Heavy-load gear rack elevator

Abstract

The invention provides a heavy-load gear rack elevator. The heavy-load gear rack elevator comprises a main body frame mechanism, a cargo carrying mechanism and a counterweight mechanism, the main body frame mechanism comprises a profile steel stand column, and a rack, a cargo carrying guide rail and a counterweight guide rail which are arranged on the profile steel stand column; the four profile steel stand columns are combined to form a body frame. The cargo carrying mechanism comprises a cargo carrying base, an adjustable transmission assembly, a fixed transmission assembly and a guide wheel assembly, the adjustable transmission assembly comprises an adjustable motor and an adjustable gear set meshed with the rack, the fixed transmission assembly comprises a fixed motor and a fixed gear set meshed with the rack, and the guide wheel assembly is in sliding fit with the cargo carrying guide rail; the counterweight mechanism comprises a counterweight frame, a guide wheel assembly, a chain and a redirection shaft assembly; the guide wheel assembly is in sliding fit with the counterweight guide rail; the redirection shaft assembly is arranged on the main body frame, one end of the chain is connected with the cargo carrying base, and the other end of the chain is connected with the balance weight frame after passing through the redirection shaft assembly. According to the invention, the space utilization is optimized, and the transmission efficiency and stability are improved.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to a heavy-load rack and pinion elevator. Background Art

[0002] In the field of modern logistics and warehousing, in order to improve overall efficiency, four-way pallet trucks are gradually replacing traditional forklifts to take on the task of cargo handling and warehousing. However, in order to meet the needs of the four-way pallet truck's layer change and the connection between cargo warehousing and warehousing, the hoist needs to be optimized.

[0003] The applicant has found that the current elevator design has defects:

[0004] 1. Due to the limitation of plant space and the large space occupied by transmission mechanism, the height of the first floor cannot be reduced to the limit, resulting in the failure to fully utilize the space on the bottom floor. The top floor needs to reserve space for components such as motors due to structural requirements, resulting in space waste, defects in space layout, and low space utilization.

[0005] 2. Most of the existing transmission methods use chain drive or belt drive, which often makes it difficult to balance transmission accuracy and transmission speed, affecting the overall performance of the elevator. Chain drive has poor stability, is prone to vibration and additional dynamic loads during operation, and the chain is prone to elongation, requiring regular adjustment and maintenance; belt drive is prone to slippage and deformation, affecting transmission efficiency and stability, and has a relatively short service life.

[0006] For example, application number CN202323118667.5 discloses a new type of four-way shuttle reciprocating elevator

[0007] In view of this, the present invention is proposed. Summary of the invention

[0008] The purpose of the present invention is to provide a heavy-duty rack and pinion hoist to solve the technical problems in the prior art that the current hoist is limited by space, the height of the first floor cannot be reduced to the limit, the top floor space is wasted, the space utilization rate is low, the space layout has defects, and the space utilization rate is low. The preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects as described below.

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] The present invention provides a heavy-duty rack and pinion elevator, comprising a main frame mechanism, a cargo-carrying mechanism and a counterweight mechanism;

[0011] The main frame mechanism includes a steel column, a rack, a cargo rail and a counterweight rail; four of the steel columns are combined to form the main frame, and the rack, the cargo rail and the counterweight rail are respectively arranged on the steel columns;

[0012] The cargo-carrying mechanism comprises a cargo-carrying base, and an adjustable transmission assembly, a fixed transmission assembly and a guide wheel assembly arranged on the cargo-carrying base, wherein the adjustable transmission assembly and the fixed transmission assembly are arranged relative to each other; the adjustable transmission assembly comprises an adjustable motor and an adjustable gear set connected to the adjustable motor in a transmission manner, the fixed transmission assembly comprises a fixed motor and a fixed gear set connected to the fixed motor in a transmission manner, and the adjustable gear set and the fixed gear set are respectively meshed with the rack; the guide wheel assembly is slidably matched with the cargo-carrying guide rail;

[0013] The counterweight mechanism includes a counterweight frame, a guide wheel assembly, a chain and a redirecting shaft assembly. The guide wheel assembly is arranged on the counterweight frame and slidingly cooperates with the counterweight guide rail; the redirecting shaft assembly is arranged on the main frame, one end of the chain is connected to the cargo base, and the other end is connected to the counterweight frame after passing through the redirecting shaft assembly, so that the counterweight frame and the cargo platform have opposite movement directions.

[0014] Preferably, the adjustable transmission assembly also includes an adjustable base, an adjustable transmission shaft and an adjustable bearing seat assembly; the adjustable motor is installed on a non-entry and exit side of the cargo base through the adjustable base; the output shaft of the adjustable motor is transmission-connected to the adjustable transmission shaft; the adjustable transmission shaft is connected to the non-entry and exit side of the cargo base through the adjustable bearing seat assembly; the adjustable gear set includes a first gear and a first expansion gear; one end of the adjustable transmission shaft is connected to the first gear flat key, and the other end is connected to the first expansion gear through an expansion sleeve.

[0015] Preferably, the adjustable bearing seat assembly includes a first bearing seat, a first bearing fixing seat and a first fixed base plate. The first bearing seat is in transmission cooperation with the adjustable transmission shaft and is installed on the first bearing fixing seat. The first bearing fixing seat is provided with a waist hole and a first tensioning hole. The adjusting screw passes through the waist hole and is connected to the base plate of the first fixed base plate. The fixing screw passes through the first tensioning hole and is connected to the side plate of the first fixed base plate. The first fixed base plate is connected to the cargo base.

[0016] Preferably, the fixed transmission assembly also includes a fixed base, a fixed transmission shaft and a fixed bearing seat assembly, the fixed motor is installed on the other non-entry and exit side of the cargo base through the fixed base, the output shaft of the fixed motor is transmission-connected to the fixed transmission shaft, and the fixed transmission shaft is connected to the non-entry and exit side of the cargo base through the fixed bearing seat assembly; the fixed gear group includes a second gear and a second expansion gear; one end of the fixed transmission shaft is connected to the second gear flat key, and the other end is connected to the second expansion gear through an expansion sleeve.

[0017] Preferably, the fixed bearing seat assembly includes a second bearing seat, a second bearing fixing seat and a second fixed base plate, the second bearing seat is in transmission cooperation with the fixed transmission shaft and is installed on the second bearing fixing seat, the second bearing fixing seat is provided with a connecting hole and a second tensioning hole, the adjusting screw passes through the connecting hole and is connected to the base plate of the second fixed base plate, the fixing screw passes through the second tensioning hole and is connected to the side plate of the second fixed base plate, and the second fixed base plate is connected to the cargo base.

[0018] Preferably, it also includes a chain machine fixing plate, an anti-collision fixing plate and a chain fixing plate, the chain machine fixing plate is symmetrically arranged on the entry and exit side of the cargo base, the anti-collision fixing plate is symmetrically arranged on the non-entry and exit side of the cargo base, and the chain fixing plate is arranged on the non-entry and exit side of the cargo base.

[0019] Preferably, the redirecting shaft assembly includes a first redirecting shaft assembly and a second redirecting shaft assembly, and the first redirecting shaft assembly and the second redirecting shaft assembly are respectively arranged on the top of the non-entry and exit side of the main frame through steel sections, so as to change the running direction of the chain; the counterweight guide rail is arranged on the non-entry and exit side of the main frame, and the guide wheel assembly is adjustably arranged on both sides of the counterweight frame; the counterweight frame is provided with a chain fixing shaft, an anti-collision fixing block and a counterweight baffle, one end of the chain is connected to the chain fixing plate, and the other end is connected to the chain fixing shaft after passing through the second redirecting shaft assembly and the first redirecting shaft assembly in turn.

[0020] Preferably, a pull rod is provided between two adjacent steel columns, a protective net is provided on the main frame, and a ladder is provided on the outside of one of the non-entry and exit sides.

[0021] The preferred technical solution of the present invention can at least produce the following technical effects:

[0022] The present invention effectively avoids the technical problems existing in the prior art that the current hoist is limited by space, the height of the first floor cannot be lowered to the limit, the top space is wasted, the space utilization rate is low, and the space layout has defects. The present invention provides a heavy-duty rack and pinion hoist, including a main frame mechanism, a cargo mechanism and a counterweight mechanism; the main frame mechanism includes a steel column, a rack, a cargo guide rail and a counterweight guide rail; four steel columns are combined to form the main frame, and the rack, the cargo guide rail and the counterweight guide rail are respectively arranged on the steel columns; the cargo mechanism includes a cargo base, and an adjustable transmission assembly, a fixed transmission assembly and a guide wheel assembly arranged on the cargo base, and the adjustable transmission assembly and the fixed transmission assembly are arranged relatively to each other; the adjustable transmission assembly includes an adjustable motor and an adjustable motor connected to the adjustable motor for transmission. The adjustable gear set, the fixed transmission assembly includes a fixed motor and a fixed gear set connected to the fixed motor, and the adjustable gear set and the fixed gear set are respectively meshed with the rack; the guide wheel assembly is slidably matched with the cargo rail; the counterweight mechanism includes a counterweight frame, a guide wheel assembly, a chain and a redirecting shaft assembly, the guide wheel assembly is arranged on the counterweight frame, and is slidably matched with the counterweight rail; the redirecting shaft assembly is arranged on the main frame, one end of the chain is connected to the cargo base, and the other end is connected to the counterweight frame after passing through the redirecting shaft assembly, so that the movement direction of the counterweight frame is opposite to that of the cargo platform. The main frame of the present invention is composed of four steel columns, the structure is stable and compact, the overall structural strength and stability are good, and the rack, cargo rail and counterweight rail are all installed on the columns, which effectively reduces the demand for the bottom space, releases the bottom space, and thus reduces the height of the first floor of the elevator. The adjustable motor and the fixed motor are arranged on the cargo base, and move with the cargo base, which greatly reduces the occupation of the top space, the layout is compact and reasonable, and the space utilization rate is improved. The cargo base and the main frame use a gear rack transmission method to improve the transmission accuracy and speed, with good transmission stability and high load-bearing capacity. The cargo rails and counterweight rails are respectively set on the steel columns, and slide with the guide wheel assembly of the cargo mechanism and the guide wheel assembly of the counterweight mechanism to make the cargo base and the counterweight frame move smoothly in the vertical direction. At the same time, the counterweight frame is connected to the cargo base through a chain, and realizes the reverse movement with the cargo platform through the redirection shaft assembly to effectively balance the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a heavy-duty rack and pinion hoist provided by the present invention;

[0025] Figure 2 It is a structural schematic diagram of a main frame mechanism of a heavy-duty rack and pinion hoist provided by the present invention;

[0026] Figure 3 It is a structural schematic diagram of a cargo loading mechanism of a heavy-duty rack and pinion elevator provided by the present invention;

[0027] Figure 4 It is a structural schematic diagram of an adjustable transmission assembly of a heavy-duty rack and pinion hoist provided by the present invention;

[0028] Figure 5 It is a structural schematic diagram of a counterweight mechanism of a heavy-duty rack and pinion elevator provided by the present invention.

[0029] In the figure:

[0030] 1. Main frame structure; 11. Steel column; 12. Rack; 13. Cargo rail; 14. Counterweight rail; 15. Pull rod; 16. Guard net; 17. Ladder;

[0031] 2. Cargo mechanism; 21. Cargo base; 22. Adjustable transmission assembly; 221. First gear; 222. First expansion gear; 223. Adjustable motor; 224. Adjustable base; 225. Adjustable transmission shaft; 226. First bearing seat; 227. First bearing fixing seat; 2271. Waist hole; 2272. Adjusting screw; 2273. Fixing screw; 228. First fixed bottom plate; 23. Fixed transmission assembly; 231. Second gear; 232. Second expansion gear; 233. Fixed motor; 234. Fixed base; 235. Fixed transmission shaft; 236. Second bearing seat; 237. Second bearing fixing seat; 238. Second fixed bottom plate; 24. Guide wheel assembly; 25. Chain machine fixing plate; 26. Anti-collision fixing plate; 27. Chain fixing plate;

[0032] 3. Counterweight mechanism; 31. Counterweight frame; 32. Guide wheel assembly; 33. First redirecting shaft assembly; 34. Second redirecting shaft assembly; 35. Steel section; 36. Chain fixing shaft; 37. Anti-collision fixing block; 38. Counterweight baffle. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0034] like Figure 1-Figure 5As shown, the present invention provides a heavy-duty gear rack 12 hoist, including a main frame mechanism 1, a cargo mechanism 2 and a counterweight mechanism 3; the main frame mechanism 1 includes a steel column 11, a rack 12, a cargo guide rail 13 and a counterweight guide rail 14; four steel columns 11 are combined to form a main frame, and the rack 12, the cargo guide rail 13 and the counterweight guide rail 14 are respectively arranged on the steel columns 11; the cargo mechanism 2 includes a cargo base 21, and an adjustable transmission assembly 22, a fixed transmission assembly 23 and a guide wheel assembly 24 arranged on the cargo base 21, and the adjustable transmission assembly 22 and the fixed transmission assembly 23 are arranged opposite to each other; the adjustable transmission assembly 22 includes an adjustable motor 223 and a guide wheel assembly 24 connected to the adjustable motor The adjustable gear group is connected to the machine 223 for transmission, the fixed transmission assembly 23 includes a fixed motor 233 and a fixed gear group connected to the fixed motor 233 for transmission, and the adjustable gear group and the fixed gear group are respectively meshed with the rack 12; the guide wheel assembly 24 is slidably matched with the cargo guide rail 13; the counterweight mechanism 3 includes a counterweight frame 31, a guide wheel assembly 32, a chain and a redirecting shaft assembly, the guide wheel assembly 32 is arranged on the counterweight frame 31, and is slidably matched with the counterweight guide rail 14; the redirecting shaft assembly is arranged on the main frame, one end of the chain is connected to the cargo base 21, and the other end is connected to the counterweight frame 31 after passing through the redirecting shaft assembly, so that the movement direction of the counterweight frame 31 is opposite to that of the cargo platform.

[0035] The main frame is composed of four steel columns 11, with a stable and compact structure, good overall structural strength and stability, and the rack 12, cargo rails 13 and counterweight rails 14 are all installed on the columns, effectively reducing the demand for the bottom space, freeing up the bottom space, thereby reducing the first floor height of the elevator. In addition, the adjustable motor 223 and the fixed motor 233 are arranged on the cargo base 21 and move with the cargo base 21, greatly reducing the occupation of the top floor space, the layout is compact and reasonable, and the space utilization rate is improved.

[0036] The gear rack 12 transmission mode is adopted between the cargo base 21 and the main frame, which improves the transmission accuracy and speed, has good transmission stability and high load-bearing capacity. In addition, the cargo guide rail 13 and the counterweight guide rail 14 are respectively arranged on the steel column 11, and slide with the guide wheel assembly 24 of the cargo mechanism 2 and the guide wheel assembly 32 of the counterweight mechanism 3, so that the cargo base 21 and the counterweight frame 31 can move smoothly in the vertical direction.

[0037] The counterweight frame 31 is connected to the cargo base 21 through a chain, and realizes reverse movement with the cargo platform through a redirecting shaft assembly to effectively balance the load.

[0038] Furthermore, the steel column 11 can be made of H-shaped steel or angle steel, which has high structural strength and rigidity and can meet the requirements of heavy-load hoists.

[0039] The steel column 11 is preferably an H-shaped steel, and the rack 12 is respectively arranged on the steel column 11 in a one-to-one correspondence with the first gear 221, the first expansion gear 222, the second gear 231 and the second expansion gear 232 of the cargo-carrying mechanism 2. The cargo guide rails 13 are respectively arranged on the steel column 11 in a one-to-one correspondence with the guide wheel assembly 24. Further, the wing plate of the steel column 11 can be directly used as the cargo guide rail 13, and slideably cooperates with the guide wheel assembly 24.

[0040] The cargo base 21 is formed by welding square tubes, so that the cargo base 21 has high structural strength, rigidity and stability, high bearing capacity, and can meet the needs of heavy-load hoists.

[0041] The guide wheel assembly 24 is adjustably mounted at the four corners of the cargo base 21 to improve the stability and reliability of the cargo base 21 during the vertical movement. Moreover, the position of the guide wheel assembly 24 on the cargo base 21 can be fine-tuned to adapt to different work requirements.

[0042] As an optional implementation, Figure 1 , 2 As shown, a tie rod 15 is provided between two adjacent steel columns 11, a protective net 16 is provided on the main frame, and a ladder 17 is provided on the outside of a non-entry and exit side.

[0043] Furthermore, a protective net 16 is provided on the non-entry and exit side of the main frame, and a protective net 16 can be provided on the upper portion of the entry and exit side of the main frame according to usage requirements.

[0044] The pull rod 15 can enhance the overall structural strength, rigidity and stability of the main frame. The number of pull rods 15 can be set according to the use requirements.

[0045] The protective net 16 plays a certain protective role and effectively prevents people from entering by mistake.

[0046] The ladder 17 serves to facilitate personnel climbing and to overhaul and maintain the hoist.

[0047] As an optional implementation, Figure 3 As shown, the adjustable transmission assembly 22 also includes an adjustable base 224, an adjustable transmission shaft 225 and an adjustable bearing seat assembly. The adjustable motor 223 is installed on a non-entry and exit side of the cargo base 21 through the adjustable base 224. The output shaft of the adjustable motor 223 is transmission-connected with the adjustable transmission shaft 225. The adjustable transmission shaft 225 is connected to the non-entry and exit side of the cargo base 21 through the adjustable bearing seat assembly; the adjustable gear set includes a first gear 221 and a first expansion gear 222; one end of the adjustable transmission shaft 225 is connected to the first gear 221 with a flat key, and the other end is connected to the first expansion gear 222 through an expansion sleeve.

[0048] The adjustable motor 223 serves as a power source and is adjustably mounted on the non-entry and exit side of the cargo base 21 through the adjustable base 224. The layout is reasonable, and the adjustable motor 223 moves with the cargo base 21, which greatly reduces the occupation of the top space. The layout is compact and reasonable, and the space utilization rate is improved.

[0049] As an optional implementation, Figure 4 As shown, the adjustable bearing seat assembly includes a first bearing seat 226, a first bearing fixing seat 227 and a first fixed base plate 228. The first bearing seat 226 is in transmission cooperation with the adjustable transmission shaft 225 and is installed on the first bearing fixing seat 227. The first bearing fixing seat 227 is provided with a waist hole 2271 and a first tensioning hole. The adjusting screw 2272 passes through the waist hole 2271 and is connected to the bottom plate of the first fixed base plate 228. The fixing screw 2273 passes through the first tensioning hole and is connected to the side plate of the first fixed base plate 228. The first fixed base plate 228 is connected to the cargo base 21.

[0050] The first bearing seat 226 is used to mount and fix the transmission shaft 235 , and is firmly installed on the first bearing fixing seat 227 .

[0051] The design of the waist hole 2271 on the first bearing fixing seat 227 allows the position of the first bearing fixing seat 227 on the first fixing base plate 228 to be finely adjusted.

[0052] The adjusting screw 2272 passes through the waist hole 2271 and is connected to the bottom plate of the first fixed bottom plate 228 so that the two are fixedly connected. At the same time, the fixing screw 2273 passes through the first tensioning hole and is connected to the side plate of the first fixed bottom plate 228 to further improve the stability of the connection between the two.

[0053] The adjustable base 224 allows the adjustable motor 223 to be fine-tuned on the non-entry and exit side of the cargo base 21. Since the adjustable motor 223 is connected to the adjustable transmission shaft 225, the fine-tuning action of the motor is transmitted to the adjustable transmission shaft 225, thereby driving the first gear 221 and the first expansion gear 222 to be fine-tuned synchronously, so as to optimize the meshing cooperation between the adjustable gear set and the rack 12, thereby improving the transmission efficiency and accuracy.

[0054] As an optional implementation, Figure 3As shown, the fixed transmission assembly 23 also includes a fixed base 234, a fixed transmission shaft 235 and a fixed bearing seat assembly. The fixed motor 233 is installed on the other non-entry and exit side of the cargo base 21 through the fixed base 234. The output shaft of the fixed motor 233 is transmission-connected with the fixed transmission shaft 235. The fixed transmission shaft 235 is connected to the non-entry and exit side of the cargo base 21 through the fixed bearing seat assembly; the fixed gear set includes a second gear 231 and a second expansion gear 232; one end of the fixed transmission shaft 235 is connected to the second gear 231 with a flat key, and the other end is connected to the second expansion gear 232 through a expansion sleeve.

[0055] The fixed motor 233 serves as a power source and is firmly installed on the other non-entry and exit side of the cargo base 21 through the fixed base 234. The layout is reasonable. The fixed motor 233 moves with the cargo base 21, which greatly reduces the occupation of the top space. The layout is compact and reasonable, and the space utilization rate is improved.

[0056] The adjustable motor 223 drives the adjustable transmission shaft 225 to drive the first gear 221 and the first tensioning gear 222 to rotate synchronously, and the fixed motor 233 drives the fixed transmission shaft 235 to drive the second gear 231 and the second tensioning gear 232 to rotate synchronously. Since the first gear 221, the first tensioning gear 222, the second gear 231 and the second tensioning gear 232 are respectively engaged with their corresponding racks 12, the cargo base 21 is driven to move in the vertical direction.

[0057] like Figure 3 As described above, the first gear 221 and the first expansion gear 222 are driven by the same adjustable motor 223, and the second gear 231 and the second expansion gear 232 are driven by the same fixed motor 233, thereby simplifying the transmission system.

[0058] The first gear 221 and the first expansion gear 222 can also be respectively equipped with an independent adjustable motor 223 for driving, and the second gear 231 and the second expansion gear 232 can also be respectively equipped with an independent fixed motor 233 for driving, which has good flexibility.

[0059] As an optional implementation, Figure 4 As shown, the fixed bearing seat assembly includes a second bearing seat 236, a second bearing fixing seat 237 and a second fixed base plate 238. The second bearing seat 236 is in transmission cooperation with the fixed transmission shaft 235 and is installed on the second bearing fixing seat 237. The second bearing fixing seat 237 is provided with a connecting hole and a second tensioning hole. The adjusting screw 2272 passes through the connecting hole and is connected to the base plate of the second fixed base plate 238. The fixing screw 2273 passes through the second tensioning hole and is connected to the side plate of the second fixed base plate 238. The second fixed base plate 238 is connected to the cargo base 21.

[0060] The second bearing seat 236 is used to mount the fixed transmission shaft 235 and is firmly mounted on the second bearing fixing seat 237. The connecting hole of the second bearing fixing seat 237 is a circular through hole and has no adjustment capability. The connection between the second bearing fixing seat 237 and the second fixing base plate 238 is stable and firm through the cooperation of the connecting hole and the second tensioning hole.

[0061] As an optional implementation, Figure 3 As shown, the chain machine fixing plate 25, the anti-collision fixing plate 26 and the chain fixing plate 27 are also included. The chain machine fixing plate 25 is symmetrically arranged on the inlet and outlet sides of the cargo base 21, and is used to install the front chain machine, so that the cargo base 21 is docked with the front chain machine, realizing the autonomous layer changing and in-and-out operation of the four-way vehicle, meeting the needs of fast access and improving the overall efficiency.

[0062] The anti-collision fixing plate 26 is symmetrically arranged on the non-entry and non-exit side of the cargo bed 21 to protect the cargo bed 21 and the transmission structure.

[0063] The chain fixing plate 27 is provided at the non-entry and exit side of the cargo base 21 and is used for installing the chain connected to the counterweight frame 31 .

[0064] As an optional implementation, Figure 5 As shown, the redirecting shaft assembly includes a first redirecting shaft assembly 33 and a second redirecting shaft assembly 34. The first redirecting shaft assembly 33 and the second redirecting shaft assembly 34 are respectively arranged on the top of the non-entry and exit side of the main frame through a steel section 35, so as to change the running direction of the chain; the counterweight guide rail 14 is arranged on the non-entry and exit side of the main frame, and the guide wheel assembly 32 is adjustably arranged on both sides of the counterweight frame 31; the counterweight frame 31 is provided with a chain fixing shaft 36, an anti-collision fixing block 37 and a counterweight baffle 38, one end of the chain is connected to the chain fixing plate 27, and the other end is connected to the chain fixing shaft 36 after passing through the second redirecting shaft assembly 34 and the first redirecting shaft assembly 33 in turn.

[0065] Furthermore, the steel member 35 is preferably an H-steel member, and is mounted on the top of the two steel columns 11 located on the non-entry and exit sides. The structure is simplified while ensuring structural strength and stability.

[0066] The counterweight guide rail 14 and the guide wheel assembly 32 are arranged in a one-to-one correspondence on the steel column 11 on the non-entry and exit side.

[0067] The chain fixing shaft 36 is disposed on the upper end surface of the counterweight frame 31 and is used to fix the chain so as to ensure a stable connection between the chain and the counterweight frame 31 .

[0068] When the cargo base 21 reciprocates along the rack 12, the chain moves accordingly and is transmitted and reversed through the first redirecting shaft assembly 33 and the second redirecting shaft assembly 34, driving the counterweight frame 31 to move along the guide rail in the opposite direction of the cargo base 21. It should be noted that the first redirecting shaft assembly 33 and the second redirecting shaft assembly 34 adopt the existing technology, as long as the transmission and reversal of the chain can be achieved, so that the chain can be smoothly transmitted between the cargo base 21 and the counterweight frame 31 according to the predetermined path.

[0069] The guide wheel assembly 32 is adjustably arranged on the adjustment slots on both sides of the counterweight frame 31, and the position of the guide wheel assembly 32 can be adjusted according to the use requirements. And through the sliding cooperation between the guide wheel assembly 32 and the counterweight guide rail 14, the movement of the counterweight frame 31 in the vertical direction is more stable and reliable.

[0070] The anti-collision fixing blocks 37 are arranged on the upper end surface and the lower end surface of the counterweight frame 31 to protect the counterweight frame 31 .

[0071] The counterweight baffle 38 is disposed in the middle of the counterweight frame 31 to enhance the structural strength and stability of the counterweight frame 31 and increase the counterweight so that the movement of the counterweight frame 31 in the vertical direction is more stable and reliable.

[0072] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0073] In the description of the present invention, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0074] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "an example" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0076] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heavy-duty rack and pinion elevator, characterized in that: It includes a main frame mechanism, a cargo-carrying mechanism and a counterweight mechanism; The main frame mechanism includes a steel column, a rack, a cargo rail and a counterweight rail; four of the steel columns are combined to form the main frame, and the rack, the cargo rail and the counterweight rail are respectively arranged on the steel columns; The cargo-carrying mechanism comprises a cargo-carrying base, and an adjustable transmission assembly, a fixed transmission assembly and a guide wheel assembly arranged on the cargo-carrying base, wherein the adjustable transmission assembly and the fixed transmission assembly are arranged relative to each other; the adjustable transmission assembly comprises an adjustable motor and an adjustable gear set connected to the adjustable motor in a transmission manner, the fixed transmission assembly comprises a fixed motor and a fixed gear set connected to the fixed motor in a transmission manner, and the adjustable gear set and the fixed gear set are respectively meshed with the rack; the guide wheel assembly is slidably matched with the cargo-carrying guide rail; The counterweight mechanism includes a counterweight frame, a guide wheel assembly, a chain and a redirecting shaft assembly. The guide wheel assembly is arranged on the counterweight frame and slidingly cooperates with the counterweight guide rail; the redirecting shaft assembly is arranged on the main frame, one end of the chain is connected to the cargo base, and the other end is connected to the counterweight frame after passing through the redirecting shaft assembly, so that the counterweight frame and the cargo platform have opposite movement directions.

2. A heavy-duty rack and pinion elevator according to claim 1, characterized in that: The adjustable transmission assembly also includes an adjustable base, an adjustable transmission shaft and an adjustable bearing seat assembly. The adjustable motor is installed on a non-entry and exit side of the cargo base through the adjustable base. The output shaft of the adjustable motor is transmission-connected to the adjustable transmission shaft. The adjustable transmission shaft is connected to the non-entry and exit side of the cargo base through the adjustable bearing seat assembly. The adjustable gear set includes a first gear and a first expansion gear. One end of the adjustable transmission shaft is connected to the first gear flat key, and the other end is connected to the first expansion gear through an expansion sleeve.

3. A heavy-duty rack and pinion elevator according to claim 2, characterized in that: The adjustable bearing seat assembly includes a first bearing seat, a first bearing fixing seat and a first fixed base plate. The first bearing seat is in transmission cooperation with the adjustable transmission shaft and is installed on the first bearing fixing seat. The first bearing fixing seat is provided with a waist hole and a first tensioning hole. The adjusting screw passes through the waist hole and is connected to the base plate of the first fixed base plate. The fixing screw passes through the first tensioning hole and is connected to the side plate of the first fixed base plate. The first fixed base plate is connected to the cargo base.

4. A heavy-duty rack and pinion elevator according to claim 3, characterized in that: The fixed transmission assembly also includes a fixed base, a fixed transmission shaft and a fixed bearing seat assembly; the fixed motor is installed on the other non-entry and exit side of the cargo base through the fixed base; the output shaft of the fixed motor is transmission-connected to the fixed transmission shaft; the fixed transmission shaft is connected to the non-entry and exit side of the cargo base through the fixed bearing seat assembly; the fixed gear set includes a second gear and a second expansion gear; one end of the fixed transmission shaft is connected to the second gear flat key, and the other end is connected to the second expansion gear through an expansion sleeve.

5. A heavy-duty rack and pinion elevator according to claim 4, characterized in that: The fixed bearing seat assembly includes a second bearing seat, a second bearing fixing seat and a second fixed base plate. The second bearing seat is in transmission cooperation with the fixed transmission shaft and is installed on the second bearing fixing seat. The second bearing fixing seat is provided with a connecting hole and a second tensioning hole. The adjusting screw passes through the connecting hole and is connected to the base plate of the second fixed base plate. The fixing screw passes through the second tensioning hole and is connected to the side plate of the second fixed base plate. The second fixed base plate is connected to the cargo base.

6. A heavy-duty rack and pinion elevator according to claim 5, characterized in that: It also includes a chain machine fixing plate, an anti-collision fixing plate and a chain fixing plate. The chain machine fixing plate is symmetrically arranged on the entry and exit side of the cargo base, the anti-collision fixing plate is symmetrically arranged on the non-entry and exit side of the cargo base, and the chain fixing plate is arranged on the non-entry and exit side of the cargo base.

7. A heavy-duty rack and pinion elevator according to claim 6, characterized in that: The redirecting shaft assembly includes a first redirecting shaft assembly and a second redirecting shaft assembly, and the first redirecting shaft assembly and the second redirecting shaft assembly are respectively arranged on the top of the non-entry and exit side of the main frame through steel sections, so as to change the running direction of the chain; the counterweight guide rail is arranged on the non-entry and exit side of the main frame, and the guide wheel assembly is adjustably arranged on both sides of the counterweight frame; the counterweight frame is provided with a chain fixing shaft, an anti-collision fixing block and a counterweight baffle, one end of the chain is connected to the chain fixing plate, and the other end is connected to the chain fixing shaft after passing through the second redirecting shaft assembly and the first redirecting shaft assembly in turn.

8. A heavy-duty rack and pinion elevator according to claim 1, characterized in that: A pull rod is arranged between two adjacent steel columns, a protective net is arranged on the main frame, and a ladder is arranged outside the non-entry and exit side.

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