Chain transmission pallet fork for stereoscopic warehouse

Abstract

The utility model belongs to the technical field of pallet forks, and particularly relates to a chain transmission pallet fork for a stereoscopic warehouse. A middle plate assembly; the driving assembly comprises a mounting plate arranged at one end of the lower substrate and a motor fixed on the mounting plate; the first transmission assembly comprises a first chain gear connected with an output shaft of the motor, a chain wheel seat arranged at the other end of the lower base plate, a second chain gear connected with the chain wheel seat and a first chain wound on the first chain gear and the second chain gear; wherein the head end and the tail end of the first chain are connected with the bottom of the middle base plate; according to the chain transmission pallet fork for the stereoscopic warehouse, when the motor is started, the first chain gear is driven to rotate, the first chain gear drives the first chain to move, and the first chain drives the middle base plate to move, so that the middle base plate slides on the lower base plate, and telescopic movement of the pallet fork is achieved; therefore, the effects of simple and compact structure, low manufacturing cost, stable operation and convenient maintenance are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cargo fork, specifically relates to a chain drive cargo fork for stereoscopic warehouse. BACKGROUND

[0002] With the rapid development of automation technology, as the core carrier of efficient storage and management, the stereoscopic warehouse puts forward higher requirements on the performance of the goods storage and retrieval equipment. As the key actuating mechanism of the stereoscopic warehouse stacker, the driving mode of the cargo fork directly affects the stability, operation efficiency and maintenance cost of the warehouse system.

[0003] The traditional cargo fork is mostly driven by gear rack or hydraulic drive to realize telescopic movement, but there are still many deficiencies in practical application.

[0004] Firstly, although the gear rack transmission can provide high positioning accuracy, its structure is complex, the manufacturing cost is high, and the tooth surface is easy to wear after long-term operation, which leads to the increase of transmission gap and affects the positioning stability.

[0005] Secondly, although the hydraulic drive system can bear a large load, it has problems such as large volume, high energy consumption, easy leakage, high maintenance cost and sensitivity to environmental pollution, which is difficult to meet the needs of modern warehouse green development.

[0006] Therefore, in order to solve the above problems, it is necessary to design a chain drive cargo fork for stereoscopic warehouse. CONTENT OF THE UTILITY MODEL

[0007] The utility model aims at providing a chain drive cargo fork for stereoscopic warehouse to solve the technical problems mentioned in the background art.

[0008] In order to solve the above technical problems, the utility model provides a chain drive cargo fork for stereoscopic warehouse, which comprises:

[0009] The lower plate assembly comprises a lower base plate and a first support plate symmetrically arranged on the top of the two sides of the lower base plate;

[0010] The middle plate assembly comprises a middle base plate arranged above the two first support plates; wherein

[0011] The bottom of the middle base plate is slidably connected with the two first support plates;

[0012] The driving assembly comprises a mounting plate arranged at one end of the lower base plate and a motor fixed on the mounting plate;

[0013] The first transmission assembly comprises a first chain gear connected with the output shaft of the motor, a chain wheel seat arranged on the other end of the lower base plate, a second chain gear connected with the chain wheel seat and a first chain wound on the first chain gear and the second chain gear; wherein

[0014] The first chain first end and the last end are connected with the bottom of the middle base plate;

[0015] The motor is adapted to drive the first chain gear to rotate at the start, the first chain gear drives the first chain to move, and the first chain drives the middle base plate to move, so that the middle base plate slides on the lower base plate.

[0016] Further, one end of the lower base plate is provided with a first avoiding part; wherein

[0017] The mounting plate is arranged on the inner side of the first avoiding part; and

[0018] The first chain gear is located below the first avoiding part;

[0019] The lower plate assembly further comprises a support arranged on the top of the lower base plate, and two third chain gears connected with the mounting plate and the support; wherein

[0020] The support is located above the other side of the first avoiding part;

[0021] The two third chain gears are located above the first avoiding part;

[0022] The first avoiding part is adapted to avoid the first chain; and

[0023] The first chain is engaged with the third chain gears located on the outer side, the first chain gear, the third chain gears located on the inner side and the second chain gear in sequence, and the first chain is in a horizontal L shape.

[0024] Further, the first transmission assembly further comprises a chain connecting piece arranged on the bottom of the middle base plate; wherein

[0025] The two ends of the chain connecting piece are connected with the two ends of the first chain respectively.

[0026] Further, the lower plate assembly further comprises a plurality of first support rollers symmetrically arranged on the inner side of the two first support plates, a plurality of first roller supports symmetrically arranged on the inner side of the two first support plates, and a first positioning roller arranged on the first roller support; wherein

[0027] Each first roller support is arranged between the corresponding two first support rollers;

[0028] The middle plate assembly further comprises T-shaped guide rails symmetrically arranged on the top of the middle base plate; wherein

[0029] The outer side bottom of the two T-shaped guide rails in the horizontal direction is in contact with the corresponding first support roller;

[0030] The outer side of the two T-shaped guide rails in the vertical direction is in contact with the corresponding first positioning roller.

[0031] Further, the driving assembly further comprises a speed reducer arranged on one side of the mounting plate; wherein

[0032] The motor is arranged on one side of the speed reducer, and an output shaft of the motor is connected with the speed reducer; and

[0033] The first chain gear is connected with an output shaft of the speed reducer;

[0034] The motor is adapted to drive the first chain gear to rotate through the speed reducer.

[0035] Further, the top of each of the two T-shaped guide rails is provided with an upper plate assembly; wherein

[0036] The upper plate assembly comprises an upper base plate arranged above the two T-shaped guide rails, a second support plate symmetrically arranged at the bottom of the upper base plate, a plurality of second support rollers symmetrically arranged outside the two second support plates, at least two second roller supports symmetrically arranged outside the two second support plates, and a second positioning roller arranged on the second roller support; wherein

[0037] Each of the second roller supports is arranged between the corresponding two second support rollers at the two ends;

[0038] The inner side of each of the two T-shaped guide rails in the vertical direction is in contact with the corresponding second positioning roller;

[0039] Each of the second support rollers is adapted to roll on the middle base plate; and

[0040] The inner side of each of the two T-shaped guide rails in the horizontal direction is adapted to limit the top of the corresponding second support roller.

[0041] Further, a second transmission assembly is arranged between the lower plate assembly, the middle plate assembly and the upper plate assembly;

[0042] One end of the middle base plate is provided with a second avoiding part;

[0043] The second transmission assembly comprises a first end head fixing member arranged at the bottom of the middle base plate, a first sprocket support arranged at the top of the lower base plate, a fourth chain gear connected with the first sprocket support, a second sprocket support arranged in the second avoiding part, a fifth chain gear connected with the second sprocket support, a first fixing head arranged at the bottom of the upper base plate, a first tightening screw engaged with the first fixing head, and a second chain connected with the first tightening screw; wherein

[0044] The second chain is adapted to pass through the second avoiding part after being engaged with the fifth chain gear, and is connected with the first end head fixing member after being engaged with the fourth chain gear.

[0045] Further, a third transmission assembly is arranged between the lower plate assembly, the middle plate assembly and the upper plate assembly;

[0046] The other end of the middle base plate is provided with a third avoiding part;

[0047] The third transmission assembly comprises a second end head fixing member arranged at the bottom of the middle base plate, a third sprocket support arranged at the top of the lower base plate, a sixth chain gear connected with the third sprocket support, a fourth sprocket support arranged in the third avoiding part, a seventh chain gear connected with the fourth sprocket support, a second fixing head arranged at the bottom of the upper base plate, a second tightening screw engaged with the second fixing head, and a third chain connected with the second tightening screw.

[0048] The third chain is adapted to pass through the third avoiding part after being engaged with the seventh chain gear, and is connected with the second end head fixing member after being engaged with the sixth chain gear.

[0049] Further, the detection assembly is arranged between the middle base plate and the lower base plate.

[0050] The detection assembly comprises at least three first photoelectric switches arranged at the top of the lower base plate, a position probe arranged at the bottom of the middle base plate, two second photoelectric switches arranged at the top of the lower base plate, a position identification strip arranged at the bottom of the middle base plate, and a main control module.

[0051] The main control module is electrically connected with the motor, the first photoelectric switches and the second photoelectric switches.

[0052] The first photoelectric switches and the second photoelectric switches are adapted to detect the position information of the position probe and the position identification strip respectively and upload the position information to the main control module, and the main control module controls the motor to start and stop according to the position information uploaded by the first photoelectric switches and the second photoelectric switches.

[0053] Further, the middle plate assembly further comprises two left-right staggered opposite limiting position blocks arranged at the bottom of the middle base plate.

[0054] One of the limiting position blocks is adapted to be in contact with the first sprocket support when the middle base plate is reset.

[0055] The other limiting position block is adapted to be in contact with the third sprocket support when the middle base plate moves to the maximum distance.

[0056] The beneficial effects of the utility model are as follows:

[0057] When the motor starts, the output shaft drives the first chain gear to rotate, and the rotation of the first chain gear drives the first chain to move. Since the first end and the last end of the first chain are connected to the bottom of the middle base plate, the movement of the first chain will drive the middle base plate to slide on the two first supporting plates, realizing the telescopic movement of the forks, so that the effects of simple structure, compactness, low manufacturing cost, stable operation and convenient maintenance are achieved, the problems of complex gear and rack transmission structure and high manufacturing cost are solved, and the problems of large size, high energy consumption and easy leakage of the hydraulic drive system are solved, and the stability and operation efficiency of the warehouse system are improved.

[0058] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims.

[0059] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0060] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0061] Figure 1 is an exploded view of the lower plate assembly and the middle plate assembly of the preferred embodiment of the present application;

[0062] Figure 2 is a perspective view of the lower plate assembly of the preferred embodiment of the present application Figure 1 ;

[0063] Figure 3 is a perspective view of the first avoiding part of the preferred embodiment of the present application;

[0064] Figure 4 is a side view of the preferred embodiment of the lower plate assembly and the middle plate assembly of the present application;

[0065] Figure 5 is an exploded view of the middle plate assembly and the upper plate assembly of the preferred embodiment of the present application;

[0066] Figure 6 is a side view of the preferred embodiment of the whole of the present application;

[0067] Figure 7 is a sectional perspective view of the preferred embodiment of the whole of the utility model Figure 1 ;

[0068] Figure 8 is a sectional perspective view of the preferred embodiment of the whole of the utility model Figure 2 ;

[0069] Figure 9 is a perspective view of the preferred embodiment of the lower plate assembly of the utility model Figure 2 ;

[0070] Figure 10 is a perspective view of the preferred embodiment of the middle plate assembly of the utility model Figure 1 ;

[0071] Figure 11 is a perspective view of the preferred embodiment of the middle plate assembly of the utility model Figure 2 ;

[0072] Figure 12 is a perspective view of the preferred embodiment of the middle plate assembly of the utility model Figure 3 ;

[0073] Figure 13 is a perspective view of the preferred embodiment of the upper plate assembly of the utility model;

[0074] Figure 14 is a perspective view of the preferred embodiment of the whole initial state of the utility model;

[0075] Figure 15 is a perspective view of the preferred embodiment of the whole extended state of the utility model.

[0076] In the drawings:

[0077] Lower plate assembly 1, lower base plate 11, first avoiding part 111, first support plate 12, support piece 13, third chain gear 14, first support roller 15, first roller support 16, first positioning roller 17;

[0078] Middle plate assembly 2, middle base plate 21, second avoiding part 211, third avoiding part 212, T-shaped guide rail 22, limit positioning block 23;

[0079] Drive assembly 3, mounting plate 31, motor 32, speed reducer 33;

[0080] First transmission assembly 4, first chain gear 41, chain wheel seat 42, second chain gear 43, first chain 44, chain connecting piece 45;

[0081] Upper plate assembly 5, upper base plate 51, second support plate 52, second support roller 53, second roller support 54, second positioning roller 55;

[0082] Second transmission assembly 6, first end fixing part 61, first sprocket bracket 62, fourth sprocket 63, second sprocket bracket 64, fifth sprocket 65, first fixing head 66, first tightening screw 67, second chain 68;

[0083] Third transmission assembly 7, second end fixing part 71, third sprocket bracket 72, sixth sprocket 73, fourth sprocket bracket 74, seventh sprocket 75, second fixing head 76, second tightening screw 77, third chain 78;

[0084] Detection component 8, first photoelectric switch 81, position probe 82, second photoelectric switch 83, position identification strip 84. Detailed Implementation

[0085] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Example 1

[0086] like Figures 1 to 15 As shown, this embodiment provides a chain-driven forklift for use in an automated warehouse, comprising:

[0087] The lower plate assembly 1 includes: a lower base plate 11 and first support plates 12 symmetrically arranged on the top of both sides of the lower base plate 11; the middle plate assembly 2 includes: a middle base plate 21 disposed above the two first support plates 12; wherein the bottom of the middle base plate 21 is slidably connected to the two first support plates 12; the drive assembly 3 includes: a mounting plate 31 disposed at one end of the lower base plate 11 and a motor 32 fixed on the mounting plate 31; the first transmission assembly 4 includes: a first sprocket 41 connected to the output shaft of the motor 32, a sprocket seat 42 disposed at the other end of the lower base plate 11, a second sprocket 43 connected to the sprocket seat 42, and sprocket teeth wound around the first sprocket 41 and the second sprocket. A first chain 44 on wheel 43; wherein the first chain 44 is connected at its beginning and end to the bottom of the middle base plate 21; the motor 32 is adapted to drive the first sprocket 41 to rotate when started, the first sprocket 41 drives the first chain 44 to move, and the first chain 44 drives the middle base plate 21 to move, so that the middle base plate 21 slides on the lower base plate 11; wherein the middle base plate 21 is slidably connected to two first support plates 12 to achieve telescopic movement; wherein the sprocket seat 42 is provided to support the second sprocket 43; wherein the first sprocket 41 and the second sprocket 43 are provided to support and jointly drive the first chain 44 to move.

[0088] In the embodiment, when the motor 32 starts, the output shaft drives the first chain gear 41 to rotate, the rotation of the first chain gear 41 drives the first chain 44 to move, since the first end and the last end of the first chain 44 are connected with the bottom of the middle base plate 21, the movement of the first chain 44 drives the middle base plate 21 to slide on the two first support plates 12, realizing the telescopic movement of the forks, so that the effects of simple and compact structure, low manufacturing cost, stable operation and convenient maintenance are achieved, the problems of complex gear and rack transmission structure and high manufacturing cost are solved, and the problems of large size, high energy consumption and easy leakage of the hydraulic drive system are solved, and the effects of improving the stability and operation efficiency of the warehouse system are achieved.

[0089] One end of the lower base plate 11 is provided with a first avoiding part 111; the mounting plate 31 is arranged on the inner side of the first avoiding part 111; and the first chain gear 41 is located below the first avoiding part 111; the lower plate assembly 1 further comprises a support 13 arranged on the top of the lower base plate 11 and two third chain gears 14 connected with the mounting plate 31 and the support 13; the support 13 is located above the other side of the first avoiding part 111; the two third chain gears 14 are located above the first avoiding part 111; the first avoiding part 111 is adapted to avoid the first chain 44; and the first chain 44 is engaged with the third chain gears 14 located on the outer side, the first chain gear 41, the third chain gears 14 located on the inner side and the second chain gear 43 in sequence, and the first chain 44 is in a horizontal L shape; by arranging the first avoiding part 111, installation space is provided for the mounting plate 31, and the first chain 44 is avoided to prevent interference with other components; by arranging the support 13 and the mounting plate 31, stable support is provided for the third chain gears 14; by arranging the two third chain gears 14, the stability of the first chain 44 is enhanced, and the transmission path of the first chain 44 is more reasonable and efficient.

[0090] The first transmission assembly 4 further comprises a chain connecting piece 45 arranged on the bottom of the middle base plate 21; the two ends of the chain connecting piece 45 are connected with the two ends of the first chain 44 respectively; by arranging the chain connecting piece 45, the stability of the transmission is enhanced, and the transmission stability is enhanced.

[0091] The lower plate assembly 1 further comprises: a plurality of first support rollers 15 symmetrically arranged inside the two first support plates 12, a plurality of first roller supports 16 symmetrically arranged inside the two first support plates 12, and a first positioning roller 17 arranged on the first roller support 16; wherein each first roller support 16 is arranged between the corresponding two first support rollers 15; the middle plate assembly 2 further comprises: T-shaped guide rails 22 symmetrically arranged on the top of the middle base plate 21; wherein the outer bottom of the two T-shaped guide rails 22 in the horizontal direction is in contact with the corresponding first support roller 15; the outer side of the two T-shaped guide rails 22 in the vertical direction is in contact with the corresponding first positioning roller 17; wherein by arranging a plurality of symmetrically arranged first support rollers 15 and T-shaped guide rails 22, a stable support is provided for the sliding of the T-shaped guide rails 22 on the middle base plate 21, and the frictional resistance is reduced, ensuring smooth sliding; wherein by arranging the first positioning roller 17 on the first roller support 16, and the first positioning roller 17 is in contact with the outer side of the T-shaped guide rail 22 in the vertical direction, the effect of precise positioning and guiding is achieved, ensuring the accuracy and stability of the middle base plate 21 during sliding.

[0092] The drive assembly 3 further comprises: a speed reducer 33 arranged on one side of the mounting plate 31; wherein the motor 32 is arranged on one side of the speed reducer 33, and the output shaft of the motor 32 is connected with the speed reducer 33; and the first chain gear 41 is connected with the output shaft of the speed reducer 33; the motor 32 is adapted to drive the first chain gear 41 to rotate through the speed reducer 33; wherein by arranging the speed reducer 33, the torque output of the motor 32 is enhanced and the rotating speed is reduced.

[0093] The top of the two T-shaped guide rails 22 is provided with an upper plate assembly 5; wherein the upper plate assembly 5 comprises: an upper base plate 51 above the two T-shaped guide rails 22, second support plates 52 symmetrically arranged at the bottom of the upper base plate 51, second support rollers 53 symmetrically arranged outside the two second support plates 52, at least two second roller supports 54 symmetrically arranged outside the two second support plates 52, and second positioning rollers 55 arranged on the second roller supports 54; wherein each second roller support 54 is arranged between the corresponding two second support rollers 53 at both ends; the inner side of the two T-shaped guide rails 22 in the vertical direction is in contact with the corresponding second positioning roller 55; each second support roller 53 is adapted to roll on the middle base plate 21; and the inner bottom of the two T-shaped guide rails 22 in the horizontal direction is adapted to limit the top of the corresponding second support roller 53; wherein the top of the upper base plate 51 is provided with a silica gel layer to enhance the friction between the goods and the upper base plate 51, to prevent the goods from sliding off the upper base plate 51; wherein by arranging each second support roller 53, the effect of ensuring smooth sliding of the upper plate assembly 5 relative to the middle plate assembly 2 is achieved; wherein by arranging the second positioning roller 55, the effect of providing precise positioning and guiding for the upper plate assembly 5 is achieved.

[0094] The second transmission assembly 6 is arranged between the lower plate assembly 1, the middle plate assembly 2 and the upper plate assembly 5; one end of the middle base plate 21 is provided with a second avoiding part 211; the second transmission assembly 6 comprises a first end head fixing part 61 arranged at the bottom of the middle base plate 21, a first sprocket support 62 arranged at the top of the lower base plate 11, a fourth chain gear 63 connected with the first sprocket support 62, a second sprocket support 64 arranged in the second avoiding part 211, a fifth chain gear 65 connected with the second sprocket support 64, a first fixing head 66 arranged at the bottom of the upper base plate 51, a first tightening screw 67 engaged with the first fixing head 66 and a second chain 68 connected with the first tightening screw 67; wherein the second chain 68 is adapted to engage with the fifth chain gear 65, pass through the second avoiding part 211 and engage with the fourth chain gear 63 to be connected with the first end head fixing part 61; wherein the second avoiding part 211 is arranged to provide installation space for the second sprocket support 64 and avoid the second chain 68; wherein the first end head fixing part 61 is arranged to facilitate the connection between the second chain 68 and the middle base plate 21; wherein the first sprocket support 62 and the second sprocket support 64 are arranged to provide support for the fourth chain gear 63 and the fifth chain gear 65; wherein the fourth chain gear 63 and the fifth chain gear 65 are arranged to engage with the second chain 68 and facilitate the movement of the second chain 68; wherein the first fixing head 66 and the first tightening screw 67 are engaged, and the first tightening screw 67 is connected with the second chain 68 to adjust the tension of the second chain 68.

[0095] The third transmission assembly 7 is arranged between the lower plate assembly 1, the middle plate assembly 2 and the upper plate assembly 5; the other end of the middle base plate 21 is provided with a third avoiding part 212; the third transmission assembly 7 comprises a second end head fixing part 71 arranged at the bottom of the middle base plate 21, a third sprocket support 72 arranged at the top of the lower base plate 11, a sixth chain gear 73 connected with the third sprocket support 72, a fourth sprocket support 74 arranged in the third avoiding part 212, a seventh chain gear 75 connected with the fourth sprocket support 74, a second fixing head 76 arranged at the bottom of the upper base plate 51, a second tightening screw 77 engaged with the second fixing head 76 and a third chain 78 connected with the second tightening screw 77; the third chain 78 is adapted to engage with the seventh chain gear 75, pass through the third avoiding part 212 and engage with the sixth chain gear 73 to be connected with the second end head fixing part 71; the third avoiding part 212 is arranged to provide installation space for the fourth sprocket support 74 and avoid the third chain 78; the second end head fixing part 71 is arranged to facilitate the connection of the third chain 78 with the middle base plate 21; the third sprocket support 72 and the fourth sprocket support 74 are arranged to provide support for the fourth chain gear 63 and the fifth chain gear 65; the sixth chain gear 73 and the seventh chain gear 75 are arranged to engage with the third chain 78 and facilitate the movement of the third chain 78; the second fixing head 76 and the second tightening screw 77 are engaged, and the second tightening screw 77 is connected with the third chain 78 to adjust the tension of the third chain 78.

[0096] In the embodiment, the second transmission assembly 6 and the third transmission assembly 7 are arranged in left-right staggered orientation to facilitate the smooth movement of the upper base plate 51 when the middle base plate 21 moves, avoiding shaking or deviation caused by unilateral stress, and the principle is as follows:

[0097] When the middle base plate 21 is extended, the second transmission assembly 6 works, the middle base plate 21 drives the second chain 68 to move through the first end head fixing part 61, the second chain 68 changes the power direction through the engagement of the fourth chain gear 63 and the fifth chain gear 65 to transmit the power to the first tightening screw 67 at the other end of the second chain 68, the first tightening screw 67 pulls the upper base plate 51 to move through the first fixing head 66, and the upper base plate 51 rolls on the middle base plate 21 through the second support roller 53 on the second support plate 52 to extend synchronously with the middle base plate 21;

[0098] When the middle substrate 21 retracts, the third transmission assembly 7 works, the middle substrate 21 moves the third chain 78 through the second end head fixing piece 71, the third chain 78 changes the power direction of the third chain 78 through the meshing action of the sixth chain gear 73 and the seventh chain gear 75, so as to transmit the power to the second tightening screw 77 at the other end of the third chain 78, the second tightening screw 77 moves the upper substrate 51 through the second fixed head 76, the upper substrate 51 rolls on the middle substrate 21 through the second support roller 53 on the second support plate 52, so as to retract synchronously with the middle substrate 21;

[0099] Since the second chain 68 and the third chain 78 are connected with the upper substrate 51, when the second transmission assembly 6 works or the third transmission assembly 7 works, the upper substrate 51 moves to pull the second chain 68 or the third chain 78, so as to keep that whether the upper substrate 51 extends or retracts, the second transmission assembly 6 and the third transmission assembly 7 are not affected.

[0100] The detection assembly 8 is arranged between the middle substrate 21 and the lower substrate 11; the detection assembly 8 comprises at least three first photoelectric switches 81 arranged on the top of the lower substrate 11, a position probe 82 arranged on the bottom of the middle substrate 21, two second photoelectric switches 83 arranged on the top of the lower substrate 11, a position recognition strip 84 arranged on the bottom of the middle substrate 21, and a main control module; wherein the main control module is electrically connected with the motor 32, each first photoelectric switch 81 and each second photoelectric switch 83; each first photoelectric switch 81 and each second photoelectric switch 83 are adapted to detect the position information of the position probe 82 and the position recognition strip 84 respectively and upload to the main control module, and the main control module controls the motor 32 to start and stop according to the position information uploaded by each first photoelectric switch 81 and each second photoelectric switch 83; wherein the first photoelectric switch 81 and the second photoelectric switch 83 adopt but are not limited to the reflection type; wherein the main control module adopts but is not limited to PLC; wherein the motor 32 adopts but is not limited to a servo motor; wherein the first photoelectric switch 81 is preferably arranged in three, which cooperates with the position probe 82 to detect the initial position, the middle position and the end position of the middle substrate 21; two second photoelectric switches 83 and the position recognition strip 84 are arranged to detect the full position of the middle substrate 21; the first photoelectric switch 81 and the second photoelectric switch 83 are arranged to achieve accurate control of the position of the middle substrate 21.

[0101] The middle plate assembly 2 further comprises two left and right opposite setting limit blocks 23 arranged on the bottom of the middle base plate 21, one of the limit blocks 23 is adapted to contact with the first sprocket support 62 when the middle base plate 21 is reset, and the other limit block 23 is adapted to contact with the third sprocket support 72 when the middle base plate 21 moves to the maximum distance, wherein the limit blocks 23 are arranged to limit the moving track of the middle base plate 21 and prevent the middle base plate 21 from exceeding the predetermined moving range.

[0102] Each device (parts without specific structure) selected in the application is a general standard part or a part known to those skilled in the art, and its structure and principle can be known by technical personnel through a technical manual or through a conventional experimental method.

[0103] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0104] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0105] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A chain-driven fork for a warehouse, characterized by, The utility model relates to a chain drive fork for stereoscopic warehouse, which comprises a lower plate assembly (1), a middle plate assembly (2) and a drive assembly (3). The lower plate assembly (1) comprises a lower base plate (11) and two first support plates (12) symmetrically arranged on the top of the two sides of the lower base plate (11); The middle plate assembly (2) comprises a middle base plate (21) arranged above the two first support plates (12); wherein The bottom of the middle base plate (21) is in sliding connection with the two first support plates (12); The drive assembly (3) comprises a mounting plate (31) arranged at one end of the lower base plate (11) and a motor (32) fixed on the mounting plate (31); The first transmission assembly (4) comprises a first chain gear (41) connected with the output shaft of the motor (32), a sprocket seat (42) arranged on the other end of the lower base plate (11), a second chain gear (43) connected with the sprocket seat (42) and a first chain (44) wound around the first chain gear (41) and the second chain gear (43); wherein The first chain (44) is connected with the bottom of the middle base plate (21) at the first end and the tail end; The motor (32) is adapted to drive the first chain gear (41) to rotate when started, the first chain gear (41) drives the first chain (44) to move, and the first chain (44) drives the middle base plate (21) to move, so that the middle base plate (21) slides on the lower base plate (11).

2. The chain drive fork for stereoscopic warehouse according to claim 1, wherein One end of the lower base plate (11) is provided with a first avoiding part (111); wherein The mounting plate (31) is arranged on the inner side of the first avoiding part (111); and The first chain gear (41) is located below the first avoiding part (111); The lower plate assembly (1) further comprises a support piece (13) arranged on the top of the lower base plate (11), and two third chain gears (14) connected with the mounting plate (31) and the support piece (13); wherein The support piece (13) is located above the other side of the first avoiding part (111); The two third chain gears (14) are located above the first avoiding part (111); The first avoiding part (111) is adapted to avoid the first chain (44); and The first chain (44) is in engagement with the third chain gear (14) located on the outer side, the first chain gear (41), the third chain gear (14) located on the inner side and the second chain gear (43) in sequence, and the first chain (44) is in L shape horizontally.

3. The chain drive fork for stereoscopic warehouse according to claim 2, wherein The first transmission assembly (4) further comprises a chain connecting piece (45) arranged on the bottom of the middle base plate (21); wherein The two ends of the chain connecting piece (45) are respectively connected with the two ends of the first chain (44).

4. The chain drive fork for stereoscopic warehouse according to claim 3, wherein The lower plate assembly (1) further comprises a plurality of first support rollers (15) symmetrically arranged on the inner sides of the two first support plates (12), a plurality of first roller supports (16) symmetrically arranged on the inner sides of the two first support plates (12) and first positioning rollers (17) arranged on the first roller supports (16); wherein Each of the first roller supports (16) is arranged between two corresponding first supporting rollers (15); The middle plate assembly (2) further comprises: T-shaped guide rails (22) symmetrically arranged on the top of the middle base plate (21); wherein The outer bottom of the T-shaped guide rails (22) in the horizontal direction is in contact with the corresponding first supporting rollers (15); The outer side of the T-shaped guide rails (22) in the vertical direction is in contact with the corresponding first positioning rollers (17).

5. The chain-driven fork for a stereoscopic warehouse according to claim 4, wherein The drive assembly (3) further comprises: a speed reducer (33) arranged on one side of the mounting plate (31); wherein The motor (32) is arranged on one side of the speed reducer (33), and the output shaft of the motor (32) is connected with the speed reducer (33); and The first chain gear (41) is connected with the output shaft of the speed reducer (33); The motor (32) is adapted to drive the first chain gear (41) to rotate through the speed reducer (33).

6. The chain-driven fork for a stereoscopic warehouse according to claim 5, wherein The top of the T-shaped guide rails (22) is provided with an upper plate assembly (5); wherein The upper plate assembly (5) comprises: an upper base plate (51) above the T-shaped guide rails (22), second supporting plates (52) symmetrically arranged on the bottom of the upper base plate (51), second supporting rollers (53) symmetrically arranged on the outer side of the second supporting plates (52), at least two second roller supports (54) symmetrically arranged on the outer side of the second supporting plates (52), and second positioning rollers (55) arranged on the second roller supports (54); wherein Each of the second roller supports (54) is arranged between two corresponding second supporting rollers (53) at the two ends; The inner side of the T-shaped guide rails (22) in the vertical direction is in contact with the corresponding second positioning rollers (55); Each of the second supporting rollers (53) is adapted to roll on the middle base plate (21); and The inner bottom of the T-shaped guide rails (22) in the horizontal direction is adapted to limit the top of the corresponding second supporting rollers (53).

7. The chain-driven fork for a stereoscopic warehouse according to claim 6, wherein A second drive assembly (6) is arranged between the lower plate assembly (1), the middle plate assembly (2) and the upper plate assembly (5); One end of the middle base plate (21) is provided with a second avoiding part (211); The second drive assembly (6) comprises: a first end fixing part (61) arranged on the bottom of the middle base plate (21), a first sprocket support (62) arranged on the top of the lower base plate (11), a fourth chain gear (63) connected with the first sprocket support (62), a second sprocket support (64) arranged in the second avoiding part (211), a fifth chain gear (65) connected with the second sprocket support (64), a first fixing head (66) arranged on the bottom of the upper base plate (51), a first tightening screw (67) engaged with the first fixing head (66), and a second chain (68) connected with the first tightening screw (67); wherein The second chain (68) is adapted to pass through the second avoiding part (211) after engaging with the fifth sprocket (65), and is connected with the first end fixing part (61) after engaging with the fourth sprocket (63). 8.The chain-driven fork for stereoscopic warehouse according to claim 7, characterized in that, The third transmission assembly (7) is arranged between the lower plate assembly (1), the middle plate assembly (2) and the upper plate assembly (5); The other end of the middle base plate (21) is provided with a third avoiding part (212); The third transmission assembly (7) comprises a second end fixing part (71) arranged at the bottom of the middle base plate (21), a third sprocket support (72) arranged at the top of the lower base plate (11), a sixth sprocket (73) connected with the third sprocket support (72), a fourth sprocket support (74) arranged in the third avoiding part (212), a seventh sprocket (75) connected with the fourth sprocket support (74), a second fixing head (76) arranged at the bottom of the upper base plate (51), a second tightening screw (77) engaged with the second fixing head (76), and a third chain (78) connected with the second tightening screw (77); wherein The third chain (78) is adapted to pass through the third avoiding part (212) after engaging with the seventh sprocket (75), and is connected with the second end fixing part (71) after engaging with the sixth sprocket (73). 9.The chain-driven fork for stereoscopic warehouse according to claim 8, characterized in that, The detection assembly (8) is arranged between the middle base plate (21) and the lower base plate (11); The detection assembly (8) comprises at least three first photoelectric switches (81) arranged at the top of the lower base plate (11), a position probe (82) arranged at the bottom of the middle base plate (21), two second photoelectric switches (83) arranged at the top of the lower base plate (11), a position identification strip (84) arranged at the bottom of the middle base plate (21), and a main control module; wherein The main control module is electrically connected with the motor (32), the first photoelectric switches (81) and the second photoelectric switches (83); and Each of the first photoelectric switches (81) and the second photoelectric switches (83) is adapted to detect the position information of the position probe (82) and the position identification strip (84) respectively and upload the position information to the main control module, and the main control module controls the motor (32) to start and stop according to the position information uploaded by each of the first photoelectric switches (81) and the second photoelectric switches (83). 10.The chain-driven fork for stereoscopic warehouse according to claim 9, characterized in that, The middle plate assembly (2) further comprises two left and right offset opposite limiting position blocks (23) arranged at the bottom of the middle base plate (21); wherein One of the limiting position blocks (23) is adapted to contact the first sprocket support (62) when the middle base plate (21) is reset; and The other limiting position block (23) is adapted to contact the third sprocket support (72) when the middle base plate (21) moves to the maximum distance.

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