Internal combustion engine follow-up arm lift measuring device
By designing a measuring device for the following arm lift of the internal combustion engine including a dial gauge, a transmission rod and a lifting mechanism, the problem of difficulty in accurately measuring the lift of the internal combustion engine in the prior art is solved, and the measurement effect of high accuracy and convenient operation is achieved.
Patent Information
- Application Number
- CN202420639370.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the prior art, it is difficult to accurately measure the calibration of the power set gas distribution phase during diesel engine maintenance of HXN3 diesel locomotives, especially within the crankshaft rotation range of 300° to 0°. The traditional method measurement tools cannot effectively deal with the specific distance between the follower arm and the electronic fuel injection pump hole, resulting in limited measurement accuracy and operational convenience.
A device for measuring lift of the internal combustion engine is designed, including a dial meter, a transmission rod, a base and a lifting mechanism. It extends into the cylinder and contacts the follower arm, and uses the lifting mechanism to adjust the height of the dial meter to make its measuring rod come into contact with the transmission rod, so as to achieve accurate measurement of the lift of the follower arm.
The device can directly measure the lift amount of the follower arm, solve the problem that existing tools cannot measure effectively, improve the accuracy of measurement and the convenience of operation, and is suitable for the lift amount of the follower arm of different internal combustion engines.
Smart Images
Figure CN222670903U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical engineering, in particular to a device for measuring the lift amount of a follower arm of an internal combustion engine. Background Art
[0002] In the prior art, the maintenance of the diesel engine of the HXN3 type diesel locomotive, especially during the overall installation of the power group, involves the calibration work of accurately measuring the valve timing of the power group. This calibration process requires measuring the specific position of the crankshaft during rotation, especially in the rotation range from 300° to 0°, to ensure the accurate alignment of the valve timing. The traditional method measures the lift of the follower arm by installing a dial indicator at the hole of the electronic injection pump and connecting it to the follower arm. The calibration standard is that the lift must be greater than 8.90mm, so as to adjust the gear position to ensure the correct installation of the power group and the accurate calibration of the valve timing.
[0003] Since the distance between the follower arm and the hole of the electronic fuel injection pump is about 20cm, it exceeds the design measurement range of the ordinary dial gauge. This distance limitation leads to the limitation of the application of existing measuring tools, which in turn affects the accuracy of measurement and the convenience of operation. More importantly, there is a lack of specially designed tools on the market to solve this specific measurement requirement. The existing general measuring tools cannot effectively cope with this special measurement environment, resulting in many inconveniences and challenges faced by maintenance personnel in actual operation.
[0004] This shortcoming of current technology not only affects the efficiency and quality of maintenance work, but also poses a potential threat to the operational safety of locomotives. Therefore, developing a dedicated measuring tool that can adapt to the specific distance between the follower arm and the electronic fuel injection pump hole while ensuring measurement accuracy and ease of operation has become a technical problem that needs to be solved in this field. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model provides a device for measuring the lift amount of a follower arm of an internal combustion engine, aiming to solve the problems raised by the above-mentioned background technology.
[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a device for measuring the lift amount of an internal combustion engine follower arm, including a dial indicator, a transmission rod, a base and a lifting mechanism arranged on the upper surface of the base, the dial indicator is connected to the lifting mechanism, and the lifting mechanism is used to drive the dial indicator to perform lifting and lowering movements; the transmission rod passes through the base and is slidably connected to the base, the axis of the transmission rod is colinear with the axis of the measuring rod of the dial indicator, and the dial indicator is located at the upper end of the transmission rod.
[0007] Preferably, a linear bearing is disposed on the upper surface of the base, and the transmission rod passes through the linear bearing and is slidably connected to the linear bearing.
[0008] Preferably, a positioning sleeve is provided on the lower surface of the base, and the axis of the positioning sleeve is colinear with the axis of the transmission rod.
[0009] Preferably, four installation cavities are provided on the base, and a piston is provided inside the installation cavity. The upper end of the piston is rotatably connected to a first screw rod, and the first screw rod passes through the upper wall of the installation cavity and is threadedly connected to the upper wall of the installation cavity. The upper end of the first screw rod is fixedly connected to a paddle, and the lower end of the installation cavity is open. Four rubber rings are provided on the lower surface of the base, and the four rubber rings correspond to the four installation cavities respectively.
[0010] Preferably, the lifting mechanism includes a vertical plate, a second screw and a first connecting plate, the vertical plate is fixedly connected to the upper surface of the base, the first connecting plate is slidably connected to the vertical plate, the end of the first connecting plate away from the vertical plate is fixedly connected to the dial indicator, a mounting portion extends from the upper end of the vertical plate, the mounting portion is perpendicular to the vertical plate, the second screw passes through the mounting portion and is rotatably connected to the mounting portion, the second screw passes through the first connecting plate and is threadedly connected to the first connecting plate, and the lower end of the second screw is rotatably connected to the upper surface of the base.
[0011] Preferably, the lifting mechanism further comprises a guide rail and a slider, the guide rail is fixedly connected to the vertical plate, the slider is slidably connected to the guide rail, and the first connecting plate is fixedly connected to the slider.
[0012] Preferably, the lifting mechanism also includes a second connecting plate, a threaded sleeve and a guide sleeve; the second connecting plate is fixedly connected to the slider, the end of the second connecting plate away from the slider is connected to the guide sleeve, a strip groove is provided on the side of the guide sleeve away from the second connecting plate, the threaded sleeve passes through the first connecting plate and the second connecting plate, and the second screw passes through the threaded sleeve and is threadedly connected to the threaded sleeve.
[0013] Preferably, the lifting mechanism further comprises a rocker arm and a rocker rod rotatably mounted on the rocker arm, and the rocker arm is fixedly connected to the upper end of the second screw rod.
[0014] Preferably, reinforcing ribs are fixedly connected between the vertical plate and the base.
[0015] Preferably, a counterweight block is disposed on the upper surface of the base, and the counterweight block is disposed on a side of the vertical plate away from the transmission rod.
[0016] Beneficial Effects
[0017] The utility model provides a device for measuring the lift amount of a follower arm of an internal combustion engine. The utility model allows a transmission rod to extend into a cylinder body until the lower end of the transmission rod contacts the end of the follower arm away from the crankshaft. Then the height of the dial gauge is adjusted so that the lower end of the measuring rod of the dial gauge contacts the upper end of the transmission rod, and the value of the dial gauge is observed and the value of the dial gauge is adjusted to zero. Then the crankshaft is driven, and the rotation of the crankshaft drives the end of the follower arm away from the crankshaft to perform lifting and lowering movements in the cylinder body, and the end of the follower arm away from the crankshaft drives the transmission rod to perform lifting and lowering movements, and the upper end of the transmission rod drives the measuring rod of the dial gauge to perform telescopic movements, and the value of the dial gauge changes. By observing the value of the dial gauge, the lifting and lowering stroke of the end of the follower arm away from the crankshaft, that is, the lift amount of the follower arm, can be obtained.
[0018] By using the design of a dial indicator and a transmission rod colinear therewith, the device can directly measure the lifting movement of the follower arm away from one end of the crankshaft, thereby accurately calculating the lift amount of the follower arm, thus solving the problem of lack of special tools for measuring the lift amount of the follower arm.
[0019] In addition, the distance between the follower arm and the electronic fuel injection pump hole of different internal combustion engines is different. The above method can be used to adjust the height of the dial indicator to ensure that the lower end of the transmission rod is in contact with the follower arm and the upper end is in contact with the dial indicator, thereby measuring the lift of the follower arm of different internal combustion engines, which has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The utility model is a three-dimensional structural schematic diagram of a device for measuring the lift amount of a follower arm of an internal combustion engine.
[0021] Figure 2 The utility model is a schematic diagram of the main structure of a device for measuring the lift amount of a follower arm of an internal combustion engine.
[0022] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a base of a device for measuring the lift amount of a follower arm of an internal combustion engine.
[0023] Figure 4 The utility model is a schematic diagram of the three-dimensional structure of a piston, a first screw rod and a paddle of a device for measuring the lift amount of a follower arm of an internal combustion engine.
[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of a slider of a device for measuring the lift amount of a follower arm of an internal combustion engine described in the utility model.
[0025] Figure 6 for Figure 2 An enlarged schematic diagram of point A.
[0026] In the figure: 1- dial indicator, 2- base, 21- linear bearing, 22- positioning sleeve, 23- mounting chamber, 24- piston, 25- first screw, 26- paddle, 27- rubber ring, 3- lifting mechanism, 31- vertical plate, 311- mounting part, 312- reinforcing rib, 32- second screw, 33- first connecting plate, 34- guide rail, 35- slider, 36- second connecting plate, 37- threaded sleeve, 38- guide sleeve, 39- rocker arm, 391- rocker, 4- transmission rod. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1-6 The utility model provides a device for measuring the lift amount of an internal combustion engine follower arm, comprising a dial indicator 1, a transmission rod 4, a base 2 and a lifting mechanism 3 arranged on the upper surface of the base 2, the dial indicator 1 is connected to the lifting mechanism 3, and the lifting mechanism 3 is used to drive the dial indicator 1 to perform lifting movement; the transmission rod 4 passes through the base 2 and is slidably connected to the base 2, the axis of the transmission rod 4 is colinear with the axis of the measuring rod 11 of the dial indicator 1, and the dial indicator 1 is located at the upper end of the transmission rod 4.
[0029] In actual operation, the fuel injection pump of the diesel engine is disassembled, and the base 2 is set at the installation hole of the fuel injection pump of the diesel engine, and the transmission rod 4 is extended into the cylinder body until the lower end of the transmission rod 4 contacts the end of the follower arm away from the crankshaft. Then adjust the height of the dial gauge 1 so that the lower end of the measuring rod 11 of the dial gauge 1 contacts the upper end of the transmission rod 4, and observe the value of the dial gauge 1, adjust the value of the dial gauge 1 to zero, and then drive the crankshaft shaft. The rotation of the crankshaft drives the end of the follower arm away from the crankshaft to perform lifting and lowering movements in the cylinder body, and the end of the follower arm away from the crankshaft drives the transmission rod 4 to perform lifting and lowering movements, and the upper end of the transmission rod 4 drives the measuring rod 11 of the dial gauge 1 to perform telescopic movements, and the value of the dial gauge 1 changes. By observing the value of the dial gauge 1, the lifting and lowering stroke of the end of the follower arm away from the crankshaft, that is, the lift amount of the follower arm, can be obtained. By using the design of the dial gauge 1 and the transmission rod 4 colinear therewith, the device can directly measure the lifting movement of the follower arm away from one end of the crankshaft, thereby accurately calculating the lift amount of the follower arm. In addition, the distance between the follower arm and the electronic fuel injection pump hole of different internal combustion engines is different. The height of the dial gauge 1 can be adjusted by the above method to ensure that the lower end of the transmission rod 4 contacts the follower arm and the upper end contacts the dial gauge 1, thereby measuring the lift amount of the follower arm of different internal combustion engines, and the device has strong applicability.
[0030] Specifically, a linear bearing 21 is provided on the upper surface of the base 2, and the transmission rod 4 passes through the linear bearing 21 and is slidably connected to the linear bearing 21. The setting of the linear bearing 21 can effectively improve the smoothness of the sliding of the transmission rod 4, ensure the movement accuracy and stability of the transmission rod 4 in the vertical direction, and thus directly affect the accuracy of the measurement result.
[0031] Specifically, a positioning sleeve 22 is provided on the lower surface of the base 2, and the axis of the positioning sleeve 22 is colinear with the axis of the transmission rod 4. When in use, the positioning sleeve 22 extends into the interior of the cylinder body to position and limit the base 2. The positioning sleeve 22 is made of rubber.
[0032] Specifically, the base 2 is provided with four mounting cavities 23, and a piston 24 is arranged inside the mounting cavity 23. The upper end of the piston 24 is rotatably connected with a first screw 25, and the first screw 25 passes through the upper wall of the mounting cavity 23 and is threadedly connected with the upper wall of the mounting cavity 23. The upper end of the first screw 25 is fixedly connected with a paddle 26. The lower end of the mounting cavity 23 is open, and four rubber rings 27 are arranged on the lower surface of the base 2, and the four rubber rings 27 correspond to the four mounting cavities 23 respectively. When in use, the base 2 is placed at the mounting hole of the diesel fuel injection pump, and the mounting cavity 23 is in contact with the plane of the oil extraction machine cylinder body, and then the first screw 25 is rotated, and the first screw 25 drives the piston 24 to move, so that the piston 24 moves upward, and the lower side of the piston 24 has negative pressure, and then the external pressure of the base 2 fixes the base 2 at the mounting hole of the diesel fuel injection pump, so that the base 2 is in a stable state. The setting of the rubber ring 27 is used to ensure the sealing performance between the lower side of the installation cavity 23 and the injection pump hole, and improve the fixing effect. When the fixing seat 2 needs to be removed, the first screw rod 25 is rotated again to move the piston 24 downward, and the base 2 can be removed.
[0033] Specifically, the lifting mechanism 3 includes a vertical plate 31, a second screw 32 and a first connecting plate 33. The vertical plate 31 is fixedly connected to the upper surface of the base 2, the first connecting plate 33 is slidably connected to the vertical plate 31, and the end of the first connecting plate 33 away from the vertical plate 31 is fixedly connected to the dial indicator 1. A mounting portion 311 extends from the upper end of the vertical plate 31, and the mounting portion 311 is perpendicular to the vertical plate 31. The second screw 32 passes through the mounting portion 311 and is rotatably connected to the mounting portion 311. The second screw 32 passes through the first connecting plate 33 and is threadedly connected to the first connecting plate 33. The lower end of the second screw 32 is rotatably connected to the upper surface of the base 2.
[0034] The second screw 32 is rotated to drive the first connecting plate 33 to move up and down, and the first connecting plate 33 drives the dial indicator 1 to move up and down. The sliding connection between the first connecting plate 33 and the vertical plate 31 is used to guide the movement of the first connecting plate 33.
[0035] Specifically, the lifting mechanism 3 further includes a guide rail 34 and a slider 35. The guide rail 34 is fixedly connected to the vertical plate 31, the slider 35 is slidably connected to the guide rail 34, and the first connecting plate 33 is fixedly connected to the slider 35. The setting of the guide rail 34 and the slider 35 is used to improve the smoothness of the lifting movement of the first connecting plate 33, and the guide rail 34 is used to guide the movement of the first connecting plate 33.
[0036] Specifically, the lifting mechanism 3 further includes a second connecting plate 36, a threaded sleeve 37 and a guide sleeve 38; the second connecting plate 36 is fixedly connected to the slider 35, and one end of the second connecting plate 36 away from the slider 35 is connected to the guide sleeve 38, and a strip groove 381 is provided on the side of the guide sleeve 38 away from the second connecting plate 36, and the threaded sleeve 37 passes through the first connecting plate 33 and the second connecting plate 36, and the second screw rod 32 passes through the threaded sleeve 37 and is threadedly connected to the threaded sleeve 37. The second connecting plate 36, the slider 35 and the first connecting plate 33 are in an integrated structure. The threaded sleeve 37 is driven by the second screw rod 32 to perform lifting and lowering movements, and the threaded sleeve 37 drives the second connecting plate 36, the slider 35 and the first connecting plate 33 to perform lifting and lowering movements. When the measuring rod 11 of the dial gauge 1 is adjusted to contact the transmission rod 4, the upper end of the transmission rod 4 is located in the guide sleeve 38, and the guide sleeve 38 further guides the up and down movement of the transmission rod 4. The setting of the strip groove 381 makes it easy to observe whether the upper end of the transmission rod 4 is in contact with the measuring rod of the dial gauge 1, so as to adjust the height of the dial gauge 1.
[0037] Specifically, the lifting mechanism 3 further includes a rocker arm 39 and a rocker rod 391 rotatably mounted on the rocker arm 39, and the rocker arm 39 is fixedly connected to the upper end of the second screw rod 32. The rocker rod 391 is rotated, and the rocker arm 391 drives the rocker arm 39 to rotate, and the rocker arm 39 drives the second screw rod 32 to rotate. The setting of the rocker arm 39 and the rocker rod 391 facilitates driving the second screw rod 32.
[0038] Specifically, a reinforcing rib 312 is fixedly connected between the vertical plate 31 and the base 2 . The reinforcing rib 312 is provided to improve the stability of the vertical plate 31 .
[0039] Specifically, a counterweight block 28 is provided on the upper surface of the base 2, and the counterweight block 28 is provided on the side of the vertical plate 31 away from the transmission rod 4. Since the transmission rod 4 has a certain weight and needs to be inserted into the cylinder body when in use, the counterweight block 28 is provided to balance the force of the base 2 and ensure the stability of the base 2.
[0040] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.
Claims
1. A device for measuring the lift of a follower arm of an internal combustion engine, comprising a dial indicator (1), characterized in that: It also comprises a transmission rod (4), a base (2) and a lifting mechanism (3) arranged on the upper surface of the base (2), the dial indicator (1) being connected to the lifting mechanism (3), and the lifting mechanism (3) being used to drive the dial indicator (1) to perform lifting movement; the transmission rod (4) passes through the base (2) and is slidably connected to the base (2), the axis of the transmission rod (4) is colinear with the axis of the measuring rod (11) of the dial indicator (1), and the dial indicator (1) is located at the upper end of the transmission rod (4).
2. The internal combustion engine follower arm lift measurement device according to claim 1, characterized in that: A linear bearing (21) is provided on the upper surface of the base (2), and the transmission rod (4) passes through the linear bearing (21) and is slidably connected to the linear bearing (21).
3. The internal combustion engine follower arm lift measurement device according to claim 2, characterized in that: A positioning sleeve (22) is provided on the lower surface of the base (2), and the axis of the positioning sleeve (22) is colinear with the axis of the transmission rod (4).
4. The internal combustion engine follower arm lift measurement device according to claim 1, characterized in that: The base (2) is provided with four installation cavities (23), the interior of the installation cavity (23) is provided with a piston (24), the upper end of the piston (24) is rotatably connected to a first screw rod (25), the first screw rod (25) passes through the upper wall of the installation cavity (23) and is threadedly connected to the upper wall of the installation cavity (23), the upper end of the first screw rod (25) is fixedly connected to a paddle (26), the lower end of the installation cavity (23) is open, and the lower surface of the base (2) is provided with four rubber rings (27), and the four rubber rings (27) correspond to the four installation cavities (23) respectively.
5. The internal combustion engine follower arm lift measurement device according to claim 1, characterized in that: The lifting mechanism (3) comprises a vertical plate (31), a second screw rod (32) and a first connecting plate (33), wherein the vertical plate (31) is fixedly connected to the upper surface of the base (2), the first connecting plate (33) is slidably connected to the vertical plate (31), an end of the first connecting plate (33) away from the vertical plate (31) is fixedly connected to the dial indicator (1), a mounting portion (311) extends from the upper end of the vertical plate (31), the mounting portion (311) is perpendicular to the vertical plate (31), the second screw rod (32) passes through the mounting portion (311) and is rotatably connected to the mounting portion (311), the second screw rod (32) passes through the first connecting plate (33) and is threadedly connected to the first connecting plate (33), and the lower end of the second screw rod (32) is rotatably connected to the upper surface of the base (2).
6. The internal combustion engine follower arm lift measurement device according to claim 5, characterized in that: The lifting mechanism (3) further comprises a guide rail (34) and a slider (35); the guide rail (34) is fixedly connected to the vertical plate (31); the slider (35) is slidably connected to the guide rail (34); and the first connecting plate (33) is fixedly connected to the slider (35).
7. The internal combustion engine follower arm lift measurement device according to claim 6, characterized in that: The lifting mechanism (3) further comprises a second connecting plate (36), a threaded sleeve (37) and a guide sleeve (38); the second connecting plate (36) is fixedly connected to the slider (35); an end of the second connecting plate (36) away from the slider (35) is connected to the guide sleeve (38); a strip groove (381) is formed on a side of the guide sleeve (38) away from the second connecting plate (36); the threaded sleeve (37) passes through the first connecting plate (33) and the second connecting plate (36); and the second screw rod (32) passes through the threaded sleeve (37) and is threadedly connected to the threaded sleeve (37).
8. The internal combustion engine follower arm lift measurement device according to claim 5, characterized in that: The lifting mechanism (3) further comprises a rocker arm (39) and a rocker rod (391) rotatably mounted on the rocker arm (39); the rocker arm (39) is fixedly connected to the upper end of the second screw rod (32).
9. The internal combustion engine follower arm lift measurement device according to claim 5, characterized in that: A reinforcing rib (312) is fixedly connected between the vertical plate (31) and the base (2).
10. The internal combustion engine follower arm lift measurement device according to claim 5, characterized in that: A counterweight block (28) is provided on the upper surface of the base (2), and the counterweight block (28) is arranged on a side of the vertical plate (31) away from the transmission rod (4).