A bridge engineering rubber bearing testing machine and its detection method

Abstract

The present invention provides a bridge engineering rubber bearing testing machine and its detection method, which relates to the technical field of engineering detection. This kind of bridge engineering rubber bearing testing machine includes a testing machine body and a rubber bearing body. The testing machine body includes a pressure head and a test bench. The pressure head is located above the test bench, and the rubber bearing body is located on the test bench. The rubber bearing body includes a pot-shaped base, a rubber block, and a top cover. The rubber block is located inside the pot-shaped base, and the top cover is installed on the top of the rubber block. Measuring scales are respectively installed on both sides of the test bench, and the measuring scales are clamped on the side walls on both sides of the test bench. Side supports are installed on the measuring scales. By setting side supports that can adjust the position of the rubber bearing, the rubber bearing is adjusted to an inclined state before the pressure head detects the rubber bearing, so as to facilitate testing the inclined compressive capacity of the rubber bearing.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering detection, and particularly relates to a rubber bearing testing machine for bridge engineering. Background Art

[0002] The rubber bearing in bridge engineering is an important structural component, mainly used to connect the upper structure and the lower structure of the bridge, and plays the roles of transferring loads, adapting to deformations, and damping vibrations. It can not only compensate for the horizontal displacement and rotation angle of the bridge caused by temperature changes, concrete shrinkage and creep, vehicle braking, etc. through the elastic deformation of the rubber, but also absorb energy relying on the damping performance of the rubber during earthquakes or vibrations, reducing the damage to the bridge structure. Therefore, the quality of the rubber bearing will directly affect the quality of the bridge.

[0003] In order to ensure the quality of the rubber bearing, it is necessary to conduct quality inspections on it before leaving the factory. In addition to the directly applied rubber blocks, many rubber bearings are composite structures containing rubber blocks. Many testing machines only detect the rubber blocks inside the rubber bearing, but the rubber bearing installed at the bottom of the bridge is an integral whole. Only detecting the internal rubber blocks is quite different from the actual application scenario. Currently, most testing machines usually do not detect the external bearing together, and during the testing process, they usually only detect the axial direction of the rubber block. In actual use, the rubber bearing will also be subjected to oblique forces, and the current common testing machines often involve less in this aspect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a rubber bearing testing machine for bridge engineering.

[0005] The technical solution adopted to solve the above technical problem is as follows:

[0006] A rubber bearing testing machine for bridge engineering includes a testing machine body and a rubber bearing body. The testing machine body includes a pressure head and a test bench. The pressure head is located above the test bench, and the rubber bearing body is located on the test bench. The rubber bearing body includes a pot-shaped base, a rubber block, and a top cover. The rubber block is located inside the pot-shaped base, and the top cover is installed on the top of the rubber block. Measuring rulers are respectively installed on both sides of the test bench, the measuring rulers are clamped on the side walls on both sides of the test bench, and side supports are installed on the measuring rulers;

[0007] The side support member includes a bottom plate, a bottom top plate, a top plate, a fixing plate, a top top plate, and a servo motor. The bottom plate is fixedly connected to the side wall of the bottom top plate. The bottom plate abuts against the side wall of the basin - type base. The fixing plate is movably inserted into the top plate. One end of the top plate away from the fixing plate is fixedly connected to the side wall of the top top plate. The top top plate abuts against the side wall of the top cover. The servo motor is installed between the fixing plate and the bottom plate, and the servo motor drives the top top plate to move;

[0008] Threaded holes are formed in both the side wall of the fixing plate and the side wall of the bottom plate. A fixing threaded rod is commonly thread - connected in the two threaded holes. A turning handle is installed at the top of the fixing threaded rod. Two fixing holes are formed in the top of the test bench, and the two fixing threaded rods are respectively inserted into the two fixing holes.

[0009] Through the above - mentioned technical solution, a side support member capable of adjusting the position of the rubber bearing is provided. Before the pressure head detects the rubber bearing, the rubber bearing is adjusted to an inclined state, so as to facilitate the test of the oblique compressive capacity of the rubber bearing.

[0010] Furthermore, the measuring scale includes an internal clamping scale and an external clamping scale. A movement groove is formed at one end of the external clamping scale facing the internal clamping scale. The internal clamping scale is slidably connected to the inside of the movement groove. Clamping plates are respectively fixedly arranged on the side walls of the mutually - facing ends of the internal clamping scale and the external clamping scale. The two clamping plates respectively abut against the two side walls of the test bench. Scale lines are provided on both the top of the internal clamping scale and the external clamping scale, and the side of the scale line close to the clamping plate is zero.

[0011] Through the above - mentioned technical solution, the internal clamping scale and the external clamping scale that can slide relative to each other can be conveniently installed on or removed from the test bench by sliding. At the same time, in the clamped state, by respectively aligning the specified positions of the left and right scale lines, it can be ensured that the rubber bearing body is placed in the middle position of the test bench, thus facilitating the experiment of the pressure head on the rubber bearing body.

[0012] Furthermore, a number of fixed vertical bars are installed at the top of one end of the internal clamping scale close to the external clamping scale. Two limiting rods are fixedly arranged at the top of one end of the external clamping scale close to the internal clamping scale. A limiting block matching the limiting rods is installed at the bottom of the bottom plate, and the limiting block is slidably connected to the limiting rods.

[0013] Through the above - mentioned technical solution, the limiting rods are T - shaped, and T - shaped holes are also provided at the top of the paired limiting blocks. Therefore, the limiting blocks can move along the limiting rods, thus facilitating the adjustment of the position of the bottom plate and facilitating the removal of the entire side support member from the test bench.

[0014] Furthermore, a moving threaded rod is fixedly arranged at the output end of the servo motor. A pushing plate is movably sleeved outside the moving threaded rod. The top of the pushing plate is fixedly connected to the bottom of the top plate. A short rod is fixedly connected to the bottom of the pushing plate. A short groove is formed in the top of the bottom plate. The short rod is slidably connected in the short groove. A clamping groove is formed in the side wall of the pushing plate. Two extension rods are fixedly arranged in the clamping groove. A clamping plate is movably sleeved on the two extension rods. The shape of the clamping plate is the same as that of the clamping groove. The clamping plate is magnetically connected to the clamping groove. The clamping plate is in threaded connection with the moving threaded rod.

[0015] Through the above technical solution, the operation of the servo motor will cause the moving threaded rod to rotate, which in turn causes the clamping plate to first move along the moving threaded rod and then snap into the clamping groove, and drive the pushing plate and the top plate to move along the moving threaded rod together, thereby pushing the top cover of the rubber bearing body, so that the rubber bearing body is in an inclined stress state.

[0016] Furthermore, a through hole is formed in the side wall of the bottom plate. A resisting block is arranged in the through hole. A plurality of clamping strips are fixedly arranged at the bottom of the resisting block. The plurality of clamping strips respectively abut against the side walls of a plurality of fixed vertical strips. Both the clamping strips and the fixed vertical strips are made of rubber.

[0017] Through the above technical solution, pressing down the resisting block will cause the clamping strips and the fixed vertical strips to be mutually extruded. Since their distributions are both relatively dense, the side walls of the clamping strips and the side walls of the fixed vertical strips will rub against each other. Through the frictional force between the two, the inner clamping ruler, the outer clamping ruler and the side support member will be in a relatively fixed state.

[0018] Furthermore, side holes are respectively formed on both sides of the through hole. Side blocks are also respectively formed on both sides of the resisting block. Fixed rods are fixedly arranged on the side walls of the side holes. A placing groove is formed in the side wall of the side hole. The placing groove includes a vertical section, an inclined section, a placing section and a connecting section. The inclined section is communicated with the vertical section. The placing section is communicated with the inclined section. The connecting section is communicated with the placing section. The connecting section and the vertical section are on the same straight line. A heart-shaped block is fixedly arranged in the placing section. The fixed rod slides in the vertical section.

[0019] Through the above technical solution, when the resisting block moves downward along the through hole, the fixed rod will move along the vertical section and the inclined section and finally stop at the depressed position of the placing section and the heart-shaped block. At this time, under the action of the fixed rod, the resisting block will be fixed in the through hole, so that the clamping strips can keep in close contact with the fixed vertical strips, thereby enabling the side support member, the inner clamping ruler and the outer clamping ruler to be in a relatively fixed state.

[0020] Furthermore, a rack segment is fixedly provided on the side wall of the stop block facing the bottom top plate, a groove is opened on the perforated side wall, a gear part is rotatably connected in the groove, the gear part is meshed with the rack segment, a connecting rod is fixedly provided on the side wall of the gear part, a torsion spring is arranged on the outer sleeve of the connecting rod, a positioning plate is fixedly provided on the side wall of the connecting rod, a flat plate is pressed against the side wall of the positioning plate, a fixed round rod is fixedly provided on the end of the connecting rod away from the gear part, the fixed round rod is arranged in a short groove, and the top of the fixed round rod is consistent with the shape of the short groove.

[0021] Through the above technical solution, the plane plate can have a push-up effect on the positioning plate, and the force applied by the torsion spring to the connecting rod will keep the positioning plate in contact with the plane plate. In the initial state, the plane end of the fixed round rod will be in a state of not contacting the short slot, that is, at this time the fixed round rod will prevent the short rod from moving toward the direction of the servo motor.

[0022] Furthermore, a telescopic rod is fixedly provided at one end of the moving threaded rod away from the servo motor, a semicircular block is fixedly provided at the bottom of the top top plate, a cavity is opened in the top top plate, a semicircular block is rotatably connected in the cavity, the telescopic rod passes through the cavity and is fixedly connected to the side wall of the semicircular block, and a clamping cavity is opened at the top of the bottom top plate, and the shape of the clamping cavity is consistent with the shape of the semicircular block.

[0023] Through the above technical solution, when the servo motor drives the moving threaded rod to rotate, the telescopic rod will also synchronously drive the semicircular block to rotate. When the card plate is inserted into the card slot, the semicircular block is completely separated from the card cavity, and then the top top plate will be pushed forward together with the top plate. At this time, the semicircular block will also rotate with the telescopic rod, but the top top plate has been separated from the bottom top plate, so the rotating semicircular block will not have any other impact.

[0024] Furthermore, the bottom of the bottom top plate abuts against the top of the test bench, and the sum of the heights of the top top plate and the bottom top plate is less than the height of the top cover.

[0025] Through the above technical solution, the top top plate and the bottom top plate will be stacked up and down in the initial state, and the height of the two is less than the height of the top cover. Even if the pressure head squeezes the rubber support body and the rubber support body is compressed, it will not squeeze the top top plate.

[0026] A detection method for a bridge engineering rubber bearing testing machine comprises the following specific steps:

[0027] S1. Pull the inner clamp and the outer clamp apart so that the two clamps respectively bear against the side walls of the test bench, and then place the rubber bearing body on the test bench. After the same scale is calculated on both sides, place the rubber bearing body in the middle of the test bench.

[0028] S2. Then rotate the throttle grip so that the fixed threaded rod can rotate in the fixed plate and the bottom plate, and then insert it into the fixing hole. At this time, the top roof abuts against the side wall of the top cover, and the bottom roof abuts against the side wall of the basin - type base;

[0029] S3. Then press the abutting block along the perforation so that the clamping strip at the bottom of the abutting block and the fixed vertical strip are mutually extruded. During the downward pressing process, the fixing rods on the side - hole side wall will move along the vertical section and the inclined section in turn, and finally stay in the placement section. At this time, release the abutting block, and the abutting block will be restricted at the current position by the fixing rod and the placement section, thereby fixing the relative position of the inner clamping ruler and the outer clamping ruler;

[0030] S4. During the downward pressing process of the abutting block, the rack section on the side wall of the abutting block will enter the groove and mesh with the gear part, so that the gear part drives the connecting rod to rotate. The rotation of the connecting rod will compress the torsion spring, and at the same time the connecting rod will also drive the fixed round rod to rotate. After rotation, the fixed round rod will present a state with the flat end facing up, thus facilitating the movement of the short rod;

[0031] S5. Start the pressure head and conduct a pressure test on the rubber bearing body from directly above. Record the data through multiple tests to test the compressive performance of the rubber bearing body in the axial direction;

[0032] S6. Then start the servo - motor. The operation of the servo - motor will drive the moving threaded rod to rotate. The clamping plate arranged on the moving threaded rod will move along the extension rod. At this time, since the pushing plate does not contact the moving threaded rod, it will not move;

[0033] S7. The rotation of the moving threaded rod will also drive the telescopic rod to rotate, and the semi - circular block fixedly connected to the telescopic rod will rotate out of the clamping cavity. When the clamping plate moves to the card slot, the semi - circular block will just completely rotate out of the clamping cavity;

[0034] S8. After the clamping plate moves to the card slot, due to the magnetic connection between the clamping plate and the card slot, the clamping plate will drive the pushing plate to move along the short slot together. The top plate fixedly connected to the top of the pushing plate will drive the top roof to push the top cover to offset relative to the basin - type base;

[0035] S9. Then start the pressure head again and conduct a pressure test on the rubber bearing body in an inclined state from directly above. Record the data through multiple tests to test the compressive performance of the rubber bearing body when facing the pressure in the inclined direction.

[0036] The beneficial effects of the present invention are as follows:

[0037] (1) By providing a side support member that can adjust the position of the rubber bearing, before the pressure head detects the rubber bearing, the rubber bearing can be adjusted to an inclined stress state in advance. At this time, although the force application direction of the pressure head falling from directly above does not change, due to the fact that the rubber bearing body is in an inclined stress state, the pressure head will play the role of facilitating the test of the diagonal compressive capacity of the rubber bearing;

[0038] (2) By providing an internal clamping ruler and an external clamping ruler that can slide relative to each other, through the sliding method, they can be conveniently installed on the test bench or removed from the test bench. At the same time, in the clamped state, by respectively aligning the specified positions of the left and right scale lines, it can also ensure that the rubber bearing body is placed in the middle position of the test bench, thus facilitating the pressure test of the rubber bearing body from directly above by the pressure head;

[0039] (3) By providing a blocking block and a paired perforation, when the blocking block moves downward along the perforation, the fixed rod will move along the vertical section and the inclined section, and finally stop at the placement section and the concave position of the heart-shaped block. At this time, under the action of the fixed rod, the blocking block will be fixed in the perforation, so that the clamping strip can be kept in close contact with the fixed vertical strip, thereby enabling the side support member, the internal clamping ruler and the external clamping ruler to be in a relatively fixed state. Brief Description of the Drawings

[0040] Figure 1 is the overall structural schematic diagram of the present invention;

[0041] Figure 2 is the structural connection schematic diagram among the rubber bearing body, the measuring ruler and the side support member at the top of the test bench in the present invention;

[0042] Figure 3 is Figure 2 the partial enlarged view at A in

[0043] Figure 4 is the structural connection schematic diagram of the measuring ruler in the present invention;

[0044] Figure 5 is the structural schematic diagram of the two side support members in the present invention;

[0045] Figure 6 is the structural schematic diagram of the blocking block in the present invention;

[0046] Figure 7 is the structural schematic diagram of the internal perforation of the side support member in the present invention;

[0047] Figure 8 is Figure 7 the partial enlarged view at B in

[0048] Figure 9 It is a schematic diagram of the structural connection inside the bottom plate in the present invention;

[0049] Figure 10 is Figure 1 a partial enlarged view of the C position in;

[0050] Figure 11 It is a schematic diagram of the structural connection between the top plate and the bottom top plate in the present invention.

[0051] Reference numerals: 1. Pressing head; 2. Test bench; 3. Pot - type base; 4. Rubber block; 5. Top cover; 6. Bottom plate; 7. Bottom top plate; 8. Top plate; 9. Fixed plate; 10. Top top plate; 11. Servo motor; 12. Fixed threaded rod; 13. Rotating handle; 14. Fixed hole; 15. Inner clamping ruler; 16. Outer clamping ruler; 17. Movement groove; 18. Clamping plate; 19. Scale line; 20. Fixed vertical bar; 21. Limit rod; 22. Limit block; 23. Movement threaded rod; 24. Pushing plate; 25. Short rod; 26. Short groove; 27. Card slot; 28. Extension rod; 29. Card plate; 30. Perforation; 31. Blocking block; 32. Card strip; 33. Side hole; 34. Side block; 35. Fixed rod; 36. Vertical section; 37. Inclined section; 38. Placing section; 40. Connecting section; 41. Heart - shaped block; 42. Rack section; 43. Groove; 44. Gear part; 45. Connecting rod; 46. Torsion spring; 47. Positioning plate; 48. Flat plate; 49. Fixed round rod; 50. Expansion rod; 51. Semi - circular block; 52. Card cavity. Detailed implementation manners

[0052] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0053] As Figure 1 - Figure 2 shown, a rubber bearing testing machine for bridge engineering in this embodiment includes a testing machine body and a rubber bearing body. The testing machine body includes a pressing head 1 and a test bench 2. The pressing head 1 is located above the test bench 2. The rubber bearing body is located on the test bench 2. The rubber bearing body includes a pot - type base 3, a rubber block 4 and a top cover 5. The rubber block 4 is located inside the pot - type base 3. The top cover 5 is installed on the top of the rubber block 4. Measuring rulers are respectively installed on both sides of the test bench 2. The measuring rulers are clamped on the side walls on both sides of the test bench 2. Side supports are installed on the measuring rulers. The two side supports will clamp the rubber bearing body from both sides, which can not only play the role of fixing the rubber bearing body, but also play the role of pushing the rubber bearing body into an inclined stress state.

[0054] Refer to Figure 4, the measuring ruler includes an inner clamping ruler 15 and an outer clamping ruler 16. An operation groove 17 is provided at one end of the outer clamping ruler 16 facing the inner clamping ruler 15. The inner clamping ruler 15 is slidably connected to the inside of the operation groove 17. Clamping plates 18 are fixedly arranged on the side walls of the opposite ends of the inner clamping ruler 15 and the outer clamping ruler 16 respectively. The two clamping plates 18 are respectively abutted against the side walls on both sides of the test bench 2. Scale lines 19 are provided on the tops of the inner clamping ruler 15 and the outer clamping ruler 16. The side of the scale line 19 close to the clamping plate 18 is zero. The inner clamping ruler 15 and the outer clamping ruler 16 that can slide relative to each other can be conveniently installed on or removed from the test bench 2 by sliding. At the same time, in the clamped state, by respectively aligning the specified positions of the left and right scale lines 19, it can be ensured that the rubber bearing body is placed in the middle position of the test bench 2, thereby facilitating the pressure head 1 to conduct experiments on the rubber bearing body.

[0055] Refer to Figure 4 and Figure 5 , several fixed vertical bars 20 are arranged at the top of one end of the inner clamping ruler 15 close to the outer clamping ruler 16. Two limiting rods 21 are fixedly arranged at the top of one end of the outer clamping ruler 16 close to the inner clamping ruler 15. A limiting block 22 matching the limiting rods 21 is arranged at the bottom of the bottom plate 6. The limiting block 22 is slidably connected to the limiting rods 21. The limiting rods 21 are T-shaped, and a T-shaped hole is also provided at the top of the paired limiting block 22. Therefore, the limiting block 22 can move along the limiting rods 21, thereby facilitating the adjustment of the position of the bottom plate 6 and thus facilitating the removal of the entire side support member from the test bench 2.

[0056] Combined with Figure 2 and Figure 3 , the side support member includes a bottom plate 6, a bottom top plate 7, a top plate 8, a fixing plate 9, a top top plate 10 and a servo motor 11. The side walls of the bottom plate 6 and the bottom top plate 7 are fixedly connected. The bottom plate 6 abuts against the side wall of the pot-shaped base 3. The fixing plate 9 is movably inserted into the top plate 8. One end of the top plate 8 away from the fixing plate 9 is fixedly connected to the side wall of the top top plate 10. The top top plate 10 abuts against the side wall of the top cover 5. The servo motor 11 is arranged between the fixing plate 9 and the bottom plate 6. The servo motor 11 drives the top top plate 10 to move. The bottom of the bottom top plate 7 abuts against the top of the test bench 2. The sum of the heights of the top top plate 10 and the bottom top plate 7 is less than the height of the top cover 5. The top top plate 10 and the bottom top plate 7 will be stacked up and down in the initial state, and their height is less than the height of the top cover 5. Even if the pressure head 1 squeezes the rubber bearing body and the rubber bearing body is compressed, the top top plate 10 will not be squeezed.

[0057] Similarly refer to Figure 2 and Figure 3A moving threaded rod 23 is fixedly provided at the output end of the servo motor 11, and a push plate 24 is movably sleeved outside the moving threaded rod 23. The top of the push plate 24 is fixedly connected to the bottom of the top plate 8, and a short rod 25 is fixedly connected to the bottom of the push plate 24. A short groove 26 is provided at the top of the bottom plate 6, and the short rod 25 is slidably connected in the short groove 26. A card slot 27 is provided on the side wall of the push plate 24, and two extension rods 28 are fixedly provided in the card slot 27. A card plate 29 is movably sleeved on the two extension rods 28. The shape of the card plate 29 is consistent with the shape of the card slot 27. The card plate 29 and the card slot 27 are magnetically connected. The card plate 29 is threadedly connected to the moving threaded rod 23. The operation of the servo motor 11 will cause the moving threaded rod 23 to rotate, and then the card plate 29 first moves along the moving threaded rod 23, and then snaps into the card slot 27, and drives the push plate 24 and the top plate 8 to move along the moving threaded rod 23, thereby pushing the top cover 5 of the rubber bearing body, so that the rubber bearing body is in an inclined force state.

[0058] from Figure 5 It can be seen that the side support members on both sides of the rubber support body are not exactly the same, because the two side support members play different roles. One side support member will push the top cover 5, while the other side support member will make way for the top cover 5 to move. Therefore, although the push plate 24 moves in different directions, the position of the clamping plate 29 relative to the push plate 24 does not change. Figure 5 In the side support of the upper part, the push plate 24 will move to the left, and the top plate 10 will push the top cover 5 to move to the left. Figure 5 In the side support member of the lower part, although the push plate 24 will also move to the left, the top plate 10 will make way for the top cover 5, thereby making it easier for the top plate 10 on the other side to push the top cover 5.

[0059] Reference Figure 3 and Figure 11 , a telescopic rod 50 is fixedly provided at one end of the moving threaded rod 23 away from the servo motor 11, and a semicircular block 51 is fixedly provided at the bottom of the top top plate 10. A cavity is provided in the top top plate 10, and a semicircular block 51 is rotatably connected in the cavity. The telescopic rod 50 passes through the cavity and is fixedly connected to the side wall of the semicircular block 51. A clamping cavity 52 is provided at the top of the bottom top plate 7. The shape of the clamping cavity 52 is consistent with the shape of the semicircular block 51. When the servo motor 11 drives the moving threaded rod 23 to rotate, the telescopic rod 50 will also synchronously drive the semicircular block 51 to rotate. When the clamping plate 29 is clamped into the clamping groove 27, the semicircular block 51 is just completely separated from the clamping cavity 52, and then the top top plate 10 will be pushed forward by the pushing plate 24 together with the top plate 8. At this time, the semicircular block 51 will also rotate with the telescopic rod 50, but the top top plate 10 has been separated from the bottom top plate 7, so the rotating semicircular block 51 will not have other effects.

[0060] CombinationFigure 4 As shown in Figure 6 FIG. 0, a bottom plate 6 has a perforation 30 formed in a side wall thereof, and a blocking block 31 is installed in the perforation 30. A plurality of clamping strips 32 are fixedly provided at the bottom of the blocking block 31. The plurality of clamping strips 32 respectively abut against side walls of a plurality of fixed vertical strips 20. Both the clamping strips 32 and the fixed vertical strips 20 are made of rubber. Pressing the blocking block 31 downward will cause the clamping strips 32 and the fixed vertical strips 20 to be mutually extruded. Since their distributions are both dense, the side walls of the clamping strips 32 and the side walls of the fixed vertical strips 20 will rub against each other. Through the frictional force therebetween, the inner clamping ruler 15, the outer clamping ruler 16 and the side support member will be in a relatively fixed state.

[0061] Referring to Figure 6 - Figure 8 FIG. 0, side holes 33 are respectively formed on both sides of the perforation 30, and side blocks 34 are also respectively formed on both sides of the blocking block 31. A fixing rod 35 is fixedly provided on a side wall of the side hole 33. A placement groove is formed on the side wall of the side hole 33. The placement groove includes a vertical section 36, an inclined section 37, a placement section 38 and a communication section 40. The inclined section 37 communicates with the vertical section 36, the placement section 38 communicates with the inclined section 37, the communication section 40 communicates with the placement section 38, and the communication section 40 and the vertical section 36 are located on the same straight line. As can be seen from Figure 6 FIG. 0, the communication section 40 is inclined, and one end of the communication section 40 facing the vertical section 36 is higher. Therefore, when the fixing rod 35 moves along the vertical section 36, it can only enter the inclined section 37 and will not enter the communication section 40 in the reverse direction. A heart-shaped block 41 is fixedly provided in the placement section 38. The fixing rod 35 slides in the vertical section 36. When the blocking block 31 moves downward along the perforation 30, it will cause the fixing rod 35 to move along the vertical section 36 and the inclined section 37, and finally stop at the recessed position of the placement section 38 and the heart-shaped block 41. At this time, under the action of the fixing rod 35, the blocking block 31 will be fixed in the perforation 30, so that the clamping strips 32 can be kept in close contact with the fixed vertical strips 20, thereby enabling the side support member, the inner clamping ruler 15 and the outer clamping ruler 16 to be in a relatively fixed state.

[0062] Referring to Figure 9 - Figure 10, on one side wall facing the bottom top plate 7 of the abutting block 31, a rack section 42 is fixedly arranged. A groove 43 is formed on the side wall of the through hole 30. A gear section 44 is rotatably connected in the groove 43. The gear section 44 meshes with the rack section 42. A connecting rod 45 is fixedly arranged on the side wall of the gear section 44. A torsion spring 46 is sleeved outside the connecting rod 45. A positioning plate 47 is fixedly arranged on the side wall of the connecting rod 45. A flat plate 48 abuts against the side wall of the positioning plate 47. The force exerted by the torsion spring 46 on the connecting rod 45 will keep the positioning plate 47 in contact with the flat plate 48. At one end of the connecting rod 45 away from the gear section 44, a fixed round rod 49 is fixedly arranged. The fixed round rod 49 is arranged in the short groove 26. The top of the fixed round rod 49 has the same shape as the short groove 26. In the initial state, the flat end of the fixed round rod 49 will not be in contact with the short groove 26, that is, at this time, the fixed round rod 49 will play a role in preventing the short rod 25 from moving towards the servo motor 11 direction.

[0063] Combined with Figure 4 and Figure 5 , threaded holes are formed on the side walls of both the fixing plate 9 and the bottom plate 6. A fixed threaded rod 12 is commonly screwed in the two threaded holes. A turning handle 13 is arranged at the top of the fixed threaded rod 12. Two fixing holes 14 are formed on the top of the test bench 2. The two fixed threaded rods 12 are respectively inserted into the two fixing holes 14. When the fixed threaded rods 12 are inserted into the fixing holes 14, the side support members can be fixed in the current position, thereby achieving the effect of clamping the rubber bearing body.

[0064] The detection method of the rubber bearing testing machine for bridge engineering includes the following specific steps:

[0065] S1. Pull the inner clamp ruler 15 and the outer clamp ruler 16 apart so that the two clamping plates 18 respectively abut against the two side walls of the test bench 2. Then place the rubber bearing body on the test bench 2. After calculating the same scales on both sides, place the rubber bearing body in the middle position of the test bench 2;

[0066] S2. Then rotate the turning handle 13 so that the fixed threaded rod 12 can rotate in the fixing plate 9 and the bottom plate 6, and then insert it into the fixing hole 14. At this time, the top top plate 10 abuts against the side wall of the top cover 5, and the bottom top plate 7 abuts against the side wall of the pot - type base 3;

[0067] S3. Then press the abutting block 31 along the through hole 30 so that the clamping strip 32 at the bottom of the abutting block 31 and the fixed vertical strip 20 are mutually extruded. During the downward pressing process, the fixed rod 35 on the side wall of the side hole 33 will move along the vertical section 36 and the inclined section 37 in sequence and finally stay in the placement section 38. At this time, release the abutting block 31, and the abutting block 31 will be restricted in the current position by the fixed rod 35 and the placement section 38, thereby fixing the relative positions of the inner clamp ruler 15 and the outer clamp ruler 16;

[0068] S4. During the downward pressing of the pressing block 31, the rack section 42 on the side wall of the pressing block 31 will enter the groove 43 and mesh with the gear section 44, so that the gear section 44 drives the connecting rod 45 to rotate. The rotation of the connecting rod 45 will compress the torsion spring 46. At the same time, the connecting rod 45 will also drive the fixed round rod 49 to rotate. After rotation, the fixed round rod 49 will present a state with the flat end facing up, thus facilitating the movement of the short rod 25.

[0069] S5. Start the pressing head 1 and conduct a pressure test on the rubber bearing body from directly above. Record the data through multiple tests to test the compressive performance of the rubber bearing body in the axial direction.

[0070] S6. Then start the servo motor 11. The operation of the servo motor 11 will drive the moving threaded rod 23 to rotate. The clamping plate 29 arranged on the moving threaded rod 23 will move along the extension rod 28. At this time, since the pushing plate 24 is not in contact with the moving threaded rod 23, it will not move.

[0071] S7. The rotation of the moving threaded rod 23 will also drive the telescopic rod 50 to rotate, and the semi-circular block 51 fixedly connected to the telescopic rod 50 will rotate out of the clamping cavity 52. When the clamping plate 29 moves to the card slot 27, the semi-circular block 51 will just completely rotate out of the clamping cavity 52.

[0072] S8. After the clamping plate 29 moves to the card slot 27, due to the magnetic connection between the clamping plate 29 and the card slot 27, the clamping plate 29 will drive the pushing plate 24 to move along the short slot 26 together. The top plate 8 fixedly connected to the top of the pushing plate 24 will drive the top roof plate 10 to push the top cover 5 to offset relative to the pot - type base 3.

[0073] S9. Then start the pressing head 1 again and conduct a pressure test on the rubber bearing body in an inclined state from directly above. Record the data through multiple tests to test the compressive performance of the rubber bearing body when facing the pressure in the inclined direction.

[0074] The above is only a preferred embodiment of the present invention and is not used to limit the protection scope of the present invention.

Claims

1. A rubber bearing testing machine for bridge engineering, comprising a testing machine body and a rubber bearing body. The testing machine body includes a pressure head (1) and a test bench (2). The pressure head (1) is located above the test bench (2). The rubber bearing body is located on the test bench (2). The rubber bearing body includes a pot - type base (3), a rubber block (4) and a top cover (5). The rubber block (4) is located inside the pot - type base (3). The top cover (5) is installed on the top of the rubber block (4), and it is characterized in that: On both sides of the test bench (2), measuring rulers are respectively installed. The measuring rulers are clamped on the side walls on both sides of the test bench (2), and side supports are installed on the measuring rulers; The side support includes a bottom plate (6), a bottom top plate (7), a top plate (8), a fixing plate (9), a top top plate (10), and a servo motor (11). The bottom plate (6) is fixedly connected to the side wall of the bottom top plate (7). The bottom plate (6) abuts against the side wall of the pot-shaped base (3). The fixing plate (9) is movably inserted into the top plate (8). One end of the top plate (8) away from the fixing plate (9) is fixedly connected to the side wall of the top top plate (10). The top top plate (10) abuts against the side wall of the top cover (5). The servo motor (11) is installed between the fixing plate (9) and the bottom plate (6), and the servo motor (11) drives the top top plate (10) to move; A moving threaded rod (23) is fixedly arranged at the output end of the servo motor (11). A push plate (24) is movably sleeved outside the moving threaded rod (23). The top of the push plate (24) is fixedly connected to the bottom of the top plate (8). A short rod (25) is fixedly connected to the bottom of the push plate (24). A short groove (26) is opened at the top of the bottom plate (6). The short rod (25) is slidably connected in the short groove (26). A clamping groove (27) is opened on the side wall of the push plate (24). Two extension rods (28) are fixedly arranged in the clamping groove (27). A clamping plate (29) is movably sleeved on the two extension rods (28). The shape of the clamping plate (29) is the same as that of the clamping groove (27). The clamping plate (29) is magnetically connected to the clamping groove (27). The clamping plate (29) is threadedly connected to the moving threaded rod (23); One end of the moving threaded rod (23) away from the servo motor (11) is fixedly provided with a telescopic rod (50). A semi-circular block (51) is fixedly arranged at the bottom of the top top plate (10). A cavity is opened in the top top plate (10), and the semi-circular block (51) is rotatably connected in the cavity. The telescopic rod (50) passes through the cavity and is fixedly connected to the side wall of the semi-circular block (51). A clamping cavity (52) is opened at the top of the bottom top plate (7), and the shape of the clamping cavity (52) is the same as that of the semi-circular block (51); Threaded holes are opened on the side walls of both the fixing plate (9) and the bottom plate (6). A fixing threaded rod (12) is commonly threadedly connected in the two threaded holes. A turning handle (13) is arranged at the top of the fixing threaded rod (12). Two fixing holes (14) are opened at the top of the test bench (2), and the two fixing threaded rods (12) are respectively inserted into the two fixing holes (14).

2. The bridge engineering rubber bearing testing machine according to claim 1, characterized in that, The measuring ruler includes an inner clamping ruler (15) and an outer clamping ruler (16). One end of the outer clamping ruler (16) facing the inner clamping ruler (15) is provided with a movement groove (17). The inner clamping ruler (15) is slidably connected to the inside of the movement groove (17). One end side wall of the inner clamping ruler (15) and the outer clamping ruler (16) facing away from each other are respectively fixedly provided with clamping plates (18). The two clamping plates (18) respectively abut against the two side walls of the test bench (2). The tops of the inner clamping ruler (15) and the outer clamping ruler (16) are both provided with scale lines (19). The side of the scale line (19) close to the clamping plate (18) is zero.

3. The bridge engineering rubber bearing testing machine according to claim 2, wherein A number of fixed vertical bars (20) are installed at the top of one end of the inner clamping ruler (15) close to the outer clamping ruler (16). Two limiting rods (21) are fixedly provided at the top of one end of the outer clamping ruler (16) close to the inner clamping ruler (15). A limiting block (22) matching the limiting rod (21) is installed at the bottom of the bottom plate (6). The limiting block (22) is slidably connected to the limiting rod (21).

4. The bridge engineering rubber bearing testing machine according to claim 3, characterized in that, A perforation (30) is provided on the side wall of the bottom plate (6). A pressing block (31) is installed in the perforation (30). A number of clamping bars (32) are fixedly provided at the bottom of the pressing block (31). The number of clamping bars (32) respectively abut against the side walls of the number of fixed vertical bars (20). Both the clamping bar (32) and the fixed vertical bar (20) are made of rubber.

5. The bridge engineering rubber bearing testing machine according to claim 4, wherein Side holes (33) are respectively provided on both sides of the perforation (30). Side blocks (34) are also respectively provided on both sides of the pressing block (31). A fixed rod (35) is fixedly provided on the side wall of the side hole (33). A placement groove is provided on the side wall of the side hole (33). The placement groove includes a vertical section (36), an inclined section (37), a placement section (38) and a connecting section (40). The inclined section (37) is connected to the vertical section (36). The placement section (38) is connected to the inclined section (37). The connecting section (40) is connected to the placement section (38). The connecting section (40) and the vertical section (36) are on the same straight line. A heart-shaped block (41) is fixedly provided in the placement section (38). The fixed rod (35) slides in the vertical section (36).

6. The bridge engineering rubber bearing testing machine according to claim 4, characterized in that, A rack section (42) is fixedly provided on one side wall of the pressing block (31) facing the bottom top plate (7). A groove (43) is provided on the side wall of the perforation (30). A gear part (44) is rotatably connected in the groove (43). The gear part (44) meshes with the rack section (42). A connecting rod (45) is fixedly provided on the side wall of the gear part (44). A torsion spring (46) is sleeved on the connecting rod (45). A positioning plate (47) is fixedly provided on the side wall of the connecting rod (45). A flat plate (48) abuts against the side wall of the positioning plate (47). A fixed round rod (49) is fixedly provided at one end of the connecting rod (45) away from the gear part (44). The fixed round rod (49) is arranged in the short groove (26). The top of the fixed round rod (49) has the same shape as the short groove (26).

7. The bridge engineering rubber bearing testing machine according to claim 1, characterized in that, The bottom of the bottom top plate (7) abuts against the top of the test bench (2), and the sum of the heights of the top top plate (10) and the bottom top plate (7) is less than the height of the top cover (5).

8. The detection method of a bridge engineering rubber bearing testing machine according to claim 1, characterized in that, It includes the following specific steps: S1. Pull the inner clamping ruler (15) and the outer clamping ruler (16) apart so that the two clamping plates (18) respectively abut against the side walls on both sides of the test bench (2). Then place the rubber bearing body on the test bench (2). After calculating the same scale on both sides, place the rubber bearing body in the middle position of the test bench (2); S2. Then rotate the turning handle (13) so that the fixed threaded rod (12) can rotate in the fixed plate (9) and the bottom plate (6), and then insert it into the fixing hole (14). At this time, the top top plate (10) abuts against the side wall of the top cover (5), and the bottom top plate (7) abuts against the side wall of the pot - type base (3); S3. Then press the abutting block (31) along the perforation (30) so that the clamping strip (32) at the bottom of the abutting block (31) is squeezed against the fixed vertical strip (20). During the downward pressing process, the fixing rod (35) on the side wall of the side hole (33) will move along the vertical section (36) and the inclined section (37) in sequence and finally stay in the placement section (38). At this time, release the abutting block (31), and the abutting block (31) will be restricted at the current position by the fixing rod (35) and the placement section (38), thereby fixing the relative position of the inner clamping ruler (15) and the outer clamping ruler (16); S4. During the downward pressing process of the abutting block (31), the rack section (42) on the side wall of the abutting block (31) will enter the groove (43) and mesh with the gear part (44), so that the gear part (44) drives the connecting rod (45) to rotate. The rotation of the connecting rod (45) will compress the torsion spring (46). At the same time, the connecting rod (45) will also drive the fixed round rod (49) to rotate. After rotation, the fixed round rod (49) will present a state with the flat end facing up, thus facilitating the movement of the short rod (25); S6. Start the pressure head (1) to conduct a pressure test on the rubber bearing body from directly above. Record the data through multiple tests to test the compressive performance of the rubber bearing body in the axial direction; S7. Then start the servo - motor (11). The operation of the servo - motor (11) will drive the moving threaded rod (23) to rotate. The clamping plate (29) arranged on the moving threaded rod (23) will move along the extension rod (28). At this time, since the pushing plate (24) does not contact the moving threaded rod (23), it will not move; S8. The rotation of the moving threaded rod (23) will also drive the telescopic rod (50) to rotate, and the semi - circular block (51) fixedly connected to the telescopic rod (50) will rotate out of the clamping cavity (52). When the clamping plate (29) moves into the clamping groove (27), the semi - circular block (51) will just completely rotate out of the clamping cavity (52); After the clamping plate (29) moves into the clamping groove (27), due to the magnetic connection between the clamping plate (29) and the clamping groove (27), the clamping plate (29) will drive the push plate (24) to move along the short groove (26) together. The top plate (8) fixedly connected to the top of the push plate (24) will drive the top roof plate (10) to push the top cover (5) to offset relative to the basin - type base (3). S9. Then, start the pressure head (1) again to conduct a pressure test on the rubber bearing body in an inclined state from directly above. Record the data through multiple tests, so as to test the compressive performance of the rubber bearing body when facing the pressure in the inclined direction.

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