Gear and rack type lifting platform
By designing multiple sets of lifting mechanisms, connecting plates and drag chains on the rack-and-pin lifting platform, the unstable and safety hazards of cargo lifting caused by rack-and-rack teeth are solved, and higher load-bearing capacity and stability are achieved, and safety risks are reduced.
Patent Information
- Application Number
- CN202323601119.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2033-12-28
AI Technical Summary
During long-term use, rack-and-rack lifting platform will cause rack teeth to break due to excessive cargo load, affecting the stability of cargo lifting and lowering, increasing the risk of cargo falling off, and posing huge safety hazards.
A rack and rack lifting platform is designed, adopting multiple sets of lifting mechanisms, connecting plates and drag chains, providing multiple support points to improve the bearing capacity and stability of the platform. The drag chain reduces the impact on the transmission when a single rack breaks, and the connecting plate connects the adjacent lifting carrier plates to form a whole, ensuring the stable operation of lifting and lowering.
Through the installation of multiple sets of lifting mechanisms and drag chains, the stability and safety of goods during the lifting process are improved, the impact of single rack breaking on the transmission is reduced, and the service life of the platform is extended.
Smart Images
Figure CN222574192U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of rack and pinion lifting, and in particular to a rack and pinion lifting platform. Background Art
[0002] The exploration and development of offshore oil and gas is basically based on offshore platforms, among which self-elevating offshore platforms are a commonly used type. They play a very important role in the fields of oil and gas development, offshore construction, wind power installation, etc. The lifting structure of the self-elevating offshore platform includes a rack and pinion lifting mechanism.
[0003] According to the existing technology, during long-term use, the rack of the gear rack lifting platform may break due to bearing too heavy cargo load. Once the tooth breaks, the continuity and stability of the rack are destroyed, causing the cargo to lose stable support during the lifting process, increasing the risk of cargo falling off. This situation will not only damage the cargo, but may also cause serious harm to the operator and the surrounding environment, posing a huge safety hazard, so it needs to be improved. Utility Model Content
[0004] In order to solve the problem that broken teeth of a rack may easily affect the stability of cargo lifting, the present application provides a rack and pinion lifting platform.
[0005] The present application provides a rack and pinion lifting platform adopting the following technical solution:
[0006] A rack and pinion lifting platform, comprising a bracket, wherein a plurality of lifting mechanisms are arranged on the bracket, and the plurality of lifting mechanisms are respectively arranged on both sides of the bracket, and each of the lifting mechanisms comprises a lifting carrier plate, a fixed rack, a driving gear, a gear box and a driving member, the fixed rack is vertically arranged along the height direction of the bracket, the driving gear is meshed with the fixed rack, the driving gear is rotatably connected to the gear box, the driving member is connected to the driving gear, the gear box is slidably connected to the bracket, the gear box is connected to the lifting carrier plate, a plurality of drag chains for support are arranged on the bracket, and the plurality of drag chains correspond to the plurality of gear boxes respectively, one end of the drag chain is connected to the top of the bracket, and the other end of the drag chain is connected to the fixed plate, and the fixed plate is connected to the gear box, a connecting plate is arranged between adjacent lifting carrier plates on the same side, and the two ends of the connecting plate are respectively connected to two adjacent lifting carrier plates, and a guiding mechanism for guiding the lifting carrier plate is arranged on the bracket.
[0007] During long-term use, the rack of the gear rack lifting platform may break due to excessive cargo load. Once the teeth break, the continuity and stability of the rack are destroyed, causing the cargo to lose stable support during the lifting process, increasing the risk of cargo falling off. This situation will not only damage the cargo, but also may cause serious harm to the operator and the surrounding environment, posing a huge safety hazard. By adopting the above technical solution, several lifting mechanisms are installed on the bracket, the lifting mechanism includes a lifting carrier, a fixed rack, a driving gear, a gear box and a driving member, and the platform is installed on several lifting carriers; when the cargo needs to be lifted, the driving member works and the driving member drives the lifting platform. The moving part drives the driving gear to rotate, and the gear box moves along the length direction of the fixed rack, driving the lifting and lowering of the lifting plate. The guide mechanism guides the lifting and lowering plate, and the drag chain moves with the lifting and lowering plate. Through the settings of the lifting mechanism, the connecting plate and the drag chain, multiple sets of lifting mechanisms can provide multiple support points for the goods during the lifting process, thereby improving the carrying capacity of the platform. At the same time, the drag chain provides support and fixation for the goods during the lifting process. The drag chain can also reduce the impact of a single rack breakage on the transmission, and the connecting plate connects the adjacent lifting and lowering plates to form a whole, which can not affect the stable operation of the lifting when a single rack breaks, thereby improving the stability and safety of the entire lifting platform.
[0008] Optionally, the guide mechanism includes a guide rail, a guide block and a guide slide, the guide rail is arranged along the height direction of the bracket, the guide block is slidably connected to the guide rail, the guide block is connected to the guide slide, and the lifting plate is connected to one end of the guide slide away from the guide block.
[0009] By adopting the above technical solution, the guide mechanism includes a guide rail, a guide block and a guide slide; when the driving member drives the lifting carrier to move, the guide slide moves with the lifting carrier, and the guide slide moves along the guide rail through the guide block to provide guidance for the lifting carrier; through the setting of the guide rail, the guide block and the guide slide, the lifting carrier can be guided to ensure the smooth movement of the lifting carrier during the lifting process, prevent the carrier from shaking and deflecting, and at the same time play a supporting and fixing role to ensure the stability of the goods during the lifting process.
[0010] Optionally, both ends of the guide rail in the length direction are provided with blocks, the blocks are connected to the bracket, and the height of the blocks is higher than the height of the guide rail.
[0011] By adopting the above technical solution, the blocks are installed and fixed at both ends of the guide rail; through the setting of the blocks, the blocks can limit the moving range of the guide slide on the guide rail, prevent the guide slide from exceeding the predetermined range, and improve the stability and safety of the entire lifting platform.
[0012] Optionally, a trapezoidal reinforcement plate is provided between the lifting plate and the guide slide, one end of the trapezoidal reinforcement plate is connected to the bottom of the lifting plate, and the other end of the trapezoidal reinforcement plate is connected to the guide slide.
[0013] By adopting the above technical solution, the trapezoidal reinforcement plate is welded and fixed between the lifting plate and the guide slide; through the setting of the trapezoidal reinforcement plate, the trapezoidal reinforcement plate increases the rigidity and strength of the lifting plate, improves the carrying capacity of the lifting plate, enables the platform to withstand a larger cargo load, reduces the probability of breakage of the fixed rack, and extends the service life of the fixed rack.
[0014] Optionally, a linkage plate is provided on the gear box, one end of the linkage plate is connected to the gear box, and the other end of the linkage plate is connected to the guide slide.
[0015] By adopting the above technical solution, the linkage plate is installed and fixed on the gear box and the guide slide; through the setting of the linkage plate, the connection and stability between the two are enhanced, ensuring the stability and reliability of the entire lifting platform during operation.
[0016] Optionally, the driving component includes a servo motor, a driving pulley, a driven pulley and a belt, the driving pulley and the driven pulley are both rotatably connected to a gear box, both ends of the belt are tensioned on the driving pulley and the driven pulley respectively, the driven pulley is coaxially arranged with the driving gear, and the output end of the servo motor is connected to the driving pulley.
[0017] By adopting the above technical solution, the driving parts include a servo motor, a driving pulley, a driven pulley and a belt; when the servo motor works, the servo motor drives the driving pulley to rotate, and the driving pulley drives the driven pulley to rotate through the belt, so that the driving gear rotates, and the driving gear engages with the fixed rack; through the setting of the servo motor, the driving pulley, the driven pulley and the belt, the belt drive method realizes smooth transmission, which can ensure that the position and speed of the lifting platform during the lifting process are accurately controlled, thereby improving the transmission stability of the platform.
[0018] Optionally, the centers of the driving pulley and the driven pulley are on the same horizontal line, and the diameter of the driving pulley is smaller than the diameter of the driven pulley.
[0019] By adopting the above technical solution, the diameter of the driving pulley is smaller than the diameter of the driven pulley; by selecting the models of the driving pulley and the driven pulley, the diameter of the driving pulley is smaller, so that its linear speed is relatively low. When it drives a larger driven pulley through a belt, due to the transmission relationship of the linear speed, the rotation speed of the driven pulley will be relatively low, which can ensure that the lifting platform has a more stable speed during the lifting process and avoid sudden acceleration or deceleration.
[0020] Optionally, side walls of the driving pulley and the driven pulley are both provided with ribs for preventing the belt from falling off, and the ribs are arranged along the circumferential direction of the driving pulley or the driven pulley.
[0021] By adopting the above technical solution, the ribs are integrally formed on the driving pulley and the driven pulley; by setting the ribs, the possibility of the belt falling off during operation is reduced. Since the belt may be affected by various external forces during operation, if there is no restriction from the ribs, the belt may shift or fall off. The existence of the ribs ensures the stable operation of the belt and reduces equipment failures or accidents caused by the belt falling off.
[0022] In summary, the present application includes at least one of the following beneficial technical effects:
[0023] Through the settings of lifting mechanism, connecting plate and drag chain, multiple sets of lifting mechanism can provide multiple support points for goods during the lifting process, thereby improving the carrying capacity of the platform. At the same time, the drag chain provides support and fixation for the goods during the lifting process. The drag chain can also reduce the impact on the transmission when a single rack breaks. The connecting plate connects the adjacent lifting plates to form a whole, which can not affect the stable operation of the lifting when a single rack breaks, thereby improving the stability and safety of the entire lifting platform.
[0024] The guide rail, guide block and guide slide can provide guidance for the lifting platform, ensure the smooth movement of the lifting platform during the lifting process, prevent the platform from shaking and deflecting, and play a supporting and fixing role, ensuring the stability of the goods during the lifting process;
[0025] Through the selection of driving pulley and driven pulley models, the diameter of the driving pulley is smaller, so that its linear speed is relatively low. When it drives a larger driven pulley through a belt, due to the transmission relationship of the linear speed, the speed of the driven pulley will be relatively low, which can ensure that the lifting platform has a more stable speed during the lifting process and avoid sudden acceleration or deceleration. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a structural schematic diagram of a gear rack type lifting platform in an embodiment of the present application.
[0027] Figure 2 It is a schematic diagram used to illustrate the connection between the fixed rack and the driving gear in the embodiment of the present application.
[0028] Figure 3 It is a schematic diagram of the structure of the driving member in the embodiment of the present application.
[0029] Figure 4 It is a partially enlarged view of a rack and pinion lifting platform in an embodiment of the present application.
[0030] Explanation of the reference numerals in the accompanying drawings: 1. bracket; 2. lifting mechanism; 21. lifting carrier plate; 22. fixed rack; 23. driving gear; 24. gear box; 25. driving member; 251. servo motor; 252. driving pulley; 253. driven pulley; 254. belt; 3. drag chain; 31. fixed plate; 4. guide mechanism; 41. guide rail; 42. guide block; 43. guide slide; 5. stop block; 6. trapezoidal reinforcement plate; 7. connecting plate; 8. side guard; 9. linkage plate. Implementation
[0031] The following is combined with Figure 1-4 This application is described in further detail.
[0032] The embodiment of the present application discloses a gear rack type lifting platform. Figure 1 The rack and pinion lifting platform includes a bracket 1. In this embodiment, the bracket 1 is a gantry structure. A plurality of lifting mechanisms 2 are installed on the bracket 1. The plurality of lifting mechanisms 2 are symmetrically arranged on both sides of the bracket 1. There are multiple groups of lifting mechanisms 2. Multiple groups of lifting mechanisms 2 can provide multiple support points for the goods during the lifting process, thereby improving the carrying capacity of the platform.
[0033] Reference Figure 1 and Figure 2 Each lifting mechanism 2 includes a lifting plate 21, a fixed rack 22, a driving gear 23, a gear box 24 and a driving member 25. The fixed rack 22 is fixedly mounted on the bracket 1 by bolts. The fixed rack 22 is vertically arranged along the height direction of the bracket 1. The driving gear 23 is meshed with the fixed rack 22. The driving member 25 is connected to the driving gear 23. In this embodiment, the driving gear 23 and the driving member 25 are both mounted on the gear box 24. The gear box 24 is slidably connected to the bracket 1. The lifting plate 21 is connected to the gear box 24, and the lifting plate 21 and the gear box 24 are respectively located on both sides of the bracket 1. A guide mechanism 4 is installed on the bracket 1 to guide the lifting plate 21 to move.
[0034] Reference Figure 1 and Figure 3 The driving member 25 includes a servo motor 251, a driving pulley 252, a driven pulley 253 and a belt 254. The driving pulley 252 and the driven pulley 253 are both rotatably mounted on the gear box 24. The centers of the driving pulley 252 and the driven pulley 253 are on the same horizontal line. In this embodiment, the diameter of the driving pulley 252 is smaller than the diameter of the driven pulley 253. Both ends of the belt 254 are tensioned on the driving pulley 252 and the driven pulley 253, respectively. The servo motor 251 is mounted on the gear box 24. The servo motor 251 can realize forward and reverse rotation. The output end of the servo motor 251 is connected to the driving pulley 252, and the driven pulley 253 is coaxially mounted with the driving gear 23.
[0035] Reference Figure 1 and Figure 3 The side walls of the driving pulley 252 and the driven pulley 253 are integrally formed with a rib 8, and the rib 8 is arranged along the circumferential direction of the driving pulley 252 or the driven pulley 253 to reduce the possibility of the belt 254 falling off during operation. Since the belt 254 may be affected by various external forces during operation, if there is no restriction from the rib 8, the belt 254 may shift or fall off. The existence of the rib 8 ensures the stable operation of the belt 254 and reduces equipment failures or accidents caused by the falling off of the belt 254.
[0036] Reference Figure 1 and Figure 4 A connecting plate 7 is welded and fixed between adjacent lifting plates 21 on the same side, and the two ends of the connecting plate 7 are respectively connected to the two lifting plates 21, so that the adjacent lifting plates 21 are connected to form a whole. When a single rack breaks, it will not affect the stable operation of the lifting, thereby improving the stability and safety of the entire lifting platform.
[0037] Reference Figure 1 and Figure 4 A plurality of drag chains 3 are installed on the bracket 1. In this embodiment, the number of the drag chains 3 is consistent with the number of the lifting mechanism 2. One end of the drag chain 3 is installed on the top of the bracket 1, and a fixing plate 31 is installed on the other end of the drag chain 3. The fixing plate 31 is fixed to the gear box 24 by bolts. The drag chain 3 provides support and fixation for the goods during the lifting process. The drag chain 3 can also reduce the impact on the transmission when a single rack breaks. In this embodiment, a corresponding plate body for fixing the drag chain 3 can also be installed on the bracket 1.
[0038] Reference Figure 1 and Figure 4 The guide mechanism 4 includes a guide rail 41, a guide block 42 and a guide slide 43. The guide rail 41 is fixedly installed on the bracket 1 by bolts. The guide rail 41 is arranged along the height direction of the bracket 1. The guide block 42 is slidably connected to the guide rail 41. The end of the guide block 42 away from the guide rail 41 is fixed on the guide slide 43. In this embodiment, the number of guide rails 41 on each lifting mechanism 2 is two groups. The lifting carrier 21 is installed and fixed on the guide slide 43. A linkage plate 9 is welded and fixed on the gear box 24, and the linkage plate 9 is connected to the guide slide 43. In this embodiment, a slot for the linkage plate 9 to move is opened on the bracket 1 to provide guidance for the lifting carrier 21, ensure the smooth movement of the lifting carrier 21 during the lifting process, prevent the carrier from shaking and deflecting, and at the same time play a supporting and fixing role to ensure the stability of the goods during the lifting process.
[0039] Reference Figure 1 and Figure 4A stopper 5 is installed at both ends of each guide rail 41 in the length direction. The stopper 5 is welded and fixed on the bracket 1. The height of the stopper 5 is higher than the height of the guide rail 41. The stopper 5 can limit the moving range of the guide slide 43 on the guide rail 41, preventing the guide slide 43 from exceeding the predetermined range, thereby improving the stability and safety of the entire lifting platform.
[0040] Reference Figure 1 and Figure 4 A trapezoidal reinforcing plate 6 is welded and fixed between the lifting platform 21 and the guide slide 43. In this embodiment, there are multiple groups of trapezoidal reinforcing plates 6 at the bottom of the lifting platform 21. The trapezoidal reinforcing plates 6 increase the rigidity and strength of the lifting platform 21, improve the carrying capacity of the lifting platform 21, enable the platform to withstand a larger cargo load, reduce the probability of breakage of the fixed rack 22, and extend the service life of the fixed rack 22.
[0041] The implementation principle of a gear rack lifting platform in the embodiment of the present application is as follows: when it is necessary to lift goods, multiple groups of servo motors 251 act synchronously, the servo motor 251 drives the active pulley 252 to rotate, the active pulley 252 drives the driven pulley 253 to rotate simultaneously through the belt 254, so that the driving gear 23 rotates, the driving gear 23 meshes with the fixed rack 22, the gear box 24 moves along the length direction of the fixed rack 22, and drives the lifting plate 21 to lift and lower, the guide slide 43 moves with the lifting plate 21, and the guide slide 43 moves along the guide track 41 through the guide block 42, so as to lift and lower the goods. The plate 21 provides guidance, and the drag chain 3 moves with the lifting plate 21 to realize the lifting and lowering operation of the goods; through the settings of the lifting mechanism 2, the connecting plate 7 and the drag chain 3, multiple sets of lifting mechanisms 2 can provide multiple support points for the goods in the lifting process, thereby improving the carrying capacity of the platform. At the same time, the drag chain 3 provides support and fixation for the goods in the lifting process. The drag chain 3 can also reduce the impact of a single rack breakage on the transmission, and the connecting plate 7 connects the adjacent lifting plates 21 to form a whole, which can not affect the stable operation of the lifting when a single rack breaks, thereby improving the stability and safety of the entire lifting platform.
[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A rack and pinion lifting platform, characterized in that: The invention comprises a support (1), wherein the support (1) is provided with a plurality of lifting mechanisms (2), wherein the plurality of lifting mechanisms (2) are respectively arranged on both sides of the support (1), and each of the lifting mechanisms (2) comprises a lifting carrier plate (21), a fixed rack (22), a driving gear (23), a gear box (24) and a driving member (25), wherein the fixed rack (22) is vertically arranged along the height direction of the support (1), the driving gear (23) is meshed with the fixed rack (22), the driving gear (23) is rotatably connected to the gear box (24), the driving member (25) is connected to the driving gear (23), and the gear box (24) is slidably connected to the support (1). The gear box (24) is connected to the lifting plate (21), and a plurality of drag chains (3) for supporting are arranged on the bracket (1), and the plurality of drag chains (3) respectively correspond to the plurality of gear boxes (24), one end of the drag chain (3) is connected to the top of the bracket (1), and the other end of the drag chain (3) is connected to a fixed plate (31), and the fixed plate (31) is connected to the gear box (24), and a connecting plate (7) is arranged between adjacent lifting plates (21) on the same side, and the two ends of the connecting plate (7) are respectively connected to two adjacent lifting plates (21), and a guiding mechanism (4) for guiding the lifting plate (21) is arranged on the bracket (1).
2. The rack and pinion lifting platform according to claim 1, characterized in that: The guide mechanism (4) comprises a guide rail (41), a guide block (42) and a guide slide (43); the guide rail (41) is arranged along the height direction of the bracket (1); the guide block (42) is slidably connected to the guide rail (41); the guide block (42) is connected to the guide slide (43); and the lifting plate (21) is connected to an end of the guide slide (43) away from the guide block (42).
3. The rack and pinion lifting platform according to claim 2, characterized in that: Both ends of the guide rail (41) in the length direction are provided with stoppers (5), the stoppers (5) are connected to the bracket (1), and the height of the stoppers (5) is higher than the height of the guide rail (41).
4. The rack and pinion lifting platform according to claim 2, characterized in that: A trapezoidal reinforcing plate (6) is provided between the lifting plate (21) and the guide slide (43), one end of the trapezoidal reinforcing plate (6) is connected to the bottom of the lifting plate (21), and the other end of the trapezoidal reinforcing plate (6) is connected to the guide slide (43).
5. The rack and pinion lifting platform according to claim 2, characterized in that: The gear box (24) is provided with a linkage plate (9), one end of the linkage plate (9) is connected to the gear box (24), and the other end of the linkage plate (9) is connected to the guide slide seat (43).
6. The rack and pinion lifting platform according to claim 1, characterized in that: The driving member (25) comprises a servo motor (251), a driving pulley (252), a driven pulley (253) and a belt (254); the driving pulley (252) and the driven pulley (253) are both rotatably connected to the gear box (24); two ends of the belt (254) are respectively tensioned on the driving pulley (252) and the driven pulley (253); the driven pulley (253) is coaxially arranged with the driving gear (23); and the output end of the servo motor (251) is connected to the driving pulley (252).
7. The rack and pinion lifting platform according to claim 6, characterized in that: The centers of the driving pulley (252) and the driven pulley (253) are on the same horizontal line, and the diameter of the driving pulley (252) is smaller than the diameter of the driven pulley (253).
8. The rack and pinion lifting platform according to claim 6, characterized in that: The side walls of the driving pulley (252) and the driven pulley (253) are both provided with ribs (8) for preventing the belt (254) from falling off, and the ribs (8) are arranged along the circumferential direction of the driving pulley (252) or the driven pulley (253).