A columnar product testing platform

Abstract

A columnar product testing platform relates to the technical field of avionics product testing. The present invention can complete various prescribed actions required for columnar product testing, reliably fix the columnar product on the console, and has three degrees of freedom of motion: pitch, azimuth, and roll. Each degree of freedom has a locking device and an adjustment mechanism, and can move horizontally along the longitudinal axis. The columnar product can be quickly and conveniently adjusted to the required posture and position, and the relevant parameters of a certain type of columnar product can be tested. The present invention is safe, convenient, and fast to operate, and can very smoothly cooperate with the testing equipment to complete various testing tasks. It has high work efficiency and strong reliability, and meets the use requirements. The present invention has a simple structure and operation, high adjustment accuracy, small space occupation, no need for servo control, and low cost for testing columnar product testing platforms. The present invention is designed based on this demand and can complete relevant testing experiments without using computer systems or servo mechanisms.

Description

Technical Field

[0001] The present invention relates to the technical field of aviation electronic product testing, and in particular to a columnar product testing platform. Background Art

[0002] The columnar product testing platform is primarily used in conjunction with test equipment to test relevant parameters of columnar products. During columnar product testing, the platform must not only meet testing requirements but also be reliable and easy to operate. It also needs to be able to adjust the vertical, horizontal, and angular position of the columnar product.

[0003] Current testing platforms for cylindrical products typically employ guide rails, lead screw mechanisms, speed reduction mechanisms, and stepper or servo motors in conjunction with a control computer to control the three degrees of freedom (Pitch, Azimuth, and Roll) required for the cylindrical product on the test platform. This allows for adjustment of the product's position and orientation, and allows for parameter testing of the cylindrical product in conjunction with test equipment. These platforms are suitable for assembly line testing, automation, and high-volume testing. However, due to their use of control computers and servo systems, they present complex overall structures, large footprints, and high costs.

[0004] In order to develop a certain columnar product, it is necessary to test its performance on a laboratory test platform. Since the columnar product is produced in single pieces and small batches during the development stage, it is necessary to use a columnar product testing platform with a simple structure, high adjustment accuracy, small space occupation, no need for servo control, and low cost for testing.

[0005] Therefore, how to provide a columnar product testing platform with a simple structure, high adjustment accuracy, small space occupation and low cost has become a long-term technical demand of those skilled in the art. Summary of the Invention

[0006] In order to overcome the shortcomings of the background technology, the present invention provides a columnar product testing platform. The present invention can complete various prescribed actions required for columnar product testing, reliably fix the columnar product on the console, and has three degrees of freedom of pitch, azimuth, and roll. Each degree of freedom has a locking device and an adjustment mechanism, and can move horizontally along the longitudinal axis. The columnar product can be easily and quickly adjusted to the desired posture and position, and the relevant parameters of a certain type of columnar product can be tested.

[0007] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution:

[0008] A columnar product testing platform comprises a front support frame, a rolling motion mechanism, a platform, an azimuth motion mechanism, a guide rail, a guide rail mounting platform and a platform body, wherein an azimuth motion mechanism is provided on the top of the platform body, a guide rail mounting platform is provided on the top of the azimuth motion mechanism, at least two parallel guide rails are provided on the top of the guide rail mounting platform, sliders on the two guide rails are respectively connected to the platform, a front support frame and a rolling motion mechanism are provided on the top of the platform, a horizontal movement limit assembly for limiting the sliding of the platform is provided on the platform to the right of the rolling motion mechanism, and a columnar product fixing hole on the front support frame is coaxially arranged with the columnar product fixing hole on the rolling motion mechanism.

[0009] The columnar product testing platform, the front support frame includes an upper left support, an upper right support, an upper movable support, a ball bearing, a lower movable support, an adjusting screw, a floating support, a connecting rod, a guide column, an adjusting screw, a translation limit block, a lower half support and a live knot bolt. The lower half support is fixedly connected to the top of the platform by bolts, and an upwardly concave groove is provided on the lower end surface of the lower half support, and plugs are respectively provided at the left and right ends of the groove. Adjustment screws are respectively threaded in the screw holes on the two plugs, and a translation limit block that moves left and right is provided in the groove between the two plugs. The ends of the adjusting screws respectively abut against the left and right ends of the translation limit block, and at least two guide column lower limit holes are spaced apart on the upper side of the translation limit block. A guide column is inserted into each guide column lower limit hole, and the upper end of each guide column is respectively inserted into the guide column upper limit hole on the lower side of the floating support. The lower part of the floating support is hinged to the middle part of the connecting rod through a rotating pin, the left end of the connecting rod is hinged to the lower half support through a fixed pin, the right end of the connecting rod is suspended and hinged to the lower end of the adjusting screw through a pin, and the arc at the upper end of the floating support At least three ball bearings are arranged at intervals on the profile surface, and the outer edge surface of each ball bearing is higher than the arc surface of the upper end of the floating support. An upper left support and an upper right support are arranged above the lower support. The left end of the upper left support is connected to the left end of the lower support by a live bolt, the right end of the upper left support is hinged to the left end of the upper right support by a pin, and the right end of the upper right support is hinged to the upper end of the adjusting screw and the right end of the lower support by a pin. At least one ball bearing is respectively arranged on the inner edge surface of the upper left support and the upper right support, and the outer edge of each ball bearing The surfaces are respectively higher than the inner arc surfaces of the upper left support and the upper right support. A circular hole is formed in the middle of the lower support, the upper left support and the upper right support after being combined. The upper movable support and the lower movable support are arranged in the circular hole. The left ends of the upper movable support and the lower movable support are hinged by a turn pin, and the right ends of the upper movable support and the lower movable support are connected by a connecting screw to form a circular movable support. The outer edge surface of the circular movable support is in contact with multiple ball bearings, and the columnar product to be tested is inserted into the inner hole in the middle of the circular movable support.

[0010] The columnar product testing platform is provided with an annular groove on the end face of the circular movable support, and a plurality of positioning holes are provided at intervals at the bottom of the annular groove. An anti-rotation pin is provided in one of the positioning holes, and the outer end of the anti-rotation pin is connected to the lower half support; a cross-roller linear guide is provided under the lower half support, and the cross-roller linear guide is connected to the platform, and a fine-tuning limit assembly for limiting the movement of the lower half support is provided on the bottom plate of the lower half support.

[0011] The columnar product testing platform, the rolling motion mechanism includes a short connecting sleeve, a hollow rotating shaft, a roller bearing, a locking pin mounting plate, a long connecting sleeve, a support and a rotation positioning assembly, two roller bearings are provided in the mounting hole at the upper end of the support, and the two open ends of the mounting hole are fixed with a bearing cover A and a bearing cover B by screws A respectively. The bearing cover A and the bearing cover B press the two roller bearings into the mounting hole, and a hollow rotating shaft is inserted into the inner ring of the two roller bearings. A spacer is provided between the outer edge surface of the hollow rotating shaft and the inner edge surfaces of the bearing cover A and the bearing cover B respectively. A positioning shoulder is provided at one end of the outer edge surface of the hollow rotating shaft, and one side of the positioning shoulder corresponds to the shaft. The cover B and the other side of the positioning shoulder are connected to the long connecting sleeve by bolts. A plurality of anti-rotation positioning grooves are arranged at intervals on the outer edge surface of the positioning shoulder. An external thread is provided at the other end of the outer edge surface of the hollow rotating shaft. At least one locking nut is sleeved on the external thread. The locking nut cooperates with the positioning shoulder to prevent the hollow rotating shaft from moving in the inner rings of the two roller bearings. The end of the hollow rotating shaft outside the locking nut is connected to the short connecting sleeve by a screw B. A locking pin mounting plate is provided on the side of the support, and a rotation positioning assembly is provided on the locking pin mounting plate. The end of the locking pin in the rotation positioning assembly corresponds to the anti-rotation positioning groove on the positioning shoulder of the hollow rotating shaft.

[0012] The cylindrical product testing platform, the rotation positioning assembly includes an indexing positioning pin assembly housing, a spring, a locking pin, a handle, a handle mounting pin, a limit pin, a sliding sleeve and a connecting bolt, the indexing positioning pin assembly housing is fixed to the locking pin mounting plate by connecting bolts, a three-step stepped hole with a larger opening at the lower end and a smaller opening at the upper end is provided in the middle of the indexing positioning pin assembly housing, a sliding sleeve is inserted in the inner hole with a larger aperture at the lower end, and a locking pin is inserted in the inner hole of the sliding sleeve. A guide boss is provided on the outer edge surface of the locking pin, and the outer edge surface of the guide boss contacts the inner hole wall of the sliding sleeve. A spring is sleeved on the outer edge surface of the locking pin above the guide boss, and the lower end head of the spring abuts against the upper end surface of the guide boss. The upper end of the spring abuts the upper end surface of the middle aperture of the stepped hole in the indexing locating pin assembly housing, and a downwardly concave groove is provided on the upper end surface of the indexing locating pin assembly housing, and the two end ends of the groove respectively extend to the outer edge surface of the indexing locating pin assembly housing, and two short grooves are provided at the bottom of the groove, and the two short grooves are arranged at 180° and are respectively arranged at the two end ends of the groove. A limit pin is provided in the groove, and the limit pin moves in the groove and the short groove. The limit pin is arranged on the outer edge surface of the locking pin, and a handle is provided on the outer edge surface of the locking pin above the indexing locating pin assembly housing through the handle mounting pin, and the locking pin is driven by the handle to extend and retract around the indexing locating pin assembly housing.

[0013] The columnar product testing platform, the azimuth motion mechanism is a slewing bearing.

[0014] The described columnar product testing platform, the guide rail mounting platform includes an upper mounting plate, a frame, a lower mounting plate, a guide rail mounting platform rotation positioning assembly, a guide rail mounting platform rotation positioning assembly mounting plate, connecting screws, lifting eye screws, handrails, L-shaped limit plates and L-shaped limit plate connecting screws are respectively provided on the upper and lower surfaces of the frame. The upper mounting plate and the lower mounting plate are respectively provided with arc bosses extending outward on both sides of the middle of the lower mounting plate, and a plurality of bolt connecting holes are respectively provided on the two arc bosses, and connecting bolts connected to the azimuth motion mechanism are respectively inserted in each bolt connecting hole. One of the arc bosses is fixed with a guide rail mounting platform rotation positioning assembly mounting plate by a connecting screw, and a guide rail mounting platform rotation positioning assembly mounting plate is provided with a guide rail mounting platform rotation positioning assembly mounting plate, and lifting eye screws are respectively provided at the four corners above the upper mounting plate, and an armrest is provided at the right end of the frame, and an L-shaped limit plate is provided under the right side of the lower mounting plate through the L-shaped limit plate connecting screw.

[0015] The columnar product testing platform has four corners below the platform body provided with screw adjustment mechanisms, and an indexing positioning pin assembly is provided on the right side above the platform body.

[0016] The columnar product testing platform has a counterweight provided at the bottom of the platform.

[0017] The columnar product testing platform, the spiral adjustment mechanism includes a screw, an upper connecting plate, a screw and a connecting seat, the lower end of the screw is provided with a ball head, the upper part of the ball head is sleeved with the upper connecting plate, the lower part of the ball head is inserted into the arc groove of the connecting seat, and the connecting seat and the upper connecting plate are fixed together by screws.

[0018] By adopting the above technical solution, the present invention has the following advantages:

[0019] The present invention can complete various prescribed actions required for testing columnar products, reliably fix the columnar products on the console, and has three degrees of freedom of pitch, azimuth, and roll. Each degree of freedom has a locking device and an adjustment mechanism, and can move horizontally along the longitudinal axis. The columnar product can be quickly and conveniently adjusted to the required posture and position, and the relevant parameters of a certain type of columnar product can be tested. The present invention is safe, convenient, and fast to operate, and can cooperate with the testing equipment very smoothly to complete various testing tasks. It has high work efficiency and strong reliability, and meets the use requirements. The present invention has a simple structure and operation, high adjustment accuracy, small space occupation, no need for servo control, and low cost for testing columnar product testing platforms. The present invention is designed based on this demand and can complete related testing experiments without using computer systems and servo mechanisms (servo motors, reduction mechanisms, feedback measuring elements, etc.). BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the front support frame of the present invention;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure;

[0023] Figure 4 Schematic diagram of the three-dimensional structure of the rolling motion mechanism of the present invention;

[0024] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure;

[0025] Figure 6 Schematic diagram of the structure of the rotary positioning assembly in the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the azimuth motion mechanism of the present invention;

[0027] Figure 8 Schematic diagram of the three-dimensional structure of the guide rail mounting platform of the present invention;

[0028] Figure 9 for Figure 8Schematic diagram of the main structure;

[0029] Figure 10 for Figure 8 Schematic diagram of the left view structure;

[0030] Figure 11 Schematic diagram of the three-dimensional structure of the platform body in the present invention;

[0031] Figure 12 Schematic diagram of the structure of the spiral adjustment mechanism of the present invention;

[0032] In the figure: 1, front support frame; 101, upper left support; 102, upper right support; 103, upper movable support; 104, ball bearing; 105, lower movable support; 106, adjusting screw; 107, floating support; 108, connecting rod; 109, guide column; 110, adjusting screw; 111, translation limit block; 112, lower support; 113, live hitch bolt; 114, anti-rotation pin; 115, rotating pin; 116, fixed pin ; 117, cross roller linear guide; 118, connecting pin; 119, rotating pin; 120, small positioning pin; 121, joint screw; 122, positioning hole; 2, rolling motion mechanism; 201, screw A; 202, bearing cover A; 203, locking nut; 204, short connecting sleeve; 205, screw B; 206, hollow rotating shaft; 207, roller bearing; 208, bearing cover B; 209, locking pin mounting plate; 210, indexing positioning pin assembly Housing; 211, spring; 212, locking pin; 213, handle; 214, spacer; 215, long connecting sleeve; 216, support; 217, handle mounting pin; 218, limit pin; 219, sliding sleeve; 220, connecting bolt; 3, platform; 4, azimuth motion mechanism; 401, positioning component mounting hole; 5, guide rail; 6, guide rail mounting platform; 601, upper mounting plate; 602, frame; 603, lower mounting plate; 604, guide rail mounting platform rotation Rotation positioning assembly; 605, guide rail mounting table rotation positioning assembly mounting plate; 606, connecting screws; 607, lifting eye screws; 608, handrail; 609, L-shaped limit plate; 610, L-shaped limit plate connecting screws; 7, table body; 8, spiral adjustment mechanism; 801, screw; 802, upper connecting plate; 803, screw; 804, connecting seat; 9, counterweight; 10, horizontal movement limit assembly; 11, fine-tuning limit assembly; 12, indexing positioning pin assembly. DETAILED DESCRIPTION

[0033] The present invention can be explained in more detail by the following examples, but the present invention is not limited to the following examples;

[0034] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or location relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] The present invention is designed based on the requirements of the background technology (pure mechanical test platform), and can complete relevant test experiments without using a computer system or a servo mechanism (servo motor, reduction mechanism, feedback measurement element, etc.).

[0037] The present invention is a mechanical structure with the advantages of high adjustment accuracy, small space occupation and low cost.

[0038] Combined with attachment Figures 1 to 12 , a columnar product testing platform according to the present invention, such as Figure 1 As shown, it includes a front support frame 1, a rolling motion mechanism 2, a platform 3, an azimuth motion mechanism 4, a guide rail 5, a guide rail mounting platform 6 and a platform body 7. The azimuth motion mechanism 4 is provided on the platform body 7, and the guide rail mounting platform 6 is provided on the azimuth motion mechanism 4. At least two parallel guide rails 5 are provided on the guide rail mounting platform 6, and the sliders on the two guide rails 5 are respectively connected to the platform 3. The front support frame 1 and the rolling motion mechanism 2 are provided on the platform 3. A horizontal movement limit assembly 10 for limiting the sliding of the platform 3 is provided on the platform 3 on the right side of the rolling motion mechanism 2. The columnar product fixing hole on the front support frame 1 is coaxially arranged with the columnar product fixing hole on the rolling motion mechanism 2.

[0039] When implementing, if Figure 2 、 3As shown, the front support frame 1 includes an upper left support 101, an upper right support 102, an upper movable support 103, a ball bearing 104, a lower movable support 105, an adjusting screw 106, a floating support 107, a connecting rod 108, a guide column 109, an adjusting screw 110, a translation limit block 111, a lower half support 112 and a live knot bolt 113. The lower half support 112 is fixedly connected to the upper surface of the platform 3 by bolts. An upwardly concave groove is provided on the lower end surface of the lower half support 112, and plugs are provided at the left and right ends of the groove respectively. The screw holes on the two plugs are respectively threaded with adjusting screws 110, and a translation limit block 111 that moves left and right is provided in the groove between the two plugs. The ends of the two adjusting screws 110 respectively abut the left and right ends of the translation limit block 111. At both ends, at least two guide column lower limit holes are provided on the upper side of the translation limit block 111, and a guide column 109 is inserted into each guide column lower limit hole. The upper end of each guide column 109 is inserted into the guide column upper limit hole on the lower side of the floating support 107. The lower part of the floating support 107 is hinged to the middle part of the connecting rod 108 through a rotating pin 115. The left end of the connecting rod 108 is hinged to the lower half support 112 through a fixed pin 116. The right end of the connecting rod 108 is suspended and hinged to the lower end of the adjusting screw 106 through a pin. At least three ball bearings 104 are provided on the arc surface of the upper end of the floating support 107, and the outer edge surface of each ball bearing 104 is higher than the arc surface of the upper end of the floating support 107. When implemented, Figure 3 As shown, the inner ring of the ball bearing 104 is fixed to the floating support 107 through the bearing fixing shaft; an upper left support 101 and an upper right support 102 are provided above the lower support 112, the left end of the upper left support 101 is connected to the left end of the lower support 112 by a live bolt 113, the right end of the upper left support 101 is hinged to the left end of the upper right support 102 by a connecting pin 118, and the right end of the upper right support 102 is hinged to the upper end of the adjusting screw 106 and the right end of the lower support 112 by a pin shaft, at least one ball bearing 104 is respectively provided on the inner edge surface of the upper left support 101 and the upper right support 102, and the outer edge surface of each ball bearing 104 is higher than the inner arc surface of the upper left support 101 and the upper right support 102. When implemented, as shown in FIG. Figure 3As shown, the inner ring of the ball bearing 104 is fixed to the upper left support 101 and the upper right support 102 through the bearing fixing shaft; the lower support 112, the upper left support 101 and the upper right support 102 are combined to form a circular hole in the middle, and the upper movable support 103 and the lower movable support 105 are provided in the circular hole. The left ends of the upper movable support 103 and the lower movable support 105 are hinged by a rotating pin 119, and the right ends of the upper movable support 103 and the lower movable support 105 are connected by a connecting screw 121. Finally, a circular movable support is formed. During implementation, in order to ensure the accuracy of the upper movable support 103 and the lower movable support 105 when they are connected by the coupling screws 121, a small positioning pin 120 is set on the upper movable support 103 or the lower movable support 105, and then a small positioning pin hole corresponding to the small positioning pin 120 is set on the lower movable support 105 or the upper movable support 103; the outer edge surface of the circular movable support is in contact with multiple ball bearings 104, and the columnar product to be tested is inserted into the inner hole in the middle of the circular movable support.

[0040] During implementation, an annular groove is provided on the end face of the annular movable support, and a plurality of positioning holes 122 are provided at intervals on the bottom of the annular groove. An anti-rotation pin 114 is provided in one of the positioning holes 122, and the outer end of the anti-rotation pin 114 is connected to the lower half support 112; a cross-roller linear guide 117 is provided under the lower half support 112, and the cross-roller linear guide 117 is connected to the platform 3, and a fine-tuning limit assembly 11 for limiting the movement of the lower half support 112 is provided on the bottom plate of the lower half support 112.

[0041] When implementing, if Figure 1 、 3 As shown, in order to achieve fine adjustment of the position of the front support frame 1, a cross roller linear guide 117 is provided between the bottom of the lower half support 112 and the top of the platform 3 (during implementation, the cross roller linear guide 117 is a standard part and can be directly purchased and used, such as the VR series cross roller guide produced by Shanghai Benming Precision Machinery Equipment Co., Ltd.). The provision of the cross roller linear guide 117 enables the front support frame 1 to achieve a small range of movement relative to the platform 3, which is convenient for the installation of the columnar product to be tested. After the cross roller linear guide 117 is provided between the bottom of the lower half support 112 and the top of the platform 3, it is necessary to provide a fine adjustment limit assembly 11 on the bottom plate of the lower half support 112. After the front support frame 1 is adjusted to the predetermined position, the position of the front support frame 1 is locked by the fine adjustment limit assembly 11 (the specific structure of the fine adjustment limit assembly 11 is consistent with the structure of the rotation positioning assembly on the rolling motion mechanism 2, and will not be described in detail here).

[0042] Further, if Figure 1 、 4As shown in Figure 5, the rolling motion mechanism 2 includes a short connecting sleeve 204, a hollow rotating shaft 206, a roller bearing 207, a locking pin mounting plate 209, a long connecting sleeve 215, a support 216 and a rotation positioning assembly. Two roller bearings 207 are provided in the mounting hole at the upper end of the support 216. A bearing cover A202 and a bearing cover B208 are fixed to the two open ends of the mounting hole by screws A201 respectively. The bearing cover A202 and the bearing cover B208 press the two roller bearings 207 into the mounting hole. The hollow rotating shaft 206 is inserted into the inner rings of the two roller bearings 207. A spacer sleeve 214 is provided between the outer edge surface of the hollow rotating shaft 206 and the inner edge surfaces of the bearing cover A202 and the bearing cover B208 respectively. A positioning shoulder is provided at one end of the outer edge surface of the hollow rotating shaft 206, and one side of the positioning shoulder corresponds to the bearing cover B208 The other side of the positioning shoulder is connected to the long connecting sleeve 215 by bolts, and a plurality of anti-rotation positioning grooves are arranged at intervals on the outer edge surface of the positioning shoulder. An external thread is provided at the other end of the outer edge surface of the hollow rotating shaft 206, and at least one locking nut 203 is sleeved on the external thread. The locking nut 203 cooperates with the positioning shoulder to prevent the hollow rotating shaft 206 from moving in the inner rings of the two roller bearings 207. During implementation, a protective cover is provided on the periphery of the locking nut 203, and the end of the hollow rotating shaft 206 outside the locking nut 203 is connected to the short connecting sleeve 204 by a screw B205. A locking pin mounting plate 209 is provided on the side of the support 216, and a rotation positioning assembly is provided on the locking pin mounting plate 209. The end of the locking pin 212 in the rotation positioning assembly corresponds to the anti-rotation positioning groove on the positioning shoulder of the hollow rotating shaft 206.

[0043] During implementation, when the columnar product to be tested is connected to the long connecting sleeve 215, a plurality of sets of wedge pin assemblies are arranged between the outer edge surface of the columnar product to be tested and the inner edge surface of the inner hole of the long connecting sleeve 215, and the columnar product to be tested is fixed in the inner hole of the long connecting sleeve 215 by the plurality of sets of wedge pin assemblies. During implementation, the wedge pin assembly includes a positive wedge (thin sheet, one side of the long side is inclined about +3°), a reverse wedge (thin sheet, one side of the long side is inclined -3°, which is offset after cooperating with the positive wedge) and a straight wedge (thin sheet). The +3° and -3° long side oblique edges are in contact with each other and can slide relative to each other, so that the width of the positive wedge, reverse wedge and straight wedge can change after being fitted, which is used to connect the columnar product to be tested and the long connecting sleeve 215.

[0044] When implementing, combine Figure 1 、 4As shown in Figures 5 and 6, the hollow rotating shaft 206 can rotate in the mounting hole at the upper end of the support 216 through the roller bearing 207. The upper end of the support 216 is a mounting hole. The mounting hole on the support 216 is sequentially installed with a spacer 214, two roller bearings 207, and a spacer 214. The bearing caps A202 and bearing caps B208 are respectively fixed to the end faces of the mounting hole of the support 216 with screws A201 at both ends. The roller bearings 207 and the inner holes of the spacer 214 are installed in the hollow rotating shaft 206. The hollow rotating shaft 206 is stepped and hollow. The large end of the hollow rotating shaft 206 supports the spacer 214. The small end of the hollow rotating shaft 206 is locked with two locking nuts 203 slotted on the outer edge surfaces. The large end of the hollow rotating shaft 206 is screwed with a long connecting sleeve 215, and the small end of the hollow rotating shaft 206 is screwed with a short connecting sleeve 204.

[0045] When implementing, if Figure 4 、 5 As shown in , 6, the rotation positioning assembly includes an indexing positioning pin assembly housing 210, a spring 211, a locking pin 212, a handle 213, a handle mounting pin 217, a limit pin 218, a sliding sleeve 219 and a connecting bolt 220. The indexing positioning pin assembly housing 210 is fixed to the locking pin mounting plate 209 by the connecting bolt 220. A three-step stepped hole with a larger opening at the lower end and a smaller opening at the upper end is provided in the middle of the indexing positioning pin assembly housing 210. A sliding sleeve 219 is inserted into the inner hole with a larger aperture at the lower end, and a locking pin 212 is inserted into the inner hole of the sliding sleeve 219. A guide boss is provided on the outer edge surface of the locking pin 212, and the outer edge surface of the guide boss contacts the inner hole wall of the sliding sleeve 219. A spring 211 is sleeved on the outer edge surface of the locking pin 212 above the guide boss, and the lower end of the spring 211 abuts against the inner hole wall of the sliding sleeve 219. The upper end surface of the guide boss is connected, and the upper end of the spring 211 abuts the upper end surface of the middle aperture of the stepped hole in the indexing positioning pin assembly housing 210. A downwardly concave groove is provided on the upper end surface of the indexing positioning pin assembly housing 210, and the two end ends of the groove respectively extend to the outer edge surface of the indexing positioning pin assembly housing 210. Two short grooves are provided at the bottom of the groove, and the two short grooves are arranged at 180° and are respectively arranged at the two end ends of the groove. A limit pin 218 is provided in the groove, and the limit pin 218 moves in the groove and the short groove. The limit pin 218 is provided on the outer edge surface of the locking pin 212, and a handle 213 is provided on the outer edge surface of the locking pin 212 above the indexing positioning pin assembly housing 210 through the handle mounting pin 217. The locking pin 212 is driven by the handle 213 to extend and retract around the indexing positioning pin assembly housing 210.

[0046] When implementing, combine Figure 4 、 5As shown in Figures 6 and 7, a limiting hole and a mounting threaded hole are respectively provided on the right side of the support 216. The locking pin mounting plate 209 is fixed in the mounting threaded hole with screws, and the indexing positioning pin assembly housing 210 is fixed in an inner hole on one side of the locking pin mounting plate 209 by screws. The inner hole on the locking pin mounting plate 209 is coaxial with the limiting hole provided on the right side of the support 216. The locking pin 212 can enter the inner hole of the locking pin mounting plate 209 and the limiting hole on the right side of the support 216 at the same time under the action of the spring 211, so that the hollow rotating shaft 206 cannot rotate. The right end surface of the indexing and positioning pin assembly housing 210 is provided with two sets of grooves (two in each set). The right end of the locking pin 212 is provided with a handle 213 and a limit pin 218. The limit pin 218 is radially inserted into a small hole on the right side of the locking pin 212. The limit pin 218 on the locking pin 212 cooperates with the long groove and short groove on the right end surface of the indexing and positioning pin assembly housing 210 to achieve the locking and releasing of the hollow rotating shaft 206 by the locking pin 212. (In practice, the indexing and positioning pin assembly housing 210 is provided with a long groove and a short groove intersecting at 90 degrees.)

[0047] Further, if Figure 1 As shown, a horizontal movement limit assembly 10 is provided on the right side of the rolling motion mechanism 2 on the platform 3. When the platform 3 slides to the predetermined position, the platform 3 is locked by the horizontal movement limit assembly 10 to prevent the platform 3 from being displaced during the working process. During implementation, when the platform 3 slides to the predetermined position, the limit pin on the horizontal movement limit assembly 10 moves down and is inserted into the limit hole on the upper mounting plate 601 in the guide rail mounting table 6 (the specific structure of the horizontal movement limit assembly 10 is consistent with the structure of the rotation positioning assembly on the rolling motion mechanism 2, and will not be described in detail here). For the structure of the limit hole on the upper mounting plate 601, please refer to the attached Figure 8 Or a clamping disc is installed at the lower end of the limit pin on the horizontal movement limit assembly 10. When the platform 3 slides to the predetermined position, the limit pin is spirally moved by screwing the handle, driving the limit pin to move downward. At this time, the clamping disc contacts the upper mounting plate 601 in the guide rail mounting table 6 and achieves positioning through friction, thereby positioning the platform 3.

[0048] Further, if Figure 7 As shown, the azimuth motion mechanism 4 is a slewing bearing.

[0049] When implementing, if Figure 7As shown, the azimuth motion mechanism 4 can be configured as a bearing structure, consisting of inner and outer rings. The inner ring can only rotate relative to the outer ring. A plurality of positioning assembly mounting holes 401 are spaced apart on the outer ring. These positioning assembly mounting holes 401 are used to connect to positioning pins in the guide rail mounting platform rotation positioning assembly 604. Specifically, the positioning pins in the guide rail mounting platform rotation positioning assembly 604 are lowered and inserted into the positioning assembly mounting holes 401, thereby positioning the guide rail mounting platform 6 and preventing rotation. Furthermore, the lower surface of the outer ring of the azimuth motion mechanism 4 is screwed to corresponding threaded holes in the platform body 7 via screws distributed around the end surface. The inner ring of the azimuth motion mechanism 4 is screwed to corresponding threaded holes in the guide rail mounting platform 6 via screws distributed around the end surface, enabling relative rotational motion (azimuth motion) of the guide rail mounting platform 6 relative to the platform body 7. Since the structure of the azimuth motion mechanism 4 is conventional in the art, a detailed description thereof will not be provided here.

[0050] Further, if Figure 8 、 9 As shown in FIG. 10 , the guide rail mounting platform 6 includes an upper mounting plate 601, a frame 602, a lower mounting plate 603, a guide rail mounting platform rotation positioning assembly 604, a guide rail mounting platform rotation positioning assembly mounting plate 605, connecting screws 606, eyebolts 607, and handrails 608. An L-shaped limiting plate 609 and an L-shaped limiting plate connecting screw 610 are respectively provided on the upper and lower surfaces of the skeleton 602. An upper mounting plate 601 and a lower mounting plate 603 are respectively provided on the two sides of the middle part of the lower mounting plate 603. A plurality of bolt connecting holes are respectively provided on the two curved bosses. Connecting bolts connected to the azimuth motion mechanism 4 are respectively inserted into each bolt connecting hole. A guide rail mounting platform rotation positioning assembly mounting plate 605 is fixed to one or two of the curved bosses by connecting screws 606. A guide rail mounting platform rotation positioning assembly 604 is provided on one or two of the guide rail mounting platform rotation positioning assembly mounting plates 605. Eye screws 607 are respectively provided on the four corners of the upper mounting plate 601. A handrail 608 is provided on the right end of the skeleton 602. An L-shaped limiting plate 609 is provided on the lower right side of the lower mounting plate 603 through an L-shaped limiting plate connecting screw 610.

[0051] During implementation, the upper mounting plate 601, the frame 602, and the lower mounting plate 603 are welded together. The central portion of the lower mounting plate 603 is a circular structure for connection to the azimuth motion mechanism 4. The lower mounting plate 603 is connected to the guide rail mounting platform rotation positioning assembly mounting plate 605 via connecting screws 606. The guide rail mounting platform rotation positioning assembly mounting plate 605 is provided with a guide rail mounting platform rotation positioning assembly 604. The positioning pins in the guide rail mounting platform rotation positioning assembly 604 are lowered and inserted into the positioning assembly mounting holes 401 on the outer ring of the azimuth motion mechanism 4 to achieve positioning of the guide rail mounting platform 6, so that the guide rail mounting platform 6 cannot rotate relative to the platform body 7. (The specific structure of the guide rail mounting platform rotation positioning assembly 604 is consistent with the structure of the rotation positioning assembly provided on the rolling motion mechanism 2 and will not be repeated here.) An L-shaped limit plate 609 is fixed to the lower portion of the lower mounting plate 603 via L-shaped limit plate connecting screws 610.

[0052] Further, if Figure 11 As shown, screw adjustment mechanisms 8 are installed at the four corners of the bottom of the platform 7, and an indexing positioning pin assembly 12 is installed on the right side of the top of the platform 7. During implementation, a counterweight 9 is installed at the bottom of the platform 7. In implementation, the counterweight 9 is two steel plates that lower the center of gravity of the entire test platform.

[0053] Further, if Figure 11 As shown, the right side of the platform 7 is equipped with an indexing positioning pin assembly 12 (the structure of the indexing positioning pin assembly 12 is consistent with the structure of the rotation positioning assembly provided on the rolling motion mechanism 2, and will not be described here). Figure 1 、 8 As shown in Figures 1 and 11, the structures of the fine-tuning limit assembly 11 arranged on the front support frame 1, the guide rail mounting platform rotation positioning assembly 604 arranged on the guide rail mounting platform 6, and the horizontal movement limit assembly 10 arranged on the platform 3 are all consistent with the structure of the rotation positioning assembly arranged on the rolling motion mechanism 2, and are not repeated here. The locking pin on the indexing positioning pin assembly 12 enters the groove on the L-shaped limit plate 609 to realize the accurate positioning of the guide rail mounting platform 6 relative to the table body 7.

[0054] Further, if Figure 12 As shown, the spiral adjustment mechanism 8 includes a screw 801, an upper connecting plate 802, a screw 803 and a connecting seat 804. The lower end of the screw 801 is provided with a ball head, the upper part of the ball head is sleeved with the upper connecting plate 802, and the lower part of the ball head is inserted into the arc groove of the connecting seat 804. The connecting seat 804 and the upper connecting plate 802 are fixed together by screws 803.

[0055] During operation, four screw adjustment mechanisms 8 form the pitch adjustment mechanism. The operator uses an adjustable wrench to turn screws 801, adjusting the four screw adjustment mechanisms to achieve the entire workbench's elevation and pitch adjustments. Once the testbench's pitch and height are adjusted, the four nuts are used to lock the testbench's position. During pitch adjustment, a leveling housing, one of the testbench's accessories, is used to simulate the product's position and state on the testbench, allowing for adjustments to be made.

[0056] The columnar product to be tested in the present invention is in the shape of a hollow shell. During the test, one end of the columnar product to be tested is positioned and fixed by the long connecting sleeve 215 on the rolling motion mechanism 2, and the columnar product to be tested is clamped in the inner holes of the upper movable support 103 and the lower movable support 105 (such as Figure 1 As shown, platform 3 is capable of moderate axial movement along guide rail 5. The front support frame 1 and rolling motion mechanism 2 jointly restrict the degrees of freedom of the cylindrical product to be tested, except for rolling. The front support frame 1 and rolling motion mechanism 2 are mounted on platform 3, which is capable of moving along guide rail 5. Guide rail 5 is mounted on guide rail mounting platform 6. An azimuth motion mechanism 4 is installed between guide rail mounting platform 6 and platform body 7, enabling rotational movement of guide rail mounting platform 6 relative to platform body 7. A counterweight 9 is mounted on platform body 7.

[0057] During the test, the columnar product is concentrically fixed on the long connecting sleeve 215 of the rolling motion mechanism 2, and the outer surface of the columnar product is clamped in the inner holes of the upper movable support 103 and the lower movable support 105 of the front support frame 1 (such as Figure 1 As shown, platform 3 can move axially along guide rail 5 to a certain extent. The rolling motion mechanism 2 cannot rotate after being positioned using the rotary positioning assembly. When fine-tuning the horizontal position of the columnar product is required, the adjustment screw 110 can be adjusted to cause the translational limit block 111 to move horizontally. Adjusting screw 106 causes connecting rod 108 and floating support 107 to move up and down, further moving the upper and lower movable supports 103 and 105, thereby adjusting the height of the columnar product. By pushing platform 3, the columnar product is displaced a large distance horizontally along the linear guide rail. When the columnar product needs to rotate horizontally, it drives the guide rail mounting platform 6 to rotate around the azimuth motion mechanism 4, and is positioned using the guide rail mounting platform rotary positioning assembly 604. The four-corner screw adjustment mechanism 8 below the platform 7 allows for fine-tuning of the horizontal and height positions of the columnar product. The lower counterweight 9 of the platform 7 is composed of two steel plates, which lower the center of gravity of the entire test platform. The platform body 7 adopts a rigid truss structure, on which are mounted guide rails for platform movement and fixing devices for lifting the platform, which can reliably lock the height to be lifted and lowered, and has sufficient rigidity to maintain the stability of the platform body.

[0058] When the present invention is implemented, the specific structure of the front support frame 1 is as follows Figure 2 、 3As shown, translational stopper 111 is located within a groove in lower support 112 and can move slightly left and right within the groove. The translational stopper 111 is locked in its horizontal position within the groove by moving the adjustment screw 110 left and right. Two guide posts 109 are positioned within the two inner holes in the middle of translational stopper 111, allowing for vertical movement within the inner holes. The left end of the connecting rod 108 is hinged to the inner hole on the left side of the lower support 112 through a fixed pin 116, the middle part of the connecting rod 108 is hinged to the floating support 107 through a rotating pin 115, and the right end of the connecting rod 108 is hinged to the adjusting screw 106 through a cylindrical pin; the adjusting screw 106 consists of two outer studs with opposite rotation directions, which are connected by long nuts with inner threads with opposite rotation directions at both ends. When the long nut is rotated, the extension or shortening of the adjusting screw 106 is completed; the lower end of the adjusting screw 106 is hinged to the connecting rod 108, and the upper end of the adjusting screw 106 is hinged to the outer convex inner hole on the upper right side of the lower support 112 through a cylindrical pin.

[0059] Furthermore, by manually adjusting the extension or contraction of screw rod 106, the floating support 107 is able to move up and down, limited by guide column 109 and driven by the cylindrical pin in the middle of connecting rod 108. Floating support 107 is equipped with three bearings, which are tangential to lower movable support 105. Lower movable support 105 and upper movable support 103 are mutually rotatable via the cylindrical pin on the left. A cylindrical product to be tested can be placed in the middle of upper and lower movable supports 103 and 105, and connected by screws on the right side.

[0060] The left side of the lower support 112 is connected to the upper left support 101 by a live bolt 113 and a nut, and the lower right side of the upper right support 102 is hinged to the lower support 112 by a cylindrical pin; a bearing is provided in the middle groove of the upper left support 101 and the upper right support 102, and the right side of the upper left support 101 and the left side of the upper right support 102 are hinged by a connecting pin 118.

[0061] The hinge connection here is one of the innovations of the present invention: the conventional upper half support is an integrated design, and two bearings are set at the same position. However, since the right side of the integral upper half support is hinged with the lower half support 112, when the left side is tightened with the live bolt 113 and the nut, the two bearings of the integral upper half support can only achieve tangency between one bearing and the upper movable support 103 (three points determine a circle) due to processing errors. However, this design can overcome the above shortcomings by dividing the integral upper half support into upper and lower (or left and right) halves, and achieve Figure 3The five bearings shown are all tangent to the upper movable support 103 and the lower movable support 105, and the rotation accuracy is improved. That is, after the upper movable support 103, the lower movable support 105, and the floating support 107 are adjusted left and right by the left and right adjustment screws 110 and the translation limit block 111, and after they are adjusted up and down by the adjustment screw 106 and the connecting rod 108, since the upper left support 101 and the upper right support 102 are composed of two halves that are hinged and can rotate relative to each other (the upper left support 101 and the upper right support 102 are an integrated structure in conventional designs), it is ensured that after left and right adjustment and up and down adjustment, the upper movable support 103 can still be in good contact with the upper bearings of the upper left support 101 and the upper right support 102, thereby ensuring the rotation accuracy of the upper movable support 103 and the lower movable support 105 in clamping the columnar product. During implementation, as Figure 3 As shown, the upper movable support 103 and the lower movable support 105 are connected into one body by the arrangement of the rotation pin 119, the small positioning pin 120 and the coupling screw 121 and can clamp the columnar product. At the same time, a plurality of positioning holes 122 are provided for cooperating with the anti-rotation pin shaft 114, that is, a plurality of positioning holes 122 are respectively provided on the upper movable support 103 and the lower movable support 105, as shown in FIG. Figure 3 As shown, six positioning holes 122 may be provided, and the six positioning holes 122 are spaced 60 degrees apart.

[0062] Furthermore, the specific structure of the platform 7 is as follows Figure 11 As shown, the platform 7 adopts a rigid truss structure, and a spiral adjustment mechanism 8 for adjusting the height of the platform 7 is installed below. The spiral adjustment mechanism 8 can make the platform 7 have a certain amount of lifting and lowering movement, and can reliably lock the lifting height, and has sufficient rigidity to maintain the stability of the platform; an azimuth movement mechanism 4 for rotating the guide rail mounting platform 6 is installed above.

[0063] When implementing, if Figure 1 、 12 As shown, four screw adjustment mechanisms 8 are provided. These four screw adjustment mechanisms 8 combine to form a pitch motion mechanism. During operation, the four screw adjustment mechanisms 8 are adjusted by turning screws 801 with an adjustable wrench to achieve elevation and pitch adjustment of the entire platform 7. After the pitch attitude and height position of the platform 7 are adjusted, the test platform's attitude is locked using four nuts. During pitch adjustment, the test platform's standard specimen (a standard specimen used for initial position calibration) is used to level the housing to simulate the position and state of a columnar product on the test platform, allowing for adjustments to the test platform's position.

[0064] The structure of the rolling motion mechanism 2 is as follows: Figure 4 、 5As shown in Figures 6 and 7, rolling mechanism 2 is equipped with two tapered roller bearings for the rolling of cylindrical products. Three sets of wedge pins (evenly spaced) are used to connect with the cylindrical product connectors to complete the installation, connection, and positioning of the cylindrical product. The rolling positioning pins are used to achieve the required position indexing during cylindrical product testing. The entire rolling mechanism can roll the cylindrical product 360° along its X-axis, with a rolling indexing angle of 45°, and can be reliably and accurately positioned using the positioning pins.

[0065] The structure of the front support frame 1 is as follows Figure 2 、 3 As shown, the front support frame 1 is an adjustable bracket, and the adjusting screw 106 is used to fine-tune the Y-axis support position of the columnar product. The two adjustment screws 110 at the lower part of the adjusting screw 106 are used for fine-tuning the Z-axis direction of the columnar product, which is convenient for the initial installation of the columnar product and for auxiliary support of the columnar product after installation; the bottom of the front support frame 1 is designed with a cross-roller V-shaped rolling linear short guide rail, which can enable the columnar product to drive the front support frame to make a short-distance precise translation along the X-axis, which is convenient for the rapid docking of the columnar product and the connecting parts, and avoids the interference between the columnar product and the front support frame to cause mechanical damage.

[0066] Three bearings are installed on the lower support 112, and the lower movable support 105 can move on the bearings. In order to improve the contact characteristics of the upper movable support 103, the upper support is divided into two halves, namely the upper left support 101 and the upper right support 102 (each of which is provided with a bearing), which are connected in the middle with a rotating pin, so that the upper movable support 103 can reliably contact the two bearings on the upper left support 101 and the upper right support 102, thereby improving the rotation accuracy.

[0067] The structure of the azimuth motion mechanism 4 is as follows Figure 7 As shown, the azimuth motion mechanism 4 is mainly a slewing bearing. By pushing the guide rail mounting platform 6, the columnar product is rotated ±90° around the central axis of the platform 7 to complete the installation of the columnar product and the required test orientation. The azimuth motion mechanism 4 is designed with an azimuth positioning and locking device.

[0068] During use, the columnar product, front support frame 1, rolling motion mechanism 2, and platform 3 can move horizontally along the columnar product's X-axis on guide rail 5 over long distances, enabling tasks such as posture adjustment and testing of the columnar product. The columnar product can be locked relative to guide rail 5 at any position within its range of motion. Guide rail 5 utilizes a four-way equal load type rolling linear guide pair, offering high precision and reliable operation.

[0069] In order to ensure long-term and reliable use of the platform 3, multiple lubrication points can be set on the platform 3.

[0070] It should be understood that parts not elaborated in detail in this specification belong to the prior art.

[0071] It should be understood that the above description of the implementation examples is relatively detailed and cannot be regarded as limiting the scope of protection of the patent of the present invention. Under the guidance of the present invention, ordinary technicians in this field can also make substitutions or modifications without departing from the scope of protection of the claims of the present invention, which all fall within the scope of protection of the present invention. The scope of protection requested by the present invention shall be based on the attached claims.

Claims

1. A columnar product testing platform, comprising a front support frame (1), a rolling motion mechanism (2), a platform (3), an azimuth motion mechanism (4), a guide rail (5), a guide rail mounting platform (6) and a platform body (7), characterized in that: An azimuth motion mechanism (4) is provided on the platform (7), a guide rail mounting platform (6) is provided on the azimuth motion mechanism (4), at least two parallel guide rails (5) are provided on the guide rail mounting platform (6), the sliders on the two guide rails (5) are connected to the platform (3) respectively, a front support frame (1) and a rolling motion mechanism (2) are provided on the platform (3), a horizontal movement limiting assembly (10) for limiting the sliding of the platform (3) is provided on the platform (3) on the right side of the rolling motion mechanism (2), the columnar product fixing hole on the front support frame (1) is coaxially arranged with the columnar product fixing hole on the rolling motion mechanism (2); the front support frame (1) includes an upper left support (101), An upper right support (102), an upper movable support (103), a ball bearing (104), a lower movable support (105), an adjusting screw (106), a floating support (107), a connecting rod (108), a guide column (109), an adjusting screw (110), a translation limit block (111), a lower half support (112) and a live bolt (113), wherein the lower half support (112) is fixedly connected to the upper surface of the platform (3) by bolts, a groove concave upward is provided on the lower end surface of the lower half support (112), plugs are respectively provided at the left and right ends of the groove, the screw holes on the two plugs are respectively threaded with the adjusting screws (110), and a translation limit block (111) movable left and right is provided in the groove between the two plugs. The ends of the two adjusting screws (110) respectively abut against the left and right ends of the translation limit block (111). At least two guide column lower limit holes are provided on the upper side of the translation limit block (111). A guide column (109) is inserted into each guide column lower limit hole. The upper end of each guide column (109) is inserted into the guide column upper limit hole on the lower side of the floating support (107). The lower part of the floating support (107) is hinged to the middle part of the connecting rod (108) through a rotating pin (115). The left end of the connecting rod (108) is hinged to the lower half support (112) through a fixed pin (116). The right end of the connecting rod (108) is suspended and connected to the adjusting screw (106) through a pin. ), at least three ball bearings (104) are arranged at intervals on the arc surface of the upper end of the floating support (107), and the outer edge surface of each ball bearing (104) is higher than the arc surface of the upper end of the floating support (107), and an upper left support (101) and an upper right support (102) are provided above the lower half support (112), the left end of the upper left support (101) is connected to the left end of the lower half support (112) through a live bolt (113), the right end of the upper left support (101) is hinged to the left end of the upper right support (102) through a pin, and the right end of the upper right support (102) is hinged to the upper end of the adjusting screw (106) and the right end of the lower half support (112) through a pin.At least one ball bearing (104) is respectively provided on the inner edge surface of the upper left support (101) and the upper right support (102), and the outer edge surface of each ball bearing (104) is respectively higher than the inner arc surface of the upper left support (101) and the upper right support (102). After the lower support (112), the upper left support (101) and the upper right support (102) are combined, a circular hole is formed in the middle part, and an upper movable support (103) and a lower movable support (105) are provided in the circular hole. The left ends of the upper movable support (103) and the lower movable support (105) are hinged by a rotating pin (119), and the right ends of the upper movable support (103) and the lower movable support (105) are connected by a coupling screw (121) to form an annular movable support. The outer edge surface of the annular movable support is in contact with the plurality of ball bearings (104), and the columnar product to be tested is inserted into the inner hole in the middle part of the annular movable support. , 2. The columnar product testing platform according to claim 1, characterized in that: An annular groove is provided on the end surface of the annular movable support, and a plurality of positioning holes (122) are provided at intervals at the bottom of the annular groove. An anti-rotation pin shaft (114) is provided in one of the positioning holes (122), and the outer end of the anti-rotation pin shaft (114) is connected to the lower half support (112); a cross roller linear guide (117) is provided below the lower half support (112), and the cross roller linear guide (117) is connected to the platform (3), and a fine adjustment limit assembly (11) for limiting the movement of the lower half support (112) is provided on the bottom plate of the lower half support (112).

3. The columnar product testing platform according to claim 1, characterized in that: The rolling motion mechanism (2) comprises a short connecting sleeve (204), a hollow rotating shaft (206), a roller bearing (207), a locking pin mounting plate (209), a long connecting sleeve (215), a support (216) and a rotation positioning assembly, wherein two roller bearings (207) are provided in a mounting hole at the upper end of the support (216), and a bearing cover A (202) and a bearing cover B (207) are fixed to the two open ends of the mounting hole by screws A (201) respectively. 08), the bearing cover A (202) and the bearing cover B (208) press the two roller bearings (207) into the mounting hole, and a hollow rotating shaft (206) is inserted into the inner ring of the two roller bearings (207), and a spacer (214) is provided between the outer edge surface of the hollow rotating shaft (206) and the inner edge surface of the bearing cover A (202) and the bearing cover B (208), respectively. A positioning shoulder is provided at one end of the outer edge surface of the hollow rotating shaft (206). One side of the shaft shoulder corresponds to the bearing cover B (208), and the other side of the positioning shaft shoulder is connected to the long connecting sleeve (215) by bolts. A plurality of anti-rotation positioning grooves are arranged at intervals on the outer edge surface of the positioning shaft shoulder. An external thread is provided at the other end of the outer edge surface of the hollow rotating shaft (206), and at least one locking nut (203) is sleeved on the external thread. The locking nut (203) cooperates with the positioning shaft shoulder to prevent the hollow rotating shaft (206) from moving in the inner rings of the two roller bearings (207). The end of the hollow rotating shaft (206) outside the locking nut (203) is connected to the short connecting sleeve (204) by a screw B (205). A locking pin mounting plate (209) is provided on the side of the support (216), and a rotation positioning assembly is provided on the locking pin mounting plate (209). The end of the locking pin (212) in the rotation positioning assembly corresponds to the anti-rotation positioning groove on the positioning shaft shoulder of the hollow rotating shaft (206).

4. The columnar product testing platform according to claim 3, characterized in that: The rotary positioning assembly comprises a graduated positioning pin assembly housing (210), a spring (211), a locking pin (212), a handle (213), a handle mounting pin (217), a limit pin (218), a sliding sleeve (219) and a connecting bolt (220). The graduated positioning pin assembly housing (210) is fixed to the locking pin mounting plate (209) by the connecting bolt (220). A three-stepped hole with a larger opening at the lower end and a smaller opening at the upper end is provided in the middle of the graduated positioning pin assembly housing (210). A sliding sleeve (219) is inserted into the inner hole with a larger aperture at the lower end. A locking pin (212) is inserted into the inner hole of the sliding sleeve (219). A guide boss is provided on the outer edge surface of the locking pin (212). The outer edge surface of the guide boss contacts the inner hole wall of the sliding sleeve (219). A spring (211) is sleeved on the outer edge surface of the locking pin (212) above the guide boss. The lower end of the spring (211) is provided with a guide boss. The end abuts against the upper end surface of the guide boss, the upper end of the spring (211) abuts against the upper end surface of the middle diameter of the stepped hole in the indexing positioning pin assembly housing (210), and a downwardly concave groove is provided on the upper end surface of the indexing positioning pin assembly housing (210), and the two ends of the groove extend to the outer edge surface of the indexing positioning pin assembly housing (210), and two short grooves are provided at the bottom of the groove, and the two short grooves are set at 180 degrees and are respectively set at the two ends of the groove. A limit pin (218) is provided in the groove, and the limit pin (218) moves in the groove and the short groove. The limit pin (218) is provided on the outer edge surface of the locking pin (212). A handle (213) is provided on the outer edge surface of the locking pin (212) above the indexing positioning pin assembly housing (210) through a handle mounting pin (217). The locking pin (212) is driven by the handle (213) to extend and retract around the indexing positioning pin assembly housing (210).

5. The columnar product testing platform according to claim 1, characterized in that: The azimuth motion mechanism (4) is a slewing bearing.

6. The columnar product testing platform according to claim 1, characterized in that: The guide rail mounting platform (6) includes an upper mounting plate (601), a frame (602), a lower mounting plate (603), a guide rail mounting platform rotation positioning assembly (604), a guide rail mounting platform rotation positioning assembly mounting plate (605), connecting screws (606), eyebolts (607), handrails (608), an L-shaped limit plate (609) and an L-shaped limit plate connecting screw (610). An upper mounting plate (601) and a lower mounting plate (603) are respectively provided on the upper and lower surfaces of the frame (602). Both sides of the middle of the lower mounting plate (603) are respectively provided with arc-shaped bosses extending outwards. A plurality of bolt connection holes are respectively provided on the two arc-shaped bosses. A connecting bolt connected to the azimuth motion mechanism (4) is respectively inserted into each bolt connection hole. A connecting screw is connected to one of the arc-shaped bosses through a connecting screw. (606) is fixed with a guide rail mounting platform rotation positioning assembly mounting plate (605), a guide rail mounting platform rotation positioning assembly (604) is provided on the guide rail mounting platform rotation positioning assembly mounting plate (605), eye screws (607) are provided at the four corners above the upper mounting plate (601), a handrail (608) is provided at the right end of the frame (602), and an L-shaped limit plate (609) is provided below the right side of the lower mounting plate (603) through an L-shaped limit plate connecting screw (610).

7. The columnar product testing platform according to claim 1, characterized in that: The four corners below the platform (7) are respectively provided with screw adjustment mechanisms (8), and a graduation positioning pin assembly (12) is provided on the right side above the platform (7).

8. The columnar product testing platform according to claim 7, characterized in that: A counterweight (9) is provided at the lower portion of the platform (7).

9. The columnar product testing platform according to claim 7, characterized in that: The spiral adjustment mechanism (8) comprises a screw rod (801), an upper connecting plate (802), a screw (803) and a connecting seat (804); the lower end of the screw rod (801) is provided with a ball head; the upper portion of the ball head is sleeved with the upper connecting plate (802); the lower portion of the ball head is inserted into the arc groove of the connecting seat (804); the connecting seat (804) and the upper connecting plate (802) are fixed together by the screw (803).

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