A coal floating and sinking experiment queue lifting device

Abstract

The present invention relates to the technical field of coal floating and sinking test, and discloses a coal floating and sinking test queuing and lifting device, including a lifting device, a conveying device and a synchronous lifting self-locking device. The lifting device includes a chassis assembly and a conveying chain assembly. The conveying chain assembly includes two chain groups, and a lifting channel for accommodating a coal tray is formed between the two chain groups; the chain group includes an upper drive shaft, a lower drive shaft, two conveying chains and a plurality of coal tray brackets, and the upper drive shaft and the lower drive shaft are rotatably mounted on the chassis assembly; a hanging ear is provided on the conveying chain; the coal tray bracket is fixed on the hanging ear; a lifting sprocket is fixed on the upper drive shaft and the lower drive shaft, and the conveying chain is wound around the upper drive shaft and the lower drive shaft; the conveying device corresponds to the lifting channel position; the synchronous lifting self-locking device drives the conveying chain to rotate in one direction. The device can automatically queue and lift coal trays of various density levels after weighing in the coal floating and sinking test, and has automatic lifting and reverse locking functions, which is conducive to marking and saving space.

Description

Technical Field

[0001] The invention relates to the technical field of coal floating and sinking tests, in particular to a coal floating and sinking test queue lifting device. Background Art

[0002] Coal floating and sinking test is an important indicator for testing coal quality. It is mainly based on the difference in density of coal particles for sorting. Coal floating and sinking test is a test that separates coal samples into different density levels with heavy liquids of different densities and measures the yield and characteristics of products of each density level. At present, there are few supporting equipment for coal floating and sinking test on the market. The sorted coal is placed in a coal tray without special storage equipment. The coal tray occupies a large area and is inconvenient to mark. Summary of the invention

[0003] The invention provides a coal floating and sinking experiment queue lifting device, which solves the technical problem that there is no special device for storing coal trays in the prior art.

[0004] The technical solution of the present invention is implemented as follows: a coal floating and sinking experiment queue lifting device, comprising a lifting device, the lifting device comprising

[0005] Chassis assembly,

[0006] and a conveying chain assembly, wherein the conveying chain assembly comprises two synchronously conveying chain groups, and a lifting channel for accommodating the coal tray is formed between the two chain groups; the chain group comprises

[0007] an upper drive shaft, the upper drive shaft being rotatably mounted on the chassis assembly;

[0008] a lower drive shaft, the lower drive shaft being rotatably mounted on the chassis assembly and being located directly below the upper drive shaft;

[0009] Two conveyor chains, each of which is provided with hanging ears;

[0010] and a plurality of coal tray supports, wherein two ends of the coal tray supports are respectively fixed to the hanging ears of the two conveying chains;

[0011] The upper drive shaft and the lower drive shaft are both fixed with lifting sprockets, and the conveying chain is wound around the two lifting sprockets located on the upper drive shaft and the lower drive shaft;

[0012] A conveying device, wherein the conveying device corresponds to the position of the lifting channel;

[0013] and a synchronous lifting self-locking device, wherein the synchronous lifting self-locking device drives the conveying chain to rotate in one direction.

[0014] As a preferred technical solution, the synchronous lifting self-locking device includes

[0015] A lifting device, the lifting device comprising

[0016] A box body, wherein the box body is fixed on the chassis assembly;

[0017] A long shaft, the long shaft is rotatably mounted on the box body, a first transmission gear is fixed to the middle of the long shaft, and one end of the long shaft is transmission-connected to a driving device;

[0018] and a short shaft, the short shaft being rotatably mounted on the box body, a second transmission gear being fixed to the middle of the short shaft, the first transmission gear being meshed with the second transmission gear;

[0019] The major shaft and the minor shaft drive the two chain groups respectively;

[0020] and a self-locking device, the self-locking device comprising

[0021] at least one ratchet, the ratchet being fixed on the major shaft or the minor shaft;

[0022] and a ratchet pawl, wherein the ratchet pawl is mounted on the box body and matches the ratchet wheel.

[0023] As a preferred technical solution, the box body includes a box body upper shell and a box body lower shell, the box body upper shell and the box body lower shell are connected by bolts and the box body upper shell and the box body lower shell form a self-locking cavity.

[0024] As a preferred technical solution, a driving sprocket is fixed on both the major shaft and the minor shaft, a transmission sprocket is fixed on the upper driving shaft, and the driving sprocket and the transmission sprocket are driven by a transmission chain.

[0025] As a preferred technical solution, the first transmission gear and the second transmission gear are the same.

[0026] As a preferred technical solution, the driving device includes a motor, and the motor is transmission-connected to the long shaft via a reducer.

[0027] As a preferred technical solution, ratchets are fixed on both the major axis and the minor axis, and two ratchet pawls are provided on the box body, and the two ratchet pawls correspond one-to-one to the two ratchets respectively.

[0028] As a preferred technical solution, one end of the conveying device is located at the lower side of the lifting channel.

[0029] As a preferred technical solution, the coal pan support includes a fixing portion, and a supporting portion for supporting the coal pan is provided on a side of the fixing portion facing the lifting passage.

[0030] As a preferred technical solution, the support portion and the fixing portion are connected to form an L-shape, a V-shape or a U-shape.

[0031] The beneficial effects of the present invention are that the coal floating and sinking test queuing and lifting device can automatically queue and lift coal pans of various density levels after the coal floating and sinking test is weighed, has automatic lifting and reverse locking functions, has a simple structure, is conducive to marking and saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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 labor.

[0033] Figure 1 It is a structural schematic diagram of the first viewing angle of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0035] Figure 3 It is a structural diagram of the synchronous lifting self-locking device;

[0036] Figure 4 It is a schematic diagram of the internal structure of the synchronous lifting self-locking device;

[0037] Figure 5 It is a cross-sectional view of the synchronous lifting self-locking device;

[0038] Figure 6 It is a structural schematic diagram of a first embodiment of a coal tray support;

[0039] Figure 7 It is a structural schematic diagram of a second embodiment of a coal tray support;

[0040] Figure 8 It is a structural schematic diagram of a third embodiment of a coal tray support;

[0041] Fig. 9 It is a structural schematic diagram of a fourth embodiment of a coal tray support;

[0042] Fig.10 It is a schematic structural diagram of the fifth embodiment of the coal tray support.

[0043] In the figure, 1- chassis assembly, 2- lower drive shaft, 3- lifting sprocket, 4- transmission chain, 5- coal tray bracket, 51- fixing part, 52- supporting part, 6- coal tray, 7- upper drive shaft, 8- synchronous lifting self-locking device, 81- lower shell of box body, 82- retaining ring for shaft, 83- upper shell of box body, 84- motor, 85- reducer, 86- ratchet, 87- spring, 88- ratchet pawl, 89- ratchet cover, 810- second transmission gear, 811- short shaft, 812- bearing, 813- bolt, 814- driving sprocket, 815- end cover screw, 816- end cover, 817- long shaft, 818- first transmission gear, 9- conveying system, 10- transmission sprocket, 11- transmission chain. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The description of these implementations is used to help understand the present invention, but does not constitute a limitation 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.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] A coal floating and sinking experiment queue lifting device, such as Figure 1 and Figure 2 As shown, it includes a lifting device, a conveying device 9 and a synchronous lifting self-locking device 8.

[0047] The lifting device comprises a base frame assembly 1 and a conveying chain assembly. The conveying chain assembly comprises two synchronously conveying chain groups. A lifting channel for accommodating a coal tray 6 is formed between the two chain groups.

[0048] The chain assembly includes an upper drive shaft 7 , a lower drive shaft 2 , two conveyor chains 4 and a plurality of coal tray supports 5 .

[0049] The upper drive shaft 7 and the lower drive shaft 2 are both rotatably mounted on the chassis assembly 1 through seat bearings, and the lower drive shaft 2 is located directly below the upper drive shaft 7. Two lifting sprockets 3 are fixed on the upper drive shaft 7 and the lower drive shaft 2, and the transmission chain 4 is wound around the two lifting sprockets 3 located on the upper drive shaft 7 and the lower drive shaft 2. The transmission chain 4 is vertically arranged, and preferably, the two transmission chains 4 are respectively adjacent to the two ends of the coal tray 6. The synchronous lifting of the two transmission chains 4 in the same side chain group can be achieved by rotating the upper drive shaft 7 or the lower drive shaft 2. Furthermore, the four lifting sprockets 3 are exactly the same, which is convenient for transmission design and control.

[0050] The conveying chain 4 is provided with a hanging ear, and the two ends of the coal tray bracket 5 are respectively fixed to the hanging ears of the two conveying chains 4 by bolts and other connecting parts. Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the coal tray support 5 includes a fixing portion 51, and a supporting portion 52 for supporting the coal tray 5 is provided on the side of the fixing portion 51 facing the lifting channel. Preferably, the supporting portion 52 is connected with the fixing portion 51 to form an L-shape, a V-shape or a U-shape. An outer boss is provided on the outer surface of the coal tray 6. When the coal tray support 5 moves with the conveying chain 4, the coal tray support 5 located on the opposite sides of the coal tray 6 is supported on the lower side of the outer boss of the coal tray 6 to support the coal tray 6.

[0051] The conveying device 9 corresponds to the position of the lifting channel; preferably, one end of the conveying device 9 is located at the lower side of the lifting channel. Figure 2 As shown, the conveying device 9 is a synchronous conveyor belt, but chain conveyor or roller conveyor can also be used.

[0052] The synchronous lifting self-locking device 8 drives the conveying chain 4 to rotate in one direction. Figure 3 , Figure 4 and Figure 5 As shown, the synchronous lifting self-locking device includes a lifting device and a self-locking device.

[0053] The lifting device includes a box body, a long shaft 817 and a short shaft 811 .

[0054] The box is fixed on the chassis assembly 1, and the box includes an upper box shell 83 and a lower box shell 81, which are connected by bolts 813, and the upper box shell 83 and the lower box shell 81 form a self-locking cavity. The long shaft 817 and the short shaft 811 are rotatably mounted on the box, and the short shaft 811 and the long shaft 817 are both matched and connected with the bearing 812, and the bearing 812 is pressed together by the lower box shell 81 and the upper box shell 83.

[0055] The long shaft 817 and the short shaft 811 are driven by gear meshing. A first transmission gear 818 is fixed to the middle of the long shaft 817, and a second transmission gear 810 is fixed to the middle of the short shaft 811. The first transmission gear 818 and the second transmission gear 810 are meshed.

[0056] Preferably, the first transmission gear 818 is identical to the second transmission gear 810. The first transmission gear 818 and the second transmission gear 810 are key-connected to the long shaft 817 and the short shaft 811, respectively, one end face of the gear is positioned by a shaft shoulder, and the other end face is limited by a shaft retaining ring 82.

[0057] The self-locking device includes at least one ratchet 86 and a ratchet pawl 88. The ratchet 86 is fixed on the long shaft 817 or the short shaft 811, and the ratchet pawl 88 is installed on the box body, and the ratchet pawl 88 matches the ratchet 86. Specifically, a mounting hole is provided on the upper shell 83 of the box body, and the ratchet pawl 88 extends from the mounting hole into the self-locking cavity. The outer end of the ratchet pawl 88 is sleeved with a spring 87, and the outer sides of the spring 87 and the ratchet pawl 88 are sleeved with a ratchet cover 89.

[0058] Optimally, ratchet wheels 86 are fixed on both the long shaft 817 and the short shaft 811 , and two ratchet pawls 88 are provided on the box body, and the two ratchet pawls 88 correspond to the two ratchet wheels 86 one by one.

[0059] Both ends of the long shaft 817 extend out of the self-locking cavity, and one end of the long shaft 817 is transmission-connected to a driving device; the driving device includes a motor 84, and the motor 84 is transmission-connected to the long shaft 817 via a reducer 85.

[0060] The long shaft 817 and the short shaft 811 are respectively connected to the two chain groups. One end of the short shaft 811 extends out of the self-locking cavity, and the ends of the long shaft 817 and the short shaft 811 extending out of the self-locking cavity are fixed with a driving sprocket 814. One end face of the driving sprocket 814 is positioned by a shaft shoulder, and the other end face is pressed and limited by an end cover 816, and the end cover 816 is pressed and fixed by an end cover screw 815. A driving sprocket 10 is fixed on the upper driving shaft 7, and the driving sprocket 814 and the driving sprocket 10 are driven by a driving chain 11.

[0061] When the motor 84 rotates, the power is transmitted to the reducer 85 and the long shaft 817, and the other end of the long shaft 817 directly transmits the power to the drive sprocket 814; at the same time, the long shaft 817 also transmits the power to the short shaft 811 through the gear set 810, and the short shaft 811 transmits the power to the drive sprocket 814 at its end, so that the synchronous reverse movement of the two drive sprockets 14 can be achieved. Driven by the transmission chain 11, the transmission sprockets 10 on the two upper drive shafts 7 rotate synchronously in the opposite direction, and the synchronous reverse rotation of the transmission sprockets 10 can achieve the synchronous lifting of the transmission chain 4.

[0062] When the coal tray 6 is transported from the conveying system 9 to the lifting channel, the four conveying chains 4 are lifted synchronously after the motor 810 is started, and the coal tray 6 with a convex edge is buckled on the coal tray bracket 5 and can also be lifted. In this way, the coal trays 6 of different density levels can be lifted one by one. Because the coal body floating and sinking experiment starts with the low-density level to pick up floating coal, the floating coal at the top of the device is the floating coal of the smallest density level, and the density levels increase in sequence downwards, realizing the automatic queuing function and self-locking function of the synchronous lifting of the coal tray 6, while saving the floor space of the laboratory.

[0063] Because the ratchet 86 is mounted on both the major axis 817 and the minor axis 811, the function of reverse locking of unidirectional motion can be realized, so even if the motor 810 suddenly loses power or fails, the coal tray 6 will not fall under the action of gravity.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal floating and sinking experiment queuing and lifting device, characterized by: include A lifting device, the lifting device comprising Chassis assembly, and a conveyor chain assembly, the conveyor chain assembly comprising two synchronously conveying chain groups, a lifting channel for accommodating the coal tray being formed between the two chain groups; The chain group includes an upper drive shaft, the upper drive shaft being rotatably mounted on the chassis assembly; a lower drive shaft, the lower drive shaft being rotatably mounted on the chassis assembly and being located directly below the upper drive shaft; Two conveyor chains, each of which is provided with hanging ears; and a plurality of coal tray supports, wherein two ends of the coal tray supports are respectively fixed to the hanging ears of the two conveying chains; The upper drive shaft and the lower drive shaft are both fixed with lifting sprockets, and the conveying chain is wound around the two lifting sprockets located on the upper drive shaft and the lower drive shaft; A conveying device, wherein the conveying device corresponds to the position of the lifting channel; and a synchronous lifting self-locking device, wherein the synchronous lifting self-locking device drives the conveying chain to rotate in one direction; The synchronous lifting self-locking device comprises A lifting device, the lifting device comprising A box body, the box body being fixed on the chassis assembly; A long shaft, the long shaft is rotatably mounted on the box body, a first transmission gear is fixed to the middle of the long shaft, and one end of the long shaft is transmission-connected to a driving device; and a short shaft, the short shaft being rotatably mounted on the box body, a second transmission gear being fixed to the middle of the short shaft, the first transmission gear being meshed with the second transmission gear; The major shaft and the minor shaft drive the two chain groups respectively; and a self-locking device, the self-locking device comprising at least one ratchet, the ratchet being fixed on the major shaft or the minor shaft; and a ratchet pawl, the ratchet pawl being mounted on the box body and matching the ratchet wheel; One end of the conveying device is located at the lower side of the lifting channel.

2. A coal floating and sinking experiment queuing and lifting device as claimed in claim 1, characterized in that: The box body comprises a box body upper shell and a box body lower shell, the box body upper shell and the box body lower shell are connected by bolts, and the box body upper shell and the box body lower shell form a self-locking cavity.

3. A coal floating and sinking experiment queuing and lifting device as claimed in claim 1, characterized in that: A driving sprocket is fixed on both the long shaft and the short shaft, a transmission sprocket is fixed on the upper driving shaft, and the driving sprocket and the transmission sprocket are driven by a transmission chain.

4. A coal floating and sinking experiment queuing and lifting device as claimed in claim 1, characterized in that: The first transmission gear and the second transmission gear are identical.

5. A coal floating and sinking experiment queuing and lifting device as claimed in claim 1, characterized in that: The driving device comprises a motor, and the motor is transmission-connected to the long shaft via a reducer.

6. A coal floating and sinking experiment queuing and lifting device as claimed in claim 1, characterized in that: Ratchets are fixed on the long shaft and the short shaft, and two ratchet claws are arranged on the box body. The two ratchet claws correspond to the two ratchets one by one respectively.

7. A coal floating and sinking experiment queuing and lifting device as claimed in claim 1, characterized in that: The coal tray support comprises a fixing portion, and a supporting portion for supporting the coal tray is provided on a side of the fixing portion facing the lifting channel.

8. A coal floating and sinking experiment queuing and lifting device as claimed in claim 7, characterized in that: The supporting portion is connected with the fixing portion to form an L-shape, a V-shape or a U-shape.

Images