Supporting and positioning mechanism

Abstract

The utility model provides a supporting and positioning mechanism which comprises a plurality of supporting and positioning assemblies. Each supporting and positioning assembly comprises a fixed base fixedly arranged at the front end of the lifting platform, a positioning piece penetrating through the fixed base in a front-back sliding mode, a guiding piece connected with the fixed base in a front-back sliding mode, a movable base located on the rear side of the fixed base and connected with the positioning piece and the guiding piece, and a driving device with the two ends movably connected with the movable base and the lifting platform correspondingly. The driving device is used for driving the movable base to move front and back and driving the positioning pieces and the guiding pieces to slide front and back. After the front end of the lifting platform is in butt joint with the rear end of the carriage, the positioning pieces slide forwards to the front ends, stretch out of the front side of the fixing base and are inserted into the positioning slots to limit the height reduction of the carriage. The multiple positioning pieces are used for supporting and positioning the upper and lower limiting positions of the rear end of the carriage, the rear end of the carriage is prevented from sinking excessively, it is guaranteed that the front end of the lifting platform and the rear end of the carriage are in a basically flush butt joint state all the time, and loading stability is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of support and positioning mechanisms, specifically to a support and positioning mechanism. Background Technology

[0002] The existing loading system is equipped with lifting platforms, traverse conveyors, chain conveyors, and other equipment to transport goods to the rear of the container. At this point, the lifting platform and the bottom of the container are connected, and then a handling robot moves back and forth between the lifting platform and the container to pick up the goods and transport them into the container, thereby achieving rapid loading of goods.

[0003] However, as the container loading process progresses, the increased weight of the container causes the compressed leaf springs to compress and sink until the bottom of the container is lower than the lifting platform, creating an inclined connection. When the handling robot moves goods from the lifting platform into the container, it moves downwards due to this tilt, with its forks and the goods pressing directly against the container floor, preventing normal movement. This hinders the smooth movement of the handling robot between the lifting platform and the container, thus affecting the smooth loading of goods. To address this, existing technologies often use support mechanisms to support the bottom of the container to prevent it from sinking during loading. However, for some container trucks with complex operating conditions, there is no space at the bottom to install such support mechanisms.

[0004] Therefore, the research objective of this utility model is to design a support and positioning mechanism that can support multiple types of containers, addressing the problems existing in the prior art. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention provides a support and positioning mechanism that can effectively solve the problems existing in the prior art.

[0006] The technical solution of this utility model is:

[0007] A support and positioning mechanism is applied to a lifting platform that docks at the front end with the rear end of a corresponding carriage. The rear end of the carriage is provided with several positioning slots. The support and positioning mechanism includes:

[0008] Several sets of support and positioning components are provided. Each set of support and positioning components includes a fixed base fixed to the front end of the lifting platform, a positioning component that slides through the fixed base, a guide component that slides through the fixed base, a movable base located at the rear of the fixed base and connecting the positioning component and the guide component, and a drive device that is movably connected at both ends to the movable base and the lifting platform, respectively. The positioning components correspond to the positioning slots. The drive device is used to drive the movable base to move back and forth and drive the positioning component and the guide component to slide back and forth. When the front end of the lifting platform is connected to the rear end of the carriage, the positioning components are used to slide forward until the front end extends out of the front side of the fixed base and is inserted into the positioning slots to limit the descent of the carriage height.

[0009] Furthermore, the side plates on the left and right sides of the front end of the lifting platform are horizontally and vertically fixed with support seats on opposite sides. The top of the front end of the lifting platform is rotatably provided with a cover plate for mounting on the floor of the carriage. The top of the two support seats is vertically fixed with several support blocks spaced apart front and back and fixedly connected to the corresponding side plates. There are two sets of support positioning components, which are symmetrically located between the cover plate and the two support seats. The far ends of the two fixed seats are respectively fixed on the corresponding several support blocks. The two positioning components are respectively located above the corresponding several support blocks. There are two positioning slots, which are respectively located at the left and right corners of the lower rear end of the carriage.

[0010] Furthermore, a reinforcing sleeve is fixedly provided at the front end of the fixed seat, and the positioning member slides through the reinforcing sleeve. The positioning member is cylindrical and has a plug-in part at the front end. The end of the plug-in part is contracted to form a guide part with a gradually decreasing outer diameter from back to front. When the front end of the lifting platform is connected to the rear end of the carriage, the two reinforcing sleeves correspond to the two positioning slots. The positioning member is used to slide forward until the plug-in part extends out of the reinforcing sleeve and is inserted into the positioning slot.

[0011] Furthermore, the positioning slot is designed in the shape of a racetrack, and the left and right sidewalls of the plug portion converge towards each other to form a vertical limiting surface with a spacing between them that matches the width of the positioning slot. The vertical width of the positioning slot is greater than the vertical thickness of the plug portion.

[0012] Furthermore, the proximal ends of the two fixed seats extend toward each other and are suspended in the air. The two guide members are columnar and slide back and forth through the proximal ends of the two fixed seats respectively. A detection device is installed at the bottom of the proximal ends of the two fixed seats. The detection device includes two detection heads distributed back and forth for detecting the position of the movable seat.

[0013] Furthermore, several first oil-free bushings and several second oil-free bushings extending forward and backward are respectively fitted into the far and near ends of the two fixed seats. The front end of the first oil-free bushing on the front side is fitted through the reinforcing sleeve. The positioning member is slidably fitted into several first oil-free bushings, and the guide member is slidably fitted into several second oil-free bushings.

[0014] Furthermore, the length of the guide member is less than the length of the positioning member. When the positioning member slides forward until the insertion part extends out of the reinforcing sleeve, the front end of the guide member is exposed on the front side of the fixed seat. The driving device is a telescopic cylinder with its front and rear ends respectively horizontally hinged to the middle of the rear end of the lifting platform and the movable seat.

[0015] Therefore, the beneficial effects of this utility model are:

[0016] 1. By adding several sets of support and positioning components to the lifting platform, after the front end of the lifting platform connects to the rear end of the carriage, several positioning components can slide forward until their front ends extend out of the fixed seat and are inserted into several positioning slots to limit the descent of the carriage. Thus, during the loading process, the positioning components provide upper and lower limit support and positioning for the rear end of the carriage, preventing excessive descent and ensuring that the front end of the lifting platform and the rear end of the carriage are always in a basically level docking state. This avoids the situation where the lifting platform and the carriage are tilted, which would hinder the movement of the handling robot and affect the loading of goods. This replaces the existing solution of setting a support mechanism at the bottom of the carriage and can greatly improve the adaptability of the support and positioning mechanism to different carriages. At the same time, the addition of the fixed seat can improve the stability and shear resistance of the positioning components after they are inserted into the positioning slots. The addition of guide components and movable seats can improve the stability of the positioning components' forward and backward movement and prevent the positioning components from being tilted due to excessive force when they are inserted into the positioning slots.

[0017] 2. By placing two sets of support and positioning components under the cover plate, the support and positioning components can be prevented from being crushed when the handling robot moves between the lifting platform and the carriage. The support base and side plate are fixedly welded to the bottom and side of several vertical support blocks to improve the connection strength between the support base and the side plate. By setting several support blocks at intervals, the force of the positioning component can be transmitted to the fixed base after the fixed base is installed on several support blocks, and then distributed to the support blocks and side plates through several support blocks. This reduces the probability of structural damage due to stress concentration and greatly improves the support strength of the fixed base, thereby improving the support strength of the positioning component that is slidably sleeved in the fixed base.

[0018] 3. By adding reinforcing sleeves and guide parts, when the front end of the lifting platform connects to the rear end of the carriage, the two reinforcing sleeves correspond to the two positioning slots, so that the positioning part can slide forward accurately until the insertion part protrudes from the reinforcing sleeve. The guide part is inserted into the positioning slot first, and then the insertion part is inserted into the positioning slot as a whole. This improves the accuracy of the positioning part being inserted vertically into the positioning slot and avoids the situation where the positioning part is tilted and jammed during the insertion process. At the same time, by wrapping and fixing the protruding part of the positioning part with the reinforcing sleeve, the force can be transmitted to the reinforcing sleeve and then to the fixed seat when the positioning part is under force, thereby improving the support strength of the positioning part.

[0019] 4. By setting the vertical thickness of the insertion part to be less than the vertical width of the positioning slot, the positioning component can be positioned in the middle when inserted into the positioning slot in the initial state. As loading progresses, the carriage gradually lowers its height until the top of the positioning slot descends and abuts against the top of the positioning component. Only then do the two positioning components support the rear end of the carriage and prevent it from sinking. At this time, the leaf spring is compressed, which helps the two positioning components support the entire carriage. As the load continues to increase, only the rear end of the carriage is restricted from descending by the positioning components, and the entire carriage will exhibit a slight tilt, with the front lower than the rear. At this time, the leaf spring becomes the main force-bearing component, which can significantly increase its load. The structure effectively reduces the support strength of the positioning components and improves their support effect. Therefore, the above structure can prevent the positioning components from supporting the carriage from the beginning and causing them to break as the carriage load increases. Furthermore, by fitting the left and right limiting surfaces with the inner walls of the positioning slots, the vertical movement of the positioning slots on the left and right sides is vertically limited. This ensures that after the carriage is loaded, the positioning slots on both sides of the rear end can only move up and down a short distance together to abut the positioning components. This reduces the probability of uneven loading of goods on the left and right sides of the carriage, which could cause the rear ends of the carriage to be uneven, thus further improving loading stability.

[0020] 5. By setting the first and second oil-free bushings, the smoothness of sliding of the positioning and guiding components is improved, and the support strength of the positioning components is increased. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the existing carriage and lifting platform.

[0022] Figure 2 This is a schematic diagram of a support and positioning mechanism applied to a lifting platform.

[0023] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0024] Figure 4 for Figure 2 A magnified view of a portion of point B in the middle.

[0025] Figure 5 This is a structural diagram of a set of supporting positioning components.

[0026] Figure 6 for Figure 5 A schematic diagram of the explosion structure. Detailed Implementation

[0027] To facilitate understanding by those skilled in the art, the structure of this utility model will now be described in further detail with reference to the accompanying drawings:

[0028] refer to Figure 1-6 A supporting positioning mechanism is applied to a lifting platform 8 at the rear end of a corresponding carriage 9, wherein the rear end of the carriage 9 is provided with a plurality of positioning slots 91, and the supporting positioning mechanism includes:

[0029] Several sets of support and positioning components, each set of support and positioning components includes a fixed base 1 fixed to the front end of the lifting platform 8, a positioning component 2 that slides through the fixed base 1, a guide component 3 that slides through the fixed base 1, a movable base 4 located at the rear of the fixed base 1 and connecting the positioning component 2 and the guide component 3, and a driving device 5 that is movably connected at both ends to the movable base 4 and the lifting platform 8 respectively. Several positioning components 2 correspond to several positioning slots 91 respectively. The driving device 5 is used to drive the movable base 4 to move back and forth and drive the positioning component 2 and the guide component 3 to slide back and forth.

[0030] The above-described structure, by adding several sets of support and positioning components to the lifting platform 8, allows several positioning members 2 to slide forward until their front ends extend from the front of the fixed seat 1 and are respectively inserted into several positioning slots 91, thus limiting the descent of the carriage 9. This prevents excessive descent of the rear end of the carriage 9 during the loading process, as the loading system fills the carriage 9 with goods. The positioning members 2 provide upper and lower limit support and positioning for the rear end of the carriage 9, ensuring that the front end of the lifting platform 8 and the rear end of the carriage 9 remain basically level and aligned. This design avoids the situation where the lifting platform 8 and the carriage 9 are tilted, which would hinder the movement of the handling robot and affect the loading of goods. It replaces the existing solution of setting a support mechanism at the bottom of the carriage 9, which can greatly improve the adaptability of the support positioning mechanism to different carriages 9. At the same time, by adding the fixed seat 1, the stability and shear resistance of the positioning part 2 after it is inserted into the positioning slot 91 can be improved. By adding the guide part 3 and the movable seat 4, the stability of the positioning part 2 moving back and forth can be improved, and the situation where the front end of the positioning part 2 is subjected to excessive force and tilting occurs when it is inserted into the positioning slot 91 can be avoided.

[0031] To improve the support strength of the fixed seat 1, the side plates 81 on the left and right sides of the front end of the lifting platform 8 are horizontally and vertically fixed with support seats 6. The top of the front end of the lifting platform 8 is rotatably provided with a cover plate 82 for mounting on the inner floor of the carriage 9. The top of the two support seats 6 is vertically fixed with several support blocks 7 with front-to-back spacing and fixedly connected to the corresponding side plates 81. There are two sets of support positioning components, which are symmetrically located between the cover plate 82 and the two support seats 6. The far ends of the two fixed seats 1 are respectively fixed on the corresponding several support blocks 7. The two positioning pieces 2 are respectively located above the corresponding several support blocks 7. There are two positioning slots 91, which are respectively located at the left and right corners of the lower rear end of the carriage 9. The above structure, by placing two sets of support and positioning components below the cover plate 82, can prevent the handling robot from crushing the support and positioning components when moving between the lifting platform 8 and the carriage 9. The support base 6 and the side plate 81 are fixedly welded to the bottom and side of several vertical support blocks 7 respectively, so as to improve the connection strength between the support base 6 and the side plate 81. By setting several support blocks 7 at intervals, after the fixed seat 1 is installed on several support blocks 7, the force of the positioning component 2 can be transmitted to the fixed seat 1 and then distributed to the support blocks 7 and the side plate 81 through several support blocks 7, reducing the probability of structural damage due to stress concentration, greatly improving the support strength of the fixed seat 1, and thus the support strength of the positioning component 2 that is slidably sleeved in the fixed seat 1.

[0032] To improve the support strength of the positioning component 2, a reinforcing sleeve 11 is fixedly provided at the front end of the fixed base 1. The positioning component 2 slides through the reinforcing sleeve 11. The positioning component 2 is cylindrical with a plug-in portion 21 at its front end. The end of the plug-in portion 21 tapers to form a guide portion 22 whose outer diameter gradually decreases from back to front. Through the addition of the reinforcing sleeve 11 and the guide portion 22, the above structure ensures that when the front end of the lifting platform 8 is connected to the rear end of the carriage 9, the two reinforcing sleeves 11 correspond to the two positioning slots 91, allowing the positioning component 2 to be accurately positioned. The insertion part 21 extends out of the reinforcing sleeve 11 and the guide part 22 is first inserted into the positioning slot 91, and then the insertion part 21 is inserted into the positioning slot 91 as a whole. This improves the accuracy of the positioning part 2 being inserted vertically into the positioning slot 91 and avoids the positioning part 2 being misaligned and jammed during the insertion process. At the same time, the reinforcing sleeve 11 wraps around and fixes the protruding part of the positioning part 2, so that when the positioning part 2 is subjected to force, the force can be transmitted to the reinforcing sleeve 11 and then to the fixing seat 1, thereby improving the support strength of the positioning part 2.

[0033] To improve the support effect of the positioning component 2, the positioning slot 91 is designed in the shape of a racetrack. The left and right side walls of the insertion part 21 converge towards each other to form a vertical limiting surface 23 with a spacing between them adapted to the width of the positioning slot 91. The vertical width of the positioning slot 91 is greater than the vertical thickness of the insertion part 21. This structure, by setting the vertical thickness of the insertion part 21 to be less than the vertical width of the positioning slot 91, allows the positioning component 2 to be positioned in the middle when inserted into the positioning slot 91 initially. As loading progresses, the carriage 9 gradually descends until the top of the positioning slot 91 lowers and abuts against the top of the positioning component 2. Only then do the two positioning components 2 support the rear end of the carriage 9 and prevent it from sinking. At this time, the leaf spring is compressed, which assists the two positioning components 2 in supporting the entire carriage 9. As the load continues to increase, only the rear end of the carriage 9 is restricted by the positioning components 2 and cannot descend further. The entire carriage 9 will exhibit a slightly tilted state, with the front lower than the rear. At this time, the leaf spring becomes the main force-bearing component. The structure significantly reduces the support strength of the positioning component 2 and improves its support effect. Therefore, the above structure can prevent the positioning component 2 from supporting the carriage 9 from the beginning and causing it to break as the load on the carriage 9 increases. Furthermore, by fitting the left and right limiting surfaces 23 with the left and right inner walls of the positioning slots 91, the vertical movement of the positioning slots 91 on the left and right sides is vertically limited. This ensures that after the carriage 9 is loaded, the positioning slots 91 on both sides of its rear end can only move up and down a short distance together to abut the positioning component 2. This reduces the probability of uneven loading of the left and right cargo inside the carriage 9, which could cause the rear ends of the carriage 9 to be uneven, further improving loading stability.

[0034] To precisely control the displacement of the positioning element 2, the proximal ends of the two fixed seats 1 extend towards each other and are suspended in the air. The two guide elements 3 are columnar and slide back and forth through the proximal ends of the two fixed seats 1. A detection device is installed at the bottom of the proximal ends of the two fixed seats 1. The detection device includes two detection heads 12 distributed back and forth for detecting the position of the movable seat 4. Specifically, the detection device is a proximity sensor. Thus, by detecting the back-and-forth movement of the movable seat 4 through the detection device, the back-and-forth movement position of the positioning element 2 can be determined and controlled.

[0035] To further enhance the support strength of the positioning component 2, several first oilless bushings 13 and several second oilless bushings 14 extending forward and backward are respectively fitted into the distal and proximal ends of the two fixed seats 1. Specifically, the oilless bushing is a high-strength brass bearing lubricated by oil grooves. This product has the functions of a traditional tin bronze bearing. Due to the use of high-strength brass ZCuZn25Al6Fe3Mn4, its HB hardness is doubled. Therefore, when using this product in low-speed applications, its lifespan can be doubled compared to ordinary bronze bushings. Moreover, it has a high bearing pressure and can be used in heavy-load applications. The front end of the first oilless bushing 13 is fitted through the reinforcing sleeve 11. The positioning component 2 is slidably fitted into several first oilless bushings 13, and the guide component 3 is slidably fitted into several second oilless bushings 14. The use of the first oil-free bushing 13 and the second oil-free bushing 14 improves the smoothness of sliding of the positioning member 2 and the guide member 3, and enhances the support strength of the positioning member 2.

[0036] To improve the stability of the drive device 5, the length of the guide member 3 is less than the length of the positioning member 2. When the positioning member 2 slides forward until the insertion part 21 extends out of the reinforcing sleeve 11, the front end of the guide member 3 is exposed to the front side of the fixed seat 1. Due to the length difference between the positioning member 2 and the guide member 3, when the drive device 5 drives the positioning member 2 and the guide member 3 to slide back and forth together through the movable seat 4, there is a slight probability of left and right deviation. Therefore, the drive device 5 is configured as a telescopic hydraulic cylinder with its front and rear ends laterally hinged to the lifting platform 8 and the middle of the rear end of the movable seat 4, respectively. This lateral hinge buffers the left and right deviation of the movable seat 4, ensuring the stability of the telescopic hydraulic cylinder driving the movable seat 4 to extend and retract back and forth and driving the positioning member 2 and the guide member 3 to slide back and forth.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A supporting positioning mechanism, applied to a lifting platform (8) at the rear end of a corresponding carriage (9), wherein the rear end of the carriage (9) is provided with a plurality of positioning slots (91), characterized in that, The supporting positioning mechanism includes: Several sets of support and positioning components, each set of support and positioning components includes a fixed seat (1) fixed to the front end of the lifting platform (8), a positioning component (2) that slides through the fixed seat (1) back and forth, a guide component (3) that slides through the fixed seat (1) back and forth, a movable seat (4) located on the rear side of the fixed seat (1) and connected to the positioning component (2) and the guide component (3), and a drive device (5) that is movably connected at both ends to the movable seat (4) and the lifting platform (8). Several positioning components (2) correspond to several positioning slots (91). The drive device (5) is used to drive the movable seat (4) to move back and forth and drive the positioning component (2) and the guide component (3) to slide back and forth. When the front end of the lifting platform (8) is connected to the rear end of the carriage (9), several positioning components (2) are used to slide forward until the front end extends out of the front side of the fixed seat (1) and is inserted into several positioning slots (91) to limit the height of the carriage (9) from falling.

2. The support and positioning mechanism as described in claim 1, characterized in that, The lifting platform (8) has support seats (6) fixed horizontally and vertically on the opposite sides of the side plates (81) on the left and right sides of the front end. The top of the front end of the lifting platform (8) is rotatably provided with a cover plate (82) for mounting on the bottom plate of the carriage (9). The top of the two support seats (6) is vertically fixed with several support blocks (7) with front and rear spacing and fixedly connected to the corresponding side plates (81). The number of the support positioning components is two sets, which are symmetrically located between the cover plate (82) and the two support seats (6). The far ends of the two fixed seats (1) are respectively fixed on the corresponding several support blocks (7). The two positioning components (2) are respectively located above the corresponding several support blocks (7). The number of the positioning slots (91) is two, which are respectively located at the left and right corners of the lower rear end of the carriage (9).

3. The support and positioning mechanism as described in claim 2, characterized in that, The front end of the fixed seat (1) is fixedly provided with a reinforcing sleeve (11), and the positioning member (2) slides through the reinforcing sleeve (11) back and forth. The positioning member (2) is cylindrical and the front end is a plug-in part (21). The end of the plug-in part (21) shrinks to form a guide part (22) whose outer diameter gradually decreases from back to front. When the front end of the lifting platform (8) is connected to the rear end of the carriage (9), the two reinforcing sleeves (11) correspond to the two positioning slots (91). The positioning member (2) is used to slide forward until the plug-in part (21) extends out of the reinforcing sleeve (11) and is inserted into the positioning slot (91).

4. A support and positioning mechanism as described in claim 3, characterized in that, The positioning slot (91) is designed in the shape of a racetrack. The left and right sidewalls of the plug-in part (21) shrink towards each other to form a vertical limiting surface (23) with a spacing between them that is adapted to the width of the positioning slot (91). The upper and lower width of the positioning slot (91) is greater than the upper and lower thickness of the plug-in part (21).

5. A support and positioning mechanism as described in claim 3, characterized in that, The two fixed seats (1) extend toward each other and are suspended in the air at their proximal ends. The two guide members (3) are columnar and slide back and forth through the proximal ends of the two fixed seats (1). A detection device is installed at the bottom of the proximal ends of the two fixed seats (1). The detection device includes two detection heads (12) for detecting the position of the movable seat (4) and are arranged back and forth.

6. A support and positioning mechanism as described in claim 5, characterized in that, The two fixed seats (1) are respectively fitted with a plurality of first oil-free bushings (13) and a plurality of second oil-free bushings (14) extending back and forth. The front end of the first oil-free bushing (13) is fitted through the reinforcing sleeve (11). The positioning member (2) is slidably fitted in the plurality of first oil-free bushings (13). The guide member (3) is slidably fitted in the plurality of second oil-free bushings (14).

7. A support and positioning mechanism as described in claim 3, characterized in that, The length of the guide (3) is less than the length of the positioning member (2). When the positioning member (2) slides forward until the insertion part (21) extends out of the reinforcing sleeve (11), the front end of the guide (3) is exposed to the front side of the fixed seat (1). The driving device (5) is a telescopic cylinder with its front and rear ends respectively horizontally hinged to the middle of the rear end of the lifting platform (8) and the movable seat (4).

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