Installation adjustment device and installation adjustment method

Abstract

The present invention provides an installation adjustment device and an installation adjustment method. The installation adjustment method uses the installation adjustment device to measure and adjust the installation position of the gearbox. The installation adjustment device is used for the assembly of the engine. The engine includes a gearbox, a body, and a crankshaft. The gearbox includes gearbox bearing holes. The body includes a plurality of mounting holes with equal height and higher than the upper plane of the gearbox. The crankshaft includes a first end. The gearbox bearing holes, the mounting holes, and the first end are located on the same side of the body. A center hole is provided on the end face of the first end. In the installation adjustment device: The axis detection tool is installed in the center hole and includes at least one first measuring gauge for measuring the coaxiality position deviation between the gearbox bearing holes and the center line of the crankshaft. The horizontal detection tool is connected to at least two mounting holes and includes at least two second measuring gauges for measuring the relative horizontal position deviation between the upper plane and the body. The adjustment frame is connected to the gearbox and is used to adjust the height of at least one side of the gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of engine assembly, and particularly relates to an installation adjustment device and an installation adjustment method. Background Art

[0002] The gearbox of a diesel engine is an important part of the diesel engine, and the main transmission parts of the diesel engine are all installed in the gearbox. The coaxiality between the bearing holes of the gearbox and the main bearing holes of the diesel engine body directly affects the installation accuracy of each transmission component of the diesel engine. Therefore, generally, the gearbox and the engine body adopt a combined machining method for the bearing holes to ensure the coaxiality of the bearing holes of the two components, and a positioning pin is made to ensure the repeat positioning accuracy of the two components. However, this machining method first requires the combined machining of the two components, which will affect their respective machining cycles. Secondly, for the components subjected to combined machining, their interchangeability is relatively poor. Once one of the components needs to be replaced due to damage or other reasons, it will be helpless or only the very costly method of replacing both components at the same time can be adopted. Summary of the Invention

[0003] An object of the present invention is to provide an installation adjustment device that can quickly and conveniently assemble the gearbox and ensure its installation accuracy without combined machining and without making positioning pins.

[0004] The installation adjustment device for achieving the above object is used for the assembly of an engine. The engine includes a gearbox, an engine body, and a crankshaft. The gearbox includes gearbox bearing holes, the engine body includes a plurality of mounting holes with equal heights, the mounting holes are higher than the upper plane of the gearbox, the crankshaft includes a first end, the gearbox bearing holes, the mounting holes, and the first end are located on the same side of the engine body, and a center hole is provided on the end face of the first end; the installation adjustment device includes an axis detection tool, a horizontal detection tool, and an adjustment frame; the axis detection tool is installed in the center hole and includes at least one first measuring gauge, and the first measuring gauge is used for measuring the coaxiality position deviation between the gearbox bearing holes and the center line of the crankshaft; the horizontal detection tool is connected to at least two of the mounting holes and includes at least two second measuring gauges, and the second measuring gauges are used for measuring the relative horizontal position deviation between the upper plane and the engine body; the adjustment frame is connected to the gearbox and is used for adjusting the height of at least one side of the gearbox; wherein, the first measuring gauge and the second measuring gauge are respectively a dial indicator, a micrometer or a lever gauge.

[0005] In one or more embodiments of the installation adjustment device, the axis detection tool includes a positioning part and one first measuring gauge, the positioning part is installed in the center hole, and the first measuring gauge can rotate around the axis of the positioning part.

[0006] In one or more embodiments of the described installation and adjustment device, the central hole includes a light hole section and a threaded hole section. The positioning portion includes a positioning shaft and a positioning threaded member. The positioning shaft is for installation in the light hole section, the positioning threaded member is for threaded cooperation with the threaded hole section, the positioning shaft is rotatably connected to the positioning threaded member, and the first measuring instrument is fixedly connected to the positioning shaft.

[0007] In one or more embodiments of the described installation and adjustment device, the axis detection tool further includes a first thrust bearing. There is a stepped surface between the light hole section and the threaded hole section, and the first thrust bearing is installed between the stepped surface and the positioning shaft.

[0008] In one or more embodiments of the described installation and adjustment device, the axis detection tool further includes a second thrust bearing. The positioning threaded member includes a head and a rod portion. The rod portion includes a smooth rod section and a threaded rod section. The positioning shaft is sleeved on the radial outer side of the smooth rod section, and the second thrust bearing is installed between the head and the positioning shaft.

[0009] In one or more embodiments of the described installation and adjustment device, the axis detection tool further includes a measuring instrument bracket. The measuring instrument bracket includes a plurality of measuring instrument mounting holes for mounting the first measuring instrument, and the distances from the plurality of measuring instrument mounting holes to the axis of the positioning portion are not equal.

[0010] In one or more embodiments of the described installation and adjustment device, the horizontal detection tool includes a mounting frame. The mounting frame is in a door frame shape structure, including a cross beam and two longitudinal beams. The two ends of the cross beam are respectively connected to the tops of the two longitudinal beams. The cross beam is for connection with at least two of the mounting holes, and two second measuring instruments are respectively installed at the bottoms of the two longitudinal beams.

[0011] In one or more embodiments of the described installation and adjustment device, the adjustment frame includes a connection end, a support end, and an adjustment portion. The connection end is for connection with the gearbox, the support end is for supporting on the machine body or the ground or a component fixedly connected to the machine body, and the adjustment portion is for adjusting the relative distance between the connection end and the support end.

[0012] This installation and adjustment device converts the coaxiality requirement between the gearbox bearing hole and the engine body bearing hole into the coaxiality requirement between the gearbox bearing hole and the center line of the crankshaft. It uses an axis detection tool to measure the coaxiality position deviation between the gearbox bearing hole and the center line of the crankshaft, a horizontal detection tool to measure the relative horizontal position deviation between the upper plane of the gearbox and the engine body, and an adjustment bracket to adjust the relative position between the upper plane of the gearbox and the engine body. This can ensure the installation position accuracy of the gearbox without combined machining with the engine body and fitting of positioning pins, save the machining cycle of the gearbox and the engine body, and enable the interchangeability of the gearbox. The structure of this installation and adjustment device is simple, the design is reasonable, it is easy to be machined, manufactured and assembled, and the operation is convenient and reliable. It is applicable not only to the assembly of diesel engines but also to the assembly of gasoline engines.

[0013] Another object of the present invention is to provide an installation and adjustment method that can quickly and conveniently assemble the gearbox and ensure its installation accuracy without combined machining and without fitting positioning pins.

[0014] For the installation and adjustment method to achieve the above object, the aforesaid installation and adjustment device is used to measure and adjust the installation position of the gearbox, including the following steps: Assemble the gearbox and the engine body and connect them with fasteners, and the fasteners are in an untightened state; Zero each of the second measuring gauges on the inspection platform, connect the horizontal detection tool to the installation hole of the engine body, and install the axis detection tool in the center hole of the crankshaft; Measure the position deviation at different positions of the gearbox bearing hole through the axis detection tool. If the measured value of the first measuring gauge meets the coaxiality adjustment requirement of the gearbox and the readings of each of the second measuring gauges are consistent, then the installation accuracy of the gearbox meets the requirement; otherwise, adjust and re-measure the installation position of the gearbox until the installation accuracy of the gearbox meets the requirement.

[0015] In one or more embodiments of the aforesaid installation and adjustment method, the method for adjusting the installation position of the gearbox includes: Adjust the height of at least one side of the gearbox through the adjustment bracket so that the measured values of the first measuring gauge at the upper and lower positions of the gearbox bearing hole meet the coaxiality adjustment requirement of the gearbox and the readings of each of the second measuring gauges are consistent; Adjust the position of the gearbox in the left-right direction so that the measured values of the first measuring gauge at the left and right positions of the gearbox bearing hole meet the coaxiality adjustment requirement of the gearbox.

[0016] The installation and adjustment method converts the coaxiality requirements of the gearbox bearing hole and the bearing hole of the engine body into the coaxiality requirements of the gearbox bearing hole and the center line of the crankshaft, uses an axis detection tool to measure the coaxial position deviation of the gearbox bearing hole and the center line of the crankshaft, uses a horizontal detection tool to measure the relative horizontal position deviation between the upper plane of the gearbox and the engine body, and uses an adjustment frame to adjust the relative position of the upper plane of the gearbox and the engine body, so as to ensure the installation position accuracy of the gearbox without being combined with the engine body and equipped with a locating pin, save the processing cycle of the gearbox and the engine body, and realize the interchangeability of the gearbox. The installation and adjustment method is reasonably designed, convenient and reliable to operate, and is not only suitable for the assembly of diesel engines, but also for the assembly of gasoline engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments. It should be noted that the drawings are only for illustration and are not drawn in accordance with the conditions of equal proportions, and should not be used to limit the actual scope of protection required by the present invention. In addition, components with similar related properties or characteristics may have the same or similar reference numerals.

[0018] Figure 1 A schematic diagram showing the installation and adjustment device in use.

[0019] Figure 2 A schematic diagram of installing the adjustment device is shown.

[0020] Figure 3 A schematic diagram of an axis detection tool is shown.

[0021] Figure 4 A schematic diagram of a level detection tool is shown.

[0022] Figure 5 A schematic diagram of the adjustment mount is shown.

[0023] Figure 6 A schematic diagram showing the relative horizontal requirements of the gearbox and the machine body.

[0024] Figure 7 and Figure 8 Schematic diagram showing the coaxiality adjustment requirements of the gearbox. DETAILED DESCRIPTION

[0025] The following discloses a variety of different implementation methods or embodiments of the subject technical solution. To simplify the disclosure, specific examples of each element and arrangement are described below. Of course, these are only examples and are not intended to limit the scope of protection of the present invention. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0026] Referring to Figures 1 to 8 Figures 1 to 8 , the installation and adjustment device 1 according to an embodiment of the present invention is used for the assembly of the engine 2. The engine 2 includes a gearbox 21, a body 22, and a crankshaft 23. The gearbox 21 includes a gearbox bearing hole 211 and an upper plane 212. The body 22 includes a body bearing hole 221 and a plurality of mounting holes 222 for mounting parts. The heights of the plurality of mounting holes 222 are equal and higher than the upper plane 212 of the gearbox 21. The first end 231 of the crankshaft 23 is located in the gearbox bearing hole 211, and the journal 232 of the crankshaft 23 is located in the body bearing hole 221. The gearbox bearing hole 211, the mounting holes 222, and the first end 231 are all located on the same side of the body 22.

[0027] In the description of the present invention, the orientation or positional relationship indicated by orientation words such as "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings.

[0028] After analysis, there are two main factors affecting the installation accuracy of the gearbox 21: one is the coaxiality requirement between the gearbox bearing hole 211 and the body bearing hole 221, and the other is the relative horizontal requirement between the gearbox 21 and the body 22. In order to install the gearbox 21 and ensure its installation accuracy without combined machining of the gearbox 21 and the body 22 and without making positioning pins, the inventor analyzed the design forms of the gearbox 21, the body 22, and the crankshaft 23, and combined with the actual installation process, converted the coaxiality requirement between the gearbox bearing hole 211 and the body bearing hole 221 into the coaxiality requirement between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23, and designed the installation and adjustment device 1 to measure and adjust the coaxiality requirement between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23 and the relative horizontal requirement between the gearbox 21 and the body 22.

[0029] The installation and adjustment device 1 includes an axis detection tool 11, a horizontal detection tool 12, and an adjustment bracket 13. The axis detection tool 11 is used to measure the coaxiality position deviation between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23. The horizontal detection tool 12 is used to measure the relative horizontal position deviation between the upper plane 212 of the gearbox 21 and the body 22. The adjustment bracket 13 is used to adjust the height of at least one side of the gearbox 21 to adjust the height of the gearbox bearing hole 211 or / and the relative horizontal positional relationship between the upper plane 212 and the body 22.

[0030] The axis detection tool 11 includes a positioning portion 111 and a first measuring instrument 112. The positioning portion 111 is installed in the central hole 233 of the end face of the first end 231 of the crankshaft 23, and the first measuring instrument 112 can rotate around the axis 110 of the positioning portion 111 to measure the position deviation at different positions of the gearbox bearing hole 211.

[0031] In another embodiment not shown in the figure, the axis detection tool 11 includes a plurality of first gauges 112 arranged along the circumferential direction, and the plurality of first gauges 112 respectively measure the position deviations at different positions of the gear box bearing hole 211 .

[0032] Continue to refer to Figures 1 to 8 The first scale 112 is a lever scale. The first scale 112 is nearly parallel to the axis 110 of the positioning portion 111 or is at a small angle, for example, not greater than 10°. The measuring rod 1121 of the first scale 112 is in contact with the inner surface of the gear box bearing hole 211. The dial 1122 of the first scale 112 is located outside the gear box bearing hole 211, so that it can be used in situations where the aperture of the gear box bearing hole 211 is small.

[0033] In other embodiments, the first scale 112 is a dial indicator or a micrometer. Optionally, the axis detection tool 11 also includes a conversion device (not shown), the conversion device includes a transmission device and a measuring head, one end of the measuring head contacts the inner surface of the gear box bearing hole 211, and the other end is connected to the measuring rod 1121 of the first scale 112 through the transmission device. The measuring head of the conversion device is in a different direction from the measuring rod 1121 of the first scale 112, so that the measuring angle can be converted.

[0034] Continue to refer to Figures 1 to 8 The center hole 233 includes a light hole section 2331 and a screw hole section 2332. The light hole section 2331 is located on one side of the end surface close to the first end 231 relative to the screw hole section 2332. The diameter of the light hole section 2331 is larger than the major diameter of the screw hole section 2332. There is a step surface 2333 between the light hole section 2331 and the screw hole section 2332. The positioning portion 111 includes a positioning shaft 113 and a positioning screw member 114. The positioning shaft 113 is rotatably connected to the positioning screw member 114. The first gauge 112 is fixedly connected to the positioning shaft 113. The positioning screw member 114 is used to threadably cooperate with the screw hole section 2332 to fix the axis detection tool 11 to the first end 231 of the crankshaft 23. The positioning shaft 113 is used to be installed in the light hole section 2331. The positioning shaft 113 and the light hole section 2331 are matched with a small gap to make the positioning shaft 113 easy to rotate. At the same time, it is ensured that the positioning shaft 113 and the light hole section 2331 have a high coaxiality to improve the measurement accuracy of the axis detection tool 11.

[0035] Optionally, the positioning threaded member 114 is a bolt or is made by machining a bolt, including a head 1141 and a rod portion 1142. The rod portion 1142 includes a smooth rod section 1143 and a screw rod section 1144. The positioning shaft 113 is sleeved on the radial outer side of the smooth rod section 1143. The inner hole of the positioning shaft 113 is in small clearance fit with the smooth rod section 1143, so that the positioning shaft 113 is easy to rotate, and at the same time, it is ensured that the positioning shaft 113 and the smooth rod section 1143 have high coaxiality, so as to improve the measurement accuracy of the shaft center detection tool 11.

[0036] Optionally, the shaft center detection tool 11 further includes a first thrust bearing 115. The first thrust bearing 115 is installed between the step surface 2333 and the positioning shaft 113. The two axial ends of the first thrust bearing 115 are respectively abutted against the step surface 2333 and the end surface of the positioning shaft 113 on the side close to the step surface 2333, so that the rotation of the positioning shaft 113 and the first measuring gauge 112 can be more stable, so as to improve the measurement accuracy of the shaft center detection tool 11.

[0037] Optionally, the shaft center detection tool 11 further includes a second thrust bearing 116. The second thrust bearing 116 is installed between the head 1141 and the positioning shaft 113. The two axial ends of the second thrust bearing 116 are respectively abutted against the head 1141 and the end surface of the positioning shaft 113 on the side far from the step surface 2333, so that the rotation of the positioning shaft 113 and the first measuring gauge 112 can be more stable, so as to improve the measurement accuracy of the shaft center detection tool 11.

[0038] Optionally, the shaft center detection tool 11 further includes a gauge bracket 117. The gauge bracket 117 includes a plurality of gauge mounting holes 1171 for mounting the first measuring gauge 112. The distances from the plurality of gauge mounting holes 1171 to the axis 110 of the positioning portion 111 are not equal, so that the mounting position of the first measuring gauge 112 can be adjusted to be applicable to gearbox bearing holes 211 with different apertures, and the versatility of the shaft center detection tool 11 and the mounting and adjustment device 1 is improved.

[0039] Optionally, the gauge bracket 117 further includes a plurality of mounting arms 1172 extending radially along the positioning axis 113. The plurality of mounting arms 1172 are circumferentially spaced along the positioning axis 113. For example, two mounting arms 1172 are spaced 180° from each other, or three mounting arms 1172 are spaced 120° from each other, or four mounting arms 1172 are spaced 90° from each other. Each mounting arm 1172 is provided with one of the aforementioned gauge mounting holes 1171 and a threaded hole 1173 vertically communicating with the gauge mounting hole 1171. During use, the first gauge 112 is installed in one of the gauge mounting holes 1171 according to the aperture of the bearing hole 211 of the gearbox to be measured, and the first gauge 112 is tightened by a locking screw 1174 passing through the threaded hole 1173, thereby simplifying the structure of the gauge bracket 117 for easy processing and manufacturing and facilitating the installation of the first gauge 112.

[0040] The horizontal detection tool 12 includes a mounting frame 121 and at least two second gauges 122. The mounting frame 121 is used to connect to at least two mounting holes 222 of the machine body 22 to position the horizontal reference of the machine body 22 through the mounting holes 222, realizing the fixation and positioning of the horizontal detection tool 12. The second gauges 122 are dial indicators or micrometers or lever gauges. The mounting heights of the second gauges 122 are the same. Before measurement, the second gauges 122 are zeroed on a detection platform (not shown). During measurement, the probe heads 1221 of the second gauges 122 contact different positions of the upper plane 212 of the gearbox 21 to measure the relative horizontal position deviation between the upper plane 212 of the gearbox 21 and the machine body 22. When the readings of the second gauges 122 are the same, the upper plane 212 of the gearbox 21 and the machine body 22 meet the relative horizontal requirement.

[0041] Optionally, the mounting frame 121 is in a door frame shape, including a cross beam 123 and two longitudinal beams 124. The two ends of the cross beam 123 in the length direction are respectively connected to the tops of the two longitudinal beams 124. The cross beam 123 is connected to the mounting hole 222 through a connecting bolt 125. The two second gauges 122 are respectively installed at the bottoms of the two longitudinal beams 124, thereby simplifying the structure of the horizontal detection tool 12 for easy processing and manufacturing and ensuring the installation accuracy of the horizontal detection tool 12, and further improving the measurement accuracy of the horizontal detection tool 12.

[0042] Furthermore, the mounting frame 121 is a symmetric structure. The two longitudinal beams 124 are symmetric with respect to the longitudinal center line 126 of the mounting frame 121, and the two second gauges 122 are symmetric with respect to the longitudinal center line 126 of the mounting frame 121 to further simplify the structure of the horizontal detection tool 12 for easy processing and manufacturing and ensuring the installation accuracy of the horizontal detection tool 12.

[0043] The adjusting frame 13 includes a connecting end 131, a supporting end 132, and an adjusting portion 133. The connecting end 131 is used to connect to the gearbox 21, for example, by bolts (not shown) to connect to existing holes (not shown) on the gearbox 21. The supporting end 132 is used to support on the machine body 22 or the ground or components fixedly connected to the machine body 22. The adjusting portion 133 is used to adjust the relative distance between the connecting end 131 and the supporting end 132, that is, to adjust the length of the adjusting frame 13, so as to adjust the height of the part of the gearbox 21 connected to the adjusting frame 13, and further adjust the height of the gearbox bearing hole 211 to meet the coaxiality requirement, or / and adjust the relative horizontal position relationship between the upper plane 212 of the gearbox 21 and the machine body 22, to ensure the correct corresponding relationship between the interfaces of the installation components of the gearbox 21 and the interfaces of the corresponding components.

[0044] Optionally, the adjusting frame 13 includes a rod portion 134 and an adjusting bolt 135. One end of the rod portion 134 is connected to the connecting end 131, the other end of the rod portion 134 is threadedly connected to the adjusting bolt 135, and the head of the adjusting bolt 135 provides the supporting end 132. By screwing the adjusting bolt 135, the length of the adjusting frame 13 can be adjusted, thereby simplifying the structure of the adjusting frame 13 for easy processing, manufacturing, and assembly adjustment.

[0045] Optionally, the installation adjustment device 1 includes two adjusting frames 13, and the two adjusting frames 13 are respectively located on both sides of the center line 230 of the crankshaft 23, so as to flexibly adjust the height of one side or both sides of the gearbox 21 as needed.

[0046] According to one or more embodiments of the present invention, the installation adjustment method uses the aforementioned installation adjustment device 1 to measure and adjust the installation position of the gearbox 21. Among them, for the coaxiality requirement in the installation accuracy requirement of the gearbox 21, since the coaxiality requirement between the gearbox bearing hole 211 and the machine body bearing hole 221 is converted into the coaxiality requirement between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23, the additional fit clearance generated thereby needs to be considered when designing the adjustment method and determining the adjustment accuracy. This fit clearance mainly includes the clearance △1 between the journal 232 of the crankshaft 23 and the machine body bearing hole 221, the position deviation between the center hole 233 of the crankshaft 23 and the center line 230 of the crankshaft 23, and the fit clearance between the center detection tool 11 and the center hole 233 of the crankshaft 23.

[0047] The clearance △1 between the journal 232 of the crankshaft 23 and the machine body bearing hole 221 is the diameter of the machine body bearing hole 221 minus the diameter of the journal 232 of the crankshaft 23, where the diameter of the machine body bearing hole 221 can be measured during assembly, and the diameter of the journal 232 of the crankshaft 23 can be measured during processing.

[0048] The position deviation between the center hole 233 of the crankshaft 23 and the center line 230 of the crankshaft 23 and the matching clearance between the axis detection tool 11 and the center hole 233 of the crankshaft 23 need to be measured by dialing after the crankshaft 23 is installed in the body 22. Therefore, the two clearances are combined into one and set as a composite clearance △2. During measurement, the crankshaft 23 is rotated to make the crankshaft 23 fixed in a fixed position. The crankshaft 23 is considered to be below the bearing hole 221 of the body, and the left and right positions are the same. The axis detection tool 11 is installed in the center hole 233 of the crankshaft 23, and the first gauge 112 is rotated for dialing measurement. The measured composite clearance △2 is mainly the difference between the upper and lower values. If the upper value is larger and the lower value is smaller, it is recorded as "+△2", and if the upper value is smaller and the upper value is larger, it is recorded as "-△2".

[0049] The coaxiality requirements between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23 mainly include requirements for four positions: up, down, left, and right. In actual assembly, the crankshaft 23 is located below the bearing hole 221 of the machine body. Therefore, the adjustment requirements for the left and right deviations of the gearbox bearing hole 211 are consistent in value, and the adjustment requirements for the upper and lower deviations are required to be △=△1±△2. When △ is larger at the top and smaller at the bottom and the value meets the design requirements, it is considered that the coaxiality adjustment requirements of the gearbox 21 are met. Using this method to measure the coaxiality of the gearbox 21 can eliminate the influence of the clearance caused by the assembly of the crankshaft 23, the assembly of the axis detection tool 11, and the machining errors of various components, and ensure the measurement accuracy of the coaxiality.

[0050] Reference Figures 1 to 8 According to one embodiment, the installation and adjustment method comprises the following steps:

[0051] 1. Assemble the gearbox 21, the crankshaft 23 and the machine body 22, and connect the gearbox 21 and the machine body 22 through fasteners (not shown). Tighten the fasteners by hand so that the fasteners are not completely tightened, so as to ensure reliable connection and rough positioning between the gearbox 21 and the machine body 22, and allow the relative position of the gearbox 21 and the machine body 22 to be adjusted to a certain extent;

[0052] 2. Reset each second gauge 122 to zero on the inspection platform, connect the horizontal detection tool 12 to the mounting hole 222 of the machine body 22, and install the axis detection tool 11 on the center hole 233 of the crankshaft 23, so that the measuring rod 1121 of the first gauge 112 contacts the inner surface of the gear box bearing hole 211, and move the measuring rod 1121. If the pointer of the dial 1122 moves slightly, it means that the axis detection tool 11 has been installed in place;

[0053] 3. Rotate the first measuring gauge 112 to measure the position deviation at different positions of the bearing hole 211 of the gearbox. If the measured value of the first measuring gauge 112 meets the coaxiality adjustment requirements of the aforementioned gearbox 21 and the readings of each second measuring gauge 122 are consistent, it indicates that the installation accuracy of the gearbox 21 meets the requirements. Tighten the aforementioned fasteners according to the assembly requirements to complete the installation of the gearbox 21. If the measured value of the first measuring gauge 112 or / and the readings of the second measuring gauge 122 do not meet the requirements, adjust the installation position of the gearbox 21 and re-measure until the installation accuracy of the gearbox 21 meets the requirements, and then tighten the aforementioned fasteners according to the assembly requirements to complete the installation of the gearbox 21.

[0054] Among them, the method for adjusting the installation position of the gearbox 21 includes:

[0055] a) By screwing the adjusting bolt 135 of the adjusting frame 13, adjust the height of at least one side of the gearbox 21 so that the measured values of the first measuring gauge 112 at the upper and lower positions of the bearing hole 211 of the gearbox meet the coaxiality adjustment requirements of the gearbox 21 and the readings of each second measuring gauge 122 are consistent;

[0056] b) Gently tap the side of the gearbox 21 with a copper bar to adjust the position of the gearbox 21 in the left-right direction so that the measured values of the first measuring gauge 112 at the left and right positions of the bearing hole 211 of the gearbox meet the coaxiality adjustment requirements of the gearbox 21.

[0057] According to the measurement results, steps a) or / and b) can be executed multiple times until the installation accuracy of the gearbox 21 meets the requirements.

[0058] According to one or more embodiments of the present invention, the installation and adjustment device 1 converts the coaxiality requirement between the bearing hole 211 of the gearbox and the bearing hole 221 of the body into the coaxiality requirement between the bearing hole 211 of the gearbox and the center line 230 of the crankshaft 23. The coaxiality position deviation between the bearing hole 211 of the gearbox and the center line 230 of the crankshaft 23 is measured by using the shaft center detection tool 11, the relative horizontal position deviation between the upper plane 212 of the gearbox 21 and the body 22 is measured by using the horizontal detection tool 12, and the relative position between the upper plane 212 of the gearbox 21 and the body 22 is adjusted by using the adjusting frame 13, which can ensure the installation position accuracy of the gearbox 21 without combined machining and fitting of the positioning pin with the body 22, can save the processing cycle of the gearbox 21 and the body 22, and can realize the interchangeability of the gearbox 21. The structure of the installation and adjustment device 1 is simple, the design is reasonable, it is easy to process, manufacture and assemble, the operation is convenient and reliable, and it is not only applicable to the assembly of diesel engines, but also applicable to the assembly of gasoline engines.

[0059] The installation adjustment method according to one or more embodiments of the present invention converts the coaxiality requirement between the gearbox bearing hole 211 and the engine body bearing hole 221 into the coaxiality requirement between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23. The center line 230 of the crankshaft 23 is measured by the center axis detection tool 11 to obtain the coaxiality position deviation between the gearbox bearing hole 211 and the center line 230 of the crankshaft 23. The relative horizontal position deviation between the upper plane 212 of the gearbox 21 and the engine body 22 is measured by the horizontal detection tool 12. The relative position between the upper plane 212 of the gearbox 21 and the engine body 22 is adjusted by the adjustment bracket 13, which can ensure the installation position accuracy of the gearbox 21 without being combined and machined with the engine body 22 and fitted with positioning pins, save the processing cycle of the gearbox 21 and the engine body 22, and enable the interchangeability of the gearbox 21. The installation adjustment method is reasonably designed, convenient and reliable to operate, and is applicable not only to the assembly of diesel engines but also to the assembly of gasoline engines.

[0060] Although the present invention is disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and decoration made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. An installation and adjustment device for the assembly of an engine, the engine comprising a gearbox, a body and a crankshaft, the gearbox comprising a gearbox bearing hole, the body comprising a plurality of mounting holes of equal height, the mounting holes being higher than the upper plane of the gearbox, the crankshaft comprising a first end, the gearbox bearing hole, the mounting holes and the first end being located on the same side of the body, characterized in that, The end face of the first end is provided with a central hole; the installation and adjustment device includes: An axis detection tool, installed in the central hole, including at least one first measuring gauge, and the first measuring gauge is used to measure the coaxiality position deviation between the bearing hole of the gearbox and the center line of the crankshaft; A horizontal detection tool, connected to at least two of the installation holes, including at least two second measuring gauges, and the second measuring gauges are used to measure the relative horizontal position deviation between the upper plane and the machine body; An adjustment frame, connected to the gearbox, for adjusting the height of at least one side of the gearbox; Wherein, the first measuring gauge and the second measuring gauge are respectively a dial indicator or a micrometer or a lever gauge.

2. The installation and adjustment device according to claim 1, characterized in that, The axis detection tool includes a positioning part and a first measuring gauge, the positioning part is installed in the central hole, and the first measuring gauge can rotate around the axis of the positioning part.

3. The installation and adjustment device according to claim 2, characterized in that, The central hole includes a smooth hole section and a threaded hole section, the positioning part includes a positioning shaft and a positioning threaded part, the positioning shaft is used to be installed in the smooth hole section, the positioning threaded part is used for threaded cooperation with the threaded hole section, the positioning shaft is rotatably connected with the positioning threaded part, and the first measuring gauge is fixedly connected with the positioning shaft.

4. The installation and adjustment device according to claim 3, characterized in that, The axis detection tool further includes a first thrust bearing, there is a step surface between the smooth hole section and the threaded hole section, and the first thrust bearing is installed between the step surface and the positioning shaft.

5. The installation and adjustment device according to claim 3, characterized in that, The axis detection tool further includes a second thrust bearing, the positioning threaded part includes a head and a rod part, the rod part includes a smooth rod section and a screw rod section, the positioning shaft is sleeved on the radial outside of the smooth rod section, and the second thrust bearing is installed between the head and the positioning shaft.

6. The installation and adjustment device according to any one of claims 2 to 5, characterized in that, The axis detection tool further includes a measuring gauge support, the measuring gauge support includes a plurality of measuring gauge installation holes for installing the first measuring gauge, and the distances from the plurality of measuring gauge installation holes to the axis of the positioning part are not equal.

7. The installation and adjustment device according to any one of claims 1 to 5, characterized in that, The horizontal detection tool includes an installation frame, the installation frame is in a door frame shape structure, including a cross beam and two longitudinal beams, the two ends of the cross beam are respectively connected to the tops of the two longitudinal beams, the cross beam is used to be connected to at least two of the installation holes, and the two second measuring gauges are respectively installed at the bottoms of the two longitudinal beams.

8. The installation and adjustment device according to any one of claims 1 to 5, characterized in that, The adjustment frame includes a connection end, a support end and an adjustment part, the connection end is used to be connected with the gearbox, the support end is used to support on the machine body or the ground or the parts fixedly connected with the machine body, and the adjustment part is used to adjust the relative distance between the connection end and the support end.

9. An installation and adjustment method, characterized in that, Measuring and adjusting the installation position of the gearbox by using the installation and adjustment device according to any one of claims 1 to 8, including the following steps: Assembling the gearbox and the machine body and connecting them through fasteners, and the fasteners are in an untightened state; Zeroing each of the second measuring gauges on the inspection platform, connecting the horizontal detection tool to the installation holes of the machine body, and installing the axis detection tool in the central hole of the crankshaft; Measure the position deviation at different positions of the bearing holes of the gearbox through the axis detection tool. If the measured value of the first measuring instrument meets the coaxiality adjustment requirements of the gearbox and the readings of the second measuring instruments are consistent, the installation accuracy of the gearbox meets the requirements; otherwise, adjust and re-measure the installation position of the gearbox until the installation accuracy of the gearbox meets the requirements.

10. The installation and adjustment method according to claim 9, characterized in that, The method for adjusting the installation position of the gearbox includes: Adjust the height of at least one side of the gearbox through the adjustment frame so that the measured values of the first measuring instrument at the upper and lower positions of the bearing holes of the gearbox meet the coaxiality adjustment requirements of the gearbox and the readings of the second measuring instruments are consistent; Adjust the position of the gearbox in the left-right direction so that the measured values of the first measuring instrument at the left and right positions of the bearing holes of the gearbox meet the coaxiality adjustment requirements of the gearbox.

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