Interlayer elevator for chain lifting

Abstract

The utility model provides a chain lifting interlayer elevator, which belongs to the technical field of elevators, and comprises a guide wheel, a slide block, a cargo carrying platform, a stand column, a speed reducer, a chain transmission structure and a lifting loop, the guide wheel is arranged at the bottom of the stand column, and the cargo carrying platform is arranged along the stand column in an up-and-down sliding manner through the slide block; the chain transmission structure comprises a transmission shaft, a driving chain wheel, a first chain wheel, a first chain and a tensioning chain wheel, the transmission shaft is arranged on the upper portion of the stand column, the driving chain wheel is connected with an output shaft of the speed reducer, the first chain wheel is arranged on the transmission shaft, and the first chain is wound around the first chain wheel and the driving chain wheel; one end of the second chain upwards bypasses the second chain wheel, the other end of the second chain is connected with the third chain, one end of the third chain downwards bypasses the guide wheel, and the other end of the third chain is connected to the sliding block; a mechanical structure is adopted for lifting, and the risks of oil leakage, sedimentation and the like of hydraulic lifting are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist, concretely relates to an interlayer hoist of chain hoist. BACKGROUND

[0002] The interlayer hoist is a vertical conveying equipment widely used in pharmaceutical, chemical, food and other industries, and is mainly used for efficient conveying of solid materials and hoppers between floors. The common lifting methods at present mainly include hydraulic lifting and steel wire rope lifting, but these two methods have some technical defects.

[0003] The hydraulic lifting has the risk of oil leakage pollution and load platform subsidence, and is difficult to meet the requirements of high sanitary standards; the steel wire rope lifting has a large top structure and many sanitary dead angles, resulting in limited cleaning and space utilization. Therefore, it is urgent to design an interlayer hoist with compact structure, high reliability and high cleanliness. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies of the prior art, and provides an interlayer hoist of chain hoist.

[0005] The technical scheme adopted by the utility model is as follows: the application provides an interlayer hoist of chain hoist, which comprises a control box, a guide wheel, a sliding block, a load platform, a stand, a speed reducer, a chain transmission structure and a lifting loop, the guide wheel is arranged at the bottom of the stand, the load platform is arranged to slide up and down along the stand through the sliding block, the chain transmission structure comprises a transmission shaft, a driving sprocket, a first sprocket, a first chain and a tension sprocket, the transmission shaft is arranged on the upper part of the stand, the driving sprocket is connected with the output shaft of the speed reducer, the first sprocket is arranged on the transmission shaft, the first chain is wound on the first sprocket and the driving sprocket, and the lifting loop comprises a second chain, a third chain and a second sprocket, the second sprocket is arranged on the transmission shaft, one end of the second chain is wound upwards through the second sprocket, and the other end of the second chain is connected with the third chain, one end of the third chain is wound downwards through the guide wheel, and the other end of the third chain is connected to the sliding block.

[0006] In some embodiments, a safety lock is arranged on the stand, and when the load platform is lifted to a certain height, the lock block of the safety lock pops up and blocks below the load platform.

[0007] In some embodiments, the anti-falling system further comprises a chain connecting plate, a long screw rod, a short connecting plate, a locking plate, a fixed pin shaft and a spring pressing assembly, the chain connecting plate is connected with the second chain, one end of the long screw rod is connected with the chain connecting plate, the other end is connected with the short connecting plate, the fixed pin shaft is arranged on the sliding block, the locking plate is rotationally arranged on the fixed pin shaft, the spring pressing assembly comprises a fixed rod hinged to the sliding block and a first spring sleeved on the fixed rod, one side of the locking plate close to the fixed rod is provided with a positioning hole, the first spring is pressed between the positioning hole and the fixed rod, and the front end of the stand is provided with an anti-falling hole matched with the locking plate in a spaced manner.

[0008] In a normal working state, the tension of the second chain is transmitted through the chain connecting plate, the long screw rod and the short connecting plate, so that the tail of the locking plate rotates towards the center direction of the sliding block and compresses the first spring, and at this time, the locking plate is located outside the anti-falling hole;

[0009] When the second chain is broken accidentally, the tail of the locking plate is embedded in the anti-falling hole under the action of the first spring.

[0010] In some embodiments, the chain tensioning mechanism further comprises a tensioning fixed seat, a guide rod and a chain connecting assembly, the tensioning fixed seat is arranged on the sliding block and is provided with a second spring therein, the guide rod is slidingly arranged in the tensioning fixed seat, the second spring is pressed between the guide rod and the tensioning fixed seat, and the chain connecting assembly is used to connect the guide rod and the third chain.

[0011] In some embodiments, the chain tensioning mechanism further comprises a detection switch and a detection piece, the detection piece is arranged on the guide rod and comprises an upper detection end and a lower detection end, and the detection switch is located on the moving path of the guide rod, when the lower detection end is detected by the detection switch, it is necessary to stop and replace the second chain, and when the upper detection end is detected by the detection switch, it is necessary to stop and remove the obstacle.

[0012] In some embodiments, the installation plate is further provided, the installation plate is vertically provided with an adjusting hole, the stand is provided with a plurality of fixed holes in a spaced manner along the height direction thereof, and the detection switch is arranged on the stand through the installation plate.

[0013] In some embodiments, the chain connecting assembly comprises a fixed plate arranged at the top of the guide rod and a connecting rod arranged on the fixed plate, the connecting rod comprises a screw rod portion and a connecting portion, the screw rod portion is provided with a fixed nut on both sides of the fixed plate, and the connecting portion is connected with the third chain.

[0014] In some embodiments, the two sides of the front end of the column are staggered with anti-falling holes, the long screw rod, the short connecting plate, the lock plate, the fixing pin shaft and the spring pressing assembly are two, and the two long screw rods are symmetrically arranged on the two sides of the chain connecting plate.

[0015] In some embodiments, the second chain has a larger specification than the third chain.

[0016] In some embodiments, the first chain wheel and the second chain wheel are the same size.

[0017] The utility model discloses the beneficial effect is as follows: 1. The utility model discloses the mechanical structure is promoted, and there is no hydraulic pressure lifting oil leakage, settlement and other risks.

[0018] 2. The utility model discloses simple structure modularization, has expandability, and the same structure is suitable for the floor promotion of different height, and only the length of chain is increased or decreased that needs to be changed. DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings obtained according to these drawings without creative labor still belong to the scope of the utility model.

[0020] Figure 1 It is a schematic view of the interlayer hoist of the chain lifting in the utility model;

[0021] Figure 2 It is a partial schematic view of the interlayer hoist of the chain lifting in the utility model Figure One ;

[0022] Figure 3 It is a partial schematic view of the interlayer hoist of the chain lifting in the utility model Figure Two ;

[0023] Figure 4 It is a partial schematic view of the interlayer hoist of the chain lifting in the utility model Figure Three ;

[0024] Figure 5 It is a partial schematic view of the interlayer hoist of the chain lifting in the utility model Figure Four ;

[0025] Figure 6 It is Figure 4 the enlarged view of A in the utility model. DETAILED DESCRIPTION

[0026] The following description provides specific applications and requirements of the present specification, in order to enable a person skilled in the art to manufacture and use the contents of the present specification. Various local modifications of the disclosed embodiments are obvious to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the present specification. Therefore, the present specification is not limited to the embodiments shown, but is consistent with the widest scope of the claims.

[0027] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and these terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Secondly, the terms "first", "second" and similar words do not represent any order, quantity or importance, but are only used to distinguish different components, and should not be understood as a limitation on the embodiments of the present application.

[0029] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two devices, elements or components.

[0030] For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] With regard to the drawings of the present application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only, and are not intended to limit the scope of the present specification. It should also be understood that the drawings are not drawn to scale.

[0032] The interlayer elevator is used for vertical conveying in the pharmaceutical, chemical and food industries. In the prior art, the elevator is mostly hydraulic and steel wire rope lifting, so there are problems of hydraulic oil leakage and sedimentation, large structure of steel wire rope and sanitary dead angle.

[0033] Based on the above problems, such as Figures 1 to 6As shown, the inter-floor lifting machine of the chain lifting in the specification comprises a control box 1, a guide wheel 2, a sliding block 3, a cargo platform 4, a stand column 5, a speed reducer 6, a chain transmission structure and a lifting loop, the guide wheel 2 is arranged at the bottom of the stand column 5, the cargo platform 4 is arranged to slide up and down along the stand column 5 through the sliding block 3, the chain transmission structure comprises a transmission shaft 7, a driving sprocket 8, a first sprocket 9, a first chain 10 and a tension sprocket 11, the transmission shaft 7 is arranged at the upper part of the stand column 5, the driving sprocket 8 is connected with the output shaft of the speed reducer 6, the first sprocket 9 is arranged on the transmission shaft 7, the first chain 10 is arranged around the first sprocket 9 and the driving sprocket 8, the lifting loop comprises a second chain 12, a third chain 13 and a second sprocket 14, the second sprocket 14 is arranged on the transmission shaft 7, one end of the second chain 12 is arranged to pass through the second sprocket 14 upwards, and the other end is connected with the third chain 13, one end of the third chain 13 is arranged to pass through the guide wheel 2 downwards, and the other end is connected with the sliding block 3, wherein, when lifting, the speed reducer 6 drives the driving sprocket 8 to rotate counterclockwise, thereby driving the first sprocket 9 and the second sprocket 14 to rotate counterclockwise, the second sprocket 14 drives the second chain 12 to pull the sliding block 3 and the cargo platform 4 to rise to the second floor. When descending, the speed reducer 6 reverses, and the cargo platform 4 descends to the first floor. Generally, the speed reducer 6 is provided with a brake, when the speed reducer 6 stops working, the brake holds the speed reducer motor shaft, so that the first sprocket 9 and the second sprocket 14 cannot rotate clockwise due to gravity, causing the cargo platform 4 to slide down. At the same time, the speed reducer 6 is a worm structure, which can be self-locked, and when the brake does not work, it can also ensure that the cargo platform 4 will not slide down.

[0034] In this way, mechanical structure is adopted for lifting, and there is no risk of oil leakage and settlement in hydraulic lifting.

[0035] Secondly, the structure is simple and modular, and has expansibility. The same structure is suitable for lifting floors of different heights, and only the length of the chain needs to be changed.

[0036] In addition, the double-sprocket transmission system composed of the driving sprocket 8, the first sprocket 9 and the second sprocket 14, combined with the first chain 10 and the lifting loop, significantly reduces the occupation of external space through the closed-loop layout of the chain inside the stand column 5, compared with the traditional steel wire rope lifting machine, the equipment volume is reduced, and it is suitable for narrow industrial sites.

[0037] In some embodiments, a safety lock 15 is arranged on the stand column 5, and when the cargo platform 4 rises to a certain height, the lock block of the safety lock 15 pops up and blocks below the cargo platform 4, for example, when the cargo platform 4 stops at the second floor position, the safety lock 15 works, ensuring that the cargo platform 4 will not slide down, so the safety factor is high.

[0038] In some embodiments, a fall protection system is further included, which comprises a chain connecting plate 16 connected with the second chain 12, a long screw rod 17 connected with the chain connecting plate 16 at one end and connected with a short connecting plate 18 at the other end, a fixed pin shaft 20 arranged on the sliding block 3, a lock plate 19 rotatably arranged on the fixed pin shaft 20, specifically, the long screw rod 17 is hingedly connected with the short connecting plate 18, and the short connecting plate 18 is hingedly connected with the lock plate 19, and a spring pressing assembly comprising a fixed rod 21 hingedly connected with the sliding block 3 and a first spring 22 sleeved on the fixed rod 21, the lock plate 19 is provided with a positioning hole 23 on the side close to the fixed rod 21, the first spring 22 is pressed between the positioning hole 23 and the fixed rod 21, and the front end of the stand column 5 is provided with a fall prevention hole 24 matched with the lock plate 19; in a normal working state, the tension of the second chain 12 is transmitted through the chain connecting plate 16, the long screw rod 17 and the short connecting plate 18, so that the tail of the lock plate 19 rotates towards the center direction of the sliding block 3 and compresses the first spring 22, at this time, the lock plate 19 is located outside the fall prevention hole 24; when the second chain 12 is accidentally broken, the tail of the lock plate 19 is embedded in the fall prevention hole 24 under the action of the first spring 22, so as to prevent the cargo platform 4 from falling, and multiple point clamping is formed to effectively prevent the platform from falling.

[0039] In some embodiments, a chain tensioning mechanism is further included, which comprises a tensioning fixed seat 25 arranged on the sliding block 3 and provided with a second spring 27, a guide rod 26 slidingly arranged in the tensioning fixed seat 25, and a chain connecting assembly for connecting the guide rod 26 with the third chain 13, under the action of the second spring 27, the guide rod 26 tension the third chain 13 upwards, and the second spring 27 dynamically adjusts the tension of the third chain 13 through the guide rod 26, eliminates the slackening problem caused by chain wear and tear, and prolongs the service life of the chain.

[0040] In some embodiments, the chain tensioning mechanism further comprises a detection switch 28 and a detection piece 29, the detection piece 29 is arranged on the guide rod 26 and comprises an upper detection end 291 and a lower detection end 292, the detection switch 28 is located on the moving path of the guide rod 26, after a long period of operation, the total length of the loop composed of the second chain 12, the third chain 13 and the sliding block 3 will become longer, the guide rod 26 will slide upwards, and therefore the lower detection end 292 will be detected by the detection switch 28, at this time the second chain 12 is worn out and needs to be replaced, when the cargo platform 4 is stuck or there is an obstacle at the bottom thereof, the speed reducer 7 still drives the second sprocket 14 to rotate clockwise, the second sprocket 14 will be collapsed and pull the guide rod 26 to slide downwards, at this time the upper detection end 291 is detected by the detection switch 28, and the machine needs to be stopped to remove the obstruction. If this structure is not provided, in this case, the third chain 13 will be broken. Thus, fault prediction and maintenance guidance are achieved, and unplanned downtime is reduced.

[0041] In some embodiments, a mounting plate 30 is further included, the mounting plate 30 is vertically provided with an adjusting hole 31, a plurality of fixing holes are arranged on the upright column 5 along the height direction thereof, and the detection switch 28 is arranged on the upright column 5 through the mounting plate 30, so that the support height and position are flexibly adapted to meet different working condition requirements.

[0042] In some embodiments, the chain connecting assembly comprises a fixing plate 32 arranged at the top of the guide rod 26 and a connecting rod 33 arranged on the fixing plate 32, the connecting rod 33 comprises a screw rod portion 331 and a connecting portion 332, the screw rod portion 331 is provided with a fixing nut 34 on each of the upper and lower sides of the fixing plate 32, and the connecting portion 332 is connected with the third chain 13, so that the chain connecting assembly is convenient to disassemble and assemble and has good adjustability.

[0043] In some embodiments, anti-falling holes 24 are staggered on both sides of the front end of the upright column 5, the long screw rods 17, the short connecting plates 18, the lock plates 19, the fixing pin shafts 20 and the spring jacking assemblies are all two, the two long screw rods 17 are symmetrically arranged on both sides of the chain connecting plate 16, and when one side fails, the other side can still provide protection, and the safety factor is further improved.

[0044] In some embodiments, the specification of the second chain 12 is larger than that of the third chain 13, the second chain 12 is a large-sized chain for bearing, the safety is guaranteed, the third chain 13 is a small-sized chain for tensioning, the self-weight is reduced, the effective tensioning force is increased, especially in the application scene of high floors, the length of the transmission chain used is long, and the self-weight will greatly offset the tensioning force provided by the second spring 27, so the smaller the third chain 13 is, the better.

[0045] In some embodiments, the first sprocket 9 and the second sprocket 14 are the same size, and the cost is reduced.

[0046] In view of the foregoing, it will be seen that the foregoing detailed description of the application is only illustrative in nature and not limiting. Although specific reference is made to the examples contained herein, one of ordinary skill in the art will realize that changes can be made to the present application without departing from the spirit and scope of the application. Accordingly, the disclosed examples are to be considered illustrative and not restrictive, and the scope of the application is to be indicated by the appended claims rather than the foregoing description. Although the application has been described in conjunction with specific embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, it is intended to embrace all such alternatives, modifications and variations as fall within the spirit and broad scope of the application. All publications, patents and patent applications mentioned herein are incorporated by reference in their entirety for the purpose of describing and disclosing, for example, the methodologies, procedures, compounds, compositions, compositions of matter, devices, articles and / or apparatuses described therein.

[0047] In addition, it should be understood that, in the foregoing description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description of a figure for the purpose of streamlining the disclosure and aiding in the understanding of one or more aspects of particular embodiments. However, this is not to be interpreted as limiting the application to that embodiment. Rather, the application is intended to encompass all possible combinations of features, and the independent recitation of a feature in various places in this disclosure should not be construed as requiring that the feature be present in all embodiments. In other words, it is intended that individual aspects of the application can be set forth and claimed in their own separate advantages, and that combinations of aspects can be claimed to provide a range of features and advantages.

[0048] Finally, it should be understood that the application disclosed herein is to be considered merely illustrative in nature and that other modifications and embodiments can occur to those skilled in the art. Accordingly, the application is not to be limited to the specific embodiments illustrated and discussed.

Claims

1. A chain hoisted interlayer hoist characterized in that, The utility model relates to a kind of lifting platform, including control box (1), guide wheel (2), slider (3), cargo platform (4), stand (5), speed reducer (6), chain transmission structure and lifting loop, the guide wheel (2) is set to the bottom of stand (5), the cargo platform (4) is set to be slid along stand (5) up and down by slider (3), the chain transmission structure includes transmission shaft (7), driving sprocket (8), first sprocket (9), first chain (10) and tension sprocket (11), the transmission shaft (7) is set to the upper portion of stand (5), the driving sprocket (8) is connected with the output shaft of speed reducer (6), the first sprocket (9) is set to transmission shaft (7), the first chain (10) is set to first sprocket (9) and driving sprocket (8), the lifting loop includes second chain (12), third chain (13) and second sprocket (14), the second sprocket (14) is set to transmission shaft (7), one end of the second chain (12) is upwards and passes through second sprocket (14), and the other end is connected with third chain (13), one end of the third chain (13) is downwards and passes through guide wheel (2), and the other end is connected to slider (3).

2. A chain hoist interlayer hoist according to claim 1, characterized in that, The stand (5) is provided with a safety lock (15), which is used to pop out the lock block of the safety lock (15) below the cargo platform (4) when the cargo platform (4) rises to a certain height.

3. A chain hoist interlayer hoist according to claim 1, characterized in that, It also includes a fall arrest system, which includes a chain connecting plate (16), a long screw rod (17), a short connecting plate (18), a lock plate (19), a fixed pin shaft (20) and a spring pressing assembly, the chain connecting plate (16) is connected with the second chain (12), one end of the long screw rod (17) is connected with the chain connecting plate (16), the other end is connected with the short connecting plate (18), the fixed pin shaft (20) is arranged on the slider (3), the lock plate (19) is rotatably arranged on the fixed pin shaft (20), the spring pressing assembly includes a fixed rod (21) hinged to the slider (3) and a first spring (22) sleeved on the fixed rod (21), the lock plate (19) is provided with a positioning hole (23) on the side close to the fixed rod (21), the first spring (22) is pressed between the positioning hole (23) and the fixed rod (21), and the front end of the stand (5) is provided with a fall arrest hole (24) matched with the lock plate (19) in intervals. Under normal working conditions, the tension of the second chain (12) is transmitted through the chain connecting plate (16), the long screw rod (17) and the short connecting plate (18), so that the tail of the lock plate (19) rotates towards the center of the slider (3) and compresses the first spring (22), and at this time the lock plate (19) is located outside the fall arrest hole (24). When the second chain (12) breaks accidentally, the tail of the lock plate (19) is embedded in the fall arrest hole (24) under the action of the first spring (22).

4. A chain hoist interlayer hoist according to claim 1, characterized in that, The chain tensioning mechanism further comprises a detection switch (28) and a detection sheet (29), the detection sheet (29) is arranged on the guide rod (26) and comprises an upper detection end (291) and a lower detection end (292), the detection switch (28) is located on the moving path of the guide rod (26), when the lower detection end (292) is detected by the detection switch (28), it is necessary to stop and replace the second chain (12), when the upper detection end (291) is detected by the detection switch (28), it is necessary to stop and remove the obstacle.

5. A chain hoist interlayer hoist according to claim 4, characterized in that The installation plate (30) is further provided, the vertical adjusting hole (31) is arranged on the installation plate (30), a plurality of fixing holes are arranged on the stand column (5) along the height direction, and the detection switch (28) is arranged on the stand column (5) through the installation plate (30).

6. A chain hoist interlayer hoist according to claim 5, characterized in that The chain connecting assembly comprises a fixing plate (32) arranged on the top of the guide rod (26) and a connecting rod (33) arranged on the fixing plate (32), the connecting rod (33) comprises a screw rod portion (331) and a connecting portion (332), the screw rod portion (331) is provided with a fixed nut (34) on the upper side and the lower side of the fixing plate (32) respectively, and the connecting portion (332) is connected with the third chain (13).

7. A chain hoist interlayer hoist according to claim 4, wherein, The stand column (5) is staggered on both sides of the front end of the stand column (5), the long screw rod (17), the short connecting plate (18), the lock plate (19), the fixed pin shaft (20) and the spring pressing assembly are all two, and the two long screw rods (17) are symmetrically arranged on both sides of the chain connecting plate (16).

8. A chain hoist interlayer hoist according to claim 3, characterized in that, The specification of the second chain (12) is greater than that of the third chain (13).

9. A chain hoist interlayer hoist according to claim 1, wherein, The first chain wheel (9) and the second chain wheel (14) are the same size.

10. A chain hoist interlayer hoist according to claim 1, wherein, ​

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