Cabin door opening mechanism

Abstract

The invention discloses a cabin door opening mechanism. A cabin door comprises an upward turning door and a downward turning door, the opening mechanism comprises a controller, an upper hinge, a lower hinge, a first support, a second support, a hydraulic cylinder, a right triangle part, a lower connecting rod, a lower supporting rod, an upper supporting rod, an upper connecting rod and a hydraulic cylinder connecting rod. Wherein the right triangle part comprises a hypotenuse rod, a long side rod and a short side rod; one end of the hydraulic cylinder is hinged to the first support, the other end of the hydraulic cylinder is hinged to one end of the hydraulic cylinder connecting rod, and the other end of the hydraulic cylinder connecting rod is fixedly connected to the bevel edge rod.

Description

Technical Field

[0001] The invention relates to the field of special vehicles, and in particular to a hatch opening mechanism. Background Art

[0002] Special vehicles are often used to perform special tasks and often need to work outdoors. Existing upper and lower flap doors are mostly opened by electric cylinders, hydraulic cylinders, or gas springs; generally, an actuator is set on each side of each door, and a total of four upper and lower flap doors are required.

[0003] Since special vehicles often work outdoors in harsh environments, their hydraulic systems are more likely to inhale air during the suction section than in urban environments, leading to adverse effects.

[0004] CN103267042A discloses a hydraulic cylinder (similar to Figure 1 ), including a cylinder body, with oil inlet and outlet ports at both ends of the cylinder body, a piston movably arranged in the cylinder body, a piston rod arranged on the piston, one end of the piston rod passing through the cylinder body, and an exhaust hole arranged on both sides of the cylinder body, the distance from the exhaust hole on the same side of the cylinder body to the end of the cylinder body is less than or equal to the distance from the oil inlet and outlet ports to the end of the cylinder body, and a sealing cap is arranged on the exhaust hole of the cylinder body. The air in the cylinder body can be exhausted before use.

[0005] However, in actual engineering practice, there are the following problems: First, the upper and lower flip doors in the prior art each correspond to an actuator, which has a complex structure, a large number of components, and cannot be opened accurately and synchronously.

[0006] Second, the above patent only discloses exhaust, but does not disclose how and when to exhaust. Special vehicles facing outdoor environments obviously do not have professional maintenance points, so how the operator knows when to exhaust is a problem.

[0007] 3. The alarm device in the prior art can only give real-time reminders but cannot identify various complex situations.

[0008] Fourth, the exhaust device in the prior art cannot accurately control the exhaust volume and cannot be conveniently operated for adjustment.

[0009] 5. The exhaust nozzle of this patent is welded on the cylinder body, but it cannot cope with the problem that the maintenance point cannot be found in the special operation vehicle in the outdoor environment, and it is not easy to disassemble and maintain. Summary of the invention

[0010] In order to overcome the above problems, the present invention proposes a solution to solve the above multiple problems at the same time.

[0011] The technical solution adopted by the present invention to solve the technical problem is: a hatch door opening mechanism, the hatch door includes an upper flip door and a lower flip door; the opening mechanism includes a controller, an upper hinge, a lower hinge, a first support, a second support, a hydraulic cylinder, a right-angled triangle part, a lower connecting rod, a lower support rod, an upper support rod, an upper connecting rod, and a hydraulic cylinder connecting rod; wherein the right-angled triangle part includes a hypotenuse rod, a long side rod, and a short side rod; One end of the hydraulic cylinder is hinged on the first support, and the other end is hinged on one end of the hydraulic cylinder connecting rod, and the other end of the hydraulic cylinder connecting rod is fixedly connected to the hypotenuse rod; the right-angled triangle portion is hinged on the second support, and the hypotenuse rod continues to extend forward after being connected and intersected with the long side rod to hinge one end of the upper support rod, and the short side rod continues to extend forward after being connected and intersected with the long side rod to hinge one end of the lower support rod, the other end of the upper support rod is hinged to one end of the upper connecting rod, and the other end of the upper connecting rod is fixedly connected to the upper flip door, the other end of the lower support rod is hinged to one end of the lower connecting rod, and the other end of the lower connecting rod is fixedly connected to the lower flip door; the upper flip door is connected to the cabin body by an upper hinge, and the lower flip door is connected to the cabin body by a lower hinge; The hydraulic cylinder comprises a cylinder wall, an exhaust nozzle, a sealing plug, a sleeve, a T-shaped piece, a trigger device, an abutment block, and a telescopic scale rod; the exhaust nozzle is threadedly connected to the cylinder wall, the exhaust nozzle comprises a lower opening and a left opening, the sealing plug can detachably block the left opening, the sleeve can be threadedly connected to the inner wall of the exhaust nozzle and can move up and down relative to the exhaust nozzle; the trigger device is arranged above the sleeve, and the abutment block is arranged on the outer wall of the lower part of the sleeve; the T-shaped piece comprises a T-shaped cross-section and is composed of a head and a rod, a middle hole is arranged in the T-shaped piece, during operation, the head is located above the trigger device, and the rod is guided by the sleeve; a blind hole is arranged on the main body of the exhaust nozzle to accommodate the telescopic scale rod; During installation, the sleeve is rotated into the exhaust nozzle. During installation and positioning, the lower end of the telescopic scale rod can be placed on the upper surface of the abutment block, and the upper end of the telescopic scale rod abuts against the lower surface of the exhaust nozzle, so as to know the degree of screwing of the sleeve; Filling the working chamber of the hydraulic cylinder corresponding to the exhaust nozzle with liquid is recorded as condition one, and the corresponding T-shaped piece falls down to contact the trigger device on the sleeve after filling and before discharging the liquid is recorded as condition two. When the above two conditions are met at the same time, the controller sends an alarm signal.

[0012] Preferably, the length of the lower support rod is smaller than the length of the upper support rod.

[0013] Preferably, the long side rod is connected to the shaft of the hypotenuse rod.

[0014] Preferably, the long side rod is connected to the shaft of the short side rod.

[0015] Preferably, the intersection of the hypotenuse rod and the short side rod is hinged to the second support.

[0016] Preferably, the long side rods are perpendicular to the short side rods.

[0017] Preferably, the long side rod and the hypotenuse rod are made in one piece.

[0018] Preferably, the long side rod is fixedly connected to the hypotenuse rod.

[0019] Preferably, the long side rods and the short side rods are made in one piece.

[0020] Preferably, the long side rods are fixedly connected to the short side rods.

[0021] The beneficial effects of the present invention are: Invention point 1: In view of the first point of the background technology, a mechanism for synchronously opening upper and lower flap doors is provided, which reduces the number of actuators (hydraulic cylinders), reduces costs, and reduces the failure rate. It is not only applicable to upper and lower flap doors, but also to left and right doors.

[0022] Invention point 2: The second point raised in response to the background technology is that when the medium in the hydraulic cylinder is sufficient, the T-shaped piece is lifted up. When there is too much gas inside the hydraulic cylinder, the gas rises to the top of the T-shaped piece through the small hole, causing the liquid level to drop. The T-shaped piece falls and contacts the sensor component on the sleeve, thereby sending a signal to the controller.

[0023] Invention point three, in response to the third point raised in the background technology, the controller performs logical control according to different situations. Since the T-shaped piece will also contact the sleeve when the hydraulic cylinder is not working, in order to avoid false triggering, it is set as follows: for a certain exhaust nozzle, when the corresponding working chamber is filled with liquid, it is marked as condition one, and after a predetermined time, when the corresponding T-shaped piece falls and contacts the sensor component on the sleeve, it is marked as condition two. The controller will send out an alarm signal only when both conditions are met.

[0024] Invention point 4: In response to the fourth point raised in the background technology, a scale mark is set to facilitate the operator to accurately adjust the exhaust standard. The threaded connection between the sleeve and the exhaust nozzle body determines the exhaust standard, but due to the threaded connection between the sleeve and the exhaust nozzle body, it is not convenient to set the scale. Therefore, the scale mark is set on an additional telescopic scale rod. Before installation, the relative position between the sleeve and the exhaust nozzle body can be adjusted according to the exhaust standard guided by the manufacturer, and the adjustment is accurate according to the scale on the telescopic scale rod. The scale rod can be stored in the exhaust nozzle, and the lower end abuts against the abutment block during measurement, and the upper end abuts against the lower surface of the exhaust nozzle; thus, even if there is no maintenance point outdoors, the operator can easily and accurately adjust the exhaust volume.

[0025] Invention point five, in response to the fifth point proposed in the background technology, the exhaust nozzle body is threadedly connected to the cylinder body, and the sleeve is threadedly connected to the exhaust nozzle body. The abutment block on the sleeve is similar to a handle, which can be used to rotate and adjust the position of the sleeve. Therefore, not only the exhaust nozzle body is detachable, but the sleeve and T-shaped piece are also easy to disassemble, which is very suitable for special vehicles working outdoors without the problem of maintenance points. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 Schematic diagram of a hydraulic cylinder of the background art.

[0028] Figure 2 It is a schematic diagram of the first state of the hatch opening mechanism of the present invention.

[0029] Figure 3 It is a schematic diagram of the second state of the hatch opening mechanism of the present invention.

[0030] Figure 4 This is a schematic diagram of the third state of the hatch opening mechanism of the present invention.

[0031] Figure 5 It is a structural diagram of the exhaust nozzle when the hydraulic cylinder of the present invention is working without alarm.

[0032] Figure 6 It is a structural diagram of the exhaust nozzle when the hydraulic cylinder of the present invention triggers an alarm.

[0033] In the figure, the reference numerals are as follows: 1. Upward flip door; 2. Downward flip door; 3. Upper hinge; 4. Lower hinge; 5. First support; 6. Second support; 7. Hydraulic cylinder; 8. Right triangle portion; 9. Lower connecting rod; 10. Lower support rod; 11. Upper support rod; 12. Upper connecting rod; 13. Hypotenuse rod; 14. Long side rod; 15. Short side rod; 16. Hydraulic cylinder connecting rod; 17. Cylinder wall; 18. Exhaust nozzle; 19. Sealing plug; 20. Sleeve; 21. T-shaped piece; 22. Trigger device; 23. Threaded portion; 24. Middle hole; 25. Abutment block; 26. Telescopic scale rod. DETAILED DESCRIPTION

[0034] As shown in the figure: a hatch door opening mechanism, the hatch door includes an upper flip door and a lower flip door; the opening mechanism includes a controller, an upper hinge, a lower hinge, a first support, a second support, a hydraulic cylinder, a right-angled triangle part, a lower connecting rod, a lower support rod, an upper support rod, an upper connecting rod, and a hydraulic cylinder connecting rod; wherein the right-angled triangle part includes a hypotenuse rod, a long side rod, and a short side rod; One end of the hydraulic cylinder is hinged on the first support, and the other end is hinged on one end of the hydraulic cylinder connecting rod, and the other end of the hydraulic cylinder connecting rod is fixedly connected to the hypotenuse rod; the right-angled triangle portion is hinged on the second support, and the hypotenuse rod continues to extend forward after being connected and intersected with the long side rod to hinge one end of the upper support rod, and the short side rod continues to extend forward after being connected and intersected with the long side rod to hinge one end of the lower support rod, the other end of the upper support rod is hinged to one end of the upper connecting rod, and the other end of the upper connecting rod is fixedly connected to the upper flip door, the other end of the lower support rod is hinged to one end of the lower connecting rod, and the other end of the lower connecting rod is fixedly connected to the lower flip door; the upper flip door is connected to the cabin body by an upper hinge, and the lower flip door is connected to the cabin body by a lower hinge; The hydraulic cylinder comprises a cylinder wall, an exhaust nozzle, a sealing plug, a sleeve, a T-shaped piece, a trigger device, an abutment block, and a telescopic scale rod; the exhaust nozzle is threadedly connected to the cylinder wall, the exhaust nozzle comprises a lower opening and a left opening, the sealing plug can detachably block the left opening, the sleeve can be threadedly connected to the inner wall of the exhaust nozzle and can move up and down relative to the exhaust nozzle; the trigger device is arranged above the sleeve, and the abutment block is arranged on the outer wall of the lower part of the sleeve; the T-shaped piece comprises a T-shaped cross-section and is composed of a head and a rod, a middle hole is arranged in the T-shaped piece, during operation, the head is located above the trigger device, and the rod is guided by the sleeve; a blind hole is arranged on the main body of the exhaust nozzle to accommodate the telescopic scale rod; During installation, the sleeve is rotated into the exhaust nozzle. During installation and positioning, the lower end of the telescopic scale rod can be placed on the upper surface of the abutment block, and the upper end of the telescopic scale rod abuts against the lower surface of the exhaust nozzle, so as to know the degree of screwing of the sleeve; Filling the working chamber of the hydraulic cylinder corresponding to the exhaust nozzle with liquid is recorded as condition one, and the corresponding T-shaped piece falls down to contact the trigger device on the sleeve after filling and before discharging the liquid is recorded as condition two. When the above two conditions are met at the same time, the controller sends an alarm signal.

[0035] As shown in the figure: the length of the lower support rod is less than that of the upper support rod. The long side rod is connected to the rod body of the hypotenuse rod. The long side rod is connected to the rod body of the short side rod. The intersection of the hypotenuse rod and the short side rod is hinged to the second support. The long side rod is perpendicular to the short side rod. The long side rod is made of one piece with the hypotenuse rod. The long side rod is fixedly connected to the hypotenuse rod. The long side rod is made of one piece with the short side rod. The long side rod is fixedly connected to the short side rod.

[0036] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention should be included in the patent scope of this case.

Claims

1. A hatch door opening mechanism, characterized in that: The hatch includes the upper flip door and the lower flip door; the opening mechanism includes a controller, an upper hinge, a lower hinge, a first support, a second support, a hydraulic cylinder, a right triangle part, a lower connecting rod, a lower support rod, an upper support rod, an upper connecting rod, and a hydraulic cylinder connecting rod; wherein the right triangle part includes a hypotenuse rod, a long side rod, and a short side rod; One end of the hydraulic cylinder is hinged on the first support, and the other end is hinged on one end of the hydraulic cylinder connecting rod, and the other end of the hydraulic cylinder connecting rod is fixedly connected to the hypotenuse rod; the right-angled triangle portion is hinged on the second support, and the hypotenuse rod continues to extend forward after being connected and intersected with the long side rod to hinge one end of the upper support rod, and the short side rod continues to extend forward after being connected and intersected with the long side rod to hinge one end of the lower support rod, the other end of the upper support rod is hinged to one end of the upper connecting rod, and the other end of the upper connecting rod is fixedly connected to the upper flip door, the other end of the lower support rod is hinged to one end of the lower connecting rod, and the other end of the lower connecting rod is fixedly connected to the lower flip door; the upper flip door is connected to the cabin body by an upper hinge, and the lower flip door is connected to the cabin body by a lower hinge; The hydraulic cylinder comprises a cylinder wall, an exhaust nozzle, a sealing plug, a sleeve, a T-shaped piece, a trigger device, an abutment block, and a telescopic scale rod; the exhaust nozzle is threadedly connected to the cylinder wall, the exhaust nozzle comprises a lower opening and a left opening, the sealing plug can detachably block the left opening, the sleeve can be threadedly connected to the inner wall of the exhaust nozzle and can move up and down relative to the exhaust nozzle; the trigger device is arranged above the sleeve, and the abutment block is arranged on the outer wall of the lower part of the sleeve; the T-shaped piece comprises a T-shaped cross-section and is composed of a head and a rod, a middle hole is arranged in the T-shaped piece, during operation, the head is located above the trigger device, and the rod is guided by the sleeve; a blind hole is arranged on the main body of the exhaust nozzle to accommodate the telescopic scale rod; During installation, the sleeve is rotated into the exhaust nozzle. During installation and positioning, the lower end of the telescopic scale rod can be placed on the upper surface of the abutment block, and the upper end of the telescopic scale rod abuts against the lower surface of the exhaust nozzle, so as to know the degree of screwing of the sleeve; Filling the working chamber of the hydraulic cylinder corresponding to the exhaust nozzle with liquid is recorded as condition one, and the corresponding T-shaped piece falls down to contact the trigger device on the sleeve after filling and before discharging the liquid is recorded as condition two. When the above two conditions are met at the same time, the controller sends an alarm signal.

2. A hatch door opening mechanism according to claim 1, characterized in that: The length of the lower support rod is smaller than that of the upper support rod.

3. A hatch door opening mechanism according to claim 1, characterized in that: The long side rod is connected to the shaft of the hypotenuse rod.

4. A hatch door opening mechanism according to claim 1, characterized in that: The long side rods are connected to the shafts of the short side rods.

5. A hatch door opening mechanism according to claim 1, characterized in that: The intersection of the hypotenuse rod and the short side rod is hinged to the second support.

6. A hatch door opening mechanism according to claim 1, characterized in that: The long side rods are perpendicular to the short side rods.

7. A hatch door opening mechanism according to claim 1, characterized in that: The long side rod and the hypotenuse rod are made in one piece.

8. A hatch door opening mechanism according to claim 1, characterized in that: The long side rod is fixedly connected to the hypotenuse rod.

9. A hatch door opening mechanism according to claim 1, characterized in that: The long side rods and the short side rods are made in one piece.

10. The hatch door opening mechanism according to claim 1, characterized in that: The long side rods are fixedly connected to the short side rods.

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