Through channel test bed

Abstract

The invention provides a through channel test bed, which belongs to the technical field of through channel test beds and comprises a base, two groups of steel products are fixedly connected to the upper end of the base, a group of hydraulic cylinders are arranged above each group of steel products, an annular seat is arranged above each group of hydraulic cylinders, and a plurality of horizontal hooke joints are arranged at the lower end of each annular seat and the upper end of each steel product. The horizontal hooke joint and the annular seat as well as the horizontal hooke joint and the steel are connected through a plurality of connecting pieces, the inner side of the annular seat is rotationally connected with a gear ring, the lower end of the annular seat is fixedly connected with a servo motor, the output end of the servo motor extends to the inner side of the gear ring and is fixedly connected with a gear, the gear and the gear ring are meshed with each other, and the upper end of the gear ring is fixedly connected with a frame; and a through channel body is arranged between the two groups of frames. The problem that the accuracy of the through channel test cannot be ensured due to the fact that the conclusion obtained by the through channel test cannot be close to the performance displayed by the through channel in the real vehicle driving state because the existing through channel test bench cannot really simulate the driving of the vehicle is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of gangway test benches, and particularly relates to a gangway test bench. Background Art

[0002] As is well known, a gangway is an important component on vehicles such as high-speed trains and subways. The gangway can connect adjacent carriages and is a flexible and movable part on the vehicle, adapting to the operation of the vehicle on underground, ground, and elevated lines, enabling passengers to safely pass through between vehicles. The gangway mainly consists of a folding awning, a wall panel, a transition plate, and a roof panel. When manufacturing the gangway, performance tests such as durability need to be carried out. Through relevant performance test experiments, problems existing in the reliability aspect of the product design and manufacturing process can be found, so as to facilitate improved design or improvement of the process level.

[0003] The existing gangway test benches cannot truly simulate the driving of vehicles, resulting in the conclusion obtained from the gangway test not being able to approach the performance shown by the gangway under the real vehicle driving state, and thus unable to ensure the accuracy of the gangway test. Summary of the Invention

[0004] The present invention provides a gangway test bench, aiming to solve the problem that the existing gangway test benches cannot truly simulate the driving of vehicles, resulting in the conclusion obtained from the gangway test not being able to approach the performance shown by the gangway under the real vehicle driving state, and thus unable to ensure the accuracy of the gangway test.

[0005] An embodiment of the present invention provides a gangway test bench, which includes a base. Two groups of steel materials are fixedly connected to the upper end of the base. A group of hydraulic cylinders is installed above each group of steel materials. A ring seat is installed above each group of hydraulic cylinders. A number of horizontal Hooke joints are installed at the lower end of the ring seat and the upper end of the steel materials. The horizontal Hooke joints are connected to the ring seat and the steel materials respectively through a number of connecting pieces. A gear ring is rotatably connected inside the ring seat. A servo motor is fixedly connected to the lower end of the ring seat. The output end of the servo motor extends into the inner side of the gear ring and is fixedly connected to a gear. The gear meshes with the gear ring. A frame is fixedly connected to the upper end of the gear ring. A gangway body is installed between the two frames.

[0006] Further, a diagonal ladder is welded to the side of the frame.

[0007] Further, the connecting piece includes a cylindrical groove reserved on the horizontal Hooke joint and the ring seat. A thread is reserved on the inner circumferential surface of the cylindrical groove. The upper end of the cylindrical groove on the ring seat is connected to a round opening; A lead screw is screwed into the cylindrical groove. A multi-prism is installed at the lower end of the lead screw. A prism opening is reserved at the lower end of the multi-prism; A connecting unit and a vertical movement unit are installed at the upper end of the lead screw; A stop unit for stopping the connecting unit is installed in the prism opening; An engaging unit for stopping the vertical movement unit is installed at the upper end of the prism opening. The connecting unit includes an adapter cylinder A installed at the upper end of the lead screw. The upper end of the adapter cylinder A is fixedly connected to an adapter cylinder B. The diameter of the outer side of the adapter cylinder A is smaller than the diameter of the inside of the adapter cylinder B. A blocking platform C is fixedly connected to the inner surface of the adapter cylinder A. An elastic member C is fixedly connected to the upper end of the blocking platform C. The side of the elastic member C farther from the blocking platform C is fixedly connected to a moving platform two, and the moving platform two is located inside the adapter cylinder B. The moving platform two includes a conical end A, a rod body C, and a conical end B. The rod body C is located between the conical end A and the conical end B. The outer surfaces of the conical end A, the rod body C, and the conical end B form an annular opening. Steel balls are installed in the annular opening. A through opening is reserved on the circumferential surface of the adapter cylinder B. The steel balls cooperate with the through opening. The lower end of the moving platform two is fixedly connected to a connecting rod. The side of the connecting rod farther from the moving platform two passes through the center of the blocking platform C. The lower end of the blocking platform C is fixedly connected to an inner cylinder. The vertical movement unit includes a bearing frame fixedly connected to the lower end of the adapter cylinder A. An elastic member B is fixedly connected in the bearing frame. An assembly chamber is reserved inside the lead screw. The assembly chamber is connected to the prism opening. A blocking platform B is fixedly connected to the inner circumferential surface of the assembly chamber. The side of the elastic member B farther from the bearing frame is fixedly connected to the upper wall surface of the blocking platform B. The stopping unit includes a columnar opening B reserved inside the multi - prism. A rotating rod is screwed in the columnar opening B. The rotating rod includes a rod body A and a threaded end. Threads are reserved on the outer circumferential surface of the threaded end. An engaging port is reserved on the connecting rod. Threads are reserved on the inner surface of the engaging port. The threaded end and the engaging port are threadedly connected to each other through the threads. A columnar opening A is reserved on the inner cylinder. One side of the rod body A passes through the inside of the columnar opening A. A movement opening is reserved in the multi - prism. The movement opening is connected to the prism opening. The rotating rod is located in the movement opening. A groove is reserved on one side of the multi - prism. The groove is connected to the movement opening.

[0008] Furthermore, a storage chamber is reserved on the inner circumferential surface of the adapter cylinder B. The outer surface of the steel ball is in contact with the inner surface of the storage chamber. The storage chamber is connected to the through opening.

[0009] Furthermore, the side of the adapter cylinder A farther from the adapter cylinder B is located inside the assembly chamber, and one side of the adapter cylinder A is movably connected to the assembly chamber.

[0010] Furthermore, one side of the connecting rod passes through the inside of the inner cylinder. The axis of the inner cylinder coincides with the axis of the connecting rod. A columnar opening D is reserved in the center of the blocking platform B. One side of the inner cylinder passes through the inside of the columnar opening D.

[0011] Furthermore, a blocking platform A is fixedly connected to the inner circumferential surface of the assembly chamber. A columnar opening C is reserved in the center of the blocking platform A. One side of the inner cylinder passes through the inside of the columnar opening C.

[0012] Further, the splicing unit includes a rotating opening reserved at the upper end of the prism opening. Rotating bars are rotatably connected to both sides of the inner surface of the rotating opening. One side of the rotating bar is fixedly connected to a rotating column, and splicing blocks are fixedly connected to the outer peripheral surface of the rotating column. Splicing openings are reserved on the outer peripheral surface of the inner cylinder, and one side of the splicing block is located in the splicing opening.

[0013] Further, an elastic member A is fixedly connected to the inner peripheral surface of the assembly chamber, and the side of the elastic member A farther from the inner peripheral surface of the assembly chamber is fixedly connected to the outer surface of one side of the splicing block.

[0014] Further, a changing platform 1 is fixedly connected to the side of the multi-prism protruding out of the rotating rod, and a number of notches are reserved on the outer peripheral surface of the changing platform 1 along its axis.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention simulates the activities occurring during vehicle driving through the telescopic cooperation of each hydraulic cylinder, and through the rotation of the servo motor to drive the gear to rotate, the gear drives the toothed ring to rotate, and then drives the frame to rotate, so as to simulate the action of the vehicle turning, thereby realizing the real simulation of vehicle driving, and conducting tests on the through-channel body to ensure the accuracy of the tests on the through-channel body. And through the installation of the connecting piece, the stability of the connection between the horizontal Hooke joint and the annular seat and the steel can be ensured, so as to prevent the disassembly of the horizontal Hooke joint caused by the vibration during the test and ensure the normal test of the device.

[0016] 2. Through the installation of the connecting piece, and through the installation of the coupling unit and the positioning unit, the user rotates the prism disassembly rod and can then drive the multi-prism and the lead screw to rotate, achieving the purpose of connecting the horizontal Hooke joint and the annular seat. After the connection is completed, the user first rotates the changing platform 1 to separate the threaded end on one side of the rotating rod from the connecting port, and then takes the rotating rod out of the prism opening, and then cancels the positioning between the inner cylinder and the connecting rod. When the positioning between the inner cylinder and the connecting rod is cancelled, the elastic member C compressed in the connecting cylinder A immediately returns to its original position, and then the changing platform 2 can be pressed against the upper end of the connecting cylinder B. With the change of the changing platform 2, the steel balls in the storage chamber can be ejected from the through-hole, thereby extending the radial span of the connecting cylinder B, and then preventing the change of the lead screw caused by vibration and ensuring the connection function of the lead screw; And through the installation of the vertical movement unit, after the lead screw is screwed through the prism disassembly rod, the user takes away the prism disassembly rod in the prism opening. At this time, the pressing effect at the lower end of the inner cylinder is immediately eliminated, so the elastic member B fixedly connected to the upper end of the blocking platform B and in the extended state immediately returns to its normal state, and then can drive the connecting cylinder A to move downward. During the process of pulling the connecting cylinder A to move downward, the steel balls move downward together with the connecting cylinder B until the steel balls are pressed against the lower wall surface in the round opening, thereby preventing the existence of a changing gap between the steel balls and the outer surface of the upper end of the annular seat and further strengthening the stable connection function of this connecting piece.

[0017] Other features and advantages of the present invention will be set forth in the following description, and in part will be obvious from the description, or may be learned by practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the structure particularly pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic perspective view of an embodiment of the present invention; Figure 2 is an embodiment of the present invention Figure 1 a schematic enlarged view of the structure at E; Figure 3 is a schematic front view of an embodiment of the present invention; Figure 4 is a schematic perspective view of the connecting member of an embodiment of the present invention Figure 1 ; Figure 5 is a schematic perspective view of the connecting member of an embodiment of the present invention Figure 2 ; Figure 6 is a schematic view of the multi-prism structure of an embodiment of the present invention; Figure 7 is a schematic top view of the multi-prism of an embodiment of the present invention; Figure 8 is a schematic cross-sectional view of the connecting member of an embodiment of the present invention; Figure 9 is an embodiment of the present invention Figure 8 a schematic enlarged view of the structure at F; Figure 10 is a schematic view of the use structure of the prism disassembling rod of an embodiment of the present invention; Reference Signs: 1, base; 2, steel; 3, hydraulic cylinder; 4, annular seat; 5, horizontal Hooke hinge; 6, connecting piece; 7, toothed ring; 8, servo motor; 9, gear; 10, frame; 11, through-channel body; 12, inclined ladder; 61, lead screw; 62, multi-prism; 63, prism opening; 64, connecting cylinder A; 65, connecting cylinder B; 66, through opening; 67, inner cylinder; 68, connecting rod; 69, rotating opening; 610, rotating column; 611, embedding block; 612, threaded end; 613, rod body A; 614, moving platform 1; 615, groove; 616, rotating rod; 617, assembly room; 618, elastic member A; 619, embedding opening; 620, connecting opening; 621, columnar opening A; 622, columnar opening B; 623, moving opening; 624, blocking platform A; 625, columnar opening C; 626, blocking platform B; 627, columnar opening D; 628, elastic member B; 629, bearing frame; 630, blocking platform C; 631, moving platform 2; 632, conical end A; 633, rod body C; 634, conical end B; 635, steel ball; 636, elastic member C; 637, storage room; 638, prism disassembling rod; 639, columnar groove; 640, round opening. Detailed Implementation Manner

[0019] In order to make the objectives, technical solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the specific embodiments of the present invention. The same reference signs in the drawings represent the same components. It should be noted that the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0020] Referring to Figures 1 - 3 , the through-channel test bench proposed in the embodiment of the present invention includes a base 1. Two groups of steels 2 are fixedly connected to the upper end of the base 1. Above each group of steels 2, a group of hydraulic cylinders 3 are installed. Above each group of hydraulic cylinders 3, an annular seat 4 is installed. A number of horizontal Hooke hinges 5 are installed at the lower end of the annular seat 4 and the upper end of the steel 2. The horizontal Hooke hinges 5 correspond to the hydraulic cylinders 3. The horizontal Hooke hinges 5 are connected to the annular seat 4 and the horizontal Hooke hinges 5 are connected to the steel 2 through a number of connecting pieces 6. A toothed ring 7 is rotatably connected inside the annular seat 4. A servo motor 8 is fixedly connected to the lower end of the annular seat 4. The output end of the servo motor 8 extends to the inside of the toothed ring 7 and is fixedly connected to a gear 9. The gear 9 and the toothed ring 7 are engaged with each other. The upper end of the toothed ring 7 is fixedly connected to a frame 10. A through-channel body 11 is installed between the two frames 10.

[0021] The expansion and contraction of each hydraulic cylinder 3 are used to simulate the activities during vehicle driving, and the servo motor 8 drives the gear 9 to rotate. The gear 9 drives the gear ring 7 to rotate, and then drives the frame 10 to rotate, so as to simulate the action of the vehicle turning, thus realizing the real simulation of vehicle driving, and conducting tests on the gangway body 11 to ensure the accuracy of the tests on the gangway body 11. And through the installation of the connecting piece 6, the stability of the connection between the horizontal Hooke joint 5, the annular seat 4 and the steel 2 can be ensured, so as to prevent the disassembly of the horizontal Hooke joint 5 caused by the vibration during the test and ensure the normal test of the device.

[0022] Refer to Figure 1 And Figure 3 , an inclined ladder 12 is welded to the side of the frame 10, which is convenient for the staff to get onto the frame 10 to perform relevant operations.

[0023] Refer to Figures 4 - 10 , since the horizontal Hooke joint 5 is connected to the annular seat 4 and the horizontal Hooke joint 5 is connected to the steel 2 through a number of connecting pieces 6, therefore, in this embodiment, the horizontal Hooke joint 5 and the annular seat 4 are taken as examples for detailed description. The connecting piece 6 includes a columnar groove 639 reserved on the horizontal Hooke joint 5 and the annular seat 4. Threads are reserved on the inner circumferential surface of the columnar groove 639. The columnar groove 639 on the horizontal Hooke joint 5 penetrates through the vertical two wall surfaces of the horizontal Hooke joint 5. The upper end of the columnar groove 639 on the annular seat 4 is connected to a round opening 640, and the diameter of the round opening 640 is larger than the diameter of the columnar groove 639; A lead screw 61 is threaded in the columnar groove 639. A multi-prism 62 is installed at the lower end of the lead screw 61, and a prism opening 63 is reserved at the lower end of the multi-prism 62; A connecting unit and a vertical movement unit are installed at the upper end of the lead screw 61; A stop unit for stopping the connecting unit is installed in the prism opening 63; An embedding unit for stopping the vertical movement unit is installed at the upper end of the prism opening 63; The connecting unit includes a connecting cylinder A64 installed at the upper end of the lead screw 61. The upper end of the connecting cylinder A64 is fixedly connected to a connecting cylinder B65. The outer diameter of the connecting cylinder A64 is smaller than the inner diameter of the connecting cylinder B65. A blocking platform C630 is fixedly connected to the inner surface of the connecting cylinder A64. An elastic member C636 is fixedly connected to the upper end of the blocking platform C630. The side of the elastic member C636 farther from the blocking platform C630 is fixedly connected to a moving platform two 631, and the moving platform two 631 is located inside the connecting cylinder B65; The second moving platform 631 includes a conical end A632, a rod body C633 and a conical end B634. The rod body C633 is located between the conical end A632 and the conical end B634. The outer surfaces of the conical end A632, the rod body C633 and the conical end B634 form a circular opening, in which steel balls 635 are installed. A through hole 66 is reserved on the circumferential surface of the connecting cylinder B65. The steel balls 635 and the through hole 66 cooperate with each other. The lower end of the second moving platform 631 is fixedly connected with a connecting rod 68. The farther side of the connecting rod 68 from the second moving platform 631 penetrates through the center of the blocking platform C630. After one side of the prism disassembling rod 638 is inserted into the prism opening 63, the user rotates the prism disassembling rod 638 and then can drive the multi-prism 62 and the lead screw 61 to rotate again to achieve the purpose of connecting the horizontal Hooke hinge 5 and the annular seat 4. After the connection is completed, the user first rotates the first moving platform 614 to separate the threaded end 612 on one side of the rotating rod 616 from the connection port 620, and then takes out the rotating rod 616 from the prism opening 63, and then cancels the position stop between the inner cylinder 67 and the connecting rod 68. When the position stop between the inner cylinder 67 and the connecting rod 68 is cancelled, the elastic member C636 compressed in the connecting cylinder A64 immediately returns to its original position, and then the second moving platform 631 can be pressed against the upper end of the connecting cylinder B65. With the movement of the second moving platform 631, the steel balls 635 in the storage chamber 637 can be ejected from the through hole 66, thereby extending the radial span of the connecting cylinder B65, and then the change of the lead screw 61 caused by vibration can be stopped to ensure the connection function of the lead screw 61.

[0024] A storage chamber 637 is reserved on the inner circumferential surface of the connecting cylinder B65. The outer surface of the steel ball 635 and the inner surface of the storage chamber 637 are in contact with each other. The storage chamber 637 and the through hole 66 are connected to each other.

[0025] The vertical movement unit includes a carrier 629 fixedly connected to the lower end of the connecting cylinder A64. An elastic member B628 is fixedly connected in the carrier 629. An assembly chamber 617 is reserved inside the lead screw 61. The assembly chamber 617 communicates with the prism opening 63. A blocking platform B626 is fixedly connected to the inner circumferential surface of the assembly chamber 617. The side of the elastic member B628 farther from the carrier 629 is fixedly connected to the upper wall surface of the blocking platform B626. The side of the connecting cylinder A64 farther from the connecting cylinder B65 is inside the assembly chamber 617. One side of the connecting cylinder A64 is movably connected to the assembly chamber 617. The lower end of the blocking platform C630 is fixedly connected to the inner cylinder 67. One side of the connecting rod 68 passes through the inside of the inner cylinder 67. The axis of the inner cylinder 67 coincides with the axis of the connecting rod 68. A columnar opening D627 is reserved in the middle of the blocking platform B626. One side of the inner cylinder 67 passes through the inside of the columnar opening D627. When the prism disassembling rod 638 in the prism opening 63 is taken away, the pressing effect at the lower end of the inner cylinder 67 is immediately eliminated. Therefore, the elastic member B628 fixedly connected to the upper end of the blocking platform B626 and in the extended state immediately returns to its normal state, and then can pull the connecting cylinder A64 to move downward. During the process of pulling the connecting cylinder A64 to move downward, the steel ball 635 moves downward together with the connecting cylinder B65 until the steel ball 635 presses against the lower wall surface in the round opening 640, thereby preventing a variable gap from existing between the steel ball 635 and the outer surface of the upper end of the annular seat 4, and further strengthening the stable connection function of this connecting member 6.

[0026] A blocking platform A624 is fixedly connected to the inner circumferential surface of the assembly chamber 617. A columnar opening C625 is reserved in the middle of the blocking platform A624. One side of the inner cylinder 67 passes through the inside of the columnar opening C625. Through the columnar opening C625, the smoothness during the vertical movement of the inner cylinder 67 can be ensured, achieving the purpose of excellent guiding and restraining.

[0027] The embedding unit includes a rotating opening 69 reserved at the upper end of the prism opening 63. Rotating bars are screwed on both sides of the inner surface of the rotating opening 69. One side of the rotating bar is fixedly connected to a rotating column 610. Embedding blocks 611 are fixedly connected to the outer circumferential surface of the rotating column 610. An embedding opening 619 is reserved on the outer circumferential surface of the inner cylinder 67. One side of the embedding block 611 is in the embedding opening 619. An elastic member A618 is fixedly connected to the inner circumferential surface of the assembly chamber 617. The side of the elastic member A618 farther from the inner circumferential surface of the assembly chamber 617 is fixedly connected to the outer surface of one side of the embedding block 611. When this connecting member 6 does not perform the connection at the beginning, one side of the embedding block 611 is embedded in the embedding opening 619, thereby preventing the situation that the elastic member B628 in the extended state returns to its position and pushes the inner cylinder 67 downward.

[0028] The stop unit includes a columnar port B622 reserved inside the polygonal prism 62. A rotating rod 616 is screwed in the columnar port B622. The rotating rod 616 includes a rod body A613 and a threaded end 612. A thread is reserved on the outer peripheral surface of the threaded end 612. An interface port 620 is reserved on the connecting rod 68. A thread is reserved on the inner surface of the interface port 620. The threaded end 612 and the interface port 620 are threadedly connected to each other through the threads. A columnar port A621 is reserved on the inner cylinder 67. One side of the rod body A613 penetrates from the inside of the columnar port A621. A variable port 623 is reserved in the polygonal prism 62. The variable port 623 is connected to the prism port 63. The rotating rod 616 is located in the variable port 623. A groove 615 is reserved on one side of the polygonal prism 62. The groove 615 is connected to the variable port 623. After the connection is completed, the user first rotates the first moving platform 614 to separate the threaded end 612 on one side of the rotating rod 616 from the interface port 620, and then removes the rotating rod 616 from the prism port 63, and then cancels the connection between the inner cylinder 67 and the connecting rod 68.

[0029] The rotating rod 616 is fixedly connected to the first moving platform 614 on the outer side of the polygonal prism 62. A plurality of notches are reserved on the outer peripheral surface of the first moving platform 614 along its axis, so that the user can conveniently rotate the rotating rod 616 to separate the threaded end 612 from the interface port 620.

[0030] Columnar grooves 639 are reserved on both the horizontal Hook hinge 5 and the annular seat 4. Threads are reserved on the inner peripheral surface of the columnar groove 639. The columnar groove 639 on the horizontal Hook hinge 5 penetrates through the vertical two wall surfaces of the horizontal Hook hinge 5. The upper end of the columnar groove 639 on the annular seat 4 is connected to a round port 640. The diameter of the round port 640 is larger than the diameter of the columnar groove 639.

[0031] When using the connector 6 to connect the horizontal Hook hinge 5 and the annular seat 4 and the horizontal Hook hinge 5 and the steel 2, when the user connects the horizontal Hook hinge 5 and the annular seat 4 through the connector 6, the polygonal prism 62 can be first twisted. When the polygonal prism 62 rotates, it can drive the lead screw 61 to rotate together. The lead screw 61 is threadedly connected to the columnar groove 639 reserved in the annular seat 4. Corresponding threads are reserved in the columnar groove 639. During the period when the user twists the polygonal prism 62, the threaded end 612 on the rotating rod 616 is threadedly connected to the interface port 620 on the connecting rod 68, so as to ensure that the inner cylinder 67 and the connecting rod 68 always maintain stability during the rotation of the lead screw 61; When the user can no longer twist the connecting piece 6, the user can insert one side of the outer prism disassembling rod 638 into the prism opening 63 and press the prism disassembling rod 638 upward so that its upper end fits against the upper wall surface of the prism opening 63. During the upward pressing of the prism disassembling rod 638, the pressing action of the user on the prism disassembling rod 638 is transmitted to the lower ends of the inner cylinder 67 and the connecting rod 68, and then the inner cylinder 67 and the connecting rod 68 can be pressed to the position where the upper wall surface is flush with the lower wall surface of the prism opening 63. During the period when the connecting rod 68 is under pressure, the rotating rod 616 moves upward together, always ensuring that the inner cylinder 67 and the connecting rod 68 remain connected. During the upward pressing of the inner cylinder 67, the engaging block 611 can be pushed open, so that the engaging block 611 moves out of the engaging opening 619, and then the positioning of several engaging blocks 611 on the inner cylinder 67 is cancelled. When the engaging block 611 is pushed open, the elastic member A618 in the extended state immediately returns to its normal state, and then can pull the engaging block 611 to move towards the direction close to the inner surface of the assembly chamber 617. At this time, the edge of the engaging block 611 is separated from the outer peripheral surface of the inner cylinder 67, and then the vertical movement of the subsequent inner cylinder 67 process is ensured; After one side of the prism disassembling rod 638 is inserted into the prism opening 63, the user rotates the prism disassembling rod 638, and then can re-drive the multi-prism 62 and the lead screw 61 to rotate, so as to achieve the connection of the horizontal Hooke hinge 5 and the annular seat 4. After the connection is completed, the user first rotates the moving platform 614, so that the threaded end 612 on one side of the rotating rod 616 is separated from the engaging port 620, and then takes the rotating rod 616 out of the prism opening 63, and then cancels the positioning between the inner cylinder 67 and the connecting rod 68. When the positioning between the inner cylinder 67 and the connecting rod 68 is cancelled, the elastic member C636 compressed in the connecting cylinder A64 immediately returns to its original position, and then can press the moving platform 631 towards the upper end of the connecting cylinder B65. With the movement of the moving platform 631, the steel ball 635 in the storage chamber 637 can be pushed out of the through hole 66, and then the radial span of the connecting cylinder B65 is extended, and then the change of the lead screw 61 caused by vibration can be stopped, ensuring the connection function of the lead screw 61; Then the user takes out the prism disassembling rod 638 in the prism opening 63. At this time, the pressing action at the lower end of the inner cylinder 67 is immediately eliminated. Therefore, the elastic member B628 fixedly connected to the upper end of the blocking platform B626 in the extended state immediately returns to its normal state, and then can pull the connecting cylinder A64 to move downward. During the downward movement of the connecting cylinder A64, the steel ball 635 moves downward together with the connecting cylinder B65 until the steel ball 635 is pressed against the lower wall surface in the round opening 640, so as to prevent a changing gap from existing between the steel ball 635 and the outer surface of the upper end of the annular seat 4, and further strengthen the stable connection function of this connecting piece 6.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Gangway test bench, characterized in that, It includes a base. At the upper end of the base, two groups of steel materials are fixedly connected. Above each group of steel materials, a hydraulic cylinder is installed. Above each hydraulic cylinder, an annular seat is installed. At the lower end of the annular seat and the upper end of the steel materials, a number of horizontal Hooke joints are installed. The horizontal Hooke joints are connected to the annular seat and the steel materials respectively through a number of connecting pieces. Inside the annular seat, a toothed ring is screwed. At the lower end of the annular seat, a servo motor is fixedly connected. The output end of the servo motor extends to the inside of the toothed ring and is fixedly connected with a gear. The gear meshes with the toothed ring. At the upper end of the toothed ring, a frame is fixedly connected. Between the two frames, a through-channel body is installed.

2. The gangway test bench according to claim 1, characterized in that: An inclined ladder is welded to the side of the frame.

3. The gangway test bench according to claim 1, wherein: The connecting piece includes a cylindrical groove reserved on the horizontal Hooke joint and the annular seat. On the inner circumferential surface of the cylindrical groove, a thread is reserved. The upper end of the cylindrical groove on the annular seat is connected to a round opening. A lead screw is screwed in the cylindrical groove. At the lower end of the lead screw, a multi-prism is installed. At the lower end of the multi-prism, a prism opening is reserved. At the upper end of the lead screw, a connecting unit and a vertical movement unit are installed. In the prism opening, a positioning unit for positioning the connecting unit is installed. At the upper end of the prism opening, an embedding unit for positioning the vertical movement unit is installed. The connecting unit includes a connecting cylinder A installed at the upper end of the lead screw. At the upper end of the connecting cylinder A, a connecting cylinder B is fixedly connected. The diameter of the outer side of the connecting cylinder A is smaller than the diameter of the inside of the connecting cylinder B. On the inner surface of the connecting cylinder A, a blocking platform C is fixedly connected. At the upper end of the blocking platform C, an elastic member C is fixedly connected. The side of the elastic member C farther from the blocking platform C is fixedly connected with a moving platform 2. The moving platform 2 is located inside the connecting cylinder B. The moving platform 2 includes a conical end A, a rod body C and a conical end B. The rod body C is located between the conical end A and the conical end B. The outer surfaces of the conical end A, the rod body C and the conical end B form an annular opening. In the annular opening, steel balls are installed. On the circumferential surface of the connecting cylinder B, a through-opening is reserved. The steel balls cooperate with the through-opening. At the lower end of the moving platform 2, a connecting rod is fixedly connected. The side of the connecting rod farther from the moving platform 2 passes through the center of the blocking platform C. At the lower end of the blocking platform C, an inner cylinder is fixedly connected. The vertical movement unit includes a bearing frame fixedly connected to the lower end of the connecting cylinder A. In the bearing frame, an elastic member B is fixedly connected. An assembly chamber is reserved inside the lead screw. The assembly chamber is connected to the prism opening. On the inner circumferential surface of the assembly chamber, a blocking platform B is fixedly connected. The side of the elastic member B farther from the bearing frame is fixedly connected to the upper wall surface of the blocking platform B. The positioning unit includes a cylindrical opening B reserved inside the multi-prism. In the cylindrical opening B, a rotating rod is screwed. The rotating rod includes a rod body A and a threaded end. On the outer circumferential surface of the threaded end, a thread is reserved. On the connecting rod, a connecting opening is reserved. On the inner surface of the connecting opening, a thread is reserved. The threaded end and the connecting opening are screwed to each other through the thread. On the inner cylinder, a cylindrical opening A is reserved. One side of the rod body A passes through the inside of the cylindrical opening A. In the multi-prism, a changing opening is reserved. The changing opening is connected to the prism opening. The rotating rod is located in the changing opening. On one side of the multi-prism, a groove is reserved. The groove is connected to the changing opening.

4. The gangway test bench according to claim 3, characterized in that: On the inner circumferential surface of the connecting cylinder B, a storage chamber is reserved. The outer surface of the steel ball is in contact with the inner surface of the storage chamber. The storage chamber is connected to the through-opening.

5. The gangway test bench according to claim 4, characterized in that: The side of the connecting cylinder A farther from the connecting cylinder B is located inside the assembly chamber. One side of the connecting cylinder A is movably connected to the assembly chamber.

6. The gangway test bench according to claim 4, characterized in that: One side of the relay rod penetrates from the inside of the inner cylinder, and the axis of the inner cylinder coincides with the axis of the relay rod. A columnar opening D is reserved in the center of the blocking platform B, and one side of the inner cylinder penetrates from the inside of the columnar opening D.

7. The through-channel test bench according to claim 6, characterized in that: The blocking platform A is fixedly connected to the inner circumferential surface of the assembly chamber. A columnar opening C is reserved in the center of the blocking platform A, and one side of the inner cylinder penetrates from the inside of the columnar opening C.

8. The through-channel test bench according to claim 7, characterized in that: The fitting unit includes a rotating opening reserved at the upper end of the prism opening. Rotating bars are rotatably connected to both sides of the inner surface of the rotating opening. One side of the rotating bar is fixedly connected to a rotating column, and fitting blocks are fixedly connected to the outer circumferential surface of the rotating column. Fitting openings are reserved on the outer circumferential surface of the inner cylinder, and one side of the fitting block is located in the fitting opening.

9. The through-channel test bench according to claim 8, characterized in that: The elastic member A is fixedly connected to the inner circumferential surface of the assembly chamber, and the side of the elastic member A farther from the inner circumferential surface of the assembly chamber is fixedly connected to the outer surface of one side of the fitting block.

10. The through-channel test bench according to claim 3, characterized in that: One side of the rotating rod located outside the prism is fixedly connected to the changing platform I. A number of notches are reserved on the outer circumferential surface of the changing platform I along its axis.

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