CN210704476U - Automatic centering clamping device - Google Patents

Automatic centering clamping device Download PDF

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Publication number
CN210704476U
CN210704476U CN201921878253.3U CN201921878253U CN210704476U CN 210704476 U CN210704476 U CN 210704476U CN 201921878253 U CN201921878253 U CN 201921878253U CN 210704476 U CN210704476 U CN 210704476U
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CN
China
Prior art keywords
centering
clamping
screw
nut
swing arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201921878253.3U
Other languages
Chinese (zh)
Inventor
颜克伦
王灿
唐萌
徐达
何聪
张文华
陈龙
周楚然
袁锡勋
阳安林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Mechanical and Electrical Polytechnic
Original Assignee
Hunan Mechanical and Electrical Polytechnic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Mechanical and Electrical Polytechnic filed Critical Hunan Mechanical and Electrical Polytechnic
Priority to CN201921878253.3U priority Critical patent/CN210704476U/en
Application granted granted Critical
Publication of CN210704476U publication Critical patent/CN210704476U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an automatic centering clamping device, which comprises a support, a screw rod, a power mechanism, a clamping part and a nut; the power mechanism is arranged on the support and is connected with the screw; the screw is provided with a positive thread and a negative thread with the opposite spiral direction to the positive thread, and the positive thread and the negative thread of the screw are respectively matched with a nut; the clamping part comprises a swing arm and a floating claw, one end of the swing arm is rotationally connected with the nut, the middle of the swing arm is rotationally connected with the support, and the other end of the swing arm is rotationally connected with the floating claw; the two clamping parts are oppositely arranged. The utility model discloses can realize that quick self-centering presss from both sides tightly to improve the hydraulic pump and disassemble efficiency, guarantee to disassemble the process reliable and stable.

Description

Automatic centering clamping device
Technical Field
The utility model belongs to the technical field of engineering machine tool equipment technique and specifically relates to an automatic centering clamping device is related to.
Background
Remanufacturing and disassembling are the primary processes of the remanufacturing process flow, and the scientific disassembling process is beneficial to resource recycling. At present, China becomes one of the countries with the largest engineering machinery output and sales volume all over the world, a hydraulic pump is used as a power element of a hydraulic system of the engineering machinery, the hydraulic system has various types, precise structure, complex manufacturing process and higher value, and efficient, flexible, nondestructive, stable and safe disassembly process and disassembly platform are needed for remanufacturing the hydraulic system. Install the hydraulic pump on disassembling the platform when the hydraulic pump is disassembled, disassemble the in-process and need use clamping device, this clamping device will realize quick self-centering and press from both sides tightly, improves and disassembles efficiency, guarantees simultaneously to disassemble the reliable and stable nature of process, and this remains further research solution.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an it is not enough with regard to overcoming prior art, provides a self-centering clamping device, the utility model discloses can realize quick self-centering and press from both sides tightly to improve the hydraulic pump and disassemble efficiency, guarantee to disassemble the process reliable and stable. In order to achieve the purpose, the utility model provides an automatic centering clamping device, which comprises a support, a screw rod, a power mechanism, a clamping part and a nut; the power mechanism is arranged on the support and is connected with the screw; the screw is provided with a positive thread and a negative thread with the opposite spiral direction to the positive thread, and the positive thread and the negative thread of the screw are respectively matched with a nut;
the clamping part comprises a swing arm and a floating claw, one end of the swing arm is rotationally connected with the nut, the middle of the swing arm is rotationally connected with the support, and the other end of the swing arm is rotationally connected with the floating claw; the two clamping parts are oppositely arranged.
Furthermore, the floating claw is of a V-shaped structure, and the other end of the swing arm is rotatably connected with the V-shaped tip end of the floating claw.
Furthermore, each clamping part comprises two swing arms, one ends of the two swing arms are respectively connected with the two side faces of the nut in a rotating mode, and the other ends of the two swing arms are respectively connected with the two side faces of the floating claw in a rotating mode.
Furthermore, the automatic centering and clamping device also comprises a centering mechanism, wherein the screw comprises a positive screw provided with the positive thread, a negative screw provided with the negative thread, and a transition head for connecting the positive screw and the negative screw; the centering mechanism comprises a first centering nut sleeved on the positive screw rod and a second centering nut sleeved on the negative screw rod.
Further, the support comprises a bottom plate, a support column and a mounting table, the support column is connected with the bottom plate and the mounting table to form an I-shaped structure, and the support column is clamped between the first centering nut and the second centering nut.
Furthermore, the centering mechanism further comprises a self-locking screw, and threaded through holes for mounting the self-locking screw are formed in the first centering nut and the second centering nut.
Further, the positive thread and the negative thread are both trapezoidal threads.
During the use, will the utility model discloses automatic centering clamping device installs on the guide rail that the platform includes is disassembled to the hydraulic pump, wherein the support removes the cooperation installation with the guide rail, and install a plurality of automatic centering clamping device side by side on the guide rail, the hydraulic pump is installed on automatic centering clamping device, thereby the different positions of a plurality of automatic centering clamping device automatic centering clamping hydraulic pump, wherein corresponding automatic centering clamping mechanism is connected with the straight line actuating mechanism that the platform includes is disassembled to the hydraulic pump, in order to promote automatic centering clamping device through straight line actuating mechanism and remove on the guide rail, thereby accomplish disassembling of hydraulic pump corresponding site for other positions, realize automatic disassembling, safety and reliability, need not the artifical instrument such as hoist and mount that adopts, very much to large-scale hydraulic pump, the whole weight of hydraulic pump is heavy, artifical disassembling, the potential safety hazard is many.
The utility model has the advantages that: the utility model discloses automatic centering clamping device can realize fast that the automatic centering of hydraulic pump is tight, and centering is accurate, and is efficient to guarantee that the hydraulic pump disassembles the process reliable and stable, it is efficient to improve the hydraulic pump and disassembles, alleviates artifical intensity of labour, labour saving and time saving, factor of safety is high.
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 these drawings without creative efforts.
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a partial cross-sectional view of fig. 2.
Fig. 4 is a perspective view of the present invention in use.
Fig. 5 is a perspective view of fig. 4 with the hydraulic pump removed.
Fig. 6 is a perspective view of fig. 5 rotated by a certain angle.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is usually placed when in use, and are used for convenience of description and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the present embodiment provides a self-centering clamping device 2, which includes a support 20, a screw 21, a power mechanism 22, a clamping portion 23, and a nut 24; the power mechanism 22 is mounted on the support 20, specifically, the power mechanism 22 is mounted on the support 20 through a bracket 28, and the power mechanism 22 is connected with the screw 21, specifically, the power mechanism 22 is connected with the screw 21 through a coupling 27; the screw 21 is provided with a positive thread and a negative thread opposite to the positive thread in the spiral direction, and the positive thread and the negative thread of the screw 21 are respectively matched with a nut 24. The clamping part 23 comprises a swing arm 230 and a floating claw 231, one end of the swing arm 230 is rotatably connected with the nut 24, the middle of the swing arm 230 is rotatably connected with the support 20, and the other end of the swing arm 230 is rotatably connected with the floating claw 231; the two clamping portions 23 are arranged oppositely.
In the present embodiment, the power mechanism 22 may be an existing electric motor or a hydraulic motor, and preferably, the power mechanism 22 is a hydraulic motor.
In this embodiment, the swing arm 230 and the support 20, the swing arm 230 and the nut 24, and the swing arm 230 and the floating pawl 231 may be hinged by using an existing hinge shaft, and of course, other existing rotation connection methods may also be used.
As shown in fig. 4-6, when in use, the automatic centering and clamping device 2 of the present embodiment is installed on the guide rail 1 included in the hydraulic pump disassembling platform, wherein the support 20 is installed in movable fit with the guide rail 1, and the guide rail 1 is installed with a plurality of automatic centering and clamping devices 2 side by side, the hydraulic pump 6 is installed on the automatic centering and clamping devices 2, so that the plurality of automatic centering and clamping devices 2 automatically center and clamp different parts of the hydraulic pump 6, wherein the corresponding automatic centering and clamping devices 2 are connected with the linear driving mechanism 3 included in the hydraulic pump disassembling platform, so as to push the automatic centering and clamping devices 1 to move on the guide rail 1 through the linear driving mechanism 3, thereby completing the disassembling of the corresponding parts of the hydraulic pump 6 relative to other parts, realizing automatic disassembling, being safe and reliable, needing no manual tools such as hoisting, and particularly for large-sized hydraulic pumps 6, the hydraulic pump 6 is heavy, and manual disassembly is realized, so that the potential safety hazard is high. Specifically, the support 20 is movably mounted with the guide rail 1, as shown in fig. 4-6, the bottom of the support 20 may be bolted to the moving platform 5, the bottom of the moving platform 5 is provided with a guide groove matched with the guide rail 1, or the bottom of the support 20 is directly provided with a guide groove matched with the guide rail 1, and the guide groove may be a rectangular groove, a dovetail groove, or the like.
As shown in fig. 4, the guide rail 1 is provided with three self-centering clamping devices 2 of the present embodiment side by side, the three self-centering clamping devices 2 sequentially clamp a left front pump body 60, a middle pump body 61 and a right rear pump body 62 which are included in the hydraulic pump 6, wherein the two linear driving mechanisms 3 are respectively connected to the two self-centering clamping devices 2 for clamping the left front pump body 60 and the right rear pump body 62. When the hydraulic pump 6 is disassembled, the middle pump body 61 is fixed under the action of the automatic centering and clamping device 2, and the two linear driving mechanisms 3 respectively drive the corresponding automatic centering and clamping devices 2 to move on the guide rail 1, so that the disassembly of the left front pump body 60 and the right rear pump body 62 relative to the middle pump body 61 is completed.
This embodiment automatic centering clamping device 2 can realize hydraulic pump 6 fast that the automatic centering is tight, and centering is accurate, and is efficient to guarantee that hydraulic pump 6 disassembles the process reliable and stable, improve hydraulic pump 6 and disassemble efficiently, alleviate artifical intensity of labour, labour saving and time saving, factor of safety is high.
The working principle of the self-centering clamping device 2 in the present embodiment is as follows: the screw 21 is driven to rotate through the power mechanism 22, so that the nuts 24 move on the screw 21, and when the hydraulic pump 6 is clamped under the action of the positive thread and the negative thread, the two nuts 24 move in opposite directions to drive the two clamping parts 23 to move in opposite directions, and the two clamping parts 23 automatically center and clamp the hydraulic pump 6; when the hydraulic pump 6 is loosened, the two nuts 24 move back to back, and the two clamping portions 23 are driven to move back to back. The embodiment effectively improves the self-centering precision under the matching action of the swing arm 230 and the floating claw 231.
In this embodiment, the floating claw 231 has a V-shaped structure, and the other end of the swing arm 230 is rotatably connected to the V-shaped tip of the floating claw 231. The floating claw 231 is of a V-shaped structure, so that clamping points can be effectively increased, the clamping force is improved, and the clamping effect is good.
In this embodiment, each clamping portion 23 includes two swing arms 230, one end of each swing arm 230 is rotatably connected to two side surfaces of the nut 24, and the other end of each swing arm 230 is rotatably connected to two side surfaces of the floating claw 231, so as to improve the structural strength and stability of the clamping portion 23, and thus improve the structural strength and clamping force of the self-centering clamping mechanism 2.
Further preferably, as shown in fig. 1 to 3, the self-centering clamping device 2 further comprises a centering mechanism, and the screw 21 comprises a positive screw 210 provided with the positive thread, a negative screw 211 provided with the negative thread, and a transition head 212 connecting the positive screw 210 and the negative screw 211; the centering mechanism includes a first centering nut 250 that is sleeved on the positive screw 210 and a second centering nut 251 that is sleeved on the negative screw 211. In this embodiment, under the action of the first centering nut 250 and the second centering nut 251, whether the symmetrical center positions of the two floating claws 231 are the center positions of the support 20 or not is checked, and in the actual operation process, parameters such as the distance between the nut 24 and the first centering nut 250, the distance between the nut 251 and the first centering nut 250, and the distance between the nut 251 and the support 20 can be measured to ensure that when the plurality of automatic centering clamping mechanisms 2 automatically center and clamp different parts of the hydraulic pump 6, the deviation of each clamping center of the plurality of automatic centering clamping mechanisms 2 is small, so as to ensure the moving straightness when the linear driving mechanism 3 drives the hydraulic pump 6 to disassemble, and avoid the defects such as scratches, bending, deadlocking and the like caused by the parts of the hydraulic pump 6, and the operation is safe, stable and reliable.
In this embodiment, the support 20 includes a bottom plate 203, a support column 202 and a mounting platform 201, the support column 202 is connected to the bottom plate 203 and the mounting platform 201 to form an i-shaped structure, and the support column 202 is sandwiched between the first centering nut 250 and the second centering nut 251. Wherein, the bottom plate 203, the supporting column 202 and the mounting platform 201 are in an integral structure, the hydraulic pump 6 is mounted on the mounting platform 201, and the two swing arms 230 are respectively connected with the two ends of the mounting platform 201 in a rotating way.
In this embodiment, the centering mechanism further includes a self-locking screw 26, and the first centering nut 250 and the second centering nut 251 are both provided with a threaded through hole for mounting the self-locking screw 26. After the symmetrical center positions of the two floating claws 231 are calibrated and the like, the self-locking screw 26 screws the screw rod 21 tightly, so that the first centering nut 250 and the second centering nut 251 are fixed relative to the screw rod 21, and when the screw rod 21 rotates, the first centering nut 250 and the second centering nut 251 rotate synchronously, and the first centering nut 250 and the second centering nut 251 cannot move on the screw rod 21.
In the present embodiment, the positive thread and the negative thread are both trapezoidal threads, and the internal thread on the corresponding nut 24 is also trapezoidal threads, so as to improve the screw transmission effect between the screw 21 and the nut 24.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. An automatic centering and clamping device is characterized by comprising a support, a screw rod, a power mechanism, a clamping part and a nut; the power mechanism is arranged on the support and is connected with the screw; the screw is provided with a positive thread and a negative thread with the opposite spiral direction to the positive thread, and the positive thread and the negative thread of the screw are respectively matched with a nut;
the clamping part comprises a swing arm and a floating claw, one end of the swing arm is rotationally connected with the nut, the middle of the swing arm is rotationally connected with the support, and the other end of the swing arm is rotationally connected with the floating claw; the two clamping parts are oppositely arranged.
2. The automatic centering and clamping device is characterized in that the floating claw is of a V-shaped structure, and the other end of the swing arm is rotatably connected with the V-shaped tip of the floating claw.
3. The automatic centering and clamping device as claimed in claim 1, wherein each clamping portion comprises two swing arms, one ends of the two swing arms are respectively and rotatably connected with two side surfaces of the nut, and the other ends of the two swing arms are respectively and rotatably connected with two side surfaces of the floating claw.
4. The self-centering clamping device as claimed in claim 1, further comprising a centering mechanism, wherein the screw comprises a positive screw provided with the positive thread, a negative screw provided with the negative thread, and a transition head connecting the positive screw and the negative screw; the centering mechanism comprises a first centering nut sleeved on the positive screw rod and a second centering nut sleeved on the negative screw rod.
5. The self-centering clamping device as claimed in claim 4, wherein the support comprises a bottom plate, a supporting column and a mounting table, the supporting column is connected with the bottom plate and the mounting table to form an I-shaped structure, and the first centering nut and the second centering nut sandwich the supporting column.
6. The self-centering clamping device according to claim 4, wherein the centering mechanism further comprises a self-locking screw, and the first centering nut and the second centering nut are provided with threaded through holes for mounting the self-locking screw.
7. A self-centering gripping device according to any of claims 1 to 6, wherein the positive and negative threads are trapezoidal threads.
CN201921878253.3U 2019-11-04 2019-11-04 Automatic centering clamping device Expired - Fee Related CN210704476U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921878253.3U CN210704476U (en) 2019-11-04 2019-11-04 Automatic centering clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921878253.3U CN210704476U (en) 2019-11-04 2019-11-04 Automatic centering clamping device

Publications (1)

Publication Number Publication Date
CN210704476U true CN210704476U (en) 2020-06-09

Family

ID=70963790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921878253.3U Expired - Fee Related CN210704476U (en) 2019-11-04 2019-11-04 Automatic centering clamping device

Country Status (1)

Country Link
CN (1) CN210704476U (en)

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200609

Termination date: 20201104

CF01 Termination of patent right due to non-payment of annual fee