Workshop heavy load conveying device based on screw rod transmission mechanism

Abstract

The present disclosure provides a workshop heavy load conveying device based on a lead screw transmission mechanism. The workshop heavy load conveying device based on the lead screw transmission mechanism comprises a base mechanism, a lead screw transmission mechanism and a lifting bearing platform mechanism; the base mechanism is provided with a containing cavity and a mounting groove, and the inner wall of the containing cavity is provided with a plurality of first guide sliding blocks; the base mechanism is used for rolling connection with the ground; the lead screw transmission mechanism comprises a lead screw driving assembly, a connecting lead screw and a nut connecting sliding block, the lead screw driving assembly is used for driving the connecting lead screw to rotate relative to the base mechanism; the nut connecting sliding block is provided with a connecting internal screw hole, the connecting lead screw is arranged in the connecting internal screw hole and is screwed with the nut connecting sliding block; the lifting bearing platform mechanism is arranged in the containing cavity and is connected with the base mechanism, each first guide sliding block is slidingly connected with the lifting bearing platform mechanism, and the nut connecting sliding block is connected with the lifting bearing platform mechanism. The workshop heavy load conveying device based on the lead screw transmission mechanism has good safety in use.

Description

Technical Field

[0001] This disclosure relates to the technical field of workshop conveyor systems, and in particular to a heavy-duty workshop conveyor device based on a screw drive mechanism. Background Technology

[0002] Heavy-duty conveyor systems are industrial production workshops used to carry and transfer raw materials, semi-finished products, and finished products. They are widely used in automobile manufacturing, metal processing, rail transportation, logistics centers, steel metallurgy, and aerospace industries. A heavy-duty conveyor system consists of a main body and a lifting mechanism. The lifting platform is connected to the main body and carries the materials, driving them to move vertically up and down.

[0003] In related technologies, the lifting platform structure is a multi-stage scissor lift mechanism, such as... Figure 1 As shown, the multi-stage scissor lift mechanism is composed of multiple connecting rods (i.e., scissor arms) and hinged pins. The top of the multi-stage scissor lift mechanism is equipped with a carrying platform for carrying materials. The multi-stage scissor lift mechanism realizes the vertical lifting and lowering movement of the carrying platform by expanding and retracting the multiple scissor arms, which is used to drive the materials to move vertically. Multi-stage scissor lift mechanisms consist of multiple scissor arms hinged together by pins. The vertical lifting of the platform is achieved by extending and retracting these arms. However, as the lifting height of the platform increases, the lever arm of each scissor arm lengthens, reducing the overall structural rigidity of the multi-stage scissor lift mechanism. Over time, wear gaps develop on the pins and bushings at the various connections. When the platform is raised, these minute wear gaps are amplified and compounded within the multi-stage scissor lift mechanism, resulting in significant swaying and compromised safety during heavy-duty conveying operations in workshops. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a workshop heavy-duty conveying device based on a screw drive mechanism with better safety.

[0005] The purpose of this disclosure is achieved through the following technical solution: A heavy-duty conveying device for workshops based on a screw drive mechanism includes: The base mechanism has a receiving cavity and an installation through groove. The receiving cavity is connected to the installation through groove. The inner wall of the receiving cavity is provided with a plurality of first guide sliders, which are spaced apart. The base mechanism is used for rolling connection with the ground. A lead screw drive mechanism includes a lead screw drive assembly, a connecting lead screw, and a nut connecting slider. The lead screw drive assembly is mounted on the base mechanism, and the connecting lead screw is rotatably connected to the base mechanism. The power output end of the lead screw drive assembly is connected to the connecting lead screw, and the lead screw drive assembly is used to drive the connecting lead screw to rotate relative to the base mechanism. The nut connecting slider passes through the mounting slot and is slidably connected to the base mechanism. The nut connecting slider has a connecting internal thread hole, and the connecting lead screw passes through the connecting internal thread hole and is screwed to the nut connecting slider. A lifting and bearing platform mechanism is inserted into the receiving cavity and connected to the base mechanism. Each first guide slider is slidably connected to the lifting and bearing platform mechanism. The nut connecting slider is connected to the lifting and bearing platform mechanism. The lifting and bearing platform mechanism is used to carry materials.

[0006] Compared with the prior art, this disclosure has at least the following advantages: 1. The lead screw drive assembly is used to drive the connecting lead screw to rotate relative to the base mechanism. The nut connecting slider is slidably connected to the base mechanism. The connecting lead screw passes through the connecting inner thread hole and is screwed to the nut connecting slider, so that the connecting lead screw drives the nut connecting slider to slide vertically relative to the base mechanism. The nut connecting slider is connected to the lifting bearing platform mechanism, so that the nut connecting slider drives the lifting bearing platform mechanism to slide vertically relative to the base mechanism. The lifting bearing platform mechanism is used to carry materials, so that the lifting bearing platform mechanism drives the materials to move vertically. The lifting bearing platform mechanism is connected to the base mechanism, and the base mechanism is used to roll with the ground, so that the base mechanism drives the lifting bearing platform mechanism to move relative to the ground, thereby completing the material conveying process. 2. Since the screw drive mechanism is used to drive the lifting platform mechanism to slide vertically relative to the base mechanism, the screw drive mechanism and the lifting platform mechanism together form a screw drive lifting platform structure. The screw drive lifting platform structure realizes the vertical movement of the lifting platform mechanism by connecting the slider with the nut. As the lifting height of the lifting platform mechanism increases, the overall structural stiffness of the screw drive mechanism remains unchanged, that is, the overall structural stiffness of the screw drive lifting platform structure remains unchanged. This avoids the problem of reduced overall structural stiffness of multi-stage scissor lift platform mechanisms in the prior art, making it less prone to swaying and other problems in the screw drive lifting platform structure. 3. Simultaneously, since each first guide slider is slidably connected to the lifting platform mechanism, multiple first guide sliders are spaced apart between the lifting platform mechanism and the base mechanism. Each first guide slider plays a good guiding role, so that multiple first guide sliders work together to prevent the lifting platform mechanism from experiencing positional deviation and swaying during the lifting process. This effectively ensures the lifting stability and reliability of the lifting platform mechanism during the lifting process. It solves the problem in the prior art where small wear gaps are amplified in multi-stage scissor lift mechanisms, resulting in large sway amplitudes. The multiple first guide sliders work together to reduce the sway amplitude of the lifting platform mechanism, thereby effectively reducing the risk of swaying during the lifting process. This makes the overall structure of the screw-driven lifting platform structure less prone to swaying, resulting in better safety in the use of the screw-driven lifting platform structure, and thus better safety in the use of heavy-duty conveying devices in workshops based on screw-driven mechanisms. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 The image shown is a photograph of a multi-stage scissor lift mechanism according to an embodiment of the prior art. Figure 2 This is a schematic diagram of a workshop heavy-duty conveying device based on a screw drive mechanism, according to one embodiment. Figure 3 This is a schematic diagram of another state of a workshop heavy-duty conveying device based on a screw drive mechanism, according to one embodiment. Figure 4 for Figure 2 The diagram shows the structural schematic of the base body of the heavy-duty conveyor device in the workshop based on a screw drive mechanism. Figure 5 for Figure 4 The diagram shows the structure of the screw drive mechanism in the heavy-duty conveying device for the workshop based on the screw drive mechanism. Figure 6 for Figure 4 The diagram shows the structural schematic of the steering wheel assembly of a heavy-duty conveyor device in a workshop based on a screw drive mechanism. Figure 7 for Figure 3 The diagram shows the structural schematic of the lifting and bearing platform mechanism of the heavy-duty conveying device in the workshop based on the screw drive mechanism. Figure 8 for Figure 7 A schematic diagram of the structure of the first lifting seat of the lifting platform mechanism shown; Figure 9 for Figure 7 The diagram shows the structure of the second lifting seat of the lifting platform mechanism. Figure 10 for Figure 7 A schematic diagram of the structure of the third lifting seat of the lifting platform mechanism shown; Figure 11 for Figure 7 The diagram shows the structural schematic of the lifting platform assembly of the lifting platform mechanism. Figure 12 This is a partially enlarged schematic diagram of the conditions of the first lifting drive chain in one embodiment; Figure 13 This is a partially enlarged schematic diagram of the conditions for the second lifting drive chain in one embodiment; Figure 14 This is a partially enlarged schematic diagram of the conditions for the third lifting drive chain in one embodiment; Figure 15 This is a photograph of a workshop heavy-duty conveying device based on a screw drive mechanism, according to one embodiment. Detailed Implementation

[0009] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0010] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0011] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0012] like Figures 2 to 14 As shown, an embodiment of a workshop heavy-duty conveying device 10 based on a screw drive mechanism includes a base mechanism 100, a screw drive mechanism 200, and a lifting and bearing platform mechanism 300. The base mechanism 100 has a receiving cavity 111 and an installation groove 112, the receiving cavity 111 and the installation groove 112 are connected, and a plurality of first guide sliders 1111 are provided on the inner wall of the receiving cavity 111, the plurality of first guide sliders 1111 being spaced apart; the base mechanism 100 is used for rolling connection with the ground; the screw drive mechanism 200 includes a screw drive assembly 210, a connecting screw 220 and a nut connecting slider 230, the screw drive assembly 210 is mounted on the base mechanism 100, the connecting screw 220 is rotatably connected to the base mechanism 100, and the screw drive... The power output end of component 210 is connected to the connecting screw 220. The screw drive component 210 is used to drive the connecting screw 220 to rotate relative to the base mechanism 100. The nut connecting slider 230 passes through the mounting groove 112 and is slidably connected to the base mechanism 100. The nut connecting slider 230 has a connecting internal thread hole 231. The connecting screw 220 passes through the connecting internal thread hole 231 and is screwed to the nut connecting slider 230. The lifting bearing platform mechanism 300 passes through the receiving cavity 111 and is connected to the base mechanism 100. Each first guide slider 1111 is slidably connected to the lifting bearing platform mechanism 300. The nut connecting slider 230 is connected to the lifting bearing platform mechanism 300. The lifting bearing platform mechanism 300 is used to carry materials.

[0013] In this embodiment, the lead screw drive assembly 210 drives the connecting lead screw 220 to rotate relative to the base mechanism 100. The nut connecting slider 230 is slidably connected to the base mechanism 100. The connecting lead screw 220 passes through the connecting inner threaded hole 231 and is screwed to the nut connecting slider 230, so that the connecting lead screw 220 drives the nut connecting slider 230 to slide vertically relative to the base mechanism 100. The lifting support platform mechanism 300 is connected to the base mechanism 100, and the base mechanism 100 is used for rolling connection with the ground, so that the base mechanism 100 drives the lifting support platform mechanism 300 to move relative to the ground.

[0014] The aforementioned workshop heavy-duty conveying device 10 based on a screw drive mechanism, wherein the screw drive assembly 210 is used to drive the connecting screw 220 to rotate relative to the base mechanism 100, the nut connecting slider 230 is slidably connected to the base mechanism 100, the connecting screw 220 passes through the connecting inner thread hole 231 and is screwed to the nut connecting slider 230, so that the connecting screw 220 drives the nut connecting slider 230 to slide vertically relative to the base mechanism 100, the nut connecting slider 230 is connected to the lifting bearing platform mechanism 300, so that the nut connecting slider 230 drives the lifting bearing platform mechanism 300 to slide vertically relative to the base mechanism 100, the lifting bearing platform mechanism 300 is used to carry materials, so that the lifting bearing platform mechanism 300 drives the materials to move vertically, and the lifting bearing platform mechanism 300 is connected to the base mechanism 100, the base mechanism 100 is used to roll with the ground, so that the base mechanism 100 drives the lifting bearing platform mechanism 300 to move relative to the ground, thereby completing the material conveying process; Since the screw drive mechanism 200 is used to drive the lifting platform mechanism 300 to slide vertically relative to the base mechanism 100, the screw drive mechanism 200 and the lifting platform mechanism 300 together form a screw drive lifting platform structure. The screw drive lifting platform structure realizes the vertical movement of the lifting platform mechanism 300 by connecting the slider 230 with the nut. As the lifting height of the lifting platform mechanism 300 increases, the overall structural stiffness of the screw drive mechanism 200 remains unchanged. That is, the overall structural stiffness of the screw drive lifting platform structure remains unchanged, thus avoiding the problem of reduced overall structural stiffness of multi-stage scissor lift platform mechanisms in the prior art. This makes it difficult for the screw drive lifting platform structure to wobble or other problems. Meanwhile, since each first guide slider 1111 is slidably connected to the lifting platform mechanism 300, multiple first guide sliders 1111 are spaced apart between the lifting platform mechanism 300 and the base mechanism 100. Each first guide slider 1111 plays a good guiding role, so that multiple first guide sliders 1111 work together to prevent the lifting platform mechanism 300 from shifting position and shaking during the lifting process. This effectively ensures the lifting stability and reliability of the lifting platform mechanism 300 during the lifting process. It solves the problem in the prior art where small wear gaps are amplified in multi-stage scissor lift mechanisms, resulting in large shaking amplitude of multi-stage scissor lift mechanisms. Multiple first guide sliders 1111 work together to reduce the shaking amplitude of the lifting platform mechanism 300, thereby effectively reducing the risk of shaking of the lifting platform mechanism 300 during the lifting process. This makes the overall structure of the screw drive lifting platform structure less prone to shaking, resulting in better safety in the use of the screw drive lifting platform structure. Therefore, the workshop heavy-duty conveying device 10 based on the screw drive mechanism has better safety in use.

[0015] like Figures 2 to 11 As shown, in one embodiment, the lifting platform mechanism 300 includes a first lifting drive assembly 310, a second lifting drive assembly 320, a third lifting drive assembly 330, and a platform assembly 340. The first lifting drive assembly 310 passes through the receiving cavity 111 and is connected to the base mechanism 100. Each first guide slider 1111 is slidably connected to the first lifting drive assembly 310, and a nut-connected slider 230 is connected to the first lifting drive assembly 310. The power output end of the first lifting drive assembly 310 is connected to the second lifting drive assembly 320, and the first lifting drive assembly 310 is used to drive the second lifting drive assembly 320 to slide vertically. The power output end of the second lifting drive assembly 320 is connected to the third lifting drive assembly 330, and the second lifting drive assembly 320 is used to drive the third lifting drive assembly 330 to slide vertically. The power output end of the third lifting drive assembly 330 is connected to the platform assembly 340, and the third lifting drive assembly 330 is used to drive the platform assembly 340 to slide vertically. The platform assembly 340 is used to carry materials. In this embodiment, the nut-connecting slider 230 is connected to the first lifting drive assembly 310, so that the nut-connecting slider 230 drives the first lifting drive assembly 310 to slide vertically relative to the base mechanism 100. This allows the nut-connecting slider 230 to provide stable support and guidance for the first lifting drive assembly 310, thereby ensuring that the first lifting drive assembly 310 slides smoothly and strictly in the vertical direction. This effectively reduces problems such as shaking and deviation of the first lifting drive assembly 310 during the lifting process, resulting in better operational stability of the first lifting drive assembly 310.

[0016] like Figures 7 to 8 As shown, in one embodiment, the first lifting drive assembly 310 includes a first lifting seat 311 and a plurality of first lifting drive chain conditions 312. Each first lifting drive chain condition 312 is connected to the first lifting seat 311, and the plurality of first lifting drive chain conditions 312 are arranged at intervals around the periphery of the first lifting seat 311. The first lifting seat 311 has a first lifting cavity 3111. The second lifting drive assembly 320 passes through the first lifting cavity 3111 and is slidably connected to the first lifting seat 311. The first lifting seat 311 passes through the receiving cavity 111. Each first guide slider 1111 is slidably connected to the first lifting seat 311, and the nut-connected slider 230 is connected to the first lifting seat 311. One end of each first lifting drive chain condition 312 is fixedly connected to the second lifting drive assembly 320, and the other end of each first lifting drive chain condition 312 passes through the receiving cavity 111 and is fixedly connected to the base mechanism 100. In this embodiment, the nut-connecting slider 230 is connected to the first lifting seat 311, so that the nut-connecting slider 230 drives the first lifting seat 311 to slide vertically relative to the base mechanism 100; when the nut-connecting slider 230 drives the first lifting seat 311 to slide vertically relative to the base mechanism 100, each first lifting drive chain condition 312 moves towards the base mechanism 100, so that the first lifting seat 311 is used by multiple first lifting drive chain conditions 312 to jointly drive the second lifting drive assembly 320 to slide vertically ... to drive the second lifting drive assembly 320 to slide vertically. When the slider 230 drives the first lifting seat 311 to slide down vertically relative to the base mechanism 100, each first lifting drive chain condition 312 moves toward the second lifting drive assembly 320, so that the first lifting seat 311, through multiple first lifting drive chain conditions 312, jointly drives the second lifting drive assembly 320 to slide down vertically. This enables the first lifting drive assembly 310 to drive the second lifting drive assembly 320 to slide up and down vertically, resulting in better transmission reliability between the first lifting drive assembly 310 and the second lifting drive assembly 320.

[0017] Furthermore, multiple first lifting drive chain conditions 312 are arranged at intervals around the periphery of the first lifting seat 311. One end of each first lifting drive chain condition 312 is fixedly connected to the second lifting drive assembly 320, and the other end of each first lifting drive chain condition 312 passes through the receiving cavity 111 and is fixedly connected to the base mechanism 100. This allows the power of the first lifting seat 311 to be evenly transmitted to the second lifting drive assembly 320 through the multiple first lifting drive chain conditions 312, resulting in uniform force on the second lifting drive assembly 320. This effectively ensures that the second lifting drive assembly 320 achieves synchronous lifting, thereby improving the action accuracy of the second lifting drive assembly 320 and making the operation synchronization of the second lifting drive assembly 320 better, thus suppressing the shaking of the second lifting drive assembly 320.

[0018] like Figures 7 to 9 As shown, in one embodiment, the second lifting drive assembly 320 includes a second lifting seat 321 and a plurality of second lifting drive chain conditions 322. Each second lifting drive chain condition 322 is connected to the second lifting seat 321, and the plurality of second lifting drive chain conditions 322 are spaced apart around the periphery of the second lifting seat 321. The second lifting seat 321 has a second lifting cavity 3211. The third lifting drive assembly 330 passes through the second lifting cavity 3211 and is slidably connected to the second lifting seat 321. The second lifting seat 321 passes through the first lifting cavity 3111 and is slidably connected to the first lifting seat 311. One end of each second lifting drive chain condition 322 is fixedly connected to the third lifting drive assembly 330, and the other end of each second lifting drive chain condition 322 passes through the first lifting cavity 3111 and is fixedly connected to the first lifting seat 311. In this embodiment, the first lifting drive assembly 310 is used to drive the second lifting drive assembly 320 to slide vertically. When the first lifting drive assembly 310 drives the second lifting drive assembly 320 to slide vertically upward, each second lifting drive chain condition 322 moves towards the first lifting seat 311, so that the second lifting seat 321, through multiple second lifting drive chain conditions 322, jointly drives the third lifting drive assembly 330 to slide vertically upward. When the first lifting drive assembly 310 drives the second lifting drive assembly 320 to slide vertically downward, each second lifting drive chain condition 322 moves towards the third lifting drive assembly 330, so that the second lifting seat 321, through multiple second lifting drive chain conditions 322, jointly drives the third lifting drive assembly 330 to slide vertically downward. This achieves the second lifting drive assembly 320 driving the third lifting drive assembly 330 to slide vertically, resulting in better transmission reliability between the second lifting drive assembly 320 and the third lifting drive assembly 330.

[0019] Furthermore, multiple second lifting drive chain conditions 322 are arranged at intervals around the periphery of the second lifting seat 321. One end of each second lifting drive chain condition 322 is fixedly connected to the third lifting drive assembly 330, and the other end of each second lifting drive chain condition 322 passes through the first lifting cavity 3111 and is fixedly connected to the first lifting seat 311. This allows the power of the second lifting seat 321 to be evenly transmitted to the third lifting drive assembly 330 through the multiple second lifting drive chain conditions 322, resulting in uniform force on the third lifting drive assembly 330. This effectively ensures that the third lifting drive assembly 330 achieves synchronous lifting, thereby improving the action accuracy of the third lifting drive assembly 330 and making the operation synchronization of the third lifting drive assembly 330 better, thus suppressing the shaking of the third lifting drive assembly 330.

[0020] like Figures 7 to 10 As shown, in one embodiment, the third lifting drive assembly 330 includes a third lifting seat 331 and a plurality of third lifting drive chain conditions 332. Each third lifting drive chain condition 332 is connected to the third lifting seat 331, and the plurality of third lifting drive chain conditions 332 are spaced apart around the periphery of the third lifting seat 331. The third lifting seat 331 has a third lifting cavity 3311. The bearing platform assembly 340 passes through the third lifting cavity 3311 and is slidably connected to the third lifting seat 331. The third lifting seat 331 passes through the second lifting cavity 3211 and is slidably connected to the second lifting seat 321. One end of each third lifting drive chain condition 332 is fixedly connected to the bearing platform assembly 340, and the other end of each third lifting drive chain condition 332 passes through the second lifting cavity 3211 and is fixedly connected to the second lifting seat 321. In this embodiment, the second lifting drive component 320 is used to drive the third lifting drive component 330 to slide vertically. When the second lifting drive component 320 drives the third lifting drive component 330 to slide vertically upward, each third lifting drive chain condition 332 moves towards the second lifting seat 321, so that the third lifting seat 331, through multiple third lifting drive chain conditions 332, jointly drives the bearing platform component 340 to slide vertically upward. When the second lifting drive component 320 drives the third lifting drive component 330 to slide vertically downward, each third lifting drive chain condition 332 moves towards the bearing platform component 340, so that the third lifting seat 331, through multiple third lifting drive chain conditions 332, jointly drives the bearing platform component 340 to slide vertically downward. This achieves the third lifting drive component 330 driving the bearing platform component 340 to slide vertically, resulting in better transmission reliability between the third lifting drive component 330 and the bearing platform component 340.

[0021] Furthermore, multiple third lifting drive chain conditions 332 are spaced around the periphery of the third lifting seat 331. One end of each third lifting drive chain condition 332 is fixedly connected to the bearing platform assembly 340, and the other end of each third lifting drive chain condition 332 passes through the second lifting cavity 3211 and is fixedly connected to the second lifting seat 321. This allows the power of the third lifting seat 331 to be evenly transmitted to the bearing platform assembly 340 through the multiple third lifting drive chain conditions 332, resulting in uniform force on the bearing platform assembly 340. This effectively ensures that the bearing platform assembly 340 achieves synchronous lifting, thereby improving the motion accuracy of the bearing platform assembly 340 and improving the synchronicity of the bearing platform assembly 340's operation, thus suppressing the shaking of the bearing platform assembly 340.

[0022] like Figures 7 to 12 As shown, in one embodiment, each first lifting drive chain condition 312 includes a first mounting base 3121, a first lifting transmission chain 3122, and a first sprocket body 3123. The first sprocket body 3123 is rotatably connected to the first mounting base 3121, and the first lifting transmission chain 3122 is meshed with the first sprocket body 3123. The first mounting base 3121 is connected to the first lifting base 311. One end of the first lifting transmission chain 3122 is fixedly connected to the second lifting drive assembly 320, and the other end of the first lifting transmission chain 3122 passes through the receiving cavity 111 and is fixedly connected to the base mechanism 100. In this embodiment, the first sprocket body 3123 is rotatably connected to the first mounting base 3121, allowing the first sprocket body 3123 to rotate flexibly, thereby significantly reducing the frictional resistance of the first lifting transmission chain 3122 during transmission, and thus effectively improving the power transmission efficiency of the first lifting drive chain condition 312.

[0023] like Figures 7 to 13 As shown, in one embodiment, each second lifting drive chain condition 322 includes a second mounting base 3221, a second lifting transmission chain 3222, and a second sprocket body 3223. The second sprocket body 3223 is rotatably connected to the second mounting base 3221, and the second lifting transmission chain 3222 is meshed with the second sprocket body 3223. The second mounting base 3221 is connected to the second lifting seat 321. One end of the second lifting transmission chain 3222 is fixedly connected to the third lifting drive assembly 330, and the other end of the second lifting transmission chain 3222 passes through the first lifting cavity 3111 and is fixedly connected to the first lifting seat 311. In this embodiment, the second sprocket body 3223 is rotatably connected to the second mounting base 3221, allowing the second sprocket body 3223 to rotate flexibly, thereby significantly reducing the frictional resistance of the second lifting transmission chain 3222 during transmission, and thus effectively improving the power transmission efficiency of the second lifting drive chain condition 322.

[0024] like Figures 7 to 14 As shown, in one embodiment, each third lifting drive chain condition 332 includes a third mounting base 3321, a third lifting transmission chain 3322, and a third sprocket body 3323. The third sprocket body 3323 is rotatably connected to the third mounting base 3321, and the third lifting transmission chain 3322 is meshed with the third sprocket body 3323. The third mounting base 3321 is connected to the third lifting seat 331. One end of the third lifting transmission chain 3322 is fixedly connected to the bearing platform assembly 340, and the other end of the third lifting transmission chain 3322 passes through the second lifting cavity 3211 and is fixedly connected to the second lifting seat 321. In this embodiment, the third sprocket body 3323 is rotatably connected to the third mounting base 3321, allowing the third sprocket body 3323 to rotate flexibly, thereby significantly reducing the frictional resistance of the third lifting transmission chain 3322 during transmission, and thus effectively improving the power transmission efficiency of the third lifting drive chain condition 332.

[0025] like Figures 4 to 5 As shown, in one embodiment, the lead screw drive assembly 210 includes a lead screw drive component 211 and a coupling 212 connected to each other. Both the lead screw drive component 211 and the coupling 212 are mounted on the base mechanism 100. The coupling 212 is connected to the connecting lead screw 220. The lead screw drive component 211 drives the connecting lead screw 220 to rotate relative to the base mechanism 100 through the coupling 212, so that the transmission reliability between the lead screw drive component 211 and the connecting lead screw 220 is good.

[0026] In one embodiment, the lead screw drive 211 is either a drive motor or a hydraulic cylinder. In this embodiment, when the lead screw drive 211 is a drive motor, the control precision of the lead screw drive 211 is higher; when the lead screw drive 211 is a hydraulic cylinder, the lead screw drive 211 can provide a large tonnage thrust, thereby being able to withstand a large impact load, making the workshop heavy-duty conveying device 10 based on the lead screw transmission mechanism more convenient to use.

[0027] Furthermore, when the lead screw drive 211 is a hydraulic cylinder, the lead screw drive 211 is equipped with a displacement sensor (not shown) and a hydraulic control valve (not shown). The displacement sensor is electrically connected to the control end of the hydraulic control valve. The hydraulic control valve is used to control the opening or closing of the lead screw drive 211, so that the lead screw drive 211 can be precisely controlled through the displacement sensor and the hydraulic control valve, resulting in high accuracy in the use of the lead screw drive 211.

[0028] Furthermore, such as Figures 4 to 5As shown, in one embodiment, the lead screw drive assembly 210 further includes a reducer 213, which is mounted on the base mechanism 100 and is connected to the coupling 212 and the connecting lead screw 220 respectively. In this embodiment, the reducer 213 is connected to the coupling 212 and the connecting screw 220 respectively, so that the screw drive 211 drives the connecting screw 220 to rotate relative to the base mechanism 100 through the coupling 212 and the reducer 213. That is, the power of the screw drive 211 is transmitted to the reducer 213 through the coupling 212, so that the reducer 213 drives the connecting screw 220 to rotate relative to the base mechanism 100. This causes the connecting screw 220 to drive the nut connecting slider 230 to slide up and down in the vertical direction relative to the base mechanism 100. The reducer 213 is used to output a larger torque, so that the nut connecting slider 230 can provide a larger thrust under the action of the connecting screw 220, thereby being able to withstand a larger impact load. This allows the screw drive mechanism 200 to meet the heavy load requirements, making the workshop heavy-duty conveying device 10 based on the screw drive mechanism more convenient to use.

[0029] Furthermore, such as Figures 2 to 3 As shown, in one embodiment, the support platform assembly 340 is provided with a plurality of laser rangefinders 341. The plurality of laser rangefinders 341 are arranged at intervals around the outer periphery of the support platform assembly 340. Each laser rangefinder 341 is electrically connected to the control end of the lead screw drive 211. Each laser rangefinder 341 is used to detect the position of the material. When the material is raised or lowered to a predetermined position, each laser rangefinder 341 is used to transmit a signal to the lead screw drive 211. Upon receiving the signal, the lead screw drive 211 stops running, so that the lifting support platform mechanism 300 stops lifting and lowering, and the material stays at the predetermined position. This makes the lifting accuracy of the workshop heavy-duty conveying device 10 based on the lead screw drive mechanism high.

[0030] Furthermore, such as Figures 4 to 6 As shown, in one embodiment, the base mechanism 100 includes a base body 110 and multiple steering wheel assemblies 120. A receiving cavity 111 and a mounting groove 112 are both formed in the base body 110. Each steering wheel assembly 120 is located outside the receiving cavity 111 and connected to the base body 110. The multiple steering wheel assemblies 120 are spaced apart, and each steering wheel assembly 120 is used for rolling connection with the ground. The lifting and bearing platform mechanism 300 is connected to the base body 110. In this embodiment, each steering wheel assembly 120 is used for rolling connection with the ground, so that the multiple steering wheel assemblies 120 work together to drive the base body 110 to move relative to the ground. This allows the base body 110 to drive the material to move relative to the ground via the lifting and bearing platform mechanism 300, making the material conveying of the workshop heavy-duty conveying device 10 based on the screw drive mechanism more convenient.

[0031] Furthermore, in one embodiment, the base mechanism 100 also includes a guide component 130, which is located in the mounting groove 112 and connected to the base body 110. The nut connecting slider 230 is also provided with a guide hole (not shown). The guide component 130 passes through the guide hole and is slidably connected to the nut connecting slider 230, so that the nut connecting slider 230 is less likely to have positional deviation during transmission, and the transmission stability between the nut connecting slider 230 and the connecting screw 220 is better.

[0032] Furthermore, in one embodiment, the guide assembly 130 includes a plurality of guide slide rods 131, which are spaced apart. There are multiple guide through holes, and the plurality of guide slide rods 131 are arranged in a one-to-one correspondence with the plurality of guide through holes. Each guide slide rod 131 passes through the corresponding guide through hole and is slidably connected to the nut connecting slider 230, so that the guide assembly 130 has good guiding performance for the nut connecting slider 230.

[0033] Furthermore, in one embodiment, a guide sleeve 1311 is provided at the connection between each guide slide rod 131 and the nut connecting slider 230, so that the sliding performance of the nut connecting slider 230 is better.

[0034] Furthermore, in one embodiment, each steering wheel assembly 120 includes a first steering wheel drive 121, a second steering wheel drive 122, a steering wheel mounting base 123, and a steering wheel body 124. The first steering wheel drive 121 is mounted on the base body 110, the second steering wheel drive 122 is mounted on the steering wheel mounting base 123, and the steering wheel body 124 is movably connected to the steering wheel mounting base 123. The power output end of the first steering wheel drive 121 is connected to the steering wheel mounting base 123, and the first steering wheel drive 121 is used to drive the steering wheel. The wheel mounting base 123 rotates, and the power output end of the second steering wheel drive component 122 is connected to the steering wheel body 124. The second steering wheel drive component 122 is used to drive the steering wheel body 124 to roll relative to the ground, making the movement of each steering wheel assembly 120 more convenient. This allows the workshop heavy-duty conveying device 10 based on the screw drive mechanism to meet the requirements of driving, steering, stationary rotation, and lateral movement under the combined action of multiple steering wheel assemblies 120, thus making the material conveying of the workshop heavy-duty conveying device 10 based on the screw drive mechanism more convenient. In this embodiment, both the first steering wheel drive component 121 and the second steering wheel drive component 122 are servo motors.

[0035] Furthermore, in one embodiment, a drive gear 1211 is provided on the power shaft of the first steering wheel drive member 121, and a connecting gear 1231 is provided on the side of the steering wheel mounting body 123 opposite to the steering wheel body 124. The drive gear 1211 and the connecting gear 1231 are meshed and connected so that the first steering wheel drive member 121 is used to drive the steering wheel mounting body 123 to rotate relative to the ground, thereby improving the transmission reliability between the first steering wheel drive member 121 and the steering wheel mounting body 123.

[0036] Furthermore, in one embodiment, a differential (not shown) is provided at the connection between the second steering wheel drive 122 and the steering wheel body 124. The steering wheel body 124 is provided with two driving wheel parts 1241. The differential can automatically adjust the speed difference between the driving wheel parts 1241, allowing the inner and outer driving wheel parts 1241 to rotate at different speeds adapted to their respective travel paths. This effectively ensures the smooth operation of the workshop heavy-duty conveyor 10 based on the screw drive mechanism, reduces the friction between the driving wheel parts 1241 and the ground, and thus effectively ensures the normal steering and driving stability of the workshop heavy-duty conveyor 10 based on the screw drive mechanism.

[0037] Furthermore, such as Figure 4 As shown, in one embodiment, there are two screw drive mechanisms 200, which are symmetrically distributed about the central axis of the base body 110, so that the lifting platform mechanism 300 is subjected to a greater driving force, thereby enabling the workshop heavy-duty conveying device 10 based on the screw drive mechanism to better meet the heavy-duty requirements.

[0038] Furthermore, such as Figures 2 to 3 As shown, in one embodiment, the base body 110 is provided with a laser navigation sensor 113. The laser navigation sensor 113 is electrically connected to the control terminal of the first steering wheel drive 121 and the control terminal of the second steering wheel drive 122, respectively. The laser navigation sensor 113 is used to detect the distance between the workshop heavy-duty conveying device 10 based on the screw drive mechanism and external obstacles, so that the workshop heavy-duty conveying device 10 based on the screw drive mechanism can better achieve obstacle avoidance function under the action of the laser navigation sensor 113, so that the conveying safety of the workshop heavy-duty conveying device 10 based on the screw drive mechanism is better.

[0039] Furthermore, such as Figures 2 to 3 As shown, in one embodiment, the base body 110 is also provided with a touch component 114, which is used to control the workshop heavy-duty conveyor 10 based on the screw drive mechanism and to display the status parameters of the workshop heavy-duty conveyor 10 based on the screw drive mechanism.

[0040] Furthermore, in one embodiment, the base body 110 is also provided with a battery assembly (not shown), which is used to power the workshop heavy-duty conveyor 10 based on the screw drive mechanism, thereby improving the ease of use of the workshop heavy-duty conveyor 10 based on the screw drive mechanism.

[0041] Furthermore, such as Figures 7 to 11 As shown, in one embodiment, the first lifting seat 311 is provided with a plurality of first limiting plates 3112, which are spaced apart. Each first limiting plate 3112 is located within the receiving cavity 111. Each first limiting plate 3112 is used to abut against the corresponding first guide slider 1111 when the nut connecting slider 230 drives the first lifting seat 311 to slide vertically relative to the base mechanism 100. The plurality of first limiting plates 3112 and the plurality of first guide sliders 1111 are arranged in a one-to-one correspondence. In this embodiment, each first limiting plate 3112 is used to abut against the corresponding first guide slider 1111 when the nut connecting slider 230 drives the first lifting seat 311 to slide vertically relative to the base mechanism 100, so as to prevent the first lifting seat 311 from disengaging from the receiving cavity 111 during the lifting process, thereby improving the limiting performance of the base mechanism 100 on the first lifting seat 311.

[0042] Furthermore, in one embodiment, the inner wall of the first lifting cavity 3111 is provided with a plurality of second guide sliders 3111a, which are spaced apart. Each second guide slider 3111a is slidably connected to the second lifting seat 321, so that a plurality of second guide sliders 3111a are spaced apart between the first lifting seat 311 and the second lifting seat 321. Each second guide slider 3111a plays a good guiding role, so that the multiple second guide sliders 3111a work together to prevent the second lifting seat 321 from positional deviation and shaking during the lifting process, thereby effectively ensuring the lifting stability and lifting reliability of the second lifting seat 321 during the lifting process.

[0043] Furthermore, in one embodiment, the second lifting seat 321 is provided with a plurality of second limiting plates 3212, which are spaced apart. Each second limiting plate 3212 is located within the first lifting cavity 3111. Each second limiting plate 3212 is used to abut against a corresponding second guide slider 3111a when the first lifting drive assembly 310 drives the second lifting drive assembly 320 to slide vertically. The plurality of second limiting plates 3212 and the plurality of second guide sliders 3111a are arranged in a one-to-one correspondence. In this embodiment, each second limiting plate 3212 is used to abut against a corresponding second guide slider 3111a when the first lifting drive assembly 310 drives the second lifting drive assembly 320 to slide vertically, so as to prevent the second lifting seat 321 from disengaging from the first lifting cavity 3111 during the lifting process, thereby improving the limiting performance of the first lifting seat 311 on the second lifting seat 321.

[0044] Furthermore, in one embodiment, the inner wall of the second lifting cavity 3211 is provided with a plurality of third guide sliders 3211a, which are spaced apart. Each third guide slider 3211a is slidably connected to the third lifting seat 331, so that a plurality of third guide sliders 3211a are spaced apart between the second lifting seat 321 and the third lifting seat 331. Each third guide slider 3211a plays a good guiding role, so that the multiple third guide sliders 3211a work together to prevent the third lifting seat 331 from positional deviation and shaking during the lifting process, thereby effectively ensuring the lifting stability and lifting reliability of the third lifting seat 331 during the lifting process.

[0045] Furthermore, in one embodiment, the third lifting seat 331 is provided with a plurality of third limiting plates 3312, which are spaced apart. Each third limiting plate 3312 is located within the second lifting cavity 3211. Each third limiting plate 3312 is used to abut against a corresponding third guide slider 3211a when the second lifting drive assembly 320 drives the third lifting drive assembly 330 to slide vertically. The plurality of third limiting plates 3312 and the plurality of third guide sliders 3211a are arranged in a one-to-one correspondence. In this embodiment, each third limiting plate 3312 is used to abut against a corresponding third guide slider 3211a when the second lifting drive assembly 320 drives the third lifting drive assembly 330 to slide vertically, so as to prevent the third lifting seat 331 from disengaging from the second lifting cavity 3211 during the lifting process, thereby improving the limiting performance of the second lifting seat 321 on the third lifting seat 331.

[0046] Furthermore, in one embodiment, the inner wall of the third lifting cavity 3311 is provided with a plurality of fourth guide sliders 3311a, which are spaced apart. Each fourth guide slider 3311a is slidably connected to the support platform assembly 340, so that a plurality of fourth guide sliders 3311a are spaced apart between the third lifting seat 331 and the support platform assembly 340. Each fourth guide slider 3311a plays a good guiding role, so that the multiple fourth guide sliders 3311a work together to prevent the support platform assembly 340 from experiencing positional displacement and shaking during the lifting process, thereby effectively ensuring the lifting stability and lifting reliability of the support platform assembly 340 during the lifting process.

[0047] Furthermore, in one embodiment, the support platform assembly 340 is provided with a plurality of fourth limiting plates 342, which are spaced apart. Each fourth limiting plate 342 is located within the third lifting cavity 3311. Each fourth limiting plate 342 is used to abut against a corresponding fourth guide slider 3311a when the third lifting drive assembly 330 drives the support platform assembly 340 to slide vertically. The plurality of fourth limiting plates 342 and the plurality of fourth guide sliders 3311a are arranged in a one-to-one correspondence. In this embodiment, each fourth limiting plate 342 is used to abut against a corresponding fourth guide slider 3311a when the third lifting drive assembly 330 drives the support platform assembly 340 to slide vertically, so as to prevent the support platform assembly 340 from disengaging from the third lifting cavity 3311 during the lifting process, thereby improving the limiting performance of the third lifting seat 331 on the support platform assembly 340.

[0048] Compared with the prior art, this disclosure has at least the following advantages: 1. The lead screw drive assembly 210 drives the connecting lead screw 220 to rotate relative to the base mechanism 100. The nut connecting slider 230 is slidably connected to the base mechanism 100. The connecting lead screw 220 passes through the connecting inner thread hole 231 and is screwed to the nut connecting slider 230, so that the connecting lead screw 220 drives the nut connecting slider 230 to slide vertically relative to the base mechanism 100. The nut connecting slider 230 is connected to the lifting bearing platform mechanism 300, so that the nut connecting slider 230 drives the lifting bearing platform mechanism 300 to slide vertically relative to the base mechanism 100. The lifting bearing platform mechanism 300 is used to carry materials, so that the lifting bearing platform mechanism 300 drives the materials to move vertically. The lifting bearing platform mechanism 300 is connected to the base mechanism 100, and the base mechanism 100 is used to roll with the ground, so that the base mechanism 100 drives the lifting bearing platform mechanism 300 to move relative to the ground, thereby completing the material conveying process. 2. Since the screw drive mechanism 200 is used to drive the lifting platform mechanism 300 to slide vertically relative to the base mechanism 100, the screw drive mechanism 200 and the lifting platform mechanism 300 together form a screw drive lifting platform structure. The screw drive lifting platform structure realizes the vertical movement of the lifting platform mechanism 300 by connecting the slider 230 with the nut. As the lifting height of the lifting platform mechanism 300 increases, the overall structural stiffness of the screw drive mechanism 200 remains unchanged. That is, the overall structural stiffness of the screw drive lifting platform structure remains unchanged, thus avoiding the problem of reduced overall structural stiffness of multi-stage scissor lift platform mechanisms in the prior art. This makes it difficult for the screw drive lifting platform structure to wobble or other problems. 3. Simultaneously, since each first guide slider 1111 is slidably connected to the lifting platform mechanism 300, multiple first guide sliders 1111 are spaced apart between the lifting platform mechanism 300 and the base mechanism 100. Each first guide slider 1111 plays a good guiding role, so that multiple first guide sliders 1111 work together to prevent the lifting platform mechanism 300 from shifting position and swaying during the lifting process. This effectively ensures the lifting stability and reliability of the lifting platform mechanism 300 during the lifting process. That is, it solves the problem in the prior art where small wear gaps are amplified by superposition in multi-stage scissor lift mechanisms, resulting in large sway amplitude of multi-stage scissor lift mechanisms. Multiple first guide sliders 1111 work together to reduce the sway amplitude of the lifting platform mechanism 300, thereby effectively reducing the risk of swaying of the lifting platform mechanism 300 during the lifting process. This makes the overall structure of the screw drive lifting platform structure less prone to swaying, resulting in better safety in the use of the screw drive lifting platform structure. Therefore, the workshop heavy-duty conveying device 10 based on the screw drive mechanism has better safety in use. The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A heavy-duty conveying device for workshops based on a screw drive mechanism, characterized in that, include: The base mechanism has a receiving cavity and an installation through groove. The receiving cavity is connected to the installation through groove. The inner wall of the receiving cavity is provided with a plurality of first guide sliders, which are spaced apart. The base mechanism is used for rolling connection with the ground. A lead screw drive mechanism includes a lead screw drive assembly, a connecting lead screw, and a nut connecting slider. The lead screw drive assembly is mounted on the base mechanism, and the connecting lead screw is rotatably connected to the base mechanism. The power output end of the lead screw drive assembly is connected to the connecting lead screw, and the lead screw drive assembly is used to drive the connecting lead screw to rotate relative to the base mechanism. The nut connecting slider passes through the mounting slot and is slidably connected to the base mechanism. The nut connecting slider has a connecting internal thread hole, and the connecting lead screw passes through the connecting internal thread hole and is screwed to the nut connecting slider. A lifting and bearing platform mechanism is inserted into the receiving cavity and connected to the base mechanism. Each first guide slider is slidably connected to the lifting and bearing platform mechanism. The nut connecting slider is connected to the lifting and bearing platform mechanism. The lifting and bearing platform mechanism is used to carry materials.

2. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 1, characterized in that, The lifting platform mechanism includes a first lifting drive assembly, a second lifting drive assembly, a third lifting drive assembly, and a platform assembly. The first lifting drive assembly passes through the receiving cavity and is connected to the base mechanism. Each first guide slider is slidably connected to the first lifting drive assembly, and the nut-connecting slider is connected to the first lifting drive assembly. The power output end of the first lifting drive assembly is connected to the second lifting drive assembly, and the first lifting drive assembly is used to drive the second lifting drive assembly to slide vertically. The power output end of the second lifting drive component is connected to the third lifting drive component, and the second lifting drive component is used to drive the third lifting drive component to slide up and down in the vertical direction. The power output end of the third lifting drive component is connected to the bearing platform component. The third lifting drive component is used to drive the bearing platform component to slide up and down in the vertical direction. The bearing platform component is used to carry the material.

3. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 2, characterized in that, The first lifting drive assembly includes a first lifting seat and a plurality of first lifting drive chain conditions. Each first lifting drive chain condition is connected to the first lifting seat, and the plurality of first lifting drive chain conditions are spaced apart around the periphery of the first lifting seat. The first lifting seat has a first lifting cavity, and the second lifting drive assembly passes through the first lifting cavity and is slidably connected to the first lifting seat. The first lifting seat passes through the receiving cavity, and each first guide slider is slidably connected to the first lifting seat. The nut connecting slider is connected to the first lifting seat. One end of each first lifting drive chain condition is fixedly connected to the second lifting drive assembly, and the other end of each first lifting drive chain condition passes through the receiving cavity and is fixedly connected to the base mechanism.

4. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 3, characterized in that, The second lifting drive assembly includes a second lifting seat and a plurality of second lifting drive chain conditions. Each second lifting drive chain condition is connected to the second lifting seat, and the plurality of second lifting drive chain conditions are spaced apart around the periphery of the second lifting seat. The second lifting seat has a second lifting cavity, and the third lifting drive assembly passes through the second lifting cavity and is slidably connected to the second lifting seat. The second lifting seat passes through the first lifting cavity and is slidably connected to the first lifting seat. One end of each second lifting drive chain condition is fixedly connected to the third lifting drive assembly, and the other end of each second lifting drive chain condition passes through the first lifting cavity and is fixedly connected to the first lifting seat.

5. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 4, characterized in that, The third lifting drive assembly includes a third lifting seat and a plurality of third lifting drive chain conditions. Each of the third lifting drive chain conditions is connected to the third lifting seat, and the plurality of third lifting drive chain conditions are arranged at intervals around the periphery of the third lifting seat. The third lifting seat has a third lifting cavity, and the bearing platform assembly passes through the third lifting cavity and is slidably connected to the third lifting seat. The third lifting seat passes through the second lifting cavity and is slidably connected to the second lifting seat. One end of each of the third lifting drive chain conditions is fixedly connected to the bearing platform assembly, and the other end of each of the third lifting drive chain conditions passes through the second lifting cavity and is fixedly connected to the second lifting seat.

6. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 3, characterized in that, Each of the first lifting drive chain conditions includes a first mounting base, a first lifting transmission chain, and a first sprocket body. The first sprocket body is rotatably connected to the first mounting base, and the first lifting transmission chain is meshed with the first sprocket body. The first mounting base is connected to the first lifting base body, one end of the first lifting transmission chain is fixedly connected to the second lifting drive assembly, and the other end of the first lifting transmission chain passes through the receiving cavity and is fixedly connected to the base mechanism.

7. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 4, characterized in that, Each of the second lifting drive chain conditions includes a second mounting base, a second lifting transmission chain, and a second sprocket body. The second sprocket body is rotatably connected to the second mounting base, and the second lifting transmission chain is meshed with the second sprocket body. The second mounting base is connected to the second lifting seat body. One end of the second lifting transmission chain is fixedly connected to the third lifting drive assembly, and the other end of the second lifting transmission chain passes through the first lifting cavity and is fixedly connected to the first lifting seat body.

8. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 5, characterized in that, Each of the third lifting drive chain conditions includes a third mounting base, a third lifting transmission chain, and a third sprocket body. The third sprocket body is rotatably connected to the third mounting base, and the third lifting transmission chain is meshed with the third sprocket body. The third mounting base is connected to the third lifting seat body. One end of the third lifting transmission chain is fixedly connected to the bearing platform assembly, and the other end of the third lifting transmission chain passes through the second lifting cavity and is fixedly connected to the second lifting seat body.

9. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 1, characterized in that, The lead screw drive assembly includes a lead screw drive component and a coupling connected together. Both the lead screw drive component and the coupling are mounted on the base mechanism. The coupling is connected to the connecting lead screw. The lead screw drive component drives the connecting lead screw to rotate relative to the base mechanism through the coupling.

10. The workshop heavy-duty conveying device based on a screw drive mechanism according to claim 9, characterized in that, The lead screw drive component is a drive motor or a hydraulic cylinder.

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