Self-adaptive load adjustment mechanical transmission device

Abstract

The invention belongs to the technical field of mechanical transmission devices, and particularly relates to a self-adaptive load adjustment mechanical transmission device which comprises mounting plates, and butt joint plates for fixing the two mounting plates together are mounted on one sides of the upper ends and the lower ends of the two mounting plates respectively. At the moment, the objective table inclines towards one side. After the objective table inclines, the back plate is pulled to incline towards one side through the connecting strip, and when the back plate inclines towards one side, the load adjusting mechanism is driven to incline towards one side. When the load adjusting mechanism inclines towards one side, a clamping plate in the load adjusting mechanism is driven to be clamped with a corresponding clamping opening in the guide rod, and therefore the objective table cannot normally move upwards due to a mutual clamping structure between the load adjusting mechanism and the guide rod. In this way, in actual use, the structure can automatically drive the load adjusting mechanism to conduct position adjusting and limiting according to the load condition, and therefore excessive friction caused by continuous work of the objective table in the overload inclined state to a transmission part of the device is prevented.

Description

Technical Field

[0001] This invention belongs to the technical field of mechanical transmission devices, specifically relating to a mechanical transmission device with adaptive load adjustment. Background Technology

[0002] Mechanical transmission devices are core components in modern industrial manufacturing systems. In particular, transmission devices for conveying workpieces up and down have significantly reduced the labor costs of material handling and greatly improved the convenience and efficiency of the production process by automating lifting and transfer functions. They have been widely used in various industrial scenarios such as warehousing and sorting, production line material flow, and heavy equipment assembly.

[0003] In the design of this type of vertical transmission device, the platform and the device frame must rely on a slide rail mechanism to achieve precise guidance and motion restriction, ensuring that the platform rises and falls smoothly along a fixed trajectory. One of the core design requirements of the slide rail mechanism is to ensure smooth sliding. Therefore, reasonable assembly gaps must be reserved between sliding components such as guide rails and sliders, rollers and slides. These gaps are key to avoiding jamming between components and reducing resistance during normal operation.

[0004] In actual industrial production, some operators, in pursuit of efficiency in a single operation, often deliberately increase the lifting weight of the platform, sometimes exceeding the rated load capacity of the equipment. This overloading directly leads to an imbalance of forces on the platform, causing it to tilt significantly to one side. This tilting force is quickly transmitted to the slide rail mechanism, disrupting the original uniform force distribution between components and causing localized squeezing contact in the sliding mechanism. This eliminates the originally designed clearances, transforming normal surface or rolling contact between components into localized hard contact. During subsequent lifting and lowering of the platform, the sliding mechanism under this squeezing condition generates excessive friction far exceeding design standards. Prolonged operation under these conditions will rapidly decrease the precision of the slide rail mechanism, eventually leading to serious damage such as jamming, seizure, or even breakage, increasing equipment maintenance costs and posing safety hazards. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive load-adjustable mechanical transmission device, aiming to solve the problem that the tilting force is rapidly transmitted to the slide rail mechanism, disrupting the original uniform force state between components and causing localized squeezing contact in the sliding mechanism. This squeezing eliminates the originally reserved reasonable gap, changing the normal surface or rolling contact between components into localized hard contact. When the platform subsequently moves up and down, the sliding mechanism under this squeezing state will generate excessive friction far exceeding design standards. Prolonged operation under this condition will rapidly decrease the accuracy of the slide rail mechanism, eventually leading to serious damage such as jamming, seizure, or even breakage, increasing equipment maintenance costs and safety hazards.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an adaptive load adjustment mechanical transmission device, comprising a mounting plate, a docking plate that fixes the two mounting plates together is respectively mounted on one side of the upper and lower ends of the two mounting plates, an output motor is mounted on one side of the lower docking plate, one end of the output motor is docked with a synchronous disk on the docking plate, and a synchronous belt for synchronous drive is installed between the synchronous disks on the two docking plates. A limit sensor is installed on the inner wall of each of the upper and lower ends of the two mounting plates. The slide rail on one side of the two mounting plates slides and docks with one side of the platform. Two sets of connecting strips are symmetrically installed on one side of the platform. The other ends of the two sets of connecting strips dock with the outer walls of both sides of the back plate. A load adjustment mechanism is installed on the outer wall of the back plate facing the platform. A guide rod moves through the inside of the load adjustment mechanism. The upper and lower ends of the guide rod dock with a docking plate, respectively.

[0007] In order to ensure that the stage can stop in time when it moves to its maximum stroke, as an adaptive load adjustment mechanical transmission device of the present invention, preferably, one side of the connecting bar is arranged opposite to the detection end of the corresponding limit sensor, and the guide rod is located at the longitudinal center line of the docking plate. A sliding groove is provided through one side of the guide rod, and a set of bayonets are provided at equal intervals on the other side of the guide rod.

[0008] In order to cause the load adjustment mechanism to tilt to one side when the platform is overloaded, as a mechanical transmission device for adaptive load adjustment of the present invention, preferably, the load adjustment mechanism includes a first C-shaped sleeve and a second C-shaped sleeve, the open ends of the first C-shaped sleeve and the second C-shaped sleeve are locked together by bolts, and a set of clamping plates are equally spaced on the inner wall of the center end of the first C-shaped sleeve. The spacing between two adjacent card plates is the same as the spacing between two adjacent card slots. The size of the card plate is adapted to the internal size of the card slot. The card plate and the card slot do not contact each other in the initial position.

[0009] In order to ensure that the relative movement between the guide rod and the load adjustment mechanism is very stable, as an adaptive load adjustment mechanical transmission device of the present invention, preferably, two sets of rubber columns are symmetrically installed on the inner wall of the first C-shaped sleeve on both sides of the card plate, and a guide head is glued to one end of the rubber column, and one side of the guide head is movably connected to the outer wall of the guide rod. One side of the rubber column is connected to the outer wall of one side of the spring piece, and the two ends of the opening of the spring piece are installed on the inner wall of the first C-shaped sleeve.

[0010] In order to ensure that the guide bar and the guide rod can still be connected through the shrinking column when the load adjustment mechanism is tilted to one side, as an adaptive load adjustment mechanical transmission device of the present invention, preferably, the center end of the second C-shaped sleeve is provided with a recessed inner cavity, and a set of shrinking columns are installed at equal intervals inside the inner cavity; One end of the shrinkage column is inserted into the inside of one side of the guide strip, and the docking end of the guide strip and the shrinkage column is movably disposed inside the inner cavity. The outer wall of one side of the guide strip is slidably docked with the inside of the groove.

[0011] Compared with the prior art, the beneficial effects of the present invention are: When the platform is overloaded, it will tilt to one side. This tilting will cause the connecting strip to pull the back plate to tilt to one side, which in turn will cause the load adjustment mechanism to tilt to one side. The load adjustment mechanism's tilting will cause its internal locking plate to engage with the corresponding locking slot on the guide rod. This interlocking structure between the load adjustment mechanism and the guide rod prevents the platform from moving upwards normally. Therefore, in actual use, this structure can automatically adjust and limit the position of the load adjustment mechanism according to the load, thus preventing excessive friction in the transmission parts of the device caused by continuous operation under overload and tilted conditions. When the load adjustment mechanism tilts to one side, the retraction column will also tilt to one side. This will increase the distance between the retraction column and the guide rod. At this time, the retraction column itself will return to its original position due to the properties of its rubber material. This will compensate for the difference caused by tilting, thus ensuring that the retraction column can still maintain its restraining effect on the guide rod after tilting. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall assembled rear view structure provided in an embodiment of this application.

[0013] Figure 2 This is a schematic diagram of the overall assembly front structure provided for an embodiment of this application.

[0014] Figure 3 This is a schematic diagram of the installation structure of the load adjustment mechanism provided in the embodiments of this application.

[0015] Figure 4 This is a schematic diagram of the load adjustment mechanism and guide rod docking end structure provided in the embodiments of this application.

[0016] Figure 5This is a schematic diagram of the structure of the guide rod provided in the first C-type sleeve according to an embodiment of this application.

[0017] Figure 6 This is a side view of the first C-type sleeve structure provided in an embodiment of this application.

[0018] Figure 7 A schematic diagram showing partial details of the first C-type sleeve provided in an embodiment of this application.

[0019] Figure 8 This is a side view sectional structural diagram of the second C-type sleeve provided in an embodiment of this application.

[0020] Figure 9 This is a schematic diagram of a partial structure of the guide rod provided in an embodiment of this application.

[0021] In the diagram: 1. Mounting plate; 2. Docking plate; 3. Output motor; 4. Limit sensor; 5. Stage; 6. Connecting strip; 7. Back plate; 8. Load adjustment mechanism; 81. First C-shaped sleeve; 811. Clamping plate; 812. Rubber column; 813. Guide head; 814. Spring piece; 82. Second C-shaped sleeve; 821. Inner cavity; 822. Retraction column; 823. Guide strip; 9. Guide rod; 91. Slide groove; 92. Bayonet. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1-9 The present invention provides the following technical solution: an adaptive load adjustment mechanical transmission device, including a mounting plate 1, a docking plate 2 that fixes the two mounting plates 1 together is respectively installed on one side of the upper and lower ends, an output motor 3 is installed on one side of the lower docking plate 2, one end of the output motor 3 is docked with the synchronous disk on the docking plate 2, and a synchronous belt for synchronous drive is installed between the synchronous disks on the two docking plates 2. In this design, the output motor 3 is a stepper motor, and it is used in conjunction with a microcontroller to control the forward and reverse rotation of the output motor 3 via pulse signals. In this way, the output motor 3 can drive the platform 5 to move up and down reciprocally through the cooperation between the synchronous pulley and the synchronous belt, with one side of the platform 5 clamped and connected to one side of the synchronous belt.

[0024] A limit sensor 4 is installed on the inner wall of the upper and lower ends of the two mounting plates 1 respectively. The slide rail on one side of the two mounting plates 1 slides and connects with one side of the platform 5. Two sets of connecting strips 6 are symmetrically installed on one side of the platform 5. The other ends of the two sets of connecting strips 6 connect with the outer walls of both sides of the back plate 7. A load adjustment mechanism 8 is installed on the outer wall of the side of the back plate 7 facing the platform 5. A guide rod 9 moves through the inside of the load adjustment mechanism 8. The upper and lower ends of the guide rod 9 are respectively connected to a docking plate 2.

[0025] Preferably, one side of the connecting strip 6 is positioned opposite to the detection end of the corresponding limit sensor 4, and the guide rod 9 is located at the longitudinal center line of the docking plate 2; A groove 91 is provided through one side of the guide rod 9, and a set of bayonets 92 are provided at equal intervals on the other side of the guide rod 9.

[0026] In practical use, the limit sensor 4 is connected to the microcontroller on the output motor 3. When the connecting bar 6 moves to its maximum stroke along with the stage 5, the limit sensor 4 will trigger a collision signal, which will cut off the power to the output motor 3. Preferably, the load adjustment mechanism 8 includes a first C-shaped sleeve 81 and a second C-shaped sleeve 82. The open ends of the first C-shaped sleeve 81 and the second C-shaped sleeve 82 are locked together by bolts. A set of clamping plates 811 are provided at equal intervals on the inner wall of the center end of the first C-shaped sleeve 81. The spacing between two adjacent card plates 811 is the same as the spacing between two adjacent slots 92. The size of the card plate 811 is adapted to the internal size of the slot 92. The card plate 811 and the slot 92 do not contact each other in the initial position.

[0027] In practical use, when the load adjustment mechanism 8 tilts, it will cause the first C-shaped sleeve 81 to tilt to one side. The first C-shaped sleeve 81 will then cause the clamping plate 811 to tilt to one side. When the clamping plate 811 contacts the outer wall of the guide rod 9, the output of the output motor 3 will drive the load adjustment mechanism 8 to move continuously, eventually causing the clamping plate 811 to engage with the corresponding latch 92 of the guide rod 9. In this way, the overloaded and tilted platform 5 will be unable to move further, and the operator can then manually cut off the power to the output motor 3.

[0028] Preferably, two sets of rubber columns 812 are symmetrically installed on the inner wall of the first C-shaped sleeve 81 on both sides of the card plate 811. A guide head 813 is glued to one end of the rubber column 812, and one side of the guide head 813 is movably connected to the outer wall of the guide rod 9. One side of the rubber column 812 is connected to the outer wall of one side of the spring piece 814, and the two ends of the opening of the spring piece 814 are installed on the inner wall of the first C-shaped sleeve 81.

[0029] In practical use, when the load adjustment mechanism 8 moves normally along the outer wall of the guide rod 9, the rubber column 812 on the inner wall of the first C-shaped sleeve 81 will, under the action of the spring piece 814, drive the guide head 813 at one end to slightly abut against the outer wall of the guide rod 9. In this way, the rubber column 812 and the guide head 813 will fill the gap between the load adjustment mechanism 8 and the guide rod 9, thereby improving the stability of the load adjustment mechanism 8 when moving on the outer wall of the guide rod 9.

[0030] Preferably, the center end of the second C-shaped sleeve 82 is provided with a recessed inner cavity 821, and a set of contraction columns 822 are installed at equal intervals inside the inner cavity 821; One end of the shrinkage column 822 is inserted into the inside of one side of the guide bar 823. The docking end of the guide bar 823 and the shrinkage column 822 is movably disposed inside the inner cavity 821. The outer wall of one side of the guide bar 823 is slidably docked with the inside of the slide groove 91.

[0031] In practical use, when the load adjustment mechanism 8 tilts to one side, the second C-shaped sleeve 82 will tilt away from the guide rod 9, increasing the distance between the second C-shaped sleeve 82 and the guide rod 9. The contraction column 822 inside the second C-shaped sleeve 82 will gradually lose its normal pressure, causing the rubber contraction column 822 to reset, thus pushing the guide strip 823 outward from the inner cavity 821. This ensures that the second C-shaped sleeve 82 and the guide rod 9 maintain their mating structure even when tilted. The tilt state in this solution is a non-amplitude tilt state, which is based on the normal adaptation distance difference between the sliding mechanisms. Working principle: When the material on the platform 5 is excessive, the platform 5 will tilt to one side. After the platform 5 tilts, the connecting strip 6 will pull the back plate 7 to one side, and the tilting of the back plate 7 will cause the load adjustment mechanism 8 to tilt to one side. When the load adjustment mechanism 8 tilts to one side, it will cause the internal locking plate 811 to engage with the corresponding locking slot 92 on the guide rod 9. In this way, the platform 5 will be unable to move upward normally due to the interlocking structure between the load adjustment mechanism 8 and the guide rod 9. Thus, in actual use, this structure can automatically adjust and limit the position of the load adjustment mechanism 8 according to the load, thereby preventing the platform 5 from working continuously under overload and tilted conditions and causing excessive friction to the transmission parts of the device. When the load adjustment mechanism 8 tilts to one side, the contraction column 822 will also tilt to one side. This will increase the distance between the contraction column 822 and the guide rod 9. At this time, the contraction column 822 will return to its original position due to the properties of its rubber material. This will compensate for the difference caused by the tilt, thus ensuring that the contraction column 822 can still maintain its constraint effect on the guide rod 9 after tilting.

[0032] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mechanical transmission device with adaptive load adjustment, comprising a mounting plate (1), characterized in that, A docking plate (2) is installed on one side of the upper and lower ends of the two mounting plates (1) respectively to fix the two together. An output motor (3) is installed on one side of the lower docking plate (2). One end of the output motor (3) is connected to the synchronous disk on the docking plate (2). A synchronous belt for synchronous drive is installed between the synchronous disks on the two docking plates (2). A limit sensor (4) is installed on the inner wall of the upper and lower ends of the two mounting plates (1). The slide rail on one side of the two mounting plates (1) slides and connects with one side of the platform (5). Two sets of connecting strips (6) are symmetrically installed on one side of the platform (5). The other end of the two sets of connecting strips (6) connects with the outer walls of both sides of the back plate (7). A load adjustment mechanism (8) is installed on the outer wall of the side of the back plate (7) facing the platform (5). A guide rod (9) moves through the inside of the load adjustment mechanism (8). The upper and lower ends of the guide rod (9) are respectively connected to a docking plate (2).

2. The adaptive load-adjusting mechanical transmission device according to claim 1, characterized in that: One side of the connecting strip (6) is positioned opposite to the detection end of the corresponding limit sensor (4), and the guide rod (9) is located at the longitudinal center line of the docking plate (2).

3. The adaptive load-adjusting mechanical transmission device according to claim 1, characterized in that: A groove (91) is provided through one side of the guide rod (9), and a set of slots (92) are provided at equal intervals on the other side of the guide rod (9).

4. The adaptive load-adjusting mechanical transmission device according to claim 1, characterized in that: The load adjustment mechanism (8) includes a first C-shaped sleeve (81) and a second C-shaped sleeve (82). The open ends of the first C-shaped sleeve (81) and the second C-shaped sleeve (82) are locked together by bolts. A set of clamping plates (811) are provided at equal intervals on the inner wall of the center end of the first C-shaped sleeve (81).

5. The adaptive load-adjusting mechanical transmission device according to claim 4, characterized in that: The spacing between two adjacent card plates (811) is the same as the spacing between two adjacent slots (92). The size of the card plate (811) is adapted to the internal size of the slot (92). The card plate (811) and the slot (92) do not contact each other in the initial position.

6. The adaptive load-adjusting mechanical transmission device according to claim 4, characterized in that: Two sets of rubber columns (812) are symmetrically installed on the inner walls of the first C-shaped sleeves (81) on both sides of the card plate (811). A guide head (813) is glued to one end of the rubber column (812), and one side of the guide head (813) is movably connected to the outer wall of the guide rod (9).

7. The adaptive load-adjusting mechanical transmission device according to claim 6, characterized in that: One side of the rubber column (812) is connected to the outer wall of one side of the spring piece (814), and the two ends of the opening of the spring piece (814) are installed on the inner wall of the first C-shaped sleeve (81).

8. The adaptive load-adjusting mechanical transmission device according to claim 4, characterized in that: The second C-type sleeve (82) has a recessed inner cavity (821) at its center end, and a set of contraction columns (822) are installed at equal intervals inside the inner cavity (821).

9. The adaptive load-adjusting mechanical transmission device according to claim 8, characterized in that: One end of the contraction column (822) is inserted into the interior of one side of the guide strip (823), and the mating ends of the guide strip (823) and the contraction column (822) are movably disposed inside the inner cavity (821).

10. The adaptive load-adjusting mechanical transmission device according to claim 9, characterized in that: The outer wall of one side of the guide bar (823) slides into contact with the inside of the groove (91).

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