A lifting device for container

Abstract

The present invention relates to the technical field of lifting equipment, and specifically provides a lifting device for containers, comprising two slide rails arranged parallel to each other, a gantry is slidably arranged on the slide rails, a limiting mechanism is arranged at the end of the slide rails, the limiting mechanism comprises a first deceleration block and a second deceleration block, the first deceleration block is elastically and telescopically arranged on the gantry, and the second deceleration block is elastically arranged at the end of the slide rail, and multi-stage deceleration of the gantry is achieved by arranging the first deceleration block and the second deceleration block, so that the gantry can gradually slow down when it stalls in windy weather, which can effectively reduce the inertia force, thereby reducing the damage of the gantry to the track, and at the same time can effectively prevent the gantry from leaving the slide rail, and clamping components are arranged on both sides of the second deceleration block to increase the friction of the second deceleration block, thereby improving the deceleration effect of the second deceleration block, and can more efficiently stop the gantry.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, and in particular to a hoisting device for a container. Background Art

[0002] A hoisting device is a mechanical device used to lift and move heavy objects. It is widely used in many fields such as construction, transportation, and manufacturing. In scenarios such as container transportation, construction, and warehouse management, the hoisting device plays a vital role. It achieves safe lifting and moving of objects by fixedly connecting with the objects being lifted (such as containers, steel, equipment, etc.), greatly improving work efficiency and reducing labor costs.

[0003] For example, Chinese patent CN219429545U discloses a gantry crane for containers. This solution adjusts the height of the guide frame by setting a lifting hydraulic cylinder, thereby adjusting the suspension height of the container, thereby improving safety performance; at the same time, by setting a rack and an electric push rod to lock the driven gear, the stability and stopping performance after rotation are improved.

[0004] However, in the above scheme, no limit blocks are provided on the slide rails at the bottom of the gantry crane. When the weather is severe and extreme, or the personnel fail to brake in time due to negligence, or the iron shoes malfunction, the gantry crane may stall, be blown by the wind and slide uncontrollably on the slide rails, causing the gantry to detach from the slide rails, damaging the gantry crane, and even causing safety accidents in serious cases. Summary of the invention

[0005] Based on this, it is necessary to provide a lifting device for containers to address the problem that the current gantry crane is prone to derailment due to stalling on the slide rail.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A lifting device for a container, comprising:

[0008] Slide rails, two of which are parallel to each other and fixedly arranged on the port ground;

[0009] A gantry, wherein the gantry has two legs and is slidably disposed on the slide rails respectively, and the gantry can slide along the length direction of the slide rails;

[0010] A limiting mechanism, the limiting mechanism is used to limit the gantry from being separated from the slide rail, the limiting mechanism comprises a first deceleration block and a second deceleration block, the first deceleration block is telescopically arranged on the support leg, a first elastic member is arranged between the first deceleration block and the support leg, and when the speed of the gantry is greater than a preset speed, the first elastic member is released to push the gantry to perform a first-stage deceleration;

[0011] The second deceleration block is elastically arranged at the end of the slide rail, and the first deceleration block hits the second deceleration block to perform secondary deceleration.

[0012] Furthermore, a stop block is provided on the slide rail, and the stop block is close to the second deceleration block and away from the end of the slide rail. A connecting block is provided at the connection between the first deceleration block and the support leg, and a limiting rod is provided on the connecting block. The limiting rod can make the first elastic member be in a compressed state. When the gantry speed is lower than a preset speed, the limiting rod hits the stop block and stops. When the gantry speed is higher than the preset speed, the limiting rod hits the stop block and releases the restriction on the first elastic member.

[0013] Furthermore, a guide rod is arranged between the first deceleration block and the connecting block, the first elastic member is located at the outer periphery of the guide rod, the guide rod is parallel to the slide rail and is slidably inserted into the connecting block, the guide rod can move axially, a first limiting hole is arranged on the outer periphery of the guide rod, a second limiting hole is arranged on the connecting block, and the limiting rod passes through the first limiting hole and the second limiting hole at the same time to limit the axial movement of the guide rod.

[0014] Furthermore, clamping assemblies are provided on both sides of the second speed reduction block, and the clamping assemblies can clamp both sides of the second speed reduction block to provide friction force to the second speed reduction block.

[0015] Furthermore, the clamping assembly includes a fixed block and a movable clamping plate, the fixed blocks are respectively fixed on both sides of the slide rail, the fixed block is hollow inside and one end close to the second deceleration block is open, the movable clamping plate is located inside the fixed block, the edge of the movable clamping plate is slidably sealed with the inner wall of the fixed block, and when the cavity pressure between the movable clamping plate and the fixed block increases, the movable clamping plate moves toward the direction close to the second deceleration block to clamp the second deceleration block.

[0016] Furthermore, an air groove is provided on one end of the second deceleration block close to the first deceleration block, and a corrugated hose is provided on the second deceleration block, and the corrugated hose connects the air groove and the cavity in the fixed block. The first deceleration block hits the second deceleration block to enter the air groove, and the gas in the air groove enters the fixed block through the corrugated hose to increase the air pressure in the fixed block.

[0017] Furthermore, an air inlet channel and an air outlet channel are provided in the air groove, and a first one-way valve is provided in the air inlet channel, so that external gas can enter the air groove through the air inlet channel when the air groove is under negative pressure, and a second one-way valve is provided in the air outlet channel, so that the gas in the air groove can enter the interior of the fixed block through the air outlet channel and the corrugated hose.

[0018] Furthermore, a plurality of tension springs are arranged between the movable clamping plate and the inner wall of the fixed block.

[0019] Furthermore, a limit block is provided on the end of the slide rail, a second elastic member is provided on the limit block, one end of the second elastic member is fixed on the limit block, and the other end of the second elastic member is fixed on the second deceleration block.

[0020] Furthermore, the second deceleration block is slidably connected to the slide rail and a roller is provided at the connection position.

[0021] The beneficial effects of the present invention are:

[0022] The present invention realizes multi-stage deceleration of the gantry by arranging the first deceleration block and the second deceleration block, so that the gantry can gradually slow down when it stalls in windy weather, which can effectively reduce the inertia force, thereby reducing the damage of the gantry to the track, and can effectively prevent the gantry from falling off the slide rail.

[0023] The present invention provides a guide rod which plays a guiding role, so that the reaction force when the first elastic member is released can be vertically applied to the connecting block.

[0024] The present invention provides a stopper and a limiting rod so that the gantry is tested once before performing a first-stage deceleration to determine whether a subsequent multi-stage deceleration function needs to be started, thereby reducing the use frequency of the second deceleration block.

[0025] The present invention increases the friction force of the second deceleration block by arranging a clamping assembly, thereby improving the deceleration effect of the second deceleration block, and can stop the gantry more efficiently, thereby further preventing the gantry from detaching from the slide rail.

[0026] The present invention arranges a roller under the second deceleration block, so that the sliding friction between the second deceleration block and the slide rail is converted into rolling friction, thereby reducing the wear between the second deceleration block and the slide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a container hoisting device provided in one embodiment of the present invention;

[0028] Figure 2 An exploded view of a limiting mechanism of a container hoisting device provided in one embodiment of the present invention;

[0029] Figure 3 for Figure 2 A partial enlarged view of a portion X of a lifting device for a container provided in an embodiment;

[0030] Figure 4A schematic structural diagram of a limit mechanism for a container hoisting device provided in one embodiment of the present invention;

[0031] Figure 5 for Figure 4 A cross-sectional view along AA of a limiting mechanism of a container hoisting device provided in an embodiment;

[0032] Figure 6 for Figure 5 A partial enlarged view of part Y of a container hoisting device provided in an embodiment;

[0033] Figure 7 for Figure 4 A cross-sectional view along line BB of a limiting mechanism of a container hoisting device provided in an embodiment;

[0034] Figure 8 for Figure 7 A partial enlarged view of part Z of a lifting device for a container provided in an embodiment;

[0035] Fig. 9 for Figure 4 A cross-sectional view along BB of a container hoisting device provided in one embodiment when a first deceleration block enters an air groove;

[0036] Fig.10 for Figure 4 A cross-sectional view along line BB of a container hoisting device provided in one embodiment when a first deceleration block is separated from an air groove.

[0037] in:

[0038] 100, gantry; 110, outrigger; 111, sliding wheel; 120, slide rail;

[0039] 200, limiting mechanism; 210, first deceleration block; 220, first elastic member; 230, guide rod; 231, first limiting hole; 240, connecting block; 241, second limiting hole; 242, limiting rod; 250, stopper; 260, second deceleration block; 261, air groove; 262, air inlet channel; 263, first one-way valve; 264, air outlet channel; 265, second one-way valve; 266, groove; 267, roller; 270, second elastic member; 280, limiting block; 281, sliding hole; 290, connecting rod;

[0040] 300, clamping assembly; 310, fixing block; 311, anti-drop buckle; 320, movable splint; 321, sealing sleeve; 330, tension spring; 340, corrugated hose. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] Refer to the following Figure 1-Figure 10 A lifting device for a container provided by the present invention is described below.

[0045] A container hoisting device includes two slide rails 120 arranged parallel to each other, the two slide rails 120 are fixedly arranged on the ground of a port, a gantry 100 is slidably arranged on the two slide rails 120, and the gantry 100 is specifically slidably arranged on the slide rails 120 through two legs 110, and a sliding wheel 111 is installed on the legs 110, and the sliding wheel 111 slides along the slide rails 120. A lifting mechanism (not shown in the figure) is arranged on the gantry 100, and the lifting mechanism is used to lift the container. After the container is lifted, the gantry 100 moves on the slide rails 120 to be transported to a designated position. After reaching the designated position, the lifting mechanism lowers the container, thereby completing the lifting of the container.

[0046] The gantry 100 installed in the port will inevitably encounter extreme situations, such as hurricanes, tsunamis and other extreme natural disasters. At this time, the gantry 100 is too large, so a brake structure or iron shoes are set on the support legs 110 to fix the gantry 100 on the slide rail 120. However, when the brake structure and the iron shoes fail due to improper maintenance, safety accidents are likely to occur. Therefore, a limit mechanism 200 is set on the slide rail 120 to add an "insurance" for the gantry 100. The limit mechanism 200 is set at the end of the slide rail 120 to prevent the gantry 100 from detaching from the slide rail 120 when the brake fails.

[0047] The limiting mechanism 200 of the embodiment of the present invention includes a first deceleration block 210 and a second deceleration block 260. The first deceleration block 210 is used to perform a primary deceleration on the gantry 100, and the second deceleration block 260 is used to perform a secondary deceleration on the gantry 100. The first deceleration block 210 is telescopically arranged on the support leg 110 of the gantry 100. A first elastic member 220 is arranged between the first deceleration block 210 and the support leg 110 of the gantry 100. The first elastic member 220 is in a compressed state in an initial state (the initial state refers to the state when the gantry 100 is working normally). When a In extreme cases, when the brake structure of the gantry 100 fails and the speed of the gantry 100 moving on the slide rail 120 is greater than the preset speed (the preset speed refers to the speed that is lower than the speed when the first-stage deceleration needs to be initiated, and the preset speed can be adjusted according to actual conditions), the first elastic member 220 is released to push the first deceleration block 210 to move away from the gantry 100 leg 110, but it cannot push the gantry 100 leg 110. However, when the first elastic member 220 is released, it gives a reaction force to the gantry 100 leg 110, thereby playing a role of deceleration. This deceleration is called the first-stage deceleration.

[0048] The second deceleration block 260 is elastically arranged at the end of the slide rail 120, specifically, a limit block 280 is fixedly arranged on the end of the slide rail 120, and a second elastic member 270 is connected to the limit block 280, and the other end of the second elastic member 270 is fixedly connected to the second deceleration block 260. The initial state of the second elastic member 270 is in the original length state. At this time, the gantry 100 continues to move after the first level of deceleration, so that the first deceleration block 210 hits the second deceleration block 260, and the second deceleration block 260 compresses the second elastic member 270 to consume the kinetic energy of the gantry 100 to complete the second deceleration. This deceleration is called secondary deceleration, so that the gantry 100 can prevent the gantry 100 from leaving the slide rail 120 through multi-level deceleration.

[0049] The present invention realizes multi-stage deceleration of the gantry 100 by setting a first deceleration block 210 and a second deceleration block 260, so that the gantry 100 can gradually slow down when it stalls in windy weather, which can effectively reduce the inertia force, thereby reducing the damage of the gantry 100 to the track, and can effectively prevent the gantry 100 from detaching from the slide rail 120.

[0050] Specifically, before the gantry 100 starts the first-stage deceleration, a step is required. A stopper 250 is provided on the slide rail 120. The stopper 250 is fixedly provided on both sides of the slide rail 120 but does not affect the sliding of the gantry 100 legs 110 on the slide rail 120. The stopper 250 is close to the second deceleration block 260 and away from the end of the slide rail 120. That is, the stopper 250 is on the inner side of the second deceleration block 260. In order to facilitate the connection between the first elastic member 220 and the gantry 100 legs 110, a connecting block 240 is detachably provided on the gantry 100 legs 110. The first elastic member 220 is connected through the connecting block 240. A limiting rod 242 is provided on the connecting block 240. The limiting rod 242 pulls the first elastic member 220 into a compressed state, that is, the limiting rod 242 limits the elongation of the first elastic member 220 to keep it in a compressed state. The length of the limiting rod 242 is greater than the spacing between the stopper 250 and the slide rail 120.

[0051] When the gantry 100 passes through the block 250, the limiting rod 242 will collide with the block 250. If the speed of the gantry 100 passing through the block 250 is less than the preset speed, the limiting rod 242 will be intercepted by the block 250 when colliding with the block 250, thereby stopping the gantry 100; when the speed of the gantry 100 is greater than the preset speed and passes through the block 250, the limiting rod 242 will break after colliding with the block 250 (due to the large collision force generated by the large speed, the limiting rod 242 breaks). After the limiting rod 242 breaks, it will no longer limit the first elastic member 220, and the first elastic member 220 will be released instantly to decelerate the gantry 100 by one level.

[0052] It can be understood that the stopper 250 can be used as a criterion for determining whether to activate the first deceleration. If the gantry 100 is stopped when passing the stopper 250 on the slide rail 120, it means that the moving speed of the gantry 100 is slow, and there is no need to activate the subsequent deceleration function, thereby reducing the use frequency of the second deceleration block 260. If the gantry 100 is not stopped but passes through the stopper 250 on the slide rail 120, it means that the speed of the gantry 100 is fast, so the limit rod 242 breaks to activate the first deceleration, thereby slowing down the moving speed of the gantry 100, and then the second deceleration block 260 is used to perform the second deceleration to prevent the gantry 100 from leaving the slide rail 120.

[0053] In a further embodiment, a guide rod 230 is provided between the connecting block 240 and the first deceleration block 210, the guide rod 230 is arranged parallel to the slide rail 120, and one end of the guide rod 230 is slidably inserted into the connecting block 240, and the guide rod 230 can move axially in the connecting block 240. Specifically, a slide groove is provided in the connecting block 240, and the slide groove extends along the length and height direction of the guide rail, and the guide rod 230 is slidably inserted in the slide groove, and the other end of the guide rod 230 is fixedly connected to the first deceleration block 210, and a first limiting hole 231 is symmetrically provided on the outer circumference of a part of the guide rod 230 located in the connecting block 240, and a second limiting hole 241 is symmetrically provided on the side wall of the connecting block 240. 241 passes through the slide groove, the first elastic member 220 is sleeved on the guide rod 230, and the guide rod 230 moves into the connecting block 240 to compress the first elastic member 220. When the first elastic member 220 is compressed to the limit, the limiting rod 242 is inserted into the second limiting hole 241 and the first limiting hole 231 to prevent the limiting rod 242 from axial movement, thereby limiting the elongation of the first elastic member 220. There are two limiting rods 242 of the present invention, which are symmetrically inserted in the first limiting hole 231 and the second limiting hole 241. Only when the limiting rod 242 is broken by the impact of the block 250, the limiting rod 242 can no longer continue to limit the guide rod 230, thereby releasing the first elastic member 220 to start the first-stage deceleration.

[0054] It should be noted that the guide rod 230 in this embodiment not only serves to pull the first elastic member 220 to compress, but also serves to guide, so that the reaction force of the first elastic member 220 when released is applied to the connecting block 240 in a vertical direction (the vertical direction refers to the length direction along the slide rail 120). If the guide rod 230 is not provided, the first elastic member 220 may bend when compressed, so that the force generated by the first elastic member 220 when released cannot be applied to the connecting block 240 in a vertical direction, thereby reducing the effect of the first-stage deceleration.

[0055] In a further embodiment, a clamping assembly 300 is provided on both sides of the second deceleration block 260. The clamping assembly 300 can clamp both sides of the second deceleration block 260, thereby giving friction to the second deceleration block 260, further enhancing the secondary deceleration effect of the second deceleration block 260. It can be understood that when the first deceleration block 210 hits the second deceleration block 260 to compress the second elastic member 270, the gantry 100 is in a deceleration state at this time. If the friction is increased on the second deceleration block 260, the second deceleration block 260 becomes more difficult to push, thereby further reducing the speed of the gantry 100, and increasing the secondary deceleration effect of the second deceleration block 260.

[0056] Specifically, the clamping assembly 300 in the embodiment of the present invention includes a fixed block 310 and a movable clamp 320. The fixed blocks 310 are respectively fixedly arranged on the slide rail 120 and located on both sides of the second deceleration block 260. The fixed block 310 is hollow inside and open at one end facing the second deceleration block 260, while the movable clamp 320 is located inside the fixed block 310. The edge of the movable clamp 320 is slidably sealed with the inner wall of the fixed block 310. The movable clamp 320 can move inside the fixed block 310 along a direction perpendicular to the length direction of the slide rail 120. There is a cavity between the fixed block 310 and the movable clamp 320, and the cavity is filled with gas. When the gas in the cavity increases, the pressure in the cavity increases to push the movable clamp 320 to move in a direction close to the second deceleration block 260 to clamp the second deceleration block 260.

[0057] It should be noted that when the second speed reduction block 260 is not in use, the movable splint 320 slightly clamps the second speed reduction block 260. When the second speed reduction block 260 is hit by the first speed reduction block 210, the movable splint 320 can clamp the second speed reduction block 260 more quickly. At the same time, in order to make the movable splint 320 slide and seal in the fixed block 310, a sealing sleeve 321 is fixedly arranged on the outer periphery of the movable splint 320. The sealing sleeve 321 protrudes from the edge of the movable splint 320, and the outer dimension of the sealing sleeve 321 is slightly larger than the dimension between the inner walls of the fixed block 310. The sealing sleeve 321 is elastic, so the movable splint 320 can drive the sealing sleeve 321 to enter the fixed block 310 to fill the gap between the edge of the movable splint 320 and the inner wall of the fixed block 310 to achieve sealing. An anti-dropout buckle 311 is also provided on the outer side of the fixed block 310, one end of the anti-dropout buckle 311 is clamped on the fixed block 310, and the other end of the anti-dropout buckle 311 protrudes from the open end of the fixed block 310. The protruding portion does not affect the movable clamping plate 320 clamping the second deceleration block 260, but the protrusion can limit the sealing sleeve 321 fixed on the outer periphery of the movable clamping plate 320 from extending out of the fixed block 310, thereby preventing the clamping plate from extending too far out of the fixed block 310 and detaching from the fixed block 310.

[0058] Specifically, the function of increasing the gas inside the fixed block 310 is achieved through the following structure. An air groove 261 is provided on one end of the second deceleration block 260 close to the first deceleration block 210, and the size of the air groove 261 matches the size of the first deceleration block 210. When the first deceleration block 210 is close to the second deceleration block 260, the first deceleration block 210 will be inserted into the air groove 261 on the second deceleration block 260, thereby compressing the gas in the air groove 261. Therefore, the function of increasing the gas inside the fixed block 310 can be achieved by connecting the air groove 261 with the interior of the fixed block 310. An air outlet channel 264 is opened in the second deceleration block 260, and the end of the air outlet channel 264 is connected to the corrugated hose 340. The other end of the corrugated hose 340 is connected to the interior of the fixed block 310, so that the gas in the air groove 261 squeezed by the first deceleration block 210 can enter the interior of the fixed block 310 through the air outlet channel 264 and the corrugated hose 340. The internal air pressure of the fixed block 310 increases to push the movable clamp 320 to move toward the direction close to the second deceleration block 260, so as to clamp the second deceleration block 260. After being clamped, the second deceleration block 260 is subjected to friction, thereby increasing the deceleration effect on the gantry 100.

[0059] It should be noted that the corrugated hose 340 can be extended and retracted so as to adapt to the distance that the second deceleration block 260 moves relative to the fixed block 310. In the present invention, two sections of the corrugated hose 340 are connected to one gas outlet channel 264, and the two sections of the corrugated hose 340 are respectively connected to the inside of the fixed blocks 310 on both sides of the slide rail 120. Specifically, to facilitate the connection of the two sections of the corrugated hose 340, a three-way interface is connected to the gas outlet channel 264, one interface is connected to the gas outlet channel 264, and the other two interfaces are respectively connected to the corrugated hose 340, so that the gas inside the gas groove 261 can enter the inside of the two fixed blocks 310 through the two corrugated hoses 340 to realize the function of the movable clamping plate 320 clamping the second deceleration block 260.

[0060] More specifically, an air inlet channel 262 is provided in the air groove 261, and a first one-way valve 263 is provided inside the air inlet channel 262. The first one-way valve 263 can only allow external gas to enter the air groove 261 through the air inlet channel 262, while a second one-way valve 265 is provided in the air outlet channel 264. The second one-way valve 265 can only allow the gas in the air groove 261 to enter the fixed block 310 through the air outlet channel 264 and the corrugated hose 340.

[0061] It should be noted that when the first deceleration block 210 is not close to the second deceleration block 260, the air groove 261 on the second deceleration block 260 is in an open state, and the air inlet channel 262 does not work at this time. When the first elastic member 220 releases and pushes the first deceleration block 210 to move to the farthest distance away from the gantry 100, it is pulled by the first elastic member 220 to move in the opposite direction, so that the first deceleration block 210 performs multiple reciprocating movements in the length direction of the slide rail 120. When the first deceleration block 210 enters the air groove 261 for the first time, it can squeeze the gas in the air groove 261 through the second one-way valve 265 in the air outlet channel 264 and enter the fixed block 310. The specific state is as follows Fig. 9 Due to the existence of the second one-way valve 265 , the gas entering the fixing block 310 cannot return to the gas groove 261 .

[0062] The first deceleration block 210 is away from the second deceleration block 260 under the action of the first elastic member 220, so that the air groove 261 is in a negative pressure state. Fig.10 As shown, the gas outside the air groove 261 enters the air inlet channel 262 through the first one-way valve 263 and then enters the inside of the air groove 261. Since the gantry 100 moves in the direction close to the second deceleration block 260 and the first deceleration block 210 is under the action of the first elastic member 220, the first deceleration block 210 moves in the direction close to the second deceleration block 260 to continue to compress the air groove 261, so that the gas in the air groove 261 enters the fixed block 310 again. The first deceleration block 210 can move back and forth in the air groove 261 so that the gas in the air groove 261 continuously flows into the fixed block 310 until the first deceleration block 210 stops reciprocating and no longer continues to push the air groove 261 but moves synchronously with the second deceleration block 260. This structure is similar to an air pump, so that the gas pressure in the fixed block 310 continues to increase, and the force of the gas pushing the movable clamp 320 gradually increases to increase the friction force on the second deceleration block 260. In addition, the second elastic member 270 on the second deceleration block 260 enables the second deceleration block 260 to stop the gantry 100 and prevent the gantry 100 from leaving the slide rail 120.

[0063] In a further embodiment, a plurality of tension springs 330 are arranged between the movable splint 320 and the inner wall of the fixed block 310. The tension springs 330 enable the movable splint 320 to reset when the movable splint 320 clamps the second deceleration block 260. At the same time, a valve (not shown in the figure) is arranged on the side wall of the fixed block 310. When the second deceleration block 260 stops the gantry 100 and needs to be reset, the valve is opened, and the gas inside the fixed block 310 is discharged through the valve, and the plurality of tension springs 330 pull the movable splint 320 to reset.

[0064] Specifically, a sliding hole 281 is provided on the limit block 280 of the present invention, and a connecting rod 290 is fixedly arranged on the second deceleration block 260. The connecting rod 290 is distributed along the length direction of the slide rail 120, and the second elastic member 270 is sleeved on the connecting rod 290. When the second deceleration block 260 is pushed, the second deceleration block 260 compresses the second elastic member 270, and the connecting rod 290 on the second deceleration block 260 passes through the sliding hole 281. It can be understood that the setting of the connecting rod 290 can also play a guiding role, so that the second deceleration block 260 moves smoothly along the length direction of the slide rail 120.

[0065] In a further embodiment, a groove 266 is provided at the bottom of the second speed reduction block 260, and a plurality of rollers 267 are rotatably arranged in the groove 266. The groove 266 at the bottom of the second speed reduction block 260 is located on the slide rail 120, and the plurality of rollers 267 are just in rolling contact with the slide rail 120, thereby converting the sliding friction between the second speed reduction block 260 and the slide rail 120 into rolling friction, thereby reducing the wear between the second speed reduction block 260 and the slide rail 120.

[0066] It should be noted that the first elastic member 220 and the second elastic member 270 in the embodiment of the present invention are both springs with relatively large stiffness coefficients, so as to adapt to the gantry 100 with large volume and weight.

[0067] It is understandable that the limiting mechanism 200 of the embodiment of the present invention may also be disposed on the two ends of the slide rail 120 so as to limit the gantry 100 from being separated from the slide rail 120 from the other end of the slide rail 120 .

[0068] The specific working process of a container hoisting device provided by the present invention is described in combination with the above embodiments:

[0069] When the gantry 100 is working normally:

[0070] The first elastic member 220 between the first deceleration block 210 and the connecting block 240 is in a compressed state, and the extension of the first elastic member 220 is specifically limited by the guide rod 230 and the limiting rod 242. The connection between the guide rod 230 and the first deceleration block 210 abuts against one end of the first elastic member 220, and the other end of the first elastic member 220 abuts against the connecting block 240. The guide rod 230 moves toward the connecting block 240 to compress the first elastic member 220. When the first elastic member 220 is compressed to the limit, the limiting rod 242 passes through the first limiting hole 231 and the second limiting hole 241 to limit the axial movement of the guide rod 230 and thereby prevent the first elastic member 220 from extending.

[0071] When the gantry is stalled at 100:

[0072] When the gantry 100 stalls, the gantry 100 moves on the slide rail 120. If the speed of the gantry 100 is less than the preset speed, when the gantry 100 moves to the position of the stopper 250, the limiting rod 242 collides with the stopper 250. Due to the low speed, the limiting rod 242 will not break, so that the limiting rod 242 is blocked by the stopper 250. At this time, the gantry 100 is stopped, thereby preventing the gantry 100 from leaving the slide rail 120. If the speed of the gantry 100 is greater than the preset speed, when the gantry 100 moves to the position of the stopper 250, the limiting rod 242 directly breaks when colliding with the stopper 250, and the limiting rod 242 can no longer hinder the axial movement of the guide rod 230 When the gantry 100 is subjected to the reaction of the first elastic member 220, it starts the primary deceleration. After the two ends of the first elastic member 220 are stretched to the limit, they approach each other and then move away from each other again, so that the first deceleration block 210 moves back and forth in the length direction of the slide rail 120. Since the gantry 100 is stalled, it gradually moves toward the second deceleration block 260. When the first deceleration block 210 hits the second deceleration block 260, it starts the secondary deceleration.

[0073] When the first deceleration block 210 collides with the second deceleration block 260, the first deceleration block 210 is inserted into the gas groove 261 of the second deceleration block 260, and the gas in the gas groove 261 is squeezed through the gas outlet channel 264 and the corrugated hose 340 into the fixed block 310. When the first deceleration block 210 is away from the second deceleration block 260, the gas groove 261 is negatively pressurized, and the external gas enters the gas groove 261 through the gas inlet channel 262. The first deceleration block 210 squeezes the gas groove 261 again to transport the gas into the fixed block 310. The first deceleration block 210 reciprocates for multiple times until the first deceleration block 210 When the gas supply is stopped during synchronous movement with the second deceleration block 260, the gas inside the fixed block 310 continues to increase to increase the internal air pressure, thereby increasing the force with which the movable clamp 320 clamps the second deceleration block 260, and the friction force on the second deceleration block 260 increases. In addition, the second elastic member 270 between the second deceleration block 260 and the limit block 280 also serves to hinder the movement of the second deceleration block 260, thereby making the secondary deceleration effect of the second deceleration block 260 better. The gantry 100 stops after the secondary deceleration of the second deceleration block 260, thereby preventing the gantry 100 from detaching from the slide rail 120.

[0074] Reset:

[0075] After the gantry 100 is stopped and the weather returns to normal, a new limiting rod 242 is replaced and the valve on the fixed block 310 is opened at the same time, so that the gas inside the fixed block 310 is discharged through the valve, and the movable splint 320 loses the pushing effect of the gas. The movable splint 320 is reset under the action of multiple tension springs 330. After the movable splint 320 is reset, the valve can be closed to cope with the next extreme situation.

[0076] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A lifting device for a container, characterized in that: include: Slide rails, two of which are parallel to each other and fixedly arranged on the port ground; A gantry, wherein the gantry has two legs and is slidably disposed on the slide rails respectively, and the gantry can slide along the length direction of the slide rails; A limiting mechanism, the limiting mechanism is used to limit the gantry from being separated from the slide rail, the limiting mechanism comprises a first deceleration block and a second deceleration block, the first deceleration block is telescopically arranged on the support leg, a first elastic member is arranged between the first deceleration block and the support leg, and when the speed of the gantry is greater than a preset speed, the first elastic member is released to push the gantry to perform a first-stage deceleration; The second deceleration block is elastically arranged at the end of the slide rail, and the first deceleration block hits the second deceleration block to perform secondary deceleration; The slide rail is provided with a stopper, the stopper is close to the second deceleration block and away from the end of the slide rail, a connecting block is provided at the connection between the first deceleration block and the support leg, a limiting rod is provided on the connecting block, the limiting rod can make the first elastic member in a compressed state, when the speed of the gantry is less than a preset speed, the limiting rod hits the stopper and stops, when the speed of the gantry is greater than the preset speed, the limiting rod hits the stopper and releases the restriction on the first elastic member; A guide rod is arranged between the first deceleration block and the connecting block, the first elastic member is located at the outer periphery of the guide rod, the guide rod is parallel to the slide rail and is slidably inserted into the connecting block, the guide rod can move axially, a first limiting hole is arranged on the outer periphery of the guide rod, a second limiting hole is arranged on the connecting block, and the limiting rod passes through the first limiting hole and the second limiting hole at the same time to limit the axial movement of the guide rod.

2. The container hoisting device according to claim 1, characterized in that: Clamping assemblies are provided on both sides of the second deceleration block, and the clamping assemblies can clamp both sides of the second deceleration block to impart friction force to the second deceleration block.

3. The container hoisting device according to claim 2, characterized in that: The clamping assembly includes a fixed block and a movable clamping plate. The fixed blocks are respectively fixed on both sides of the slide rail. The interior of the fixed block is hollow and one end close to the second deceleration block is open. The movable clamping plate is located inside the fixed block. The edge of the movable clamping plate is slidably sealed with the inner wall of the fixed block. When the cavity pressure between the movable clamping plate and the fixed block increases, the movable clamping plate moves toward the direction close to the second deceleration block to clamp the second deceleration block.

4. The container hoisting device according to claim 3, characterized in that: An air groove is provided on one end of the second deceleration block close to the first deceleration block, and a corrugated hose is provided on the second deceleration block. The corrugated hose connects the air groove and the cavity in the fixed block. The first deceleration block hits the second deceleration block to enter the air groove, and the gas in the air groove enters the fixed block through the corrugated hose to increase the air pressure in the fixed block.

5. The container hoisting device according to claim 4, characterized in that: An air inlet channel and an air outlet channel are provided in the air groove. A first one-way valve is provided in the air inlet channel. When the air groove is under negative pressure, external gas can enter the air groove through the air inlet channel. A second one-way valve is provided in the air outlet channel. The second one-way valve can allow the gas in the air groove to enter the interior of the fixed block through the air outlet channel and the corrugated hose.

6. The container hoisting device according to claim 4, characterized in that: A plurality of tension springs are arranged between the movable clamping plate and the inner wall of the fixed block.

7. The container hoisting device according to claim 1, characterized in that: A limit block is arranged on the end of the slide rail, a second elastic member is arranged on the limit block, one end of the second elastic member is fixed on the limit block, and the other end of the second elastic member is fixed on the second deceleration block.

8. The container hoisting device according to claim 7, characterized in that: The second deceleration block is slidably connected to the slide rail and a roller is arranged at the connection position.

Images