CN107322255B - Lifting mechanism - Google Patents
Lifting mechanism Download PDFInfo
- Publication number
- CN107322255B CN107322255B CN201710576740.3A CN201710576740A CN107322255B CN 107322255 B CN107322255 B CN 107322255B CN 201710576740 A CN201710576740 A CN 201710576740A CN 107322255 B CN107322255 B CN 107322255B
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- CN
- China
- Prior art keywords
- guide rail
- linear
- plate
- guide
- lifting mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The invention discloses a lifting mechanism, which comprises: the device comprises a bottom plate, a guide shaft, an air cylinder, a floating joint, a connecting plate, a sliding plate, a linear guide rail assembly, a linear bearing seat, a cam bearing follower, a detection switch, a signaling block, a switch bracket and a lubrication pipeline; the cylinder body is horizontally arranged on the bottom plate; the linear guide rail assemblies are symmetrically arranged relative to the air cylinders, and guide rails of the linear guide rail assemblies are respectively connected with the two sliding plates; the cylinder piston rod is connected with the connecting plate through the floating joint; the guide shaft is vertically fixed on the bottom plate; the cam bearing followers are arranged on the linear bearing seats in pairs; the detection switch is fixed on the cylinder body through the switch bracket; the lubrication pipeline is connected with the slide block lubrication port of the linear guide rail. The invention not only can realize driving larger lifting load with smaller cylinder diameter, but also can be used for press mounting stations and has stronger vertical bearing capacity.
Description
Technical Field
The invention relates to the field of automatic assembly, in particular to a lifting mechanism.
Background
The structure of the lifting mechanism commonly used at present mainly comprises a base, an air cylinder, a floating joint, a linear bearing, a guide shaft, a positioning plate, a positioning pin, a supporting block and a detection switch, wherein the cylinder body of the air cylinder is normally vertically fixed on the base, a piston rod is connected with the positioning plate through the floating joint, the linear bearing arranged on the base is matched with the guide shaft vertically arranged on the positioning plate to play a guiding role, the positioning pin, the supporting block is arranged on the positioning plate to realize the positioning of a workpiece, the lifting or descending action is realized through the switching of the air inlet side of the air cylinder, and the detection switch is used for detecting and monitoring to realize corresponding electric control.
It is not difficult to find out by analysis of the prior art that it has mainly the following two problems: 1. the technology is realized in a cylinder direct lifting mode, namely the output of the cylinder is directly related to the output of the lifted mass, and the output of the cylinder is required to be far greater than the lifted mass so as to be reliably lifted. Lifting of large masses means that large forces are required, i.e. large bore cylinders, which means a large installation space. 2. The lifting terminal position of the technology cannot be kept stable, when the lifting state is realized, the rodless side of the air cylinder is kept in an inflated state, and when the lifting mechanism is subjected to a large vertical load due to the compressibility of air, a trace amount of yielding occurs. When the mechanism is applied to vertical press fitting or high-precision detection stations, the yielding can have a large influence on the press fitting or detection results.
Disclosure of Invention
Aiming at the defect that the lifting force in the existing lifting mechanism depends on the cylinder diameter of a cylinder and the lifting terminal position cannot be stably maintained, the invention provides the lifting mechanism which has the advantages of compact structure and high bearing capacity.
The technical scheme for solving the technical problems is as follows: a lifting mechanism comprising: the device comprises a bottom plate, a guide shaft, an air cylinder, a floating joint, a connecting plate, a sliding plate, a linear guide rail assembly, a linear bearing seat, a cam bearing follower, a detection switch, a signaling block, a switch bracket and a lubrication pipeline; wherein: the cylinder body is horizontally arranged on the bottom plate; the linear guide rail assembly is symmetrically arranged relative to the air cylinder, the sliding blocks of the linear guide rail assembly are fixedly connected with the bottom plate, and the guide rails of the linear guide rail assembly are respectively connected with the two sliding plates; the cylinder piston rod is connected with the connecting plate through a floating joint; the connecting plate is connected with the two sliding plates; the guide shaft is vertically fixed on the bottom plate; the linear bearing is arranged in the linear bearing seat and matched with the guide shaft to realize the vertical up-down guide of the mechanism; the cam bearing followers are arranged on the linear bearing seats in pairs and are matched with the guide grooves on the sliding plate; the detection switch is fixed on the cylinder body through a switch bracket; the transmitting block is fixed on the sliding plate; the lubrication pipeline is connected with the slide block lubrication port of the linear guide rail.
Preferably, the bottom plate is provided with positioning and mounting holes for mounting the sliding blocks and the guide shafts of the cylinder body and the linear guide rail assembly.
Preferably, the sliding plate is provided with a guide groove, a guide rail mounting groove and an end surface connecting hole, wherein the guide groove is matched with the cam bearing follower, so that the sliding plate can flexibly roll in the groove; the guide rail mounting groove is used for mounting a guide rail of the linear guide rail assembly; the two sliding plates and the connecting plate are connected into a whole through the end surface connecting hole.
Preferably, the linear bearing seat is provided with a linear bearing positioning and mounting hole, a cam bearing follower positioning and mounting hole and a workpiece positioning pin mounting and positioning hole which are respectively used for positioning and mounting the linear bearing, the cam bearing follower, the workpiece positioning pin hole and the supporting column.
The working state of the invention is as follows: when lifting, the rodless side enters the air cylinder, the piston rod stretches out, the sliding plate is pulled by the connecting plate to move forward along the advancing direction of the piston rod, the cam bearing follower rolls upwards along the guide groove of the sliding plate to drive the linear bearing seat to move upwards, the force increasing lifting action is realized, and the cam bearing follower stops in the horizontal section of the guide groove after the force increasing lifting action is in place, so that the air cylinder can bear larger vertical load.
The beneficial effects of the invention are as follows: the invention has compact structure and large bearing capacity. The device not only can realize driving larger lifting load with smaller cylinder diameter, but also can be used for press mounting stations and has stronger vertical bearing capacity.
Drawings
The invention is further illustrated by the following figures.
FIG. 1 is a schematic diagram of the axial structure of the present invention.
Fig. 2 is an isometric view of the skateboard.
Fig. 3 is an isometric view of a linear bearing housing assembly.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention. The experimental methods, in which specific conditions are not noted in the following examples, were selected according to conventional methods and conditions, or according to the commercial specifications.
Example 1
As shown in fig. 1, a lifting mechanism includes: the device comprises a bottom plate 1, a guide shaft 2, a cylinder 3, a floating joint 4, a connecting plate 5, a sliding plate 6, a linear guide rail assembly 7, a linear bearing 8, a linear bearing seat 9, a cam bearing follower 10, a detection switch 11, a signaling block 12, a switch bracket 13 and a lubrication pipeline 14.
The bottom plate 1 is provided with positioning mounting holes for mounting a cylinder body of the air cylinder 3, a sliding block of the linear guide rail assembly 7 and the guide shaft 2. The cylinder body of the air cylinder 3 is horizontally arranged on the bottom plate 1; the linear guide rail assembly 7 is symmetrically arranged relative to the air cylinder, the sliding blocks of the linear guide rail assembly are fixedly connected with the bottom plate 1, and the guide rails of the linear guide rail assembly are respectively connected with the two sliding plates 6; the piston rod of the air cylinder 3 is connected with the connecting plate 5 through the floating joint 4; the connecting plate 5 is connected with the two sliding plates 6; the guide shaft 2 is vertically fixed on the bottom plate 1; the linear bearing 8 is arranged in the linear bearing seat 9 and matched with the guide shaft 2 to realize vertical up-down guide of the mechanism; the cam bearing followers 10 are arranged on the linear bearing seats 9 in pairs and are matched with the guide grooves 6c on the sliding plate 6; the detection switch 11 is fixed on the cylinder body of the cylinder 3 through a switch bracket 13; the signaling block 12 is fixed on the slide plate 6; the lubrication pipeline 14 is connected with a slide block lubrication port of the linear guide rail 7.
As shown in fig. 2, the sliding plate 6 is provided with a guide groove 6c, a guide rail mounting groove 6b and an end surface connecting hole 6a, wherein the guide groove 6c is matched with the cam bearing follower 10 so as to enable the cam bearing follower to roll flexibly in the groove, the guide groove 6c consists of horizontal grooves at two ends and a middle chute, the horizontal grooves are used for static bearing, the middle chute is used for motion reinforcement, in the example, the chute angle is close to 20 degrees, and the theoretical reinforcement ratio is about 2.7; an opening 6d is arranged above the guide groove so as to facilitate the disassembly and assembly of the cam bearing follower 10; the guide rail mounting groove 6b is used for mounting the guide rail of the linear guide rail assembly 7; the slide plate and the connecting plate 5 are integrated through the end surface connecting hole 6 a. The lifting mechanism is provided with two sliding plates which are bilateral symmetry pieces.
The linear bearing housing 9 as shown in fig. 3 is provided with a linear bearing positioning and mounting hole, a cam bearing follower positioning and mounting hole, a workpiece positioning pin mounting and positioning hole 9a for positioning and mounting the linear bearing 8 and the cam bearing follower 10, and a workpiece positioning pin hole and a support column (omitted in the drawing), respectively. The dowel holes of the work piece are disposed directly above the cam bearing follower to directly transfer the load.
The vertical guide pair formed by the linear bearing 8 and the guide shaft 2 enables the linear bearing seat assembly shown in fig. 3 to move vertically only up and down.
The cam bearing follower 10 and the guide groove 6c of the sliding plate 6 are always tangent under the thrust action of the air cylinder 3 in the lifting state, and the linear bearing seat assembly shown in fig. 3 moves upwards in a reinforcing way. When the cam bearing follower 10 reaches the upper horizontal section of the guide groove 6c of the slide plate 6, the linear bearing housing assembly position is kept constant, i.e., stable end position of the lifted state is achieved. The mechanism can bear larger load, and the load force is transmitted to the linear bearing seat 9 through the workpiece positioning pin and the supporting column (omitted in the figure), the sliding plate 6 through the cam bearing follower 10 and finally the linear guide rail assembly 7 and the bottom plate 1.
The detection switch 11 sends signals through the induction sending block 12 so that the electrical system can determine the current state of the mechanism.
The lubrication pipeline 14 can realize lubrication maintenance on the sliding blocks of the linear guide rail assembly 7.
The working state is as follows: when lifting, the rodless side enters the air cylinder, the piston rod stretches out, the sliding plate is pulled by the connecting plate to move forward along the advancing direction of the piston rod, the cam bearing follower rolls upwards along the guide groove of the sliding plate to drive the linear bearing seat to move upwards, the force increasing lifting action is realized, and the cam bearing follower stops in the horizontal section of the guide groove after the force increasing lifting action is in place, so that the air cylinder can bear larger vertical load.
Claims (6)
1. A lifting mechanism, comprising: the device comprises a bottom plate, a guide shaft, an air cylinder, a floating joint, a connecting plate, a linear bearing seat, a cam bearing follower, a detection switch, a signaling block, a switch bracket and a lubrication pipeline; the cylinder body is horizontally arranged on the bottom plate;
it is characterized by also comprising a sliding plate and a linear guide rail component,
the linear guide rail assembly is symmetrically arranged relative to the air cylinder, the sliding blocks of the linear guide rail assembly are fixedly connected with the bottom plate, and the guide rails of the linear guide rail assembly are respectively connected with the two sliding plates; the cylinder piston rod is connected with the connecting plate through the floating joint; the connecting plate is connected with the two sliding plates; the guide shaft is vertically fixed on the bottom plate; the linear bearing is arranged in the linear bearing seat and matched with the guide shaft to realize vertical up-down guide of the mechanism; the cam bearing followers are arranged on the linear bearing seats in pairs and are matched with the guide grooves on the sliding plate; the detection switch is fixed on the cylinder body through the switch bracket; the transmitting block is fixed on the sliding plate; the lubrication pipeline is connected with the slide block lubrication port of the linear guide rail,
the sliding plate (6) is provided with a guide groove (6 c), a guide rail mounting groove (6 b) and an end surface connecting hole (6 a), wherein the guide groove (6 c) is matched with the cam bearing follower (10) to enable the cam bearing follower to flexibly roll in the groove, the guide groove (6 c) consists of horizontal grooves at two ends and a middle chute, the horizontal grooves are used for static bearing, the middle chute is used for motion reinforcement,
an opening (6 d) is arranged above the guide groove, and a guide rail mounting groove (6 b) is used for mounting a guide rail of the linear guide rail assembly (7); the slide plate and the connecting plate are connected into a whole through the end surface connecting hole (6 a).
2. The lifting mechanism of claim 1, wherein the base plate is provided with positioning mounting holes for mounting the cylinder block, the slide block of the linear guide rail assembly and the guide shaft.
3. The lifting mechanism of claim 1, wherein the linear bearing housing is provided with a linear bearing positioning mounting hole, a cam bearing follower positioning mounting hole and a workpiece positioning pin mounting positioning hole.
4. A lifting mechanism according to claim 1 or 3, wherein the connecting plate is formed by connecting two of the slide plates to the connecting plate via an end surface connecting hole of the slide plate.
5. A lifting mechanism according to claim 3, wherein the slide plate has a guide slot sized to mate with the cam bearing follower.
6. The lifting mechanism of claim 4, wherein the linear bearing housing is provided with at least two workpiece locating pin mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576740.3A CN107322255B (en) | 2017-07-14 | 2017-07-14 | Lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710576740.3A CN107322255B (en) | 2017-07-14 | 2017-07-14 | Lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107322255A CN107322255A (en) | 2017-11-07 |
| CN107322255B true CN107322255B (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710576740.3A Active CN107322255B (en) | 2017-07-14 | 2017-07-14 | Lifting mechanism |
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| Country | Link |
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| CN (1) | CN107322255B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986184A (en) * | 2017-11-28 | 2018-05-04 | 重庆市川仁精密机械有限公司 | A kind of laterally jacking detent mechanism |
| CN108326532B (en) * | 2018-04-17 | 2023-06-27 | 上海先惠自动化技术股份有限公司 | AGV assembly wagon location structure for tray |
| CN110064888B (en) * | 2019-05-23 | 2023-05-09 | 浙江精功科技股份有限公司 | Expansion positioning internal support mechanism |
| CN112388224A (en) * | 2020-11-09 | 2021-02-23 | 大连奥托股份有限公司 | Positioning device for switching clamp |
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| CN102489980A (en) * | 2011-11-25 | 2012-06-13 | 长春工业大学 | Liquefied petroleum gas cylinder valve connecting piece assembling working table |
| CN104713505A (en) * | 2015-03-28 | 2015-06-17 | 贵阳瑞极精密测量有限公司 | Valve rod automatic checkout device |
| WO2016019538A1 (en) * | 2014-08-07 | 2016-02-11 | 深圳市凯卓立液压设备有限公司 | Mobile lifting machine for vehicle maintenance |
| CN205589966U (en) * | 2016-04-25 | 2016-09-21 | 郑州市军明农机销售有限公司 | Work piece barrier mechanism |
| CN106181925A (en) * | 2016-08-24 | 2016-12-07 | 宁夏共享机床辅机有限公司 | A kind of angular rotary positioning mechanism |
| CN205837293U (en) * | 2016-07-13 | 2016-12-28 | 常州节卡智能装备有限公司 | Grouping mechanism |
| CN205953412U (en) * | 2016-08-25 | 2017-02-15 | 上海先惠自动化技术股份有限公司 | Top load jacking positioning mechanism |
| CN207104230U (en) * | 2017-07-14 | 2018-03-16 | 上海天永智能装备股份有限公司 | A kind of lifting mechanism |
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2017
- 2017-07-14 CN CN201710576740.3A patent/CN107322255B/en active Active
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| CN102489980A (en) * | 2011-11-25 | 2012-06-13 | 长春工业大学 | Liquefied petroleum gas cylinder valve connecting piece assembling working table |
| WO2016019538A1 (en) * | 2014-08-07 | 2016-02-11 | 深圳市凯卓立液压设备有限公司 | Mobile lifting machine for vehicle maintenance |
| CN104713505A (en) * | 2015-03-28 | 2015-06-17 | 贵阳瑞极精密测量有限公司 | Valve rod automatic checkout device |
| CN205589966U (en) * | 2016-04-25 | 2016-09-21 | 郑州市军明农机销售有限公司 | Work piece barrier mechanism |
| CN205837293U (en) * | 2016-07-13 | 2016-12-28 | 常州节卡智能装备有限公司 | Grouping mechanism |
| CN106181925A (en) * | 2016-08-24 | 2016-12-07 | 宁夏共享机床辅机有限公司 | A kind of angular rotary positioning mechanism |
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| Publication number | Publication date |
|---|---|
| CN107322255A (en) | 2017-11-07 |
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