A transmission device

Abstract

The invention discloses a transmission device, belonging to the technical field of mechanical transmission, comprising a transmission box, a column, a gear and a chain, the chain comprising a plurality of groups of chain links hinged in sequence, each group of chain links comprising a first chain plate and a second chain plate, the number of the first chain plates is two, the two first chain plates are arranged in parallel and spaced, a first reinforcement rod is arranged between the two first chain plates, the number of the second chain plates is two, the two second chain plates are symmetrically distributed on the outsides of the two first chain plates, a second reinforcement rod is arranged between the two second chain plates, one end of the first chain plate is hinged with one end of the second chain plate through a first hinge shaft, one end of the first chain plate of one group of two adjacent chain links is hinged with one end of the second chain plate of the other group of chain links through a second hinge shaft, and at least two transmission shafts are arranged between the two first chain plates of each group of chain links. The transmission device has high transmission speed, high transmission accuracy, low noise, is not easy to fall suddenly, and has high safety.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical transmission, and in particular relates to a transmission device. Background Art

[0002] Lifting devices are widely used in lifting and transportation, warehousing and logistics, and going up and down floors in life. Commonly used lifting methods include hydraulic cylinder driven lifting, screw lifting, and wire rope drum lifting. These lifting methods can meet the use requirements to a certain extent. However, these lifting methods also have their shortcomings, such as hydraulic cylinder type is prone to oil leakage and slow speed, screw lifting is noisy and slow, and wire rope drum lifting is less safe. At present, chains are also used for lifting, but the existing chains are prone to shaking left and right during lifting, have poor stability, and are expensive to make. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a chain which has a simple structure, is easy to manufacture, is not prone to shaking when in a straight line, and has good stability.

[0004] Another object of the embodiments of the present invention is to provide a transmission device with high transmission speed, high transmission accuracy, low noise, not prone to sudden falling, and high safety.

[0005] The embodiment of the present invention is achieved as follows:

[0006] An embodiment of the present invention provides a chain, comprising a plurality of groups of chain links hinged in sequence, each group of the chain links comprising a first chain plate and a second chain plate, the number of the first chain plates being two, the two first chain plates being arranged in parallel and spaced apart, a first reinforcement rod being arranged between the two first chain plates, the number of the second chain plates being two, the two second chain plates being symmetrically distributed on the outer sides of the two first chain plates, a second reinforcement rod being arranged between the two second chain plates, one end of the first chain plate being hinged to one end of the second chain plate via a first hinge shaft, one end of the first chain plate of one group of chain links in two adjacent groups of the chain links being hinged to one end of the second chain plate of the other group of chain links via a second hinge shaft, and at least two transmission shafts being arranged between the two first chain plates of each group of the chain links and being spaced apart along the length direction of the chain.

[0007] Optionally, the two transmission shafts between the two first chain plates of each group of the chain links are respectively the first transmission shaft and the second transmission shaft, the axis of the first transmission shaft coincides with the axis of the first hinge shaft, and the two ends of the first transmission shaft are respectively connected to the first hinge shafts on both sides, the axis of the second transmission shaft coincides with the axis of the second hinge shaft, and the two ends of the second transmission shaft are respectively connected to the second hinge shafts on both sides.

[0008] Optionally, the first articulated shaft and the first transmission shaft are integrally formed, and the second articulated shaft and the second transmission shaft are integrally formed.

[0009] Optionally, the first reinforcement rod is detachably connected to the first chain plate, and the second reinforcement rod is detachably connected to the second chain plate.

[0010] Optionally, first notches are provided at both ends of the first link plate along the length direction of the chain at locations corresponding to the second reinforcement rod.

[0011] Optionally, second notches are provided at both ends of the second link plate along the length direction of the chain at locations corresponding to the first reinforcement rod.

[0012] Optionally, a guide bearing is provided on the first articulated shaft and / or the second articulated shaft, and the guide bearing is located on the outer side of the second chain plate.

[0013] Optionally, the edge of the first link plate on a side close to the second link plate is rounded or chamfered, and / or the edge of the second link plate on a side close to the first link plate is rounded or chamfered.

[0014] The embodiment of the present invention further provides a transmission device, including a transmission box, a column, a gear and the above-mentioned chain, the top of the transmission box is provided with a first through hole and a second through hole, the interior of the transmission box is provided with two U-shaped guide rails, the two U-shaped guide rails are arranged in parallel and spaced apart, the two ends of the U-shaped guide rails correspond to the first through hole and the second through hole, the opposite sides of the two U-shaped guide rails are provided with a first guide groove, the first guide groove extends from one end of the U-shaped guide rail to the other end, the column is vertically arranged on the top of the transmission box and is located between the first through hole and the A second guide groove is provided on the side of the column close to the first through hole, and a third guide groove is provided on the side of the column close to the second through hole. The gear is supported in the transmission box through a rotating shaft, and one end of the chain passes through the transmission box from the first through hole and passes through the second through hole to form a U-shaped structure. The chain bypasses the gear and meshes with each other. The chain located in the transmission box slides with the first guide groove, and the two chain sections located outside the transmission box slide with the second guide groove and the third guide groove respectively.

[0015] Optionally, the first hinge shaft and the second hinge shaft on both sides of the chain corresponding to the first guide groove slide in cooperation with the first guide groove, the first hinge shaft and the second hinge shaft on both sides of the chain corresponding to the second guide groove slide in cooperation with the second guide groove, and the first hinge shaft and the second hinge shaft on both sides of the chain corresponding to the third guide groove slide in cooperation with the third guide groove.

[0016] The beneficial effects of the present invention are:

[0017] The chain provided in the embodiment of the present invention has a simple structure, low manufacturing cost, and convenient disassembly and maintenance. When the chain rotates to a straight state, it has good rigidity, will not bend excessively to the outside, is not prone to shaking, has good stability, and is highly safe.

[0018] The transmission device provided in the embodiment of the present invention has fast transmission speed, high transmission accuracy, low noise, is not prone to sudden falling, and has high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a chain in a straight line state provided by an embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a chain in a bent state provided by an embodiment of the present invention;

[0022] Figure 3 A structural diagram of a chain link from one perspective;

[0023] Figure 4 It is a structural diagram of the chain link from another perspective;

[0024] Figure 5 is a schematic diagram of the structure of the transmission device;

[0025] Figure 6 It is a schematic diagram of the structure of the transmission box;

[0026] Figure 7 This is a schematic diagram of the structure of the column.

[0027] In the figure: 10-chain; 11-chain link; 111-first chain plate; 112-second chain plate; 113-first reinforcement rod; 114-second reinforcement rod; 115-first hinge shaft; 116-second hinge shaft; 117-first transmission shaft; 118-second transmission shaft; 119-first notch; 120-second notch; 121-guide bearing; 30-transmission box; 31-U-shaped guide rail; 311-first guide groove; 40-column; 41-second guide groove; 42-third guide groove; 50-gear. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0034] refer to Figure 1 and 2As shown, the first embodiment of the present invention provides a chain 10, including a plurality of groups of chain links 11 hinged in sequence.

[0035] refer to Figure 3 and 4 As shown, each group of chain links 11 includes a first link plate 111 and a second link plate 112 .

[0036] The first chain plate 111 is a rectangular plate structure. There are two first chain plates 111. The two first chain plates 111 are arranged in parallel and spaced apart. A first reinforcing rod 113 is arranged between the two first chain plates 111. The first reinforcing rod 113 and the first chain plate 111 can be welded or detachably connected. In order to facilitate disassembly, maintenance or replacement, in this embodiment, the first reinforcing rod 113 and the first chain plate 111 are detachably connected. The two ends of the first reinforcing rod 113 respectively penetrate the two first chain plates 111. Nuts are arranged at the two ends of the first reinforcing rod 113, so as to fix the first reinforcing rod 113 and the first chain plate 111 together. The number of the first reinforcing rod 113 can be one or more. In this embodiment, the number of the first reinforcing rod 113 is one and is close to the lower end of the first chain plate 111. The two right angles at the upper end of the first chain plate 111 are processed into rounded corners.

[0037] The second chain plate 112 is a rectangular plate structure. There are two second chain plates 112. The two second chain plates 112 are symmetrically distributed on the outside of the two first chain plates 111. A second reinforcing rod 114 is provided between the two second chain plates 112. The second reinforcing rod 114 and the second chain plates 112 can be welded or detachably connected. In order to facilitate disassembly, maintenance or replacement, in this embodiment, the second reinforcing rod 114 and the second chain plates 112 are detachably connected. The two ends of the second reinforcing rod 114 respectively penetrate the two second chain plates 112. Nuts are provided at the two ends of the second reinforcing rod 114, so as to fix the second reinforcing rod 114 and the second chain plates 112 together. The number of the second reinforcing rod 114 can be one or more. In this embodiment, the number of the second reinforcing rod 114 is one and is close to the lower end of the second chain plate 112. The two right angles at the upper end of the second chain plate 112 are processed into rounded corners.

[0038] One end of the first link plate 111 in the length direction overlaps with one end of the second link plate 112 in the length direction and is hinged via a first hinge shaft 115 . The first hinge shaft 115 is closer to the upper end of the first link plate 111 .

[0039] One end of the first chain plate 111 of one group of two adjacent groups of links 11 away from the first hinge shaft 115 is hinged to one end of the second chain plate 112 of the other group of links 11 away from the first hinge shaft 115 through a second hinge shaft 116, and the second hinge shaft 116 is closer to the upper end of the first chain plate 111.

[0040] In this embodiment, the distance from the first hinge shaft 115 to the upper end of the first chain plate 111 is the same as the distance from the second hinge shaft 116 to the upper end of the first chain plate 111 .

[0041] At least two transmission shafts are provided between the two first chain plates 111 of each group of chain links 11 and are spaced apart along the length direction of the chain 10. The two transmission shafts are respectively a first transmission shaft 117 and a second transmission shaft 118, the axis of the first transmission shaft coincides with the axis of the first hinge shaft 115, the two ends of the first transmission shaft 117 are respectively connected to the first hinge shaft 115 on both sides of the chain link 11, the axis of the second transmission shaft 118 coincides with the axis of the second hinge shaft 116, and the two ends of the second transmission shaft 118 are respectively connected to the second hinge shaft 116 on both sides of the chain link 11.

[0042] In this embodiment, the first hinge shaft 115 and the first transmission shaft 117 are integrally formed, and the second hinge shaft 116 and the second transmission shaft 118 are integrally formed.

[0043] The first link plates 111 are provided with first notches 119 at both ends of the first link plate 111 along the length direction of the chain 10 at positions corresponding to the second reinforcing rods 114 , so that the first link plates 111 and the second reinforcing rods 114 will not interfere with each other.

[0044] The second link plates 112 are provided with second notches 120 at both ends of the chain 10 in the length direction at locations corresponding to the first reinforcing rods 113 , so that the second link plates 112 and the first reinforcing rods 113 will not interfere with each other.

[0045] The edge of the first chain plate 111 on the side close to the second chain plate 112 is rounded or chamfered, and the edge of the second chain plate 112 on the side close to the first chain plate 111 can also be rounded or chamfered, so that the first chain plate 111 and the second chain plate 112 will not get stuck during relative rotation.

[0046] A guide bearing 121 is provided on the first hinge shaft 115, and the guide bearing 121 is located outside the second chain plate 112. Of course, the guide bearing 121 can also be provided on the second hinge shaft 116, and the guide bearing 121 is located outside the second chain plate 112. Of course, the guide bearing 121 can also be provided on both the first hinge shaft 115 and the second hinge shaft 116. The guide bearing 121 not only plays a guiding role, but also can greatly reduce the friction when the chain slides.

[0047] The first link plates 111 or the second link plates 112 on the same side of the chain 10 are located in the same plane. Example 2

[0048] refer to Figure 5 As shown, the second embodiment of the present invention provides a transmission device, including a transmission box 30, a column 40, a gear 50 and a chain 10.

[0049] It should be noted that the chain 10 in this embodiment can adopt the chain 10 in the first embodiment, and its structure, working principle and technical effects can refer to the corresponding contents in the first embodiment, which will not be described in detail here.

[0050] refer to Figure 6 As shown, a first through hole and a second through hole are provided on the top of the transmission box 30, and two U-shaped guide rails 31 are provided inside the transmission box 30. The two U-shaped guide rails 31 are arranged in parallel and spaced apart, and the two ends of the U-shaped guide rails 31 correspond to the first through hole and the second through hole respectively. The opposite sides of the two U-shaped guide rails 31 are provided with a first guide groove 311, and the first guide groove 311 extends from one end of the U-shaped guide rail 31 to the other end.

[0051] The column 40 is vertically arranged on the top of the transmission box 30 and is located between the first through hole and the second through hole. Figure 7 As shown, a second guide groove 41 is provided on one side of the column 40 close to the first through hole, and the second guide groove 41 extends along the vertical direction of the column 40 . A third guide groove 42 is provided on one side of the column 40 close to the second through hole, and the third guide groove 42 extends along the vertical direction of the column 40 .

[0052] The gear 50 is supported in the transmission box 30 through a rotating shaft. A motor and a reducer may be provided outside the transmission box 30. The output shaft of the motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to one end of the rotating shaft supporting the gear 50, so that the motor can drive the gear 50 to rotate.

[0053] One end of the chain 10 passes through the transmission box 30 from the first through hole and passes through the transmission box 30 from the second through hole, and the chain 10 forms a U-shaped structure. The chain 10 bypasses the gear 50 and meshes with the first transmission shaft 117 and the second transmission shaft 118. The rotation of the gear 50 can drive the chain 10 to move.

[0054] The guide bearings 121 on both sides of the chain 10 in the transmission box 30 are located in the first guide groove 311, the guide shaft and the first guide groove 311 are in rolling cooperation, the two sections of the chain 10 in the vertical part outside the transmission box 30 are respectively in sliding cooperation with the second guide groove 41 and the third guide groove 42, the guide bearings 121 on both sides of the chain 10 corresponding to the second guide groove 41 are located in the second guide groove 41 and in rolling cooperation, and the guide bearings 121 on both sides of the chain 10 corresponding to the third guide groove 42 are located in the third guide groove 42 and in rolling cooperation. The rolling cooperation of the guide bearings 121 with the first guide groove 311, the second guide groove 41 and the third guide groove 42 can greatly reduce the friction when the chain 10 moves.

[0055] A protective cover may be provided on one side of the column 40, and the protective cover covers the chain 10 in the third guide groove 42. A lifting platform may be provided on the chain 10 in the second guide groove 41, so that the chain 10 can drive the lifting platform to rise and fall when moving up and down along the second guide groove 41.

[0056] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A transmission device, characterized in that: The invention comprises a transmission box, a column, a gear and a chain, wherein the chain comprises a plurality of groups of chain links hinged in sequence, each group of the chain links comprises a first chain plate and a second chain plate, the number of the first chain plates is two, the two first chain plates are arranged in parallel and spaced apart, a first reinforcing rod is arranged between the two first chain plates, the number of the second chain plates is two, the two second chain plates are symmetrically distributed on the outsides of the two first chain plates, a second reinforcing rod is arranged between the two second chain plates, one end of the first chain plate is hinged to one end of the second chain plate through a first hinge shaft, one end of the first chain plate of one group of chain links in two adjacent groups of chain links is hinged to one end of the second chain plate of the other group of chain links through a second hinge shaft, and at least two transmission shafts are arranged between the two first chain plates of each group of chain links and are spaced apart along the length direction of the chain; The edge of the first link plate on a side close to the second link plate is rounded or chamfered, and / or the edge of the second link plate on a side close to the first link plate is rounded or chamfered; The two transmission shafts between the two first chain plates of each group of chain links are respectively a first transmission shaft and a second transmission shaft, the axis of the first transmission shaft coincides with the axis of the first hinge shaft, two ends of the first transmission shaft are respectively connected to the first hinge shafts on both sides, the axis of the second transmission shaft coincides with the axis of the second hinge shaft, and two ends of the second transmission shaft are respectively connected to the second hinge shafts on both sides; the first hinge shaft is integrally formed with the first transmission shaft, and the second hinge shaft is integrally formed with the second transmission shaft; the first reinforcement rod is detachably connected to the first chain plate, and the second reinforcement rod is detachably connected to the second chain plate; first notches are provided at both ends of the first chain plate along the length direction of the chain at positions corresponding to the second reinforcement rod; second notches are provided at both ends of the second chain plate along the length direction of the chain at positions corresponding to the first reinforcement rod; guide bearings are provided on the first hinge shaft and / or the second hinge shaft, and the guide bearings are located on the outer side of the second chain plate; The top of the transmission box is provided with a first through hole and a second through hole, and the interior of the transmission box is provided with two U-shaped guide rails, the two U-shaped guide rails are arranged in parallel and spaced apart, the two ends of the U-shaped guide rails correspond to the first through hole and the second through hole, and the opposite sides of the two U-shaped guide rails are provided with a first guide groove, and the first guide groove extends from one end of the U-shaped guide rail to the other end, the column is vertically arranged on the top of the transmission box and is located between the first through hole and the second through hole, the side of the column close to the first through hole is provided with a second guide groove, and the side of the column close to the second through hole is provided with a third guide groove, the gear is supported in the transmission box through a rotating shaft, one end of the chain passes through the transmission box from the first through hole and passes through the second through hole to form a U-shaped structure, the chain bypasses the gear and meshes with each other, the chain located in the transmission box slides with the first guide groove, and the two sections of the chain located outside the transmission box slide with the second guide groove and the third guide groove respectively; The first hinge shaft and the second hinge shaft on both sides of the chain corresponding to the first guide groove are slidably matched with the first guide groove, the first hinge shaft and the second hinge shaft on both sides of the chain corresponding to the second guide groove are slidably matched with the second guide groove, and the first hinge shaft and the second hinge shaft on both sides of the chain corresponding to the third guide groove are slidably matched with the third guide groove.

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