CN212609301U - Movable working platform and upright post thereof - Google Patents

Abstract

The utility model relates to a movable working platform and a vertical column thereof, wherein the vertical column comprises a base, a mandrel, a supporting plate, a mandrel bottom plate, a mandrel top cover and a base bottom plate; the base is supported on the base bottom plate, one end of the mandrel is arranged in the base in a penetrating mode, and the mandrel can lift in the base; the supporting plate is borne on the top cover of the mandrel; the dabber is hollow, and the bottom of dabber is provided with two at least second through-holes that are located the same height, has seted up the multiunit on the base and is located the first through-hole of co-altitude not, and the quantity of every group first through-hole is two at least, is provided with the bolt in the first through-hole, goes up and down along with the dabber in the base, second through-hole and each first through-hole intercommunication of group, and under the circumstances of second through-hole and first through-hole intercommunication, the bolt passes second through-hole and corresponding first through-hole. The stand is as the lift unit of work piece, and the weight of work piece is born the weight of by the bolt of stand, avoids using the great hydraulic cylinder subassembly of occupation space, so the usable space is great on the removal work platform, makes things convenient for the workman to carry out relevant operation.

Description

Movable working platform and upright post thereof

Technical Field

The utility model relates to a mobile workbench, especially relate to a mobile workbench and stand thereof.

Background

The AGV trolley is used as a mobile working platform and can be used for assembling and transporting large-scale workpieces, and for convenient assembly, the AGV is provided with a lifting unit for bearing the workpieces, and the space below the workpieces can be used for workers to perform related operations. While a hydraulic assembly is generally used as a lifting unit, the hydraulic assembly needs to be connected with a hydraulic station through an oil pipe, but the hydraulic station occupies a large volume, so that the available space on the mobile working platform is reduced, and the operation of workers is not facilitated.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a mobile work platform and a column thereof with a large available space, which includes the following steps:

the upright post comprises a base, a mandrel, a supporting plate, a mandrel bottom plate, a mandrel top cover and a base bottom plate; the base is borne on the base bottom plate, one end of the mandrel is arranged in the base in a penetrating mode, and the mandrel can lift in the base; the bottom end of the mandrel is connected with the mandrel bottom plate, the top end of the mandrel is connected with the mandrel top cover, and the support plate is borne on the mandrel top cover; the dabber is hollow, the bottom of dabber is provided with two at least second through-holes that are located the same height, set up the first through-hole that the multiunit is located the co-altitude not on the base, the quantity of every group first through-hole is two at least, be provided with the bolt in the first through-hole, along with the dabber goes up and down in the base, the second through-hole communicates with each group first through-hole, and under the circumstances of second through-hole and first through-hole intercommunication, the bolt passes the second through-hole with first through-hole intercommunication.

Further, the mandrel top cover comprises a pressing cover part extending outwards in the radial direction and a side wall part extending downwards in the axial direction and connected with the pressing cover part, the pressing cover part is arranged between the support plate and the mandrel, and the side wall part extends into the mandrel; the upright post also comprises a first buffer part, and the support plate is borne on the capping part of the mandrel top cover through the first buffer part; the first buffer part comprises a disc spring and a disc spring guide post, the disc spring guide post comprises an upper end part extending outwards in the radial direction and a cylinder part connected with the upper end part and extending downwards in the axial direction, and the upper end part is connected with the support plate; the dish spring cover is established on the upper portion of column portion, the lateral wall portion of dabber top cap is worn to establish in the lower part of column portion, column portion bottom is provided with the cushion, just the cushion extends to the bottom of lateral wall portion along radial epitaxy, column portion can be followed lateral wall portion and slided from top to bottom.

Furthermore, the relative both sides of shaft portion lower part all inwards caves in along radial and form first recess along axial extension, install two relative anti-rotating pins on the pressure cap portion of dabber top cap, the one end of anti-rotating pin stretches into in the first recess and by the inside wall spacing of first recess.

Furthermore, a plurality of sensors are arranged in the axial direction of the base, the sensors and the first through holes are arranged in a staggered mode, and the height of each sensor is located below the corresponding first through hole; a second groove is formed in the side wall of the mandrel in the radial inward direction, the second groove extends downwards to the mandrel bottom plate, the second groove in the mandrel is adjacent to a sensor on the base, and the sensor is used for detecting the position of the mandrel bottom plate.

Further, the upright post further comprises an electric push rod assembly and a guide pillar bottom plate, the electric push rod assembly is arranged in the core shaft, a third through hole is formed in the core shaft bottom plate, a fourth through hole is formed in the base bottom plate and communicated with the fourth through hole, the bottom end of the electric push rod assembly penetrates through the third through hole and the fourth through hole to be installed on a first support on the movable working platform, the bottom end of the column body is connected with one side of the guide pillar bottom plate, and the top end of the electric push rod assembly is connected with the other side of the guide pillar bottom plate.

Further, a fifth through hole is formed by the cylindrical part in a penetrating manner along the axial direction, and a third through hole is formed in the mandrel base plate; the upright post further comprises a nitrogen spring, and the nitrogen spring is positioned in the mandrel; the bottom end of the nitrogen spring penetrates through the third through hole and is fixed on the base bottom plate, the top end of the nitrogen spring is abutted against the bottom end of the guide pillar, or the top end of the nitrogen spring penetrates through the fifth through hole and is connected with the supporting plate.

Furthermore, the top end of the base is provided with a guide steel sleeve, the guide steel sleeve comprises an end cover portion and a cylindrical portion, the end cover portion extends outwards in the radial direction, the cylindrical portion extends downwards in the axial direction, a third groove is formed in the top end of the inner wall of the base downwards in the axial direction, the cylindrical portion is arranged in an annular space defined by the third groove and the mandrel, and the end cover portion is fixed to the top end of the base.

Furthermore, the upright post further comprises a guide post, the guide post is connected with the upper surface of the supporting plate, and a reflector is arranged on the top surface of the guide post.

Still provide a removal work platform, including the automobile body, and still include the stand of above-mentioned structure, a plurality of stands interval distribution is on the automobile body.

Further, still include X axle removal subassembly and Y axle removal subassembly, stand slidable mounting is on Y axle removal subassembly, stand and Y axle removal subassembly slidable mounting are on X axle removal subassembly, X axle removal subassembly is fixed on the automobile body.

The mobile working platform at least has the following advantages: the dabber of stand can go up and down in the base to and under the circumstances of the second through-hole on the dabber and the first through-hole intercommunication on the base, the bolt passes the first through-hole and the second through-hole of intercommunication, and the work piece weight of moving work platform top is born by the bolt, has avoided using the great hydraulic cylinder subassembly of occupation space, so the available space is great relatively on the moving work platform, makes things convenient for the workman to carry out relevant operation.

Drawings

FIG. 1 is a schematic diagram of a mobile work platform according to an embodiment;

FIG. 2 is an enlarged view taken at point I in FIG. 1;

FIG. 3 is a schematic structural view of a column according to an embodiment;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is an enlarged view taken at point II of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 8 is an enlarged view taken at III of FIG. 7;

FIG. 9 is a schematic diagram of a mandrel cap in accordance with one embodiment;

in the figure, 100-mobile workbench, 1-vehicle body, 2-upright post, 31-first support, 32-Y-axis slide rail, 33-Y-axis screw rod module, 34-second support, 35-X-axis slide rail, 36-X-axis screw rod module, 37-motor cover, 201-support plate, 202-first buffer part, 2021-disc spring, 2022-disc spring guide post, 20221-column body, 20222-upper end part, 203-mandrel, 204-base, 205-guide steel sleeve, 2051-end cover part, 2051-column part, 206-mandrel top cover, 2061-side wall part, 2062-pressure cover part, 207-guide post, 208-base bottom plate, 209-reflector plate, 210-sensor, 211-anti-rotation pin, 212-first through hole, 213-second groove, 214-second through hole, 215-electric push rod component, 2151-second buffer part, 2152-electric push rod, 216-third through hole, 217-first groove, 218-guide pillar bottom plate, 219-cushion block, 220-fourth through hole, 221-mandrel bottom plate, 222-fifth through hole, 223-fourth groove and 224-avoiding hole.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "front," "rear," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, a mobile work platform 100 in an embodiment includes a vehicle body 1, a driving wheel and a plurality of columns 2, wherein the driving wheel is installed at the bottom of the vehicle body 1, and the columns 2 are spaced apart from each other on the vehicle body 1. Specifically, the stand totally 4, 1 left side interval of automobile body of moving work platform 100 sets up two stands 2, and its right side interval sets up two stands 2, and wholly is evenly distributed. The upright post 2 can be lifted, the upright post 2 is used for bearing a workpiece, and when the workpiece is lifted by the upright post 2, the space below the workpiece can be used for assembly workers to perform related operations; the movable working platform further comprises a Y-axis moving assembly and an X-axis moving assembly, the stand column 2 is slidably mounted on the Y-axis moving assembly, the stand column 2 and the Y-axis moving assembly are slidably mounted on the X-axis moving assembly, the X-axis moving assembly is mounted on the vehicle body 1, the stand column 2 can not only ascend and descend, but also move in the horizontal plane, namely the stand column 2 can move in three directions of XYZ axes, the workpieces on the stand column can be lifted to different heights, and the movable working platform can be adapted to various workpieces with different sizes.

With specific reference to fig. 2, the mobile work platform further includes a first support 31, and the column 2 is slidably mounted on the Y-axis moving assembly through the first support 31; the Y-axis moving assembly comprises a second support 34, a Y-axis motor, a Y-axis lead screw module 33 and a Y-axis slide rail 32, the Y-axis slide rail 32 is fixed on the second support 34 along the Y-axis direction, the Y-axis motor is also installed on the second support 34, of course, the Y-axis motor can also be directly installed on the vehicle body 1 or suspended, and the second support 34 is installed on the X-axis moving assembly in a sliding manner; y axle lead screw module 33 sets up with Y axle slide rail 32 is adjacent, just Y axle lead screw module 33 includes Y axle lead screw and Y axle nut, Y axle nut is threaded on Y axle lead screw, and Y axle lead screw is connected with the output of Y axle motor, and Y axle nut links to each other with one side of first support 31, installation stand 2 on the opposite side of first support 31. Since the first support 31 can slide on the Y-axis slide rail 32 in the Y-axis direction, and the column 2 is fixed to the first support 31, the column 2 can move in the Y-axis direction with the first support 31. The Y-axis slide rail can be one or two.

Further, the X-axis moving assembly comprises an X-axis motor, an X-axis lead screw module 36 and an X-axis slide rail 35, and the X-axis slide rail 35 is fixed on the vehicle body 1 along the X-axis direction; the X-axis motor is also installed on the vehicle body 1, the X-axis lead screw module 36 is arranged adjacent to the X-axis slide rail 35, the X-axis lead screw module 36 comprises an X-axis lead screw and an X-axis nut, the X-axis nut is arranged on the X-axis lead screw in a threaded mode, the X-axis lead screw is connected with the output end of the X-axis motor, the X-axis nut is connected with one side of the second support 34, and the Y-axis moving assembly is installed on the other side of the second support 34. Since the second support 34 is slidably connected to the X-axis slide rail 35 and can slide along the X-axis direction, and the upright 2 is fixed on the second support 34, the upright 2 can move along with the second support 34 in the X-axis direction.

Further, a motor cover 37 is disposed on the vehicle body 1, and the motor cover 37 covers the Y-axis motor and the X-axis motor. The motor cover 37 can prevent the motor from being damaged by external environment, and ensure that the upright post 2 can normally move on the horizontal plane.

Referring to fig. 3 to 8, the upright 2 includes a base 204, a spindle 203, a support plate 201, a base bottom plate 208, a spindle bottom plate 221, and a spindle top cover 206, the base bottom plate 208 is connected to the base 204, and the base bottom plate 208 is slidably connected to a Y-axis slide rail of the Y-axis moving assembly through a first support 31; one end of the mandrel 203 is arranged in the base 204 in a penetrating way, and the mandrel 203 can be lifted in the base 204; the bottom end of the mandrel 203 is connected with a mandrel bottom plate 221, the top end of the mandrel 203 is connected with a mandrel top cover 206, and the support plate 201 is carried on the mandrel top cover 206; the mandrel 203 is hollow, at least two second through holes 214 located at the same height are formed in the bottom of the mandrel 203, a plurality of groups of first through holes located at different heights are formed in the base 204, the number of each group of first through holes is at least two, and a plug pin (not shown in the figure) is arranged in each first through hole 212; as the mandrel 203 is raised and lowered in the base 204, the second through holes 214 may communicate with the respective first through holes 212. After the mandrel 203 is correspondingly lifted in the base 204 (the second through hole 214 is communicated with the first through hole 212 at a certain height), the bolt is inserted into the second through hole 214 in the corresponding first through hole 212, so that the mandrel 203 is locked at a corresponding height, the weight of the workpiece is finally borne by the bolt, the hydraulic cylinder assembly occupying a large space is avoided, and the position of the whole upright post 2 on the horizontal plane is conveniently adjusted to adapt to workpieces with different sizes. In this embodiment, the bottom of the mandrel 203 is provided with two second through holes 214 located at the same height, the base 204 is provided with three groups of first through holes 212 located at different heights, and the number of each group of first through holes 212 is two.

Further, referring to fig. 5, three sets of first through holes 212 are disposed on the base 204, and the three sets of first through holes 212 are uniformly distributed on the base 204 along the axial direction. And referring to fig. 3 and 8, a sensor 210 is further disposed on the base 204, and the sensor 210 is used for detecting the height of the mandrel 203; the structure is that a plurality of sensors 210 are arranged in the axial direction of the base 204, the sensors 210 are arranged in a staggered manner with respect to the first through holes 212, and each sensor 210 is located below a corresponding first through hole 212; a second groove 213 is formed radially inward along the sidewall of the mandrel 203, the second groove 213 extends downward to the mandrel base plate 221, the second groove 213 is not communicated with the second through hole 214, and the second groove 213 is adjacent to the sensor 210 on the base 204, when the second through hole 214 is communicated with one of the groups of first through holes 212, because the second through hole 214 is adjacent to the mandrel base plate 221, the sensor 210 located at the height below the first through hole 212 can detect the approach of the mandrel base plate 221, and further determine the height of the mandrel.

The mobile working platform further comprises a PLC (programmable logic controller), when the second through hole 214 in the mandrel 203 is communicated with the first through hole 212 in the lowest layer, the marking mandrel 203 is located at the first gear, the sensor 210 sends a digital signal (0, 0, 1) to the PLC, when the second through hole 214 in the mandrel 203 is communicated with the first through hole 212 in the uppermost layer, the marking mandrel 203 is located at the third gear, the sensor 210 sends a digital signal (1, 0, 0) to the PLC, when the second through hole 214 in the mandrel 203 is communicated with the first through hole 212 in the middle layer, the marking mandrel 203 is located at the second gear, and the sensor 210 sends a digital signal (0, 1, 0) to the PLC. Be provided with a plurality of gears on the stand, applicable not co-altitude needs. Of course, a plurality of gears can be designed according to actual height requirements.

The mobile working platform further comprises a PLC (programmable logic controller), when the second through hole 214 in the mandrel 203 is communicated with the first through hole 212 in the lowest layer, the marking mandrel 203 is located in the first gear, when the second through hole 214 in the mandrel 203 is communicated with the first through hole 212 in the uppermost layer, the marking mandrel 203 is located in the third gear, when the second through hole 214 in the mandrel 203 is communicated with the first through hole 212 in the middle, the marking mandrel 203 is located in the second gear, and the sensor 210 sends the signal to the PLC after detecting the gear information of the mandrel 203. Be provided with a plurality of gears on the stand, applicable not co-altitude needs. Of course, a plurality of gears can be designed according to actual height requirements.

After the sensor 210 detects the gear information of the mandrel 203, the relevant gear information is sent to the PLC, when the signals received by the PLC are the same, and are signals with the required height (namely, the mandrels in the stand columns move to the corresponding gears, and the mandrels in all the stand columns are located at the same gears), the PLC controls the mobile working platform 100 to perform the next operation, if the signals received by the PLC are different, and/or the signals with the required gears are different, the PLC triggers an alarm device to remind the user to adjust the height of the stand column 2 again until all the height reaches the required height.

Further, referring to fig. 3, a guide post 207 is disposed above the supporting plate 201, and the guide post 207 has a guide surface, and the guide surface forms an included angle with the vertical direction. When the workpiece is to be placed on the movable working platform, the fixing position of the workpiece is firstly contacted with the guide post 207 at the top end of the upright post 2, if the positioning accuracy is not enough, the fixing position of the workpiece has a certain position difference with the guide post 207, and the workpiece can slide down to a corresponding position along the guide surface of the guide post 207. A reflector 209 is fixed on the top surface of the guide post 207, and the reflector 209 is used for positioning and calibrating the column 2 in cooperation with an intelligent crane or other automation equipment.

Further, referring to fig. 5, a guide steel sleeve 205 is arranged at the top end of the base 204, the guide steel sleeve 205 includes an end cover portion 2051 extending radially outward and a cylindrical portion 2052 extending axially downward, the end cover portion 2051 is connected with the cylindrical portion 2052, a third groove is formed in the top end of the inner side wall of the base 204 in the axial downward direction, the cylindrical portion 2052 is arranged in an annular space defined by the third groove and the mandrel 203, and the end cover portion 2051 is connected with the top end of the base 204. The guide steel sleeve 205 is provided so that only the inner wall of the cylindrical portion 2052 needs to be finished to restrict the sliding of the mandrel 203, and the inner wall of the base 204 does not need to be finished to simplify the machining process.

Referring further to fig. 7-8, the mandrel cap 206 includes a radially outwardly extending gland portion 2062 and an axially downwardly extending sidewall portion 2061, the gland portion 2062 being disposed between the support plate 201 and the mandrel 203, the sidewall portion 2061 extending into the mandrel 203.

Further referring to fig. 5-8, a first buffer portion 202 is disposed between the supporting plate 201 and the mandrel 203, that is, the supporting plate 201 is connected to the mandrel 203 through the first buffer portion 202, and further, the supporting plate 201 is connected to the pressing cover portion 2062 through the first buffer portion 202; specifically, referring to fig. 6, the first buffer portion 202 includes a disc spring 2021 and a disc spring guide post 2022, the disc spring guide post 2022 includes an upper end portion 20222 extending radially outward, the disc spring guide post 2022 further includes an axially downward extending column portion 20221 connected to the upper end portion 20222, and the upper end portion 20222 is connected to the support plate 201; the disc spring 2021 is sleeved on the upper portion of the cylindrical portion 2022, the lower portion of the cylindrical portion 20221 not covered by the disc spring 2021 is inserted into the sidewall portion 2061 of the spindle top cap 206, the cylindrical portion 20221 is disposed adjacent to the sidewall portion 2061, two opposite sides of the bottom end of the cylindrical portion 20221 are respectively connected to a pad 219, the pads 219 radially extend outward to the bottom end of the sidewall portion 2061, and the cylindrical portion 20221 can slide up and down along the sidewall portion 2061. When a workpiece is loaded on the upright 2, the support plate 201 is pressed downward, the disc spring guide post 2022 moves downward, and the cushion block 219 moves away from the bottom end of the side wall portion 2061, and as the disc spring guide post 2022 further descends until the spindle top cover 206 contacts with the disc spring 2021, the disc spring 2021 is gradually compressed, and finally the weight of the workpiece is loaded on the bolt, so that the first buffer portion 202 absorbs the impact load finally acting on the bolt, and the service life of the bolt is prolonged. The disc spring guide post 2022 is made of an elastic material, and can further absorb impact load acting on the bolt.

Further, the lifting of the mandrel 203 in the column 2 is performed automatically, specifically, as shown in fig. 5, the column 2 further includes an electric push rod assembly 215, the electric push rod assembly 215 is disposed in the mandrel 203, a third through hole 220 is disposed on the mandrel bottom plate 221, a fourth through hole 216 is disposed on the base bottom plate 208, and the third through hole 220 is communicated with the fourth through hole 216. The bottom end of the electric push rod assembly 215 passes through the third through hole 220 and the fourth through hole 216 and is mounted on the first support 31, and the top end of the electric push rod assembly 215 is connected with the bottom end of the disc spring guide post 2022. The bottom end of the disc spring guide post 2022 is further connected to a pad 219, the pad 219 extends radially outward to the lower side of the sidewall portion, and the post portion 20221 can slide up and down along the sidewall portion 2061. When the electric push rod assembly 215 pushes the bottom end of the disc spring guide post 2022 to rise, since the cushion block 219 is installed at the bottom end of the disc spring guide post 2022 and extends to the lower side of the side wall portion 2061, the rising of the disc spring guide post 2022 indirectly drives the spindle top cover 206 to rise, and the spindle top cover 206 is fixed on the top of the spindle 203, so that the spindle top cover 206 pulls the spindle 203 to slide upwards along the base 204, thereby realizing the automatic lifting of the spindle 203. When the lifting of the mandrel 203 in the upright 2 is automatic, the bolt is an electronic bolt which can automatically lock or unlock the mandrel according to the related signals sent by the controller. The number of the cushion blocks 219 is two, and the two cushion blocks are symmetrically arranged. Of course, in other embodiments, the base bottom plate is not provided with the fourth through hole, and the bottom end of the power push rod assembly can be fixed on the base bottom plate only through the third through hole.

Furthermore, in order to reduce the overall weight of the column 2, a fifth through hole 222 is formed through the column portion 20221 in the axial direction, the bottom surface of the column portion 20221 is connected to one side of the column base plate 218, and the other side of the column base plate 218 is in contact with the top end of the electric push rod assembly 215.

With further reference to fig. 8, the electric push rod assembly 215 includes an electric push rod 2152 and a second cushioning portion 2151, the second cushioning portion 2151 being connected to a top end of the electric push rod 2152. The second buffer 2151 prevents the disc spring guide post 2022 from directly applying pressure to the electric push rod 2152 when moving downward, the spring inside the buffer part is compressed when the disc spring guide post is pressed downward, the force applied to the electric push rod 2152 is the compression elasticity of the spring in the second buffer 2151, and finally the load is still applied to the plug pin, so that the force applied to the electric push rod 2152 is ensured to protect the electric push rod 2152 within the bearing range.

Further, as shown in fig. 9, two symmetrical fourth grooves 223 are radially formed on the upper surface of the pressure cover 2062, and the anti-rotation pin 211 is disposed in the fourth grooves 223; and after the cushion block 219 is installed at the bottom end of the cylindrical portion 20221, the cushion block 219 enters the mandrel top cover 206 along the avoiding hole 224 until the cylindrical portion 20221 can rotate in the side wall portion 2061, and then the cylindrical portion 2022 is rotated by 90 °, so that the assembly of the cushion block 219, the disc spring guide post 20221 and the mandrel top cover 206 is completed.

Further, as shown in fig. 6, an anti-rotation pin 211 is installed on the mandrel top cover 206, two opposite sides of the lower portion of the cylinder portion 20221 are both recessed inward in the radial direction and extend in the axial direction to form a first groove 217, and one end of the anti-rotation pin 211 extends into the first groove 217 and is limited by the inner side wall of the first groove 217. When the disc spring guide post 2022 moves downward, the anti-rotation pin 219 slides upward along the first groove 217 relative to the cylinder portion 20221, and the anti-rotation pin 211 is limited by the inner sidewall of the first groove 217, which effectively prevents the disc spring guide post 2022 from rotating relative to the core shaft 203.

In other embodiments, the lifting of the mandrel in the upright column can also be manual, and a worker can adjust the gear of the mandrel according to the actual height requirement. In order to reduce the workload of workers, a nitrogen spring is arranged in the mandrel, in the embodiment, the bolt is a common bolt, when the mandrel is lifted to a corresponding gear, the worker opens the bolt at the gear, and the bolt penetrates through a second through hole communicated with the first through hole, so that the height of the upright post is locked. The nitrogen spring is positioned in the mandrel, the bottom end of the nitrogen spring penetrates through the third through hole and is fixed on the base bottom plate, and the top end of the nitrogen spring is connected with the guide pillar bottom plate. If the height of the upright column limits that the top end of the nitrogen spring cannot be directly connected with the guide column bottom plate, the top end of the nitrogen spring can penetrate through the fifth through hole in the column body part to be directly contacted with the supporting plate, and then the nitrogen spring directly pushes the supporting plate to ascend, and certainly in the embodiment, the bottom surface of the column body part is not connected with the guide column bottom plate.

The lift of stand has avoided using hydraulic assembly through the automation with the help of electric putter or with the help of the manual realization of nitrogen gas spring, and hydraulic assembly need be connected to hydraulic pressure station through oil pipe usually, hydraulic pressure station is bulky, and oil pipe is difficult for removing moreover, if use hydraulic assembly to provide lift power for the stand, the stand can not remove in the horizontal plane, so can not be according to the horizontal displacement of waiting the work piece size regulation stand that bears, and then can only be used for the transport of fixed dimension's work piece, or can not guarantee transport or assembly process's stability.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The upright post of the movable working platform is characterized by comprising a base, a mandrel, a supporting plate, a mandrel bottom plate, a mandrel top cover and a base bottom plate; the base is borne on the base bottom plate, one end of the mandrel is arranged in the base in a penetrating mode, and the mandrel can lift in the base; the bottom end of the mandrel is connected with the mandrel bottom plate, the top end of the mandrel is connected with the mandrel top cover, and the support plate is borne on the mandrel top cover; the dabber is hollow, the bottom of dabber is provided with two at least second through-holes that are located the same height, set up the first through-hole that the multiunit is located the co-altitude not on the base, the quantity of every group first through-hole is two at least, be provided with the bolt in the first through-hole, along with the dabber goes up and down in the base, the second through-hole communicates with each group first through-hole, and under the circumstances of second through-hole and first through-hole intercommunication, the bolt passes the first through-hole and the second through-hole of intercommunication.

2. The column for a mobile work platform of claim 1, wherein the mandrel top cover comprises a radially outwardly extending gland portion disposed between the support plate and the mandrel and an axially downwardly extending sidewall portion connected thereto, the sidewall portion extending into the mandrel; the upright post also comprises a first buffer part, and the support plate is borne on the capping part of the mandrel top cover through the first buffer part; the first buffer part comprises a disc spring and a disc spring guide post, the disc spring guide post comprises an upper end part extending outwards in the radial direction and a cylinder part connected with the upper end part and extending downwards in the axial direction, and the upper end part is connected with the support plate; the dish spring cover is established on the upper portion of column portion, the lateral wall portion of dabber top cap is worn to establish in the lower part of column portion, column portion bottom is provided with the cushion, just the cushion extends to the bottom of lateral wall portion along radial epitaxy, column portion can be followed lateral wall portion and slided from top to bottom.

3. The column for a mobile work platform of claim 2, wherein the lower portion of the column is recessed radially inward and extends axially to form a first groove, and the capping portion of the top cover of the mandrel is mounted with two opposing rotation-preventing pins, one end of each of the rotation-preventing pins extending into the first groove and being retained by the inner sidewall of the first groove.

4. The column for a mobile work platform according to claim 1, wherein a plurality of sensors are provided in the axial direction of the base, the sensors being disposed offset from the first through holes, and each sensor being located below a corresponding first through hole; a second groove is formed in the side wall of the mandrel in the radial inward direction, the second groove extends downwards to the mandrel bottom plate along the axial direction, the second groove in the mandrel is adjacent to a sensor on the base, and the sensor is used for detecting the position of the mandrel bottom plate.

5. The mast for a mobile work platform of claim 2, further comprising a power operated push rod assembly and a guide post base plate, wherein the power operated push rod assembly is disposed in the spindle, the spindle base plate is disposed with a third through hole, the base plate is disposed with a fourth through hole, the third through hole is communicated with the fourth through hole, a bottom end of the power operated push rod assembly is mounted on the first support of the mobile work platform through the third through hole and the fourth through hole, a bottom end of the post body is connected to one side of the guide post base plate, and a top end of the power operated push rod assembly is connected to the other side of the guide post base plate.

6. The upright post of claim 2, wherein a fifth through hole is formed axially through the post body, and a third through hole is formed in the mandrel base plate; the upright post further comprises a nitrogen spring, and the nitrogen spring is positioned in the mandrel; the bottom end of the nitrogen spring penetrates through the third through hole and is fixed on the base bottom plate, and the top end of the nitrogen spring penetrates through the fifth through hole and is connected with the supporting plate.

7. The column of claim 1, wherein the top end of the base is provided with a guide steel sleeve, the guide steel sleeve comprises an end cover part extending radially outwards and a cylindrical part extending axially downwards, the end cover part is connected with the cylindrical part, the top end of the inner wall of the base is provided with a third groove along the axial direction downwards, the cylindrical part is arranged in an annular space enclosed by the third groove and the mandrel, and the end cover part is fixed at the top end of the base.

8. The mast for a mobile work platform of claim 1, further comprising a guide post, wherein the guide post is connected to the upper surface of the support plate, and a reflective plate is disposed on the top surface of the guide post.

9. A mobile work platform comprising a vehicle body, and further comprising a plurality of uprights according to any one of claims 1 to 8, the uprights being spaced apart on the vehicle body.

10. The mobile work platform of claim 9, further comprising an X-axis motion assembly and a Y-axis motion assembly, the column slidably mounted on the Y-axis motion assembly, the column and the Y-axis motion assembly slidably mounted on the X-axis motion assembly, the X-axis motion assembly secured to the cart body.

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