Portable folding lifting stand

Abstract

The portable folding lifting frame of the present invention comprises a foldable construction frame and a foldable lifting frame, a lifting mechanism for driving the lifting frame to move up and down is arranged between the construction frame and the lifting frame, and the telescopic rods of the lifting mechanism are arranged on both sides of the construction frame. The present invention has the following beneficial effects: it can be used as a construction frame for ordinary decoration, and can safely and conveniently lift the plate, and save manpower; the decoration staff can stand on the construction frame under the plate to fix the plate to the ceiling; by folding the present invention, the volume is small, and it can be easily stored, moved and transported, and the operation is simple, and the parts will not be lost after disassembly, and it can be disassembled and assembled by hand.

Description

Technical Field

[0001] The invention relates to the technical field of building decoration construction, and in particular to a portable folding lifting frame. Background Art

[0002] In most interior decoration and decoration projects, construction frames are required, especially for interior decoration and indoor wall painting on construction sites. However, when the ceiling needs to be installed with a suspended ceiling, since the silicate panels used in the suspended ceiling are large and heavy, two or three decorators are required to stand on the construction frame to lift the panels and fix them on the ceiling at the same time. This process is very laborious and time-consuming.

[0003] In addition, traditional construction frames are fixed structures, which are wide, large, heavy, difficult to move and transport. They need to be disassembled at the door of the room, which is labor-intensive and time-consuming, and there is a risk that the disassembled parts may be lost. During the interior decoration construction process, the height of the ceiling is often not uniform, but the height of the traditional construction frame cannot be adjusted. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a portable folding lifting frame, which can conveniently lift the plate, and the decorators can fix the plate on the ceiling under the plate, and can be conveniently stored, moved and transported, and the operation is simple.

[0005] The technical solution for achieving the purpose of the present invention is: a portable folding lifting frame, characterized in that it includes a foldable construction frame and a foldable lifting frame, and a lifting mechanism is provided between the construction frame and the lifting frame to drive the lifting frame to move up and down.

[0006] Further, the construction frame includes two relatively arranged support leg frames, two upper cross bars connecting the upper parts of the two support leg frames and the middle parts of which are detachable, and two lower cross bars connecting the lower parts of the two support leg frames and the middle parts of which are foldable, the ends of the upper cross bars are hinged to the support leg frames, the ends of the lower cross bars are hinged to the support leg frames, and a supporting diagonal bar for increasing the supporting strength of the upper cross bar is provided between each of the frames and the upper cross bar, one end of the supporting diagonal bar is hinged to the frame, and the other end is detachably connected to the upper cross bar;

[0007] The lifting frame comprises two lifting rods arranged opposite to each other and two lifting cross rods which connect the ends of the two lifting rods and whose middle parts are detachable. The lifting cross rods are rotatably connected to the lifting rods.

[0008] For further optimization, a guiding telescopic rod is provided between the construction frame and the lifting frame.

[0009] Further optimization, the lifting mechanism includes a telescopic rod, a pull rope, a winding shaft for winding the pull rope and a driving motor for driving the winding shaft to rotate, the telescopic rod includes several sections of telescopic tubes II, the outermost telescopic tube II is fixed on the construction frame, and the upper end of the innermost telescopic tube II is fixedly connected to the lifting frame, one end of the pull rope is fixed on the winding shaft, and the other end enters the tube from the lower end of the telescopic tube II fixed on the construction frame and is fixed to the lower end of the innermost telescopic tube II after winding; two adjacent sections of telescopic tubes II, the lower end tube wall of the telescopic tube II located on the outer side is provided with a pull rope inlet, the lower end of the tube is provided with a lower guide wheel opposite to the pull rope inlet, and the upper end of the tube is provided with an upper guide wheel corresponding to the position of the lower guide wheel, and the pull rope comes out from the lower end of the telescopic tube II located on the inner side, passes through the upper guide wheel and the lower guide wheel in turn, and then extends out from the pull rope inlet.

[0010] Further optimization, the lifting mechanism includes a telescopic rod, a pull rope, a winding shaft for winding the pull rope and a driving motor for driving the winding shaft to rotate, the telescopic rod includes several sections of telescopic tubes II, the outermost telescopic tube II is fixed on the construction frame, and the upper end of the innermost telescopic tube II is fixedly connected to the lifting frame, one end of the pull rope is fixed on the winding shaft, and the other end enters the tube from the lower end of the telescopic tube II fixed on the construction frame and is fixed to the lower end of the innermost telescopic tube II after winding; two adjacent sections of telescopic tubes II, the lower end tube wall of the telescopic tube II located on the outer side is provided with a pull rope inlet, the lower end of the tube is provided with more than two lower guide wheels arranged in sequence opposite to the pull rope inlet, and the upper end of the tube is provided with an upper guide wheel corresponding to the position of the lower guide wheel far away from the pull rope inlet, and the pull rope comes out from the lower end of the telescopic tube II located on the inner side and passes through the upper guide wheel, the lower guide wheel corresponding to the position of the upper guide wheel, and the remaining lower guide wheels in sequence, and then extends out from the pull rope inlet.

[0011] Further optimization is provided in that both ends of the lifting rod are provided with connecting sleeves which are rotatable and match the lifting cross bar, and a detachable buckle structure is provided between the lifting cross bar and the connecting sleeve.

[0012] Further optimized, the lifting cross bar includes a first lifting cross bar and a second lifting cross bar, the end of the first lifting cross bar is provided with a fixing sleeve matching the end of the second lifting cross bar, the first lifting cross bar is provided with a long strip hole, and the fixing sleeve is provided with a guide pin matching the long strip hole.

[0013] Further optimization is provided in that a cross bar is provided between the two upper cross bars, one end of the cross bar is hinged to one of the upper cross bars, and the other end is connected to the other upper cross bar through a detachable pin hole structure, and a detachable pin hole structure for storing the cross bar is provided between the upper cross bars hinged to the cross bar.

[0014] Further optimization is provided in that one end of the supporting diagonal rod connected to the upper cross rod is provided with a pin shaft, the pin shaft is provided with a slot, the upper cross rod is provided with an diagonal rod through hole matching the pin shaft, and a clamping plate that fixes the supporting diagonal rod and the upper cross rod after matching with the slot, and the clamping plate is rotatably provided on the upper cross rod.

[0015] Further optimized, a universal roller 1 and a rotatable supporting cross bar are provided at the bottom of the support leg frame, and a universal roller 2 is provided at the bottom of the supporting cross bar.

[0016] The portable folding lifting frame of the present invention has the following beneficial effects: it can be used as a construction frame for ordinary decoration, and can lift the plate safely and conveniently, and saves manpower and labor; the decorators can stand on the construction frame under the plate to fix the plate to the ceiling; by folding the present invention, the volume is small, and it can be easily stored, moved and transported, the operation is simple, and the parts will not be lost after disassembly; it can be disassembled and assembled by hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the present invention in a disassembled state without the draw cord;

[0020] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at I in the middle;

[0021] Figure 4 yes Figure 2 The enlarged structural diagram of the middle part Ⅱ;

[0022] Figure 5 yes Figure 2 Schematic diagram of the enlarged structure at position III;

[0023] Figure 6 yes Figure 2 The enlarged structural diagram of the middle IV;

[0024] Figure 7 yes Figure 2 The enlarged structural diagram at point V in the middle;

[0025] Figure 8 It is a schematic diagram of the structure of the driving motor bracket and the lock in the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the present invention in a folded state with the drive motor, the drive motor bracket, the lock buckle, the winding shaft, and the pull rope removed;

[0027] Fig.10It is a schematic diagram of the cross-sectional structure of the telescopic rod of the present invention;

[0028] Fig.11 It is a schematic cross-sectional structure diagram of the telescopic rod of the second embodiment.

[0029] In the figure: construction frame 100, support leg frame 110, support leg cross bar 111, column 112, connecting rod 113, upper cross bar 120, first upper cross bar 121, second upper cross bar 122, fixed clamping plate 123, clamping plate through hole 124a, clamping plate through hole 124b, inclined rod through hole 125a, inclined rod through hole 125b, clamping plate 126, clamping column 127, rod through hole 128, clamping hole 129, Lower cross bar 130, first lower cross bar 131, second lower cross bar 132, hinge 133, plug rod 134, lower cross bar long strip hole 135, plug rod push column 136, support diagonal rod 140, pin 141, slot 142, lever 150, cylindrical pin 151, universal roller 160, support cross bar 170, universal roller 2 171, drive motor bracket 180, lock 181, lifting frame 200, lifting rod 210, lifting cross bar 220, first lifting cross bar 221, second lifting cross bar 222, spring pin 1 223, long strip hole 224, spring pin 225, connecting sleeve 230, through hole 1 231, fixing sleeve 240, guide pin 241, through hole 242, lifting mechanism 300, telescopic rod 310, telescopic tube II 311a, telescopic tube II 311b, telescopic Tube II 311c, pull rope inlet 312, lower guide wheel 313, upper guide wheel 314, pull rope 320, winding shaft 330, drive motor 340, telescopic rod 310', telescopic tube II 311a', telescopic tube II 311b', telescopic tube II 311c', telescopic tube II 311d', lower guide wheel 313a, lower guide wheel 313b, guide telescopic rod 400, telescopic tube I 410. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] like Figures 1 to 10 As shown, a portable folding lifting frame includes a construction frame 100 and a lifting frame 200, wherein a lifting mechanism 300 and a guide telescopic rod 400 for driving the lifting frame 200 to move up and down are arranged between the construction frame 100 and the lifting frame 200.

[0032] The construction frame 100 includes two relatively arranged support frames 110, two upper cross bars 120 connecting the upper parts of the two support frames 110 and the middle parts of which are detachable, and two lower cross bars 130 connecting the lower parts of the two support frames 110 and the middle parts of which are foldable. The support frame 110 includes a support cross bar 111 and two tubular columns 112 fixed on the support cross bar 111, and a connecting rod 113 is provided between the two columns 112.

[0033] The end of the upper cross bar 120 is hinged to the upper part of the column 112, and the end of the lower cross bar 130 is hinged to the foot cross bar 111. A supporting diagonal rod 140 for increasing the supporting strength of the upper cross bar 120 is provided between each foot cross bar 111 and the upper cross bar 120. One end of the supporting diagonal rod 140 is hinged to the foot cross bar 111, and the other end is detachably connected to the upper cross bar 120.

[0034] The upper cross bar 120 is made of L-shaped angle steel, the horizontal plate of the upper cross bar 120 is located at the top, and the vertical plate is located at the bottom and arranged outward, the upper cross bar 120 includes a first upper cross bar 121 and a second upper cross bar 122, and a fixed clamping plate 123 extending in the length direction and connected to the second upper cross bar 122 is fixed at one end of the first upper cross bar 121 close to the second upper cross bar 122, and the fixed clamping plate 123 is provided with two clamping plate through holes 124a and 124b;

[0035] A pin 141 is provided at one end of the supporting diagonal rod 140 connected to the upper cross bar 120, and the pin 141 is provided with a radial groove 142. The vertical plate of the upper cross bar 120 is provided with diagonal rod through holes 125a and 125b matching the pin 141, and a clamping plate 126 is provided on the outer side thereof for fixing the supporting diagonal rod 140 and the upper cross bar 120 together after matching the groove 142. The clamping plate 126 is rotatably provided on the vertical plate of the upper cross bar 120; the two diagonal rod through holes 125a and 125b are respectively located on the first upper cross bar 121 and the second upper cross bar 122.

[0036] A clamping column 127 matching one of the clamping plate through holes 124 a is provided on the inner side of the vertical plate of the second upper cross bar 122 . The position of the other clamping plate through hole 124 b is equivalent to the position of the oblique rod through hole 125 b located on the second upper cross bar 122 and matches the pin shaft 141 .

[0037] A spanning rod 150 is provided between the two upper cross bars 120, one end of the spanning rod 150 is hinged to one of the upper cross bars 120, and the other end is provided with a cylindrical pin 151, and the other upper cross bar 120 is provided with a spanning rod through hole 128 matching the cylindrical pin 151, and the upper cross bar 120 hinged to the spanning rod 150 is provided with a clamping hole 129 matching the cylindrical pin 151 when the spanning rod 150 is stored. For the convenience of processing, some of the spanning rod through holes 128 and the clamping holes 129 are the same through holes.

[0038] The lower cross bar 130 is a square tube, and includes a first lower cross bar 131 and a second lower cross bar 132. The first lower cross bar 131 and the second lower cross bar 132 are connected by a hinge 133, and the hinge 133 is arranged below the first lower cross bar 131 and the second lower cross bar 132, so that the first lower cross bar 131 and the second lower cross bar 132 can only be folded downward. The first lower cross bar 131 is provided with an insertion rod 134 that matches the second lower cross bar 132, the first lower cross bar 131 is provided with a lower cross bar long strip hole 135, and the insertion rod 134 is provided with an insertion rod push column 136 that matches the lower cross bar long strip hole 135. By pushing the insertion rod push column 136, the insertion rod 134 is inserted into the tube of the second lower cross bar 132, so that the lower cross bar 130 always maintains a straight rod state when unfolded.

[0039] The lifting frame 200 includes two lifting rods 210 arranged opposite to each other, and two lifting cross bars 220 connecting the ends of the two lifting rods 210 and having detachable middle parts. The lifting cross bars 220 are rotatably connected to the lifting rods 210 .

[0040] Both ends of the lifting rod 210 are provided with connecting sleeves 230 that are rotatable and match the lifting cross bar 220. A detachable snap-in structure is provided between the lifting cross bar 220 and the connecting sleeve 230. The snap-in structure includes a spring pin 223 provided on the lifting cross bar 220 and a through hole 231 provided on the connecting sleeve 230 and matching the spring pin 221.

[0041] The lifting cross bar 220 includes a first lifting cross bar 221 and a second lifting cross bar 222. The end of the first lifting cross bar 221 is provided with a fixing sleeve 240 matching the end of the second lifting cross bar 222. The first lifting cross bar 221 is provided with a long strip hole 224. The fixing sleeve 240 is provided with a guide pin 241 matching the long strip hole 224. The second lifting cross bar 222 is provided with a second spring pin 225. The fixing sleeve 240 is provided with a second through hole 242 matching the second spring pin 225.

[0042] The guide telescopic rod 400 includes three sections of telescopic tubes I 410 , wherein the lower end of the telescopic tube I 410 directly adopts the column 112 , and the upper end of the guide telescopic rod 400 is fixedly connected to the lifting rod 210 .

[0043] The bottom of the support cross bar 111 is provided with two universal rollers 160 and a rotatable support cross bar 170 . The support cross bar 170 is arranged between the two universal rollers 160 . The bottom of the support cross bar 170 is provided with two universal rollers 171 .

[0044] The lifting mechanism 300 includes a telescopic rod 310, a pull rope 320, a winding shaft 330 for winding the pull rope 320, and a driving motor 340 for driving the winding shaft 330 to rotate. The telescopic rod 310 includes three sections of telescopic tubes II 311a, 311b, and 311c. The outermost telescopic tube II 311a is fixed to the support cross bar 111 and is located between the columns 112. The upper end of the innermost telescopic tube II 311c is fixedly connected to the lifting rod 210. One end of the pull rope 320 is fixed to the winding shaft 330, and the other end is connected to the support cross bar 111. The lower end of the telescopic tube II 311a enters the tube and is fixed at the lower end of the innermost telescopic tube II 311c after being wound; the lower end tube wall of the telescopic tube II 311b located on the outer side of the two adjacent sections of telescopic tubes II 311b and 311c is provided with a pull rope entrance 312, and a lower guide wheel 313 opposite to the pull rope entrance 312 is provided at the lower end of the tube, and an upper guide wheel 314 corresponding to the position of the lower guide wheel 313 is provided at the upper end of the tube. After coming out of the lower end of the telescopic tube II 311c located on the inner side, the pull rope passes through the upper guide wheel 314 and the lower guide wheel 313 in sequence, and then extends out from the pull rope entrance 312.

[0045] There are two telescopic rods, which are respectively arranged on the two supporting foot cross bars 111.

[0046] A detachable driving motor bracket 180 is disposed between the two lower cross bars 130 , and a lock 181 is disposed between the driving motor bracket 180 and the lower cross bar 130 for fixing the driving motor bracket 180 on the lower cross bar 130 .

[0047] The lifting mechanism 300 further includes a controller (not shown) for controlling the operation of the motor.

[0048] Embodiment 2

[0049] like Fig.11 As shown, compared with the first embodiment, the telescopic rod 310' comprises four sections of telescopic tubes II 311a', 311b', 311c' and 311d'. Two adjacent sections of telescopic tubes II 311c' and 311d' have a pull rope inlet 312 on the lower end wall of the telescopic tube II 311c' located on the outside, two lower guide wheels 313a and 313b arranged in sequence opposite to the pull rope inlet 312 are provided at the lower end of the tube, and an upper guide wheel 314 corresponding to the position of the lower guide wheel 313b far away from the pull rope inlet 312 is provided at the upper end of the tube. After coming out from the lower end of the telescopic tube II 311d' located on the inside, the pull rope 320 passes through the upper guide wheel 314, the lower guide wheel 313b corresponding to the position of the upper guide wheel 314, and the remaining lower guide wheel 313a in sequence, and then extends out from the pull rope inlet 312.

[0050] Usage process:

[0051] The initial state is the unfolded state. A foot pedal is placed above the construction frame. The decorators can stand on the construction frame 100 to paint the roof and walls. At this time, the lifting frame 200 can be used as a guardrail. If it is necessary to lift the ceiling board, the decorators put the board on the lifting frame 200, and lift the lifting frame 200 through the lifting mechanism 300, so as to lift the board to the required height. The lifting mechanism 300 stops working, and the decorators stand on the construction frame to easily fix the board on the ceiling.

[0052] Folding the present invention

[0053] Remove the lifting crossbar 210, press the spring pin 225 on the second lifting crossbar 222 to disengage it from the through hole 242, thereby pushing the fixed sleeve 240, so that the first lifting crossbar 221 and the second lifting crossbar 222 are separated. Since the connecting sleeve 230 is rotatable relative to the lifting bar 210, the first lifting crossbar 221 and the second lifting crossbar 222 can be placed vertically. Remove the lever 150, disengage the cylindrical pin 151 of the lever 150 from the lever through hole 128, rotate the lever 150 to merge the lever 150 with the upper crossbar 120 and insert the cylindrical pin 151 into the clamping hole 129, and the lever 150 is stored. Remove the support diagonal rod 140, rotate the clamping plate 126 to disengage it from the clamping slot 142, disengage the pin shaft 141 from the diagonal rod through hole 125a / 125b, and rotate the support diagonal rod 140 to make it close to the column 112. Remove the upper crossbar 120, bend the first upper crossbar 121 inward, and make the fixed clamping plate 123 disengage from the clamping column 127, so as to lower the first upper crossbar 121 and the second upper crossbar 122. At this time, bend the supporting diagonal rod 140 to make it fall into the groove formed by the first upper crossbar 121 / the second upper crossbar 122 and the column 112. Fold the lower crossbar 130, push the insertion rod pushing column 136 to make the insertion rod 134 disengage from the tube of the second lower crossbar 132. Push the support leg frame 110, so that the middle part of the lower crossbar 130 is folded upward, so that the two support leg frames 110 are as close as possible. At this time, rotate the supporting crossbar 170 so that it forms an angle with the support leg crossbar 111, which effectively ensures that the present invention is not easy to fall down after folding.

[0054] To unfold the present invention, the two leg frames 110 are pushed apart, the lower cross bar 130 is straightened, and the insertion rod push column 136 is pushed to insert the insertion rod 134 into the tube of the second lower cross bar 132 . Take out the supporting diagonal rod 140 from the groove formed by the upper cross bar 120 and the column 112, lift the first upper cross bar 121 and the second upper cross bar 122, insert the card plate through hole 124a of the fixed card plate 123 into the card column 127, insert the pin 141 of the supporting diagonal rod 140 close to the second upper cross bar 122 into the card plate through hole 124b and the diagonal rod through hole 125b, rotate the card plate 126 to make it snap into the card groove 142, and fix the supporting diagonal rod 140 to the second upper cross bar 122. Similarly, insert the pin 141 of the supporting diagonal rod 140 close to the first upper cross bar 121 into the diagonal rod through hole 125a, rotate the card plate 126 to make it snap into the card groove 142, and fix the supporting diagonal rod 140 to the first upper cross bar 121. Lift the first lifting cross bar 221 and the second lifting cross bar 222 to align their ends, push the fixing sleeve 240 to make it sleeved on the second lifting cross bar 222, and make the second spring pin 225 bounce into the second through hole 242.

Claims

1. A portable folding lifting frame, characterized in that: It comprises a foldable construction frame and a foldable lifting frame, wherein a lifting mechanism is provided between the construction frame and the lifting frame to drive the lifting frame to move up and down; A guide telescopic rod is provided between the construction frame and the lifting frame; The construction frame includes two oppositely arranged support leg frames, two upper cross bars connecting the upper parts of the two support leg frames and having detachable middle parts, and two lower cross bars connecting the lower parts of the two support leg frames and having foldable middle parts, the ends of the upper cross bars are hinged to the support leg frames, the ends of the lower cross bars are hinged to the support leg frames, and a supporting diagonal bar for increasing the supporting strength of the upper cross bar is provided between each of the frames and the upper cross bar, one end of the supporting diagonal bar is hinged to the frame, and the other end is detachably connected to the upper cross bar; The lifting frame comprises two lifting rods arranged opposite to each other, and two lifting cross rods connecting the ends of the two lifting rods and having detachable middle parts, wherein the lifting cross rods are rotatably connected to the lifting rods; Both ends of the lifting rod are provided with connecting sleeves which are rotatable and match the lifting cross bar, and a detachable buckle structure is provided between the lifting cross bar and the connecting sleeve; The lifting cross bar includes a first lifting cross bar and a second lifting cross bar, the end of the first lifting cross bar is provided with a fixing sleeve matching the end of the second lifting cross bar, the first lifting cross bar is provided with a long strip hole, and the fixing sleeve is provided with a guide pin matching the long strip hole.

2. A portable folding lifting frame according to claim 1, characterized in that: The lifting mechanism includes a telescopic rod, a pull rope, a winding shaft for winding the pull rope and a driving motor for driving the winding shaft to rotate. The telescopic rod includes several sections of telescopic tubes II. The outermost telescopic tube II is fixed on the construction frame, and the upper end of the innermost telescopic tube II is fixedly connected to the lifting frame. One end of the pull rope is fixed on the winding shaft, and the other end enters the tube from the lower end of the telescopic tube II fixed on the construction frame and is fixed to the lower end of the innermost telescopic tube II after being wound; two adjacent sections of telescopic tubes II, the lower end tube wall of the telescopic tube II located on the outer side is provided with a pull rope inlet, the lower end of the tube is provided with a lower guide wheel opposite to the pull rope inlet, and the upper end of the tube is provided with an upper guide wheel corresponding to the position of the lower guide wheel. After the pull rope comes out from the lower end of the telescopic tube II located on the inner side, it passes through the upper guide wheel and the lower guide wheel in sequence, and then extends out from the pull rope inlet.

3. The portable folding lifting frame according to claim 1, characterized in that: The lifting mechanism includes a telescopic rod, a pull rope, a winding shaft for winding the pull rope and a driving motor for driving the winding shaft to rotate. The telescopic rod includes several sections of telescopic tubes II. The outermost telescopic tube II is fixed on the construction frame, and the upper end of the innermost telescopic tube II is fixedly connected to the lifting frame. One end of the pull rope is fixed on the winding shaft, and the other end enters the tube from the lower end of the telescopic tube II fixed on the construction frame and is fixed to the lower end of the innermost telescopic tube II after being wound; two adjacent sections of telescopic tubes II, the lower end tube wall of the telescopic tube II located on the outer side is provided with a pull rope inlet, the lower end of the tube is provided with more than two lower guide wheels arranged in sequence opposite to the pull rope inlet, and the upper end of the tube is provided with an upper guide wheel corresponding to the position of the lower guide wheel far away from the pull rope inlet. After coming out of the lower end of the telescopic tube II located on the inner side, the pull rope passes through the upper guide wheel, the lower guide wheel corresponding to the position of the upper guide wheel, and the remaining lower guide wheels in sequence, and then extends out from the pull rope inlet.

4. The portable folding lifting frame according to claim 1, characterized in that: A spanning rod is provided between the two upper cross bars, one end of the spanning rod is hinged to one of the upper cross bars, and the other end is connected to the other upper cross bar through a detachable pin hole structure, and a detachable pin hole structure for storing the spanning rod is provided between the upper cross bars hinged to the spanning rod.

5. The portable folding lifting frame according to claim 1, characterized in that: A pin is provided at one end of the supporting diagonal rod connected to the upper cross bar, and the pin is provided with a slot. The upper cross bar is provided with an oblique rod through hole matching the pin, and a clamping plate that fixes the supporting diagonal rod and the upper cross bar after matching the slot, and the clamping plate is rotatably arranged on the upper cross bar.

6. The portable folding lifting frame according to claim 1, characterized in that: A universal roller 1 and a rotatable supporting cross bar are arranged at the bottom of the supporting leg frame, and a universal roller 2 is arranged at the bottom of the supporting cross bar.

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