Test bench for testing rigidity of tubular column
By designing a test bench for tubular column stiffness and utilizing arc-shaped motion components to achieve rapid switching between vertical and horizontal directions, the problem of existing technologies being limited to single-direction testing is solved, thereby improving test accuracy and efficiency.
Patent Information
- Application Number
- CN202420790182.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-04-17
AI Technical Summary
Existing testing fixtures can only perform string stiffness and holding force tests in a single direction, and cannot quickly switch between vertical and horizontal directions, resulting in wasted time and insufficient test accuracy.
A test bench for testing the stiffness of tubular columns was designed, comprising a worktable, slide rail, gantry frame, locking mechanism, adjustment mechanism, arc motion component, and movable fixture. The arc motion component enables rapid switching to the horizontal state after a vertical test, supporting tests in both vertical and horizontal directions.
It enables rapid switching between vertical and horizontal testing, improving testing accuracy and efficiency while shortening testing time.
Smart Images
Figure CN222318451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe strings, in particular to a pipe string rigidity test bench. Background Art
[0002] As one of the key components of the steering transmission system of passenger cars, the column's stiffness, retention and other properties have an important impact on the safety, handling and driving comfort of the vehicle. Therefore, during the platform development and application of the column, it is necessary to verify the column's stiffness and retention test items.
[0003] Test items such as stiffness and holding force need to be verified in both horizontal and vertical directions.
[0004] At present, in the existing test tooling, tests can only be carried out in one direction. If tests are required in another direction, the tooling needs to be re-debugged, which not only wastes time, but also during the tooling test in the vertical direction, the tooling can be ensured to be in a vertical state through the effect of its own gravity. However, during the tooling test in the horizontal direction, it cannot be ensured that the tooling is in a horizontal state.
[0005] Therefore, it is necessary to design a pipe string stiffness test bench that can complete vertical and horizontal tests to meet the test requirements. Summary of the invention
[0006] The utility model aims to overcome the deficiencies of the prior art and provides a pipe string stiffness test bench which can complete tests in vertical and horizontal directions to meet test requirements.
[0007] In order to achieve the above-mentioned purpose, the utility model is a pipe column stiffness test bench, comprising a workbench, a slide, a gantry, a locking mechanism, an adjustment mechanism, an arc motion component, a movable tooling, and a pipe column clamp. The workbench is provided with a slide and an arc motion component, the arc motion component is located at the end of the slide, two gantries are slidably provided on the slide, the gantry and the slide are fixed by a locking mechanism, two driven components of the adjustment mechanism are respectively connected to the two gantries, a pipe column clamp is installed at the bottom of the crossbeam of the gantry, the pipe column clamp clamps the outer surface of the pipe column, the steering shaft of the pipe column is connected to one end of the movable tooling, and the other end of the movable tooling is connected to the arc motion component.
[0008] The arc motion assembly includes an arc bracket, a sliding bracket, an arc rack, a driving component, a gear, a follower bearing, a screw lift, and a stretching connecting rod. The arc bracket is fixed on a workbench, an arc rack is installed on one side of the arc bracket, the sliding bracket is slidably connected to the arc bracket, the driving component is installed on the sliding bracket, a gear is installed on the shaft of the driving component, the gear is meshed with the arc rack, a follower bearing is installed on the inner connecting block of the sliding bracket, the outer surface of the follower bearing is fitted with the surface of the arc bracket, a screw lift is installed at the bottom of the sliding bracket, the shaft of the screw lift is connected to one end of the stretching connecting rod, and the other end of the stretching connecting rod passes through the arc bracket and the sliding bracket and is connected to the movable tooling.
[0009] The slideway includes rails, wear-resistant strips, sliders, and baffles. A slidable slider is installed on each of the two rails. The slider is fixed to the bottom of the gantry. Wear-resistant strips are provided at the contact position between the rails and the sliders. Baffles are installed at both ends of the rails.
[0010] The adjustment mechanism includes a handwheel 1, a connecting shaft, two driving pulleys, a nut, a friction plate, a synchronous belt, two driven pulleys, and a screw rod. The handwheel 1 is connected to the end of the connecting shaft. The two driving pulleys are installed on the connecting shaft and are located on both sides of the connecting shaft boss. A nut is installed on the outer side of each driving pulley. A friction plate is provided on the contact surface between the nut and the driving pulley. The driving pulley and the corresponding driven pulley are connected by a synchronous belt. The two driven pulleys are respectively installed on the screw ends of the two screw rods, and the nuts of the screw rods are connected to the corresponding gantry.
[0011] The two ends of the connecting shaft and the two ends of the screw rod are respectively installed on the bearing seats, and the connecting shaft and the bearing seat, and the screw rod and the bearing seat are connected by bearings.
[0012] The locking mechanism includes a second hand wheel, a screw, a T-shaped clamping block, a fixed block, and a guide block. The fixed block and the guide block are installed at the bottom of the gantry. The middle part of the screw passes through the fixed block and the guide block. The two ends of the screw are respectively installed with a second hand wheel and a T-shaped clamping block. The T-shaped clamping block is inserted into the gap of the slideway or separated from the slideway.
[0013] An oil-free bushing is arranged between the screw rod and the fixed block, and a clearance fit is provided between the screw rod and the guide block.
[0014] The movable tooling comprises a tooling connecting rod, a tension sensor and an adapter. One end of the tooling connecting rod is sleeved outside the steering shaft of the column, and the other end of the tooling connecting rod is connected to the adapter by a tension sensor.
[0015] The adapter and the arc motion component are connected by a latch.
[0016] A side plate is installed on the other side of the arc-shaped bracket, and the side plate is fixed to the workbench.
[0017] A supporting plate is also provided inside the arc-shaped bracket.
[0018] Compared with the prior art, the utility model designs a pipe column stiffness test bench, which can be rotated to a horizontal state through an arc motion component after being assembled in the vertical direction, thereby realizing rapid switching of tests in the vertical and horizontal directions, improving the accuracy and efficiency of the tests, and shortening the test time. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a structural schematic diagram of the slideway of the utility model.
[0021] Figure 3 It is a partial schematic diagram of the adjustment mechanism of the utility model.
[0022] Figure 4 This is a top view of the adjustment mechanism, slideway and gantry of the utility model after being connected.
[0023] Figure 5 for Figure 4 AA section view.
[0024] Figure 6 It is a structural schematic diagram of the locking mechanism of the utility model.
[0025] Figure 7 It is a cross-sectional view of the connection between the locking mechanism and the slideway of the utility model.
[0026] Figure 8 It is a cross-sectional view of the connection between the movable tooling of the utility model and the pipe column.
[0027] Fig. 9 It is a structural schematic diagram of the arc motion component of the utility model.
[0028] Fig.10 It is a cross-sectional view of the arc motion component of the utility model.
[0029] Fig.11 for Fig.10 BB cross-sectional view.
[0030] Fig.12 It is a schematic diagram of the arc motion component of the utility model being adjusted to a horizontal position. DETAILED DESCRIPTION
[0031] The utility model is now further described with reference to the accompanying drawings.
[0032] See also Figure 1The utility model is a pipe column stiffness test bench, comprising a workbench, a slideway, a gantry, a locking mechanism, an adjustment mechanism, an arc motion component, a movable tooling, and a pipe column clamp. A slideway 2 and an arc motion component 6 are provided on the workbench 1. The arc motion component 6 is located at the end of the slideway 2. Two gantries 3 are slidably provided on the slideway 2. The gantry 3 and the slideway 2 are fixed by a locking mechanism 4. Two driven components of the adjustment mechanism 5 are respectively connected to the two gantries 3. A pipe column clamp 8 is installed at the bottom of the crossbeam of the gantry 3. The pipe column clamp 8 clamps the outer surface of the pipe column 9. The steering shaft of the pipe column 9 is connected to one end of the movable tooling 7, and the other end of the movable tooling 7 is connected to the arc motion component 6.
[0033] See also Figure 2 The slideway 2 includes a track 21, a wear-resistant strip 22, a slider 23, and a baffle 24. A slidable slider 23 is respectively installed on the two tracks 21. The slider 23 is fixed to the bottom of the gantry 3. A wear-resistant strip 22 is provided at the contact position between the track 21 and the slider 23. Baffles 24 are respectively installed at both ends of the track 21.
[0034] See also Figure 3~Figure 5 The adjustment mechanism 5 includes a handwheel 51, a connecting shaft 52, two driving pulleys 53, a nut 54, a friction plate 55, a synchronous belt 56, two driven pulleys 57, and a screw rod 58. The handwheel 51 is connected to the end of the connecting shaft 52. The two driving pulleys 53 are installed on the connecting shaft 52 and are located on both sides of the boss of the connecting shaft 52. A nut 54 is installed on the outer side of each driving pulley 53. A friction plate 55 is provided on the contact surface between the nut 54 and the driving pulley 53. The driving pulley 53 is connected to the corresponding driven pulley 57 by a synchronous belt 56. The two driven pulleys 57 are respectively installed on the screw ends of the two screw rods 58. The nuts of the screw rods 58 are connected to the corresponding gantry 3.
[0035] When the hand wheel 1 51 is rotated, the front and rear positions of the two gantries 3 or a single gantry 3 can be adjusted at the same time. When the position of the gantry 3 needs to be adjusted, the nut 54 on the side of the corresponding driving pulley 53 is tightened to compress the friction plate 55, so that the driving pulley 53 and the shaft shoulder are closely matched, so that the driving pulley 53 rotates with the connecting shaft 52, and the corresponding driven pulley 57 and the screw rod 58 are driven to rotate through the synchronous belt 56, and finally the position adjustment of the gantry 3 is achieved. When the position of the gantry 3 does not need to be adjusted, the nut 54 on the side of the corresponding driving pulley 53 is loosened to separate the driving pulley 53 from the shaft shoulder. At this time, the rotation of the connecting shaft 52 will not drive the driving pulley 53 to rotate, and the position adjustment of the gantry 3 cannot be achieved.
[0036] See also Figure 2 , Figure 3In order to facilitate installation, both ends of the connecting shaft 52 and both ends of the screw rod 58 are respectively installed on the bearing seat 59, and the connecting shaft 52 and the bearing seat 59, and the screw rod 58 and the bearing seat 59 are connected by bearings.
[0037] See also Figure 6 , Figure 7 The locking mechanism 4 includes a hand wheel 41, a screw 42, a T-shaped clamping block 43, a fixed block 44, and a guide block 45. The fixed block 44 and the guide block 45 are installed at the bottom of the gantry 3. The middle part of the screw 42 passes through the fixed block 44 and the guide block 45. The two ends of the screw 42 are respectively installed with a hand wheel 41 and a T-shaped clamping block 43. The T-shaped clamping block 43 is inserted into the gap of the slideway 2 or separated from the slideway 2.
[0038] An oil-free bushing 46 is provided between the screw 42 and the fixed block 44 , and a clearance fit is provided between the screw 42 and the guide block 45 to reduce friction and loss, thereby facilitating movement of the screw 42 in the fixed block 44 and the guide block 45 .
[0039] See also Figure 8 The movable tooling 7 includes a tooling connecting rod 71, a tension sensor 72, and an adapter 73. One end of the tooling connecting rod 71 is sleeved outside the steering shaft of the column 9, and the other end of the tooling connecting rod 71 is connected to the adapter 73 by the tension sensor 72. The adapter 73 is connected to the arc motion component 6 by a pin 10, so as to facilitate the installation and disassembly of the movable tooling 7 and the arc motion component 6.
[0040] See also Figure 9~Figure 11 The arc motion assembly 6 includes an arc bracket 61, a sliding bracket 63, an arc rack 64, a driving component 65, a gear 66, a follower bearing 67, a screw lift 68, and a stretching connecting rod 69. The arc bracket 61 is fixed on the workbench 1, and an arc rack 64 is installed on one side of the arc bracket 61. The sliding bracket 63 is slidably connected with the arc bracket 61. The driving component 65 is installed on the sliding bracket 63. A gear 66 is installed on the shaft of the driving component 65. The gear 66 meshes with the arc rack 64. A follower bearing 67 is installed on the inner connecting block 631 of the sliding bracket 63. The outer surface of the follower bearing 67 is in contact with the surface of the arc bracket 61. A screw lift 68 is installed at the bottom of the sliding bracket 63. The shaft of the screw lift 68 is connected to one end of the stretching connecting rod 69. The other end of the stretching connecting rod 69 passes through the arc bracket 61 and the sliding bracket 63 and is connected to the movable tooling 7.
[0041] A side plate 62 is installed on the other side of the arc-shaped bracket 61 , and the side plate 62 is fixed to the workbench 1 .
[0042] A support plate 610 is further provided inside the arc-shaped bracket 61 to limit the extreme position of the sliding bracket 63 and provide certain support for the sliding bracket 63 .
[0043] The driving component 65 is preferably a speed reducer, which can achieve self-locking.
[0044] The model of the screw lift 68 is HK2T.
[0045] When the utility model is working, the positions of the two gantries 3 on the slideway 2 are adjusted by the adjustment mechanism 5 to adapt to the length of the pipe column 9. After adjusting the position of the gantries 3, the locking mechanism 4 is used to fix the gantries 3 on the slideway 2 to prevent the gantries 3 from moving during the test. Then the pipe column 9 is installed on the pipe column fixture 8 and connected to the movable tooling 7. After the connection is completed, the pipe column 9 is loaded in the vertical direction through the screw lift 68. After the vertical direction is completed, it is adjusted to the horizontal position through the arc motion component 6, such as Fig.12 As shown, the pipe column 9 can be loaded in the horizontal direction by the screw lift 68.
[0046] The utility model designs a pipe column stiffness test bench, which can be rotated to a horizontal state through an arc motion component after being assembled in the vertical direction, thereby realizing rapid switching of tests in the vertical and horizontal directions, improving the accuracy and efficiency of the tests, and shortening the test time.
Claims
1. A pipe string stiffness test bench, comprising a workbench, a slideway, a gantry, a locking mechanism, an adjustment mechanism, an arc motion component, a movable tooling, and a pipe string fixture, characterized in that: A slideway (2) and an arc motion component (6) are provided on the workbench (1). The arc motion component (6) is located at the end of the slideway (2). Two gantries (3) are slidably provided on the slideway (2). The gantries (3) and the slideway (2) are fixed by a locking mechanism (4). Two driven components of the adjustment mechanism (5) are respectively connected to the two gantries (3). A pipe column clamp (8) is installed at the bottom of the crossbeam of the gantry (3). The pipe column clamp (8) clamps the outer surface of the pipe column (9). The steering shaft of the pipe column (9) is connected to one end of a movable tool (7). The other end of the movable tool (7) is connected to the arc motion component (6). The arc motion assembly (6) comprises an arc bracket (61), a sliding bracket (63), an arc rack (64), a driving component (65), a gear (66), a follower bearing (67), a screw lift (68), and a stretching connecting rod (69). The arc bracket (61) is fixed on the workbench (1). An arc rack (64) is installed on one side of the arc bracket (61). The sliding bracket (63) is slidably connected to the arc bracket (61). The driving component (65) is installed on the sliding bracket (63). A gear (66) is installed, and the gear (66) is meshed with the arc-shaped rack (64). A follower bearing (67) is installed on the inner connecting block (631) of the sliding bracket (63). The outer surface of the follower bearing (67) is in contact with the surface of the arc-shaped bracket (61). A screw lift (68) is installed at the bottom of the sliding bracket (63). The shaft of the screw lift (68) is connected to one end of a stretching connecting rod (69). The other end of the stretching connecting rod (69) passes through the arc-shaped bracket (61) and the sliding bracket (63) and is connected to the movable tooling (7).
2. A pipe string stiffness test bench according to claim 1, characterized in that: The slideway (2) comprises a track (21), a wear-resistant strip (22), a slider (23), and a baffle (24). A slidable slider (23) is respectively installed on the two tracks (21). The slider (23) is fixed to the bottom of the gantry (3). A wear-resistant strip (22) is provided at the contact position between the track (21) and the slider (23). Baffles (24) are respectively installed at both ends of the track (21).
3. The pipe string stiffness test bench according to claim 1, characterized in that: The adjustment mechanism (5) comprises a hand wheel (51), a connecting shaft (52), two driving pulleys (53), a nut (54), a friction plate (55), a synchronous belt (56), two driven pulleys (57), and a screw rod (58). The hand wheel (51) is connected to the end of the connecting shaft (52). The two driving pulleys (53) are mounted on the connecting shaft (52) and are located on both sides of the boss of the connecting shaft (52). A nut (54) is mounted on the outer side of each driving pulley (53). A friction plate (55) is provided on the contact surface between the nut (54) and the driving pulley (53). The driving pulley (53) and the corresponding driven pulley (57) are connected by a synchronous belt (56). The two driven pulleys (57) are respectively mounted on the screw ends of the two screw rods (58). The nuts of the screw rods (58) are connected to the corresponding gantry (3).
4. A pipe string stiffness test bench according to claim 3, characterized in that: The two ends of the connecting shaft (52) and the two ends of the screw rod (58) are respectively mounted on the bearing seat (59), and the connecting shaft (52) and the bearing seat (59), and the screw rod (58) and the bearing seat (59) are connected by bearings.
5. The pipe string stiffness test bench according to claim 1, characterized in that: The locking mechanism (4) comprises a second hand wheel (41), a screw (42), a T-shaped clamping block (43), a fixed block (44), and a guide block (45). The fixed block (44) and the guide block (45) are mounted at the bottom of the gantry (3). The middle of the screw (42) passes through the fixed block (44) and the guide block (45). The two ends of the screw (42) are respectively mounted with a second hand wheel (41) and a T-shaped clamping block (43). The T-shaped clamping block (43) is inserted into the gap of the slideway (2) or separated from the slideway (2).
6. A pipe string stiffness test bench according to claim 5, characterized in that: An oil-free bushing (46) is provided between the screw rod (42) and the fixed block (44), and a clearance fit is provided between the screw rod (42) and the guide block (45).
7. The pipe string stiffness test bench according to claim 1, characterized in that: The movable tooling (7) comprises a tooling connecting rod (71), a tension sensor (72), and an adapter (73); one end of the tooling connecting rod (71) is sleeved outside the steering shaft of the pipe column (9), and the other end of the tooling connecting rod (71) is connected to the adapter (73) by the tension sensor (72).
8. The pipe string stiffness test bench according to claim 7, characterized in that: The adapter (73) and the arc motion component (6) are connected by a latch (10).
9. The pipe string stiffness test bench according to claim 1, characterized in that: A side plate (62) is installed on the other side of the arc-shaped bracket (61), and the side plate (62) is fixed to the workbench (1).
10. The pipe string stiffness test bench according to claim 1, characterized in that: A support plate (610) is also provided inside the arc-shaped bracket (61).