CN117212299B - Hydraulic cylinder pressing testing device - Google Patents
Hydraulic cylinder pressing testing device Download PDFInfo
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- CN117212299B CN117212299B CN202311465782.1A CN202311465782A CN117212299B CN 117212299 B CN117212299 B CN 117212299B CN 202311465782 A CN202311465782 A CN 202311465782A CN 117212299 B CN117212299 B CN 117212299B
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- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000000725 suspension Substances 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 description 7
- 238000004880 explosion Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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Abstract
The invention relates to the technical field of pressing test, and discloses a hydraulic cylinder pressing test device, which comprises a switching structure; the switching structure comprises: a rotator whose interior is hollow; the mandrel is rotationally embedded in the revolving body, the top of the mandrel is detachably connected with the rotary power device, and the bottom of the mandrel can be in threaded connection with an oil inlet of the cylinder body to be tested; one end of the connecting pipe is rigidly connected with the revolving body, and the other end of the connecting pipe is communicated with the pressurizing pump; the inner wall of the revolving body is rotatably and hermetically connected with the surface of the mandrel through a thread structure, a liquid gap is arranged at the waist of the thread occlusal surface of the inner wall of the revolving body and the surface of the mandrel, the liquid gap is always communicated with the inner cavity of the connecting pipe, and a curved channel is formed in the mandrel. Through the arrangement, the transmission end of the mandrel can be independently arranged outside the whole circulation system by utilizing the tight fit among the parts, so that the mandrel can be directly installed and detached by using the rotary power device.
Description
Technical Field
The invention relates to the technical field of pressing test, in particular to a hydraulic cylinder pressing test device.
Background
When the hydraulic cylinder body is subjected to delivery detection or maintenance detection, the hydraulic cylinder body needs to be subjected to a pressing test (namely, a pressing test), and the general process of the maintenance test process is as follows: firstly, connecting an upper cavity cylinder mouth of a hydraulic cylinder with a pipeline, introducing high-pressure liquid into the pipeline to observe a cylinder cover on the surface of a movable column and a lower cavity cylinder mouth, and checking whether liquid leakage exists or not; then connecting the lower cavity mouth of the hydraulic cylinder with the pipeline, then introducing high-pressure liquid to observe the upper cavity mouth of the hydraulic cylinder, checking whether liquid leakage exists, and if the liquid leakage does not exist, indicating that the overhaul is qualified; if the leakage phenomenon exists, judging a sealing failure part according to the leakage part, and re-decomposing the movable column, replacing the sealing, assembling and re-pressing according to the process until the overhaul is qualified.
For example, the invention patent with application publication number CN113624497a discloses a pressing device for detecting a fault location of a diesel engine of an internal combustion locomotive, including a first through pipe, a second through pipe and a first plug door; one end of the first through pipe is connected with an explosion detection valve of the cylinder cover to be detected, the other end of the first through pipe is connected with one end of the second through pipe, and the other end of the second through pipe is connected with high-pressure air equipment; the first plug door is arranged on the second through pipe.
The first through pipe is connected with the explosion detection valve and then is communicated with the inner cavity of the cylinder to be detected, the first through pipe is communicated with the explosion detection valve generally through an adapter (namely a threaded sleeve with a sealing ring and a threaded joint and the like), but the installation or disassembly of the adapter generally needs to manually rotate a part of a rotating joint in the adapter to be spirally connected, the joint is connected in a pipeline, the joint is difficult to directly apply acting force to drive, and a wrench and other tools are required to be sleeved on the outer surface of the adapter to repeatedly rotate, so that the efficiency is low.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art described above to some extent.
Therefore, the invention provides a hydraulic cylinder pressing testing device, which comprises an adapter structure; the switching structure comprises:
a rotator whose interior is hollow;
the mandrel is rotationally embedded in the revolving body, the top of the mandrel is detachably connected with the rotary power device, and the bottom of the mandrel can be in threaded connection with an oil inlet of the cylinder body to be tested;
one end of the connecting pipe is rigidly connected with the revolving body, and the other end of the connecting pipe is communicated with the pressurizing pump;
the inner wall of the revolving body is rotatably and hermetically connected with the surface of the mandrel through a thread structure, a liquid gap is formed at the waist of the thread occlusal surface of the inner wall and the spindle, the liquid gap is always communicated with the inner cavity of the connecting pipe, and a curved channel is formed in the mandrel so that one end is always communicated with the liquid gap in the rotation process of the curved channel and the other end is always communicated with an oil inlet of the cylinder body to be tested.
Further, an inner wall of the revolving body is provided with an annular concave structure so as to form a liquid gap with the circumferential surface of the mandrel;
the circumferential surface of the mandrel is provided with a ring bulge which is embedded in the ring concave structure so as to limit the axial positions of the mandrel and the revolving body.
Further, a sealing ring is sleeved at the bottom of the mandrel through a groove.
Further, the connecting pipe is always communicated with the pressurizing pump through the adapter.
Further, still include the workstation, install two plate bodies through slide rail one and lockable on the workstation, every all be equipped with the spout on the plate body, every equal slidable mounting has the centre gripping bottom plate in the spout, and every the outside of centre gripping bottom plate all is equipped with slide rail two the top detachably of slide rail two installs the centre gripping roof, and each the same side of plate body all is connected with the curb plate, two the curb plate is with one side detachably installs the bracing piece, install on the bracing piece to slidable and lockable the installation diaphragm of the central extension of workstation, be equipped with the mounting hole on the installation diaphragm, in order to cup joint the solid of revolution and with this solid of revolution locking.
Further, one side of the workbench, which is close to the side plate, is provided with an upper bracket, a suspension mounting table parallel to the table top of the workbench is mounted on the upper bracket, a driving motor is fixedly mounted on the suspension mounting table, an output shaft of the driving motor penetrates through the suspension mounting table and is fixedly sleeved with a first transmission shaft, the top end of the first transmission shaft can be sleeved with a second transmission shaft in a linear sliding manner, the first transmission shaft and the second transmission shaft are further in rotary transmission through spline key slot matching, a suspension plate is arranged at the bottom end of the second transmission shaft, a center line of the suspension plate is provided with a bearing through penetration to rotatably mount the second transmission shaft, and the suspension plate is connected with the suspension mounting table through a group of telescopic rods.
Further, the parallel transverse plate is arranged above the installation transverse plate in parallel, the driving sleeve is rotatably arranged on the parallel transverse plate, the driving sleeve is sleeved at the top end of the mandrel, the driving sleeve is provided with an elastic transmission shaft through an inserting structure, and the top end of the elastic transmission shaft is fixedly connected with the bottom end of the second transmission shaft.
Compared with the prior art, the invention has the beneficial effects that:
the switching structure of the invention firstly extends the top of the mandrel to the outside of the revolving body, so that the top of the mandrel extends out of the circulation system, then a liquid gap which is in a ring shape is arranged at a constant engagement position of the mandrel and the threaded engagement surface of the revolving body, and the liquid gap is used for being communicated with the inner cavity of the connecting pipe and the curved channel which is in a special shape all the time, thus the circulation system is not interrupted, and the mandrel is provided with an operable end part outside the system.
Therefore, the transfer structure of the invention can make the transmission end of the mandrel independent of the whole circulation system by the tight fit of the parts, thereby being capable of directly using the rotary power device to mount and dismount the mandrel.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a longitudinal view of the adapter structure of the present invention;
FIG. 3 is a schematic perspective view of the switching structure of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a schematic perspective view of the present invention;
FIG. 6 is a schematic diagram of an explosion structure of the plugging structure of the present invention;
FIG. 7 is a schematic view of the structure of the radial protrusion of the present invention when deformed in an inverted trapezoidal groove.
Reference numerals:
1. an adapter; 2. a connecting pipe; 3. a mandrel; 4. a revolving body; 5. a thread structure; 6. a seal ring; 7. a fixing portion; 8. a turning part; 9. a nut structure; 10. a curved channel; 11. a liquid gap; 12. a work table; 13. a first slide rail; 14. a plate body; 15. a chute; 16. clamping the bottom plate; 17. a second slide rail; 18. clamping a top plate; 19. a side plate; 20. a support rod; 21. mounting a transverse plate; 22. an upper bracket; 23. a suspended mounting table; 24. a driving motor; 25. a transmission shaft I; 26. a transmission shaft II; 27. a spline; 28. a suspended plate; 29. a bearing; 30. a telescopic rod; 31. a parallel cross plate; 32. a drive sleeve; 33. an elastic transmission shaft; 34. a pressurizing pump; 35. a one-way valve; 36. a connecting hose; 37. a liquid tank; 38. radial protrusion; 39. inverted trapezoidal grooves; 40. monitoring points.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown.
In order to better compare the difference between the present invention and the prior art, the present invention provides an example of the prior art, referring to fig. 1, the adaptor of the prior art is generally composed of two parts, namely, a fixed part 7 fixedly communicated with a pipeline, and a rotating part 8 rotatably installed in the fixed part 7, wherein the bottom of the rotating part 8 can be in threaded connection with an oil inlet of a cylinder to be tested, and the rotating part 8 can have a nut structure 9 exposed outside, and a spanner can be adopted to rotate the nut structure 9 during installation, so that the rotating part 8 is in threaded engagement with the oil inlet, and at the moment, the rotating connection part of the fixed part 7 and the rotating part 8 is also in sealed engagement (generally, the rotating sealing connection part of the fixed part and the rotating part is realized in a threaded or apron manner).
As can be seen from the above description, the fixing portion 7 and the rotating portion 8 need to form a part of the circulation system, but the circulation system does not have an end portion for convenient operation, and the circulation system cannot be cut off, so that the installation or the disassembly can be achieved only by repeatedly rotating a tool such as a wrench which is half-sleeved or full-sleeved on the circulation system for a plurality of circles, and the efficiency is not high when the nut structure 9 is repeatedly rotated by using the wrench manually.
The invention provides a hydraulic cylinder pressing testing device, referring to fig. 2 and 3, the device comprises a switching structure, the switching structure comprises: a rotation body 4 whose interior is hollow; the mandrel 3 is rotationally embedded in the revolving body 4, the top of the mandrel is detachably connected with the rotary power device, and the bottom of the mandrel can be in threaded connection with an oil inlet of the cylinder body to be tested; a connecting pipe 2, one end of which is rigidly connected to the revolving body 4, and the other end of which is connected to the pressurizing pump 34; the inner wall of the revolving body 4 is rotatably and hermetically connected with the surface of the mandrel 3 through a thread structure 5, a liquid gap 11 is arranged at the waist of the thread occlusal surface of the inner wall and the mandrel, the liquid gap 11 is always communicated with the inner cavity of the connecting pipe 2, a curved channel 10 is arranged in the mandrel 3, one end of the curved channel is always communicated with the liquid gap 11 in the rotation process of the curved channel, and the other end of the curved channel is always communicated with the oil inlet of the cylinder to be tested.
Specifically, the transfer structure of the present invention firstly extends the top of the mandrel 3 to the outside of the revolving body 4, so that the top of the mandrel 3 extends out of the circulation system, then, an annular liquid gap 11 is formed at a constant engagement position (which refers to a portion where the mandrel 3 and the revolving body 4 are engaged all the time in the whole rotation process, and the arrangement can ensure tightness), and then, the liquid gap 11 is used to be communicated with the inner cavity of the connecting pipe 2 all the time and with a curved channel 10 (in the embodiment shown in fig. 2, an inverted L shape) in a special shape, so that the mandrel 3 has an operable end outside the system while the circulation system is not cut off.
In summary, the adapting structure of the present invention makes the driving end (i.e. the top end of the present embodiment) of the mandrel 3 independent of the whole circulation system by the tight fit between the above-mentioned various parts, so that the mandrel 3 can be directly mounted and dismounted by using a rotation power device (such as an electric screwdriver with a hexagon socket, for example) (note that the driving end of the mandrel 3 needs to be configured to a shape adapted to the hexagon socket at this time).
When a worker directly uses a tool such as an electric screwdriver to rotate the mandrel 3, the number of rotations of the mandrel 3 is easily excessive or insufficient: when the number of turns of the mandrel 3 is too large or too small, the bent channel 10 on the mandrel is dislocated with the liquid gap 11 at this time, or is dislocated with the liquid gap 11 again in the subsequent rotation process, and the circulation system is cut off; therefore, the present invention also makes the following limitations: the inner wall of the revolving body 4 is provided with an annular concave structure so as to form a liquid gap 11 with the circumferential surface of the mandrel 3; the circumferential surface of the mandrel 3 is provided with a ring bulge which is embedded in the ring concave structure so as to limit the axial positions of the mandrel 3 and the revolving body 4. The number of turns of the mandrel 3 can be limited by the cooperation of the annular convex and annular concave structures.
In order to enable the tightness of threaded connection between the bottom of the mandrel 3 and the oil inlet of the cylinder to be tested to be better, a sealing ring 6 is sleeved at the bottom of the mandrel 3 through a groove, and the overall tightness is improved through elastic deformation of the sealing ring 6.
The connecting pipe 2 is always connected to the pressurizing pump 34 via the adapter 1, so that the connecting pipe 2 can communicate with a pipe of a diameter via the adapter 1.
Although the manual work can use tools such as an electric screwdriver to directly operate the mandrel 3, the cylinder to be tested needs to be fixed in advance, if the cylinder is in maintenance detection, the cylinder can be fixed, and if the cylinder is in factory detection, the cylinder needs to be fixed in advance, so that the two steps of fixing the cylinder and driving the mandrel 3 need to be operated separately, the whole operation flow is lack of cooperation, the efficiency is low, and the invention further provides the following structure:
referring to fig. 4 and 5, the invention further comprises a workbench 12, wherein two plate bodies 14 are slidably and lockably arranged on the workbench 12 through a first slide rail 13, a slide groove 15 is arranged on each plate body 14, a clamping bottom plate 16 is slidably arranged in each slide groove 15, and the clamping bottom plate 16 can be slidably or lockably arranged in the slide groove 15 through pneumatic or hydraulic driving in the slide groove 15; the outer side of each clamping bottom plate 16 is provided with a second sliding rail 17, the top end of the second sliding rail 17 is detachably provided with a clamping top plate 18, the second sliding rail 17 can be internally driven to slide or lock on the second sliding rail 17 through pneumatic or hydraulic driving of the clamping top plate 18, the same side (the inner side in fig. 5) of each plate 14 is connected with a side plate 19, the same side of each side plate 19 is detachably provided with a supporting rod 20, the supporting rod 20 is slidably and lockably provided with a mounting transverse plate 21 extending towards the center of the workbench 12, and the mounting transverse plate 21 is provided with a mounting hole so as to be sleeved with the revolving body 4 and locked with the revolving body 4.
On the other hand, an upper bracket 22 is arranged on one side of the workbench 12, which is close to the side plate 19, a suspension mounting table 23 parallel to the table surface of the workbench 12 is mounted on the upper bracket 22, a driving motor 24 (generally a servo motor) is fixedly mounted on the suspension mounting table 23, an output shaft of the driving motor 24 penetrates through the suspension mounting table 23 and fixedly sleeved with a first transmission shaft 25, a second transmission shaft 26 is sleeved on the top end of the first transmission shaft 25 in a linear sliding manner, the first transmission shaft 25 and the second transmission shaft 26 are in rotary transmission through the key slot matching of a spline 27, a suspension plate 28 is arranged at the bottom end of the second transmission shaft 26, a center line of the suspension plate 28 is used for rotatably mounting the second transmission shaft 26 through a penetrating bearing 29, and the suspension plate 28 is connected with the suspension mounting table 23 through a group of telescopic rods 30.
In addition, a parallel transverse plate 31 is also installed in parallel above the installation transverse plate 21, a driving sleeve 32 is installed on the parallel transverse plate 31 in a rotating mode, the driving sleeve 32 is sleeved at the top end of the mandrel 3, an elastic transmission shaft 33 is installed on the driving sleeve 32 through an inserting structure, and the top end of the elastic transmission shaft 33 is fixedly connected with the bottom end of the transmission shaft II 26.
The advantage of using an elastic drive shaft 33 is that: when the invention faces to oil cylinders with different positions of various oil inlets at horizontal positions, the positions of the transverse plates 21 arranged on the support rods 20 can be adjusted to enable the mandrel 3 to be aligned with the oil inlets at different horizontal positions, but the transverse plates 21 and the suspended plates 28 are offset in the horizontal direction, and the elastic transmission shafts 33 can compensate the offset at the horizontal positions by bending at different degrees under the condition of matching with the telescopic displacement of the telescopic rods 30, the transmission shafts I25 and the transmission shafts II 26.
On the other hand, the elastic transmission shaft 33 may have a slight elasticity itself, which can avoid excessive deflection of the spindle 3 by deformation itself when the spindle 3 is excessively deflected to some extent, and although the excessive deflection of the spindle 3 may be limited by the annular convex and annular concave structures, such excessive deflection may bring a large load to the structure itself and the motor output shaft.
In the above structure, the lateral plate 19 can realize the transverse sliding and the longitudinal sliding and locking of the supporting rod 20 through the pneumatic clamp and the matching sliding groove 15, and the invention adopts a similar sliding and locking structure, and can be generally realized through the pneumatic clamp and the matching sliding groove 15, which belongs to the prior art and is not repeated.
Specifically, referring to fig. 6 and 7, the socket structure is divided into a radial protrusion 38 formed by slotting on the socket portion of the elastic transmission shaft 33, while the driving sleeve 32 is hollow and is provided with an inverted trapezoidal groove 39 on the inner wall thereof, the radial protrusion 38 can be nested in the inverted trapezoidal groove 39, and both are mated with the conventional protrusion in that the upper sides of the driving sleeve 32 are not mated tightly but a gap having an inclined surface is formed between the upper end of the radial protrusion 38 and the upper end of the inverted trapezoidal groove 39 by using the special shape of the inverted trapezoidal groove 39.
Because the radial protrusion 38 is easier to deform than the elastic transmission shaft 33, on the one hand, the gap of the inclined plane can be used as a space for deformation of the radial protrusion 38 when the driving motor 24 excessively drives rotation, and two monitoring points 40 on the radial protrusion 38 are dislocated to a certain extent through deformation of the radial protrusion 38, so that feedback to the equipment is facilitated to automatically brake.
On the other hand, the beveled clearance facilitates removal of the radial projection 38 after excessive deformation, preventing damage to the device in the event of an accidental event.
Working principle: firstly, the clamping top plate 18 is disassembled, and then the distance between the two plate bodies 14 is adjusted according to the length of the cylinder to be tested so as to adapt to the length of the cylinder to be tested, thereby ensuring that the end part of the cylinder to be tested can be clamped;
then, the cylinder to be measured is placed between the left and right pairs of clamping bottom plates 16, and each pair of clamping bottom plates 16 is simultaneously extruded by air pressure or hydraulic pressure, so that each pair of clamping bottom plates 16 moves from two sides to the middle, and therefore, the cylinder to be measured can be automatically clamped on the longitudinal central shaft of the workbench 12, and meanwhile, the clamping top plate 18 simultaneously fixes the upper surface of the cylinder to be measured based on the same principle;
then, adjusting the clamping top plate 18 to the same height as the oil inlet of the cylinder to be tested, and locking the clamping top plate 18 to the side plate 19, wherein the mounting transverse plate 21 is just attached to the upper end face of the oil inlet of the cylinder to be tested, and meanwhile, the bottom end of the mandrel 3 sleeved in the revolving body 4 is just located on the upper end face of the oil inlet of the cylinder to be tested;
then, the distance between the suspended plate 28 and the parallel transverse plate 31 is adjusted through the extension and retraction of the two extension rods 30, so that the overlarge bending degree of the elastic transmission shaft 33 is avoided, and the elastic transmission shaft 33 is generally made of a slightly elastic plastic material, so that the elastic transmission shaft has the rotation transmission capability and a certain bending transmission capability;
the switch of the driving motor 24 is turned on again to enable the output shaft of the driving motor 24 to rotate, the rotation of the output shaft can be finally transmitted to the driving sleeve 32 through the first transmission shaft 25, the second transmission shaft 26 and the elastic transmission shaft 33, then the driving sleeve 32 enables the mandrel 3 to rotate, then the rotation of the mandrel 3 is enabled to be in a screwing motion through the action of threads between the mandrel and the revolving body 4, and finally the mandrel is inserted into the oil inlet of the cylinder to be tested, the driving sleeve 32 has a certain length, so that the top end of the mandrel 3 can linearly slide in the driving sleeve 32 to finish the screwing motion without being separated from the driving sleeve 32;
at this time, by turning on the switch of the pressurizing pump 34 located below the workbench 12, the pressurizing pump 34 is communicated with the adapter 1 through the check valve 35 and the connecting hose 36, and the pressurizing pump 34 pumps the liquid in the liquid tank 37 into the cylinder to be tested for testing;
after the test is finished, the bottom end of the mandrel 3 can be completely unscrewed by controlling the driving motor 24 to reversely rotate, and then the cylinder body to be tested can be directly taken down.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Claims (7)
1. The utility model provides a testing arrangement is suppressed to pneumatic cylinder, includes switching structure, its characterized in that: the switching structure comprises:
a rotor (4) whose interior is hollow;
the mandrel (3) is rotationally embedded in the revolving body (4), the top of the mandrel is detachably connected with the rotary power device, and the bottom of the mandrel can be in threaded connection with an oil inlet of a cylinder to be tested;
a connecting pipe (2) having one end rigidly connected to the rotator (4) and the other end connected to a pressurizing pump (34);
the inner wall of the revolving body (4) is rotatably and hermetically connected with the surface of the mandrel (3) through a thread structure (5), a liquid gap (11) is formed in the waist of the thread occlusal surface of the inner wall and the surface of the mandrel, the liquid gap (11) is always communicated with the inner cavity of the connecting pipe (2), a bent channel (10) is formed in the mandrel (3) so that one end is always communicated with the liquid gap (11) in the rotation process of the bent channel, and the other end is always communicated with the oil inlet of the cylinder to be tested.
2. The hydraulic cylinder pressing test device according to claim 1, wherein an inner wall of the revolution body (4) is provided with a concave-in structure to form a liquid gap (11) with a circumferential surface of the spindle (3);
the circumferential surface of the mandrel (3) is provided with a ring bulge which is embedded in the ring concave structure so as to limit the axial positions of the mandrel (3) and the revolving body (4).
3. The hydraulic cylinder pressing test device according to claim 2, wherein a sealing ring (6) is sleeved at the bottom of the mandrel (3) through a groove.
4. A hydraulic cylinder pressing test device according to claim 3, characterized in that the connecting pipe (2) is always connected to the pressing pump (34) via an adapter (1).
5. The hydraulic cylinder pressing test device according to claim 4, further comprising a workbench (12), wherein two plate bodies (14) are slidably and lockably mounted on the workbench (12) through a first slide rail (13), a slide groove (15) is formed in each plate body (14), a clamping bottom plate (16) is slidably mounted in each slide groove (15), a second slide rail (17) is formed in the outer side of each clamping bottom plate (16), a clamping top plate (18) is detachably mounted at the top end of the second slide rail (17), side plates (19) are connected to the same side of each plate body (14), a supporting rod (20) is detachably mounted at the same side of each side plate (19), a mounting cross plate (21) extending towards the center of the workbench (12) is slidably and lockably mounted on each supporting rod (20), and a mounting hole is formed in each mounting cross plate (21) so as to socket the revolving body (4) and lock with the revolving body (4).
6. The hydraulic cylinder pressing test device according to claim 5, wherein an upper bracket (22) is arranged on one side, close to a side plate (19), of the workbench (12), a suspension mounting table (23) parallel to a table top of the workbench (12) is mounted on the upper bracket (22), a driving motor (24) is fixedly mounted on the suspension mounting table (23), an output shaft of the driving motor (24) penetrates through the suspension mounting table (23) and fixedly sleeved with a first transmission shaft (25), a second transmission shaft (26) is sleeved on the top end of the first transmission shaft (25) in a linear sliding mode, and rotary transmission is further performed between the first transmission shaft (25) and the second transmission shaft (26) through key groove matching of a spline (27), a suspension plate (28) is arranged at the bottom end of the second transmission shaft (26), and a central line of the suspension plate (28) is rotatably mounted on the second transmission shaft (26) through a penetrating bearing (29), and the suspension plate (28) is further connected with the mounting table (23) through a group of telescopic rods (30).
7. The hydraulic cylinder pressing test device according to claim 6, wherein a parallel transverse plate (31) is further installed in parallel above the installation transverse plate (21), a driving sleeve (32) is installed on the parallel transverse plate (31) in a rotating mode, the driving sleeve (32) is sleeved at the top end of the mandrel (3), an elastic transmission shaft (33) is installed on the driving sleeve (32) through an inserting structure, and the top end of the elastic transmission shaft (33) is fixedly connected with the bottom end of the transmission shaft II (26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311465782.1A CN117212299B (en) | 2023-11-07 | 2023-11-07 | Hydraulic cylinder pressing testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311465782.1A CN117212299B (en) | 2023-11-07 | 2023-11-07 | Hydraulic cylinder pressing testing device |
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| CN117212299A CN117212299A (en) | 2023-12-12 |
| CN117212299B true CN117212299B (en) | 2024-01-16 |
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| CN2751473Y (en) * | 2004-12-06 | 2006-01-11 | 徐州工程机械科技股份有限公司徐工研究院 | Multi-path central rotation joint for water/electricity/liquid |
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