CN211619777U

CN211619777U - Driving elevation structure

Info

Publication number: CN211619777U
Application number: CN201922328869.XU
Authority: CN
Inventors: 古正宇; 何芬; 彭平; 段玮; 金鸿峰; 周毅; 张志勇; 喻金成; 杨东; 贺仁福; 杨东甫
Original assignee: Chongqing Sushi Sida Test Equipment Co ltd
Current assignee: Chongqing Sushi Sida Test Equipment Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-10-02
Anticipated expiration: 2029-12-23

Abstract

The utility model provides a travelling crane lifting structure, which comprises at least one vertically arranged spiral lifting piece connected with an object taking piece, a driving mechanism for driving the spiral lifting piece to rotate, and a guiding structure for guiding the vertical movement of the object taking piece; the guide structure comprises at least one vertically arranged lifting guide pillar, the lower end of the lifting guide pillar is fixedly connected with the fetching piece, and the upper part of the lifting guide pillar penetrates through the travelling crane frame and is vertically and slidably connected with the travelling crane frame; the upper part of the spiral lifting piece penetrates out of the bicycle frame, and the lower end of the spiral lifting piece is axially and fixedly connected with the fetching piece. The driving mechanism of the utility model drives the spiral lifting piece to spirally lift or spirally descend relative to the travelling crane frame, so that the fetching piece vertically moves; the lifting guide pillar and the spiral lifting piece limit the circumferential direction of the object, the object is prevented from rotating in the motion process, the swing amplitude of the object is reduced, the damage degree of the spiral lifting piece is reduced, and the service life of the spiral lifting piece is prolonged.

Description

Driving elevation structure

Technical Field

The utility model belongs to the technical field of the driving goes up and down, concretely relates to driving elevation structure.

Background

The driving is the common name of cranes such as cranes, navigation vehicles, overhead traveling cranes and the like, the bridge crane is characterized in that the heavy objects on the object taking pieces can be vertically lifted and/or horizontally moved in space, the driving can link the lifted objects with the lifting mechanism by taking the objects, thus the objects are loaded, unloaded, lifted, installed and the like, and the object taking pieces are various in types, such as: lifting hooks, lifting rings, binders, clamps, supporting claws, supporting beams, electromagnetic suckers, vacuum suckers, grab buckets, container spreaders, pods and the like.

The object taking part is arranged below the travelling crane frame and performs vertical lifting motion relative to the travelling crane frame through the travelling crane lifting structure. The lifting structure for lifting the object taken by the traveling crane has various forms, such as a pulley and steel wire rope structure, a screw and screw sleeve structure, a worm wheel and worm structure and the like. When the structure of using screw rod and screw rod cover or worm wheel and worm makes and gets thing piece lift, because the screw rod is shorter with the cooperation length of screw rod cover, worm wheel and worm, and for clearance fit for get thing piece when rising decline, front and back, left and right sides remove, get thing piece and can produce the swing, thereby lead to the screw thread of screw rod or the tooth of worm impaired.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art, the utility model aims at providing a driving elevation structure for can produce the swing when solving and getting the article and remove, lead to the impaired problem of screw thread of screw rod.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a travelling crane lifting structure is used for connecting a travelling crane frame and an object taking piece, wherein an object taking piece is positioned below the travelling crane frame, and the object taking piece can vertically move relative to the travelling crane frame through the travelling crane lifting structure; the travelling crane lifting structure comprises at least one vertically arranged spiral lifting piece connected with the fetching piece, a driving mechanism for driving the spiral lifting piece to rotate and a guiding structure for guiding the vertical movement of the fetching piece;

the guide structure comprises at least one vertically arranged lifting guide pillar, the position of the lifting guide pillar is staggered with the spiral lifting piece, the lower end of the lifting guide pillar is fixedly connected with the fetching piece, and the upper part of the lifting guide pillar penetrates through the travelling crane frame and is vertically and slidably connected with the travelling crane frame;

the upper part of the spiral lifting piece penetrates out of the bicycle frame, and the lower end of the spiral lifting piece is axially and fixedly connected with the fetching piece; the driving mechanism drives the spiral lifting piece to spirally lift or spirally descend relative to the traveling crane frame so as to enable the fetching piece to vertically move.

In the technical scheme, the driving mechanism drives the spiral lifting piece to spirally lift or spirally descend relative to the travelling crane frame so as to enable the fetching piece to vertically move; the lifting guide pillar and the spiral lifting piece limit the circumferential direction of the object, the object is prevented from rotating in the motion process, the swing amplitude of the object is reduced, the damage degree of the spiral lifting piece is reduced, and the service life of the spiral lifting piece is prolonged.

The utility model discloses an in the preferred embodiment, vertical pipe has set firmly on the driving frame, and the upper and lower both ends of pipe all extend to the driving frame is outside, and the upper portion of lift guide pillar passes and with the vertical sliding connection of pipe in the pipe. After the guide pipe is arranged, the matching length of the lifting guide post and the travelling crane frame can be increased, and the swing amplitude of the object in the moving process is further reduced.

In a preferred embodiment of the utility model, an expansion bracket is arranged between the travelling crane frame and the object taking part, the upper end of the expansion bracket is fixedly connected with the travelling crane frame, and the lower end of the expansion bracket is fixedly connected with the object taking part;

the object taking piece moves downwards, the telescopic frame extends, the object taking piece moves upwards, and the telescopic frame shortens.

After setting up the expansion bracket, at the in-process of getting the motion of thing piece, the expansion bracket can further reduce the swing of getting the article, and when screw lift spare fracture or skidded, the expansion bracket can be pulled with getting the thing piece moreover, prevents to get the thing piece and drops to ground and damage, also can prevent to get the thing piece simultaneously and drop and injure the people by a crashing object.

In a preferred embodiment of the present invention, the number of the telescopic frames is two, and the two sets of telescopic frames are symmetrically arranged around the object. The strength is improved, the movement is more stable, and the acting force for taking the object is more uniform.

The utility model discloses an among the preferred embodiment, spiral lifting member is the worm, and actuating mechanism include with worm meshed worm wheel, drive worm wheel pivoted and with the first motor of driving frame rigid coupling, the lower extreme of worm with get thing piece and rotate and be connected and axial fixity and be connected.

The vertical movement of the article taking piece is realized through the structure of the worm gear and the worm, and the transmission mode is reliable.

In another preferred embodiment of the present invention, the number of the worms is two, and the two worms are driven by one first motor or driven by two first motors respectively. The two worms are arranged, so that the lifting motion of the object taking is more stable, and the reliability is higher.

In another preferred embodiment of the present invention, the two worms are driven by a first motor, the output shaft of the first motor is connected to a gear box, the gear box includes two coaxial output shafts with the same rotation direction, the axis of the output shaft of the gear box is perpendicular to the axis of the output shaft of the first motor, and two worm wheels are respectively coaxially connected to two output shafts of the gear box, and the two worm wheels are respectively engaged with the two worms.

In the technical scheme, the two worms are driven by the first motor, so that the two worms can synchronously rotate and the operation is reliable.

The utility model discloses an in another preferred embodiment, spiral lifting member is the screw rod, and actuating mechanism includes and gets the second motor of thing piece rigid coupling, the output shaft and the coaxial rigid coupling of screw rod of second motor, the rigid coupling has the thread bush with screw rod threaded connection on the driving frame.

The vertical movement of the fetching piece is realized through the structure of the screw thread sleeve, and the transmission mode is reliable.

In another preferred embodiment of the present invention, the number of the screws is two, and the two screws are driven by one second motor or driven by two second motors respectively. The two screws are arranged, so that the lifting motion of the object taking is more stable, and the reliability is higher.

The utility model discloses an in another kind of preferred embodiment, two screw rods are by a second motor drive, and the output shaft of second motor has transport mechanism, and transport mechanism includes two vertical settings and the same output shaft of direction of rotation, and a screw rod of the coaxial rigid coupling of two output shafts of transport mechanism, two screw rods respectively with two thread bush threaded connection. The two screws are driven by a second motor, so that the two screws can synchronously rotate, and the operation is reliable.

The beneficial effects of the above technical scheme are: additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a crane lifting structure according to a first embodiment of the present application.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Reference numerals in the drawings of the specification include: truss 100, traveling crane frame 200, mounting plate 210, guide pipe 220, spacing pipe 230, fetching piece 300, spiral lifting piece (worm) 410, lifting guide post 420, first motor 430, gear box 440, gear box output shaft 441, worm gear shell 450 and expansion bracket 460.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

Example one

As shown in fig. 1 and fig. 2, the embodiment provides a lifting structure for a traveling crane, which is used to connect a traveling crane frame 200 and an object-taking member 300, wherein the object-taking member 300 is located below the traveling crane frame 200, and the object-taking member 300 realizes vertical movement relative to the traveling crane frame 200 through the lifting structure. The object 300 may be a hook, a sling, a binder, a clamp, a pallet, a bolster, an electromagnetic chuck, a vacuum chuck, a grapple, a container spreader, a pod, etc., and the object 300 shown in fig. 1 and 2 is a pod.

In a preferred embodiment of the present invention, the lifting structure of the traveling crane includes at least one vertically disposed spiral lifting member 410 connected to the object-taking member 300, a driving mechanism for driving the spiral lifting member 410 to rotate, and a guiding structure for guiding the vertical movement of the object-taking member 300. The guide structure comprises at least one vertically arranged lifting guide pillar 420, the position of the lifting guide pillar 420 and the spiral lifting piece 410 are staggered, the lower end of the lifting guide pillar 420 is fixedly connected with the fetching piece 300, and the upper part of the lifting guide pillar 420 penetrates through the travelling frame 200 and is vertically and slidably connected with the travelling frame 200. The upper part of the spiral lifting piece 410 penetrates out of the bicycle frame 200, and the lower end of the spiral lifting piece 410 is axially and fixedly connected with the fetching piece 300; the driving mechanism drives the spiral lifting member 410 to spirally lift or spirally lower relative to the traveling carriage 200 to vertically move the object 300.

In the present embodiment, the spiral elevating member 410 is a worm, and as can be seen from fig. 3, the driving mechanism includes a worm wheel engaged with the worm 410, and a first motor 430 for driving the worm wheel to rotate and fixed to the traveling frame 200. Specifically, the traveling frame 200 includes a mounting plate 210, and a worm wheel is mounted in a worm wheel case 450 that is bolted to the mounting plate 210 of the traveling frame 200; the first motor 430 is mounted on the mounting plate 210 of the traveling frame 200 by bolts, and an output shaft of the first motor 430 is disposed laterally. As shown in fig. 2, the lower end of the worm 410 is rotatably and axially fixedly connected with the fetching object 300, specifically, the lower end of the worm 410 passes through the top of the nacelle, and the worm 410 is axially limited by the retainer rings at the upper and lower sides of the top of the nacelle, so that the worm 410 can only rotate relative to the fetching object 300.

The first motor 430 drives the worm wheel to rotate, the worm wheel rotates to enable the worm 410 to move vertically relative to the traveling crane frame 200, and the worm 410 moves vertically to enable the object taking piece 300 to move vertically due to the fact that the lower end of the worm 410 is axially fixed with the object taking piece 300; during the vertical movement of the picking member 300, the upper portion of the lifting guide column 420 moves vertically on the traveling carriage 200. Because the lifting guide post 420 and the spiral lifting piece 410 are arranged in a staggered manner, the lifting guide post 420 and the spiral lifting piece 410 limit the circumferential direction of the object taking piece 300, the object taking piece 300 is prevented from rotating in the motion process, and the swing amplitude of the object taking piece 300 is reduced.

The travelling crane frame 200 is installed on the truss 100 to can move on the truss 100, and the mode that specifically makes to get thing piece 300 left and right, back-and-forth movement can adopt prior art, and it is not the innovation point of the utility model, it is not repeated here.

As shown in fig. 1-3, in another preferred embodiment, the number of the worms 410 is two, and the two worms 410 are symmetrically arranged with respect to the center of the object 300; the number of the lifting guide posts 420 is also two, and the two lifting guide posts 420 are also symmetrically arranged outside the worm 410 with respect to the center of the picking member 300. As shown in fig. 3, a gear box 440 is connected to the output shaft of the first motor 430, the gear box 440 includes two coaxial output shafts 441 rotating in the same direction, the axis of the output shaft 441 of the gear box is perpendicular to the axis of the output shaft of the first motor 430, and two output shafts 441 of the gear box 440 are coaxially connected to a worm wheel respectively, and the two worm wheels are engaged with the two worms 410 respectively. The gear box 440 includes a pair of engaged bevel gears (not shown), i.e., a driving bevel gear and a driven bevel gear, wherein the output shaft of the first motor 430 is coaxially fixed to the driving bevel gear, and two ends of the driven bevel gear are coaxially connected to a gear box output shaft 441, respectively.

While the first motor 430 drives the two worms 410 at the same time, it should be noted that in practice, the two first motors 430 may drive the two worms 410 respectively.

As shown in fig. 3, in another preferred embodiment, a vertical guide tube 220 is fixedly arranged on the mounting plate 210 of the traveling carriage 200, the vertical guide tube 220 is arranged corresponding to the lifting guide post 420, both the upper end and the lower end of the guide tube 220 extend out of the mounting plate 210, the upper part of the lifting guide post 420 passes through the guide tube 220 and is vertically slidably connected with the guide tube 220, for example, the lifting guide post 420 and the guide tube 220 are in clearance fit or transition fit, so that the swing amplitude of the object taking object is smaller.

As shown in fig. 3, in another preferred embodiment, a limiting pipe 230 corresponding to the spiral lifting member 410 is fixedly disposed on the mounting plate 210 of the traveling crane frame 200, and an upper portion of the spiral lifting member 410 passes through the limiting pipe 230 and can slide and rotate vertically in the limiting pipe 230. The check tube 230 communicates with the worm gear case 450 so that the worm gear can be engaged with the worm 410.

As shown in fig. 1 and 2, in another preferred embodiment, there are two sets of telescopic frames 460 between the traveling carriage 200 and the article taking member 300, and the two sets of telescopic frames 460 are symmetrically arranged around the article taking member 300; the upper end of the telescopic frame 460 is fixedly connected with the travelling crane frame 200, and the lower end of the telescopic frame 460 is fixedly connected with the fetching piece 300; the object taking member 300 moves downwards, the telescopic frame 460 extends, the object taking member 300 moves upwards, and the telescopic frame 460 shortens. In the present embodiment, the telescopic frame 460 may be, but is not limited to, a folding frame disclosed in CN201510035983.7 or a telescopic frame 460 disclosed in CN201510516774.4, which are not described herein for the prior art.

Example two

The principle of this embodiment is substantially the same as that of the first embodiment, except that in this embodiment, the spiral lifting member 410 is a screw, and when the number of the screw is one, the driving mechanism includes a second motor fixedly connected to the object 300 through a bolt, an output shaft of the second motor is vertically disposed, an output shaft of the second motor is coaxially and fixedly connected to the screw, and the traveling crane frame 200 is fixedly connected to a thread sleeve in threaded connection with the screw.

When the number of the screws is two, the two screws are driven by one second motor or driven by two second motors respectively. When two screw rods are driven by a second motor, the output shaft of the second motor is connected with a transmission mechanism, the transmission mechanism comprises two output shafts which are vertically arranged and have the same rotation direction, and the transmission mechanism can be a belt pulley mechanism or three side-by-side external gear meshed gears in the prior art. Two output shafts of the conveying mechanism are coaxially and fixedly connected with a screw rod respectively, and the two screw rods are in threaded connection with the two thread sleeves respectively.

The first embodiment and the second embodiment only show two ways for lifting the object taking piece, and the object taking piece can be lifted by adopting the structures of a gear rack, a gear chain, a pulley steel wire rope and the like in the prior art.

In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A travelling crane lifting structure is used for connecting a travelling crane frame and an object taking piece, wherein an object taking piece is positioned below the travelling crane frame, and the object taking piece can vertically move relative to the travelling crane frame through the travelling crane lifting structure; the lifting device is characterized in that the travelling crane lifting structure comprises at least one vertically arranged spiral lifting piece connected with the fetching piece, a driving mechanism for driving the spiral lifting piece to rotate and a guiding structure for guiding the vertical movement of the fetching piece;

2. A crane lifting structure as claimed in claim 1, wherein the crane frame is fixedly provided with a vertical guide tube, the upper and lower ends of the guide tube extend out of the crane frame, and the upper part of the lifting guide post passes through the guide tube and is vertically connected with the guide tube in a sliding manner.

3. A lifting structure for a traveling crane according to claim 1, wherein an expansion bracket is further provided between the traveling crane frame and the object-taking member, the upper end of the expansion bracket is fixedly connected to the traveling crane frame, and the lower end of the expansion bracket is fixedly connected to the object-taking member;

get thing piece downstream, the expansion bracket extension gets thing piece upstream motion, the expansion bracket shortens.

4. A crane lifting structure as claimed in claim 3, wherein the number of the telescopic frames is two, and the two telescopic frames are symmetrically arranged around the object.

5. A crane lifting structure as claimed in any one of claims 1 to 4, wherein said spiral lifting member is a worm, said driving mechanism comprises a worm wheel engaged with said worm, a first motor driving said worm wheel to rotate and fixed to said crane frame, and a lower end of said worm is rotatably and axially fixed to said object.

6. A crane lifting structure as claimed in claim 5, wherein the number of said worms is two, and the two worms are driven by one first motor or by two first motors respectively.

7. A crane lifting structure as claimed in claim 6, wherein two of said worms are driven by a first motor, the output shaft of said first motor is connected to a gear box, the gear box comprises two coaxial output shafts rotating in the same direction, the axis of the output shaft of the gear box is perpendicular to the axis of the output shaft of the first motor, the two output shafts of the gear box are respectively connected to a worm wheel, and the two worm wheels are respectively engaged with the two worms.

8. A crane lifting structure as claimed in any one of claims 1 to 4, wherein said spiral lifting member is a screw, said driving mechanism includes a second motor fixed to the object-taking member, an output shaft of the second motor is fixed coaxially to said screw, and said crane frame is fixed with a threaded sleeve in threaded connection with said screw.

9. A crane lifting structure as claimed in claim 8, wherein the number of said screws is two, and the two screws are driven by a second motor or by two second motors respectively.

10. A crane lifting structure as claimed in claim 9, wherein two of said screw rods are driven by a second motor, the output shaft of the second motor is connected to a transmission mechanism, the transmission mechanism comprises two vertically arranged output shafts rotating in the same direction, each of the two output shafts of the transmission mechanism is coaxially and fixedly connected to one of said screw rods, and the two screw rods are respectively in threaded connection with two threaded sleeves.