CN215903098U

CN215903098U - Tubular part clamping device

Info

Publication number: CN215903098U
Application number: CN202121347652.4U
Authority: CN
Inventors: 叶吉成
Original assignee: SUZHOU HONGLI AUTO PARTS CO Ltd
Current assignee: SUZHOU HONGLI AUTO PARTS CO Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-02-25
Anticipated expiration: 2031-06-15

Abstract

The utility model relates to a tubular part clamping device which comprises a bottom plate, a left clamping tool and a right clamping tool. The left clamping tool and the right clamping tool are fixed on the bottom plate, and the design structures of the left clamping tool and the right clamping tool are completely the same. Only with regard to left-hand clamping tool, its first side top subassembly, second side top subassembly, third side top subassembly all carry out the circumference equipartition around the theoretical central axis of pre-centre gripping tubular member. The first side top assembly and the second side top assembly are assembled on the supporting seat and execute radial sliding movement under the action of driving force of the jacking mechanism. The third side top component is fixed on the roll-over stand. The roll-over stand is hinged on the supporting seat and is locked by the locking component. When the first side top assembly and the second side top assembly are adjusted in place relative to the supporting seat in a radial displacement mode, and the third side top assembly is overturned in place relative to the supporting seat along with the overturning frame, the first side top assembly, the second side top assembly and the third side top assembly simultaneously prop against the outer side wall of the tubular part.

Description

Tubular part clamping device

Technical Field

The utility model relates to the technical field of steel pipe machining and manufacturing, in particular to a tubular part clamping device.

Background

In the process of forming a steel pipe (for example, bending, pipe reducing and side grinding operations), it is necessary to clamp the steel pipe by using a device. However, the cross section of the steel pipe is circular, and the outer diameter of the steel pipe varies according to the specification. For this reason, chinese utility model patent CN209551135U discloses a steel pipe centre gripping fixing device, as shown in fig. 1, it is including the base, the welding of base upper end has the groove rail, and set up the guide way in the groove rail, it has the guide block to slide to embed in the guide way, and the welding of guide block upper end has the connecting rod, the welding has the backing plate on the connecting rod, the spread groove has been seted up to backing plate both sides upper end, and be equipped with the grip slipper on the backing plate, the welding has the connecting plate on the grip slipper both sides lower extreme, and the pivot is connected with the centre gripping lid in grip slipper one end, the grip slipper has seted up second groove and first groove in with the centre gripping lid respectively. Above-mentioned technical scheme utilizes the horizontal migration of guide block in the guide way to adjust the distance between two guide blocks, increase and decrease the thickness of backing plate simultaneously, help carrying out the centre gripping to the steel pipe of different models fixedly. It can be known from the above description, when the external diameter of centre gripping steel pipe changed, need finely tune clamping mechanism again, the operation is wasted time and energy, and the accurate value of increasing and decreasing of backing plate thickness need obtain through a large amount of calculations, and application convenience and experience are extremely poor. Thus, a skilled person is urgently needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Accordingly, in view of the above-mentioned problems and disadvantages, the present inventors have collected information, evaluated and considered in many ways, and made experiments and modifications by skilled technicians engaged in the industry over many years.

In order to solve the technical problem, the utility model relates to a tubular part clamping device which comprises a bottom plate, a left clamping tool and a right clamping tool. The left clamping tool and the right clamping tool are detachably fixed on the bottom plate and are oppositely arranged along the left direction and the right direction. The left clamping tool and the right clamping tool are identical in design structure, and only the left clamping tool comprises a supporting seat, a roll-over stand, a locking assembly, a first side top assembly, a second side top assembly, a third side top assembly and a jacking mechanism. The first side top assembly, the second side top assembly and the third side top assembly are uniformly distributed in the circumferential direction around the theoretical central axis of the pre-clamping tubular piece. The first side top assembly and the second side top assembly are assembled on the supporting seat and execute radial sliding movement under the action of driving force of the jacking mechanism. The third side top assembly is detachably fixed on the roll-over stand. The roll-over stand can be freely hinged on the supporting seat in a roll-over mode, and the posture of the roll-over stand is locked by the aid of the locking assembly. And a first arc-shaped top contact surface, a second arc-shaped top contact surface and a third arc-shaped top contact surface which are matched with the outer diameter of the pre-clamping tubular part are respectively arranged on the first side top assembly, the second side top assembly and the third side top assembly in a one-to-one correspondence manner. When the first side top assembly and the second side top assembly are adjusted in place relative to the radial displacement of the supporting seat, and the third side top assembly is turned over relative to the supporting seat along with the turning frame, the first arc-shaped top contact surface, the second arc-shaped top contact surface and the third arc-shaped top contact surface simultaneously push against the outer side wall of the pre-clamping tubular part.

As a further improvement of the technical scheme of the utility model, the first lateral top assembly comprises a first lateral top block and a first screw unit. The first screw unit is composed of a plurality of first screws symmetrically inserted at two sides of the first side top block. The second lateral top component comprises a second lateral top block and a second screw unit. The second screw unit is composed of a plurality of second screws which are symmetrically inserted into two sides of the second side top block. A first inclined strip-shaped sliding notch matched with the first screw and a second inclined strip-shaped sliding notch matched with the second screw are respectively arranged on the supporting seat. The jacking mechanism comprises a jacking plate, a sliding plate and a linear driving unit. The sliding plate is detachably fixed on the upper plane of the ejector plate and is simultaneously abutted by the first side ejector block and the second side ejector block. The ejector plate and the sliding plate perform displacement motion along the up-and-down direction under the action of the driving force of the linear driving unit so as to simultaneously drive the first side ejection assembly and the second side ejection assembly to perform radial sliding motion. The first arc-shaped top contact surface and the second arc-shaped top contact surface are respectively and directly formed on the first side ejector block and the second side ejector block in a one-to-one correspondence mode.

As a further improvement of the technical scheme of the utility model, the linear driving unit comprises a bearing block and a screw rod. The bearing block is detachably fixed in the inner cavity of the supporting seat, and a threaded hole matched with the screw rod is formed in the bearing block. When the screw rod rotates circumferentially, the top pushing plate is directly pushed by the free end of the screw rod.

As a further improvement of the technical scheme of the utility model, the locking assembly comprises an upper fixed seat, a lower fixed seat, a swing arm, a bearing shaft and a U-shaped tightening piece. The U-shaped tightening piece is a bending piece and is formed by connecting a first side section, a transverse section and a second side section in sequence. The upper fixing seat and the lower fixing seat are detachably fixed on the roll-over stand and the supporting seat respectively and are oppositely arranged along the up-down direction. The swing arm is hinged on the lower fixed seat and can be freely lifted. The bearing shaft transversely penetrates through the swing arm and is provided with a first mounting hole and a second mounting hole which are respectively used for inserting and matching the first side section and the second side section. The upper fixed seat is provided with a limit groove matched with the transverse section. When the swing arm is lifted, the U-shaped applicator is dragged, and at the same time, the transverse section enters/departs from the limiting groove to realize the locking/unlocking operation of the posture of the turnover frame.

As a further improvement of the technical scheme of the utility model, the first arc-shaped top contact surface, the second arc-shaped top contact surface and the third arc-shaped top contact surface are all provided with wear-resistant coatings.

Compared with the tubular part clamping device with the traditional design structure, in the technical scheme disclosed by the utility model, the tubular part is supported and clamped by the left clamping tool and the right clamping tool at the same time, and the tubular part clamping device is particularly suitable for clamping and fixing the tubular part with large length and large weight. Before the clamping operation of the tubular part is executed, firstly, the outer diameter value of the tubular part needs to be measured, then the tubular part simultaneously traverses the left clamping tool and the right clamping tool, then the jacking mechanism acts to push the first side jacking assembly and the second side jacking assembly to execute radial displacement motion (the radial displacement is obtained by conversion according to the outer diameter value of the tubular part), so that the central axis of the tubular part coincides with a preset theoretical central line, then the roll-over stand is rotated until the contact surface of the third arc top is in contact with the outer side wall of the tubular part in a jacking mode, and finally, the posture of the roll-over stand is locked by the aid of the locking assembly, so that the tubular part is reliably clamped.

As can be seen from the above description, the whole clamping operation of the tubular member is very convenient and fast, and the clamping device is suitable for tubular members with various specifications, thereby realizing the design goal that the tubular member clamping device has a larger application range.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of a steel pipe clamping and fixing device in the prior art.

Figure 2 is a perspective view of the tubular member gripping device of the present invention.

Fig. 3 is a perspective view of a first viewing angle of the left clamping device in the tubular member clamping device of the present invention.

Fig. 4 is a front view of fig. 3.

Fig. 5 is a sectional view a-a of fig. 4.

FIG. 6 is a schematic perspective view of a support seat in the left-hand clamping fixture according to the present invention.

Fig. 7 is a perspective view of a second perspective view of the left-hand clamping device of the tubular clamping device of the present invention.

Fig. 8 is an enlarged view of part I of fig. 7.

Fig. 9 is a perspective view of a locking assembly in the left-hand clamping fixture of the present invention.

Fig. 10 is a perspective view of the first side top assembly in the left clamping tool of the present invention.

Fig. 11 is a perspective view of the second side top assembly in the left clamping tool of the present invention.

1-a bottom plate; 2, placing a clamping tool on the left; 21-a support seat; 211-a first inclined strip-shaped slippage notch; 212-a second inclined bar-shaped sliding notch; 22-a roll-over stand; 23-a locking assembly; 231-upper fixed seat; 2311-a limit groove; 232-lower fixed seat; 233-swing arm; 234-bearing shaft; 235-a U-shaped applicator; 2351-a first lateral segment; 2352-transverse section; 2353-a second lateral segment; 24-a first side top assembly; 241-a first side top block; 2411-a first arc-shaped top contact surface; 242-a first screw unit; 25-a second side top assembly; 251-a second side top block; 2511-a second arc top contact surface; 252-a second screw unit; 26-a third side top assembly; 261-a third arcuate top contact surface; 27-a jacking mechanism; 271-pushing the top plate; 272-linear drive unit; 2721-bearing block; 2722-screw rod; and 3, rightly placing a clamping tool.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "rear", "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The following will explain the content of the present invention in further detail with reference to specific embodiments, and fig. 2 shows a schematic perspective view of the tubular member clamping device of the present invention, which is mainly composed of a bottom plate 1, a left clamping tool 2, a right clamping tool 3, and so on. Wherein, put centre gripping frock 2 on the left side, put centre gripping frock 3 on the right side all detachably is fixed in bottom plate 1, and relative and put along left right direction. The distance value between the left clamping tool 2 and the right clamping tool 3 can be selected according to the total length of the pre-clamped tubular part. When the clamping operation of the tubular part is executed, the left clamping tool 2 and the right clamping tool 3 simultaneously bear on the tubular part and respectively approach to the left free end position and the right free end position of the tubular part in a one-to-one correspondence manner, and then the left clamping tool 2 and the right clamping tool 3 are respectively tightened to realize the circumferential clamping of the tubular part.

As shown in fig. 2, the left clamping fixture 2 and the right clamping fixture 3 have the same design structure and operate independently. With regard to the left-hand clamping fixture 2 only, as shown in fig. 3, 4 and 5, it is mainly composed of a supporting base 21, a roll-over stand 22, a locking assembly 23, a first side roof assembly 24, a second side roof assembly 25, a third side roof assembly 26, a jacking mechanism 27, and so on. Wherein the first, second and third side

top assemblies

24, 25, 26 are all circumferentially equispaced around the theoretical central axis of the pre-clamped tubular member. The first side top assembly 24 and the second side top assembly 25 are assembled on the support base 21, and perform radial sliding movement under the driving force of the jacking mechanism 27. The third side cap assembly 26 is removably secured to the roll-over stand 22. The roll-over stand 22 is hinged on the support base 21 in a freely turnable manner, and the posture is locked by the locking component 23. When the first and second side

top assemblies

24 and 25 are adjusted to the position by radial displacement relative to the supporting base 21 and the third side top assembly 26 is turned over relative to the supporting base 21 along with the roll-over stand 22, the first and second side

top assemblies

24 and 25 and the third side top assembly 26 simultaneously contact the outer sidewall of the pre-clamped tubular member. Through adopting above-mentioned technical scheme to set up, it borrows simultaneously to put centre gripping frock 2 and right side and puts centre gripping frock 3 and realize support, the centre gripping to the tubulose piece, and it is fixed especially to be applicable to the clamping of the tubulose piece that length is big and weight is big. In addition, the whole clamping operation of the tubular part is very convenient and fast, and the clamping device is suitable for tubular parts of various specifications, and the design target that the tubular part clamping device has a large application range is realized.

The working principle of the tubular member clamping device is as follows: before the clamping operation of the tubular member is performed, firstly, the outer diameter value of the tubular member needs to be measured, then the tubular member simultaneously traverses the left clamping tool 2 and the right clamping tool 3, then the jacking mechanism 27 acts to push the first side jacking component 24 and the second side jacking component 25 to perform radial displacement motion (the radial displacement is obtained by converting the outer diameter value of the tubular member), so that the central axis of the tubular member is coincided with the preset theoretical central line, then the roll-over stand 22 is rotated until the third side jacking component 26 is in jacking contact with the outer side wall of the tubular member, and finally, the lock component 23 is used for performing posture locking on the roll-over stand 22, so that the reliable clamping of the tubular member is realized.

As a further optimization of the structure of the above-described tubular member clamping device, as shown in fig. 10, the first lateral ram assembly 24 includes a first lateral ram block 241 and a first screw unit 242. The first screw unit 242 is composed of a plurality of first screws symmetrically inserted at both sides of the first side top block 241. As shown in fig. 11, the second sidetop assembly 25 includes a second sidetop block 251 and a second screw unit 252. The second screw unit 252 is composed of a plurality of second screws symmetrically inserted at both sides of the second side top block 251. A first oblique strip-shaped sliding notch 211 adapted to the first screw and a second oblique strip-shaped sliding notch 212 adapted to the second screw are respectively formed in the support base 21 (as shown in fig. 6). The jacking mechanism 27 comprises a jacking plate 271 and a linear driving unit 272. The upper plane of the ejector plate 271 is simultaneously abutted by the first side top block 241 and the second side top block 251. The top pushing plate 271 moves up and down under the driving force of the linear driving unit 272 to simultaneously drive the first side pushing assembly 24 and the second side pushing assembly 25 to perform radial sliding movement, and at the same time, the first screw and the second screw respectively move along the first oblique strip-shaped sliding gap 211 and the second oblique strip-shaped sliding gap 212 in a one-to-one correspondence manner. Therefore, on the premise of ensuring that the tubular member clamping device has a very simple design structure and reducing the manufacturing difficulty and the assembling difficulty, the synchronism, the accuracy and the quick-reading responsiveness of the first side jacking assembly 24 and the second side jacking assembly 25 in the sliding motion are effectively ensured.

In order to ensure that the first side top assembly 24, the second side top assembly 25 and the third side top assembly 26 have a larger clamping area relative to the tubular member and reduce the probability of the tubular member being locally depressed due to excessive pressure as much as possible, as a further optimization of the structure of the tubular member clamping device, as shown in fig. 5, 10 and 11, a first arc-shaped top contact surface 2411 and a second arc-shaped top contact surface 2511 which are matched with the outer diameter of the pre-clamped tubular member are respectively formed at the free end parts of the first side top block 241 and the second side top block 251. In addition, a third arc-shaped top contact surface 261 matched with the outer diameter of the pre-clamping tubular member is formed on the third side top component 26.

As is known, after a period of application, the first arc top contact surface 2411, the second arc top contact surface 2511 and the third arc top contact surface 261 are inevitably worn, and in the past, along with the increase of the wear amount, the relative position precision of the central axis of the tubular member is inevitably influenced, and the normal execution of the subsequent processing process is further influenced. In view of this, the first, second and third arcuate contact surfaces 2411, 2511, 261 may be provided with a wear resistant coating (not shown).

As is known, the linear driving unit 272 can adopt various design structures to realize the pushing of the pushing plate 271, but an embodiment with a simple design structure, which is easy to implement and subsequently facilitates the maintenance operation is proposed herein, specifically as follows: as shown in fig. 4 and 5, the linear driving unit 272 preferably includes a bearing block 2721 and a screw 2722. The bearing block 2721 is detachably fixed in the inner cavity of the support base 21, and is provided with a threaded hole adapted to the screw 2722. When the screw 2722 is rotated in the circumferential direction, the top plate 271 is directly pushed by the upper free end thereof.

Finally, as shown in fig. 7, 8 and 9, the locking assembly 23 is preferably composed of an upper fixing seat 231, a lower fixing seat 232, a swing arm 233, a force-bearing shaft 234 and a U-shaped tightening member 235. The U-shaped fastening member 235 is a bent member, and is formed by connecting a first lateral section 2351, a transverse section 2352 and a second lateral section 2353 in sequence. The upper fixing seat 231 and the lower fixing seat 232 are detachably fixed to the roll-over stand 22 and the support seat 21, respectively, and are disposed opposite to each other in the vertical direction. The swing arm 233 is hinged to the lower fixing base 232 and can be freely lifted. The bearing shaft 234 traverses the swing arm 233, and has a first mounting hole and a second mounting hole for inserting the first side section 2351 and the second side section 2353. The upper holder 231 has a limiting groove 2311 matching with the transverse section 2352. When the swing arm 233 is lifted, the U-shaped applicator 235 is dragged, and at the same time, the transverse section 2352 enters/departs from the limit groove 2311 to realize the locking/unlocking operation of the posture of the flip frame 22, the whole operation process is quick and rapid, and the locking assembly 23 has a self-locking function, thereby avoiding the occurrence of the phenomenon that the left clamping tool 2 and the right clamping tool 3 are accidentally loosened due to the action of the processing exciting force of the subsequent tubular member.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tubular member clamping device is characterized by comprising a bottom plate, a left clamping tool and a right clamping tool; the left clamping tool and the right clamping tool are detachably fixed on the bottom plate and are oppositely arranged along the left and right directions; the left clamping tool and the right clamping tool are identical in design structure, and only for the left clamping tool, the left clamping tool comprises a supporting seat, a turnover frame, a locking assembly, a first side top assembly, a second side top assembly, a third side top assembly and a jacking mechanism; the first side top assembly, the second side top assembly and the third side top assembly are uniformly distributed in the circumferential direction around the theoretical central axis of the pre-clamping tubular part; the first side jacking assembly and the second side jacking assembly are assembled on the supporting seat and perform radial sliding movement under the action of the driving force of the jacking mechanism; the third side top assembly is detachably fixed on the turnover frame; the turnover frame can be hinged on the supporting seat in a freely-turnover manner, and the posture of the turnover frame is locked by the locking component; the first side top assembly, the second side top assembly and the third side top assembly are respectively provided with a first arc-shaped top contact surface, a second arc-shaped top contact surface and a third arc-shaped top contact surface which are all matched with the outer diameter of the pre-clamping tubular part in a one-to-one correspondence manner; when the first side top assembly and the second side top assembly are adjusted in place relative to the radial displacement of the supporting seat, and the third side top assembly follows the overturning frame and is overturned in place relative to the supporting seat, the first arc-shaped top contact surface, the second arc-shaped top contact surface and the third arc-shaped top contact surface simultaneously contact the outer side wall of the pre-clamping tubular part in a propping manner.

2. The tubular clamping device of claim 1 wherein said first lateral abutment assembly comprises a first lateral abutment block and a first screw unit; the first screw unit is composed of a plurality of first screws symmetrically inserted into two sides of the first side top block; the second side top component comprises a second side top block and a second screw unit; the second screw unit is composed of a plurality of second screws symmetrically inserted into two sides of the second side top block; a first inclined strip-shaped sliding notch matched with the first screw and a second inclined strip-shaped sliding notch matched with the second screw are respectively formed in the supporting seat; the jacking mechanism comprises a jacking plate, a sliding plate and a linear driving unit; the sliding plate is detachably fixed on the upper plane of the ejector plate and is simultaneously abutted by the first side ejector block and the second side ejector block; the top pushing plate and the sliding plate perform displacement motion along the up-and-down direction under the action of the driving force of the linear driving unit so as to simultaneously drive the first side jacking assembly and the second side jacking assembly to perform radial sliding motion; the first arc top contact surface and the second arc top contact surface are respectively and directly formed on the first side ejector block and the second side ejector block in a one-to-one correspondence mode.

3. The tubular clamping device of claim 2 wherein the linear drive unit comprises a bearing block, a threaded rod; the bearing block is detachably fixed in the inner cavity of the supporting seat, and a threaded hole matched with the screw rod is formed in the bearing block; when the screw rod is rotated in the circumferential direction, the top pushing plate is directly pushed by the free end of the screw rod.

4. The tubular clamping device of any one of claims 1-3 wherein the locking assembly comprises an upper mount, a lower mount, a swing arm, a bearing shaft, and a U-shaped applicator; the U-shaped fastening piece is a bending piece and is formed by connecting a first lateral section, a transverse section and a second lateral section in sequence; the upper fixed seat and the lower fixed seat are detachably fixed on the roll-over stand and the supporting seat respectively and are oppositely arranged along the vertical direction; the swing arm is hinged on the lower fixed seat and can be freely lifted; the bearing shaft penetrates through the swing arm and is provided with a first mounting hole and a second mounting hole which are respectively used for inserting and matching the first side section and the second side section; the upper fixed seat is provided with a limiting groove matched with the transverse section; when the swing arm is lifted, the U-shaped applicator is dragged, and meanwhile, the transverse section enters/departs from the limiting groove to realize the locking/unlocking operation of the posture of the roll-over stand.

5. A tubular clamping device according to any one of claims 1-3, wherein the first, second and third arcuate top contact surfaces are provided with a wear resistant coating.