CN220245295U - A balanced hoist that is used for automatic longeron of new energy automobile back to compress tightly - Google Patents

Abstract

The utility model discloses a balance lifting appliance for automatically compacting a rear longitudinal beam of a new energy automobile, which comprises a supporting structure arranged on the ground, wherein an XY translation guide rail is arranged below the supporting structure, a pneumatic balance hoist is hung below the XY translation guide rail, a lifting appliance device is hung below the pneumatic balance hoist, and a workpiece is arranged on the lifting appliance device. The utility model is used for improving the production efficiency of the rear longitudinal beam of the new energy automobile, reducing the labor intensity of workers and guaranteeing the operation safety of the workers.

Description

A balanced hoist that is used for automatic longeron of new energy automobile back to compress tightly

Technical Field

The utility model relates to the technical field of new energy automobile manufacturing, in particular to a balance lifting appliance for automatically compacting a rear longitudinal beam of a new energy automobile.

Background

With the development of the welding production line of new energy automobiles, the transfer of automobile body workpieces from stations to each other is a step, and in the production process of the rear longitudinal beam, the rear longitudinal beam is conveyed to a special skip car, so that the rear longitudinal beam needs to be manually conveyed by workers. Because the finished product of the rear longitudinal beam of the new energy automobile has large volume and heavy weight, the manual bare-handed transportation can increase the load of workers, and a special lifting appliance is needed to assist the workers to complete the step, so that the labor intensity of the workers is reduced.

Whereas the conventional rear girder sling has the following disadvantages: 1. the lifting appliance has a complex structure and high maintenance cost; 2. the operation process is complicated, the positioning accuracy is poor, the worker is required to correct the position for many times, and the production beat of the product is affected; 3. the traditional lifting appliance is very heavy, and the labor intensity of workers is high; 4. the traditional lifting appliance has larger volume and is inconvenient to store for factories with limited space.

How to solve the problems is a technical problem to be solved.

Disclosure of Invention

The utility model aims to provide a balance lifting appliance for automatically compacting a rear longitudinal beam of a new energy automobile, which is used for improving the production efficiency of the rear longitudinal beam of the new energy automobile, reducing the labor intensity of workers and guaranteeing the operation safety of the workers.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a balance lifting appliance for automatically compacting a rear longitudinal beam of a new energy automobile, which comprises a supporting structure arranged on the ground, wherein an XY translation guide rail is arranged below the supporting structure, a pneumatic balance hoist is hung below the XY translation guide rail, a lifting appliance device is hung below the pneumatic balance hoist, and a workpiece is arranged on the lifting appliance device; the lifting appliance device comprises a gravity center adjusting lifting ring, an operating handle, a balance pressing block, a hinge pin, a workpiece hook, a central shaft, a pneumatic balance hoist control handle, a spring, a connecting plate, a guide shaft, a tension spring, a guide sleeve, a hook unlocking handle, an adjusting connecting rod and a safety lifting ring;

the upper part of the gravity center adjusting lifting ring is hung on the pneumatic balance hoist, the lower part of the gravity center adjusting lifting ring is fixed on the adjusting connecting rod, the lower part of the adjusting connecting rod is connected with the connecting plate, one side of the connecting plate is connected with the operating handle, and the operating handle is used for being held by the left hand of a worker; the balance pressing block is arranged below the connecting plate through the hinge pin, and rotates around the connecting plate through the hinge pin.

Further, the work piece couple with the center pin is located the connecting plate bottom, thereby the work piece couple is used for hooking the work piece inner chamber drives the work piece and moves together, the center pin be used for with thereby prevent with the hole cooperation of work piece the horizontal oscillation of work piece, pneumatic balance hoist control handle fixed mounting just pneumatic balance hoist control handle is used for the workman right hand to hold on the connecting plate, the spring is located the inside of connecting plate, the uide bushing is located the inside of connecting plate, the guiding axle is located the inside of uide bushing, the guiding axle with the uide bushing mutually support and the guiding axle is used for reciprocate in the uide bushing, the one end of couple unblock handle is close to operating handle, the other end of couple unblock handle stretches into inside the connecting plate and with the guiding axle is connected, the extension spring with couple unblock handle is connected.

Further, the center of gravity is adjusted rings below and is pressed from both sides tightly fixed through the screw on the adjustment connecting rod, both sides all pass through about the connecting plate below the hinge pin respectively is equipped with one balance briquetting, be provided with operating button on the pneumatic balance hoist control handle, safe rings are installed on the adjustment connecting rod, safe rings are connected with the safety rope of workshop production scene just safe rings are used for the anti-falling protection of hoist device during operation.

Further, the XY translation guide rail comprises a first layer of guide rail, a second layer of guide rail, a guide rail lifting lug, a first steel wire rope, a first spiral air pipe, a second steel wire rope, a first guide rail trolley and a second guide rail trolley;

the two guide rails of the one layer are arranged in parallel, the two guide rail lifting lugs are arranged on the two sides of each guide rail of the one layer, and each guide rail of the one layer is suspended below the supporting structure through the guide rail lifting lugs; the second guide rail trolley is arranged below the two-layer guide rail, the pneumatic balance hoist is hung below the second guide rail trolley, the second guide rail trolley is used for moving along the Y direction of the two-layer guide rail in the use state so as to drive the pneumatic balance hoist to move along the Y direction of the two-layer guide rail, the lifting device is further driven to move along the Y direction of the two-layer guide rail, the two-layer guide rail is hung below each one-layer guide rail through the first guide rail trolley, the two-layer guide rail is vertical to the two one-layer guide rails, the first guide rail trolley is used for moving along the X direction of the one-layer guide rail in the use state, the two layers of guide rails are driven to move along the X direction of the first layer of guide rails, so that the second guide rail trolley is driven to move along the X direction of the first layer of guide rails, the lifting device is further driven to move along the X direction of the first layer of guide rails, the first steel wire rope and the second steel wire rope are arranged below the first layer of guide rails and the second layer of guide rails, the first spiral air pipe is arranged on the first steel wire rope, the second spiral air pipe is arranged on the second steel wire rope, and the first spiral air pipe and the second spiral air pipe are used for providing compressed air for the pneumatic balance hoist.

Further, the supporting structure comprises a ground upright post, a first layer of cross beam, a second layer of cross beam, a horizontal adjusting structure, a guide rail hanging ring and a safety stop lever which are arranged on the ground;

the ground upright posts are four, two cross beams are arranged on one layer, and the cross beams on one layer are arranged above the upright posts; the utility model discloses a floor's crossbeam, including floor's stand, two-layer crossbeam overlap joint are in one deck crossbeam top, one deck crossbeam with two-layer crossbeam constitutes the well word structure, the level adjustment structure is installed ground stand below just the level adjustment structure is used for adjusting ground stand's height, two-layer crossbeam's both sides all are provided with guide rail rings, guide rail rings are used for connecting the guide rail lug, the safety pin is installed ground stand's lower part, the safety pin is used for preventing that the floor dolly of adjacent station from getting into inside the bearing structure prevents to take place the incident.

Further, the pneumatic balance hoist comprises a hoist hook, a hoist body, a hoist hook, a steel wire rope and a safety tongue;

the lifting appliance hook is used for hanging the gravity center adjusting lifting ring, the steel wire rope is arranged above the lifting appliance hook, and the lifting appliance hook is used for pulling the lifting appliance device to ascend or descend; the hoist couple is hung on the second guide rail trolley, the hoist body is located hoist couple with between the hoist couple, the safety tongue is installed on the hoist couple just the safety tongue is used for preventing that hoist device from breaking away from on the hoist couple.

Due to the adoption of the structure, the utility model has the following beneficial effects:

the utility model relates to a balance lifting appliance for automatically compacting a rear longitudinal beam of a new energy automobile, which can greatly reduce the labor intensity of workers, reduce the operation time of the workers and improve the production efficiency.

The workpiece is kept in a stable and balanced posture all the time in the carrying process, so that the operation safety of workers is improved, and the workpiece is prevented from being damaged due to falling of the workpiece.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the construction of the spreader apparatus of the present utility model;

FIG. 3 is a schematic view of the structure of the XY translation rail according to the present utility model;

FIG. 4 is a schematic view of a support structure according to the present utility model;

FIG. 5 is a schematic diagram of the pneumatic balancing hoist according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-5, the balance sling for automatically compacting a rear longitudinal beam of a new energy automobile provided by the utility model comprises a supporting structure 300 arranged on the ground, wherein an XY translation guide rail 200 is arranged below the supporting structure 300, a pneumatic balance hoist 400 is hung below the XY translation guide rail 200, a sling device 100 is hung below the pneumatic balance hoist 400, and a workpiece 500 is arranged on the sling device 100; the lifting appliance device 100 comprises a gravity center adjusting lifting ring 101, an operating handle 102, a balance pressing block 103, a hinge pin 104, a workpiece hook 105, a central shaft 106, a pneumatic balance hoist control handle 107, a spring 108, a connecting plate 109, a guide shaft 110, a tension spring 111, a guide sleeve 112, a hook unlocking handle 113, an adjusting connecting rod 114 and a safety lifting ring 115;

the upper part of the gravity center adjusting lifting ring 101 is hung on the pneumatic balance hoist 400, the lower part of the gravity center adjusting lifting ring 101 is fixed on the adjusting connecting rod 114, the lower part of the adjusting connecting rod 114 is connected with the connecting plate 109, one side of the connecting plate 109 is connected with the operating handle 102, and the operating handle 102 is used for being held by the left hand of a worker; the balancing weight 103 is arranged below the connecting plate 109 by the hinge pin 104, and the balancing weight 103 is rotated around the connecting plate 109 by the hinge pin 104 until the workpiece 500 is finally pressed.

Preferably, the workpiece hook 105 and the central shaft 106 are located at the bottom of the connecting plate 109, the workpiece hook 105 is used for hooking the inner cavity of the workpiece 500 so as to drive the workpiece 500 to move together, when the lifting device 100 is inserted into the workpiece 500, the workpiece hook 105 is turned inwards under the blocking of the workpiece 500, when the workpiece enters the inner cavity of the workpiece 500, the workpiece hook 105 is automatically opened under the action of the tension spring 111, so that the inner wall of the workpiece 500 is hooked by the workpiece hook 105, the central shaft 106 is used for being matched with a hole of the workpiece 500 so as to prevent the horizontal swing of the workpiece 500, the pneumatic balance hoist control handle 107 is fixedly installed on the connecting plate 109 and the pneumatic balance hoist control handle 107 is used for being held by a right hand of a worker, the spring 108 is located inside the connecting plate 109, the guide sleeve 112 is located inside the connecting plate 109, the guide shaft 110 is located inside the guide sleeve 112, the guide shaft 110 and the guide sleeve 112 are mutually matched, the guide shaft 110 is used for moving up and down in the guide sleeve 112, one end of the hook 105 is hooked by the tension spring 113, the hook release handle 113 is close to the guide shaft 113, and the hook 113 is reset by the operator, and the hook 110 is connected with the guide shaft 113 when the hook 105 is opened, and the hook 105 is released, and the hook 105 is unlocked, and the hook 105 is connected by the hook 110 is reset when the hook is opened.

Preferably, the lower part of the gravity center adjusting lifting ring 101 is clamped and fixed on the adjusting connecting rod 114 through a screw, the overall horizontal state of the lifting appliance device 100 is controlled by adjusting the left and right positions of the gravity center adjusting lifting ring 101 on the adjusting connecting rod 114, the left and right sides of the lower part of the connecting plate 109 are respectively provided with one balance pressing block 103 through the hinge pin 104, the pneumatic balance hoist control handle 107 is provided with an operation button, an ascending button and a descending button are arranged, and a worker can control the ascending and descending of the pneumatic balance hoist 400 through the operation button; the spring 108 and the workpiece 500 are balanced by gravity, so that the workpiece 500 is stable. Under the action of gravity of the workpiece 500 and spring force of the spring 108, the guide shaft 110 moves up and down in the guide sleeve 112, when no workpiece 500 exists, the guide shaft 110 moves up and down under the action of the spring 108, so that the balance pressing block 103 is driven to be opened, the compression state of the workpiece 500 is relieved, the safety hanging ring 115 is installed on the adjusting connecting rod 114, the safety hanging ring 115 is connected with a safety rope of a workshop production site, and the safety hanging ring 115 is used for anti-falling protection when the lifting device 100 works.

Preferably, the XY translation guide rail 200 includes a first layer of guide rail 201, a second layer of guide rail 202, a guide rail lifting lug 203, a first steel wire rope 204, a first spiral air pipe 205, a second spiral air pipe 206, a second steel wire rope 207, a first guide rail trolley 208 and a second guide rail trolley 209;

the two guide rails 201 on one layer are arranged in parallel, the two guide rail lifting lugs 203 are arranged on two sides of each guide rail 201 on one layer, and each guide rail 201 on one layer is suspended below the supporting structure 300 through the guide rail lifting lugs 203; the second rail trolley 209 is arranged below the two-layer rail 202, the pneumatic balance hoist 400 is suspended below the second rail trolley 209, the second rail trolley 209 is used for moving along the Y direction of the two-layer rail 202 when in use, so as to drive the pneumatic balance hoist 400 to move along the Y direction of the two-layer rail 202, and further drive the lifting device 100 to move along the Y direction of the two-layer rail 202, the two-layer rail 202 is suspended below each one-layer rail 201 through the first rail trolley 208, the two-layer rail 202 and the two one-layer rails 201 are in a vertical state, the first rail trolley 208 is used for moving along the X direction of the one-layer rail 201 when in use, thereby drive the two-layer guide rail 202 along the X direction of one deck guide rail 201 removes and then drives second guide rail dolly 209 and the dynamic balance hoist 400 moves along the X direction of one deck guide rail 201, further drive hoist device 100 moves along the X direction of one deck guide rail 201, one deck guide rail 201 and two-layer guide rail 202 below are installed first wire rope 204 and second wire rope 207, install on the first wire rope 204 first spiral trachea 205, install on the second wire rope 207 second spiral trachea 206, first spiral trachea 205 and second spiral trachea 206 are used for providing compressed air for pneumatic balance hoist 400.

Preferably, the supporting structure 300 comprises a ground upright 301, a first-layer beam 302, a second-layer beam 303, a horizontal adjustment structure 304, a guide rail hanging ring 305 and a safety stop lever 306 which are installed on the ground;

the number of the ground upright posts 301 is four, the number of the layer of cross beams 302 is two, and the layer of cross beams 302 are arranged above the upright posts 301; the two-layer cross beam 303 is provided with two and the overlap joint of two-layer cross beam 303 is in one deck cross beam 302 top, one deck cross beam 302 with two-layer cross beam 303 constitutes the well word structure, level adjustment structure 304 installs ground stand 301 below just level adjustment structure 304 is used for adjusting ground stand 301's height, thereby guarantee the position level of one deck cross beam 302 and two-layer cross beam 303, two-layer cross beam 303's both sides all are provided with guide rail rings 305, guide rail rings 305 are used for connecting guide rail lug 203, safety bar 306 installs the lower part of ground stand 301, safety bar 306 is used for preventing the floor's dolly of adjacent station from getting into inside the bearing structure 300, prevents to take place the incident.

Preferably, the pneumatic balance hoist 400 comprises a hoist hook 401, a hoist body 402, a hoist hook 403, a steel wire rope 404 and a safety tongue 405;

the lifting appliance hook 401 is used for hanging the gravity center adjusting lifting ring 101, the steel wire rope 404 is arranged above the lifting appliance hook 401, and the lifting appliance hook 401 is used for pulling the lifting appliance device 100 to ascend or descend; the hoist couple 403 is hung on the second guide rail trolley 209, the hoist body 402 is located hoist couple 401 with hoist couple 403 is between, pulls through the workman hoist device 100, hoist device 100 drives pneumatic balance hoist 400 is in XY is to translation guide rail 200 is gone up to remove, realizes the XY direction of hoist device 100 is removed, safety tongue 405 install hoist couple 401 just safety tongue 405 is used for preventing hoist device 100 from breaking away from hoist couple 401.

When the pneumatic balance hoist is specifically used, a worker holds the operating handle 102 by the left hand and holds the pneumatic balance hoist control handle 107 by the right hand, the lifting appliance device 100 is controlled to be inserted into a hole of the workpiece 500, the workpiece hook 105 can be automatically unfolded to hook the inside of the workpiece 500 after the lifting appliance device 100 enters the hole of the workpiece 500, the worker presses a button on the pneumatic balance hoist control handle 107 again, the pneumatic balance hoist 400 acts to pull the lifting appliance device 100 to lift the workpiece 500, and in the lifting process of the workpiece 500, the guide shaft 110 is pulled to move downwards under the action of gravity of the workpiece 500 to drive the balance pressing block 103 to rotate around the hinge pin 104 to be tightly pressed on the surface of the workpiece 500, and the balance and stability of the workpiece 500 are finally achieved under the combined action of the springs 108;

when the workpiece 500 rises to a sufficient height, a worker releases the button on the pneumatic balance hoist control handle 107, the workpiece 500 stops rising, then the worker pulls the lifting device 100 with both hands, the workpiece 500 moves to a required position along with the lifting device 100 under the guiding action of the XY translation guide rail, the workpiece 500 is placed in place, the worker presses the button on the pneumatic balance hoist control handle 107, the lifting device 100 descends under the action of the pneumatic balance hoist 400, the balance pressing block 103 automatically opens under the action of the spring 108, the workpiece 500 loses the pressing acting force, finally the worker pulls the hook unlocking handle 113, the workpiece hook 105 of the lifting device 100 is retracted, the lifting device 100 is separated from the workpiece 500, and the lifting of the workpiece 500 is completed. The utility model is used for improving the production efficiency of the rear longitudinal beam of the new energy automobile, reducing the labor intensity of workers and guaranteeing the operation safety of the workers.

The preferred embodiments of the present utility model have been described above. It is to be understood that the utility model is not limited to the specific embodiments described above, wherein devices and structures not described in detail are to be understood as being implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model or modifications to equivalent embodiments without departing from the scope of the technical solution of the present utility model, using the methods and technical contents disclosed above, without affecting the essential content of the present utility model. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims (6)

1. A balanced hoist that is used for automatic longeron of new energy automobile back to compress tightly, including installing subaerial bearing structure (300), its characterized in that: an XY translation guide rail (200) is arranged below the supporting structure (300), a pneumatic balance hoist (400) is hung below the XY translation guide rail (200), a lifting device (100) is hung below the pneumatic balance hoist (400), and a workpiece (500) is arranged on the lifting device (100); the lifting appliance device (100) comprises a gravity center adjusting lifting ring (101), an operating handle (102), a balance pressing block (103), a hinge pin (104), a workpiece hook (105), a central shaft (106), a pneumatic balance hoist control handle (107), a spring (108), a connecting plate (109), a guide shaft (110), a tension spring (111), a guide sleeve (112), a hook unlocking handle (113), an adjusting connecting rod (114) and a safety lifting ring (115);

the upper part of the gravity center adjusting lifting ring (101) is hung on the pneumatic balance hoist (400), the lower part of the gravity center adjusting lifting ring (101) is fixed on the adjusting connecting rod (114), the lower part of the adjusting connecting rod (114) is connected with the connecting plate (109), one side of the connecting plate (109) is connected with the operating handle (102), and the operating handle (102) is used for being held by a left hand of a worker; the balance pressing block (103) is arranged below the connecting plate (109) through the hinge pin (104), and the balance pressing block (103) rotates around the connecting plate (109) through the hinge pin (104).

2. The balance sling for automatically compacting a rear longitudinal beam of a new energy automobile as defined in claim 1, wherein: the utility model provides a work piece couple (105) with center pin (106) are located connecting plate (109) bottom, thereby work piece couple (105) are used for hooking work piece (500) inner chamber drives work piece (500) and moves together, center pin (106) be used for with thereby prevent with the hole cooperation of work piece (500) horizontal swinging of work piece (500), pneumatic balance hoist control handle (107) fixed mounting is in on connecting plate (109) and pneumatic balance hoist control handle (107) are used for the workman right hand to hold, spring (108) are located the inside of connecting plate (109), uide bushing (112) are located the inside of connecting plate (109), guiding axle (110) are located the inside of uide bushing (112), guiding axle (110) with uide bushing (112) cooperate and guiding axle (110) are used for in uide bushing (112) reciprocates, the one end of release handle (113) is close to operating handle (102), the other end of couple (113) stretch into extension spring (113) and be connected with connecting plate (111) inside of coupling plate (109).

3. The balance sling for automatically compacting a rear longitudinal beam of a new energy automobile as defined in claim 1, wherein: the lower part of the gravity center adjusting lifting ring (101) is clamped and fixed on the adjusting connecting rod (114) through screws, the left side and the right side of the lower part of the connecting plate (109) are respectively provided with the balance pressing blocks (103) through the hinge pins (104), and the pneumatic balance hoist control handle (107) is provided with an operation button; the safety lifting ring (115) is arranged on the adjusting connecting rod (114), and the safety lifting ring (115) is connected with a safety rope of a workshop production site.

4. The balance sling for automatically compacting a rear longitudinal beam of a new energy automobile as defined in claim 2, wherein: the XY translation guide rail (200) comprises a first layer of guide rail (201), a second layer of guide rail (202), a guide rail lifting lug (203), a first steel wire rope (204), a first spiral air pipe (205), a second spiral air pipe (206), a second steel wire rope (207), a first guide rail trolley (208) and a second guide rail trolley (209);

the two guide rails (201) on one layer are arranged in parallel, the two guide rail lifting lugs (203) are arranged on two sides of each guide rail (201), and each guide rail (201) on one layer is suspended below the supporting structure (300) through the guide rail lifting lugs (203); the utility model discloses a pneumatic balance hoist, including pneumatic balance hoist (400), including first screw pipe (205) and second screw pipe (206), second floor's guide rail (202) below sets up second guide rail dolly (209), second floor's guide rail dolly (209) below has hung has second guide rail dolly (209), second floor's guide rail (202) are through first guide rail dolly (208) hang in each one deck guide rail (201) below just second floor's guide rail (202) are perpendicular state with two one deck guide rail (201), first wire rope (204) and second wire rope (207) are installed to one deck guide rail (201) with second floor's guide rail (202) below, install on the first wire rope (204) first screw pipe (205), install on the second wire rope (207) second screw pipe (206), first screw pipe (205) and second screw pipe (206) are used for providing compressed air for pneumatic balance hoist (400).

5. The balance sling for automatically compacting a rear longitudinal beam of a new energy automobile as defined in claim 4, wherein: the supporting structure (300) comprises a ground upright post (301), a first-layer cross beam (302), a second-layer cross beam (303), a horizontal adjustment structure (304), a guide rail hanging ring (305) and a safety stop lever (306) which are arranged on the ground;

the ground upright posts (301) are provided with four, the number of the one-layer cross beams (302) is two, and the one-layer cross beams (302) are arranged above the upright posts (301); two layers of crossbeams (303) are arranged, two layers of crossbeams (303) are lapped above the first layer of crossbeams (302), the first layer of crossbeams (302) and the second layer of crossbeams (303) form a cross structure, a horizontal adjustment structure (304) is arranged below the ground upright post (301) and is used for adjusting the height of the ground upright post (301), guide rail hanging rings (305) are arranged on two sides of the two layers of crossbeams (303), the guide rail hanging rings (305) are used for connecting guide rail hanging lugs (203), and a safety stop lever (306) is arranged at the lower part of the ground upright post (301).

6. The balance sling for automatically compacting a rear longitudinal beam of a new energy automobile as defined in claim 4, wherein: the pneumatic balance hoist (400) comprises a hoist hook (401), a hoist body (402), a hoist hook (403), a steel wire rope (404) and a safety tongue (405);

the lifting appliance hook (401) is used for hanging the gravity center adjusting lifting ring (101), the steel wire rope (404) is arranged above the lifting appliance hook (401), and the lifting appliance hook (401) is used for pulling the lifting appliance device (100) to ascend or descend; the hoist couple (403) hang on second guide rail dolly (209), hoist body (402) are located hoist couple (401) with hoist couple (403) between, safe tongue (405) are installed on hoist couple (401).