.

[0041] Usage process: put the first clamp ring 111 and the second clamp ring 112 on the injector, then tighten the locking bolt 113 to fix the injector fixture 11 on the injector, install the brake side sensor 12 on the brake side connecting plate 115, adjust the position of the brake side welding piece 13, and then weld the brake side welding piece 13 to the brake side valve spring seat;

[0042] Screw the cylinder head connecting bolt 21 onto the threaded hole of the engine, then install the adjusting boss 25 and the butterfly support plate 22 in sequence, and then install the non-brake side sensor 23 and the non-brake side limit rod 26 on the butterfly support plate 22, adjust the position of the non-brake side welding piece 24 and weld it to the non-brake side valve spring seat.

[0043] During measurement, the engine is running, and its valve reciprocates, driving the valve spring seat to move up and down. The valve spring seat drives the welding piece to move up and down, so that the sensor measures the displacement of the welding piece and obtains the displacement of the valve lift.

[0044] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sensor bracket suitable for an engine with a narrow interior, characterized in that: include: A brake side bracket assembly and a non-brake side bracket assembly, wherein the brake side bracket assembly comprises an injector fixture (11), a brake side sensor (12) and a brake side welding piece (13), wherein the injector fixture (11) is fixedly connected to the injector, the brake side sensor (12) is connected to the injector fixture (11), the brake side welding piece (13) is connected to the brake side valve spring seat, the brake side sensor (12) is used to measure the displacement of the brake side welding piece (13), and the non-brake side bracket assembly comprises a cylinder A cylinder head connecting bolt (21), a butterfly support plate (22), a non-brake side sensor (23) and a non-brake side welding plate (24), wherein one end of the cylinder head connecting bolt (21) is connected to a threaded hole on the cylinder head, the butterfly support plate (22) is connected to the cylinder head connecting bolt (21), the non-brake side sensor (23) is connected to the butterfly support plate (22), the non-brake side welding plate (24) is connected to a non-brake side valve spring seat, and the non-brake side sensor (23) is used to measure the position of the non-brake side welding plate (24).

2. A sensor bracket suitable for an engine with a narrow interior according to claim 1, characterized in that: The injector fixture (11) comprises a first snap ring (111), a second snap ring (112) and a locking bolt (113); the first snap ring (111) and the second snap ring (112) are detachably connected via the locking bolt (113); a snap groove is provided at the lower part of the side of the first snap ring (111) and the second snap ring (112) in contact with the injector; the snap groove is used to prevent the first snap ring (111) and the second snap ring (112) from rotating on the injector.

3. A sensor bracket suitable for an engine with a narrow interior according to claim 2, characterized in that: A braking side connecting plate (115) is fixedly connected to the first clamping ring (111) or the second clamping ring (112), and the braking side sensor (12) is mounted on the braking side connecting plate (115) and is used to measure the displacement of the braking side welding plate (13).

4. A sensor bracket suitable for an engine with a narrow interior according to claim 3, characterized in that: The brake side welding piece (13) is provided with a brake side limiting opening (131), and a brake side limiting rod (1151) is installed on the brake side connecting plate (115), and the brake side limiting rod (1151) is engaged with the brake side limiting opening (131) to prevent the brake side welding piece (13) from rotating.

5. The sensor bracket suitable for an engine with a narrow interior according to claim 1, characterized in that: An adjusting boss (25) is provided between the cylinder head connecting bolt (21) and the butterfly support plate (22); the lower end of the adjusting boss (25) is connected to the top of the cylinder head connecting bolt (21); the upper end of the adjusting boss (25) is connected to the butterfly support plate (22); and the adjusting boss (25) is used to adjust the height of the butterfly support plate (22).

6. A sensor bracket suitable for an engine with a narrow interior according to claim 5, characterized in that: A non-braking side limiting rod (26) is installed on the butterfly support plate (22), a non-braking side limiting opening (241) is provided on the non-braking side welding plate (24), and the non-braking side limiting rod (26) is engaged with the non-braking side limiting opening (241) to prevent the non-braking side welding plate (24) from rotating.

7. The sensor bracket suitable for an engine with a narrow interior according to claim 1, characterized in that: The butterfly support plate (22) comprises a first disc portion (221) and a second disc portion (222), and the non-braking side sensor (23) is mounted on the first disc portion (221) and the second disc portion (222), respectively.

8. A sensor bracket suitable for an engine with a narrow interior according to any one of claims 1 to 7, characterized in that: The braking side welding piece (13) and the non-braking side welding piece (24) are installed symmetrically to each other.

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