CN113719097A

CN113719097A - Liftable operating platform

Info

Publication number: CN113719097A
Application number: CN202111071833.3A
Authority: CN
Inventors: 项乐宏; 李方圆; 泮云萍; 史乾
Original assignee: Loctek Ergonomic Technology Co Ltd
Current assignee: Loctek Ergonomic Technology Co Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2021-11-30
Anticipated expiration: 2041-09-14
Also published as: CN113719097B

Abstract

The invention discloses a liftable operating platform, which comprises an operating platform body at the top, and also comprises a six-axis sensor, a main controller and at least two lifting stand columns, wherein the top ends of the six-axis sensor, the main controller and the lifting stand columns are fixedly connected with the operating platform body and driven by respective motors; the lifting stand columns are two, the top end of each lifting stand column is fixedly connected with the middle of the width of the two ends of the operating platform body, the bottom end of each lifting stand column is fixedly connected with one supporting cross rod, and the supporting cross rods are parallel to the connecting cross rods of the operating platform body, which extend along the width. The liftable operation platform can automatically adjust the height of the stand column to keep the operation platform body to be always in a horizontal state, the stability is good, the safety is guaranteed, and the structure is simple.

Description

Liftable operating platform

Technical Field

The invention relates to the technical field of lifting equipment, in particular to a liftable operating platform.

Background

Along with diversified demands of people in the aspects of life, work, entertainment and the like, if the people need to draw pictures on family courtyards, indoor decorative walls, walls and the like, the demands on a liftable operation platform or lifting working platform or lifting frame suitable for personal use are more and more vigorous.

However, the prior art is suitable for a small number of kinds of personal liftable operating platforms, and if the lifting device adopts an electric hoist or the like, the liftable operating platform in the prior art generally has the following disadvantages: 1. when the operation platform runs into an inclined ground or a step, the liftable operation platform can not ensure that the operation platform body is always in a horizontal state, the stability is poor, and the safety can not be ensured. 2. Some structures are too complex, and some structures are not stable enough, safe enough and firm enough. 3. In order to reduce the frequency of horizontal movement, the operation platform body needs to be ensured with a certain length, but the whole volume is large, the occupied space is large, and the transportation cost is increased; when stored, the storage space is too large to obstruct the normal living and working order.

Disclosure of Invention

The invention aims to solve the technical problem of providing a lifting operation platform which can automatically adjust the height of an upright post so as to keep an operation platform body in a horizontal state all the time, and is stable, safe and liftable.

The invention provides a liftable operating platform, which comprises an operating platform body at the top, and also comprises a six-axis sensor, a main controller and at least two lifting stand columns, wherein the top ends of the six-axis sensor and the main controller are fixedly connected with the operating platform body and driven by respective motors, the six-axis sensor and the motors are electrically connected with the main controller, the six-axis sensor is used for detecting the horizontal state of the operating platform body and transmitting electric signals to the main controller, and the main controller is used for automatically controlling the height difference of each lifting stand column so as to keep the operating platform body in the horizontal state all the time.

After adopting the structure, the liftable operating platform has the following advantages: when the lifting operation platform works, the six-axis sensor arranged on the operation platform body in the control box arranged on the bottom surface of the platform board of the operation platform body acquires the levelness of the operation platform body constantly, if the operation platform body is in an inclined state due to the inclined ground or steps, an electric signal in the inclined state immediately passes through the main controller arranged in the control box, and the lifting upright column at the end with the low horizontal position of the platform frame is controlled to ascend until the operation platform is in the horizontal state.

Furthermore, the bottom at each end of each transverse supporting rod is provided with a roller, the top at each end of each transverse supporting rod is hinged with one end of a movable supporting rod, the other end of the movable supporting rod is screwed with an adjusting screw rod, and the bottom of the adjusting screw rod is provided with a positioning disc which is used for being tightly abutted to the ground. Namely four rollers, four adjusting screws and four positioning discs in total. After the structure is adopted, the operation platform can roll on the ground, is convenient to move, is integrally firmer in working state and better in stability, and further ensures the safety.

Furthermore, two sides of the joint of each transverse supporting rod and each lifting upright post are fixedly connected with stiffening angle steel. After the structure is adopted, the overall structure of the operating platform is firmer, the stability is better, and the safety is further ensured.

Further, operation platform includes the platform frame that comprises many horizontal connecting rods and many vertical connecting rods, links firmly the landing slab at the platform frame top, is equipped with the rail of door, links firmly the step ladder of business turn over operation platform body on the platform frame and be convenient for. After the structure more than adopting, the structure of operation platform body is simpler, more firm, more steady and safer.

Furthermore, the platform frame fixedly connected with the platform plate is four along the length direction, the adjacent sides of the two middle blocks are hinged with each other, each outer side of the two middle blocks is hinged with one of the two ends, the two middle blocks are downward in a vertical state when being folded, the four blocks are positioned on the same horizontal plane when being extended, and a lock catch fixing structure is arranged between the two middle blocks; the rails on the front side and the rear side corresponding to the two platform frames fixedly connected with the platform plate in the middle are doors, two doors on each side are hinged with the rails on the two ends, each door is provided with an upper door bolt and a lower door bolt, the upper door bolt and the lower door bolt of each door are respectively buckled when the two doors are closed to form a straight line, and the upper door bolt and the lower door bolt of each door are respectively separated when the two doors are opened and folded. After the structure is adopted, the upper door bolt and the lower door bolt of each door provide double insurance and are safer. And under the prerequisite of guaranteeing firm, steady and the safety of during operation platform body, during transportation or deposit, can descend operation platform body earlier, make operation platform body draw close to the centre after breaking away hasp fixed knot structure and the keeper that breaks away the lock, the whole volume reduces a lot relatively when making the transportation, and occupation space reduces relatively, has practiced thrift the cost of transportation. The storage space is relatively reduced due to the relatively reduced volume, so that the negative influence on the normal living order and the working order is reduced. And the contracting or extending structure is simple and reliable, and the operation is convenient.

Further, the bottom surface symmetry of two vertical connecting rods of two adjacent departments in the middle of front and back side is equipped with the hasp fixed knot structure that the structure is the same: two rectangular steel pipes of each lock catch fixing structure, which are collinear, are fixedly connected to the bottom surfaces of the respective longitudinal connecting rods, a circular steel pipe is arranged in one rectangular steel pipe in a sliding fit mode, the circular steel pipe is inserted into the other rectangular steel pipe when the platform frame extends, the respective butterfly-type locking screws are screwed on the respective rectangular steel pipes, and a pair of radial through holes for locking the respective butterfly-type locking screws are formed in the circular steel pipes. After adopting above structure, when the platform frame extends, the hasp is fixed firm, reliable, steady and safety, and hasp fixed knot constructs separately when reducing, is convenient for draw together, easy operation, convenience and reliable.

Furthermore, every lift stand top links firmly with each one at both ends in the middle of the width of the platform frame that has linked firmly the landing slab, links firmly respective oblique stiffener between every lift stand top and each one of both ends link firmly the two vertical connecting rods in the platform frame outside of landing slab. After adopting above structure, both guaranteed during operation platform body sound construction, steady and safety, do not hinder again and draw together the operation.

Furthermore, one or more longitudinal reinforcing rods are fixedly connected to the two lifting upright columns. By adopting the structure, the lifting operation platform has a firmer integral structure and better stability, and further ensures the safety.

Furthermore, each longitudinal reinforcing rod is provided with four sections, the left section is one, the right section is one, the two sections in the middle are four, the two front sides of the middle section are symmetrically arranged with the two rear sides, the two adjacent ends of the front side are hinged, and the two adjacent ends of the rear side are hinged; the outer ends of the two front sides are hinged with the left section and the right section, and the outer ends of the two rear sides are hinged with the left section and the right section; the two front sides of the middle section are parallel and protrude towards the front side and are vertical relative to the longitudinal reinforcing rods of the left and right sections during folding, and the two rear sides of the middle section are parallel and protrude towards the rear side and are vertical relative to the longitudinal reinforcing rods of the left and right sections during folding; when the folding umbrella is stretched, the two front sides of the middle section are on the same straight line, the two rear sides of the middle section are also on the same straight line, and the two front sides are detachably connected with the two rear sides. After the structure is adopted, under the premise of ensuring the firm, stable and safe integral structure of the operating platform during working, when the operating platform is transported or stored, if the longitudinal reinforcing rod with the hinge structure is arranged, the operating platform body can be firstly descended, and the reinforcing rod is also drawn towards the middle while the operating platform body is drawn towards the middle, so that the integral volume of the operating platform during transportation is greatly reduced, the occupied space is relatively reduced, and the transportation cost is saved. The storage space is relatively reduced due to the relatively reduced volume, so that the negative influence on the normal living order and the working order is reduced. And the contracting or extending structure is simple and reliable, and the operation is convenient.

Drawings

Fig. 1 is a schematic perspective view of a liftable operating platform according to a first embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is a schematic perspective view of the second liftable operating platform of the present invention in a working state.

Fig. 5 is an enlarged schematic view of C in fig. 4.

Fig. 6 is a schematic perspective view of the liftable operating platform of the present invention in a retracted state.

Fig. 7 is an enlarged schematic view of D in fig. 6.

Fig. 8 is an enlarged schematic view of E in fig. 6.

Shown in the figure: 1. the operation platform comprises an operation platform body, 2, lifting columns, 3, first bolts, 4, longitudinal reinforcing rods, 5, a lock catch fixing structure, 6, a door, 7, a fence, 8, a platform plate, 9, transverse connecting rods, 10, longitudinal connecting rods, 11, transverse supporting rods, 12, roller frames, 13, rollers, 14, a mounting plate, 15, a first hinge sleeve, 16, a first short shaft, 17, stiffening angle steel, 18, a movable supporting rod, 19, a screwing handle, 20, an internal thread sleeve, 21, an adjusting screw rod, 22, a positioning disc, 23, a first rectangular steel pipe, 24, a first hinge lug, 25, a first pin shaft, 26, a lock catch type door bolt, 27, a second hinge lug, 28, a butterfly type locking screw, 29, a long through hole, 30, a left end block, 31, a connecting plate, 32 oblique reinforcing rods, 33, a left section, 34, a middle section, 35, a right section, 36, front side two, 37, a first Contraband-shaped steel block, 38, a vertical reinforcing rod, a vertical rod, a horizontal rod, a vertical rod, a horizontal rod, a vertical rod, a horizontal rod, a vertical rod, a horizontal rod, a vertical rod, the middle block, 39, the middle block, 40, a hinge, 41, the right end block, 42, a platform frame, 43, a rectangular steel plate, 44, a step ladder, 45, a control box, 46, a tension spring type hook, 47, a second Contraband-shaped steel block, 48, a second pin shaft, 49, a second rectangular steel pipe, 50, a round steel pipe, 51, a radial through hole, 52, a third bolt, 53, a second bolt, 54, a third Contraband-shaped steel block, 55, two rear-side steel blocks, 56, a fourth Contraband-shaped steel block, 57 and a second hinge sleeve.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It is to be noted that the description of the embodiments is provided to aid understanding of the present invention, and is not intended to limit the present invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, 2, 3, 4 and 5.

The liftable operating platform can be called as a lifting working platform or a lifting frame.

The invention relates to a liftable operating platform, which comprises an operating platform body 1 at the top.

The liftable operating platform also comprises a six-axis sensor, a main controller and at least two lifting upright posts 2, wherein the top ends of the six-axis sensor and the main controller are fixedly connected with the operating platform and driven by respective motors. The six-shaft sensor and the motor are electrically connected with the main controller. The six sensors are used for detecting the horizontal state of the operation platform body 1 and transmitting an electric signal to the main controller, and the main controller is used for automatically controlling the height difference of each lifting upright column so as to keep the operation platform body 1 always in the horizontal state. If the six sensors detect the low and left-hand horizontal level of the horizontal level of operation platform body 1 right-hand member, pass this signal to main control unit after, then main control unit can control the motor that starts the lift stand 2 of right-hand member, and the vice work of or the ball screw of drive ball screw increases operation platform body 1 right-hand member and is in the horizontality all the time in order to keep operation platform body 1. Six axis sensors are commercially available. The main controller is also commercially available, such as a commercially available control chip and a commercially available CPU. Six sensors and main control unit and other relevant control components can all be established in control box 45, and control box 45 can be in the bottom surface of the platform frame 42 of operation platform body 1 like the platform frame 42 of right-hand member through the screw spiro union.

The lifting upright columns 2 are preferably two, the top end of each lifting upright column 2 is fixedly connected with the middles of the widths of the two ends of the operating platform body 1, if the top end of each lifting upright column 2 is welded with a connecting plate 31, a plurality of through holes are formed in the connecting plate 31, a plurality of threaded holes are formed in the bottom plates of two longitudinal connecting rods 10 in the middle of the width, such as the bottom plate of a rectangular steel pipe, and a plurality of screws penetrate through the respective through holes and are in threaded connection with the respective threaded holes. The bottom end of each lifting upright post 2 is fixedly connected with a transverse supporting rod 11, if welded, the transverse supporting rod 11 is parallel to the transverse connecting rod 9 of the operation platform body 1, which extends along the width.

It can be easily understood that, due to the following requirement of the contraction closing structure, the above-mentioned lifting upright posts 2 are fixedly connected with the middle of the width of the two ends of the operating platform body 1, which means that the top end of each lifting upright post 2 is fixedly connected with the middle of the width of each platform frame 42 fixedly connected with the platform plate 8 at the two ends.

The top end of each lifting upright post 2 and two longitudinal connecting rods 10 outside the platform frame 42 fixedly connected with the platform plate 8 at two ends are fixedly connected with respective inclined reinforcing rods 32. The concrete structure is that the upper end of each oblique reinforcing rod 32 is welded with a first Contraband-shaped steel block 37 with an upward opening, the first Contraband-shaped steel block 37 is embedded outside a transverse connecting rod 9 of the platform frame 42, namely a rectangular steel pipe, the two vertical plates of the first Contraband-shaped steel block 37 and the two vertical plates of the rectangular steel pipe are provided with through holes which are coaxial with each other, and a bolt penetrates through the through holes and is fastened by a nut. The lower extreme welding of every oblique stiffener 32 has a rectangle steel sheet 43, has a plurality ofly as two through-holes on the rectangle steel sheet 43, and every 2 tops of lift stand have with these two through-hole coaxial screw holes, and a screw passes these two through-holes and screws in respective threaded hole.

The bottom of each transverse supporting rod 11 has a roller 13 at each end, that is, a total of four rollers 13 are arranged on two transverse supporting rods 11. The specific mounting structure of the roller 13 may be that the roller 13 is rotatably fitted on the roller frame 12, the top of the roller frame 12 has a mounting plate 14, the mounting plate 14 has a plurality of through holes, the bottom plate of each cross support bar 11, such as the bottom plate of a rectangular steel tube, has a plurality of threaded holes, and a plurality of screws pass through the respective through holes and are screwed with the respective threaded holes. The top of each of the two ends of each transverse support bar 11 is hinged with one end of a movable support bar 18, and the hinged point can be right above the center of the mounting plate 14 of the roller frame 12, so that the mechanical property is better. The specific structure of the hinge joint is, for example, a first short shaft 16 is fixedly connected to the top of each of the two ends of each of the transverse support rods 11, such as the top plate of a rectangular steel tube, for example, welded thereto, the end of the movable support rod 18 is a first hinge sleeve 15, the first hinge sleeve 15 is rotatably fitted to the first short shaft 16, and the top of the first short shaft 16 may have an axial position-limiting structure for the first hinge sleeve 15, such as a through hole passing through the center hole of an axial position-limiting circular plate and screwed into a screw hole (not shown) to prevent the first hinge sleeve 15 from moving upward and separating from the first short shaft 16. The other end of the movable supporting rod 18 is screwed with an adjusting screw rod 21, the bottom of the adjusting screw rod 21 is provided with a positioning disc 22 which is tightly abutted to the ground, the specific structure is that the other end of the movable supporting rod 18 is an internal thread sleeve 20, the adjusting screw rod 21 is screwed in the internal thread sleeve 20, the top of the adjusting screw rod 21 is fixedly connected with a circular screwed handle 19 through welding, and the bottom of the adjusting screw rod 21 is fixedly connected with the circular positioning disc 22 which is tightly abutted to the ground. The device comprises four movable supporting rods 18, four adjusting screws 21, four screwing handles 19 and four round positioning plates 22. Each movable support rod 18 can rotate about the axis of the first short shaft 16 by about 270 degrees so as to meet the requirements of firm support, stability and safety when the operation platform body 1 is extended and works and the requirements of folding in to reduce the volume when the operation platform body 1 is transported and stored.

The two sides of the joint of each transverse supporting rod 11 and each lifting upright post 2 are fixedly connected with stiffening angle steel 17 through welding and screwing by screws, and if the vertical plate of the stiffening angle steel 17 is welded with the bottom end of the lifting upright post 2, the transverse plate of the stiffening angle steel 17 is screwed with the transverse supporting rod 11 through screws. The two transverse supporting rods 11 are fixedly connected with four stiffening angle steels 17 together.

The lifting upright post 2 is a mature prior art, and can adopt a two-section or three-section lifting upright post driven by a movable ball screw pair linear lifting mechanism of an electric lifting office table, if the lifting upright post is adopted with patent application number of 201821427854.8 and named as a two-section lifting upright post in the electric lifting office table, the structure can be completely the same as that of a right leg, a motor such as a servo motor or a stepping motor is arranged on the bottom surface of an operation platform body 1, a transmission rod of a left leg is cancelled and is also directly driven by another motor, and the length of the lifting upright post 2 can be longer than that of the lifting upright post used for the electric lifting office table. For another example, the three-section type lifting column in the lifting table with the name of 201910687043.4 can be adopted, the structure can be completely the same as that of the right leg, a motor such as a servo motor or a stepping motor is installed on the bottom surface of the operation platform body 1, the left leg canceling transmission rod is also directly driven by another motor, and the length of the lifting column can be longer than that of the lifting column used for the electric lifting table. The fixed pipe of the lifting upright post 2 can be connected with the operation platform body 1, the movable pipe of the lifting upright post 2 can be connected with the transverse supporting rod 11, and certainly, the movable pipe of the lifting upright post can be connected with the operation platform body 1, and the fixed pipe of the lifting upright post can be connected with the transverse supporting rod. The motor can be installed on the operation platform body 1, also can install on the horizontal support rod. The lifting principle of the lifting column 2 also belongs to the prior art, and is not described in detail herein.

Operation platform body 1 includes many horizontal connecting rods 9 and many platform framves 42 that indulge connecting rod 10 and constitute, links firmly if welding the landing slab 8 at platform frame 42 top, is equipped with the rail 7 of door 6, links firmly if welding on platform frame 42 and be convenient for business turn over operation platform's step ladder 44.

The platform shelf 42 to which the platform plate 8 is attached is four pieces in the length direction, namely a left end piece 30, a middle piece 38, a middle piece 39 and a right end piece 41. Two middle platform frame 42's that have linked firmly platform board 8 adjacent sides are articulated each other, and each outside and the respective platform frame 42 that has linked firmly platform board 8 in both ends of two middle platform frame 42's that have linked firmly platform board 8 are articulated, refer to fig. 6, fig. 7, two middle platform frame 42 are the vertical state downwards when folding, four platform frame 42 that have linked firmly platform board 8 have hasp fixed knot to construct 5 on same horizontal plane and two middle platform frame 42 that have linked firmly platform board 8 between when extending.

Two adjacent hinge structures of the platform frame 42 fixedly connected with the platform plate 8 in the middle of the front side and the rear side are the same, in other words, the hinge structure of the front side and the hinge structure of the rear side are the same. The specific structure of each hinge structure may be: referring to fig. 3, a pair of first hinge eyes 24 is fixedly connected to the longitudinal connecting rod 10 on the side of one platform frame 38, and a pair of hinge eyes 27 is fixedly connected to the other platform frame 39, wherein the pair of first hinge eyes 24 is located on the inner side, the pair of second hinge eyes 27 is located on the outer side, the four hinge eyes of the two pairs are provided with coaxial through holes, a first pin shaft 25, also called a hinge shaft, is inserted into the four through holes and is rotatably matched with the four through holes, and an axial limiting structure, such as a cotter pin (not shown in the figure), is arranged on one end of the first pin shaft 25, which is far away from the large end, in the radial hole of the end. Referring to fig. 7, the right side of the longitudinal connecting rod 10 at the front and rear sides of the left end block 30 is fixedly connected, such as welded or screwed with a second Contraband-shaped steel block 47 with an opening facing the inside by using a screw, the longitudinal connecting rod 10, i.e. the rectangular steel pipe, at the front and rear sides of the middle block 38 and the middle block 39 is inserted into the opening groove of the second Contraband-shaped steel block 47, two straight plates of each second Contraband-shaped steel block 47 and two side plates of the rectangular steel pipe are respectively provided with through holes with the same axis, a second pin shaft 48 is inserted into the four through holes and is in running fit, and one end of the second pin shaft 48 away from the big end is provided with an axial limiting structure, such as a split pin (not shown in the figure) inserted into a radial hole at the end. It will be understood that the above structure of the right end block 41 is the same, symmetrically arranged.

The bottom surfaces of two longitudinal connecting rods 10 at the middle two adjacent positions of the front side and the rear side are symmetrically provided with the same lock catch fixing structures 5, in other words, the lock catch fixing structures 5 at the front side and the lock catch fixing structures 5 at the rear side are the same.

The latch fixing structure 5 is preferably a specific structure as follows: referring to fig. 3 and 7, two first rectangular steel pipes 23 of each latch fixing structure 5, which are collinear, are fixedly connected, such as welded, to the bottom surface of the respective longitudinal connecting rod 10, wherein one first rectangular steel pipe 23 is slidably fitted with a circular steel pipe 50, the circular steel pipe 50 is inserted into the other first rectangular steel pipe 23 when being extended, the respective butterfly-type locking screws 28 are screwed on the respective first rectangular steel pipes 23, and the circular steel pipe 50 is provided with a pair of radial through holes 51 through which the respective butterfly-type locking screws 28 pass to be locked. The screw-in may be that the rear side of the first rectangular steel tube 23 has a through hole, the rear side of the through hole is welded with a stub (not shown in the figure) with a threaded hole, the front side of the first rectangular steel tube 23 has an axially extended long through hole 29, and two butterfly-type locking screws 28 pass through the long through hole 29 on the front side and the through hole on the rear side respectively and are screwed in the threaded holes on the stub with the threaded hole for fastening. When the operation platform body 1 needs to be folded, one butterfly type locking screw 28 is screwed out, the circular steel pipe 50 is drawn towards the other end to be separated from one first rectangular steel pipe 23, and the butterfly type locking screw 28 at the other end limits the circular steel pipe 50 not to be separated from the other first rectangular steel pipe 23.

As shown in fig. 1, 4, 6, 7 and 8.

The rails 7 on the front and rear sides corresponding to the two middle platform frames 42 to which the platform boards 8 are attached are the doors 6, in other words, the rails 7 above the middle one 38 and the middle two 39 are the doors 6. The two doors 6 on the front and rear sides are hinged with the fences 7 at both ends, as with a conventional hinge 40. When each door 6 is opened and attached to the rail 7 at one end, a locking structure such as a tension spring type hook 46 can be directly hung on the rail 7 at the respective end, an upper door bolt and a lower door bolt are arranged on each door 6, the upper door bolt and the lower door bolt of each door 6 are respectively locked when the two doors 6 are closed to form a straight line, and the upper door bolt and the lower door bolt of each door 6 are respectively separated when the two doors 6 are opened and folded. A latching keeper 26 is shown. Or a plug-in type door bolt.

One or more longitudinal reinforcing rods 4 can be fixedly connected to the two lifting upright columns 2.

To accommodate the need to collapse during transport or storage, each longitudinal reinforcing rod 4 is preferably of a collapsible and expandable structure: each longitudinal reinforcing rod 4 is four sections, the left section 33 is one, the right section 35 is one, the number of the middle two sections is four, the two front sides 36 of the middle section 34 are symmetrically arranged with the two rear sides 55, the adjacent ends of the two front sides 36 are hinged, and the adjacent ends of the two rear sides 55 are hinged. The outer ends of the front two pieces 36 are hinged with the left section 33 and the right section 35, and the outer ends of the rear two pieces 55 are hinged with the left section 33 and the right section 35. The two front sides 36 of the middle section 34 are parallel and convex towards the front and perpendicular with respect to the longitudinal stiffeners 4 of the left and

right sections

33, 35 when folded, and the two rear sides 55 are parallel and convex towards the rear and perpendicular with respect to the longitudinal stiffeners 4 of the left and

right sections

33, 35 when folded. When the middle section 34 is extended, the two front sides 36 are in the same straight line, the two rear sides 55 of the middle section 34 are in the same straight line, and the two front sides 36 and the two rear sides 55 are detachably connected through the first bolt 3, and when the first bolt 3 needs to be retracted, the first bolt 3 is taken down.

The two adjacent ends of the middle section 34 are hinged together in the following specific structure: two adjacent rods are second rectangular steel pipes 49, two ends of two transverse plates of a transverse third Contraband-shaped steel block 54 with an inward opening are respectively provided with a pair of through holes, the adjacent ends of the two adjacent second rectangular steel pipes 49 are respectively embedded in an opening groove of the third Contraband-shaped steel block 54, two transverse plates at the adjacent ends of the two adjacent second rectangular steel pipes 49 are respectively provided with a pair of through holes coaxial with the pair of through holes of the third Contraband-shaped steel block 54, and two second bolts 53 penetrate through the pair of through holes on the third Contraband-shaped steel block 54 and the pair of through holes at one end of the transverse plates and are axially limited by nuts, but the through holes can rotate relative to the second bolts 53.

The outer ends of the two front sides 36 of the middle section 34 are hinged with the left section 33 and the right section 35, the outer ends of the two rear sides 55 are hinged with the left section 33 and the right section 35, and the front and rear sides of the middle section are identical in structure. Only two of the front sides 36 are taken as an example, the left end and the right end of the front side have the same structure and are symmetrical in position, and only the left end is taken as an example, and the specific structure is as follows: the inner end of the longitudinal reinforcing rod 4 of the left section 33 is fixedly connected with a fourth Contraband-shaped steel block 56 with a vertical inward opening through welding, the front sides of the two transverse plates of the fourth Contraband-shaped steel block 56 are provided with an upper and a lower pair of through holes, the rear sides of the two transverse plates of the fourth Contraband-shaped steel block 56 are also provided with an upper and a lower pair of through holes, two ends of the leftmost end of the second rectangular steel pipe 49 of the middle section 34 are respectively welded with a second hinge sleeve 57, the central holes of the two second hinge sleeves 57 are aligned with the respective upper and lower pair of through holes of the two transverse plates of the fourth Contraband-shaped steel block 56, respective third bolts 52 pass through the upper through holes, the central holes and the lower through holes of the second hinge sleeves 57 to be mutually matched in a rotating manner, and respective nuts axially limit the third bolts 52.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an operation platform of liftable, includes the operation platform body at top, its characterized in that: the automatic lifting platform is characterized by further comprising six sensors, a main controller and at least two lifting stand columns, wherein the top ends of the six sensors are fixedly connected with the operating platform body and driven by respective motors, the six sensors and the motors are electrically connected with the main controller, the six sensors are used for detecting the horizontal state of the operating platform body and transmitting electric signals to the main controller, and the main controller is used for automatically controlling the height difference of each lifting stand column to keep the operating platform body in the horizontal state all the time.

2. The liftable operating platform according to claim 1, wherein: the lifting stand columns are two, the top end of each lifting stand column is fixedly connected with the middle of the width of the two ends of the operating platform body, the bottom end of each lifting stand column is fixedly connected with a transverse supporting rod, and the transverse supporting rods are parallel to transverse connecting rods of the operating platform body, which extend along the width.

3. The liftable operating platform according to claim 2, wherein: the bottom at each transverse supporting rod both ends respectively has a gyro wheel, and the top at each transverse supporting rod both ends respectively hinges with the one end of a movable support rod, and the other end of movable support rod closes an adjusting screw soon, and adjusting screw's bottom has one to be used for supporting the positioning disk tight with ground.

4. The liftable operating platform according to claim 3, wherein: the two sides of the joint of each transverse supporting rod and each lifting upright post are fixedly connected with stiffening angle steel.

5. The liftable operating platform according to claim 2, wherein: the operation platform body includes the platform frame that comprises many horizontal connecting rods and many vertical connecting rods, links firmly the landing slab at the platform frame top, is equipped with the rail of door, links firmly the step ladder that passes in and out the operation platform body on the platform frame and be convenient for.

6. The liftable operating platform according to claim 5, wherein: the platform frame fixedly connected with the platform plate is four along the length direction, the adjacent sides of the middle two blocks are hinged with each other, each outer side of the middle two blocks is hinged with one of the two ends, the middle two blocks are downward in a vertical state when being folded, the four blocks are positioned on the same horizontal plane when being extended, and a lock catch fixing structure is arranged between the middle two blocks; the rails on the front side and the rear side corresponding to the two platform frames fixedly connected with the platform plate in the middle are doors, two doors on each side are hinged with the rails on the two ends, each door is provided with an upper door bolt and a lower door bolt, the upper door bolt and the lower door bolt of each door are respectively buckled when the two doors are closed to form a straight line, and the upper door bolt and the lower door bolt of each door are respectively separated when the two doors are opened and folded.

7. The liftable operating platform according to claim 6, wherein: the bottom surface symmetry of two vertical connecting rods of two adjacent departments in the middle of front and back side is equipped with the hasp fixed knot that the structure is the same: two rectangular steel pipes of each lock catch fixing structure, which are collinear, are fixedly connected to the bottom surfaces of the respective longitudinal connecting rods, a circular steel pipe is arranged in one rectangular steel pipe in a sliding fit mode, the circular steel pipe is inserted into the other rectangular steel pipe when the platform frame extends, the respective butterfly-type locking screws are screwed on the respective rectangular steel pipes, and a pair of radial through holes for locking the respective butterfly-type locking screws are formed in the circular steel pipes.

8. The liftable operating platform according to claim 6, wherein: every lift stand top links firmly in the middle of the width of each platform frame that has linked firmly the landing slab with each at both ends, links firmly respective oblique stiffener between two vertical connecting rods in the platform frame outside that has linked firmly the landing slab with each at every lift stand top and both ends.

9. The liftable operating platform according to claim 6, wherein: one or more longitudinal reinforcing rods are fixedly connected to the two lifting upright columns.

10. The liftable operating platform of claim 9, wherein: each longitudinal reinforcing rod is provided with four sections, the left section is one, the right section is one, the number of the middle two sections is four, the two front sides of the middle sections are symmetrically arranged with the two rear sides, the two adjacent ends of the front sides are hinged, and the two adjacent ends of the rear sides are also hinged; the outer ends of the two front sides are hinged with the left section and the right section, and the outer ends of the two rear sides are hinged with the left section and the right section; the two front sides of the middle section are parallel and protrude towards the front side and are vertical relative to the longitudinal reinforcing rods of the left and right sections during folding, and the two rear sides of the middle section are parallel and protrude towards the rear side and are vertical relative to the longitudinal reinforcing rods of the left and right sections during folding; when the folding umbrella is stretched, the two front sides of the middle section are on the same straight line, the two rear sides of the middle section are also on the same straight line, and the two front sides are detachably connected with the two rear sides.