CN110921567B - Locking device of lifting platform - Google Patents
Locking device of lifting platform Download PDFInfo
- Publication number
- CN110921567B CN110921567B CN201911202150.XA CN201911202150A CN110921567B CN 110921567 B CN110921567 B CN 110921567B CN 201911202150 A CN201911202150 A CN 201911202150A CN 110921567 B CN110921567 B CN 110921567B
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- China
- Prior art keywords
- ratchet structure
- lifting platform
- rack
- connecting rod
- base
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- 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Abstract
The invention relates to the technical field of transportation or lifting tools, in particular to a lifting platform. A locking device for a lifting platform, comprising: the locking mechanism comprises a base, a rack and a locking mechanism; the base is used for providing support for the lifting of the lifting platform; the rack is longitudinally arranged on one side of the base; the locking mechanism is fixedly connected with the lifting platform and can lift along the base along with the lifting platform; the locking mechanism includes: a ratchet structure; the ratchet structure is matched with the rack, when the ratchet structure is meshed with the rack, the lifting platform is locked, and when the ratchet structure is disengaged from the rack, the lifting platform is unlocked. The platform locking device drives the ratchet structure to act through the driver, finally realizes the locking of the platform through the meshing of the ratchet structure and the rack, and has the advantages of high automation degree, low labor intensity and high locking reliability.
Description
Technical Field
The invention relates to the technical field of transportation or lifting tools, in particular to a lifting platform.
Background
In practical production, many lifting platforms can be stopped at any position within a certain height range, and reliable locking of the lifting platforms is required, that is, the lifting platforms cannot be displaced in any form in a horizontal plane. And traditional lift platform locking device is mostly manual locking device, and manual locking device intensity of labour is big, and the locking reliability is low.
Therefore, the problem to be solved by the prior art is to provide a lifting platform locking device which is low in labor intensity and high in locking reliability.
Disclosure of Invention
The purpose of the invention is: aiming at the defects of the prior art, the locking device of the lifting platform is provided.
The technical scheme of the invention is as follows: a locking device for a lifting platform, comprising: base, rack and locking mechanical system.
The base is fixedly installed on the ground and used for providing support for lifting of the lifting platform.
The rack is longitudinally installed on one side of the base.
The locking mechanism is fixedly connected with the lifting platform and can lift along the base along with the lifting platform; the locking mechanism includes: a ratchet structure; the ratchet structure is matched with the rack: when the ratchet structure is meshed with the rack, the lifting platform is locked, and when the ratchet structure is disengaged from the rack, the lifting platform is unlocked.
On the basis of the above scheme, further, the locking mechanism further comprises: the device comprises a base, a sliding sleeve and a driver; the base is fixedly connected with the lifting platform; the sliding sleeve is arranged on the base; the ratchet structure is arranged in the sliding sleeve and is in sliding fit with the sliding sleeve; the driver is used for driving the ratchet structure to move back and forth in the sliding sleeve so as to realize the meshing/disengaging of the ratchet structure and the rack.
Furthermore, the front end of the ratchet structure is a ratchet, the rear end of the ratchet structure is provided with a long circular hole, and a sliding connecting pin is arranged in the long circular hole; the driver is installed on the base, the actuating end of the driver is respectively hinged with one end of the front connecting rod and one end of the rear connecting rod, the other end of the front connecting rod is hinged with the sliding connecting pin, and the other end of the rear connecting rod is hinged with the rear end of the sliding sleeve. The ratchet structure, the sliding connecting pin, the front connecting rod, the rear connecting rod and the driver form a mechanism similar to a crank sliding block; when the driver drives the hinge points of the front connecting rod and the rear connecting rod to move downwards, the ratchet structure is pulled to move backwards, and further, the ratchets of the ratchet structure are disengaged from the racks, so that the lifting platform is unlocked; when the driver drives the hinge points of the front connecting rod and the rear connecting rod to move upwards, the ratchet structure is pushed to move forwards, so that the ratchets of the ratchet structure are meshed with the racks, and the locking of the lifting platform is realized; when the driver moves upwards to the maximum stroke, the front connecting rod and the rear connecting rod are collinear, and the connecting rod mechanism is located at a dead point position, so that the locking reliability is ensured.
On the basis of the scheme, a spring is further arranged in the sliding sleeve; the spring sets up in the both sides of sliding sleeve, and the sliding sleeve is connected to the one end of spring, and the other end is connected at the ratchet structure rear end. When the driver pulls the ratchet structure to move backwards, and further the ratchet of the ratchet structure is disengaged from the rack, the action force of the spring needs to be overcome firstly, and further the locking reliability is ensured.
On the basis of the scheme, further, slide ways are arranged on the bases on the two sides of the rack; the slide way provides guidance and support for the lifting of the lifting platform; the locking mechanism is also provided with rollers which are arranged on two sides of the base, and the locking mechanism is matched with the slide way in a rolling way through the rollers.
In the above scheme, specifically, the slide way is composed of two symmetrical groove-shaped structures.
In the above scheme, the actuator is specifically an electric cylinder or a hydraulic cylinder.
Has the advantages that:
the platform locking device drives the ratchet structure to act through the driver, finally realizes the locking of the platform through the meshing of the ratchet structure and the rack, and has the advantages of high automation degree, low labor intensity and high locking reliability.
Drawings
FIG. 1 is a schematic structural view of the present invention when unlocked;
FIG. 2 is a schematic structural view of the locking mechanism of the present invention;
FIG. 3 is a top view of the base, rack, and slide of the present invention;
FIG. 4 is a schematic view of the locking mechanism of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is a left side view of FIG. 4;
in the figure: 1-base, 2-rack, 3-slideway, 4-locking mechanism, 41-sliding sleeve, 42-rear connecting rod, 43-sliding connecting pin, 44-front connecting rod, 45-ratchet structure, 46-driver, 47-base, 48-roller and 49-spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
referring to fig. 1, 2 and 3, a locking device for a lifting platform comprises: base 1, rack 2 and locking mechanism 4.
The base 1 is fixedly installed on the ground and used for providing support for lifting of the lifting platform.
The rack 2 is longitudinally installed at one side of the base 1.
Further, a slide rail 3 can be arranged on the base 1 at two sides of the rack 2; the slide 3 provides direction and support for the lift of lift platform. In this example, the chute 3 is formed of two symmetrical channel structures.
The locking mechanism 4 is fixedly connected with the lifting platform, and the locking mechanism 4 is lifted along the slide way 3 along with the lifting platform; the lock mechanism 4 includes: a ratchet structure 45; the ratchet structure 45 is matched with the rack 2, when the ratchet structure 45 is meshed with the rack 2, the lifting platform is locked, and when the ratchet structure 45 is disengaged from the rack 2, the lifting platform is unlocked. The actuator 46 may be an electric or hydraulic cylinder.
Example 2:
on the basis of embodiment 1, the structure of the locking mechanism 4 is specifically defined:
referring to fig. 4, 5 and 6, the locking mechanism 4 includes: ratchet structure 45, base 47, sliding sleeve 41, driver 46, roller 48, and spring 49.
The base 47 is fixedly connected with the lifting platform; the sliding sleeve 41 is arranged on the base 47; the ratchet structure 45 is arranged in the sliding sleeve 41 and is in sliding fit with the sliding sleeve 41; the driver 46 is used to move the ratchet structure 45 back and forth within the sliding sleeve 41 to achieve engagement/disengagement of the ratchet structure 45 with the rack 2.
The spring 49 is disposed on both sides of the sliding sleeve 41, and one end of the spring 49 is connected to the sliding sleeve 41 and the other end is connected to the rear end of the ratchet structure 45. When the driver 46 pulls the ratchet structure 45 to move backward and further disengages the ratchet teeth of the ratchet structure 45 from the rack 2, the acting force of the spring 49 needs to be overcome first, and the locking reliability is further ensured.
The rollers 48 are arranged on two sides of the base 47, in this example, two sets of rollers are arranged, and the locking mechanism 4 is in rolling fit with the slideway 3 through the rollers 48.
Example 3:
on the basis of embodiment 2, the structure of the locking mechanism 4 is further defined:
referring to fig. 4, 5 and 6, the front end of the ratchet structure 45 is a ratchet, the rear end is provided with a long circular hole, and a sliding connecting pin 43 is arranged in the long circular hole; the driver 46 is installed on the base 47, the actuating end of the driver 46 is hinged with one end of the front link 44 and one end of the rear link 42 respectively, the other end of the front link 44 is hinged with the sliding connecting pin 43, and the other end of the rear link 42 is hinged with the rear end of the sliding sleeve 41. The ratchet structure 45, the sliding connecting pin 43, the front connecting rod 44, the rear connecting rod 42 and the driver 46 form a mechanism similar to a crank sliding block; when the driver 46 drives the hinge points of the front connecting rod 44 and the rear connecting rod 42 to move downwards, the ratchet structure 45 is pulled to move backwards, and further, the ratchets of the ratchet structure 45 are disengaged from the rack 2, so that the lifting platform is unlocked; when the driver 46 drives the hinge points of the front connecting rod 44 and the rear connecting rod 42 to move upwards, the ratchet structure 45 is pushed to move forwards, and further, the ratchet of the ratchet structure 45 is meshed with the rack 2, so that the lifting platform is locked; when the driver 46 moves upward to the maximum stroke, the front link 44 and the rear link 42 are collinear, and the link mechanism is located at the dead center position, thereby ensuring the reliability of locking.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (4)
1. The utility model provides a locking device of lift platform which characterized in that: the method comprises the following steps: the device comprises a base (1), a rack (2) and a locking mechanism (4);
the base (1) is used for providing support for lifting of the lifting platform;
the rack (2) is longitudinally arranged on one side of the base (1);
the locking mechanism (4) is fixedly connected with the lifting platform, and the locking mechanism (4) is lifted along with the lifting platform along the base (1);
the locking mechanism (4) comprises: a ratchet structure (45); the ratchet structure (45) is matched with the rack (2): when the ratchet structure (45) is meshed with the rack (2), the lifting platform is locked, and when the ratchet structure (45) is disengaged from the rack (2), the lifting platform is unlocked;
the locking mechanism (4) further comprises: a base (47), a sliding sleeve (41) and a driver (46); the base (47) is fixedly connected with the lifting platform; the sliding sleeve (41) is arranged on the base (47); the ratchet structure (45) is arranged in the sliding sleeve (41) and is in sliding fit with the sliding sleeve (41); the driver (46) is used for driving the ratchet structure (45) to move so as to realize the engagement/disengagement of the ratchet structure (45) and the rack (2);
the front end of the ratchet structure (45) is a ratchet, the rear end of the ratchet structure is provided with a long circular hole, and a sliding connecting pin (43) is arranged in the long circular hole; the driver (46) is installed on the base (47), the actuating end of the driver (46) is hinged with one end of the front connecting rod (44) and one end of the rear connecting rod (42) respectively, the other end of the front connecting rod (44) is hinged with the sliding connecting pin (43), and the other end of the rear connecting rod (42) is hinged with the rear end of the sliding sleeve (41);
when the driver (46) drives the hinged point of the front connecting rod (44) and the rear connecting rod (42) to move upwards, the ratchet structure (45) is pushed to move forwards, and further, the ratchet of the ratchet structure (45) is meshed with the rack (2), so that the lifting platform is locked; when the driver (46) moves upwards to the maximum stroke, the front connecting rod (44) and the rear connecting rod (42) are collinear, and the front connecting rod (44) and the rear connecting rod (42) are located at dead center positions;
when the driver (46) drives the hinged point of the front connecting rod (44) and the rear connecting rod (42) to move downwards, the ratchet structure (45) is pulled to move backwards, and further, the ratchets of the ratchet structure (45) are disengaged from the rack (2), so that the lifting platform is unlocked;
a spring (49) is also arranged in the sliding sleeve (41); one end of the spring (49) is connected with the sliding sleeve (41), and the other end of the spring is connected with the rear end of the ratchet structure (45); when the driver (46) pulls the ratchet structure (45) to move backwards, and further the ratchet of the ratchet structure (45) is disengaged from the rack (2), the acting force of the spring (49) needs to be overcome firstly.
2. A locking device for a lifting platform according to claim 1, characterised in that: a slide way (3) is arranged on the base (1) at two sides of the rack (2); the locking mechanism (4) is further provided with rollers (48), the rollers (48) are arranged on two sides of the base (47), and the locking mechanism (4) is matched with the slide way (3) in a rolling mode through the rollers (48).
3. A locking device for a lifting platform according to claim 2, characterised in that: the slideway (3) is composed of two symmetrical groove-shaped structures.
4. A locking device for a lifting platform according to claim 1, characterised in that: the driver (46) is an electric cylinder or a hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911202150.XA CN110921567B (en) | 2019-11-29 | 2019-11-29 | Locking device of lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911202150.XA CN110921567B (en) | 2019-11-29 | 2019-11-29 | Locking device of lifting platform |
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| Publication Number | Publication Date |
|---|---|
| CN110921567A CN110921567A (en) | 2020-03-27 |
| CN110921567B true CN110921567B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911202150.XA Active CN110921567B (en) | 2019-11-29 | 2019-11-29 | Locking device of lifting platform |
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| CN (1) | CN110921567B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214456517U (en) * | 2020-12-18 | 2021-10-22 | 江西洪都航空工业集团有限责任公司 | Lifting platform |
| CN114322068B (en) * | 2022-03-02 | 2022-05-06 | 潍坊昌大建设集团有限公司 | Narrow space installation device of tuber pipe machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100436305C (en) * | 2006-06-22 | 2008-11-26 | 武汉理工大学 | Lifting device in serial planet gears in multistage |
| CN100526202C (en) * | 2007-04-10 | 2009-08-12 | 陈定方 | Vertical lifting and locking device |
| CN205755892U (en) * | 2016-07-12 | 2016-12-07 | 陈雯雯 | Multifunctional stereo growing and cultivation frame |
| CN207511798U (en) * | 2017-10-16 | 2018-06-19 | 宋敏 | A kind of Intelligent manual elevation and subsidence mechanical controller |
| CN208279249U (en) * | 2018-05-17 | 2018-12-25 | 华强方特（深圳）科技有限公司 | Lifting drive and hoistable platform with lifting drive |
| CN109650293A (en) * | 2019-02-20 | 2019-04-19 | 深圳市智佳能自动化有限公司 | A kind of locking disconnected safety device of mechanical chain |
| CN109867227B (en) * | 2019-04-16 | 2020-09-08 | 江苏健雄电气安装工程有限公司 | Installation device for transformer construction |
| CN110316676B (en) * | 2019-07-16 | 2020-06-23 | 浙江传媒学院 | College library book collecting and arranging device |
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