CN211727976U - Pipe lifting device of pipe cutting machine - Google Patents

Abstract

The utility model discloses a tubular product hoisting device of pipe cutting machine. This scheme includes the frame, support frame and main lifting unit, and main lifting unit includes driving motor, the speed reducer, drive connecting rod and at least two sets of screw drive assembly, and screw drive assembly all includes drive lead screw, drive nut, and drive nut includes central abaculus, fixed cover and threaded connection spare, and the speed reducer corresponds each screw drive assembly of group and respectively sets up a set ofly, and drive connecting rod connects each speed reducer of group, and driving motor is connected and drives its rotation with one of them set of speed reducer. Set up main lifting unit to including at least two sets of screw drive assembly, to the support of heavy pipe, long tube steady, connect each group's speed reducer through the drive connecting rod to a driving motor drives each group screw drive assembly synchronous working, and drive simple structure, the lifting efficiency is high, sets up drive nut to the form of central abaculus and fixed cover assembly, thereby conveniently changes the drive nut of wearing and tearing, is convenient for maintain.

Description

Pipe lifting device of pipe cutting machine

Technical Field

The utility model relates to a laser pipe cutting machine field, concretely relates to pipe lifting device of pipe cutting machine.

Background

The pipe lifting device is a device for lifting pipes in the field of laser pipe cutting, and can be applied to a feeding end or a discharging end of a laser pipe cutting machine.

In the market, referring to fig. 1, a common pipe lifting device realizes lifting of a pipe by means of transmission of a single screw 9, while the pipe of a laser pipe cutting machine which can cut has different lengths, and for a long pipe and a heavy pipe, the lifting mechanism driven by the single screw has the following problems:

firstly, the support stability of the lifting mechanism to the heavy pipe and the long pipe is poor;

secondly, the load driven by a single screw is large, the requirement on the power of a driving motor is high, and the improvement efficiency needs to be improved;

and thirdly, the nut driven by the screw rod has loss and is inconvenient to maintain.

Therefore, in order to improve the applicability of the pipe lifting device in the prior art and improve the working efficiency of the lifting device in the laser pipe cutting process, the pipe lifting device of the pipe cutting machine is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a tubular product hoisting device of pipe cutting machine, it includes main hoisting assembly, sets up main hoisting assembly into including at least two sets of screw drive subassemblies to improve drive nut's structure, this tubular product hoisting device of pipe cutting machine has that the suitability is strong, work efficiency is high, be convenient for maintain the advantage.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a pipe lifting device of a pipe cutting machine comprises a frame, a support frame arranged on the frame along a vertical movement and a main lifting assembly for driving the support frame to lift, wherein the main lifting assembly comprises a driving motor, a speed reducer, a driving connecting rod and at least two groups of screw rod transmission assemblies, the screw rod transmission assemblies are arranged on the frame along a horizontal direction at intervals, the screw rod transmission assemblies respectively comprise a driving screw rod and a driving nut, the driving nut comprises a central embedded block, a fixed sleeve and a threaded connecting piece, an inner threaded hole connected with the driving screw rod is formed in the center of the central embedded block, a mounting hole for mounting the central embedded block is formed in the fixed sleeve, the central embedded block is fixed in the mounting hole by the threaded connecting piece, the fixed sleeve is fixed with the support frame, and the speed reducer is respectively provided with a group corresponding to each group of the screw rod transmission, the driving connecting rod is connected with each group of speed reducers and realizes synchronous rotation of each group of speed reducers, and the driving motor is connected with one group of speed reducers and drives the speed reducers to rotate.

Through setting up like this, set up main lifting unit to including at least two sets of screw drive subassemblies, share load on the support frame to each group screw drive subassembly on, thereby steadily, support heavy pipe effectively, the long tube, connect each group's speed reducer through the drive connecting rod, drive each group screw drive subassembly synchronous working with a driving motor, the drive simple structure, and effectively reduce lifting device's whole weight, and because the load of singly organizing screw drive subassembly descends, consequently, lifting device's lifting efficiency can be improved, in addition, set up drive nut into the form of central abaculus and fixed cover assembly, thereby conveniently change the drive nut of wearing and tearing, and the maintenance is convenient.

Preferably, the mounting hole comprises a first blind hole and a second blind hole, the first blind hole and the second blind hole are respectively formed by two sides of the fixing sleeve in opposite directions, the first blind hole is communicated with the second blind hole, the aperture of the first blind hole is smaller than that of the second blind hole, the central insert block is mounted in the second blind hole, and the aperture of the first blind hole is larger than that of the internal threaded hole.

Through setting up like this, the fixed cover is gone into by the grafting of one side of second blind hole to central abaculus to with the junction department butt between first blind hole and the second blind hole, first blind hole supplies the drive lead screw to pass, thereby the drive lead screw can with drive nut's internal thread hole threaded connection.

Preferably, at least two first threaded holes are formed in the central insert at intervals in the circumferential direction, the forming direction of the first threaded holes is consistent with the forming direction of the internal threaded holes, a second threaded hole is formed in the joint portion of the fixed sleeve and the central insert corresponding to the first threaded holes, the first threaded holes and the second threaded holes are spliced to form a complete threaded mounting hole, the threaded connecting piece is a fastening screw, and the fastening screw is in threaded connection with the threaded mounting hole.

Through setting up like this, form complete screw thread mounting hole through the first screw hole concatenation on central abaculus circumference and the fixed second screw hole concatenation on the cover, install in the screw thread mounting hole through fastening screw thread, thereby realize with central abaculus and fixed cover fixed connection, and the orientation of seting up of first screw hole is unanimous with the orientation of seting up of internal thread hole, thereby fastening screw is long with the thread length of central abaculus, joint strength is high, set up two at least first screw holes, thereby can splice into two at least screw thread mounting holes, thereby the joint strength of multiplicable fixed cover and central abaculus, reduce central abaculus for fixed cover around its central pivoted probably.

Preferably, a guide groove is formed in the inner wall of the second blind hole, a guide convex edge is arranged outside the central insert block, and the guide convex edge is in sliding fit with the guide groove.

Through setting up like this, protruding edge and guide way sliding fit through the direction, be convenient for realize first screw hole and second screw hole alignment, easy to assemble.

Preferably, the fixing sleeve is arranged in a mode that the second blind hole faces downwards and the first blind hole faces upwards.

Through setting up like this, fixed cover bears the gravity of support frame, and the center abaculus receives the ascending drive power of drive lead screw, takes this kind of mounting means, and the center abaculus is located the one side towards the bottom surface of frame for center building block is difficult to break away from with fixed cover, improves driven stability and reliability.

Preferably, the pipe lifting device further comprises an auxiliary lifting assembly, the auxiliary lifting assembly comprises an auxiliary lifting cylinder, the support frame comprises a support back frame, a fixed back plate, a sliding plate and a support wheel set, the fixed back plate is fixed on the support back frame, the support back frame is fixed with the driving nut, the sliding plate vertically slides up and down relative to the fixed back plate, the auxiliary lifting cylinder is arranged along the vertical direction, one end of the auxiliary lifting cylinder is fixed on the fixed back plate, the other end of the auxiliary lifting cylinder is fixed with the sliding plate, and the support wheel set is fixed on the sliding plate.

Through setting up like this, tubular product is by supporting wheelset bearing, through setting up the supplementary promotion of supplementary lift assembly, further improves tubular product hoisting device's suitability.

Preferably, the supporting wheel sets are provided with a plurality of groups, each supporting wheel set is correspondingly provided with one auxiliary lifting assembly, and the plurality of groups of supporting wheel sets are arranged on the supporting frame at intervals along the horizontal direction.

Through setting up like this, set up multiunit and support the wheelset, and each supports the wheelset and corresponds and set up an auxiliary lifting assembly to when synchronous rising or decline of all auxiliary lifting assemblies, but the tubular product that the synchronous drive lies in on supporting the wheelset rises or descends, and only when one of them group of auxiliary lifting assembly descends or promotes, can be with tubular product from supporting the loading and unloading of wheelset.

Preferably, the pipe lifting device further comprises a guide rail assembly, the guide rail assembly comprises a linear guide rail and a sliding block, the linear guide rail is arranged along the vertical direction, the linear guide rail is fixed on the rack, the sliding block is in sliding fit with the linear guide rail, and the sliding block is fixed with the support back frame.

Through setting up like this, the slider slides along linear guide for the lift of support frame provides the direction for the lift of support frame is steady, reduces the condition that causes the lead screw to appear warping and takes place.

Compared with the prior art, the utility model discloses profitable technological effect has been obtained:

1. set up main hoisting component to including at least two sets of screw drive components, to heavy pipe, the support of long tube is steady, connect each group's speed reducer through the drive connecting rod, drive each group screw drive component synchronous working with a driving motor, drive simple structure, and effectively reduce hoisting device's whole weight, and because the load that singly organizes screw drive component descends, consequently, hoisting device's lifting efficiency can be improved, in addition, set up drive nut to the form of central abaculus and fixed cover assembly, thereby conveniently change the drive nut of wearing and tearing, and the maintenance is convenient.

2. The first threaded hole in the circumferential direction of the central embedded block and the second threaded hole in the fixed sleeve are spliced to form a complete threaded mounting hole, and then the central embedded block is connected with the threaded mounting hole through the fastening screw, so that the connecting mode is adopted, and the connecting strength is high.

3. The bronze drum is provided with a guide convex edge which is matched with the guide groove, so that the central embedded block is convenient to assemble with the fixed sleeve.

4. The auxiliary lifting assembly is arranged for assisting lifting, so that the applicability of the pipe lifting device is further improved.

5. Through setting up guide rail assembly, provide the direction for the lift of support frame is steady, and the reduction causes the condition that the lead screw appears warping to take place.

Drawings

FIG. 1 is a prior art pipe hoist;

fig. 2 is a schematic overall structure diagram of the pipe lifting device according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a main lifting assembly in an embodiment of the present invention;

fig. 4 is a schematic three-dimensional structure diagram of a driving nut according to an embodiment of the present invention;

fig. 5 is an elevation view of a drive nut in an embodiment of the invention;

fig. 6 is a cross-sectional view taken along the plane a-a in fig. 5.

Wherein, the technical characteristics that each reference numeral refers to are as follows:

1. a frame; 2. a support frame; 201. a support back frame; 202. fixing the back plate; 203. a sliding plate; 204. a support wheel set; 3. a primary lifting assembly; 301. a drive motor; 302. a speed reducer; 303. a drive link; 304. the screw rod transmission assembly; 3041. driving the screw rod; 30411. a bearing; 30412. a coupling; 3042. a drive nut; 4. a central insert; 401. an internally threaded bore; 402. a first threaded hole; 403. a guide convex edge; 5. fixing a sleeve; 501. mounting holes; 5011. a first blind hole; 5012. a second blind hole; 50121. a guide groove; 502. a step portion; 503. a second threaded hole; 7. an auxiliary lifting assembly; 8. a guide rail assembly; 801. a linear guide rail; 802. a slider; 9. a screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.

Referring to fig. 2, the embodiment discloses a pipe lifting device of a pipe cutting machine, which includes a frame 1, a support frame 2 and a main lifting assembly 3 arranged on the frame 1, wherein the support frame 2 is movably arranged on the frame 1 along a vertical direction, the main lifting assembly 3 drives the support frame 2 to vertically lift on the frame 1, the main lifting assembly 3 includes a driving motor 301, a speed reducer 302, a driving connecting rod 303 and at least two sets of screw rod transmission assemblies 304, and in the embodiment, the screw rod transmission assemblies 304 are arranged in two sets.

Referring to fig. 2, 3, 4, 5 and 6, two sets of screw rod transmission assemblies 304 are arranged on the frame 1 at intervals along the horizontal direction, each screw rod transmission assembly 304 includes a driving screw 3041 and a driving nut 3042, two ends of the driving screw 3041 are respectively provided with a bearing 30411, the driving screw 3041 is connected with the reducer 302 through a coupling 30412, the driving nut 3042 includes a center insert 4, a fixing sleeve 5 and a threaded connector (not shown in the figure), the center of the center insert 4 is provided with an internal threaded hole 401, the internal threaded hole 401 is arranged through the center insert 4, the driving screw 3041 is in threaded connection with the internal threaded hole 401, the fixing sleeve 5 is provided with a mounting hole 501 for mounting the center insert 4, the threaded connector fixes the center insert 4 in the mounting hole 501, the fixing sleeve 5 is fixed with the support frame 2, thereby driving the screw 3041 to rotate and driving the support frame 2 to lift through the screw transmission with the driving nut 3042.

Referring to fig. 2 and 3, the speed reducers 302 are respectively provided with one group corresponding to each group of screw transmission assemblies 304, the driving connecting rods 303 are connected with all the speed reducers 302 and realize the synchronous rotation of all the speed reducers 302, in this embodiment, one driving connecting rod 303 is provided, the driving connecting rods 303 are connected with two groups of speed reducers 302, and the driving motor 301 is connected with one group of speed reducers 302 and drives the same to rotate, so that after the driving motor 301 rotates, all the speed reducers 302 can synchronously rotate.

In this embodiment, the speed reducer 302 is a worm gear speed reducer.

Referring to fig. 5 and 6, the mounting hole 501 includes a first blind hole 5011 and a second blind hole 5012, the first blind hole 5011 and the second blind hole 5012 are respectively formed by two sides of the fixing sleeve 5 in opposite directions, the first blind hole 5011 is communicated with the second blind hole 5012, the aperture of the first blind hole 5011 is smaller than that of the second blind hole 5012, the central insert 4 is mounted in the second blind hole 5012, and the aperture of the first blind hole 5011 is larger than that of the internal threaded hole 401, so that a step 502 is formed between the first blind hole 5011 and the second blind hole 5012, when the central insert 4 is mounted, the central insert 4 enters the fixing sleeve 5 from one side of the second blind hole 5012 until the central insert 4 abuts against the step 502, thereby facilitating positioning and limiting the central insert 4.

Referring to fig. 4 and 5, at least two first threaded holes 402 are formed in the central insert 4 at intervals in the circumferential direction, the forming direction of the first threaded holes 402 is the same as that of the internal threaded holes 401, a second threaded hole 503 is formed in the joint of the fixed sleeve 5 and the central insert 4 corresponding to the first threaded hole 402, the first threaded hole 402 and the second threaded hole 503 are spliced to form a complete threaded mounting hole 501, the threaded connector is a fastening screw, and the fastening screw is in threaded connection with the threaded mounting hole 501.

In this embodiment, the number of the first threaded holes 402 is 4, and the 4 first threaded holes 402 are uniformly distributed around the center of the central insert block 4.

Referring to fig. 5 and fig. 6, a guide slot 50121 is formed in the inner wall of the second blind hole 5012, a guide convex edge 403 is formed outside the central insert 4, and the guide convex edge 403 is in sliding fit with the guide slot 50121.

The guide slot 50121 may be rectangular slot or V-shaped slot.

Referring to fig. 3, in the present embodiment, the fixing sleeve 5 is disposed with the second blind hole 5012 facing downward and the first blind hole 5011 facing upward.

Referring to fig. 2, the tube lifting device further includes an auxiliary lifting assembly 7, the auxiliary lifting assembly 7 includes an auxiliary lifting cylinder, the support frame 2 includes a support back frame 201, a fixed back plate 202, a sliding plate 203 and a support wheel set 204, the fixed back plate 202 is fixed on the support back frame 201, the support back frame 201 is fixed to the fixing sleeve 5 of the driving nut 3042, the sliding plate 203 vertically slides up and down relative to the fixed back plate 202, the auxiliary lifting cylinder is disposed along the vertical direction, one end of the auxiliary lifting cylinder is fixed on the fixed back plate 202, the other end is fixed to the sliding plate 203, and the support wheel set 204 is fixed on the sliding plate 203.

The supporting wheel sets 204 are provided with a plurality of sets, each supporting wheel set 204 is correspondingly provided with an auxiliary lifting assembly 7, each auxiliary lifting assembly 7 works independently, and the plurality of sets of supporting wheel sets 204 are arranged on the supporting frame 2 at intervals along the horizontal direction.

Referring to fig. 2, the tube lifting device further includes a guide rail assembly 8, the guide rail assembly 8 includes a linear guide rail 801 and a sliding block 802, the linear guide rail 801 is disposed along a vertical direction, the linear guide rail 801 is fixed on the machine frame 1, the sliding block 802 is in sliding fit with the linear guide rail 801, and the sliding block 802 is fixed with the back support frame 201.

The utility model discloses use of embodiment:

tubular product or support frame 2 can have been placed in advance on support frame 2 and be the vacant state, when needing to promote support frame 2, at first the auxiliary lifting subassembly 7 of accessible risees the supporting wheel group 204 in with support frame 2 and risees, when unable satisfying the height requirement, make driving motor 301 work, driving motor 301 drives each group of speed reducer 302 synchronous revolution through drive connecting rod 303, thereby speed reducer 302 drives each group of lead screw 3041 rotation of lead screw transmission unit 304, furthermore, driving lead screw 3041 drives driving nut 3042 and goes up and down, thereby drive the whole lift of support frame 2 fixed with driving nut 3042, the adjustment precision is higher, compensate the not enough of auxiliary lifting subassembly 7 promotion.

The driving nut 3042 is detachably arranged, after the driving nut 3042 is used for a certain time, if the driving nut 3042 needs to be replaced due to abrasion, the central insert 4 in the driving nut 3042 can be separated from the fixed sleeve 5, the central insert 4 is replaced, waste of resources is reduced, the fixed sleeve 5 is recycled, and the energy-saving and environment-friendly effects are achieved.

In addition, a plurality of sets of supporting wheel sets 204 are provided, and each supporting wheel set 204 is correspondingly provided with an auxiliary lifting assembly 7, and the auxiliary lifting assemblies 7 work independently, so that when all the auxiliary lifting assemblies 7 rise or fall synchronously, the pipes on the supporting wheel sets 204 can be driven to rise or fall synchronously, and when only one set of the auxiliary lifting assemblies 7 falls or rises, the pipes can be loaded and unloaded from the supporting wheel sets 204.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims (8)

1. A pipe lifting device of a pipe cutting machine comprises a rack, a support frame arranged on the rack along a vertical movement, and a main lifting assembly for driving the support frame to lift, and is characterized in that the main lifting assembly comprises a driving motor, a speed reducer, a driving connecting rod and at least two groups of screw rod transmission assemblies, the screw rod transmission assemblies are arranged on the rack along a horizontal direction at intervals, the screw rod transmission assemblies comprise driving screws and driving nuts, the driving nuts comprise central embedded blocks, fixed sleeves and threaded connecting pieces, inner threaded holes connected with the driving screws are formed in the centers of the central embedded blocks, mounting holes for mounting the central embedded blocks are formed in the fixed sleeves, the central embedded blocks are fixed in the mounting holes through the threaded connecting pieces, the fixed sleeves are fixed with the support frame, the speed reducer corresponds to each group of the screw rod transmission assemblies and is respectively arranged in a group, the driving connecting rod is connected with each group of speed reducers and realizes synchronous rotation of each group of speed reducers, and the driving motor is connected with one group of speed reducers and drives the speed reducers to rotate.

2. The tube lifting device of the tube cutting machine according to claim 1, wherein the mounting hole comprises a first blind hole and a second blind hole, the first blind hole and the second blind hole are respectively formed by two sides of the fixing sleeve in opposite directions, the first blind hole is communicated with the second blind hole, the aperture of the first blind hole is smaller than that of the second blind hole, the center insert is mounted in the second blind hole, and the aperture of the first blind hole is larger than that of the internal threaded hole.

3. The pipe lifting device of the pipe cutting machine according to claim 2, wherein the central insert block is provided with at least two first threaded holes at intervals in the circumferential direction, the first threaded holes are formed in the same direction as the internal threaded holes, a second threaded hole is formed at the joint portion of the fixing sleeve and the central insert block corresponding to the first threaded holes, the first threaded holes and the second threaded holes are spliced to form a complete threaded mounting hole, the threaded connecting member is a fastening screw, and the fastening screw is in threaded connection with the threaded mounting hole.

4. The pipe lifting device of the pipe cutting machine according to claim 3, wherein a guide groove is formed in an inner wall of the second blind hole, a guide convex edge is arranged outside the central insert block, and the guide convex edge is in sliding fit with the guide groove.

5. The pipe lifting device of the pipe cutting machine according to any one of claims 2 to 4, wherein the fixing sleeve is disposed with the second blind hole facing downward and the first blind hole facing upward.

6. The pipe lifting device of the pipe cutting machine according to any one of claims 1 to 4, wherein the pipe lifting device further comprises an auxiliary lifting assembly, the auxiliary lifting assembly comprises an auxiliary lifting cylinder, the support frame comprises a support back frame, a fixed back plate, a sliding plate and a support wheel set, the fixed back plate is fixed on the support back frame, the support back frame is fixed with the driving nut, the sliding plate vertically slides up and down relative to the fixed back plate, the auxiliary lifting cylinder is arranged along a vertical direction, one end of the auxiliary lifting cylinder is fixed on the fixed back plate, the other end of the auxiliary lifting cylinder is fixed with the sliding plate, and the support wheel set is fixed on the sliding plate.

7. The pipe lifting device of the pipe cutting machine according to claim 6, wherein the supporting wheel sets are provided with a plurality of sets, each supporting wheel set is provided with one auxiliary lifting assembly, and the plurality of sets of supporting wheel sets are arranged on the supporting frame at intervals along the horizontal direction.

8. The pipe lifting device of the pipe cutting machine according to claim 6, further comprising a rail assembly, wherein the rail assembly comprises a linear rail and a slider, the linear rail is disposed along a vertical direction, the linear rail is fixed on the frame, the slider is slidably engaged with the linear rail, and the slider is fixed with the back support frame.

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