A crankshaft position test bench

Abstract

The present invention provides a crankshaft position test bench, which relates to the technical field of test benches and includes a test bench body and a sampling mechanism. An adjusting arm is installed on the upper surface of the test bench body, a lofting table is installed on one side of the test bench body close to the adjusting arm, and a sampling mechanism is arranged on one side of the test bench body close to the lofting table. The sampling mechanism includes a fixed plate, the fixed plate is fixedly connected to one side of the test bench body, a power motor is fixedly connected to one side of the fixed plate, and an output end of the power motor is fixedly connected to a bidirectional screw rod. In the present invention, when the crankshaft that has completed the test needs to be taken out from the lofting table, the sampling work can be completed through the sampling mechanism, thereby improving the work efficiency of sampling. Moreover, when sampling is carried out through the sampling mechanism, the crankshaft to be inspected can be placed into the lofting table through the sampling mechanism, thereby shortening the time of the entire sampling and lofting process and further improving the work efficiency of the test bench body.

Description

Technical Field

[0001] The present invention relates to the technical field of test benches, and in particular to a crankshaft position test bench. Background Art

[0002] A test bench is a device used to test and calibrate the position, angle, and rotational accuracy of a crankshaft. Test benches are commonly used in engine manufacturing, repair, and inspection to ensure that the installation, rotation, and cooperation of various components of the crankshaft meet the requirements, so as to ensure the normal operation of the engine.

[0003] The invention disclosed in the publication number CN114616449A discloses a test bench. The key points of its technical solution are as follows: The present invention relates to a test bench having a base, on which a test bench driver is arranged. The test bench driver has a test shaft that can be driven to rotate about a rotation axis, and the test shaft can be coaxially connected to a bearing shaft of a bearing unit that is supported to rotate about the rotation axis. Here, the bearing unit is detachably arranged in a hollow portion coaxial with the rotation axis of a bearing housing firmly connected to the base, and the bearing shaft has a fastening element at its end extending from the bearing housing and facing away from the test bench driver for detachably fastening a specimen. In the bearing housing, the coaxial hollow portion is a hollow portion in the form of a tapered section symmetrical with respect to the rotation axis. The bearing sleeve of the bearing unit is arranged in the hollow portion, and the bearing sleeve has an outer tapered wall. The tapered wall abuts against the wall of the hollow portion in the form of a tapered section with an outer contour that is at least partially the same as the contour of the wall of the hollow portion in the form of a tapered section. Among them, the bearing sleeve has a through bearing bore coaxial with the rotation axis, and the bearing shaft is rotatably supported in the bearing bore by one or more bearings.

[0004] Regarding the above related content, there are the following technical defects: A crankshaft position test bench is a device used to test and calibrate the position, angle, and rotational accuracy of a crankshaft. Test benches are commonly used in engine manufacturing, repair, and inspection to ensure that the installation, rotation, and cooperation of various components of the crankshaft meet the requirements, so as to ensure the normal operation of the engine. Usually, when testing a crankshaft, the crankshaft is placed in a laying table and cooperated with an adjusting arm to complete the task of testing the crankshaft. However, after the test is completed, when the crankshaft needs to be taken out of the laying table, workers cannot quickly complete the sampling task manually. Sampling will waste a lot of time, affecting the sampling efficiency, and thus delaying the entire work efficiency.

[0005] Therefore, it is necessary to provide a new crankshaft position test bench to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies existing in the prior art and propose a crankshaft position test bench.

[0007] To achieve the above object, the present invention adopts the following technical solutions: It includes a test bench body and a sampling mechanism. An adjusting arm is installed on the upper surface of the test bench body. A lofting table is installed on one side of the test bench body close to the adjusting arm. A sampling mechanism is provided on one side of the test bench body close to the lofting table. The sampling mechanism includes a fixing plate. The fixing plate is fixedly connected to one side of the test bench body. A power motor is fixedly connected to one side of the fixing plate. The output end of the power motor is fixedly connected to a bidirectional screw. Both ends of the arc surface of the bidirectional screw are threadedly connected with adjusting rods. The inner walls of the two adjusting rods slidably penetrate through the same guiding rod. One end of the arc surface of the guiding rod is fixedly connected to the fixing plate. The end of the arc surface of the adjusting rod away from the bidirectional screw is fixedly connected to an adjusting block. Sampling grooves are provided at the positions of the lofting table corresponding to the two adjusting blocks. The two adjusting blocks are respectively slidably connected to the inner walls of the two sampling grooves. A guiding block is fixedly connected to one side of the inner wall of the lofting table. Three contact blocks are fixedly connected to one side of one of the adjusting blocks. Three clamping grooves are provided at the positions of the other adjusting block corresponding to the three contact blocks. A fixing frame is fixedly connected to one end of the test bench body. A turntable rotatably penetrates through the inner wall of the fixing frame. An adjusting gear is fixedly connected to one side of the turntable. A rotating gear is engaged with the tooth surface of the adjusting gear. A first support plate is fixedly connected to the side of the turntable away from the adjusting gear. Cylinders are fixedly connected to both sides of the first support plate. The output end of the cylinder is fixedly connected to a clamping plate. A fixing block is fixedly connected to the side of the cylinder close to the output end. A connecting plate is fixedly connected to one side of the fixing frame. A stepping motor is fixedly connected to one side of the connecting plate. The output end of the stepping motor is fixedly connected to the rotating gear. A lofting frame is fixedly connected to the end of the fixing frame away from the test bench body.

[0008] With the above technical solutions, the crankshaft position test bench body is a device for testing and calibrating the position, angle and rotational accuracy of the crankshaft. The test bench body is usually used in engine manufacturing, maintenance and inspection to ensure that the installation, rotation of the crankshaft and the cooperation of each component meet the requirements to ensure the normal operation of the engine. Usually, when testing the crankshaft, the crankshaft is placed in the lofting table and cooperated with the adjusting arm to complete the task of testing the crankshaft. However, after the test is completed and the crankshaft needs to be taken out of the lofting table, workers cannot quickly complete the sampling task manually. Sampling will waste a lot of time and affect the sampling efficiency, thus delaying the entire work efficiency. At this time, the sampling mechanism can be used for sampling and lofting, thereby improving the work efficiency of the entire test bench body and the work progress.

[0009] Preferably, a contact plate is fixedly connected to the side of the fixing block away from the first support plate. The cross sections of the two contact plates are both arc-shaped.

[0010] With this preferred solution, when the clamping plate drives the crankshaft to come into contact with the fixed block, the contact plate installed on the fixed block can prevent the fixed block from directly contacting the crankshaft, thereby avoiding the abutment damage caused by the direct contact between the fixed block and the crankshaft.

[0011] Preferably, a friction pad is fixedly connected to the side of the clamping plate close to the fixed block, and anti-slip lines are provided on the side of the friction pad away from the clamping plate.

[0012] With the above technical solution, when the clamping plate cooperates with the fixed block to come into contact with the crankshaft, the friction pad installed on the clamping plate can increase the friction force when the clamping plate contacts the crankshaft, thereby improving the stability of the contact between the clamping plate and the crankshaft.

[0013] Preferably, protective rings are fixedly connected to both ends of the arc surface of the guide rod.

[0014] With the above technical solution, when the adjusting rod slides on the guide rod, the protective ring installed on the guide rod can prevent the adjusting rod from contacting the guide rod, so that under the action of the protective ring, the abutment damage caused by the contact between the adjusting rod and the guide rod can be avoided.

[0015] Preferably, the guide rod is a titanium alloy rod.

[0016] With the above technical solution, the surface of the guide rod made of titanium alloy is relatively hard, and it is difficult for the surface of the rod body to deform even when the guide rod is in contact with air for a long time, so it has a long service life.

[0017] Preferably, the cross-sections of both adjusting blocks are arc-shaped.

[0018] With the above technical solution, when the arc-shaped adjusting block comes into contact with the sampling groove, the stability of the contact between the arc-shaped adjusting block and the sampling groove is good, and the arc-shaped adjusting block can improve the stability when coming into contact with the sampling groove.

[0019] Preferably, an auxiliary mechanism is provided on one side of the lofting frame. The auxiliary mechanism includes a second support plate fixedly connected to one side of the lofting frame. An electric push rod is fixedly connected to one side of the second support plate. A connecting rod is fixedly connected to the output end of the electric push rod. A push plate is fixedly connected to one end of the arc surface of the connecting rod. A connecting groove is provided on the lofting frame corresponding to the push plate, and the push plate is slidably connected to the inner wall of the connecting groove.

[0020] With the above technical solution, when the crankshaft that has completed the test is placed into the lofting frame by the sampling mechanism, the sampling work can be carried out through the push plate of the auxiliary mechanism, so that the crankshaft can come into contact with the lofting frame smoothly, improving the stability of lofting and avoiding the situation that the crankshaft slips out of the worker's hand when the worker manually removes the crankshaft from the clamping plate and the fixed block.

[0021] Preferably, a material placing frame is fixedly connected to the side of the pushing plate away from the connecting rod.

[0022] By adopting the above technical solution, when the crankshaft is placed on the pushing plate, the material placing frame installed on the pushing plate can limit the placement position of the crankshaft on the pushing plate, thereby improving the stability when the pushing plate drives the crankshaft to move at high speed.

[0023] Preferably, an anti-slip mechanism is provided on the side of the test bench body away from the sample placing table. The anti-slip mechanism includes a mounting plate which is slidably connected to one side of the test bench body. Four assembly rods are slidably connected to the inner wall of the mounting plate. One end of the arc surface of the four assembly rods is fixedly connected to the test bench body. A connecting ring is slidably connected to the arc surface of the assembly rod. One end of the arc surface of the connecting ring is fixedly connected to one side of the inner wall of the mounting plate. A rotating ring is threadedly connected to the arc surface of the assembly rod. An anti-slip plate is fixedly connected to the side of the mounting plate away from the test bench body.

[0024] By adopting the above technical solution, when the test bench body is placed on the workbench for use, the anti-slip mechanism can improve the stability when the test bench body contacts the workbench, thereby improving the stability when the test bench body is in use and avoiding sliding.

[0025] Preferably, a plurality of anti-slip grooves are formed on the arc surface of the rotating ring, and the plurality of anti-slip grooves are evenly distributed on the arc surface of the rotating ring.

[0026] By adopting the above technical solution, when the rotating ring is rotated on the assembly rod, the anti-slip lines formed on the rotating ring can increase the friction force on the surface of the rotating ring body, thereby improving the speed and efficiency of rotating the rotating ring on the assembly rod through the anti-slip lines.

[0027] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0028] 1. In the present invention, by providing a sampling mechanism, when it is necessary to take out the crankshaft that has completed the test from the sample placing table, the sampling work can be completed through the sampling mechanism, thereby improving the sampling work efficiency. And when sampling through the sampling mechanism, the crankshaft to be inspected can be placed into the sample placing table through the sampling mechanism, thereby shortening the time of the entire sampling and sample placing process and further improving the work efficiency of the test bench body.

[0029] 2. In the present invention, by providing an auxiliary mechanism, when the crankshaft is taken out from the sample placing table through the sampling mechanism and the crankshaft is placed for sampling, the auxiliary mechanism can assist the sampling mechanism to complete the sample placing task, avoiding the situation that the crankshaft collides with the sample placing frame when the crankshaft is placed from a high place.

[0030] 3. In the present invention, by providing an anti-slip mechanism, when using the test bench, the anti-slip mechanism can be installed at the bottom of the test bench. Thus, by installing the anti-slip mechanism at the bottom of the test bench, the stability of the test bench during use can be improved, and the contact effect when the test bench contacts the workbench can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic three-dimensional structure diagram of a crankshaft position test bench proposed by the present invention;

[0032] Figure 2 is a schematic structural diagram of a sampling mechanism of a crankshaft position test bench proposed by the present invention;

[0033] Figure 3 is Figure 2 an enlarged view of part A of

[0034] Figure 4 is a schematic partial structural diagram of a sampling mechanism of a crankshaft position test bench proposed by the present invention;

[0035] Figure 5 is a schematic partially enlarged structural diagram of a sampling mechanism of a crankshaft position test bench proposed by the present invention;

[0036] Figure 6 is a schematic partial structural diagram of a sampling mechanism of a crankshaft position test bench proposed by the present invention;

[0037] Figure 7 is a schematic structural diagram of an auxiliary mechanism of a crankshaft position test bench proposed by the present invention;

[0038] Figure 8 is a schematic partially enlarged structural diagram of an auxiliary mechanism of a crankshaft position test bench proposed by the present invention;

[0039] Figure 9 is a schematic structural diagram of an anti-slip mechanism of a crankshaft position test bench proposed by the present invention;

[0040] Figure 10 is a schematic partially disassembled structural diagram of an anti-slip mechanism of a crankshaft position test bench proposed by the present invention.

[0041] Legend: 1. Test bench body; 2. Sampling mechanism; 201. Fixed plate; 202. Power motor; 203. Bi-directional screw; 204. Adjusting rod; 205. Adjusting block; 206. Sampling groove; 207. Guide block; 208. Contact block; 209. Card slot; 210. Turntable; 211. First support plate; 212. Adjusting gear; 213. Rotating gear; 214. Cylinder; 215. Lofting frame; 216. Clamping plate; 217. Fixed block; 218. Connecting plate; 219. Stepper motor; 220. Contact plate; 221. Friction pad; 222. Guide rod; 223. Protection ring; 224. Fixed frame; 3. Auxiliary mechanism; 31. Connecting groove; 32. Second support plate; 33. Electric push rod; 34. Connecting rod; 35. Push plate; 36. Feeding frame; 4. Anti-slip mechanism; 41. Mounting plate; 42. Connecting ring; 43. Assembly rod; 44. Rotating ring; 45. Anti-slip plate; 46. Anti-slip groove; 5. Adjusting arm; 6. Lofting table. Detailed implementation

[0042] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0043] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0044] Embodiment 1, as Figures 1-10 shown, the present invention provides a crankshaft position test bench, including a test bench body 1 and a sampling mechanism 2. An adjusting arm 5 is installed on the upper surface of the test bench body 1, a lofting table 6 is installed on one side of the test bench body 1 close to the adjusting arm 5, a sampling mechanism 2 is provided on one side of the test bench body 1 close to the lofting table 6, an auxiliary mechanism 3 is provided on one side of the lofting frame 215, and an anti-slip mechanism 4 is provided on the side of the test bench body 1 away from the lofting table 6.

[0045] The following specifically describes the specific settings and functions of its sampling mechanism 2, auxiliary mechanism 3 and anti-slip mechanism 4.

[0046] As Figure 1 - Figure 6As shown, the sampling mechanism 2 includes a fixed plate 201, which is fixedly connected to one side of the test bench body 1. A power motor 202 is fixedly connected to the fixed plate 201. The output end of the power motor 202 is connected to a bidirectional screw 203. Both ends of the bidirectional screw 203 are threadedly connected to adjusting rods 204 through arc surfaces. A guiding rod 222 slidably penetrates through the inner wall of the adjusting rod 204. One end of the guiding rod 222 is fixed to the fixed plate 201. The end of the adjusting rod 204 away from the bidirectional screw 203 is connected to an adjusting block 205. A sampling groove 206 is provided on the sample laying table 6 corresponding to the position of the adjusting block 205. The adjusting block 205 is slidably connected to the inner wall of the sampling groove 206. A guiding block 207 is fixedly connected to the inner wall of the sample laying table 6. Three contact blocks 208 are fixedly connected to one side of one adjusting block 205, and three clamping grooves 209 are provided on the other adjusting block 205. A fixed frame 224 is fixedly connected to one end of the test bench body 1. A turntable 210 rotatably penetrates through the inner wall of the fixed frame 224. An adjusting gear 212 is fixedly connected to one side of the turntable 210. The adjusting gear 212 meshes with a rotating gear 213. A first support plate 211 is connected to the side of the turntable 210 away from the adjusting gear 212. Cylinders 214 are fixedly connected to both sides of the support plate. The output end of the cylinder 214 is connected to a clamping plate 216. A fixed block 217 is connected to the side of the clamping plate 216 close to the output end. A connecting plate 218 is fixedly connected to one side of the fixed frame 224. A stepping motor 219 is fixedly connected to one side of the connecting plate 218. The output end of the stepping motor 219 is connected to the rotating gear 213. A sample laying frame 215 is connected to the end of the fixed frame 224 away from the test bench body 1. The crankshaft position test bench body 1 is a device for testing and calibrating the position, angle and rotational accuracy of the crankshaft. The test bench body 1 is usually used in engine manufacturing, maintenance and detection to ensure that the installation, rotation of the crankshaft and the cooperation of each component meet the requirements to ensure the normal operation of the engine. Usually, when testing the crankshaft, the crankshaft is placed in the sample laying table 6 and cooperated with the adjusting arm 5 to complete the task of testing the crankshaft. However, after the test is completed and the crankshaft needs to be taken out of the sample laying table 6, workers cannot quickly complete the sampling task manually. Sampling will waste a lot of time, affecting the sampling efficiency and thus delaying the entire work efficiency. At this time, the sampling mechanism 2 can be used for sampling and sample laying, thereby improving the working efficiency of the entire test bench body 1 and accelerating the work progress. A contact plate 220 is fixedly connected to the side of the fixed block 217 away from the first support plate 211. The cross-section of the contact plate 220 is arc-shaped. When the clamping plate 216 drives the crankshaft to contact the fixed block 217, the contact plate 220 installed on the fixed block 217 can prevent the fixed block 217 from directly contacting the crankshaft, thus avoiding abutment damage caused by the direct contact between the fixed block 217 and the crankshaft. A friction pad 221 is fixedly connected to the side of the clamping plate 216 close to the fixed block 217. Anti-slip lines are provided on the side of the friction pad 221 away from the clamping plate 216. When the clamping plate 216 cooperates with the fixed block 217 to contact the crankshaft,The friction pad 221 installed on the clamping plate 216 can increase the frictional force when the clamping plate 216 contacts the crankshaft, thereby improving the stability of the contact between the clamping plate 216 and the crankshaft. Both ends of the arc surface of the guide rod 222 are fixedly connected with protective rings 223. When the adjusting rod 204 slides on the guide rod 222, the protective rings 223 installed on the guide rod 222 can prevent the adjusting rod 204 from contacting the guide rod 222. Thus, under the action of the protective rings 223, it can avoid the contact and abutment damage between the adjusting rod 204 and the guide rod 222. The guide rod 222 is a titanium alloy rod. The surface of the rod body of the guide rod 222 made of titanium alloy is relatively hard, and even if the guide rod 222 is in contact with air for a long time, it is difficult for its rod body surface to deform, and it has a long service life. The cross-sections of the two adjusting blocks 205 are both arc-shaped. When the arc-shaped adjusting blocks 205 contact the sampling groove 206, the stability of the contact between the arc-shaped adjusting blocks 205 and the sampling groove 206 is good, and the arc-shaped adjusting blocks 205 can improve the stability when contacting the sampling groove 206.,

[0047] As Figure 7 and Figure 8 shown, the auxiliary mechanism 3 includes a second support plate 32. The second support plate 32 is fixedly connected to one side of the lofting frame 215. An electric push rod 33 is installed on one side of the second support plate 32. The output end of the electric push rod 33 is fixedly connected with a connecting rod 34. The movement of the electric push rod 33 can drive the connecting rod 34 to be adjusted. One end of the arc surface of the connecting rod 34 is fixedly connected with a push plate 35. The movement of the connecting rod 34 can drive the push plate 35 to move. A connecting groove 31 is opened in the lofting frame 215 corresponding to the position of the push plate 35. The push plate 35 is slidably connected to the inner wall of the connecting groove 31. When the crankshaft that has completed the test is placed in the lofting frame 215 through the sampling mechanism 2, the sampling work can be carried out through the push plate 35 of the auxiliary mechanism 3, so that the crankshaft can contact the lofting frame 215 smoothly, improving the stability of lofting and avoiding the situation that the crankshaft slips out of the worker's hand when the worker manually removes the crankshaft from the clamping plate 216 and the fixed block 217. A feeding frame 36 is fixedly connected to the side of the push plate 35 away from the connecting rod 34. When the crankshaft is placed on the push plate 35, the feeding frame 36 installed on the push plate 35 can limit the placement position of the crankshaft on the push plate 35, thereby improving the stability when the push plate 35 drives the crankshaft to move at high speed.

[0048] As Figure 9 and Figure 10As shown, the anti-slip mechanism 4 includes a mounting plate 41. The mounting plate 41 is slidably connected to one side of the test bench body 1. Four assembly rods 43 are slidably connected to the inner wall of the mounting plate 41. The four assembly rods 43 can slide out from the inner wall of the mounting plate 41. One end of the arc surface of the four assembly rods 43 is fixedly connected to the test bench body 1. A connecting ring 42 is slidably connected to the arc surface of the assembly rod 43. One end of the arc surface of the connecting ring 42 is fixedly connected to one side of the inner wall of the mounting plate 41. A rotating ring 44 is threadedly connected to the arc surface of the assembly rod 43. An anti-slip plate 45 is fixedly connected to the side of the mounting plate 41 away from the test bench body 1. When the test bench body 1 is placed on the workbench for use, the anti-slip mechanism 4 can improve the stability when the test bench body 1 contacts the workbench, thereby improving the stability of the test bench body 1 during use and avoiding sliding. A number of anti-slip grooves 46 are formed on the arc surface of the rotating ring 44. The number of anti-slip grooves 46 is evenly distributed on the arc surface of the rotating ring 44. When the rotating ring 44 is rotated on the assembly rod 43, the anti-slip lines formed on the rotating ring 44 can increase the friction on the surface of the rotating ring 44, thereby improving the speed and efficiency of rotating the rotating ring 44 on the assembly rod 43 through the anti-slip lines.

[0049] The overall working principle is as follows: Place the crankshaft to be inspected between one clamping plate 216 and the fixed block 217. At this time, start one of the cylinders 214. The movement of the cylinder 214 will drive the clamping plate 216 to move. The movement of the clamping plate 216 will cooperate with the fixed block 217 to clamp the crankshaft to be inspected. At this time, the stepping motor 219 installed on the connecting plate 218 can be started. The movement of the stepping motor 219 will drive the rotating gear 213 to move. The movement of the rotating gear 213 will drive the adjusting gear 212 to rotate. At this time, the turntable 210 can be driven by the adjusting gear 212 to rotate within the fixed frame 224. At this time, the two cylinders 214 installed on the first support plate 211 can be driven to move. When the other cylinder 214 moves to the upper end of the laying table 6, the power motor 202 installed on the fixed plate 201 can be started. The movement of the power motor 202 will drive the bidirectional screw 203 to rotate through the output end. The rotation of the bidirectional screw 203 can drive the adjusting rod 204 to move towards the side close to each other along the direction of the guiding rod 222. The movement of the adjusting rod 204 will drive the adjusting block 205 to slide within the sampling groove 206. Under the action of the two adjusting blocks 205, the contact block 208 can be driven to connect with the clamping groove 209. At this time, the crankshaft that has completed the test can be taken out from the laying table 6. At this time, the other cylinder 214 can be started. The movement of the cylinder 214 will drive the clamping plate 216 to move through the output end. The movement of the clamping plate 216 will drive the crankshaft to contact the guiding block 207. The crankshaft will move along the guiding block 207 towards the fixed block 217. The crankshaft that has completed the test can be clamped by the clamping plate 216. At this time, the stepping motor 219 can be started, and the crankshaft that has completed the test can be taken out from the laying table 6 and moved into the laying frame 215, and the crankshaft to be inspected will move to the upper end of the laying table 6. At this time, the cylinder 214 can be started again. One of the cylinders 214 will release the fixing effect on the crankshaft to be inspected. The crankshaft to be inspected can contact the laying table 6 along with the guiding block 207. The other cylinder 214 will release the fixing effect on the crankshaft, and the sampling work can be completed. When the clamping plate 216 drives the crankshaft to contact the fixed block 217, the contact plate 220 installed on the fixed block 217 can prevent the fixed block 217 from directly contacting the crankshaft, thereby avoiding the abutment damage caused by the direct contact between the fixed block 217 and the crankshaft. When the clamping plate 216 cooperates with the fixed block 217 to contact the crankshaft, the friction pad 221 installed on the clamping plate 216 can increase the friction force when the clamping plate 216 contacts the crankshaft, thereby improving the stability of the contact between the clamping plate 216 and the crankshaft. When the adjusting rod 204 slides on the guiding rod 222, the protective ring 223 installed on the guiding rod 222 can prevent the adjusting rod 204 from contacting the guiding rod 222. Therefore, under the action of the protective ring 223, the contact between the adjusting rod 204 and the guiding rod 222 can be prevented from causing abutment damage. The guiding rod 222 made of titanium alloy has a relatively hard surface on its rod body, and it is also difficult for the surface of the rod body to deform after long-term contact with air.It has a relatively long service life. When the arc-shaped adjusting block 205 comes into contact with the sampling groove 206, the stability of the arc-shaped adjusting block 205 when it contacts the sampling groove 206 is relatively good. The arc-shaped adjusting block 205 can improve the stability when it comes into contact with the sampling groove 206.,

[0050] When the sampling mechanism 2 transports the crankshaft to the upper end of the laying frame 215, the electric push rod 33 installed on the second support plate 32 can be started. The movement of the electric push rod 33 will drive the connecting rod 34 to move. The movement of the connecting rod 34 will drive the push plate 35 to slide in the connecting groove 31. At this time, the push plate 35 can move towards the direction of the crankshaft. At this time, the fixing effect of the sampling mechanism 2 on the crankshaft can be released, and the crankshaft can fall smoothly into the laying frame 215. Moreover, through the auxiliary mechanism 3, the crankshaft to be inspected can also be transported, so that the crankshaft can be stably clamped and fixed by the sampling mechanism 2. Under the action of the auxiliary mechanism 3, the feeding mechanism can automatically replace the crankshaft for testing. When the crankshaft is placed on the push plate 35, the feeding frame 36 installed on the push plate 35 can limit the placement position of the crankshaft on the push plate 35, so as to improve the stability when the push plate 35 drives the crankshaft to move at high speed.

[0051] Align the connecting ring 42 installed on the inner wall of the mounting plate 41 with the assembling rod 43, and make one side of the mounting plate 41 contact the test bench body 1. At this time, the rotating ring 44 can be rotated on the assembling rod 43, and the connecting ring 42 can be fixed on one side of the test bench body 1 through the rotating ring 44, and then the mounting plate 41 can be fixed on the test bench body 1. The anti-slip plate 45 installed on the mounting plate 41 can increase the friction force at the bottom of the entire test bench body 1. When the rotating ring 44 is rotated on the assembling rod 43, the anti-slip lines formed on the rotating ring 44 can increase the friction force on the surface of the rotating ring 44, so that the speed and efficiency of rotating the rotating ring 44 on the assembling rod 43 can be improved through the anti-slip lines.

[0052] The above is only a preferred embodiment of the present invention, and it does not limit the present invention in other forms. Any person skilled in the relevant art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A crankshaft position test bench, comprising a test bench body (1) and a sampling mechanism (2), characterized in that: An adjustment arm (5) is installed on the upper surface of the test bench body (1), and a sample placing table (6) is installed on a side of the test bench body (1) close to the adjustment arm (5). (1) A sampling mechanism (2) is provided on one side close to the sample placing table (6), the sampling mechanism (2) comprising a fixing plate (201), the fixing plate (201) being fixedly connected to one side of the test table body (1), one side of the fixing plate (201) being fixedly connected to a power motor (202), the output end of the power motor (202) being fixedly connected to a bidirectional screw (203), both ends of the circular arc surface of the bidirectional screw (203) being threadedly connected to adjusting rods (204), the inner walls of the two adjusting rods (204) being slidably penetrated by a same guide rod (222), the guide rods (222) being arranged to slide through the inner walls of the two adjusting rods (204), and the guide rods (222) being arranged to slide through the inner walls of the two adjusting rods (204). One end of the circular arc surface of the rod (222) is fixedly connected to the fixed plate (201); one end of the circular arc surface of the adjusting rod (204) away from the bidirectional screw (203) is fixedly connected to an adjusting block (205); the positions of the setting-out platform (6) corresponding to the two adjusting blocks (205) are each provided with a sampling groove (206); the two adjusting blocks (205) are respectively slidably connected to the inner walls of the two sampling grooves (206); one side of the inner wall of the setting-out platform (6) is fixedly connected to a guide block (207); one side of one of the adjusting blocks (205) is fixedly connected to three contact blocks (208); and the other side of the adjusting block (205) is fixedly connected to a guide block (207). Three slots (209) are provided at positions of the adjustment blocks (205) corresponding to the three contact blocks (208); one end of the test bench body (1) is fixedly connected to a fixed frame (224); a rotating disk (210) is rotatably penetrated through the inner wall of the fixed frame (224); an adjustment gear (212) is fixedly connected to one side of the rotating disk (210); a rotating gear (213) is meshed on the tooth surface of the adjustment gear (212); a first support plate (211) is fixedly connected to the side of the rotating disk (210) away from the adjustment gear (212); and the first support plate (211) is fixedly connected to the first support plate (211). 1) are fixedly connected to cylinders (214) on both sides, the output end of the cylinder (214) is fixedly connected to a clamping plate (216), the side of the cylinder (214) close to the output end is fixedly connected to a fixing block (217), one side of the fixing frame (224) is fixedly connected to a connecting plate (218), one side of the connecting plate (218) is fixedly connected to a stepping motor (219), the output end of the stepping motor (219) is fixedly connected to a rotating gear (213), and the end of the fixing frame (224) away from the test bench body (1) is fixedly connected to a lofting frame (215).

2. A crankshaft position test bench according to claim 1, characterized in that: A contact plate (220) is fixedly connected to a side of the fixing block (217) away from the first supporting plate (211); the cross section of the contact plate (220) is arc-shaped.

3. A crankshaft position test bench according to claim 1, characterized in that: A friction pad (221) is fixedly connected to a side of the clamping plate (216) close to the fixing block (217), and an anti-slip pattern is provided on a side of the friction pad (221) away from the clamping plate (216).

4. A crankshaft position test bench according to claim 1, characterized in that: Both ends of the arc surface of the guide rod (222) are fixedly connected with protection rings (223).

5. The crankshaft position test bench according to claim 1, characterized in that: The guide rod (222) is a titanium alloy rod.

6. The crankshaft position test bench according to claim 1, characterized in that: The cross-sections of the two adjustment blocks (205) are both arc-shaped.

7. The crankshaft position test bench according to claim 1, characterized in that: An auxiliary mechanism (3) is provided on one side of the lofting frame (215), the auxiliary mechanism (3) comprising a second support plate (32), the second support plate (32) being fixedly connected to one side of the lofting frame (215), an electric push rod (33) being fixedly connected to one side of the second support plate (32), an output end of the electric push rod (33) being fixedly connected to a connecting rod (34), an arc surface end of the connecting rod (34) being fixedly connected to a push plate (35), a connecting groove (31) being provided on the lofting frame (215) at a position corresponding to the push plate (35), the push plate (35) being slidably connected to an inner wall of the connecting groove (31).

8. A crankshaft position test bench according to claim 7, characterized in that: A material discharging frame (36) is fixedly connected to a side of the push plate (35) away from the connecting rod (34).

9. The crankshaft position test bench according to claim 1, characterized in that: An anti-slip mechanism (4) is provided on a side of the test bench body (1) away from the sample setting table (6), the anti-slip mechanism (4) comprising a mounting plate (41), the mounting plate (41) being slidably connected to one side of the test bench body (1), four assembly rods (43) being slidably connected to the inner wall of the mounting plate (41), one end of the circular arc surface of the four assembly rods (43) being fixedly connected to the test bench body (1), a connecting ring (42) being slidably connected to the circular arc surface of the assembly rod (43), one end of the circular arc surface of the connecting ring (42) being fixedly connected to one side of the inner wall of the mounting plate (41), a rotating ring (44) being threadedly connected to the circular arc surface of the assembly rod (43), and an anti-slip plate (45) being fixedly connected to the side of the mounting plate (41) away from the test bench body (1).

10. A crankshaft position test bench according to claim 9, characterized in that: The arc surface of the rotating ring (44) is provided with a plurality of anti-skid grooves (46), and the plurality of anti-skid grooves (46) are evenly distributed on the arc surface of the rotating ring (44).

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