Gravity triggering type container hoisting and tipping unloading mechanism and method

Abstract

The invention discloses a gravity triggering type container hoisting and tipping unloading mechanism and method. A hoisting frame is used for hoisting a container; the container door limiting block is constructed to press and release the side door of the container; when the hanging bracket is in a horizontal state, the self-triggering mechanism does not act, and the locking and limiting device locks the container door limiting block to enable the container door limiting block to be in a closed state so as to press the container side door; when the hanging bracket is in an inclined state at a preset angle, the self-triggering mechanism acts under the driving of gravity, so that the locking limiting device unlocks the box door limiting block; when the locking limiting device relieves locking of the container door limiting block, the return limiting device locks the container door limiting block to enable the container door limiting block to be in an open state all the time so as to relieve pressing of the container side door, and locking of the container door limiting block can be relieved only when the return limiting device is returned through external force. The device can effectively reduce energy consumption, is low in maintenance cost, is of a full-mechanical structure, does not have electronic elements, and can stably work in a severe environment.

Description

TECHNICAL FIELD

[0001] The present application relates to a gravity trigger type container lifting and tipping unloading mechanism and method, belonging to the technical field of container handling equipment. BACKGROUND

[0002] The container lifting mechanism is a mechanized equipment for container loading and unloading, stacking and transfer, which is usually integrated in a port crane, a straddle carrier or a reach stacker. The tipping mechanism is a device for tilting the container at a specific position for unloading.

[0003] The existing container lifting mechanism is a hydraulic drive type tipping system, that is, a hydraulic cylinder is used to directly control the opening and closing of the container door. However, the hydraulic drive type tipping system has the following disadvantages:

[0004] (1) The opening and closing of the container door is dependent on the hydraulic system, which has high energy consumption and high failure rate;

[0005] (2) The existing scheme needs to separately configure a power system, the spreader itself has a large weight, and the production cost is high. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a gravity trigger type container lifting and tipping unloading mechanism and method, which realizes the lifting and handling of the container and unloading. The present application can effectively reduce the energy consumption, has low maintenance cost, and is a full mechanical structure without electronic components, which can also work stably in harsh environments.

[0007] The present application is implemented according to the following technical solutions:

[0008] In a first aspect, the present application provides a gravity trigger type container lifting and tipping unloading mechanism, comprising:

[0009] a lifting frame for lifting the container;

[0010] a door limiting block hinged to the lifting frame near one end of the container side door, the door limiting block being configured to press and release the container side door; when the door limiting block is in the pressed state, the container side door is always in the closed state;

[0011] a locking and limiting device installed on the lifting frame near the door limiting block;

[0012] a gravity-driven self-triggering mechanism installed on the lifting frame, the self-triggering mechanism being connected to the locking and limiting device; when the lifting frame is in a horizontal state, the self-triggering mechanism does not act, and the locking and limiting device locks the door limiting block, so that the container side door is pressed in the closed state; when the lifting frame is in a preset angle of inclination, the self-triggering mechanism is actuated under the action of gravity, so that the locking and limiting device releases the locking of the door limiting block;

[0013] The return limiting device is installed on the hanger near the box door limiting block; when the locking limiting device is released from locking the box door limiting block, the return limiting device locks the box door limiting block to always be in the open state to release the compression of the container side door; only through the return of the return limiting device by external force, the locking of the box door limiting block can be released, and then the locking limiting device locks the box door limiting block.

[0014] In some embodiments, the self-triggering mechanism comprises:

[0015] The pendulum mechanism comprises a pendulum rod and a counterweight, the counterweight is fixed on the top of the pendulum rod, and the bottom of the pendulum rod is installed on the hinge seat on the hanger;

[0016] The multi-link mechanism is hinged at one end to the pendulum rod and at the other end to the locking limiting device; when the hanger is tilted to the left, the pendulum mechanism rotates to the left under the action of gravity, and drives the locking limiting device to slide to the right through the multi-link mechanism to release the locking of the box door limiting block, so that the box door limiting block rotates to the right under the action of gravity, releases the displacement constraint of the container side door, and the container side door is automatically opened under the action of gravity to unload the materials.

[0017] In some embodiments, the multi-link mechanism comprises:

[0018] The first connecting rod is hinged at one end of the length direction to the middle region of the pendulum rod;

[0019] The third connecting rod is hinged at one end of the length direction to the tail of the locking limiting device;

[0020] The second connecting rod is hinged at the middle region to the support rod on the hanger, one end of the length direction of the second connecting rod is hinged to the other end of the length direction of the first connecting rod, and the other end of the length direction of the second connecting rod is hinged to the other end of the length direction of the third connecting rod.

[0021] In some embodiments, when the hanger is in a horizontal state, the pendulum mechanism can be tilted to the right by an angle A through the positioning mechanism; when the hanger is tilted by an angle A, the center of gravity of the counterweight is in a vertical position, and when the hanger is tilted by more than an angle A, the counterweight rotates to the left to drive the multi-link mechanism due to the offset of the center of gravity.

[0022] In some embodiments, the angle A ranges from 20 degrees to 30 degrees.

[0023] In some embodiments, the hinge hole of the hinge seat extends outwardly with a notch, the end of the rotating shaft of the swing lever is fixed with a protruding ring, the ring is located in the center hole of the baffle, and the protrusion is located in the notch. After the swing lever rotates, the swing lever is limited by the contact between the protrusion and the baffle; the ring and the baffle form the positioning mechanism. In some embodiments, the locking and limiting device comprises:

[0024] The sliding seat is connected to the slide rail of the hanger, and can move linearly in the left and right directions on the slide rail; the sliding seat is provided with a groove with an opening facing the cabinet door limiting block;

[0025] The second tooth pin is inserted into the groove of the sliding seat, and can move linearly in the left and right directions in the groove;

[0026] The second spring is arranged in the groove of the sliding seat, and the second tooth pin penetrates into the second spring, and the second tooth pin can freely stretch and retract in the sliding seat by compressing the second spring.

[0027] In some embodiments, the second tooth pin is provided with a sharp head with an outward convex arc surface at the part extending out of the groove; after the reset limiting device releases the locking of the cabinet door limiting block, the cabinet door limiting block rotates to the left under the action of gravity to reset, and the cabinet door limiting block contacts the outward convex arc surface of the sharp head during the resetting process, thereby pushing the second tooth pin to move to the right. When the contact passes the topmost point, the second tooth pin rebounds to complete the locking of the cabinet door limiting block.

[0028] In some embodiments, the sliding seat is provided with an end cover on the side close to the second tooth pin, the end cover is provided with a through hole for the second tooth pin to penetrate, at least one protrusion is arranged on the inner circumferential surface of the through hole, and the outer circumferential surface of the second tooth pin is provided with an elongated sliding groove corresponding to the protrusion, and the protrusion penetrates into the elongated sliding groove. The second tooth pin moves to the left under the elastic force of the second spring, so that the protrusion abuts against the root of the elongated sliding groove, thereby achieving the axial limiting of the second tooth pin.

[0029] In some embodiments, the reset limiting device comprises:

[0030] The fixed seat is installed on the hanger, and the fixed seat is provided with a through hole with an opening facing the cabinet door limiting block;

[0031] The first tooth pin penetrates the through hole of the fixed seat, and can move linearly in the left and right directions in the through hole;

[0032] The first spring is arranged in the through hole of the fixed seat, and the first tooth pin penetrates into the first spring, and the first tooth pin can freely stretch and retract in the fixed seat by compressing the first spring.

[0033] In some embodiments, the tooth pin is provided with a sharp head with an outward convex arc surface at a left side position extending from the through hole; the box door limiting block in contact with the outward convex arc surface of the sharp head pushes the tooth pin to move right; when the contact passes the topmost point, the tooth pin rebounds to complete the locking of the box door limiting block.

[0034] In some embodiments, the tooth pin is provided with external threads at a right side position extending from the through hole for assembling a locking nut; the tooth pin moves left under the elastic force of the spring, so that the locking nut abuts against the fixed seat to achieve the axial limiting of the tooth pin; and / or,

[0035] The fixed seat is provided with an end cover on the side close to the tooth pin, the end cover is provided with a through hole for the tooth pin to pass through, at least one protrusion is arranged on the inner circumferential surface of the through hole, the outer circumferential surface of the tooth pin is provided with an elongated sliding groove corresponding to the protrusion, and the protrusion is arranged in the elongated sliding groove; the tooth pin moves left under the elastic force of the spring, so that the protrusion abuts against the root of the elongated sliding groove to achieve the axial limiting of the tooth pin.

[0036] In some embodiments, the tooth pin is provided with a pull ring or handle at the right end of the right side position extending from the through hole, a pulley assembly is arranged on the hanger, one end of a pull rope is connected with the pull ring or handle, and the other end of the pull rope passes through the pulley assembly to change the direction of the pull rope; manual pulling of the pull rope overcomes the elastic force of the spring, so that the tooth pin moves right to release the locking of the box door limiting block.

[0037] In some embodiments, the box door limiting block has a C-shaped structure as a whole, and the middle region is connected to the hinged seat of the hanger; the top part of the box door limiting block is provided with two parts, the bottom surface of part I is provided with a sharp head with an outward convex arc surface, which is used to push the tooth pin in the reset limiting device to retract, and the top surface of part II is provided with a sharp head with an outward convex arc surface, which is used to push the tooth pin II in the locking limiting device to retract.

[0038] In some embodiments, the contact position of part I with the tooth pin is lower than the contact position of part II with the tooth pin II, so as to achieve the following locking relationship:

[0039] When part I cooperates with the tooth pin to form a locking state, the locking limiting device cannot lock the box door limiting block, and the box door limiting block is in an open state.

[0040] When part II cooperates with the tooth pin II to form a locking state, the reset limiting device cannot lock the box door limiting block, and the box door limiting block is in a closed state.

[0041] In a second aspect, the present application provides a gravity-triggered container lifting and tilting unloading method, which is realized by using the gravity-triggered container lifting and tilting unloading mechanism, and the specific scheme is as follows:

[0042] When the container is lifted, the locking and limiting device locks the door limiting block, so that the door limiting block abuts against the side door of the container to prevent the door from opening and material from leaking during lifting of the container;

[0043] When the hanger is tilted to the left to dump material, the self-triggering mechanism is driven by gravity to move the locking and limiting device to the right to release the locking of the door limiting block, the door limiting block is rotated to the right to release the displacement constraint of the side door of the container, and the side door of the container is automatically opened under the action of gravity to dump material;

[0044] When the hanger continues to tilt to the left to dump material, the door limiting block continues to rotate to the right and is locked after contacting the return limiting device;

[0045] When the container is returned, the self-triggering mechanism is driven by gravity to return the locking and limiting device to the initial state; at this time, the door limiting block is always in an open state under the action of the return limiting device;

[0046] After the container is clamped again, the return limiting device is manually returned to release the locking of the door limiting block, and the door limiting block returns to the initial state under the action of gravity; the door limiting block contacts the locking and limiting device during the return process to complete the locking of the door limiting block.

[0047] The present application has the following beneficial effects:

[0048] The present application provides a gravity-triggered container lifting and dumping mechanism, which realizes lifting, carrying and dumping of the container. The present application can effectively reduce energy consumption, has low maintenance cost, is a full-mechanical structure without electronic components, and can work stably in harsh environments. BRIEF DESCRIPTION OF DRAWINGS

[0049] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and their descriptions serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0050] In the drawings:

[0051] Figure 1 It is a whole structure schematic view of a gravity-triggered container lifting and dumping mechanism of the present application;

[0052] Figure 2 It is a whole structure schematic view of a return limiting device of the present application;

[0053] Figure 3 It is a sectional view of the return limiting device of the present application;

[0054] Figure 4 Contact and locking form schematic diagram of the return limiting device and the box door limiting block of the present application (a is the contact form schematic diagram, and b is the locking form schematic diagram);

[0055] Figure 5 Connection schematic of the self-triggering mechanism and the locking limiting device of the present application Figure 1 ;

[0056] Figure 6 Connection schematic of the self-triggering mechanism and the locking limiting device of the present application Figure 2 and schematic Figure 3 (a is the connection schematic Figure 2 , b is the connection schematic Figure 3 );

[0057] Figure 7 Overall schematic diagram and partial enlarged view of the self-triggering mechanism of the present application (a is the overall schematic diagram, and b is the partial enlarged view);

[0058] Figure 8 Contact form schematic diagram of the locking limiting device and the box door limiting block of the present application;

[0059] Figure 9 Sectional view of the locking limiting device of the present application;

[0060] Figure 10 Partial view of the locking limiting device of the present application;

[0061] Figure 11 Layout schematic diagram of the pulley assembly of the present application;

[0062] Figure 12 Work flow schematic diagram of the gravity-triggered container hoisting and tilting unloading mechanism of the present application;

[0063] Figure 13 Application schematic diagram of the gravity-triggered container hoisting and tilting unloading mechanism of the present application.

[0064] The figure mark: box door limiting block 1, return limiting device 2, locking limiting device 3, hanging bracket 4, pulley assembly 5, self-triggering mechanism 6;

[0065] Part I 11, part II 12;

[0066] Pin 21, spring 22, fixed seat 23, locking nut 24, pull ring 25, end cover 26, long sliding groove 27, protrusion 28;

[0067] Sliding seat 31, pin 32, spring 33, end cover 34, long sliding groove 35, protrusion 36;

[0068] Pulley one 51, pulley two 52;

[0069] Counterweight 61, link one 62, link two 63, link three 64, swing lever 65, baffle 66, circular ring 67.

[0070] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way and are merely illustrating the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments will be described clearly and completely below by referring to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application but not to limit the scope of the present application.

[0072] In the description of the present application, it should be noted that the terms “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0073] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connecting”, “connection” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] As Figure 1 , Figure 13As shown in the figure, a gravity trigger type container lifting and dumping mechanism includes a lifting frame 4, a box door limiting block 1, a locking limiting device 3, a gravity driven self-triggering mechanism 6 and a return limiting device 2; the lifting frame 4 is used for lifting the container; the box door limiting block 1 is hinged at one end of the lifting frame 4 close to the side door of the container, and the box door limiting block 1 is configured to press and release the pressing of the side door of the container; when the box door limiting block 1 is in the pressing state, the side door of the container is always in the closed state; the locking limiting device 3 is installed on the lifting frame 4 close to the box door limiting block 1; the self-triggering mechanism 6 is installed on the lifting frame 4, and the self-triggering mechanism 6 is connected with the locking limiting device 3; when the lifting frame 4 is in the horizontal state, the self-triggering mechanism 6 does not act, and the locking limiting device 3 locks the box door limiting block 1 to make it in the closed state to press the side door of the container; when the lifting frame 4 is in the inclined state at a preset angle, the self-triggering mechanism 6 acts under the driving of gravity, so that the locking limiting device 3 releases the locking of the box door limiting block 1; the return limiting device 2 is installed on the lifting frame 4 close to the box door limiting block 1; when the locking limiting device 3 releases the locking of the box door limiting block 1, the return limiting device 2 locks the box door limiting block 1 to make it always in the open state to release the pressing of the side door of the container, and only through the return of the return limiting device 2 by external force, the locking of the box door limiting block 1 can be released, and then the locking limiting device 3 locks the box door limiting block 1.

[0075] The specific structure of the self-triggering mechanism is further described below.

[0076] As shown in the figure, Figure 5 , Figure 6 , Figure 7 As shown in the figure, the self-triggering mechanism 6 includes a pendulum mechanism and a multi-link mechanism; the pendulum mechanism includes a pendulum rod 65 and a counterweight 61, the counterweight 61 is fixed at the top of the pendulum rod 65, and the bottom of the pendulum rod 65 is installed on a hinge seat located on the lifting frame 4; one end of the multi-link mechanism is hinged with the pendulum rod 65, and the other end is hinged with the locking limiting device 3; after the lifting frame 4 is inclined to the left, the pendulum mechanism rotates to the left under the action of gravity, drives the locking limiting device 3 to slide to the right through the multi-link mechanism to release the locking of the box door limiting block 1, so that it rotates to the right under the action of gravity, releases the displacement constraint of the side door of the container, and the side door of the container is automatically opened under the action of gravity to dump the material.

[0077] Further solutions are as follows, Figure 7As shown, the multi-link mechanism includes link 1 62, link 2 63 and link 3 64; one end of link 1 62 is hingedly connected to the middle region of swing lever 65; one end of link 3 64 is hingedly connected to the tail of locking and limiting device 3; the middle region of link 2 63 is hingedly connected to the support lever on hanger 4; one end of link 2 63 is hingedly connected to the other end of link 1 62; the other end of link 2 63 is hingedly connected to the other end of link 3 64.

[0078] Further, as shown in Figure 12 As shown, when hanger 4 is in the horizontal state, the pendulum mechanism can be tilted to the right by an angle A through the positioning mechanism; when the hanger is tilted by an angle A, the center of gravity of counterweight 61 is in the vertical position; when the hanger is tilted beyond the angle A, the center of gravity is offset, causing the counterweight 61 to rotate to the left to drive the multi-link mechanism.

[0079] It should be noted that during the lifting and transporting of the container, the hanger 4 may sway, causing it to tilt; if the pendulum mechanism does not tilt (perpendicular to the hanger), the center of gravity of the pendulum mechanism is offset, further driving the multi-link mechanism to move, causing the container door limiting block to release the pressure on the container side door, and the material may tilt out during lifting and transporting, which is extremely dangerous and must be avoided. Therefore, the pendulum mechanism is tilted by an angle A, so that even if the hanger tilts during lifting and transporting, the pendulum mechanism will not have its center of gravity offset to drive the multi-link mechanism to move.

[0080] Preferably, the angle A is in the range of 20-30 degrees.

[0081] The following will be described in conjunction with the accompanying Figure 12 The specific movement process of the above pendulum mechanism during lifting and transporting is given.

[0082] Q1 tilting process: after the container is lifted and transported to the appropriate position, the container is tilted to unload the goods. When the lifting device is tilted by 25°, the center of gravity of the counterweight is in the vertical position. When the angle exceeds 25°, the center of gravity is offset, causing the counterweight to fall to the left (falling stroke 20°), and the driving device A (i.e. the locking and limiting device and the return limiting device) drives the container door limiting block to rotate, and at the same time the container side door is automatically opened under the action of gravity, and the unloading begins.

[0083] Q2 return process: after unloading is completed, the container is tilted in the opposite direction to return to the original state. When the container is tilted in the opposite direction by -45°, the center of gravity of the counterweight is in the vertical position. When the angle exceeds -45°, the counterweight falls to the right, returning to the initial state, waiting for the next work cycle. At this time, the container door limiting block is always in the open state under the action of device A (i.e. the locking and limiting device and the return limiting device).

[0084] Q3 clamping process: before re-clamping the container, the door limiting block is in the open state under the action of device A (i.e. the locking limiting device and the return limiting device). After the container is clamped, device A (i.e. the locking limiting device and the return limiting device) is manually operated to make the door limiting block close, so as to enter the Q1 tilting process and perform cyclic work.

[0085] Further solutions, as shown in Figure 7 , the hinge hole of the hinge seat extends outwardly a baffle 66 with a notch, the end of the rotating shaft of the swing lever 65 is fixed with a protruding ring 67, the protruding ring 67 is located in the center hole of the baffle 66, and the protrusion is located in the notch. After the swing lever 65 rotates, the protrusion contacts the baffle 66 to limit the swing lever 65; the protruding ring 67 and the baffle 66 form a positioning mechanism.

[0086] The specific structure of the above-mentioned locking limiting device is further described below.

[0087] As shown in Figure 8 , Figure 9 , the locking limiting device 3 includes a sliding seat 31, a second pin 32 and a second spring 33. The sliding seat 31 is connected to the slide rail on the hanger 4 and can move linearly in the left and right directions on the slide rail. The sliding seat 31 is provided with a groove with an opening facing the door limiting block 1. The second pin 32 is inserted into the groove of the sliding seat 31 and can move linearly in the left and right directions in the groove. The second spring 33 is arranged in the groove of the sliding seat 31, and the second pin 32 penetrates into the second spring 33. The second pin 32 can freely stretch and retract in the sliding seat 31 by compressing the second spring 33.

[0088] Further solutions, as shown in Figure 8 , Figure 9 , the second pin 32 is provided with a sharp head with an outer convex arc surface at the part extending from the groove. After the return limiting device 2 releases the locking of the door limiting block 1, the door limiting block 1 rotates left to return under the action of gravity. In the process of returning, the door limiting block 1 contacts the outer convex arc surface of the sharp head to push the second pin 32 to move right. When the contact passes the topmost point, the second pin 32 returns to complete the locking of the door limiting block 1.

[0089] Further solutions, as shown in Figure 9 , Figure 10 , the sliding seat 31 is provided with an end cover 34 on the side close to the second pin 32. The end cover 34 is provided with a through hole for the second pin 32 to penetrate. At least one protrusion 36 is arranged on the inner circumferential surface of the through hole. The outer circumferential surface of the second pin 32 is provided with an elongated sliding groove 35 corresponding to the protrusion 36, and the protrusion 36 penetrates into the elongated sliding groove 35. The second pin 32 moves left under the elastic force of the second spring 33, so that the protrusion 36 abuts against the root of the elongated sliding groove 35 to realize the axial limiting of the second pin 32.

[0090] The specific structure of the above-mentioned return limit device is further described below.

[0091] like Figure 2 、 Figure 3 As shown, the return limit device 2 includes a fixed seat 23, a tooth pin 21 and a spring 22; the fixed seat 23 is installed on the hanger 4, and the fixed seat 23 is provided with a through hole opening toward the door limit block 1; the tooth pin 21 is passed through the through hole of the fixed seat 23, and the tooth pin 21 can move linearly in the left and right directions in the through hole; the spring 22 is arranged in the through hole of the fixed seat 23, and the tooth pin 21 is passed through the spring 22, and the tooth pin 21 can freely expand and contract in the fixed seat 23 by compressing the spring 22.

[0092] Further solutions, such as Figure 2 、 Figure 3 、 Figure 4 As shown, the left side portion of the tooth pin 21 extending from the through hole is set as a pointed tip with a convex arc surface on the top surface; the door limit block 1 rotating to the right contacts the convex arc surface of the pointed tip, pushing the tooth pin 21 to move to the right. When the contact passes the top point, the tooth pin 21 rebounds to complete the locking of the door limit block 1.

[0093] Further solutions, such as Figure 2 、 Figure 3 As shown, in the first embodiment, the threaded pin 21 is provided with an external thread on the right side extending from the through hole, for assembling the locking nut 24; the threaded pin 21 moves to the left under the elastic force of the spring 22, causing the locking nut 24 to abut against the fixing seat 23, thereby achieving axial limitation of the threaded pin 21. In the second embodiment, the fixing seat 23 is provided with an end cap 26 on the side near the threaded pin 21. The end cap 26 is provided with a through hole for the threaded pin 21 to pass through, and the inner circumferential surface of the through hole is provided with at least one protrusion 28. The outer circumferential surface of the threaded pin 21 is provided with an elongated slot 27 corresponding to the protrusion, and the protrusion 28 is inserted into the elongated slot 27; the threaded pin 21 moves to the left under the elastic force of the spring 22, causing the protrusion 28 to abut against the root of the elongated slot 27, thereby achieving axial limitation of the threaded pin 21.

[0094] It should be noted that the above two solutions are provided for axially limiting the tooth pin 21. Of course, the above two solutions can also exist at the same time to jointly limit the axial position of the tooth pin 21.

[0095] Further solutions, such as Figure 2 、 Figure 3As shown, the tooth pin 21 is provided with a pull ring 25 or handle at the right end extending out of the through hole, the hanger 4 is provided with a pulley assembly 5, one end of the pull rope is connected with the pull ring 25 or handle, the other end of the pull rope passes through the pulley assembly 5 to change the direction of the pull rope, and the operator on the ground manually pulls the pull rope to overcome the elastic force of the spring 22, so that the tooth pin 21 moves to the right, and the locking of the box door limiting block 1 is released.

[0096] It should be noted that, as Figure 11 shown, the pulley assembly 5 includes a horizontal pulley 51 and a vertical pulley 52, the horizontal pulley 51 is used for horizontal direction turning of the pull rope, and the vertical pulley 52 is used for vertical direction turning of the pull rope.

[0097] The specific structure of the box door limiting block will be further described below.

[0098] As shown in Figure 4 , Figure 8 shown, the box door limiting block 1 is in a C-shaped structure as a whole, and the middle region is connected to the hinged seat of the hanger 4; the top part of the box door limiting block 1 is bifurcated into two parts, the middle part I 11 is provided with a sharp head with an outer convex arc surface as a bottom surface, which is used for pushing the tooth pin 21 in the reset limiting device 2 to shrink, and the part II 12 is provided with a sharp head with an outer convex arc surface as a top surface, which is used for pushing the tooth pin 32 in the locking limiting device 3 to shrink; wherein the contact position of the part I 11 with the tooth pin 21 is lower than the contact position of the part II 12 with the tooth pin 32, thereby realizing the following locking relationship: when the part I 11 cooperates with the tooth pin 21 to form a locking state, the locking limiting device 3 cannot lock the box door limiting block 1, and the box door limiting block 1 is in an open state; when the part II 12 cooperates with the tooth pin 32 to form a locking state, the reset limiting device 2 cannot lock the box door limiting block 1, and the box door limiting block 1 is in a closed state.

[0099] The application also provides a gravity-triggered container lifting and tilting unloading method, and the specific process is as follows:

[0100] When the container is lifted, the locking limiting device 3 locks the box door limiting block 1, so that the box door limiting block 1 abuts against the side door of the container, and the door is prevented from being opened to leak materials during the lifting of the container.

[0101] When the hanger is tilted to the left to pour materials, the counterweight 61 rotates to the left under the action of gravity, drives the sliding seat 65 to slide to the right through the connecting rod 62, the connecting rod 63 and the connecting rod 64, loosens the box door limiting block 1, and makes the box door limiting block 1 rotate to the right under the action of gravity, releases the displacement constraint of the side door of the container, and the side door of the container is automatically opened under the action of gravity to pour materials.

[0102] The hanger continues to tilt to the left to pour material, the box door limiting block 1 continues to rotate to the right and contacts the tooth pin one 21 of the reset limiting device 2, pushes the tooth pin one 21 to move to the right, and when the contact passes the topmost point, the tooth pin one 21 rebounds to complete the rotation locking of the box door limiting block 1;

[0103] When the pouring is completed and the container is reset, the counterweight 61 rotates to the right under the action of gravity, drives the sliding seat 65 to slide to the left through the connecting rod one 62, the connecting rod two 63 and the connecting rod three 64, so that the locking limiting device 3 returns to the initial state; at this time, the box door limiting block 1 is always in an open state under the action of the reset limiting device 2;

[0104] When the container is re-clamped, the pull ring 25 of the reset limiting device 2 is manually pulled to make the tooth pin one 21 move to the right and loosen the constraint of the box door limiting block 1; the box door limiting block 1 returns to the initial state under the action of gravity; wherein the box door limiting block 1 contacts the tooth pin two 32 of the locking limiting device 3 in the reset process, pushes the tooth pin two 32 to move backward, and when the contact passes the topmost point, the tooth pin two 32 rebounds to complete the locking of the box door limiting block 1.

[0105] In summary, the application provides a gravity-triggered container hoisting and tilting unloading mechanism, which realizes the following functions and effects:

[0106] 1. Gravity-triggered mechanical transmission, energy saving and high efficiency, and reducing operating cost;

[0107] 2. Counterweight-rod pure mechanical structure, precise synchronization, preventing material leakage, and applicable to harsh environments;

[0108] 3. Double-tooth pin mechanical interlocking safety system, safe and reliable, and reducing accident risk.

[0109] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the application can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the present specification.

[0110] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments but not others, combinations of features of different embodiments also mean within the protection scope of the application and form different embodiments. For example, in the above embodiments, those skilled in the art can use in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.

[0111] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the above-mentioned prompt without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiments made according to the technical essence of the present application without departing from the technical solution of the present application still belong to the scope of the present application.

Claims

1. A gravity-triggered container lifting and tipping unloading mechanism, characterized in that: include: Crane, used for lifting containers; A container door stopper is hingedly connected to one end of the hanger near the container side door, and the container door stopper is configured to press and release the container side door; when the container door stopper is in a pressed state, the container side door is always in a closed state; A locking limit device is installed on a hanger close to the door limit block; A gravity-driven self-triggering mechanism is mounted on the hanger and connected to the locking and limiting device. When the hanger is in a horizontal state, the self-triggering mechanism does not operate, and the locking and limiting device locks the door limit block, keeping it in a closed state to press the container side door. When the hanger is in an inclined state at a preset angle, the self-triggering mechanism operates under gravity, causing the locking and limiting device to release the lock on the door limit block. The return limit device is installed on a hanger close to the door limit block; when the locking limit device releases the lock on the door limit block, the return limit device will lock the door limit block so that it is always in an open state to release the pressure on the container side door. Only by returning the return limit device through external force can the lock on the door limit block be released, thereby realizing the locking limit device to lock the door limit block.

2. A gravity-triggered container lifting and tipping unloading mechanism according to claim 1, characterized in that: The self-triggering mechanism comprises: a pendulum mechanism comprising a pendulum rod and a counterweight, wherein the counterweight is fixed to the top of the pendulum rod and the bottom of the pendulum rod is mounted on a hinged seat located on the hanger; A multi-link mechanism, one end of which is hinged to the pendulum rod and the other end of which is hinged to the locking limit device. When the hanger tilts to the left, the pendulum mechanism rotates to the left under the action of gravity, and drives the locking limit device to slide to the right through the multi-link mechanism to release the lock on the door limit block, causing it to rotate to the right under the action of gravity, releasing the displacement constraint of the container side door, and the container side door automatically opens under the action of gravity to unload materials.

3. The gravity-triggered container lifting and tipping unloading mechanism according to claim 2, characterized in that: The multi-link mechanism comprises: a first connecting rod, one end of which in the longitudinal direction is hinged to the middle region of the rocker arm; a connecting rod three, one end of which in the length direction is hinged to the tail of the locking and limiting device; The middle area of ​​the connecting rod is hinged on the support rod on the hanger, one end of the connecting rod is hinged to the other end of the connecting rod, and the other end of the connecting rod is hinged to the other end of the connecting rod.

4. The gravity-triggered container lifting and tipping unloading mechanism according to claim 2, characterized in that: When the hanger is in a horizontal state, the pendulum mechanism can tilt to the right at an angle A through the positioning mechanism; when the hanger is tilted at angle A, the center of gravity of the counterweight is in a vertical position. After the hanger tilts beyond angle A, the center of gravity shifts, causing the counterweight to rotate to the left and drive the multi-link mechanism.

5. The gravity-triggered container lifting and tipping unloading mechanism according to claim 4, characterized in that: The range of the angle A is 20 degrees to 30 degrees.

6. The gravity-triggered container lifting and tipping unloading mechanism according to claim 4, characterized in that: A baffle with a notch extends outward from the hinge hole of the hinge seat, and a circular ring with a protrusion is fixed to the end of the rotating shaft of the rocker arm. The circular ring is located in the center hole of the baffle, and the protrusion is located in the notch. After the rocker arm rotates, the protrusion contacts the baffle to limit the rocker arm; the circular ring and the baffle form the positioning mechanism.

7. The gravity-triggered container lifting and tipping unloading mechanism according to claim 1, characterized in that: The locking and limiting device comprises: The slide is connected to the slide rail on the hanger, and the slide can move linearly in the left and right directions on the slide rail; the slide is provided with a groove opening toward the door limit block; A second tooth pin is inserted into the groove of the slide seat, and the second tooth pin can move linearly in the left and right directions in the groove; Spring 2 is arranged in the groove of the slide seat, and tooth pin 2 is inserted into spring 2. Tooth pin 2 can freely expand and contract in the slide seat by compressing spring 2.

8. The gravity-triggered container lifting and tipping unloading mechanism according to claim 7, characterized in that: The part of the tooth pin 2 extending from the groove is set as a pointed head with a convex arc surface on the bottom; when the return limit device unlocks the door limit block, the door limit block rotates to the left under the action of gravity to return, and the door limit block contacts the convex arc surface of the pointed head during the return process, pushing the tooth pin 2 to move to the right. When the contact passes the top point, the tooth pin 2 rebounds to complete the locking of the door limit block.

9. The gravity-triggered container lifting and tipping unloading mechanism according to claim 7, characterized in that: The sliding seat is provided with an end cover on the side close to the tooth pin 2, and the end cover is provided with a through hole for the tooth pin 2 to pass through, and at least one protrusion is provided on the inner circumferential surface of the through hole, and the outer circumferential surface of the tooth pin 2 is provided with a long sliding groove corresponding to the protrusion, and the protrusion is inserted into the long sliding groove; the tooth pin 2 moves to the left under the elastic force of the spring 2, so that the protrusion abuts against the root of the long sliding groove, thereby realizing axial limitation of the tooth pin 2.

10. The gravity-triggered container lifting and tipping unloading mechanism according to claim 1, characterized in that: The return limit device includes: A fixing seat is installed on the hanger, and the fixing seat is provided with a through hole opening toward the door limit block; A tooth pin 1 is passed through the through hole of the fixing seat, and the tooth pin 1 can move linearly in the left and right directions in the through hole; Spring 1 is arranged in the through hole of the fixing seat, and tooth pin 1 is inserted into spring 1. Tooth pin 1 can freely expand and contract in the fixing seat by compressing spring 1.

11. The gravity-triggered container lifting and tipping unloading mechanism according to claim 10, characterized in that: The tooth pin 1 is set as a pointed head with a convex arc surface on the top surface at the left side extending from the through hole; the door limit block rotating to the right contacts the convex arc surface of the pointed head, pushing the tooth pin 1 to move to the right. When the contact passes the top point, the tooth pin 1 rebounds to complete the locking of the door limit block.

12. The gravity-triggered container lifting and tipping unloading mechanism according to claim 10, characterized in that: The tooth pin 1 is provided with an external thread on the right side extending from the through hole for assembling the locking nut; the tooth pin 1 moves to the left under the elastic force of the spring 1, so that the locking nut abuts against the fixing seat, thereby achieving axial limitation of the tooth pin 1; and / or, The fixing seat is provided with an end cover on the side close to the tooth pin 1, and the end cover is provided with a through hole for the tooth pin 1 to pass through, and at least one protrusion is provided on the inner circumferential surface of the through hole, and the outer circumferential surface of the tooth pin 1 is provided with an elongated sliding groove corresponding to the protrusion, and the protrusion is inserted into the elongated sliding groove; the tooth pin 1 moves to the left under the elastic force of spring 1, so that the protrusion abuts against the root of the elongated sliding groove, thereby realizing axial limitation of the tooth pin 1.

13. The gravity-triggered container lifting and tipping unloading mechanism according to claim 10, characterized in that: The tooth pin 1 is provided with a pull ring or handle at the right end extending from the through hole, and a pulley assembly is installed on the hanger. One end of the pull rope is connected to the pull ring or handle, and the other end of the pull rope passes through the pulley assembly to change the direction of the pull rope. Manually pulling the pull rope overcomes the elastic force of spring 1, causing the tooth pin 1 to move to the right, thereby releasing the lock on the box door limit block.

14. The gravity-triggered container lifting and tipping unloading mechanism according to claim 1, characterized in that: The door stop block is an overall C-shaped structure, wherein the middle area is connected to the hinged seat of the hanger; the top portion of the door stop block is bifurcated into two parts, wherein part I is configured as a pointed head with an outwardly convex arc surface at the bottom, which is used to push the tooth pin 1 in the return limit device to retract, and part II is configured as a pointed head with an outwardly convex arc surface at the top, which is used to push the tooth pin 2 in the locking limit device to retract; The contact position between the portion I and the tooth pin 1 is lower than the contact position between the portion II and the tooth pin 2, thereby achieving the following locking relationship: When part I and the tooth pin 1 are in a locked state, the locking limit device cannot lock the door limit block, and the door limit block is in an open state; When part II and tooth pin 2 are in a locked state, the return limit device cannot lock the door limit block, and the door limit block is in a closed state.

15. A gravity-triggered container lifting and tipping unloading method, implemented using the gravity-triggered container lifting and tipping unloading mechanism according to any one of claims 1 to 14, characterized in that: When lifting a container, the locking limit device locks the door limit block to make it press against the container side door to prevent the door from opening and leaking materials during the container lifting process; When the hanger tilts to the left to unload materials, the self-triggering mechanism is driven by gravity, causing the locking limit device to move to the right to release the lock on the container door limit block. The container door limit block rotates to the right to release the displacement constraint of the container side door. The container side door automatically opens under the action of gravity to unload materials. The hanger continues to tilt to the left to unload the material, and the door limit block continues to rotate to the right and contacts the return limit device to be locked; After unloading is completed and the container returns to its original position, the self-triggering mechanism is driven by gravity to return the locking limit device to its initial state. At this time, the door limit block is always in the open state under the action of the return limit device. After the container is re-clamped, the return limit device is manually returned to its original position to release the lock on the door limit block. The door limit block returns to its original state under the action of gravity; during the return process, the door limit block contacts the locking limit device to complete the locking of the door limit block.

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