CN215854655U - Quick high-efficient safe dull and stereotyped hoist - Google Patents

Abstract

The utility model belongs to the technical field of lifting appliances, solves the technical problem of poor stability of a lifting appliance in the prior art when a flat plate is lifted, and provides a quick, efficient and safe flat plate lifting appliance which comprises a mounting mechanism and a grabbing mechanism; the mounting mechanism comprises a main body frame and a cross beam, the main body frame is rectangular, the cross beam is arranged in the center above the main body frame, a telescopic sleeve is connected between the cross beam and the main body frame, two ends of the cross beam are respectively provided with a hinge frame, two ends of the main body frame are respectively provided with a hinge groove with an upward opening along the width direction, two ends of the hinge groove are respectively communicated, and the hinge groove is positioned under the hinge frame; the grabbing mechanism comprises four chain connecting rods and four grabbing rods, and the four chain connecting rods and the four grabbing rods are respectively arranged in pairs to form four grabbing parts. The quick, efficient and safe flat plate lifting appliance has the advantage of high stability in lifting flat plates.

Description

Quick high-efficient safe dull and stereotyped hoist

Technical Field

The utility model relates to the technical field of lifting appliances, in particular to a quick, efficient and safe flat lifting appliance.

Background

In the production process of the steel plate, a lifting appliance is often used for transferring, the lifting efficiency of the existing flat lifting appliance is not high, the stability is poor when the lifting appliance is hooked, and the plate is easy to unbalance and can be unhooked; meanwhile, the conventional flat plate lifting appliance is limited to a single plate and a thin plate, and the plate is easy to fall off when a plurality of plates are lifted.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a quick, efficient and safe flat plate lifting appliance, which is used for solving the technical problem of poor stability of the lifting appliance when a flat plate is lifted.

The embodiment of the utility model provides a quick, efficient and safe flat plate lifting appliance, which comprises an installation mechanism and a grabbing mechanism, wherein the grabbing mechanism comprises a first lifting arm and a second lifting arm;

the mounting mechanism comprises a main body frame and a cross beam, the main body frame is rectangular, the cross beam is arranged in the center above the main body frame, a telescopic sleeve is connected between the cross beam and the main body frame, two ends of the cross beam are respectively provided with a hinge frame, two ends of the main body frame are respectively provided with a hinge groove with an upward opening along the width direction, two ends of the hinge groove are respectively communicated, and the hinge groove is positioned under the hinge frame;

the grabbing mechanism comprises four chain connecting rods and four grabbing rods, the four chain connecting rods and the four grabbing rods form four grabbing parts in a group in a pairwise mode, each grabbing part comprises one chain connecting rod and one grabbing rod, each grabbing part is a group and is symmetrically arranged in one hinge groove, one end of each chain connecting rod is hinged to the corresponding hinge frame, the other end of each chain connecting rod is hinged to the corresponding grabbing rod, the other end of each grabbing rod is hinged to the side wall of the through position of the corresponding hinge groove, the grabbing rods are of an L-shaped structure, and the bending positions of the grabbing rods are bent downwards.

The working principle and the process are as follows:

when a steel plate is grabbed, the cross beam drives the chain connecting rod to lift upwards through the hinge frame, after the grabbing rods positioned in the same hinge groove are stressed, the bent sections of the grabbing rods tightly grab the edge of the steel plate, the pulling force gradually increases along with the rising of the cross beam, and the relative distance between the two grabbing rods in the same hinge groove is gradually reduced, so that the two groups of grabbing rods firmly grab the steel plate to safely hoist the steel plate, and the telescopic sleeve plays a role in stably connecting the main body frame and the cross beam;

when the steel plate is put down, the cross beam drives the link rod to move downwards, and the relative distance between the two groups of grabbing mechanisms is gradually increased to loosen the steel plate.

Furthermore, the telescopic sleeve comprises a first sleeve, two second sleeves, a first loop bar and two second loop bars, wherein the first sleeve and the two second loop bars correspond to each other; the lower end of the hinge frame is provided with a second sleeve rod, the central position of the hinge groove is provided with a second sleeve, and the second sleeve rod is arranged in the second sleeve in a sliding mode.

First loop bar and the cooperation of first sleeve pipe play the direction and provide the effect of holding power, and the cooperation of second sleeve pipe and second loop bar plays the effect that main part frame both ends supported, plays the firm effect of hoist simultaneously.

Furthermore, a plurality of clamping teeth are arranged on the inner surface of the bent part of the grabbing rod.

The chucking tooth has increased the frictional force who snatchs the pole, prevents that the pine from taking off the phenomenon, and the handling is more firm.

Furthermore, locking mechanisms used for locking the cross beam and not moving up and down are arranged in the first loop bar and the first sleeve.

The locking mechanism can lock the grabbing mechanism, prevents the cross beam from moving up and down, does not need extra power supply, reduces the use cost, is of a pure mechanical structure, and is low in failure rate and low in maintenance cost.

Furthermore, the first sleeve rod is hollow and is communicated with one end far away from the cross beam, the locking mechanism comprises a trigger rod and a hook, a horizontally arranged guide plate is arranged on the inner side wall of the first sleeve rod, a guide hole is vertically formed in the guide plate, the trigger rod is slidably arranged in the guide hole, a fixed rod is arranged on the inner side wall of the first sleeve rod and is arranged in parallel with the guide plate, a trigger wheel, a cam and a positioning wheel which are coaxially connected into a whole are rotatably arranged on the fixed rod, a positioning fastener for positioning the positioning wheel is arranged on one side of the positioning wheel, a clamping block for driving the trigger wheel to rotate is arranged on the side face, close to the trigger wheel, of the trigger rod, the clamping block is abutted against the trigger wheel, the connecting end of the hook is hinged on the inner side wall of the first sleeve rod, and the free end of the hook is abutted against the inner wall of the first sleeve barrel after the hook rotates to the maximum swing position, the cam is abutted to the hook in the horizontal state, and a hook strip is formed on the inner wall of the first sleeve.

When the locking mechanism moves in the operation process, the cross beam moves upwards for a certain distance firstly when moving for the first time, then the trigger rod returns to the position and then moves downwards, when the trigger rod is jacked upwards along the guide hole, the clamping block drives the trigger wheel to rotate for 90 degrees, and simultaneously the cam also rotates for 90 degrees (horizontally) and jacks the hook to open outwards, at the moment, the hook can be hooked to the hooking strip on the inner wall of the first sleeve, the integral hanging bracket is hung, and the trigger rod returns when being hung; meanwhile, the locking cross beam can not move up and down by utilizing gravity and a cam mechanism, the lifting appliance can be integrally lifted to be separated from the steel plate, and the positioning wheel and the positioning clamping piece can realize accurate positioning of the cam position;

when the cross beam moves downwards for the second time, and the trigger rod is jacked upwards again, the trigger wheel is driven to rotate for 90 degrees, and the hook is retracted inwards when the cam also rotates for 90 degrees (is erected), and the hook cannot be hooked on the hooking strip on the inner wall of the first sleeve, so that the upper part of the hanger frame rises to drive the grabbing rod to grab the plate, and the trigger rod returns when the hanger is hoisted; when the beam moves again, the beam returns to the first downward movement state; a locking and unlocking cycle is realized through the first and second up-and-down movements of the cross beam.

Furthermore, four arc grooves are formed in the circumferential side face of the positioning wheel, the four arc grooves are distributed in an array mode relative to the axis circumference of the positioning wheel, the positioning fastener comprises a positioning rod vertically arranged on a guide plate, the positioning rod is T-shaped and is connected with the guide plate in a sliding mode, the positioning rod is arranged above the positioning wheel, the lower end of the positioning rod is spherical, and the lower end of the positioning rod is abutted to the arc grooves in the positioning wheel.

The locating rod and the arc-shaped groove are arranged, so that the cam can rotate at every time and is located in a vertical state or a horizontal state, and the condition of inaccurate state can not occur.

Further, the fixture block is the right triangle structure, and its inclined plane orientation triggers the wheel and be the arcwall face, the initial condition of cam is vertical state, it is the dart form in four corners to trigger the wheel, the four corners sideline that triggers the wheel is the arc sideline.

The dart-shaped structure in the four corners of the trigger wheel and the inclined plane of the clamping block are arranged on the arc-shaped surface, so that the clamping block can move downwards, and the clamping block cannot be clamped when moving upwards.

Further, be equipped with height adjusting mechanism on the main part frame, height adjusting mechanism sets up the both ends at the main part frame, height adjusting mechanism includes the solid fixed cylinder of vertical setting and the bracing piece of slip setting in solid fixed cylinder, be equipped with spacing draw runner and spacing spout on the bracing piece outer wall and the solid fixed cylinder inner wall respectively, spacing draw runner and spacing spout cooperate, the lower extreme of solid fixed cylinder link up, gu the fixed cylinder top is rotated and is equipped with the rotation handle, it is connected with the screw lead screw to rotate the handle lower extreme, the screw lead screw sets up in solid fixed cylinder, threaded connection is passed through with the top of bracing piece to the lower extreme of screw lead screw.

When the lifting appliance device is used for lifting steel plates, the threaded screw rod can be driven to rotate through rotating the handle, so that the supporting rod is adjusted to slide up and down in the fixed cylinder, the vertical distance between the bottom end of the supporting rod and the bottom end of the grabbing rod is changed, and the tip of the grabbing rod is grabbed to adjust the number of the steel plates.

Furthermore, the height adjusting mechanisms are four in number and are respectively arranged at four corner positions of the main body frame.

Through the arrangement of the height adjusting mechanisms at the four corner positions, the thickness of the device can be adjusted more accurately.

In conclusion, the beneficial effects of the utility model are as follows:

the steel plate clamping device drives the clamping mechanism to clamp and place the steel plate through the up-and-down movement of the cross beam, realizes the fastening clamping of the steel plate through the self gravity and the lifting force of the steel plate, has high operation stability, can automatically and mechanically lock, ensures the lifting safety, and has simple structure and convenient use.

Drawings

Fig. 1 is a schematic perspective view of a spreader according to the present invention;

FIG. 2 is a front cross-sectional view of the overall construction of the present invention;

FIG. 3 is a side view of the overall structure of the present invention;

FIG. 4 is a front view of the locking mechanism of the present invention;

fig. 5 is a schematic perspective view of the locking mechanism of the present invention.

In the figure: 1. an installation mechanism; 11. a main body frame; 111. a hinge slot; 12. a cross beam; 13. a telescopic sleeve; 131. a first sleeve; 132. a first loop bar; 133. a second sleeve; 134. a second loop bar; 14. a hinged frame; 2. a grabbing mechanism; 21. a chain link rod; 22. a grabbing rod; 3. a height adjustment mechanism; 31. a fixed cylinder; 32. a support bar; 33. rotating the handle; 34. a threaded lead screw; 4. a locking mechanism; 41. a guide plate; 42. a trigger lever; 43. a clamping block; 44. positioning a rod; 45. hooking; 46. positioning wheels; 47. a cam; 48. fixing the rod; 49. the wheel is triggered.

Detailed Description

Example 1:

as shown in fig. 1-5, a quick, efficient and safe plate sling comprises a mounting mechanism 1 and a grabbing mechanism 2;

the mounting mechanism 1 comprises a main body frame 11 and a cross beam 12, wherein the main body frame 11 is rectangular, the cross beam 12 is arranged at the central position above the main body frame 11, a telescopic sleeve 13 is connected between the cross beam 12 and the main body frame 11, two ends of the cross beam 12 are respectively provided with a hinge frame 14, two ends of the main body frame 11 are respectively provided with a hinge groove 111 with an upward opening along the width direction, two ends of the hinge groove 111 are respectively communicated, and the hinge groove 111 is positioned right below the hinge frame;

the grabbing mechanism 2 comprises four chain connecting rods 21 and four grabbing rods 22, the four chain connecting rods 21 and the four grabbing rods 22 form four grabbing parts in a group in pairs respectively, each grabbing part comprises one chain connecting rod 21 and one grabbing rod 22, each two grabbing parts are arranged in one hinge groove 111 in a group and are symmetrically arranged in one group respectively, one end of each chain connecting rod 21 is hinged to the corresponding hinge frame 14, the other end of each chain connecting rod 21 is hinged to the corresponding grabbing rod 22, the other end of each grabbing rod 22 is hinged to the side wall of the through position of the corresponding hinge groove 111, each grabbing rod 22 is of an L-shaped structure, and the bending position of each grabbing rod 22 is bent downwards.

The telescopic sleeve 13 comprises a first sleeve 131, two second sleeves 133, and a first sleeve rod 132 and two second sleeve rods 134 corresponding to the first sleeve rod 133, a mounting frame is arranged at the center of the main body frame 11, the first sleeve 131 is vertically arranged on the mounting frame, the first sleeve rod 132 is arranged at the lower end of the center of the cross beam 12, and the first sleeve rod 132 is slidably arranged in the first sleeve 131; the lower end of the hinge frame 14 is provided with a second sleeve 134, the center of the hinge groove 111 is provided with a second sleeve 133, and the second sleeve 134 is slidably disposed in the second sleeve 133.

The first sleeve 132 and the first sleeve 131 cooperate to provide guiding and supporting force, and the second sleeve 133 and the second sleeve 134 cooperate to support two ends of the main body frame 11 and stabilize the spreader.

The inner surface of the bent part of the grabbing rod 22 is provided with a plurality of clamping teeth.

The clamping teeth increase the friction force of the grabbing rod 22, the steel plate is prevented from being loosened, and the lifting is more stable.

The locking mechanism 4 for locking the cross beam 12 against up-and-down movement is provided in the first sleeve 132 and the first sleeve 131. The first sleeve 132 and the first sleeve 131 are both rectangular parallelepiped structures.

The first loop bar 132 is hollow and is communicated with one end far away from the cross beam 12, the locking mechanism 4 comprises a trigger bar 42 and a hook 45, a guide plate 41 horizontally arranged is arranged on the side wall of the first loop bar 132, a guide hole is vertically arranged on the guide plate 41, the trigger bar 42 is slidably arranged in the guide hole, a fixing bar 48 is arranged on the inner side wall of the first loop bar 132, the fixing bar 48 is arranged in parallel with the guide plate 41, a trigger wheel 49, a cam 47 and a positioning wheel 46 which are coaxially connected into a whole are rotatably arranged on the fixing bar 48, a positioning fastener for positioning the positioning wheel 46 is arranged on one side of the positioning wheel 46, a clamping block 43 for driving the trigger wheel 49 to rotate is arranged on the side surface of the trigger bar 42 close to the trigger wheel 49, the clamping block 43 is abutted against the trigger wheel 49, the connecting end of the hook 45 is hinged on the side wall of the first loop bar 132, after the hook 45 rotates to the maximum swing position, the free end of the hook is abutted against the inner wall of the first loop tube 131, the cam 47 is in a horizontal state and is abutted against the hook 45, and a hook strip is formed on the inner wall of the first sleeve 131.

Four arc grooves are formed in the circumferential side face of the positioning wheel 46, the four arc grooves are distributed relative to the axis circumferential array of the positioning wheel 46, the positioning clamping piece comprises a positioning rod 44 vertically arranged on the guide plate, the positioning rod 44 is T-shaped, the positioning rod 44 is connected with the guide plate in a sliding mode, the positioning rod 44 is arranged above the positioning wheel 46, the lower end of the positioning rod 44 is spherical, and the lower end of the positioning rod 44 is abutted to the arc grooves in the positioning wheel 46.

The arrangement of the positioning rod 44 and the arc-shaped groove enables the cam 47 to be in a vertical state or a horizontal state every time the cam rotates, and the situation that the states are inaccurate is avoided.

The fixture block 43 is in a right-angled triangle structure, the inclined surface faces the trigger wheel 49 and is an arc-shaped surface, the initial state of the cam 47 is vertical, the trigger wheel 49 is in a four-corner dart shape, and the four corner sidelines of the trigger wheel 49 are all arc sidelines.

The dart-shaped structure of the four corners of the trigger wheel 49 and the inclined plane of the fixture block are arranged in an arc-shaped surface, so that the fixture block can move downwards, and the phenomenon of clamping can not occur when the fixture block moves upwards.

The working principle and the process are as follows:

when a steel plate is grabbed, the cross beam 12 drives the chain connecting rods 21 to lift upwards through the hinge frame 14, after the grabbing rods 22 positioned in the same hinge groove 111 are stressed, the edge of the steel plate is grabbed by the bent section of the cross beam, the pulling force is gradually increased along with the rising of the cross beam 12, the relative distance between the two grabbing rods 22 in the same hinge groove 111 is gradually reduced, so that the two groups of grabbing rods 22 firmly grab the steel plate to safely lift the steel plate, and the telescopic sleeve 13 plays a role in stably connecting the main body frame 11 and the cross beam 12;

when the steel plate is put down, the beam 12 drives the chain connecting rod 21 to move downwards, and the relative distance between the two groups of grabbing mechanisms 2 gradually increases to loosen the steel plate.

In the operation process of the locking mechanism 4, when the cross beam 12 moves for the first time, the cross beam moves upwards for a certain distance, then the trigger rod 42 returns to the original position and then moves downwards, when the trigger rod 42 is jacked upwards along the guide hole, the fixture block 43 drives the trigger wheel 49 to rotate for 90 degrees, and simultaneously the cam 47 also rotates for 90 degrees (horizontally) and jacks the hook 45 to open outwards, at the moment, the hook 45 can hook the hook strip on the inner wall of the first sleeve 131, the hoisting of the whole hoisting frame is realized, and the trigger rod 42 returns when being hoisted; meanwhile, the locking beam 12 is not moved up and down any more by utilizing gravity and a cam 47 mechanism, the lifting appliance can be integrally lifted to be separated from the steel plate, and the positioning wheel 46 and the positioning clamping piece realize accurate positioning of the cam position;

when the cross beam 12 moves downwards for the second time and the trigger rod 42 is jacked upwards again, the trigger wheel 49 is driven to rotate by 90 degrees, and the hook 45 is retracted inwards when the cam 47 also rotates by 90 degrees (is jacked up), at the moment, the hook 45 cannot hook a hooking strip on the inner wall of the first sleeve 131, so that the upper part of the hanger frame rises to drive the grabbing rod 22 to grab a plate, and the trigger rod 42 returns when lifted; the beam 12 returns to the first downward movement when it moves again; a locking and unlocking cycle is achieved by a first and second up and down movement of the cross member 12. Locking mechanism 4's setting can lock and snatch mechanism 2, prevents that crossbeam 12 from reciprocating, need not extra power supply, reduces use cost, pure mechanical structure, and the fault rate is low, and the maintenance cost is low.

Example 2:

as shown in fig. 1 to 3, in this embodiment, on the basis of embodiment 1, a height adjusting mechanism 3 is arranged on a main body frame 11, the height adjusting mechanism 3 is arranged at two ends of the main body frame 11, the height adjusting mechanism 3 includes a fixed cylinder 31 vertically arranged and a support rod 32 slidably arranged in the fixed cylinder 31, a limit slider and a limit chute are respectively arranged on an outer wall of the support rod 32 and an inner wall of the fixed cylinder 31, the limit slider and the limit chute are matched, a lower end of the fixed cylinder 31 is through, a rotating handle 33 is rotatably arranged at the top of the fixed cylinder 31, a threaded lead screw 34 is connected to a lower end of the rotating handle 33, the threaded lead screw 34 is arranged in the fixed cylinder 31, and a lower end of the threaded lead screw 34 is connected to a top end of the support rod 32 through a thread.

When the lifting appliance device is used for lifting steel plates, the threaded screw rod 34 can be driven to rotate by rotating the handle 33, so that the supporting rod 32 is adjusted to slide up and down in the fixed cylinder 31, the vertical distance between the bottom end of the supporting rod 32 and the bottom end of the grabbing rod 22 is changed, and the number of the steel plates grabbed by the tip end of the grabbing rod 22 is adjusted. When the vertical distance is larger than the thickness of the two steel plates, the two steel plates can be grabbed, and when the vertical distance is smaller than the thickness of the two steel plates, grabbing of one steel plate is realized, so that the grabbing quantity of the steel plates is adjusted.

The height adjusting mechanisms 3 are four in number and are respectively arranged at four corner positions of the main body frame 11.

Through the setting of four corner position height adjustment mechanism 3 for device thickness adjustment is more accurate.

Embodiment 2 the rest of the structure and the operation principle are the same as those of embodiment 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A quick, efficient and safe flat plate lifting appliance is characterized by comprising an installation mechanism and a grabbing mechanism;

the mounting mechanism comprises a main body frame and a cross beam, the main body frame is rectangular, the cross beam is arranged in the center above the main body frame, a telescopic sleeve is connected between the cross beam and the main body frame, two ends of the cross beam are respectively provided with a hinge frame, two ends of the main body frame are respectively provided with a hinge groove with an upward opening along the width direction, two ends of the hinge groove are respectively communicated, and the hinge groove is positioned under the hinge frame;

the grabbing mechanism comprises four chain connecting rods and four grabbing rods, the four chain connecting rods and the four grabbing rods form four grabbing parts in a group in a pairwise mode, each grabbing part comprises one chain connecting rod and one grabbing rod, each grabbing part is a group and is symmetrically arranged in one hinge groove, one end of each chain connecting rod is hinged to the corresponding hinge frame, the other end of each chain connecting rod is hinged to the corresponding grabbing rod, the other end of each grabbing rod is hinged to the side wall of the through position of the corresponding hinge groove, the grabbing rods are of an L-shaped structure, and the bending positions of the grabbing rods are bent downwards.

2. The quick, efficient and safe flat plate lifting appliance according to claim 1, wherein the telescopic sleeves comprise a first sleeve, two second sleeves and corresponding first loop bars and two second loop bars, a mounting frame is arranged in the center of the main body frame, the first sleeve is vertically arranged on the mounting frame, the first loop bars are arranged at the lower ends of the center of the cross beams, and the first loop bars are slidably arranged in the first sleeves; the lower end of the hinge frame is provided with a second sleeve rod, the central position of the hinge groove is provided with a second sleeve, and the second sleeve rod is arranged in the second sleeve in a sliding mode.

3. The fast, efficient and safe flat plate hanger according to claim 1, wherein the inner surface of the bent part of the grabbing rod is provided with a plurality of clamping teeth.

4. The fast, efficient and safe flat plate hanger according to claim 2, wherein locking mechanisms for locking the cross beam not to move up and down are arranged in the first loop bar and the first sleeve.

5. The fast, efficient and safe flat plate hanger according to claim 4, wherein the first sleeve is hollow and has a through end far from the cross beam, the locking mechanism comprises a trigger bar and a hook, a horizontally arranged guide plate is arranged on the inner side wall of the first sleeve, a guide hole is vertically arranged on the guide plate, the trigger bar is slidably arranged in the guide hole, a fixed bar is arranged on the inner side wall of the first sleeve, the fixed bar is arranged in parallel with the guide plate, a trigger wheel, a cam and a positioning wheel which are coaxially connected into a whole are rotatably arranged on the fixed bar, a positioning fastener for positioning the positioning wheel is arranged on one side of the positioning wheel, a fixture block for driving the trigger wheel to rotate is arranged on the side of the trigger bar close to the trigger wheel, the fixture block is abutted against the trigger wheel, and the connecting end of the hook is hinged on the inner side wall of the first sleeve, after the hook rotates to the maximum swing position, the free end of the hook is abutted to the inner wall of the first sleeve, the cam is abutted to the hook in the horizontal state, and a hook hanging strip is formed on the inner wall of the first sleeve.

6. The quick, efficient and safe flat plate hanger according to claim 5, wherein four arc-shaped grooves are formed in the circumferential side surface of the positioning wheel, the four arc-shaped grooves are distributed in a circumferential array relative to the axis of the positioning wheel, the positioning fastener comprises a positioning rod vertically arranged on a guide plate, the positioning rod is T-shaped, the positioning rod is slidably connected with the guide plate, the positioning rod is arranged above the positioning wheel, the lower end of the positioning rod is spherical, and the lower end of the positioning rod is abutted to the arc-shaped grooves in the positioning wheel.

7. The fast, efficient and safe flat plate hanger according to claim 6, wherein the fixture block is in a right triangle structure, an inclined surface of the fixture block faces the trigger wheel and is an arc surface, an initial state of the cam is a vertical state, the trigger wheel is in a four-corner dart shape, and four corner sidelines of the trigger wheel are all arc sidelines.

8. The quick, efficient and safe flat plate lifting appliance according to claim 1, wherein the main body frame is provided with a height adjusting mechanism, the height adjusting mechanism is arranged at two ends of the main body frame, the height adjusting mechanism comprises a vertically arranged fixed cylinder and a support rod slidably arranged in the fixed cylinder, a limiting slide bar and a limiting slide groove are respectively arranged on the outer wall of the support rod and the inner wall of the fixed cylinder, the limiting slide bar is matched with the limiting slide groove, the lower end of the fixed cylinder is communicated, the top of the fixed cylinder is rotatably provided with a rotating handle, the lower end of the rotating handle is connected with a threaded lead screw, the threaded lead screw is arranged in the fixed cylinder, and the lower end of the threaded lead screw is in threaded connection with the top end of the support rod.

9. The fast, efficient and safe flat plate hanger according to claim 8, wherein the number of the height adjusting mechanisms is four, and the height adjusting mechanisms are respectively arranged at four corner positions of the main body frame.

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