CN117945318B - Up-down double-positioning lifting platform - Google Patents
Up-down double-positioning lifting platform Download PDFInfo
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- CN117945318B CN117945318B CN202410355456.3A CN202410355456A CN117945318B CN 117945318 B CN117945318 B CN 117945318B CN 202410355456 A CN202410355456 A CN 202410355456A CN 117945318 B CN117945318 B CN 117945318B
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Abstract
The invention relates to the field of lifting support platforms, in particular to an upper-lower double-positioning lifting platform which comprises a bottom plate, a platform and a traction mechanism; the platform sets up directly over the bottom plate, and traction mechanism is equipped with a plurality ofly, and every traction mechanism includes stay cord, switching subassembly, sleeve pipe, ejector pin and pull rod, and the one end of stay cord is installed on the platform, and the sleeve pipe cover is located on the stay cord, and the one end of ejector pin is installed perpendicularly on the sleeve pipe, and the other end of ejector pin rotates to set up on switching subassembly, and the both ends of pull rod rotate with switching subassembly and bottom plate respectively and be connected. Taking one of them traction mechanism as an example, through ejector pin and switching subassembly, ejector pin and the cooperation setting of stay cord, when switching subassembly is close to the stay cord on the platform, the ejector pin promotes the stay cord crooked, and the stay cord reduces the contained angle between the pulling force direction that the platform produced and the platform this moment, and the platform receives upward pulling force and reduces, and the upward movement speed of platform slows down, and the speed that this traction mechanism pulling platform risen is less than other traction mechanism, promotes the platform to be the horizontality.
Description
Technical Field
The invention relates to the field of lifting support platforms, in particular to an up-down double-positioning lifting platform.
Background
The lifting platform is a lifting machine for vertically conveying people or objects, and also refers to equipment for vertically conveying in logistics systems such as factories, automatic warehouses and the like, the application is very wide, the lifting process of the existing lifting platform is not tightly matched due to manufacturing level and process tolerance, a certain degree of activity allowance is formed between structures, so that the lifting process of the lifting platform is unstable easily, the lifting platform cannot be corrected after being inclined, and certain potential safety hazards exist.
Disclosure of Invention
Based on this, it is necessary to provide an up-down double positioning lifting platform for solving the problem that the lifting platform is unstable in lifting and cannot be corrected after being inclined at present.
The above purpose is achieved by the following technical scheme:
An upper and lower double-positioning lifting platform comprises a bottom plate, guide posts, a platform and a traction mechanism; the bottom plate is arranged on the ground, the guide posts are arranged in a plurality, the guide posts are fixedly arranged on the upper surface of the bottom plate along the vertical direction, the guide posts are uniformly distributed on the bottom plate, the platform is arranged right above the bottom plate, and the platform is in sliding connection with the guide posts along the vertical direction on the bottom plate; the traction mechanism is provided with a plurality of traction mechanisms, each traction mechanism corresponds to one guide post, each traction mechanism comprises a motor, a guide wheel, a pull rope, a switching assembly, a sleeve pipe, an ejector rod and a pull rod, the motor is fixedly installed on a bottom plate, the guide wheels are rotationally installed on the corresponding guide posts, the guide wheels are located above the platform, the rotating shafts of the guide wheels and the output shafts of the motor extend along a first direction, the first direction is the width direction of the platform, one end of the pull rope is installed on the platform, the other end of the pull rope is connected with the output shafts of the motor, the pull rope between the guide wheels and the platform forms a triangle with the guide posts and the platform, the pull rope between the motor and the platform is wound on the guide wheels, the switching assembly is slidingly arranged on the platform along a second direction, the second direction is perpendicular to the first direction, the switching assembly is located at the position of the direction of the included angle between the guide wheels and the platform, the sleeve pipe is sleeved on the pull rope between the guide wheels and the platform, the sleeve pipe is slidingly connected with the pull rope, one end of the ejector rod is vertically installed on the sleeve pipe, the other end of the ejector rod is rotationally arranged on the switching assembly, the two ends of the pull rod are rotationally connected with the switching assembly and the bottom plate respectively, and when the switching assembly moves upwards along the guide posts, and the end of the switching assembly is close to the upper end of the platform.
Preferably, the ejector rod is provided with a positioning end and an extension end, the extension end is arranged in the positioning end in a sliding manner, a first spring is arranged in the positioning end, and two ends of the first spring are respectively connected with the positioning end and the extension end.
Preferably, the guide posts and the traction mechanisms are all provided with four and are divided into a first group and a second group, each group comprises two guide posts and two traction mechanisms, the first group and the second group are rotationally symmetrical around a first axis, the first axis is perpendicular to the platform, the first axis is located at the center of the platform, the two traction mechanisms of the first group and the two traction mechanisms of the second group are in mirror symmetry with respect to a first plane, the first axis is located in the first plane, and the first plane is perpendicular to the first direction.
Preferably, a transmission shaft is arranged between the two pull rods in the first group, the transmission shaft is rotatably arranged in the bottom plate, and two ends of the transmission shaft are respectively connected with the two pull rods in the first group.
Preferably, teeth are arranged at one end of the pull rod close to the bottom plate, and one end of one pull rod in the first group close to the bottom plate is meshed with one end of one pull rod in the second group close to the bottom plate through the teeth.
Preferably, the switching assembly comprises a rotating shaft and a second spring, the platform is provided with a through groove, the through groove penetrates through the platform along the vertical direction, the through groove extends along the second direction, the through groove is perpendicular to the surface of the first direction and is provided with a groove, the length direction of the groove extends along the second direction, the rotating shaft is slidably arranged in the groove, the axis of the rotating shaft extends along the first direction, one end of the pull rod, far away from the bottom plate, is rotationally connected with the rotating shaft, one end of the push rod, far away from the sleeve, is rotationally connected with the rotating shaft, the second spring is arranged in the groove, and two ends of the second spring are respectively connected with the rotating shaft and the platform.
Preferably, the side of the bottom plate is provided with a plurality of positioning feet, and the plurality of positioning feet are used for supporting the bottom plate relative to the ground.
Preferably, the guide post is provided with a fixing part and a sliding part, the sliding part is arranged in the fixing part in a sliding manner along the vertical direction, the fixing part is arranged on the bottom plate, and the guide wheel is rotatably arranged on the sliding part.
Preferably, the bottom plate is provided with a driving wheel, and the driving wheel is contacted with the ground.
Preferably, the platform is provided with a plurality of guide wheels, each guide wheel corresponds to one stay cord, and the stay cord is wound on the guide wheel.
The beneficial effects of the invention are as follows: the lifting device comprises a plurality of traction mechanisms, wherein the platform is lifted more stably, the traction mechanisms are matched with the switching assembly through the pull rods, the switching assembly is driven by the pull rods to approach the pull ropes on the platform in the process of lifting the platform, and the pull rods are matched with the switching assembly, so that the pull ropes are pushed by the push rods to bend when the switching assembly approaches the pull ropes on the platform, at the moment, the pull force direction of the pull ropes on the platform is reduced, the upward pull force of the platform is reduced, and the lifting speed of the platform is slowed down; when one of the traction mechanisms pulls the platform to rise to a height greater than that of other positions of the platform, the platform moves upwards at a slower speed relative to the other traction mechanisms, and the other traction mechanisms can drive the platform to catch up with the platform at the position higher than the position, so that the whole platform is in a horizontal state.
Drawings
Fig. 1 is a schematic structural diagram of an up-down dual-positioning lifting platform according to an embodiment of the present invention;
FIG. 2 is a top view of an upper and lower dual-positioning lifting platform according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along the direction B-B in FIG. 2;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is a cross-sectional view of a platform of an up-down dual-positioning lifting platform provided by an embodiment of the invention;
fig. 6 is an enlarged view at C in fig. 5.
Wherein: 100. a bottom plate; 101. a guide post; 102. a platform; 201. a motor; 202. a guide wheel; 203. a pull rope; 204. a driving wheel; 205. a sleeve; 206. a push rod; 207. a pull rod; 208. a first spring; 209. a transmission shaft; 210. a rotating shaft; 211. a second spring; 212. a through groove; 213. a groove; 214. a support plate; 215. a positioning rod; 216. a top column; 217. a guide wheel; 218. and a through hole.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1 to 6, an embodiment of the present invention provides an up-down double positioning lifting platform, which comprises a bottom plate 100, a guide post 101, a platform 102 and a traction mechanism; the bottom plate 100 is arranged on the ground, the guide posts 101 are provided with a plurality of guide posts 101, the guide posts 101 are fixedly arranged on the upper surface of the bottom plate 100 along the vertical direction, the guide posts 101 are uniformly distributed on the bottom plate 100, the platform 102 is arranged right above the bottom plate 100, and the platform 102 is connected with the guide posts 101 in a sliding manner on the bottom plate 100 along the vertical direction; the traction mechanism is provided with a plurality of traction mechanisms, each traction mechanism corresponds to one guide post 101 and is arranged, each traction mechanism comprises a motor 201, a guide wheel 202, a pull rope 203, a switching assembly, a sleeve 205, a push rod 206 and a pull rod 207, the motor 201 is fixedly arranged on the bottom plate 100, the guide wheel 202 is rotatably arranged on the corresponding guide post 101, the guide wheel 202 is located above the platform 102, a rotating shaft of the guide wheel 202 and an output shaft of the motor 201 extend along a first direction, the first direction is the width direction of the platform 102, one end of the pull rope 203 is arranged on the platform 102, the other end of the pull rope 203 is connected with the output shaft of the motor 201, the pull rope 203 between the guide wheel 202 and the platform 102 and the guide post 101 and the platform 102 form a triangle, the pull rope 203 between the motor 201 and the platform 102 is wound on the guide wheel 202, the switching assembly is arranged on the platform 102 in a sliding mode along a second direction, the second direction is perpendicular to the first direction, the switching assembly is located at a position of the included angle between the guide wheel 202 and the platform 102, the sleeve 205 is sleeved on the pull rope 203 between the guide rail 202 and the platform 102, one end of the sleeve 205 is connected with the pull rod 203 in a sliding mode, the sleeve 205 is perpendicular to the sleeve 205, the sleeve 205 is arranged on the other end of the sleeve 205 and is perpendicular to the pull rod 206 and is arranged on the guide post 101 and is connected to the two ends of the rotating assemblies along the rotary shafts of the guide post 102 when the pull rod 102 and is arranged on the platform 101.
The motor 201 drives the platform 102 to lift along the guide post 101 through the pull rope 203 wound on the guide wheel 202, a plurality of traction mechanisms are arranged, the lifting of the platform 102 is more stable, the pull rod 207 drives the switching assembly to approach the pull rope 203 on the platform 102 through the matching arrangement of the pull rod 207 and the switching assembly in the process of moving up the platform 102, and the push rod 206 pushes the pull rope 203 to bend when the switching assembly approaches the pull rope 203 on the platform 102 through the matching arrangement of the push rod 206, the pull rope 203 generates a pull force to the platform 102, the included angle between the pull rope 102 and the platform 102 is reduced, the upward pull force of the platform 102 is reduced, and the upward moving speed of the platform 102 is slowed down; when one of the traction mechanisms pulls the platform 102 to rise to a height greater than that of the other positions of the platform 102, the platform 102 moves upwards at a slower speed relative to the other traction mechanisms, and the other traction mechanisms drive the platform 102 to catch up with the platform 102 at the position higher than the position, so that the platform 102 is in a horizontal state as a whole.
In this embodiment, the ejector rod 206 is provided with a positioning end and an extending end, the extending end is slidably disposed in the positioning end, a first spring 208 is disposed in the positioning end, two ends of the first spring 208 are connected with the positioning end and the extending end respectively, in the process of rotating the ejector rod 206, one end of the ejector rod 206 away from the pull rope 203 is continuously close to the pull rope 203, after the ejector rod 206 receives a larger pushing force, the pull rope 203 between the guide wheel 202 and the platform 102 can be pushed to bend, along with the continuous lifting of the platform 102, the pushing force between the pull rope 203 and the platform 102 is continuously increased, the pull rope 203 between the guide wheel 202 and the platform 102 is continuously shortened, the included angle between the pull rope 203 and the platform 102 is continuously reduced, the first spring 208 at this time is compressed, and the length of the ejector rod 206 is reduced, thereby the lifting height of the platform 102 is improved.
In this embodiment, the guide posts 101 and the traction mechanisms are all provided with four and are divided into a first group and a second group, each group includes two guide posts 101 and two traction mechanisms, the first group and the second group are rotationally symmetrical around a first axis, the first axis is perpendicular to the platform 102, and the first axis is located at the center of the platform 102, the two traction mechanisms of the first group and the two traction mechanisms of the second group are mirror symmetrical about a first plane, the first axis is located in the first plane, and the first plane is perpendicular to the first direction, and the four guide posts 101 and the traction mechanisms are respectively close to four corners of the platform 102, so that the tensile force received by the platform 102 in the rising process is dispersed and uniform, and the movement is smoother.
In this embodiment, a transmission shaft 209 is disposed between two pull rods 207 in the first group, the transmission shaft 209 is rotatably disposed in the bottom plate 100, two ends of the transmission shaft 209 are respectively connected with the two pull rods 207 in the first group, the two pull rods 207 in the first group can be synchronous in the process of rotation, the pushing forces of the two push rods 206 on the pull ropes 203 are consistent, the bending degree of the pull ropes 203 is consistent, and the probability of instability when the platform 102 rises is reduced.
In this embodiment, the end of the pull rod 207 close to the bottom plate 100 is provided with teeth, and the end of one pull rod 207 in the first group close to the bottom plate 100 is engaged with the end of one pull rod 207 in the second group close to the bottom plate 100 through the teeth, and one pull rod 207 in the first group and one pull rod 207 in the second group are located at the same side of the bottom plate 100, and the two pull rods 207 rotate simultaneously, that is, the pull rods 207 in the first group and the pull rods 207 in the second group can rotate simultaneously, so that the stability when the platform 102 moves upwards is improved, and the maximum inclination angle of the platform 102 is reduced.
In this embodiment, the switching assembly includes a rotating shaft 210 and a second spring 211, the platform 102 is provided with a through slot 212, the through slot 212 penetrates the platform 102 along the vertical direction, the through slot 212 extends along the second direction, the through slot 212 is perpendicular to the surface of the first direction and is provided with a groove 213, the length direction of the groove 213 extends along the second direction, the rotating shaft 210 is slidably disposed in the groove 213, the axis of the rotating shaft 210 extends along the first direction, one end of the pull rod 207 far away from the bottom plate 100 is rotationally connected with the rotating shaft 210, one end of the push rod 206 far away from the sleeve 205 is rotationally connected with the rotating shaft 210, the second spring 211 is disposed in the groove 213, two ends of the second spring 211 are respectively connected with the rotating shaft 210 and the platform 102, when the rotating shaft 210 is located in the middle of the groove 213, the second spring 211 is in a natural state, after the platform 102 rises to the working position, if the traction force of the platform 102 suddenly loses, the platform 102 compresses the second spring 211 in the falling process, the elastic potential energy of the second spring 211 increases, the falling speed of the platform 102 is slowed down, and the safety is improved.
In this embodiment, a plurality of positioning pins are disposed on the side surface of the bottom plate 100, the plurality of positioning pins are used for supporting the bottom plate 100 relative to the ground, so as to realize the limitation of the bottom plate 100 on the ground, each positioning pin comprises a support plate 214, a positioning rod 215 and a jack post 216, a receiving groove is disposed on the bottom plate 100 along a first direction, the receiving groove penetrates through the bottom plate 100, the receiving groove extends along the width direction of the bottom plate 100, the support plate 214 is slidably disposed in the receiving groove, a plurality of through holes 218 distributed along the length direction of the receiving groove are disposed on the support plate 214, the through holes 218 penetrate through the support plate 214, positioning holes are disposed on the bottom plate 100 and are communicated with the receiving groove, the positioning holes and the through holes 218 can be communicated, the positioning rod 215 is slidably disposed in the through holes 218, and the positioning rod 215 can be inserted into the positioning holes through the through holes 218.
In this embodiment, the guide post 101 is provided with a fixing portion and a sliding portion, the sliding portion slides along the vertical direction and is arranged in the fixing portion, the fixing portion is mounted on the bottom plate 100, the guide wheel 202 rotates and is mounted on the sliding portion, a hydraulic cylinder is mounted in the fixing portion, one end of the hydraulic cylinder is abutted with the sliding portion, the sliding portion of the guide post 101 can be pushed to slide in the fixing portion, the sliding portion of the guide post 101 can be abutted with the top of a working area after sliding relative to the fixing portion, rollover of the bottom plate 100 is avoided, under the interaction of the positioning legs and the sliding portion, the fixing of the bottom plate 100 is firmer, the platform 102 moves more stably along the guide post 101, a plurality of motors 201 independently operate, each guide post 101 independently stretches and contracts, and the top with poor flatness in the working area can be handled.
In this embodiment, the bottom plate 100 is provided with a driving wheel 204, the driving wheel 204 contacts with the ground, and the driving wheel 204 is provided to facilitate the movement of the up-down double-positioning lifting platform to improve the convenience thereof.
In this embodiment, the platform 102 is provided with a plurality of guide wheels 217, each guide wheel 217 corresponds to one pull rope 203, and the pull ropes 203 are wound around the guide wheels 217, so that friction between the pull ropes 203 and the platform 102 is avoided by the guide wheels 217, the service life of the pull ropes 203 is prolonged, and the resistance of the motor 201 pulling the pull ropes 203 is reduced.
The working principle and working method of the upper and lower double-positioning lifting platform provided by the embodiment are as follows:
the upper and lower dual-positioning lifting platform is moved to a working area through the driving wheel 204, the positioning rod 215 is pulled out of the through hole 218, the support plate 214 is pulled out of the accommodating groove, the positioning rod 215 is inserted into the corresponding through hole 218 on the support plate 214, the top column 216 is rotated, and the top column 216 is continuously rotated after contacting with the ground until the driving wheel 204 is separated from the ground and the support plate 214 is horizontal.
Then, the hydraulic cylinder is started, the hydraulic cylinder pushes the guide post 101 to extend, the guide post 101 drives the motor 201 to rotate through the guide wheel 202 and the pull rope 203, the pull rope 203 is released from the motor 201 until the guide post 101 is abutted to the top of a working area, then, the motor 201 is started, an output shaft of the motor 201 drives the pull rope 203 to be wound on an output shaft of the motor, the pull rope 203 between the motor 201 and the platform 102 is shortened, the platform 102 rises, meanwhile, an included angle between the pull rod 207 and the platform 102 becomes large, the pull rod 207 drives the rotating shaft 210 to approach the pull rope 203 on the platform 102, the rotating shaft 210 drives the ejector rod 206 to push the pull rope 203 to bend, at the moment, the pressure borne by the first spring 208 is increased, but the compression amount of the first spring 208 is limited, the same acting force is exerted on the pull rope 203 at the same time, the bending degree of the pull rope 203 is consistent, the included angle between the pull rope 203 and the platform 102 becomes small, the sleeve 205 slides on the pull rope 203, and the connecting line between the ejector rod 206 and the end of the pull rope 203 on the platform 102 is always vertical.
When the pushing force of one push rod 206 to the pull rope 203 is inconsistent with the pushing force of the other push rods 206 to the pull rope 203, the platform 102 is in an inclined state, and then the upward pulling force of the pull rope 203 corresponding to the push rod 206 to the platform 102 is greater than or less than the upward pulling force of the other pull ropes 203 to the platform 102, the lifting speed of the platform 102 at the position of the push rod 206 is approximate to the lifting speed of the platform 102 at the other position, and then the lifting heights of the platform 102 are consistent, so that the platform 102 is in a horizontal state.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (6)
1. An upper and lower double-positioning lifting platform, which is characterized by comprising: the device comprises a bottom plate, guide posts, a platform and a traction mechanism; the bottom plate is arranged on the ground, four guide posts are fixedly arranged on the upper surface of the bottom plate along the vertical direction, the guide posts are uniformly distributed on the bottom plate, the platform is arranged right above the bottom plate, and the platform is in sliding connection with the guide posts along the vertical direction on the bottom plate; the four traction mechanisms are arranged, each traction mechanism corresponds to one guide post, each traction mechanism comprises a motor, a guide wheel, a pull rope, a switching assembly, a sleeve, a push rod and a pull rod, the motor is fixedly arranged on a bottom plate, the guide wheels are rotatably arranged on the corresponding guide posts, the guide wheels are positioned above the platforms, the rotating shafts of the guide wheels and the output shafts of the motor extend along a first direction, the first direction is the width direction of the platforms, one end of each pull rope is arranged on the platform, the other end of each pull rope is connected with the output shaft of the motor, the pull rope between the guide wheels and the platforms, the guide posts and the platforms form a triangle, the pull rope between the motor and the platforms is wound on the guide wheels, the switching assembly is slidably arranged on the platform along a second direction, the second direction is perpendicular to the first direction, the switching assembly is positioned at the position of the included angle between the guide wheels and the platforms, the sleeve is sleeved on the pull rope between the guide wheels and the platforms, the sleeve is slidably connected with the pull rod, one end of each push rod is vertically arranged on the sleeve, the other end of each push rod is rotatably arranged on the switching assembly, and the two ends of each pull rod are rotatably connected with the switching assembly and the bottom plate, and when the pull rod moves upwards along the guide posts, the switching assembly is close to the upper ends of the platforms;
The four guide posts and the four traction mechanisms are equally divided into a first group and a second group, each group comprises two guide posts and two traction mechanisms, the first group and the second group are rotationally symmetrical around a first axis, the first axis is perpendicular to the platform, the first axis is positioned at the center of the platform, the two traction mechanisms of the first group and the two traction mechanisms of the second group are in mirror symmetry about a first plane, the first axis is positioned in the first plane, and the first plane is perpendicular to the first direction; a transmission shaft is arranged between the two pull rods in the first group, the transmission shaft is rotatably arranged in the bottom plate, and two ends of the transmission shaft are respectively connected with the two pull rods in the first group; the end of one pull rod in the first group, which is close to the bottom plate, is meshed with the end of one pull rod in the second group, which is close to the bottom plate, through the teeth;
The switching subassembly includes pivot and second spring, has seted up logical groove on the platform, logical groove runs through the platform along vertical direction, and logical groove extends along the second direction, logical groove perpendicular to first direction surface has seted up flutedly, the length direction of recess extends along the second direction, the pivot slides and sets up in the recess, and the pivot axis extends along the first direction, the one end that the bottom plate was kept away from to the pull rod rotates with the pivot to be connected, the sheathed tube one end is kept away from to the ejector pin rotates with the pivot to be connected, the second spring sets up in the recess, the both ends of second spring are connected with pivot and platform respectively.
2. The lifting platform with double upper and lower positioning according to claim 1, wherein the ejector rod is provided with a positioning end and an extension end, the extension end is slidably arranged in the positioning end, a first spring is arranged in the positioning end, and two ends of the first spring are respectively connected with the positioning end and the extension end.
3. An up-down double positioning lifting platform according to claim 1, wherein the side of the base plate is provided with a plurality of positioning feet for supporting the base plate relative to the ground.
4. The lifting platform of claim 1, wherein the guide post is provided with a fixing portion and a sliding portion, the sliding portion is slidably disposed in the fixing portion in a vertical direction, the fixing portion is mounted on the base plate, and the guide wheel is rotatably mounted on the sliding portion.
5. An up-down double positioning lifting platform according to claim 1, wherein the base plate is provided with a driving wheel, and the driving wheel is in contact with the ground.
6. The lifting platform with double upper and lower positioning functions according to claim 1, wherein a plurality of guide wheels are arranged on the platform, each guide wheel corresponds to one pull rope, and the pull ropes are wound on the guide wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410355456.3A CN117945318B (en) | 2024-03-27 | 2024-03-27 | Up-down double-positioning lifting platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410355456.3A CN117945318B (en) | 2024-03-27 | 2024-03-27 | Up-down double-positioning lifting platform |
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| CN117945318A CN117945318A (en) | 2024-04-30 |
| CN117945318B true CN117945318B (en) | 2024-05-28 |
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| CN115402965A (en) * | 2022-08-17 | 2022-11-29 | 吉林安装集团股份有限公司 | Be applicable to large tracts of land rack whole lifting construction equipment |
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| CN117466202A (en) * | 2023-12-12 | 2024-01-30 | 济南市工程质量与安全中心 | Industrial and civil engineering material lifting equipment |
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| CN117945318A (en) | 2024-04-30 |
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