Oil injector hole depth testing fixture

Abstract

The utility model relates to the technical field of oil injectors, in particular to an oil injector hole depth gauge which comprises a correction assembly and a connection assembly, the connection assembly is fixedly connected with a shell assembly, a measuring rod assembly is arranged on the inner side of the shell assembly, and a dial indicator assembly is arranged on the upper side of the measuring rod assembly. When depth inspection is carried out on oil injector holes of different models, the correction assembly is adjusted to adapt to the depths of the oil injector holes of different models. When depth inspection is carried out on oil injector holes of different models, if the depth difference of the two oil injector holes of different models is large, the measuring rod assembly is adjusted to adapt to the oil injector holes of a larger depth range. The adjustable correction assembly and the measuring rod assembly can enable the device to adapt to the depth inspection of oil injector holes of different models, the operation steps are simple and convenient, and the production cost is reduced at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of fuel injectors, in particular to a fuel injector hole depth gauge. Background Art

[0002] At present, the method for testing the depth of the cylinder head injector hole (or spark plug hole) is to put a special test rod into the injector hole, use a height gauge to test the height of the special test rod protruding from the bottom of the cylinder head, and then subtract the protruding height from the length of the special test rod to obtain the depth of the cylinder head injector hole. Using this test method, the test data obtained is inaccurate, there is a misjudgment phenomenon, and it is easy to produce unqualified products.

[0003] The invention patent with application publication number "CN 112304197A" proposes a "cylinder head injector hole depth gauge". This invention directly reflects the value of the up and down movement of the measuring rod to the dial indicator in a mechanical transmission manner, making it more convenient, quick, accurate and reliable to read data, which can fully meet the needs of production and processing. However, this invention still has some problems during use: First, the proofreading block of this invention is a non-adjustable fixed structure, and can only be calibrated when inspecting injector holes of a specific size. When inspecting the depth of injector holes of different models, it is necessary to replace the corresponding proofreading block in time for proofreading, so it is necessary to It is necessary to produce calibration blocks of various specifications; secondly, the measuring rod of the invention is a non-adjustable fixed structure, and can only be used normally when inspecting injector holes within a certain depth range. When inspecting the depth of injector holes of different types, if the depth difference between two different types of injector holes is large, it is necessary to replace measuring rods of different lengths for inspection, so it is necessary to produce measuring rods of various specifications; calibration blocks and measuring rods of various specifications lead to complicated operation steps and high production costs when the device inspects the depth of injector holes of different types. Therefore, an injector hole depth gauge is proposed to address the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a fuel injector hole depth gauge to solve the problem that various specifications of calibration blocks and measuring rods result in complicated operation steps and high production cost when the device is used to inspect the fuel injector hole depths of different models.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The injector hole depth gauge comprises a correction component and a connection component. The connection component is fixedly connected to a housing component. A measuring rod component is arranged inside the housing component. A dial indicator component is arranged on the upper side of the measuring rod component.

[0007] Preferably, the correction assembly includes a hydraulic rod and a controller, the outer side of the hydraulic rod is fixedly connected to the controller, the top of the hydraulic rod is fixedly connected to the correction tube, the front side of the correction tube is provided with a fixing groove, the correction tube is fixedly connected to the scale shaft through the fixing groove, the front side of the scale shaft is provided with a scale, the upper half of the outer side of the correction tube is fixedly connected to the first limit sleeve, and the front side of the first limit sleeve is provided with a groove.

[0008] Preferably, the connecting assembly includes a first bushing and a second bushing, the lower half of the first bushing is fixedly connected to the top inner side of the first shell, a cylindrical groove is provided on the inner side of the first bushing, the first bushing is slidably connected to the connecting shaft through the cylindrical groove, the upper half of the second bushing is fixedly connected to the bottom inner side of the second shell, a cylindrical groove is provided on the inner side of the second bushing, the diameter of the cylindrical groove of the second bushing is the same as the maximum diameter of the outer thread of the second adjusting rod, the top of the first bushing is fixedly connected to the second limiting sleeve, the left side of the second limiting sleeve is spirally connected to the locking bolt, and the second limiting sleeve is clamped with the locking bolt and the wear-resistant sleeve.

[0009] Preferably, the shell assembly includes a first shell and a second shell, the second shell is welded to the bottom of the first shell, a first through groove is provided on the inner side of the first shell, a second through groove is provided on the inner side of the second shell, the first shell is slidably connected to the first limit block and the second limit block through the first through groove, and the second shell is slidably connected to the third limit sleeve through the second through groove.

[0010] Preferably, the measuring rod assembly includes a first limit block and a second limit block, the top of the first limit block is fixedly connected to the bottom end of the connecting shaft, the outer side of the connecting shaft is slidably connected to the second limit block, the top of the first limit block is fixedly connected to the bottom end of the compression spring, the top of the compression spring is fixedly connected to the bottom of the second limit block, the bottom of the first limit block is fixedly connected to the first adjusting rod, the outer side of the first adjusting rod is fixedly connected to the third limit sleeve, the inner side of the first adjusting rod is provided with a threaded groove, the first adjusting rod is spirally connected to the second adjusting rod through the threaded groove, the outer side of the second adjusting rod is provided with a threaded protrusion, and the bottom end of the second adjusting rod is fixedly connected to the inspection head.

[0011] Preferably, the dial indicator assembly includes a wear-resistant sleeve and a fixed rod, the inner side of the wear-resistant sleeve is fixedly connected to the fixed rod, the inner side of the fixed rod is slidably connected to the measuring rod, the top of the fixed rod is fixedly connected to the meter body, and the outer side of the meter body is rotatably connected to the dial.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In the present invention, by setting a correction component and a measuring rod component, when performing depth inspections on injector holes of different models, the correction component can be adjusted to adapt to the depths of injector holes of different models; when performing depth inspections on injector holes of different models, if the depths of two injector holes of different models are greatly different, the measuring rod component can be adjusted to adapt to injector holes of a larger depth range; the adjustable correction component and measuring rod component can enable the device to adapt to depth inspections on injector holes of different models, and the operation steps are relatively simple, while reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is an exploded view of the overall structure of the present invention;

[0016] Figure 3 This is an exploded view of the correction component structure of the present invention;

[0017] Figure 4 It is an exploded diagram of the measuring mechanism structure of the present invention;

[0018] Figure 5 It is an exploded view of the structure of the dial indicator assembly of the present invention;

[0019] Figure 6 It is a cross-sectional view of the measuring mechanism structure of the present invention;

[0020] Figure 7 It is a cross-sectional view of the connection assembly structure of the present invention;

[0021] Figure 8 It is a cross-sectional view of the structure of the housing component of the present invention;

[0022] Fig. 9 It is a cross-sectional view of the structure of the measuring rod assembly of the present invention;

[0023] Fig.10 It is an exploded view of the measuring rod assembly structure of the present invention.

[0024] In the figure: 1. correction component; 101. hydraulic rod; 102. controller; 103. correction tube; 104. scale shaft; 105. first limit sleeve; 2. connection component; 201. first bushing; 202. second bushing; 203. second limit sleeve; 204. locking bolt; 3. housing component; 301. first shell; 302. second shell; 303. first through groove; 304. second through groove; 4. measuring rod component; 401. first limit block; 402. second limit block; 403. connecting shaft; 404. compression spring; 405. first adjusting rod; 406. third limit sleeve; 407. second adjusting rod; 408. inspection head; 5. dial indicator component; 501. wear-resistant sleeve; 502. fixing rod; 503. measuring rod; 504. meter body; 505. dial. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0028] See also Figure 1-10 , the present invention provides a technical solution:

[0029] The injector hole depth gauge comprises a correction component 1 and a connection component 2. The connection component 2 is fixedly connected to a housing component 3. A measuring rod component 4 is arranged inside the housing component 3. A dial indicator component 5 is arranged on the upper side of the measuring rod component 4.

[0030] Furthermore, the correction component 1 includes a hydraulic rod 101 and a controller 102. The outer side of the hydraulic rod 101 is fixedly connected to the controller 102. The top of the hydraulic rod 101 is fixedly connected to the correction tube 103. The front side of the correction tube 103 is provided with a fixing groove. The correction tube 103 is fixedly connected to the scale shaft 104 through the fixing groove. The front side of the scale shaft 104 is provided with a scale. The upper half of the outer side of the correction tube 103 is fixedly connected to the first limit sleeve 105. The front side of the first limit sleeve 105 is provided with a groove.

[0031] Further, the connecting assembly 2 includes a first bushing 201 and a second bushing 202. The lower half of the first bushing 201 is fixedly connected to the inner top of the first shell 301. A cylindrical groove is provided on the inner side of the first bushing 201. The first bushing 201 is slidably connected to the connecting shaft 403 through the cylindrical groove. The upper half of the second bushing 202 is fixedly connected to the inner bottom of the second shell 302. A cylindrical groove is provided on the inner side of the second bushing 202. The diameter of the cylindrical groove of the second bushing 202 is the same as the maximum diameter of the outer thread of the second adjusting rod 407. The top of the first bushing 201 is fixedly connected to the second limiting sleeve 203. The left side of the second limiting sleeve 203 is spirally connected to the locking bolt 204. The second limiting sleeve 203 is engaged with the wear-resistant sleeve 501 through the locking bolt 204.

[0032] Furthermore, the shell assembly 3 includes a first shell 301 and a second shell 302, the second shell 302 is welded to the bottom of the first shell 301, a first through groove 303 is provided on the inner side of the first shell 301, and a second through groove 304 is provided on the inner side of the second shell 302, the first shell 301 is slidably connected to the first limit block 401 and the second limit block 402 through the first through groove 303, and the second shell 302 is slidably connected to the third limit sleeve 406 through the second through groove 304.

[0033] Furthermore, the measuring rod assembly 4 includes a first limit block 401 and a second limit block 402. The top of the first limit block 401 is fixedly connected to the bottom end of the connecting shaft 403, and the outer side of the connecting shaft 403 is slidably connected to the second limit block 402. The top of the first limit block 401 is fixedly connected to the bottom end of the compression spring 404, and the top of the compression spring 404 is fixedly connected to the bottom of the second limit block 402. The bottom of the first limit block 401 is fixedly connected to the first adjusting rod 405, and the outer side of the first adjusting rod 405 is fixedly connected to the third limit sleeve 406. A threaded groove is provided on the inner side of the first adjusting rod 405, and the first adjusting rod 405 is spirally connected to the second adjusting rod 407 through the threaded groove. A threaded protrusion is provided on the outer side of the second adjusting rod 407, and the bottom end of the second adjusting rod 407 is fixedly connected to the inspection head 408.

[0034] Furthermore, the dial indicator assembly 5 includes a wear-resistant sleeve 501 and a fixed rod 502. The inner side of the wear-resistant sleeve 501 is fixedly connected to the fixed rod 502. The inner side of the fixed rod 502 is slidably connected to the measuring rod 503. The top of the fixed rod 502 is fixedly connected to the meter body 504. The outer side of the meter body 504 is rotatably connected to the dial 505.

[0035] Workflow: Before use, first confirm the standard depth of the injector hole that needs to be inspected, and adjust the piston rod of the hydraulic rod 101 to extend upward through the controller 102. The scale shaft 104 is a transparent shaft, and the extended length of the piston rod of the hydraulic rod 101 can be observed through the scale of the scale shaft 104, so that the distance from the top of the scale shaft 104 to the top of the piston rod of the hydraulic rod 101 is equal to the standard depth of the injector hole. The first limit block 401 can slide up and down inside the first through groove 303, the second limit block 402 and the connecting shaft 403 can slide up and down inside the first bushing 201, and the third limit sleeve 406 can slide up and down inside the second through groove 304. The first limit block 401, the second limit block 402, the connecting shaft 403 and the third limit sleeve 4 06 cannot rotate in the horizontal direction, so the first adjusting rod 405 cannot rotate, the second adjusting rod 407 is spirally connected to the first adjusting rod 405, and the bottom end of the second adjusting rod 407 is fixedly connected to the inspection head 408. The staff holds the housing component 3 with one hand and rotates the inspection head 408 with the other hand to adjust the protruding length of the second adjusting rod 407. The second adjusting rod 407 is adjusted according to the standard depth of the injector hole, so that the protruding length of the second adjusting rod 407 relative to the bottom end of the second bushing 202 is slightly longer than the standard depth of the injector hole; then place the correction component 1 on a horizontal table, place the second bushing 202 on the inner side of the first limiting sleeve 105, so that the bottom surface of the second bushing 202 and the top surface of the correction tube 103 fit together, and at this time the inspection head 408 is pressed upward The second limiting block 402 slides down relative to the connecting shaft 403, and the compression spring 404 is compressed. Since the second limiting sleeve 203 clamps and fixes the wear-resistant sleeve 501 through the locking bolt 204, the dial indicator assembly 5 is fixed as a whole and cannot be moved, and the bottom end of the measuring rod 503 fits with the top end of the connecting shaft 403. At this time, the connecting shaft 403 can drive the measuring rod 503 to slide up, and the pointer inside the meter body 504 rotates immediately. The staff holds the outer shell assembly 3 with one hand and rotates the dial 505 with the other hand to make the zero scale line of the dial 505 consistent with the pointer of the meter body 504. , the dial indicator can be zeroed; then the injector to be inspected is placed on a horizontal table, the staff holds the housing assembly 3 in one hand, and inserts the inspection head 408 into the injector hole, the bottom end of the inspection head 408 fits with the bottom surface of the injector hole, because the length of the second adjustment rod 407 protruding relative to the bottom end of the second bushing 202 after adjustment is slightly longer than the standard depth of the injector hole, the inspection head 408 slides up under pressure, which can drive the measuring rod 503 to slide up, and the pointer inside the meter body 504 rotates immediately, and the error value of the injector hole relative to the standard depth of the injector hole can be observed through the dial 505. The device can adapt to the depth of different injector holes by adjusting the correction component 1 when inspecting the depth of injector holes of different models through the adjustable correction component 1;The device can be used to inspect the depth of different types of injector holes through the adjustable measuring rod assembly 4. If the depths of two different types of injector holes are greatly different, the measuring rod assembly 4 can be adjusted to adapt to injector holes with a larger depth range. The adjustable correction assembly 1 and the measuring rod assembly 4 can enable the device to adapt to different types of injector hole depth inspections, and the operation steps are relatively simple, while reducing the production cost. ;

[0036] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A fuel injector hole depth gauge, comprising a calibration component (1) and a connection component (2), characterized in that: The connection component (2) is fixedly connected to the housing component (3); a measuring rod component (4) is provided on the inner side of the housing component (3); and a dial indicator component (5) is provided on the upper side of the measuring rod component (4).

2. The injector hole depth gauge according to claim 1, characterized in that: The correction component (1) comprises a hydraulic rod (101) and a controller (102); the outer side of the hydraulic rod (101) is fixedly connected to the controller (102); the top of the hydraulic rod (101) is fixedly connected to a correction tube (103); a fixing groove is provided on the front side of the correction tube (103); the correction tube (103) is fixedly connected to a scale shaft (104) through the fixing groove; a scale is provided on the front side of the scale shaft (104); the upper part of the outer side of the correction tube (103) is fixedly connected to a first limiting sleeve (105); and a groove is provided on the front side of the first limiting sleeve (105).

3. The injector hole depth gauge according to claim 1, characterized in that: The connecting assembly (2) comprises a first bushing (201) and a second bushing (202), wherein the lower half of the first bushing (201) is fixedly connected to the inner top of the first shell (301), the inner side of the first bushing (201) is provided with a cylindrical slide groove, the first bushing (201) is slidably connected to the connecting shaft (403) through the cylindrical slide groove, the upper half of the second bushing (202) is fixedly connected to the inner bottom of the second shell (302), the inner side of the second bushing (202) is provided with a cylindrical slide groove, the diameter of the cylindrical slide groove of the second bushing (202) is the same as the maximum diameter of the outer thread of the second adjusting rod (407), the top of the first bushing (201) is fixedly connected to the second limiting sleeve (203), the left side of the second limiting sleeve (203) is spirally connected to the locking bolt (204), and the second limiting sleeve (203) is engaged with the wear-resistant sleeve (501) through the locking bolt (204).

4. The injector hole depth gauge according to claim 1, characterized in that: The housing assembly (3) comprises a first shell (301) and a second shell (302); the second shell (302) is welded to the bottom of the first shell (301); a first through groove (303) is provided on the inner side of the first shell (301); a second through groove (304) is provided on the inner side of the second shell (302); the first shell (301) is slidably connected to a first limit block (401) and a second limit block (402) via the first through groove (303); and the second shell (302) is slidably connected to a third limit sleeve (406) via the second through groove (304).

5. The injector hole depth gauge according to claim 1, characterized in that: The measuring rod assembly (4) comprises a first limit block (401) and a second limit block (402), wherein the top of the first limit block (401) is fixedly connected to the bottom end of the connecting shaft (403), and the outer side of the connecting shaft (403) is slidably connected to the second limit block (402), the top of the first limit block (401) is fixedly connected to the bottom end of a compression spring (404), and the top of the compression spring (404) is fixedly connected to the bottom of the second limit block (402), the bottom of the first limit block (401) is fixedly connected to a first adjusting rod (405), and the outer side of the first adjusting rod (405) is fixedly connected to a third limit sleeve (406), a thread groove is provided on the inner side of the first adjusting rod (405), and the first adjusting rod (405) is spirally connected to the second adjusting rod (407) through the thread groove, a thread protrusion is provided on the outer side of the second adjusting rod (407), and the bottom end of the second adjusting rod (407) is fixedly connected to an inspection head (408).

6. The injector hole depth gauge according to claim 1, characterized in that: The dial gauge assembly (5) comprises a wear-resistant sleeve (501) and a fixed rod (502); the inner side of the wear-resistant sleeve (501) is fixedly connected to the fixed rod (502); the inner side of the fixed rod (502) is slidably connected to a measuring rod (503); the top of the fixed rod (502) is fixedly connected to a meter body (504); and the outer side of the meter body (504) is rotatably connected to a dial (505).

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