A pneumatic locking connection mechanism for the front and rear tow hooks of a combined road and rail transport vehicle

Abstract

This application relates to a pneumatic locking connection mechanism for the front and rear tow hooks of a combined road and rail transport vehicle, belonging to the field of combined road and rail transport equipment. Installed on a bogie, it includes a front tow hook frame and a rear tow hook frame connected to opposite sides of the bogie. A protruding plate is integrally formed on the side of the front tow hook frame away from the rear tow hook frame, and a groove adapted to the protruding plate is formed on the side of the rear tow hook frame away from the front tow hook frame. A mounting hole communicating with the groove is formed on the rear tow hook frame, and a mating hole corresponding to the mounting hole is formed on the protruding plate. A tapered pin is inserted into the mounting hole. A control component for controlling the movement of the tapered pin along the height direction is provided on the rear tow hook frame. A sensor for detecting the position of the front tow hook frame is provided in the groove. The pneumatic locking connection mechanism also includes an intelligent controller, and both the sensor and the control component are electrically connected to the intelligent controller. This application has the effect of improving the efficiency of cargo transportation.

Description

Technical Field

[0001] This application relates to the field of dual-use road and rail vehicles, and in particular to a pneumatic locking connection mechanism for the front and rear tow hooks of a dual-use road and rail vehicle. Background Technology

[0002] To improve freight transport efficiency and further reduce logistics costs, combined transport modes such as air, rail, road, and water have been developed, with road-rail intermodal transport being the most common. One way to achieve road-rail intermodal transport is for operators to drive a semi-trailer onto the rails, unload the semi-trailer, and then connect the semi-trailer to a special bogie to form a train. The semi-trailer and container cargo can then be pulled by a locomotive to form a freight train.

[0003] When trains are assembled, couplers are used to connect the front and rear of adjacent bogies. This method of assembly is a purely mechanical connection. In actual testing, it is affected by factors such as the site, product consistency differences, and different loads. It is difficult to align the front and rear bogies, which makes it impossible for the couplers of the two adjacent bogies to connect. Therefore, multiple workers are required to constantly adjust and correct the position during assembly, resulting in low cargo transportation efficiency. Summary of the Invention

[0004] In order to improve the efficiency of cargo transportation, this application provides a pneumatic locking connection mechanism for the front and rear tow hooks of a road-rail dual-purpose vehicle.

[0005] This application provides a pneumatic locking connection mechanism for the front and rear tow hooks of a combined road and rail transport vehicle, using the following technical solution:

[0006] A pneumatic locking connection mechanism for the front and rear tow hooks of a road-rail dual-transport vehicle is installed on a bogie. It includes a front tow hook frame and a rear tow hook frame connected to opposite sides of the bogie, respectively. The front tow hook frame has a protruding plate integrally formed on the side away from the rear tow hook frame, and the rear tow hook frame has a groove adapted to the protruding plate on the side away from the front tow hook frame.

[0007] The tail hook frame has a mounting hole communicating with the groove, and the protruding plate has a mating hole corresponding to the mounting hole. A tapered pin is inserted into the mounting hole.

[0008] The tail hook frame is equipped with a control component that controls the movement of the cone pin along the height direction. The groove is equipped with a sensor that detects the position of the front hook frame. The pneumatic locking connection mechanism also includes an intelligent controller. Both the sensor and the control component are electrically connected to the intelligent controller.

[0009] By adopting the above technical solution, when two bogies need to be connected and fixed, the operator controls the bogie to move, aligning the front tow hook of the bogie with the tail tow hook of the preceding bogie, and moving the convex plate of the following bogie into the groove. At the same time, the sensor detects the position of the convex plate and transmits the signal to the intelligent controller. The intelligent controller activates the control component, which drives the tapered pin to move upward, inserting the tapered pin into the mating hole. At this time, the tapered pin fixes the convex plate and the tail tow hook, thereby connecting and fixing the two bogies. When connecting two bogies, the sensor and the intelligent controller work to automatically align the two bogies, reducing the need for the operator to make constant adjustments when aligning the two bogies and improving the efficiency of cargo transportation.

[0010] Optionally, the control assembly includes a shaft rotatably connected to the tail hook frame, the axis of the shaft being perpendicular to the axis of the tapered pin, a rocker arm sleeved and fixed on the shaft, a hinge rod ball-jointed to the lower end of the tapered pin, one end of the rocker arm being hinged to the lower end of the hinge rod, a connecting plate fixedly connected to the shaft, and the control assembly further includes a drive component for driving the connecting plate to rotate.

[0011] By adopting the above technical solution, the intelligent controller controls the operation of the drive component. The drive component causes the connecting plate to rotate the axle from the front tow hook frame towards the tail tow hook frame. The axle drives the rocker arm to rotate, causing the end of the rocker arm near the hinge rod to move upward, thereby causing the hinge rod and the tapered pin to move upward. When the two bogies need to be disconnected, the intelligent controller controls the drive component to reset, thereby causing the connecting plate, axle, and rocker arm to rotate and reset. The side of the rocker arm near the hinge rod rotates downward, causing the hinge rod and the tapered pin to move downward until the tapered pin is reset. At this time, the two bogies are disconnected.

[0012] Optionally, the drive component includes a connecting rod hinged to the connecting plate, and the drive component also includes a cylinder mounted on the bogie, the telescopic rod of the cylinder being hinged to the connecting plate, and the air source of the cylinder being electrically connected to the intelligent controller.

[0013] By adopting the above technical solution, when the conical pin moves upward, the intelligent controller controls the air source of the cylinder to work, so that the extension rod of the cylinder drives the connecting rod to move away from the front tow hook frame. The movement of the connecting rod drives the corresponding end of the connecting plate to move away from the front tow hook frame, thereby causing the connecting plate to rotate from the front tow hook frame to the tail tow hook frame. When the conical pin moves downward, the intelligent controller controls the extension rod of the cylinder to drive the connecting rod and the connecting plate to reset, so that the shaft drives the rocker arm to rotate to the initial position. The rotation of the rocker arm pulls the hinge rod and the conical pin to move downward.

[0014] Optionally, the control component may also include a reset element that enables the taper pin to reset more effectively.

[0015] By adopting the above technical solution, the working assistance rocker arm rotates and resets, enabling the rocker arm to better pull the hinge rod and the tapered pin downwards, so that the tapered pin can be reset better.

[0016] Optionally, the reset component includes a connecting block hinged to the rocker arm. The connecting block is located on the side of the shaft away from the tapered pin. A reset spring is fixedly connected to the connecting block. A fixing tube is fixedly connected to the end of the reset spring away from the connecting block. The fixing tube is fixed to the bogie and is located on the side of the shaft away from the tapered pin. A guide rod is inserted into the reset spring. The guide rod is fixed to the connecting block. The guide rod passes through the fixing tube and is slidably inserted into the fixing tube.

[0017] By adopting the above technical solution, when the rocker arm rotates and pushes the hinge rod and the tapered pin to move upward, the side of the rocker arm close to the connecting block moves downward, and the rocker arm drives the connecting block to move. At the same time, the connecting block stretches the return spring. When the rocker arm pulls the hinge rod and the tapered pin to move downward, the return spring restores its deformation and pulls the connecting block and the corresponding side of the rocker arm to rotate back to the initial position, so that the rocker arm can better drive the hinge rod and the tapered pin to move downward and reset.

[0018] Optionally, the tail hook frame is further provided with a locking assembly for securing the front hook frame and the tail hook frame with a retaining cone pin.

[0019] By adopting the above technical solution, when the tapered pin is inserted into the mounting hole and mating hole to connect and fix the two bogies, the locking component limits the tapered pin, reducing the possibility of the tapered pin moving downward and disengaging from the mating hole, thereby reducing the possibility of the two bogies being accidentally disconnected.

[0020] Optionally, the locking mechanism includes a valve body that is threadedly connected to the tail hook frame, the valve body communicating with the mounting hole, the inner sidewall of the valve body protruding inward to form a convex ring, and a locking tongue that is slidably inserted into the valve body, the locking tongue being movable into the mounting hole;

[0021] The diameters at both ends of the latch are greater than the diameter in the middle of the latch. Both ends of the latch penetrate the valve body. The sidewall of the smaller diameter portion of the latch contacts the convex ring, thereby dividing the valve body into two chambers.

[0022] A valve spring is fitted onto the smaller diameter portion of the latch. The valve spring is located on the side of the convex ring near the mounting hole. One end of the valve spring is fixed to the convex ring, and the other end of the valve spring is fixed to the end face of the latch corresponding to the latch.

[0023] The valve body includes an air inlet pipe and an air outlet pipe located on the side of the convex ring away from the mounting hole. The air inlet pipe is connected to an air source, and an electrically controlled valve is installed on the air outlet pipe. Both the air source of the air inlet pipe and the electrically controlled valve on the air outlet pipe are electrically connected to the intelligent controller.

[0024] By adopting the above technical solution, in the initial state, the electrically controlled valve of the air outlet pipeline is in a normally closed state. Under the action of the valve spring, the locking tongue is located in the mounting hole. At this time, the locking tongue is located above the cone pin. The controller controls the air source of the air in the air inlet pipeline. The air source pumps a certain amount of high-pressure gas into the valve body. The air pressure in the valve body on the side of the convex ring away from the mounting hole gradually increases. The air pressure acts on the end face where the diameter of the locking tongue changes, thereby pushing the locking tongue to move out of the mounting hole. At the same time, it also compresses the valve spring. When the locking tongue is outside the mounting hole, the intelligent controller controls the cylinder to work, causing the cone pin to move upward.

[0025] When the tapered pin moves and inserts into the mating hole and the mounting hole, the intelligent controller first controls the electric valve of the air outlet pipe to open, and the gas in the valve body is discharged from the valve body, so that the air pressure on the side of the valve body away from the mounting hole gradually decreases. At the same time, the valve spring returns to its deformation and pushes the locking tongue to move into the mounting hole. The locking tongue moves to below the tapered pin and limits the tapered pin.

[0026] Optionally, a support plate is hinged to the end of the latch away from the mounting hole. The support plate is located outside the valve body, and a support plate is hinged to the end of the support plate away from the latch. The support plate is fixedly connected to the tail hook frame.

[0027] By adopting the above technical solution, when the locking tongue moves along the valve body, the movement of the locking tongue causes the support plate to rotate on the support plate. The cooperation between the support plate and the support plate can support the locking tongue and reduce the situation where the locking tongue rotates along the height direction.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By setting up front tow hooks, tail tow hooks, protruding plates, grooves, mounting holes, mating holes, tapered pins, control components, sensors, and intelligent controllers, the efficiency of cargo transportation is improved;

[0030] 2. By setting up a connecting block, a return spring, a fixing tube, and a guide rod, the rocker arm and the tapered pin can be reset more effectively;

[0031] 3. By setting the valve body, locking tongue, convex ring, valve spring, air inlet pipe and air outlet pipe, the conical pin can be limited. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the overall structure of the pneumatic locking connection mechanism in an embodiment of this application.

[0033] Figure 2 This is a cross-sectional view illustrating the connection relationship between the tapered pin and the front and rear tow hook frames in an embodiment of this application.

[0034] Figure 3This is a schematic diagram illustrating part of the structure of the control component in an embodiment of this application.

[0035] Figure 4 This is a schematic diagram illustrating the structure of the locking component in an embodiment of this application.

[0036] Figure 5 This is a cross-sectional view illustrating the structure of the locking component in an embodiment of this application.

[0037] Explanation of reference numerals in the attached drawings: 1. Bogie; 2. Front tow hook bracket; 21. Protruding plate; 22. Mating hole; 23. Ball bearing; 3. Tail tow hook bracket; 31. Groove; 32. Mounting hole; 33. Bushing; 4. Sensor; 5. Tapered pin; 6. Control assembly; 61. Shaft; 62. Rocker arm; 63. Hinge rod; 64. Connecting plate; 65. Drive component; 651. Connecting rod; 652. Cylinder; 66. Reset component; 661. Connecting block; 662. Reset spring; 663. Fixing tube; 664. Guide rod; 7. Locking assembly; 71. Valve body; 711. Inlet pipe; 712. Outlet pipe; 713. Protruding ring; 714. Inlet pipe; 715. Outlet pipe; 72. Locking tongue; 721. Stop ring; 73. Valve spring; 74. Support plate; 75. Support plate. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0039] This application discloses a pneumatic locking connection mechanism for the front and rear tow hooks of a combined road and rail transport vehicle. (Refer to...) Figure 1 and Figure 2 The pneumatic locking connection mechanism is installed on the bogie 1, including a front tow hook 2 fixedly connected to one of the short sides of the bogie 1, and a tail tow hook 3 fixedly connected to the other short side of the bogie 1; the side of the front tow hook 2 away from the tail tow hook 3 protrudes in a direction away from the tail tow hook 3 to form a protrusion plate 21, and the side of the tail tow hook 3 away from the front tow hook 2 is provided with a groove 31 that matches the protrusion plate 21.

[0040] The surface of the tail tow hook frame 3 is provided with a mounting hole 32 that penetrates the tail tow hook frame 3. The mounting hole 32 communicates with the groove 31. The protrusion 21 of the front tow hook frame 2 is provided with a mating hole 22 that corresponds to the mounting hole 32. The mating hole 22 penetrates the protrusion 21. A sensor 4 is installed on the lower groove wall of the groove 31. The locking connection mechanism also includes an intelligent controller. The sensor 4 is electrically connected to the intelligent controller. The sensor 4 detects the position of the protrusion 21 and transmits the data to the intelligent controller.

[0041] A tapered pin 5 is slidably inserted into the mounting hole 32. The axial direction of the tapered pin 5 is set along the height direction of the tail hook frame 3. The tail hook frame 3 is also provided with a control component 6 for controlling the sliding of the tapered pin 5 along the height direction; see reference. Figure 2 and Figure 3 The control component 6 includes a shaft 61 rotatably connected to the tail hook frame 3. The shaft 61 is located on the side of the tapered pin 5 away from the front hook frame 2, and the axial direction of the shaft 61 is arranged along the width direction of the bogie 1.

[0042] A rocker arm 62 is sleeved and fixedly connected to the shaft 61. The rocker arm 62 is aligned with the tapered pin 5. A hinge rod 63 is ball-jointed to the lower end face of the tapered pin 5. The hinge rod 63 is inserted into the mounting hole 32. The length direction of the hinge rod 63 is set along the axial direction of the tapered pin 5. The end of the hinge rod 63 away from the tapered pin 5 is hinged to the side corresponding to the rocker arm 62. A groove for the rocker arm 62 to rotate is opened on the tail hook frame 3. A connecting plate 64 is also provided and fixedly connected to the shaft 61. The connecting plate 64 is located at one end of the shaft 61.

[0043] The control component 6 also includes a drive component 65 that drives the connecting plate 64 to rotate. The drive component 65 includes a cylinder 652 mounted on the bogie 1. The cylinder 652 is connected to an air source, and the air source of the cylinder 652 is electrically connected to the intelligent controller. The telescopic rod of the cylinder 652 is close to the connecting plate 64, and a connecting rod 651 is hinged to the end of the telescopic rod of the cylinder 652. The connecting rod 651 is hinged to the connecting plate 64. In the initial state, the upper end face of the tapered pin 5 is lower than the groove 31.

[0044] The control assembly 6 also includes a reset component 66, which enables the tapered pin 5 to be reset more effectively. The reset component 66 includes a connecting block 661 hinged to the rocker arm 62. The connecting block 661 is located on the side of the shaft 61 away from the hinge rod 63. A reset spring 662 is fixedly connected to the connecting block 661. A fixing tube 663 is fixedly connected to the end of the reset spring 662 away from the connecting block 661. The fixing tube 663 is fixedly connected to the bogie 1 and is located on the side of the shaft 61 away from the front tow hook frame 2. A guide rod 664 is inserted into the reset spring 662. One end of the guide rod 664 is fixed to the connecting block 661, and the other end of the guide rod 664 passes through the fixing tube 663 and is slidably inserted into the fixing tube 663. In the initial state, the reset spring 662 is in its natural state.

[0045] When connecting two bogie sections 1, the operator inserts the protrusion 21 of the latter bogie 1 into the groove 31 of the former bogie 1. During this process, the sensor 4 detects the position of the protrusion 21 and transmits the signal to the intelligent controller. When the mating hole 22 is aligned with the mounting hole 32, the intelligent controller controls the air source of the cylinder 652 to work, causing the telescopic rod of the cylinder 652 to retract. The telescopic rod of the cylinder 652 drives the upper end of the connecting plate 64 to move away from the front tow hook frame 2.

[0046] The rotation of the connecting plate 64 drives the shaft 61 and the rocker arm 62 to rotate from the front tow hook frame 2 toward the tail tow hook frame 3, causing the end of the rocker arm 62 near the hinge rod 63 to push the hinge rod 63 and the tapered pin 5 upward, thereby causing the tapered pin 5 to insert into the mating hole 22; the end of the rocker arm 62 near the connecting block 661 moves downward, thereby driving the connecting block 661 and the guide rod 664 to move, and the moving of the connecting block 661 stretches the return spring 662.

[0047] When cylinder 652 is in position, the upper end of the cone pin 5 is inserted into the mounting hole 32 at a position higher than the groove 31. At this time, the cone pin 5 connects and fixes the front tow hook frame 2 and the tail tow hook frame 3, thereby connecting and fixing the two adjacent bogie sections 1. When fixing the two adjacent bogie sections 1, the sensor 4 and the intelligent controller work to automatically position the two bogie sections 1, reducing the need for operators to constantly adjust the position of the bogie 1 when fixing the two adjacent bogie sections 1, and improving the efficiency of cargo transportation.

[0048] Because the tapered pin 5 may directly contact the convex plate 21 during movement, causing wear on the convex plate 21, and this wear will prevent the mating hole 22 from properly engaging with the tapered pin 5, requiring the operator to directly replace the front tow hook bracket 2, resulting in high costs. To reduce costs, a ball bearing 23 adapted to the tapered pin 5 is installed in the mating hole 22. The ball bearing 23 prevents direct contact between the tapered pin 5 and the convex plate 21, reducing the possibility of deformation of the convex plate 21. When the ball bearing 23 deforms, the operator can directly replace it, further reducing costs. Similarly, a bushing 33 adapted to the tapered pin 5 is also installed in the mounting hole 32.

[0049] When it is necessary to release the fixation of two adjacent bogie sections 1, the operator controls the air supply of cylinder 652 through the intelligent controller, so that the extension rod of cylinder 652 extends. The extension rod of cylinder 652 pushes the corresponding end of connecting plate 64 to rotate towards the front tow hook frame 2. At the same time, connecting plate 64 drives shaft 61 and rocker arm 62 to rotate and reset. Rocker arm 62 drives hinge and tapered pin 5 to move downward and reset. Reset spring 662 restores its deformation and pulls connecting block 661 to move and reset. The movement of connecting block 661 drives rocker arm 62 to rotate to the initial position, so that rocker arm 62 and tapered pin 5 can be reset better.

[0050] Reference Figure 4 and Figure 5To reduce the downward sliding of the cone pin 5 when fixing two adjacent bogies 1, which could lead to the unfixation of the two adjacent bogies 1, the tail hook frame 3 is also provided with a locking assembly 7 to limit the cone pin 5. The locking assembly 7 includes a valve body 71, which includes an inlet pipe 711 and an outlet pipe 712 arranged opposite to each other. The outlet pipe 712 is threadedly connected to the tail hook frame 3. The valve body 71 is located below the groove 31 and communicates with the mounting hole 32.

[0051] A locking tongue 72 is slidably inserted into the valve body 71. The diameters at both ends of the locking tongue 72 are larger than the diameter in the middle of the locking tongue 72. One end of the locking tongue 72 protrudes from the outlet pipe 712, and the other end of the locking tongue 72 protrudes from the inlet pipe 711. A stop ring 721 is sleeved and embedded at the end of the locking tongue 72 protruding from the inlet pipe 711. The stop ring 721 is located outside the valve body 71, and the outer diameter of the stop ring 721 is larger than the inner diameter of the inlet pipe 711. When the stop ring 721 moves to contact the end face of the inlet pipe 711, the stop ring 721 and the inlet pipe 711 cooperate to limit the locking tongue 72, preventing the locking tongue 72 from continuing to move until the whole is located inside the valve body 71.

[0052] The middle part of the side wall of the valve body 71 protrudes inward to form a convex ring 713. The side wall of the smaller diameter part of the locking tongue 72 contacts the convex ring 713. The smaller diameter part of the locking tongue 72 is fitted with a valve spring 73. The valve spring 73 is located on the side of the convex ring 713 near the outlet pipe 712. One end of the valve spring 73 is fixed to the convex ring 713, and the other end of the valve spring 73 is fixed to the end face of the locking tongue 72. When the valve spring 73 is in its natural state, the valve spring 73 causes one end of the locking tongue 72 to be located in the mounting hole 32.

[0053] The valve body 71 also includes an air inlet pipe 714 and an air outlet pipe 715. Both the air inlet pipe 714 and the air outlet pipe 715 are located on the side of the convex ring 713 near the inlet pipe 711. The air inlet pipe 714 is connected to the air source. The outlet pipe 712 is equipped with a hole 32 electrically controlled valve. The air source of the air inlet pipe 714 and the electrically controlled valve of the air outlet pipe 715 are both electrically connected to the intelligent controller.

[0054] In the initial state, the electrically controlled valve of the air outlet pipe 715 is normally closed, and the air pressure on both sides of the convex ring 713 in the valve body 71 is the same. At this time, one end of the locking tongue 72 extends into the mounting hole 32 under the action of the valve spring 73, and the locking tongue 72 is located above the tapered pin 5. When the sensor 4 detects that the front tow hook 2 has moved into place, the intelligent controller first controls the air source of the air inlet pipe 714 to introduce high-pressure gas into the valve body 71, so that the air pressure on the side of the convex ring 713 near the inlet pipe 711 gradually increases. The air pressure acts on the variable diameter end face of the locking tongue 72 near the inlet pipe 711, so that the locking tongue 72 moves out of the inlet pipe 711. The locking tongue 72 gradually moves to the outside of the mounting hole 32, and at the same time, the locking tongue 72 also compresses the valve spring 73.

[0055] After the intelligent controller controls the air source of the intake pipe 714 to pump a certain amount of gas into the valve body 71, the air source of the intake pipe 714 stops pumping gas into the valve body 71. At this time, the locking tongue 72 disengages from the mounting hole 32, and the controller controls the air source of the cylinder 652 to work, causing the cone pin 5 to move upward. When the cone pin 5 moves upward into place, the intelligent controller controls the electric valve of the exhaust pipe 715 to open, and the gas in the valve body 71 is discharged to the outside of the valve body 71 through the exhaust pipe 715, causing the air pressure on the side of the convex ring 713 close to the inlet pipe 711 to gradually decrease. At the same time, the valve spring 73 gradually recovers its deformation. The valve spring 73 recovers its deformation and pushes the locking tongue 72 to move into the mounting hole 32. At this time, the locking tongue 72 limits the cone pin 5, preventing the cone pin 5 from sliding downward and causing the front tow hook frame 2 and the tail tow hook frame 3 to disengage.

[0056] In order to provide support for the locking tongue 72 when it moves along the valve body 71 and reduce the occurrence of rotation of the locking tongue 72 in the height direction during movement, a support plate 74 is hinged to one end of the locking tongue 72 outside the inlet pipe 711. A support plate 75 is hinged to the lower surface of the support plate 74 and the support plate 75 is fixedly connected to the tail hook frame 3. When the locking tongue 72 moves, the locking tongue 72 drives the support plate 74 to rotate on the support plate 75. The support plate 74 and the support plate 75 cooperate to support the locking tongue 72.

[0057] The implementation principle of the pneumatic locking connection mechanism of the front and rear tow hooks of a road-rail dual-transport vehicle according to the embodiment of this application is as follows: The operator controls the bogie 1 to move, so that the convex plate 21 is inserted into the groove 31. After the convex plate 21 moves into place, the sensor 4 transmits the signal to the intelligent controller. The intelligent controller controls the air source of the air intake pipe 714 to pump a certain high-pressure gas into the valve body 71, so that the locking tongue 72 moves out of the mounting hole 32. The intelligent controller also controls the air source of the cylinder 652 to work, so that the telescopic rod of the cylinder 652 retracts. The rocker arm 62 pushes the hinge rod 63 and the cone pin 5 to move upward, so that the cone pin 5 is simultaneously inserted into the mounting hole 32 and the mating hole 22. After the cone pin 5 moves into place, the intelligent controller controls the electric control valve of the air outlet pipe 715 to open, and the gas in the valve body 71 is discharged from the valve body 71. At the same time, the valve spring 73 restores its deformation and pushes the locking tongue 72 into the mounting hole 32. The locking tongue 72 limits the cone pin 5.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pneumatic locking connection mechanism for the front and rear tow hooks of a dual-purpose road and rail vehicle, mounted on a bogie (1), characterized in that: The bogie (1) includes a front tow hook frame (2) and a tail tow hook frame (3) connected to opposite sides respectively. The front tow hook frame (2) has a protruding plate (21) integrally formed on the side away from the tail tow hook frame (3), and the tail tow hook frame (3) has a groove (31) adapted to the protruding plate (21) on the side away from the front tow hook frame (2). The tail hook frame (3) is provided with a mounting hole (32) communicating with the groove (31), and the protruding plate (21) is provided with a mating hole (22) corresponding to the mounting hole (32). A tapered pin (5) is inserted into the mounting hole (32). The tail hook frame (3) is provided with a control component (6) for controlling the movement of the control cone pin (5) along the height direction. The groove (31) is provided with a sensor (4) for detecting the position of the front hook frame (2). The pneumatic locking connection mechanism also includes an intelligent controller. The sensor (4) and the control component (6) are both electrically connected to the intelligent controller. The tail tow hook frame (3) is also provided with a locking component (7) for connecting and fixing the front tow hook frame (2) and the tail tow hook frame (3) with a retaining cone pin (5). The locking assembly (7) includes a valve body (71) threadedly connected to the tail hook bracket (3), the valve body (71) communicating with the mounting hole (32), the inner sidewall of the valve body (71) protruding inward to form a convex ring (713), and a locking tongue (72) slidably inserted in the valve body (71), the locking tongue (72) being able to move into the mounting hole (32); The diameters at both ends of the latch (72) are greater than the diameter in the middle of the latch (72). Both ends of the latch (72) penetrate the valve body (71). The sidewall of the smaller diameter part of the latch (72) contacts the convex ring (713), thereby dividing the valve body (71) into two chambers. The small diameter portion of the latch (72) is fitted with a valve spring (73). The valve spring (73) is located on the side of the convex ring (713) near the mounting hole (32). One end of the valve spring (73) is fixed to the convex ring (713), and the other end of the valve spring (73) is fixed to the end face of the latch (72). The valve body (71) includes an air inlet pipe (714) and an air outlet pipe (715) located on the side of the convex ring (713) away from the mounting hole (32). The air inlet pipe (714) is connected to an air source, and an electrically controlled valve is installed on the air outlet pipe (715). The air source of the air inlet pipe (714) and the electrically controlled valve on the air outlet pipe (715) are both electrically connected to the intelligent controller.

2. The pneumatic locking connection mechanism for the front and rear tow hooks of a dual-purpose road and rail transport vehicle according to claim 1, characterized in that: The control component (6) includes a shaft (61) rotatably connected to the tail hook frame (3). The axial direction of the shaft (61) is perpendicular to the axial direction of the tapered pin (5). A rocker arm (62) is sleeved and fixed on the shaft (61). A hinge rod (63) is ball-jointed to the lower end of the tapered pin (5). One end of the rocker arm (62) is hinged to the lower end of the hinge rod (63). A connecting plate (64) is also fixedly connected to the shaft (61). The control component (6) also includes a drive element (65) for driving the connecting plate (64) to rotate.

3. The pneumatic locking connection mechanism for the front and rear tow hooks of a dual-purpose road and rail transport vehicle according to claim 2, characterized in that: The drive unit (65) includes a connecting rod (651) hinged on the connecting plate (64). The drive unit (65) also includes a cylinder (652) mounted on the bogie (1). The telescopic rod of the cylinder (652) is hinged to the connecting plate (64), and the air source of the cylinder (652) is electrically connected to the intelligent controller.

4. The pneumatic locking connection mechanism for the front and rear tow hooks of a road-rail dual-use vehicle according to claim 2 or 3, characterized in that: The control component (6) also includes a reset element (66) that enables the cone pin (5) to be reset more effectively.

5. The pneumatic locking connection mechanism for the front and rear tow hooks of a dual-purpose road and rail transport vehicle according to claim 4, characterized in that: The reset component (66) includes a connecting block (661) hinged to the rocker arm (62). The connecting block (661) is located on the side of the shaft (61) away from the tapered pin (5). A reset spring (662) is fixedly connected to the connecting block (661). A fixing tube (663) is fixedly connected to the end of the reset spring (662) away from the connecting block (661). The fixing tube (663) is fixed to the bogie (1). The fixing tube (663) is located on the side of the shaft (61) away from the tapered pin (5). A guide rod (664) is inserted into the reset spring (662). The guide rod (664) is fixed to the connecting block (661). The guide rod (664) passes through the fixing tube (663), and the guide rod (664) and the fixing tube (663) are slidably inserted into each other.

6. The pneumatic locking connection mechanism for the front and rear tow hooks of a dual-purpose road and rail transport vehicle according to claim 1, characterized in that: The end of the latch (72) away from the mounting hole (32) is hinged to a support plate (74), which is located outside the valve body (71). The end of the support plate (74) away from the latch (72) is hinged to a support plate (75), which is fixedly connected to the tail hook frame (3).

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