CN115897971B - Scaffold convenient to adjust - Google Patents

Abstract

The invention relates to a scaffold, in particular to a scaffold convenient to adjust. The invention provides a scaffold convenient to adjust, which can adjust the required height more stably and rapidly, is time-saving and labor-saving, has high safety and can effectively improve the construction efficiency. The scaffold convenient to adjust comprises a lower frame, a vertical shaft, an upper frame, a sliding sleeve and the like; six vertical shafts are connected to the lower frame in a rotating mode, an upper frame is connected between the six vertical shafts in a rotating mode, and sliding sleeves are sleeved on the vertical shafts. The staff pulls two handles to remove, lets the fixture block break away from the draw-in groove, promotes back the profile frame fast according to the height of construction requirement and reciprocates afterwards, adjusts the height of bearing frame, then unclamps the handle, lets the fixture block again card go into the draw-in groove in, locks back the profile frame, and then can the high of quick adjustment bearing frame to lock it in the position of construction requirement, make things convenient for the staff to carry out construction operation to the different height of construction building, can effectively improve the efficiency of construction like this.

Description

Scaffold convenient to adjust

Technical Field

The invention relates to a scaffold, in particular to a scaffold convenient to adjust.

Background

The scaffold is a working platform which is erected for ensuring that each construction process is smoothly carried out, when working at a high place, workers usually adopt the scaffold to assist in working, the workers can finish the working at a certain height by stepping on the scaffold, the construction efficiency is improved, the types of the scaffold are various, and the scaffolds with different purposes can be selected for different types of engineering construction.

In the construction process of some small-sized buildings, some small-sized scaffolds are used for assisting in operation, but because the height position of construction is required to be continuously replaced according to the construction requirement in the construction process, workers need to frequently disassemble and reassemble the scaffolds, the operation steps are complicated, and the construction efficiency is low. At present, some scaffolds can be adjusted in height through carrying the support plate, but a plurality of workers are required to carry simultaneously, time and labor are wasted, the support plate can be placed unstably, simultaneous construction operation of a plurality of workers is inconvenient, and the danger coefficient is large.

Disclosure of Invention

In view of the above, the invention provides a scaffold convenient to adjust, which can adjust the required height more stably and rapidly, saves time and labor, has high safety and can effectively improve the construction efficiency.

The technical implementation scheme of the invention is as follows: the utility model provides a scaffold frame convenient to adjust, includes lower frame, vertical axis, upper frame, sliding sleeve, returns type frame, bearing frame, actuating mechanism and chucking mechanism, it is six to rotate on the lower frame vertical axis, six rotate between the vertical axis and be connected with the upper frame, each all overlap on the vertical axis has the sliding sleeve, six fixedly connected with returns type frame between the sliding sleeve, bearing frame slidingtype connection is on returning type frame, actuating mechanism establishes on the upper frame, each all be equipped with chucking mechanism on the sliding sleeve.

In a preferred embodiment of the invention, the driving mechanism comprises a column gear, racks, a handle, movable sheets, fixing sheets and a return spring, wherein the top end of each vertical shaft is fixedly connected with the column gear, each column gear is positioned in an upper frame, two racks are connected in a sliding mode in the upper frame, the two racks are arranged in a staggered mode, each column gear is meshed with each rack, one end of each rack is rotatably connected with the handle, each rack is fixedly connected with two movable sheets, four fixing sheets are fixedly connected on the inner wall of the upper frame, and the return spring is connected between each movable sheet and each fixing sheet.

In a preferred embodiment of the present invention, the clamping mechanism includes a clamping block and a clamping spring, two grooves are formed on the inner side of each sliding sleeve, two grooves on the same sliding sleeve are symmetrically arranged, each groove is connected with the clamping block in a sliding manner, the clamping spring is connected between each clamping block and the sliding sleeve, a plurality of clamping grooves are formed on each vertical shaft, two clamping grooves are in a group, and the clamping blocks are clamped into one clamping groove.

In a preferred embodiment of the invention, the sliding frame further comprises a guide assembly, the guide assembly is arranged on the lower frame and connected with the upper frame, the guide assembly comprises a mounting plate and six-edge sliding rods, two mounting plates are fixedly connected to the top of the lower frame and the bottom of the upper frame, two mounting plates are in a group, two six-edge sliding rods are fixedly connected between the two mounting plates, the six-edge sliding rods are of hollow structures, each six-edge sliding rod is fixedly connected with the lower frame and the upper frame, and the square frame is in sliding connection with four six-edge sliding rods.

In a preferred embodiment of the present invention, the present invention further includes an adjusting assembly, the upper frame and the lower frame are respectively provided with an adjusting assembly, the adjusting assembly includes a cross shaft, a hole column, a reel and a wire rope, the upper frame and the lower frame are respectively connected with two cross shafts in a rotating manner, the two cross shafts located on the upper frame are symmetrically disposed, the two cross shafts located on the lower frame are symmetrically disposed, each cross shaft is respectively connected with a six-edge slide bar in a rotating manner, two ends of each cross shaft are respectively connected with a hole column, each hole column is respectively provided with a vertical hole, each cross shaft is respectively connected with two reels, each reel is respectively connected with a six-edge slide bar in a penetrating manner, each reel is respectively connected with a wire rope in a rotating manner, each wire rope is wound on each reel, the other end of each wire rope is respectively connected with a return frame in a rotating manner, four wire ropes located above pass through the upper frame, and four wire ropes located below the four wire ropes pass through the lower frames.

In a preferred embodiment of the present invention, the present invention further includes a control mechanism, the control mechanism is disposed on the vertical shaft, the control mechanism includes friction circular plates, friction square plates and connection springs, the bottom ends of the vertical shafts located at the left side and the right side of the lower frame are fixedly connected with the friction circular plates, each friction circular plate is located in the lower frame, friction square plates are slidably connected between the lower parts of the two vertical shafts located at the same side of the lower frame, each friction square plate is located in the lower frame, the friction square plates are located above the friction circular plates, openings are formed at the left side and the right side of the lower frame, the two openings are symmetrically disposed, the friction square plates pass through the openings, and two connection springs are connected between the lower frame and each friction square plate.

In a preferred embodiment of the invention, the safety mechanism is arranged on the sliding sleeve, the safety mechanism comprises horizontal sliding rods, arc friction plates and horizontal springs, the two sliding sleeves positioned in the middle of the square frame are connected with the horizontal sliding rods in a sliding mode, the two horizontal sliding rods are in contact with the bearing frame, the arc friction plates are fixedly connected to the two horizontal sliding rods, the horizontal springs are connected between the sliding sleeve and the arc friction plates, and inclined openings are formed in the left side and the right side of the middle of the bearing frame.

In a preferred embodiment of the present invention, the present invention further comprises a bearing frame, and the bearing frame is fixedly connected to the bottom of the bearing frame.

The staff pulls two handles to the direction removal that keeps away from each other for the vertical axis rotates ninety degrees, lets the fixture block break away from the draw-in groove, and the fixture block no longer is spacing to the sliding sleeve, promotes back the profile frame according to the high quick of construction requirement and reciprocates, adjusts the height of bearing frame afterwards, loosens the handle, makes the vertical axis reverse rotation ninety degrees, lets the fixture block card go into the draw-in groove again, and is spacing again to the sliding sleeve, locks back the profile frame, and then can the high of quick adjustment bearing frame to lock it in the position of construction requirement, make things convenient for the staff to carry out construction operation to the different co-altitude of construction building, can effectively improve the efficiency of construction like this.

In addition, when the staff promotes the back frame and reciprocates, six arris slide bars can lead back frame, let back frame steady and reciprocate fast for the staff promotes more laborsaving when back frame reciprocates, makes six sliding sleeves keep horizontally state simultaneously, so that the fixture block can fast and stably block into the draw-in groove, carries out quick locking to sliding sleeve and back frame, thereby can fast and stably adjust the height of bearing frame.

In addition, after the staff pulls the handle to remove, rotate the hole post that is located top or below, and then roll up the wire rope that is located top or below, because every wire rope atress is even, so wire rope pulls the dynamics of returning the profile frame and reciprocate also even, can pull returning profile frame and bearing frame more steadily and reciprocate like this to more stable reciprocate returning profile frame, adjust the height of bearing frame.

In addition, after the staff pulls the handle to remove, trample friction square plate by other two staff and remove downwards, lock the vertical axis, the staff can loosen the handle like this to vacate the hand and rotate the hole post that is located top or below, just so need several people just can adjust the height of back type frame fast, labour saving and time saving more is applicable to the scene of minority people's construction operation.

In addition, when a worker stands on the bearing frame, the bearing frame can extrude the horizontal sliding rod to move, so that the arc friction plate extrudes the vertical shaft, the friction force between the sliding sleeve and the vertical shaft is increased, and the square frame can be locked on the vertical shaft more stably; when more people stand on the bearing frame, the force of the arc friction plate extruding the vertical shaft is larger, so that the friction force between the sliding sleeve and the vertical shaft is larger, the square frame is firmly locked on the vertical shaft, the bearing frame can support more people, and simultaneous multi-person operation is supported; meanwhile, when someone is on the bearing frame, the arc friction plate can lock the sliding sleeve by oneself, so that a worker cannot unlock the mold frame, and the situation that the worker falls down due to misunlocking of the bearing frame can be avoided, and the hand and foot frames are safer.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional perspective view of the driving mechanism of the present invention.

Fig. 3 is a schematic perspective view, partially in section, of the drive mechanism and adjustment assembly of the present invention.

Fig. 4 is a schematic cross-sectional perspective view of the present invention.

Fig. 5 is an enlarged perspective view of fig. 4 a according to the present invention.

Fig. 6 is a schematic view of a partially cut-away perspective view of the clamping mechanism of the present invention.

Fig. 7 is a schematic view of a partially cut-away perspective of the clamping mechanism and safety mechanism of the present invention.

Fig. 8 is a schematic view of a first partial cross-sectional perspective structure of the present invention.

Fig. 9 is a schematic partial perspective view of the control mechanism of the present invention.

Fig. 10 is a schematic view of a control mechanism of the present invention in a partially cut-away perspective.

FIG. 11 is a schematic view of a partial perspective view of the vertical shaft, clamping groove and friction disk of the present invention.

Fig. 12 is a schematic perspective view of a guide assembly of the present invention in cross-section.

Fig. 13 is a schematic perspective view, partially in section, of a first type of guide assembly and adjustment assembly of the present invention.

Fig. 14 is a schematic partial cross-sectional perspective view of a second type of guide assembly and adjustment assembly of the present invention.

Fig. 15 is a schematic view of a second partial cross-sectional perspective structure of the present invention.

Fig. 16 is an enlarged perspective view of the structure of fig. 15B according to the present invention.

Wherein the above figures include the following reference numerals: 1. lower frame, 2, vertical axis, 3, upper frame, 4, sliding sleeve, 5, square frame, 51, bearing frame, 61, column gear, 62, rack, 621, handle, 63, movable piece, 64, fixed piece, 65, reset spring, 71, groove, 72, fixture block, 73, clamp spring, 74, clamping groove, 81, mounting plate, 82, six-edged slide bar, 91, horizontal axis, 92, hole column, 93, reel, 94, wire rope, 101, friction circular plate, 102, friction square plate, 103, opening, 104, connecting spring, 111, horizontal slide bar, 112, arc friction plate, 113, horizontal spring, 114, bevel, 12, bearing frame.

Detailed Description

In order to make the object technical scheme and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1: the utility model provides a scaffold frame convenient to adjust, is shown as fig. 1-6, including lower frame 1, vertical axis 2, go up frame 3, sliding sleeve 4, back frame 5, bearing frame 51, actuating mechanism and chucking mechanism, be connected with six vertical axes 2 on the lower frame 1, six vertical axes 2 are vertical setting, six rotation type is connected with go up frame 3 between the vertical axis 2, six vertical axes 2 all are located between lower frame 1 and the upper frame 3, every all overlap on the vertical axis 2 has sliding sleeve 4, six fixedly connected with back frame 5 between the sliding sleeve 4, bearing frame 51 slidingly connects on back frame 5, actuating mechanism sets up on upper frame 3, actuating mechanism is used for unblock to back frame 5, each all be equipped with chucking mechanism on the sliding sleeve 4, chucking mechanism is used for locking back frame 5.

The driving mechanism comprises a column gear 61, racks 62, handles 621, movable plates 63, fixing plates 64 and reset springs 65, wherein each column gear 61 is connected to the top end of each vertical shaft 2 through a flat key, each column gear 61 is located in an upper frame 3, two racks 62 are connected to the upper frame 3 in a sliding mode, the two racks 62 are arranged in a staggered mode, the racks 62 are arranged horizontally, each column gear 61 is meshed with each rack 62, one end of each rack 62 is connected with a handle 621 in a rotating mode, each movable plate 62 is connected with two movable plates 63 through bolts, four fixing plates 64 are connected to the inner wall of the upper frame 3 through bolts, reset springs 65 are connected between each movable plate 63 and each fixing plate 64 through hooks, and the reset springs 65 are located in the upper frame 3.

The clamping mechanism comprises clamping blocks 72 and clamping springs 73, two grooves 71 are formed in the inner side of each sliding sleeve 4, two grooves 71 located on the same sliding sleeve 4 are symmetrically arranged, each clamping block 72 is connected in each groove 71 in a sliding mode, each clamping block 72 is connected with each clamping spring 73 through a hook, a plurality of clamping grooves 74 are formed in each vertical shaft 2, two clamping grooves 74 are in a group, and each clamping block 72 is clamped into one clamping groove 74.

In actual operation, the scaffold is placed beside a construction building, firstly, two workers pull the handles 621 to swing upwards, then simultaneously pull the two handles 621 to move in the direction away from each other, the movement of the handles 621 drives the racks 62 and the movable piece 63 to move together, the return spring 65 is stretched, the movement of the racks 62 drives the pillar gears 61 meshed with the racks to rotate ninety degrees, the rotation of the pillar gears 61 drives the vertical shaft 2 to rotate ninety degrees, the rotation of the vertical shaft 2 can press the two clamping blocks 72 to move in the direction away from each other, the clamping springs 73 are compressed, the clamping blocks 72 move to no longer clamp the clamping grooves 74, so that the clamping grooves 74 no longer limit the sliding sleeve 4, the sliding sleeve 4 and the return frame 5 do not move downwards under the action of gravity due to certain friction force between the sliding sleeve 4 and the vertical shaft 2, then the return frame 5 is pushed upwards or downwards by other workers, the upward or downward movement of the square frame 5 can drive the bearing frame 51 to move upward or downward, so as to adjust the bearing frame 51 to the height required by construction, after that, a worker releases the handle 621, the handle 621 swings downward under the action of gravity, the reset spring 65 resets to drive the rack 62 and the movable piece 63 to reset together, the rack 62 resets to drive the post gear 61 to rotate ninety degrees reversely, the post gear 61 rotates ninety degrees reversely to drive the vertical shaft 2 to rotate ninety degrees reversely, the clamping block 72 is not extruded any more by the reverse rotation of the vertical shaft 2, the clamping spring 73 resets to drive the clamping block 72 to be clamped into one of the clamping grooves 74, the clamping groove 74 is used for limiting the sliding sleeve 4 again, the square frame 5 is locked, then the worker can stand on the bearing frame 51 for construction, when the construction height of the bearing frame 51 needs to be changed, the worker firstly drops from the bearing frame 51, the previous operation is repeated, and then can be according to the high quick adjustment bearing frame 51 of the height of construction requirement, make the bearing frame 51 lock in the position of construction requirement, make things convenient for the staff to carry out construction operation to the different altitudes of construction building, can effectively improve the efficiency of construction like this.

Example 2: on the basis of embodiment 1, as shown in fig. 5-12, the device further comprises a guide assembly, the guide assembly is arranged on the lower frame 1 and is connected with the upper frame 3, the guide assembly is used for guiding the mold returning frame 5, the guide assembly comprises a mounting plate 81 and six-edge sliding rods 82, two mounting plates 81 are connected to the top of the lower frame 1 and the bottom of the upper frame 3 through bolts, two mounting plates 81 are in a group, two six-edge sliding rods 82 are welded between the mounting plates 81, four six-edge sliding rods 82 are vertically arranged, the six-edge sliding rods 82 are of hollow structures, each six-edge sliding rod 82 is fixedly connected with the lower frame 1 and the upper frame 3, and the mold returning frame 5 is connected with four six-edge sliding rods 82 in a sliding mode.

When the worker pushes the return frame 5 to move upwards or downwards, the six-edge sliding rod 82 guides the return frame 5, so that the return frame 5 cannot incline in the process of moving upwards or downwards, and the return frame 5 is enabled to move upwards or downwards stably and rapidly, so that the worker pushes the return frame 5 to move upwards or downwards more labor-saving, simultaneously, the six sliding sleeves 4 can be kept in a horizontal state, the clamping blocks 72 can be quickly and stably clamped into the clamping grooves 74, the sliding sleeves 4 and the return frame 5 are locked, and the height of the bearing frame 51 can be quickly and stably adjusted.

Example 3: on the basis of embodiment 1, as shown in fig. 2-14, the steel wire winding device further comprises an adjusting component, wherein the upper frame 3 and the lower frame 1 are respectively provided with an adjusting component, the adjusting components are used for adjusting the height of the square frame 5, each adjusting component comprises a transverse shaft 91, a hole column 92, a reel 93 and a steel wire rope 94, the upper frame 3 and the lower frame 1 are respectively connected with two transverse shafts 91 in a rotating mode, the transverse shafts 91 on the upper frame 3 are symmetrically arranged, the transverse shafts 91 on the lower frame 1 are symmetrically arranged, the transverse shafts 91 are horizontally arranged, each transverse shaft 91 is respectively connected with a six-edge sliding rod 82 in a rotating mode, two ends of each transverse shaft 91 are respectively fixedly connected with a hole column 92, each hole column 92 is respectively provided with a vertical hole, each transverse shaft 91 is fixedly connected with two reels 93, each reel 93 passes through a six-edge 82, each reel 93 is fixedly connected with a steel wire rope 94, each reel 93 passes through the other end of the four reel 94, and each steel wire rope 94 passes through the four reel 94 and is fixedly connected with the other end of the four reel 94, and the steel wire rope 94 passes through the square frame 1.

Initially, after the staff pulls the handle 621 and the rack 62 to move, if the height of the bearing frame 51 is required to be adjusted upwards, two L-shaped wrenches can be inserted into the vertical holes of one of the hole columns 92 positioned on the left and right sides of the upper frame 3 by other two staff, then the two L-shaped wrenches are rotated simultaneously, the hole columns 92 and the transverse shafts 91 positioned on the left and right sides of the upper frame 3 are driven to rotate by the rotation of the L-shaped wrenches, the reel 93 is driven to rotate by the rotation of the transverse shafts 91 positioned on the left and right sides of the upper frame 3, the wire ropes 94 positioned on the left and right sides of the upper frame 3 are wound up, the wire ropes 94 positioned on the left and right sides of the upper frame 3 are simultaneously wound up to pull the return frame 5 to move upwards, the wire ropes 94 positioned on the left and right sides of the lower frame 1 are simultaneously wound up, and the wire ropes 94 positioned on the left and right sides of the lower frame 1 are uniformly stressed by the rotation of the L-shaped wrenches, so that the force of the wire ropes 94 pulling the return frame 5 is uniform, and the force of the wire ropes 94 pulling the left and right sides of the upper frame 3 can be pulled up to the upper frame is also pulled up, and the bearing frame 51 can be pulled up stably, and the bearing frame 51 can be pulled up and the bearing frame 51 is further stably when the upper frame is pulled up and is rotated, and the load-stable, and the load is released by the staff is guaranteed to move; if the height of the bearing frame 51 needs to be adjusted downwards, two L-shaped wrenches can be inserted into vertical holes of one of the hole columns 92 positioned on the left side and the right side of the lower frame 1 by other two workers, then the two L-shaped wrenches are rotated simultaneously, the L-shaped wrenches rotate to drive the hole columns 92 positioned on the left side and the right side of the lower frame 1 and the transverse shafts 91 to rotate, the transverse shafts 91 positioned on the left side and the right side of the lower frame 1 rotate to drive the reel 93 to rotate, the reel 93 positioned on the left side and the right side of the lower frame 1 rotates to wind up the steel wire ropes 94 positioned on the left side and the right side of the lower frame 1, the steel wire ropes 94 positioned on the left side and the right side of the lower frame 3 are simultaneously pulled to move downwards, the steel wire ropes 94 positioned on the left side and the right side of the upper frame 3 are simultaneously unreeled, and the force that the steel wire ropes 94 pull the return frame 5 move downwards is uniform because the steel wire ropes 94 positioned on the left side and the right side and the lower frame 1 are uniformly stressed, so that the return frame 5 and the bearing frame 51 can be pulled downwards stably, when the bearing frame 51 moves downwards, the bearing frame 51 is stopped to move downwards, and the bearing frame 51 is adjusted downwards, and the bearing frame 51 is further stably, and the bearing frame 51 is adjusted downwards, and the bearing frame is adjusted to be stable when the height of the load is adjusted.

Example 4: on the basis of embodiment 1, as shown in fig. 2-11, the device further comprises a control mechanism, the control mechanism is arranged on the vertical shaft 2, the control mechanism comprises friction circular plates 101, friction square plates 102 and connecting springs 104, the bottom ends of the vertical shafts 2 positioned on the left side and the right side of the lower frame 1 are connected with the friction circular plates 101 through bolts, each friction circular plate 101 is positioned in the lower frame 1, the friction square plates 102 are connected between the lower parts of the two vertical shafts 2 positioned on the same side of the lower frame 1 in a sliding mode, each friction square plate 102 is positioned in the lower frame 1, the friction square plates 102 are positioned above the friction circular plates 101, openings 103 are formed in the left side and the right side of the lower frame 1, the two openings 103 are symmetrically arranged, the friction square plates 102 penetrate through the openings 103, and two connecting springs 104 are connected between the lower frame 1 and each friction square plate 102 through hooks.

Initially, after the staff pulls the handle 621 and the rack 62 to move, the other two staff simultaneously steps on the friction square plate 102 with feet to move downwards, the connecting spring 104 is stretched, the friction square plate 102 moves downwards to be in contact with the friction circular plate 101 and presses the friction circular plate 101 downwards, so that larger friction force is generated between the friction square plate 102 and the friction circular plate 101, the friction circular plate 101 can be locked, the vertical shaft 2 is further locked, the rotation of the vertical shaft 2 is avoided, the staff can loosen the handle 621, vacate the hand to rotate the hole column 92 positioned on the upper frame 3, the height of the return frame 5 can be quickly adjusted by only a few persons, and the device is more time-saving and labor-saving and is suitable for the scene of construction operation of a few persons; after the height of the return frame 5 is adjusted, the worker releases the friction square plate 102, the connecting spring 104 returns to drive the friction square plate 102 to return upwards, the friction square plate 102 returns upwards to be separated from contact with the friction circular plate 101, and the vertical shaft 2 and the friction circular plate 101 are unlocked.

Example 5: on the basis of embodiment 1, as shown in fig. 8-16, the safety mechanism is further included, the safety mechanism is arranged on the sliding sleeve 4, the safety mechanism comprises a horizontal sliding rod 111, an arc friction plate 112 and a horizontal spring 113, two sliding sleeves 4 positioned in the middle of the square frame 5 are respectively connected with the horizontal sliding rod 111 in a sliding manner, two horizontal sliding rods 111 are respectively contacted with the bearing frame 51, two horizontal sliding rods 111 are respectively connected with the arc friction plate 112 through bolts, the horizontal spring 113 is connected between the sliding sleeve 4 and the arc friction plate 112 through a hook, the horizontal spring 113 is sleeved on the horizontal sliding rod 111, and inclined openings 114 are respectively formed in the left side and the right side of the middle of the bearing frame 51.

The device also comprises a bearing frame 12, wherein the bearing frame 12 is connected to the bottom of the bearing frame 51 through bolts.

When a worker stands on the bearing frame 51, the bearing frame 51 moves downwards under the action of gravity, the two horizontal sliding rods 111 are extruded to move in the direction away from each other by the downward movement of the bearing frame 51, the horizontal sliding rods 111 move to drive the arc friction plates 112 to move, the horizontal springs 113 are stretched, the arc friction plates 112 move to be in contact with the vertical shafts 2 and extrude the vertical shafts 2, friction force between the sliding sleeves 4 and the vertical shafts 2 is increased, the return frame 5 can be locked on the vertical shafts 2 more stably, when the number of people standing on the bearing frame 51 is increased, the force of the bearing frame 51 extruding the horizontal sliding rods 111 is increased, the force of the arc friction plates 112 extruding the vertical shafts 2 is increased, the friction force between the sliding sleeves 4 and the vertical shafts 2 is increased, the return frame 5 is firmly locked on the vertical shafts 2, the bearing frame 51 can support more people, and meanwhile when the bearing frame 51 is provided with people, the arc friction plates 112 can lock the sliding sleeves 4 by themselves, so that workers cannot unlock the return frame 5, and the situation that the workers fall down is avoided due to the error of the bearing frame 51 is avoided; when people no longer stand on the bearing frame 51, the horizontal spring 113 resets to drive the horizontal sliding rod 111 to reset together with the arc friction plate 112, the horizontal sliding rod 111 resets to push the bearing frame 51 to move upwards, and the arc friction plate 112 resets to be separated from contact with the vertical shaft 2.

The load bearing frame 12 will further support the load bearing frame 51 such that the load bearing frame 51 is able to bear a greater weight.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are all within the protection of the present invention.

Claims (7)

1. The scaffold convenient to adjust is characterized by comprising a lower frame (1), vertical shafts (2), an upper frame (3), sliding sleeves (4), a return frame (5), a bearing frame (51), a driving mechanism and a clamping mechanism, wherein six vertical shafts (2) are rotatably connected to the lower frame (1), the upper frame (3) is rotatably connected between the six vertical shafts (2), each vertical shaft (2) is sleeved with the sliding sleeve (4), the return frame (5) is fixedly connected between the six sliding sleeves (4), the bearing frame (51) is slidably connected to the return frame (5), and the driving mechanism is arranged on the upper frame (3), and each sliding sleeve (4) is provided with the clamping mechanism; the driving mechanism comprises a column gear (61), racks (62), handles (621), movable sheets (63), fixing sheets (64) and reset springs (65), wherein each column gear (61) is fixedly connected to the top end of each vertical shaft (2), each column gear (61) is located in an upper frame (3), two racks (62) are connected in the upper frame (3) in a sliding mode, the racks (62) are arranged in a staggered mode, each column gear (61) is meshed with each rack (62), one end of each rack (62) is connected with the handle (621) in a rotating mode, each rack (62) is fixedly connected with two movable sheets (63), four fixing sheets (64) are fixedly connected to the inner wall of the upper frame (3), and reset springs (65) are connected between the movable sheets (63) and the fixing sheets (64).

2. The scaffold convenient to adjust according to claim 1, wherein the clamping mechanism comprises clamping blocks (72) and clamping springs (73), two grooves (71) are formed in the inner side of each sliding sleeve (4), the two grooves (71) located on the same sliding sleeve (4) are symmetrically arranged, the clamping blocks (72) are connected in each groove (71) in a sliding mode, the clamping springs (73) are connected between each clamping block (72) and the sliding sleeve (4), a plurality of clamping grooves (74) are formed in each vertical shaft (2), the two clamping grooves (74) are formed in a group, and the clamping blocks (72) are clamped into one clamping groove (74).

3. The scaffold convenient to adjust according to claim 2, further comprising a guide assembly, wherein the guide assembly is arranged on the lower frame (1) and is connected with the upper frame (3), the guide assembly comprises a mounting plate (81) and six-edge sliding rods (82), two mounting plates (81) are fixedly connected to the top of the lower frame (1) and the bottom of the upper frame (3), two mounting plates (81) are in a group, two six-edge sliding rods (82) are fixedly connected between the two mounting plates (81), the six-edge sliding rods (82) are of hollow structures, each six-edge sliding rod (82) is fixedly connected with the lower frame (1) and the upper frame (3), and the square frame (5) is in sliding connection with four six-edge sliding rods (82).

4. The scaffold convenient to adjust according to claim 3, further comprising an adjusting component, wherein the upper frame (3) and the lower frame (1) are respectively provided with an adjusting component, the adjusting component comprises a cross shaft (91), a hole column (92), a reel (93) and a steel wire rope (94), the upper frame (3) and the lower frame (1) are respectively connected with two cross shafts (91) in a rotating manner, the two cross shafts (91) on the upper frame (3) are symmetrically arranged, the two cross shafts (91) on the lower frame (1) are symmetrically arranged, each cross shaft (91) is respectively connected with a six-edge sliding rod (82) in a rotating manner, two ends of each cross shaft (91) are respectively fixedly connected with a hole column (92), each hole column (92) is respectively provided with a vertical hole, each cross shaft (91) is respectively fixedly connected with two reels (93), each reel (93) passes through the six sliding rods (82), each reel (93) is respectively connected with the steel wire rope (94) in a rotating manner, each reel (94) is respectively connected with the other end of the four steel wire ropes (94) in a rotating manner, four steel wire ropes (94) positioned below pass through the lower frame (1).

5. The scaffold convenient to adjust according to claim 4, further comprising a control mechanism, wherein the control mechanism is arranged on the vertical shaft (2), the control mechanism comprises friction circular plates (101), friction square plates (102) and connecting springs (104), the bottoms of the vertical shafts (2) on the left side and the right side of the lower frame (1) are fixedly connected with the friction circular plates (101), each friction circular plate (101) is arranged in the lower frame (1), friction square plates (102) are connected between the lower parts of the two vertical shafts (2) on the same side of the lower frame (1) in a sliding mode, each friction square plate (102) is arranged in the lower frame (1), the friction square plates (102) are arranged above the friction circular plates (101), openings (103) are formed in the left side and the right side of the lower frame (1), the two openings (103) are symmetrically arranged, the friction square plates (102) penetrate through the openings (103), and the two friction square plates (102) are connected with the two springs (104).

6. The scaffold convenient to adjust according to claim 5, further comprising a safety mechanism, wherein the safety mechanism is arranged on the sliding sleeve (4), the safety mechanism comprises a horizontal sliding rod (111), arc friction plates (112) and horizontal springs (113), the two sliding sleeves (4) arranged in the middle of the mold frame (5) are respectively connected with the horizontal sliding rod (111) in a sliding mode, the two horizontal sliding rods (111) are respectively contacted with the bearing frame (51), the arc friction plates (112) are respectively fixedly connected on the two horizontal sliding rods (111), the horizontal springs (113) are connected between the sliding sleeve (4) and the arc friction plates (112), and inclined openings (114) are respectively formed in the left side and the right side of the middle of the bearing frame (51).

7. The scaffold convenient to adjust according to claim 6, further comprising a bearing frame (12), wherein the bearing frame (12) is fixedly connected to the bottom of the bearing frame (51).

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