Engine cylinder cover valve testing fixture

Abstract

The utility model relates to the technical field of grouting material production, in particular to an engine cylinder cover valve testing fixture, which comprises a measuring scale, a valve limit seat fixedly mounted at the lower edge of one side of the measuring scale, a vernier slidably sleeved at the upper end of the measuring scale, the valve limit seat comprises a seat body, and a valve head clamping groove is arranged on one side of the upper surface of the seat body. A base disc is fixedly installed on the bottom side of the valve head clamping groove, a plurality of rubber sleeves are installed on the base disc at equal intervals in the up-down direction in a penetrating mode, rough faces are arranged on the inner side surfaces of the rubber sleeves, and valve top face detection columns are slidably connected to inner holes of the rubber sleeves in a sleeved mode. According to the utility model, the head of the valve is clamped from the opening of the valve head clamping groove, so that the top surface of the valve abuts against the upper surface of each valve top surface detection column, and the valve presses each valve top surface detection column to slide downwards until the top surface of the valve is in contact with the upper surface of the base disc; the valve top surface detection columns which are not pressed on the periphery of the valve head can relatively abut against the edge of the valve head, and a certain positioning effect can be provided for the valve head.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting material production, in particular to an engine cylinder head valve inspection tool. Background Art

[0002] As an important component of the engine's intake and exhaust structure, the valve stem's curvature, length and the condition of the valve head need to be tested during maintenance of the engine cylinder head and during valve production to ensure that the values ​​of the valve's overall structure are within the normal range.

[0003] In current inspection work, measuring tools such as vernier calipers are often needed when measuring the length of valves. The measuring tools and the valve body need to be held separately for measurement, and the accuracy is difficult to guarantee. In addition, if the valve to be inspected has a certain degree of curvature, the handheld valve itself is in a tilted state, and the measured data will be even more inaccurate. Utility Model Content

[0004] The utility model aims to provide an engine cylinder head valve inspection tool to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A valve inspection tool for an engine cylinder head comprises a measuring ruler, a valve limit seat is fixedly installed on the lower edge of one side of the measuring ruler, a cursor is slidably sleeved on the upper end of the measuring ruler, the valve limit seat comprises a seat body, a valve head clamping groove is provided on one side of the upper surface of the seat body, a base plate is fixedly installed on the bottom side of the valve head clamping groove, a plurality of rubber sleeves are equidistantly installed on the base plate in the upper and lower directions, a rough surface is provided on the inner surface of the rubber sleeve, and a valve top surface detection column is slidably sleeved on the inner hole of the rubber sleeve.

[0007] Further, the measuring ruler includes a base, a ruler column slot is provided at one end of the upper surface of the base, a holder is clamped in the ruler column slot, the holder is fixedly installed on the lower end of the measuring ruler column, a limit top plate is fixedly installed on the upper end of the measuring ruler column, clamp slide grooves are provided on both sides of the measuring ruler column, side mark slide grooves are provided on the front and rear edges of both sides of the measuring ruler column, and a main scale is provided in the middle of the front surface of the measuring ruler column.

[0008] Further, a valve post slot is inserted and opened on the upper side of the valve head slot.

[0009] Furthermore, a detection column top surface is fixedly installed at the lower end of the valve top surface detection column, a top plate is slidably installed below the base plate, handles are fixedly installed on both sides of the top plate, and a return spring is fixedly installed on the upper side of the handle.

[0010] Further, the cursor includes a sliding sleeve, fixture moving grooves are formed on both sides of the sliding sleeve, a rocker is rotatably installed in the middle of the fixture moving grooves, a chuck is fixedly installed at the lower end of the rocker, a support plate is fixedly installed at the lower edge of the outer opening of the fixture moving grooves, and a second return spring is fixedly connected between the support plate and the lower end of the rocker.

[0011] Further, sliding side frames are fixedly installed on both sides of the bottom of the sliding sleeve, a pulley is fixedly installed in the middle of the inner surface of the sliding side frames, a minute scale is formed on the front surface of the sliding side frame on one side of the bottom side of the sliding sleeve, a corner bracket is fixed on the side of the sliding side frame where the minute scale is formed on the bottom side of the sliding sleeve, and a pressing foot is fixedly installed at the lower end of the corner bracket.

[0012] Further, the seat body is fixedly installed at the lower edge of one side of the base, the sliding sleeve is slidably sleeved with the measuring scale column, the chuck is slidably clamped with the fixture chute, and the pulley is slidably clamped with the fixture chute.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The valve head is inserted into the opening of the valve head clamping groove, so that the valve top surface abuts against the upper surfaces of the respective valve top surface detection columns. Then, the cursor is slid down from the upper end of the measuring scale, and the lower end of the cursor is used to press the top end of the valve stem for measurement. At the same time, each valve top surface detection column is pressed to slide down until the valve top surface contacts the upper surface of the base plate. The clamping force provided by the elasticity of the rubber sleeve itself on the side surface of the valve top surface detection column and the increased friction force of the rough surface provide a certain damping effect for the valve top surface detection column, avoiding the free fall of the valve top surface detection column under the action of gravity. The valve top surface detection columns not pressed by the periphery of the valve head can relatively abut against the edge of the valve head, providing a certain positioning effect for the valve head. At the same time, after detecting the actual height of the valve, the valve is lifted to expose each valve top surface detection column pressed by the valve top surface. The top ends of the valve top surface detection columns that are partially pressed by the valve top surface but still exposed above the base plate surface are used to display the actual situation of the valve top surface in a manner similar to point cloud distribution, so as to visually display whether the valve top surface is distorted and the approximate situation of the distortion, and perform the detection work on the valve top surface.

[0015] 2. Hold the sliding sleeve and drive the sliding side frame to slide up and down. The two sets of pulleys slide and abut against the fixture sliding grooves on both sides of the measuring scale column, providing sliding support for the entire cursor, keeping the cursor in a stable state at all times, avoiding angular deviation during sliding, and affecting the detection accuracy. The sliding side frame drives the pressure foot to move down through the angle code, so that the bottom side of the pressure foot abuts against the upper end of the valve stem for measurement. It should be noted that the upper surface of the base plate is zero degree, and the lowest end of the main scale is the distance reading between the upper surface of the base plate and the upper surface of the base. At the same time, the elastic potential energy accumulated by the second reset spring pushes the lower end of the rocker, so that the chuck abuts against the inner wall of the fixture sliding groove, providing a clamping and positioning effect to prevent the cursor from sliding freely on the measuring scale column. Description of the Drawings

[0016] Figure 1 is the schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is the schematic diagram of the measuring scale in the present utility model;

[0018] Figure 3 is the schematic diagram of the valve limit seat in the present utility model;

[0019] Figure 4 is the schematic diagram of the base plate part in the present utility model;

[0020] Figure 5 is the schematic diagram of the cursor in the present utility model.

[0021] In the figure: 1. Measuring scale; 101. Base; 102. Scale column slot; 103. Clamping seat; 104. Measuring scale column; 105. Limit top plate; 106. Fixture sliding groove; 107. Side scale sliding groove; 108. Main scale; 2. Valve limit seat; 201. Seat body; 202. Valve head slot; 203. Valve column slot; 204. Base plate; 205. Rubber sleeve; 206. Rough surface; 207. Valve top surface detection column; 208. Detection column top surface; 209. Top plate; 210. Handle; 211. First reset spring; 3. Cursor; 301. Sliding sleeve; 302. Fixture movable slot; 303. Rocker; 304. Chuck; 305. Support plate; 306. Second reset spring; 307. Sliding side frame; 308. Pulley; 309. Sub-scale; 310. Angle code; 311. Pressure foot. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 to 5 In the embodiment of the present utility model, a valve inspection tool for an engine cylinder head includes a measuring scale 1. A valve limiting seat 2 is fixedly installed at the lower edge on one side of the measuring scale 1. A vernier 3 is slidably sleeved on the upper end of the measuring scale 1. The valve limiting seat 2 includes a seat body 201. A valve head clamping groove 202 is formed on one side of the upper surface of the seat body 201. A base plate 204 is fixedly installed at the bottom side of the valve head clamping groove 202. A plurality of rubber sleeves 205 are inserted and installed in the vertical direction at equal intervals on the base plate 204. A rough surface 206 is formed on the inner surface of the rubber sleeve 205. A valve top surface detection column 207 is slidably sleeved in the inner hole of the rubber sleeve 205.

[0024] Specifically, when detecting the valve, first insert the valve head into the valve head clamping groove 202 from the opening, so that the valve top surface abuts against the upper surfaces of the respective valve top surface detection columns 207. Then slide the vernier 3 down from the upper end of the measuring scale 1, use the lower end of the vernier 3 to press the top end of the valve stem to carry out the measurement work. At the same time, press each valve top surface detection column 207 to slide down until the valve top surface contacts the upper surface of the base plate 204. The clamping force provided by the elasticity of the rubber sleeve 205 itself on the side surface of the valve top surface detection column 207 and the increased friction force of the rough surface 206 provide a certain damping effect for the valve top surface detection column 207, avoiding the free fall of the valve top surface detection column 207 under the action of gravity. The valve top surface detection columns 207 that are not pressed around the valve head can relatively abut against the edge of the valve head, providing a certain positioning effect for the valve head. At the same time, after detecting the actual height of the valve, lift the valve to expose the respective valve top surface detection columns 207 pressed by the valve top surface. The tops of the valve top surface detection columns 207 that are partially pressed by the valve top surface but still expose the upper surface of the base plate 204 show the actual situation of the valve top surface in a point cloud-like distribution manner, so as to visually display whether the valve top surface is distorted and the general situation of the distortion, and carry out the detection work on the valve top surface.

[0025] Embodiment 1

[0026] As Figure 3 shown, in this embodiment, a valve stem clamping groove 203 is formed by inserting through the upper side of the valve head clamping groove 202.

[0027] In this embodiment, when the valve stem is inserted into the valve stem clamping groove 203, it plays a certain positioning role when the valve head is inserted into the valve head clamping groove 202, avoiding excessive deviation of the actual position of the valve head itself when pressing the valve top surface detection column 207.

[0028] As Figure 3 、 4As shown, in this embodiment, a detection column top surface 208 is fixedly installed at the lower end of the valve top surface detection column 207. A top plate 209 is slidably installed below the base plate 204. Handles 210 are fixedly installed on both sides of the top plate 209, and a first return spring 211 is fixedly installed on the upper side of the handles 210.

[0029] During specific implementation, after the overall height of the valve is measured, the top plate 209 is lifted by the two groups of handles 210 to abut against the respective detection column top surfaces 208, and the respective valve top surface detection columns 207 are reset.

[0030] Embodiment Two

[0031] On the basis of Embodiment One, in order to make up for the specific operation method of the overall structure for valve height detection not mentioned in Embodiment One.

[0032] As Figures 1 - 2 As shown in FIGS. 4 and 5, in this embodiment, the measuring ruler 1 includes a base 101. A ruler column slot 102 is formed at one end of the upper surface of the base 101. A clamping seat 103 is clamped in the ruler column slot 102. The clamping seat 103 is fixedly installed at the lower end of the measuring ruler column 104. A limiting top plate 105 is fixedly installed at the upper end of the measuring ruler column 104. Clamping fixture chutes 106 are formed on both sides of the measuring ruler column 104. Side scale chutes 107 are formed at the front and rear edges on both sides of the measuring ruler column 104. A main scale table 108 is formed in the middle of the front surface of the measuring ruler column 104; The vernier 3 includes a sliding sleeve 301. Clamping fixture movable slots 302 are formed on both sides of the sliding sleeve 301. A rocker 303 is rotatably installed in the middle of the clamping fixture movable slots 302. A clamping head 304 is fixedly installed at the lower end of the rocker 303. A support plate 305 is fixedly installed at the lower edge of the outer opening of the clamping fixture movable slots 302. A second return spring 306 is fixedly connected between the support plate 305 and the lower end of the rocker 303; Sliding side frames 307 are fixedly installed on both sides of the bottom of the sliding sleeve 301. Pulleys 308 are fixedly installed in the middle of the inner surface of the sliding side frames 307. A sub-scale table 309 is formed on the front surface of the sliding side frame 307 on one side of the bottom side of the sliding sleeve 301. An angle code 310 is fixed on one side of the sliding side frame 307 provided with the sub-scale table 309 at the bottom side of the sliding sleeve 301. A pressure foot 311 is fixedly installed at the lower end of the angle code 310; The seat body 201 is fixedly installed at the lower edge of one side of the base 101. The sliding sleeve 301 is slidably sleeved on the measuring ruler column 104. The clamping head 304 is slidably clamped in the clamping fixture chute 106. The pulley 308 is slidably clamped in the clamping fixture chute 106.

[0033] During specific implementation, hold the sliding sleeve 301 and drive the sliding side frame 307 to slide up and down. The two groups of pulleys 308 slide and abut against the fixture chutes 106 on both sides of the measuring scale column 104 to provide sliding support for the entire vernier 3, keeping the vernier 3 in a stable state at all times and preventing the vernier 3 from deviating in angle during sliding, which may affect the detection accuracy. The sliding side frame 307 drives the pressure foot 311 to move downward through the angle bracket 310, so that the bottom side of the pressure foot 311 abuts against the upper end of the valve stem for measurement. It should be noted that the upper surface of the base plate 204 is at zero degree, and the bottommost end of the main scale 108 is the reading of the distance between the upper surface of the base plate 204 and the upper surface of the base 101. At the same time, the elastic potential energy accumulated by the second reset spring 306 pushes the lower end of the rocker 303, so that the chuck 304 abuts against the inner wall of the fixture chute 106 to provide a clamping and positioning effect, preventing the vernier 3 from sliding freely on the measuring scale column 104.

[0034] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An engine cylinder head valve inspection tool, including a measuring ruler (1), characterized in that, On one side of the lower edge of the measuring ruler (1), a valve limit seat (2) is fixedly installed. A cursor (3) is slidably sleeved on the upper end of the measuring ruler (1). The valve limit seat (2) includes a seat body (201). On one side of the upper surface of the seat body (201), a valve head clamping groove (202) is opened. At the bottom side of the valve head clamping groove (202), a base plate (204) is fixedly installed. A number of rubber sleeves (205) are inserted and installed in the base plate (204) at equal intervals in the up and down direction. A rough surface (206) is provided on the inner surface of the rubber sleeve (205). A valve top surface detection column (207) is slidably sleeved in the inner hole of the rubber sleeve (205).

2. The valve inspection tool for an engine cylinder head according to claim 1, wherein The measuring ruler (1) includes a base (101). At one end of the upper surface of the base (101), a ruler column clamping groove (102) is opened. A clamping seat (103) is clamped in the ruler column clamping groove (102). The clamping seat (103) is fixedly installed at the lower end of the measuring ruler column (104). A limit top plate (105) is fixedly installed at the upper end of the measuring ruler column (104). Clamping grooves (106) are opened on both sides of the measuring ruler column (104). Side scale grooves (107) are opened on the front and rear edges on both sides of the measuring ruler column (104). A main scale table (108) is opened in the middle of the front surface of the measuring ruler column (104).

3. The valve inspection tool for an engine cylinder head according to claim 2, characterized in that, A valve column clamping groove (203) is inserted and opened above the valve head clamping groove (202).

4. The valve inspection tool for an engine cylinder head according to claim 3, characterized in that, At the lower end of the valve top surface detection column (207), a detection column top surface (208) is fixedly installed. A top plate (209) is slidably installed below the base plate (204). Handles (210) are fixedly installed on both sides of the top plate (209). A first return spring (211) is fixedly installed above the handle (210).

5. The valve inspection tool for an engine cylinder head according to claim 4, wherein, The cursor (3) includes a sliding sleeve (301). Clamping grooves (302) are opened on both sides of the sliding sleeve (301). A rocker (303) is rotatably installed in the middle of the clamping groove (302). A clamping head (304) is fixedly installed at the lower end of the rocker (303). A support plate (305) is fixedly installed at the lower edge of the outer opening of the clamping groove (302). A second return spring (306) is fixedly connected between the support plate (305) and the lower end of the rocker (303).

6. The valve inspection tool for an engine cylinder head according to claim 5, characterized in that, Sliding side frames (307) are fixedly installed on both sides of the bottom of the sliding sleeve (301). A pulley (308) is fixedly installed in the middle of the inner surface of the sliding side frame (307). A sub-scale table (309) is opened on the front surface of the sliding side frame (307) on one side of the bottom side of the sliding sleeve (301). A corner code (310) is fixed on one side of the sliding side frame (307) where the sub-scale table (309) is opened at the bottom side of the sliding sleeve (301). A pressing foot (311) is fixedly installed at the lower end of the corner code (310).

7. The valve inspection tool for an engine cylinder head according to claim 6, characterized in that, The seat body (201) is fixedly installed on one side of the lower edge of the base (101). The sliding sleeve (301) is slidably sleeved with the measuring ruler column (104). The clamping head (304) is slidably clamped with the clamping groove (106). The pulley (308) is slidably clamped with the clamping groove (106).

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