Snow vehicle load test board and snow vehicle using same
By designing a bobsleigh load test bench and using an actuator to simulate the stress conditions of a bobsleigh, the gap in the reliability test of bobsleigh loads was solved, achieving more accurate load testing and avoiding the generation of internal stress.
Patent Information
- Application Number
- CN202422511277.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing technology lacks a device for testing the reliability of bobsleigh loads, resulting in an inability to effectively determine whether the load meets technical requirements during the development process.
A bobsleigh load test bench was designed, which includes a stand, a blade module and a loading module. By simulating the stress conditions of athletes riding, the actuator mechanism is used to drive the loading component downward to simulate the stress form of the bobsleigh, making it closer to the actual state and avoiding the generation of internal stress.
The reliability test of the bobsleigh load was achieved, the stress conditions in actual movement were simulated, the generation of internal stress was avoided, and the accuracy of the test was improved.
Smart Images
Figure CN223320050U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of snowmobile manufacturing, in particular to a snowmobile load test bench and a snowmobile using the test bench. Background Art
[0002] Bobsleigh is a competitive sporting equipment that experiences complex loads due to the various turns and bends during competition. Currently, there is no testing equipment in China capable of verifying the load reliability of bobsleighs. This technology remains a technological gap, making it difficult to effectively determine whether the load meets technical requirements during the bobsleigh development process. Utility Model Content
[0003] The utility model aims to provide a snowmobile load test bench to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0004] The snowmobile load test bench according to the first embodiment of the present invention comprises:
[0005] Stand;
[0006] An ice blade module, comprising a left ice blade assembly and a right ice blade assembly, the left ice blade assembly comprising a left front ice blade clamp and a left rear ice blade slide, the left front ice blade clamp being located in front of the left rear ice blade slide, the right ice blade assembly comprising a right front ice blade clamp and a right rear ice blade slide, the right front ice blade clamp being located in front of the right rear ice blade slide, one of the left ice blade assembly and the right ice blade assembly being fixedly connected to the platform, and the other being slidably connected to the platform along the left-right direction, the left front ice blade clamp and the right front ice blade clamp both being provided with a plurality of ice blade connecting holes, the left rear ice blade slide and the right rear ice blade slide both being provided with a slide groove arranged along the front-to-back direction, the slide groove being used for placing the rear ice blade of the snowmobile;
[0007] The first loading module includes a first bracket, a first actuating mechanism and a first loading part. The first bracket is fixedly connected to the platform, the first actuating mechanism is installed on the first bracket, and the first actuating mechanism drives the first loading part to move in the up and down directions, so that the first loading part has a downward loading force.
[0008] The snowmobile load test bench according to the embodiment of the present invention has at least the following beneficial effects: before conducting the test, the front ice skates are first removed from the two front ice skate racks of the snowmobile, and then an empty front ice skate rack is aligned with the multiple ice skate connecting holes of the left front ice skate clamp, and the other empty front ice skate rack is aligned with the multiple ice skate connecting holes of the right front ice skate clamp, and the two are connected in pairs using connecting parts, so that the two front ice skates of the snowmobile are replaced by the left front ice skate clamp and the right front ice skate clamp respectively, and the two rear ice skates of the snowmobile are slidably set in the slide grooves of the left rear ice skate slide and the right rear ice skate slide respectively. At this time, the two front ice skates of the snowmobile are The rear ice blade can be displaced in the front-to-back direction relative to the two front ice blades, and the two left ice blades and the two right ice blades of the bobsleigh are displaced in the left-to-right direction, and then the position of the first loading part is set according to the force point of the bobsleigh seat; during the test, the first actuator drives the first loading part to move downward toward the bobsleigh to simulate the force conditions when the athlete is riding. During this process, the rear ice blade and the front ice blade of the bobsleigh are displaced in the front-to-back direction, and the left ice blade and the right ice blade of the bobsleigh are displaced in the left-to-right direction, so that the force form of the bobsleigh is closer to the actual state and the generation of internal stress is avoided.
[0009] According to some embodiments of the present invention, the first loading module further includes a loading beam, a plurality of first loading parts are provided, and the plurality of first loading parts are spaced apart along the length direction of the loading beam, and the first actuating mechanism drives the loading beam to move in the up and down directions.
[0010] According to some embodiments of the present invention, the first actuating mechanism includes a first linear actuator, a first guide sleeve and a first guide rod, the first guide sleeve is fixedly connected to the first bracket, the first guide rod is slidably connected to the first guide sleeve, and the first linear actuator is connected to the loading beam through the first guide rod.
[0011] According to some embodiments of the present invention, two first guide sleeves and two first guide rods are respectively provided, the two first guide rods are respectively connected to the two first guide sleeves in a one-to-one correspondence, and the two ends of the two first guide rods are respectively connected to the first upper rib plate and the first lower rib plate, the first upper rib plate is connected to the first linear actuator, and the first lower rib plate is connected to the loading beam.
[0012] According to some embodiments of the present invention, a first upper rotating frame is connected between the first linear actuator and the first upper rib, and the first upper rotating frame has a rotating axis arranged in the left-right direction.
[0013] According to some embodiments of the present invention, a plurality of mounting holes are provided on the loading beam, and the plurality of mounting holes are spaced apart along the length direction of the loading beam. The mounting holes are used to connect the first loading parts, and the number of the mounting holes is not less than the number of the first loading parts.
[0014] According to some embodiments of the present invention, the snowmobile load test bench also includes a second loading module, the second loading module includes a second bracket, a second actuating mechanism and a second loading part, the second bracket is fixedly connected to the stand, the second actuating mechanism is installed on the second bracket, and the second actuating mechanism drives the second loading part to move in the up and down directions, so that the second loading part has a downward loading force.
[0015] According to some embodiments of the present invention, the first loading part includes a first connecting shaft, a first lower rotating frame, a first loading platform and a first pad connected in sequence, the first connecting shaft is connected to the first actuating mechanism, and the first lower rotating frame has a rotation axis arranged along the left and right directions.
[0016] According to some embodiments of the present invention, both the left front ice skate clamp and the right front ice skate clamp are provided with waist-shaped holes, and the waist-shaped holes are arranged along the front-to-back direction.
[0017] The snowmobile according to the second embodiment of the present invention is subjected to load testing using the above-mentioned snowmobile load testing bench.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the snowmobile load test bench provided by an embodiment of the utility model, in which the snowmobile is placed and the first bracket and the second bracket are hidden;
[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of a snowmobile load test bench provided by an embodiment of the present invention, with the snowmobile placed thereon, with the snowmobile half-cut;
[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the front skate clamp provided by an embodiment of the present utility model;
[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the rear skate slide provided by an embodiment of the utility model;
[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the first loading module provided by an embodiment of the present utility model after the first bracket is hidden;
[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the second loading module provided by an embodiment of the present utility model after the second bracket is hidden;
[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the first loading part provided in an embodiment of the present utility model.
[0026] In the accompanying drawings: 100-skate module, 200-first loading module, 300-second loading module, 400-bobsleigh, 410-left rear skate, 420-right rear skate, 110-left front skate clamp, 120-right front skate clamp, 130-left rear skate slide, 140-right rear skate slide, 111-front connecting plate, 112-skate replacement plate, 113-skate connecting hole, 430-front skate rack, 114-front fixed connecting hole, 131-rear connecting plate, 132-slide groove, 440-rear skate rack, 210-first bracket, 220-first actuating mechanism, 240-loading beam, 230-first loading part, 221-first linear actuator, 222-first guide sleeve, 223- First guide rod, 224-first telescopic part, 225-first upper rib, 226-first lower rib, 227-first upper rotating frame, 242-loading shaft, 241-mounting hole, 231-first connecting shaft, 232-first lower rotating frame, 233-first loading platform, 234-first cushion block, 310-second bracket, 320-second actuating mechanism, 330-second loading part, 321-second linear actuator, 322-second guide sleeve, 323-second guide rod, 324-second telescopic part, 325-second upper rib, 326-second lower rib, 327-second upper rotating frame, 331-second connecting shaft, 332-second lower rotating frame, 333-second loading platform, 334-second cushion block. DETAILED DESCRIPTION
[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.
[0028] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0029] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.
[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0031] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a snowmobile load test bench, which includes a stand (not shown in the drawings), a blade module 100, a first loading module 200, and a second loading module 300. The stand serves as the installation base for the entire snowmobile load test bench, and the blade module 100, the first loading module 200, and the second loading module 300 are all mounted on the stand to facilitate the overall transportation of the snowmobile load test bench. Of course, in other embodiments, the stand may not be provided, in which case the blade module 100, the first loading module 200, and the second loading module 300 are all mounted on the ground. However, the snowmobile load test bench can only be used in a fixed position and cannot be transported as a whole to different locations. For ease of description, the following text takes the embodiment provided with a stand as the preferred embodiment, and takes the front blade of the snowmobile 400 as the front direction, the rear blade of the snowmobile 400 as the rear direction, the left blade of the snowmobile 400 as the left direction, the right blade of the snowmobile 400 as the right direction, the cab entrance of the snowmobile 400 as the upper direction, and the chassis of the snowmobile 400 as the lower direction.
[0032] Since the bobsleigh 400 has four ice blades, namely the left front ice blade, the right front ice blade, the left rear ice blade 410 and the right rear ice blade 420, the ice blade module 100 of the bobsleigh load test bench also has four components, namely the left front ice blade clamp 110, the right front ice blade clamp 120, the left rear ice blade slide 130 and the right rear ice blade slide 140. The setting positions of the left front ice blade clamp 110, the right front ice blade clamp 120, the left rear ice blade slide 130 and the right rear ice blade slide 140 respectively correspond to the positions of the four ice blades of the bobsleigh 400, that is, the left front ice blade clamp 110 is located in front of the left rear ice blade slide 130, the left front ice blade clamp 110 is located on the left side of the right front ice blade clamp 120, the right front ice blade clamp 120 is located in front of the right rear ice blade slide 140, and the right rear ice blade slide 140 is located on the right side of the left rear ice blade slide 130. The left front ice blade clamp 110 and the right front ice blade clamp 120 are collectively referred to as the front ice blade clamps, the left rear ice blade slide 130 and the right rear ice blade slide 140 are collectively referred to as the rear ice blade slides, and the left front ice blade clamp 110 and the left rear ice blade slide 130 are collectively referred to as the left ice blade assembly, and the right front ice blade clamp 120 and the right rear ice blade slide 140 are collectively referred to as the right ice blade assembly.
[0033] Specifically, the structure of the front skate clamp can refer to the attached Figure 3 The front ice blade fixture includes a front connecting plate 111 and an ice blade replacement plate 112. The front connecting plate 111 and the ice blade replacement plate 112 are integrally formed. The ice blade replacement plate 112 is provided with a plurality of ice blade connection holes 113 for connecting to the front ice blade holder 430 of the bobsleigh 400. After the front ice blades of the bobsleigh 400 are removed, the front ice blade holder 430 can be connected to the ice blade replacement plate 112 through the plurality of ice blade connection holes 113. The ice blade replacement plate 112 now replaces the original front ice blades of the bobsleigh 400. The front connecting plate 111 is provided with a plurality of front fixing holes 114. The connecting screws on the platform pass through the front fixing holes 114 and are then fastened to the front connecting plate 111 using nuts, thereby securing the front connecting plate 111 to the platform.
[0034] Furthermore, since the bobsleigh 400 is divided into a two-man bobsleigh and a four-man bobsleigh, the two different specifications of bobsleigh 400 have different front and rear wheelbases. Even the bobsleigh 400 of the same specification may have different front and rear wheelbases. Therefore, in order to adapt to the bobsleigh 400 with different front and rear wheelbases, the front fixed connection hole 114 on the front connecting plate 111 can be selected as a waist-shaped hole. The waist-shaped hole is arranged along the front and rear directions, so that the relative position between the front connecting plate 111 and the stand can be adjusted front and rear. Although the relative position between the front connecting plate 111 and the stand can be adjusted front and back, after the front and rear wheelbase of the bobsleigh 400 is determined, the front and rear positions between the front connecting plate 111 and the stand will be locked. Since the ice blade replacement plate 112 of the front ice blade clamp replaces the front ice blade of the bobsleigh 400, and the ice blade replacement plate 112 and the front connecting plate 111 are integrally formed, the relative position of the ice blade replacement plate 112 and the front connecting plate 111 remains unchanged. Therefore, when the bobsleigh 400 is connected to the front ice blade clamp, the front and rear positions between the two front ice blade racks 430 of the bobsleigh 400 and the stand are limited, that is, the two front ice blade racks 430 of the bobsleigh 400 cannot move front and back relative to the stand.
[0035] The structure of the rear skate slide can refer to the attached Figure 4 The rear blade slide includes a rear connecting plate 131, which is provided with a slide groove 132 extending in the front-to-back direction. The slide groove 132 allows the rear blade of the snowmobile 400 to slide back and forth. The rear connecting plate 131 is provided with multiple rear fixing holes (not shown in the drawings). The connecting screws on the frame pass through the rear fixing holes and are then fastened to the rear connecting plate 131 using nuts, thereby securing the rear connecting plate 131 to the frame. Because the two rear blades of the snowmobile 400 can slide back and forth along the slide grooves 132 of the two rear connecting plates 131, the two rear blade holders 440 of the snowmobile 400 can move back and forth relative to the frame.
[0036] Furthermore, one of the left and right blade assemblies is fixedly connected to the frame, while the other is slidably connected to the frame in the left-right direction. In this embodiment, the left blade assembly is slidably connected to the frame in the left-right direction, while the right blade assembly is fixedly connected to the frame. Specifically, the frame is provided with a slide plate (not shown in the accompanying drawings) below the front connecting plate 111 and the rear connecting plate 131 on the left side. The frame is provided with slide rails arranged in the left-right direction. The bottom surface of the slide plate is provided with a slider that slidably connects to the slide rails. The slider and the slide rails cooperate to slide along the left-right direction of the frame. For the front connecting plate 111 and the rear connecting plate 131 on the left side, the connecting screws on the slide plate are inserted through the front fixing connection holes 114 and then fixed to the front connecting plate 111 with nuts. The connecting screws on the slide plate are inserted through the rear fixing connection holes and then fixed to the rear connecting plate 131 with nuts. This allows the front connecting plate 111 and the rear connecting plate 131 on the left side to move freely in the left-right direction.
[0037] It is understandable that in other embodiments, the right ice blade assembly can be configured to be slidably connected to the stand in the left-right direction, and the left ice blade assembly can be configured to be fixedly connected to the stand, without being limited to the above embodiments.
[0038] like Figure 2 and Figure 5 As shown, for a four-man bobsleigh, the first loading module 200 includes a first bracket 210, a first actuating mechanism 220, a loading beam 240, and three first loading sections 230. The first bracket 210 is fixedly connected to the platform, and the first actuating mechanism 220 is mounted on the first bracket 210. The loading beam 240 is arranged in the front-to-back direction. The first actuating mechanism 220 drives the loading beam 240 in the vertical direction. The three first loading sections 230 are spaced apart along the length of the loading beam 240. The loading beam 240 can be made of steel, preferably an I-beam or C-beam, to improve its bending resistance under load. The three first loading sections 230 correspond to the three seat load points on the four-man bobsleigh located on the same plane. This allows the first actuating mechanism 220 to simultaneously apply downward load to the three first loading sections 230 through the loading beam 240, solving the problem of difficulty in loading local points due to interference from the vehicle body structure. For the last seat stress point of the four-man bobsleigh, since its position is in a different plane from the positions of the other three seat stress points, the last seat stress point of the four-man bobsleigh is subjected to a downward load by the second loading module 300.
[0039] Specifically, the first actuating mechanism 220 includes a first linear actuator 221, a first guide sleeve 222, and a first guide rod 223. The first linear actuator 221 includes, but is not limited to, a screw-slider linear drive device, a gear rack linear drive device, a pulley synchronous belt linear drive device, a pneumatic cylinder, a hydraulic cylinder, an electric push rod, or a linear motor. In this embodiment, the first linear actuator 221 can be a hydraulic cylinder. The first guide sleeve 222 can be a linear bearing having a first guide hole arranged in the vertical direction. The first guide rod 223 can be an optical axis. The first guide sleeve 222 is fixedly connected to the first bracket 210, and the first guide rod 223 is slidably connected to the first guide hole of the first guide sleeve 222, allowing the first guide rod 223 to slide along the extension direction of the first guide hole. The first linear actuator 221 is connected to the loading beam 240 via a first guide rod 223. When the first linear actuator 221 extends its first telescopic portion 224 downward, the first telescopic portion 224 first drives the first guide rod 223 downward along the guide direction of the first guide sleeve 222. The first guide rod 223 then transmits the downward force of the first linear actuator 221 to the loading beam 240. Finally, the loading beam 240 transmits this downward force to the three first loading portions 230, thereby applying downward loads to the three seat load points of the four-man bobsleigh, simulating the forces exerted by athletes riding. During this process, the rear and front blades of the bobsleigh 400 undergo fore-and-aft displacement, while the left and right blades of the bobsleigh 400 undergo lateral displacement. This makes the force pattern on the bobsleigh 400 more realistic and avoids the generation of internal stress.
[0040] Furthermore, to resist the bending moment generated by the first linear actuator 221, two first guide sleeves 222 and two first guide rods 223 are provided. The two first guide sleeves 222 are fixedly connected to the first bracket 210 in the front-to-back direction, and the two first guide rods 223 are slidably connected to the corresponding first guide sleeves 222. The ends of the two first guide rods 223 are respectively connected to the first upper rib 225 and the first lower rib 226. To prevent damage to the first linear actuator 221 caused by lateral forces generated by deformation, the lower end of the first linear actuator 221 is connected to the first upper rib 225 via a first upper rotating frame 227. The first upper rotating frame 227 has a rotation axis arranged in the left-right direction.
[0041] The upper end of the loading beam 240 is connected to the first lower rib 226 via a loading shaft 242. The loading beam 240 is provided with a plurality of mounting holes 241, which are spaced apart along the length of the loading beam 240. The number of mounting holes 241 is greater than the number of first loading sections 230. Each first loading section 230 is fixedly connected to the loading beam 240 via a corresponding mounting hole 241, allowing for adjustment of the spacing between adjacent first loading sections 230 to meet the various seating design requirements of the four-person bobsleigh. Of course, the number of mounting holes 241 can also be equal to the number of first loading sections 230, but in this case, the spacing between adjacent first loading sections 230 is not adjustable.
[0042] In other embodiments, the loading beam 240 may not be provided with the above-mentioned mounting hole 241 . In this case, each first loading portion 230 is welded to the loading beam 240 , but is not limited to the above-mentioned embodiment.
[0043] like Figure 5 and Figure 7 As shown, the first loading unit 230 includes a first connecting shaft 231, a first lower rotating frame 232, a first loading platform 233, and a first pad 234. The first connecting shaft 231, the first lower rotating frame 232, the first loading platform 233, and the first pad 234 are sequentially connected from top to bottom. The first pad 234 is configured to contact the seat stress point of the snowmobile 400, while the first connecting shaft 231 is configured to connect to the mounting hole 241 of the loading beam 240. The first pad 234 can be a rubber block. The area of the rubber block is designed based on ergonomics to ensure that the load and pressure applied to the vehicle body during loading are closer to actual operating conditions. Furthermore, the provision of the rubber block prevents localized stress concentration caused by contact between metal parts and the vehicle body, ensuring more uniform loading and preventing damage. Furthermore, the first lower rotating frame 232 has a rotation axis extending in the left-right direction to reduce uneven loading caused by deformation of the vehicle body, the first pad 234, the vehicle frame, and other components during loading.
[0044] like Figure 2 and Figure 6 As shown, the second loading module 300 includes a second bracket 310, a second actuating mechanism 320, and a second loading unit 330. The second bracket 310 is fixedly connected to the platform, and the second actuating mechanism 320 is mounted on the second bracket 310. The second actuating mechanism 320 drives the second loading unit 330 to move in the up and down directions. It should be noted that the three seat load points of the four-man bobsleigh are respectively applied downward by the three first loading units 230 of the first loading module 200, while the last seat load point of the four-man bobsleigh is applied downward by the second loading unit 330 of the second loading module 300.
[0045] Specifically, the structure of the second actuating mechanism 320 is consistent with that of the first actuating mechanism 220, namely, the second actuating mechanism 320 includes a second linear actuator 321, a second guide sleeve 322, and a second guide rod 323. The second linear actuator 321 includes, but is not limited to, a screw-slider linear drive device, a gear rack linear drive device, a pulley synchronous belt linear drive device, a pneumatic cylinder, a hydraulic cylinder, an electric push rod, or a linear motor. In this embodiment, the second linear actuator 321 can be a hydraulic cylinder. The second guide sleeve 322 can be a linear bearing having a second guide hole arranged in the vertical direction. The second guide rod 323 can be an optical axis. The second guide sleeve 322 is fixedly connected to the second bracket 310, and the second guide rod 323 is slidably connected to the second guide hole of the second guide sleeve 322, allowing the second guide rod 323 to slide along the extension direction of the second guide hole. The second linear actuator 321 is connected to the second loading part 330 through the second guide rod 323. When the second linear actuator 321 extends its second telescopic part 324 downward, the second telescopic part 324 first drives the second guide rod 323 to extend downward along the guide direction of the second guide sleeve 322. Then, the second guide rod 323 transmits the downward force of the second linear actuator 321 to the second loading part 330, thereby applying a downward load to the last seat force point of the four-man bobsleigh to simulate the force conditions when the athletes are riding.
[0046] Furthermore, to resist the bending moment generated by the second linear actuator 321, two second guide sleeves 322 and two second guide rods 323 are provided. The two second guide sleeves 322 are fixedly connected to the second bracket 310 in the front-to-back direction, and the two second guide rods 323 are slidably connected to the two second guide sleeves 322. The ends of the two second guide rods 323 are connected to the second upper rib 325 and the second lower rib 326, respectively. To prevent damage to the second linear actuator 321 caused by lateral forces generated by deformation, the lower end of the second linear actuator 321 is connected to the second upper rib 325 via a second upper rotating frame 327. The second upper rotating frame 327 has a rotation axis arranged in the left-right direction.
[0047] Furthermore, the structure of the second loading unit 330 is identical to that of the first loading unit 230 , namely, it includes a second connecting shaft 331, a second lower rotating frame 332, a second loading platform 333, and a second pad 334. The second connecting shaft 331, the second lower rotating frame 332, the second loading platform 333, and the second pad 334 are sequentially connected from top to bottom. The second pad 334 is configured to contact the seat stress point of the snowmobile 400, while the second connecting shaft 331 is configured to connect to the second lower rib 326 of the second actuating mechanism 320. The second pad 334 can be a rubber block. The area of the rubber block is designed based on ergonomics to ensure that the load and pressure applied to the vehicle body during loading are closer to actual operating conditions. Furthermore, the provision of the rubber block prevents localized stress concentration caused by contact between metal parts and the vehicle body, ensuring a more even load distribution and preventing damage. In addition, the second lower rotating frame 332 has a rotating axis arranged along the left-right direction to reduce uneven force caused by deformation of the vehicle body, the second pad 334, the frame, etc. during the loading process.
[0048] With the above structure, before conducting the test, the front ice blades are first removed from the two front ice blade racks 430 of the snowmobile 400, and then an empty front ice blade rack 430 is aligned with the multiple ice blade connecting holes 113 of the left front ice blade clamp 110, and the other empty front ice blade rack 430 is aligned with the multiple ice blade connecting holes 113 of the right front ice blade clamp 120, and the two are connected in pairs using connecting parts, so that the two front ice blades of the snowmobile are replaced by the left front ice blade clamp 110 and the right front ice blade clamp 120 respectively, and the two rear ice blades of the snowmobile 400 are slidably set in the slide grooves 132 of the left rear ice blade slide 130 and the right rear ice blade slide 140 respectively. At this time, the two rear ice blades of the snowmobile 400 can be displaced in the front and rear directions relative to the two front ice blades, and the two left ice blades and the two right ice blades of the snowmobile 400 produce left and right displacements, and then the positions of the first loading part 230 and the second loading part 330 are set according to the seat force point of the snowmobile 400. During the test, the first linear actuator 221 drove the loading beam 240 downward, while the second linear actuator 321 drove the second loading section 330 downward. This caused the four-man bobsleigh to be subjected to pressure from the three first loading sections 230 and the second loading section 330 simultaneously, simulating the forces exerted on the bobsleigh by an athlete. During this process, the rear and front blades of the bobsleigh 400 displaced in the fore-aft direction, while the left and right blades displaced in the left-right direction. This ensured that the forces exerted on the bobsleigh 400 more closely resembled actual conditions, preventing the generation of internal stress.
[0049] In other embodiments, for a two-man bobsleigh, since the two seat force points are located on different planes, the bobsleigh load test bench still needs to be equipped with a first loading module 200 and a second loading module 300. In this embodiment, since the first loading module 200 is only equipped with a first loading portion 230, the first loading module 200 does not need to be equipped with a loading beam 240. In this case, the structure of the first loading module 200 is consistent with that of the second loading module 300.
[0050] The present invention also provides a snowmobile 400 that is load tested using the aforementioned snowmobile load test bench. The snowmobile 400 includes two-man and four-man snowmobiles. When the test object is a two-man snowmobile, the first loading module 200 of the snowmobile load test bench is equipped with a first loading section 230, while the second loading module 300 of the snowmobile load test bench is equipped with a second loading section 330. When the test object is a four-man snowmobile, the first loading module 200 of the snowmobile load test bench is equipped with a loading beam 240 and three first loading sections 230, with the three first loading sections 230 spaced apart along the length of the loading beam 240. The second loading module 300 of the snowmobile load test bench is equipped with a second loading section 330.
[0051] In order to improve the versatility of the bobsleigh load test bench, when the test object is a two-man bobsleigh, the loading beam 240 of the first loading module 200 is only connected to one first loading part 230; when the test object is a four-man bobsleigh, the loading beam 240 of the first loading module 200 is connected to three first loading parts 230.
[0052] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. Snowmobile load test bench, characterized by: include: Stand; An ice blade module, comprising a left ice blade assembly and a right ice blade assembly, the left ice blade assembly comprising a left front ice blade clamp and a left rear ice blade slide, the left front ice blade clamp being located in front of the left rear ice blade slide, the right ice blade assembly comprising a right front ice blade clamp and a right rear ice blade slide, the right front ice blade clamp being located in front of the right rear ice blade slide, one of the left ice blade assembly and the right ice blade assembly being fixedly connected to the platform, and the other being slidably connected to the platform along the left-right direction, the left front ice blade clamp and the right front ice blade clamp both being provided with a plurality of ice blade connecting holes, the left rear ice blade slide and the right rear ice blade slide both being provided with a slide groove arranged along the front-to-back direction, the slide groove being used to support the rear ice blade of the bobsleigh; The first loading module includes a first bracket, a first actuating mechanism and a first loading part. The first bracket is fixedly connected to the platform, the first actuating mechanism is installed on the first bracket, and the first actuating mechanism drives the first loading part to move in the up and down directions, so that the first loading part has a downward loading force.
2. The snow vehicle load test bench according to claim 1, characterized in that: The first loading module further includes a loading beam, a plurality of first loading parts are provided, and the plurality of first loading parts are spaced apart along the length direction of the loading beam, and the first actuating mechanism drives the loading beam to move in the up and down direction.
3. The snow vehicle load test bench according to claim 2, characterized in that: The first actuating mechanism includes a first linear actuator, a first guide sleeve and a first guide rod. The first guide sleeve is fixedly connected to the first bracket, the first guide rod is slidably connected to the first guide sleeve, and the first linear actuator is connected to the loading beam through the first guide rod.
4. The snowmobile load test bench according to claim 3, characterized in that: There are two first guide sleeves and two first guide rods respectively, and the two first guide rods are connected to the two first guide sleeves respectively in a one-to-one manner. The two ends of the two first guide rods are respectively connected to the first upper rib plate and the first lower rib plate, the first upper rib plate is connected to the first linear actuator, and the first lower rib plate is connected to the loading beam.
5. The snow vehicle load test bench according to claim 4, characterized in that: A first upper rotating frame is connected between the first linear actuator and the first upper rib plate. The first upper rotating frame is provided with a rotating axis arranged along a left-right direction.
6. The snow vehicle load test bench according to claim 2, characterized in that: The loading beam is provided with a plurality of mounting holes, which are spaced apart along the length direction of the loading beam. The mounting holes are used to connect the first loading parts, and the number of the mounting holes is not less than the number of the first loading parts.
7. The snow vehicle load test bench according to claim 1, characterized in that: The snowmobile load test bench also includes a second loading module, which includes a second bracket, a second actuating mechanism and a second loading part. The second bracket is fixedly connected to the stand, and the second actuating mechanism is installed on the second bracket. The second actuating mechanism drives the second loading part to move in the up and down directions, so that the second loading part has a downward loading force.
8. The snow vehicle load test bench according to claim 1 or 2, characterized in that: The first loading part includes a first connecting shaft, a first lower rotating frame, a first loading platform and a first cushion block connected in sequence, the first connecting shaft is connected to the first actuating mechanism, and the first lower rotating frame has a rotating axis arranged in the left and right direction.
9. The snow vehicle load test bench according to claim 1, characterized in that: The left front ice skate clamp and the right front ice skate clamp are both provided with waist-shaped holes, and the waist-shaped holes are arranged along the front-back direction.
10. A snowmobile, characterized in that: The snowmobile is load tested using the snowmobile load test bench described in any one of claims 1 to 9.