Lead screw lifting anti-falling assembly frame

Abstract

The utility model relates to the technical field of assembly frames, in particular to an anti-falling assembly frame for lead screw lifting, which comprises an assembly frame, a lifting seat and a screw are arranged on the assembly frame, the screw is fixed on the assembly frame, the lifting seat is slidably mounted on the assembly frame and is in threaded connection with the screw, and a rack, a limiting clamping plate and an anti-falling device are arranged on the assembly frame. The rack is vertically installed on the assembly frame, the limiting clamping plate is hinged to the lifting base, sharp teeth connected with the rack in a clamped mode are arranged on the limiting clamping plate, the falling protector is installed on the assembly frame, a traction rope is connected to the falling protector, a pulley is arranged on the limiting clamping plate, the traction rope winds around the pulley, and the tail end of the traction rope is connected to the lifting base. According to the anti-falling device, the stability of the lifting base after locking is guaranteed, the situation that the lifting base is damaged again due to damage of the anti-falling device is avoided, and the situation that transformer parts are damaged and operators are injured when the lifting base falls accidentally is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly frames, in particular to an assembly frame with screw rod lifting and anti-falling function. Background Art

[0002] Due to the large volume of the body of a large transformer, an assembly frame must be used during the assembly process. The installation and debugging of the body parts are completed through the forward and backward movement of the assembly frame and the up and down movement of the workbench.

[0003] The prior art discloses a transformer assembly bracket with the application number CN201610513076.3. The adopted technical solution is as follows: for the transformer assembly bracket, a fixed column is welded to the top end of the embedded plate. There are several inverted Y-shaped hollow channels in the embedded plate, and the openings of the hollow channels extend to the upper end surface of the embedded plate. A number of vertically arranged fixed holes are evenly distributed on the fixed column; several sleeves are welded at the edge position of the fixed plate. The sleeves can be sleeved on the fixed column and fixed in position with fastening bolts; the transformer assembly box is fixed to the top end of the fixed plate through H-shaped steel pipes. A shock-absorbing rubber pad is filled in the upper groove of the H-shaped steel pipe. There are several vertical shock-absorbing cavities in the shock-absorbing rubber pad, and a shock-absorbing spring extending in the same direction is arranged in any one of the shock-absorbing cavities. However, this technical solution lacks an anti-falling module. When the lifting platform of the assembly frame accidentally falls, self-locking cannot be achieved, easily leading to damage to transformer parts and injury to operators.

[0004] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Summary of the Invention

[0005] The purpose of the utility model is to solve the problems in the prior art, and provide an assembly frame with screw rod lifting and anti-falling function, so as to solve the problems of damage to transformer parts and the safety of operators caused by the accidental fall of the lifting seat of the assembly frame.

[0006] The technical solution of the utility model is as follows:

[0007] An assembly frame with screw rod lifting and anti-falling function, comprising an assembly frame, on which there are a lifting seat and a screw rod. The screw rod is fixed to the assembly frame, and the lifting seat is slidably installed on the assembly frame. The lifting seat is threadedly connected to the screw rod. A rack, a limit clamping plate and an anti-falling device are arranged on the assembly frame. The rack is vertically installed on the assembly frame. The limit clamping plate is hinged to the lifting seat. There are pointed teeth on the limit clamping plate that are engaged with the rack. The anti-falling device is installed on the assembly frame. A traction rope is connected to the anti-falling device. There is a pulley on the limit clamping plate. The traction rope passes around the pulley and its end is connected to the lifting seat.

[0008] Through the above technical solution, the lifting seat slides up and down along the assembly frame. When the lifting seat falls, and the anti-falling device and the lifting seat are lifted and lowered within the normal range, the anti-falling device does not play a traction role on the lifting seat. When an accidental tooth break occurs between the screw and the lifting seat, and the lifting seat falls rapidly, when the descending speed of the anti-falling device exceeds its set safety speed, the anti-falling device locks the traction rope, and the lifting seat stops descending. To further ensure the locking strength of the lifting seat and avoid accidental breakage of the traction rope of the anti-falling device, the limit clamping plate is pulled up by the traction rope, and the pointed teeth of the limit clamping plate are clamped into the rack, realizing the clamping connection between the limit clamping plate and the rack, ensuring the locking strength after the accidental fall of the lifting seat, and avoiding damage to the transformer components and injury to the operators when the lifting seat accidentally falls.

[0009] As a preferred technical solution, a spring is hinged between the lifting seat and the limit clamping plate. The spring is arranged at the upper end of the limit clamping plate and on one side of the pointed teeth of the limit clamping plate.

[0010] Through the above technical solution, after the accidental fall of the lifting seat, the traction rope of the anti-falling device pulls up the limit clamping plate, and at the same time the spring contracts, pulling up the limit clamping plate upward. The spring ensures the stability of the clamping connection between the limit clamping plate and the rack, avoids the limit clamping plate from slipping out of the tooth groove of the rack, and further ensures the locking strength after the accidental fall of the lifting seat.

[0011] As a preferred technical solution, a driving motor is arranged on the lifting seat, and the driving motor drives the lifting seat to move up and down along the screw.

[0012] As a preferred technical solution, a first guide wheel and a second guide wheel are arranged on the lifting seat, and a guide slideway is arranged on the assembly frame. The first guide wheel and the second guide wheel are arranged in the guide slideway. The lifting seat slides along the guide slideway through the first guide chain and the second guide wheel, ensuring the stability of the lifting and moving of the lifting seat.

[0013] As a preferred technical solution, a positioning bolt is arranged on the lifting seat, and the end of the traction rope is fixed to the positioning bolt, which is used to play a preliminary locking role on the lifting seat by the anti-falling device when the lifting seat accidentally falls, and avoid the continuous fall of the lifting seat.

[0014] As a preferred technical solution, a lamp is arranged on the assembly frame for lighting during transformer assembly.

[0015] As a preferred technical solution, an alarm is arranged on the assembly frame for alarming when the lifting seat accidentally falls, reminding the operator to deal with it in time.

[0016] As a preferred technical solution, walking wheels are arranged at the bottom of the assembly frame for the walking of the assembly frame.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] The assembly frame for preventing the fall of the lead screw lift of the present utility model is provided with a lifting seat, a fall arrester, and a rack on the assembly frame. A limit clamping plate is provided on the lifting seat. The fall arrester is installed on the assembly frame. The towing rope of the fall arrester is connected to the lifting seat. A pulley is provided on the limit clamping plate. The towing rope passes around the pulley. A pointed tooth that is clamped with the rack is provided on the limit clamping plate. The fall arrester realizes the locking when the lifting seat accidentally falls. The limit clamping plate strengthens the clamping strength between the lifting seat and the rack, ensures the stability after the lifting seat is locked, avoids the damage to the lifting seat caused by the damage of the fall arrester again, and avoids the damage of the transformer parts and the injury of the operator when the lifting seat accidentally falls. Description of the Drawings

[0019] Figure 1 is a schematic structural view of the assembly frame for preventing the fall of the lead screw lift of the present utility model;

[0020] Figure 2 is a schematic internal structure view of the assembly frame for preventing the fall of the lead screw lift of the present utility model;

[0021] Figure 3 is the front view of the assembly frame for preventing the fall of the lead screw lift of the present utility model;

[0022] Figure 4 is the rear view of the assembly frame for preventing the fall of the lead screw lift of the present utility model;

[0023] Figure 5 is a schematic view of the locked state of the assembly frame for preventing the fall of the lead screw lift of the present utility model.

[0024] In the figure: 1. Lamp; 2. Lifting seat; 3. Assembly frame; 4. Screw rod; 5. Rack; 6. Alarm; 7. Fall arrester; 8. Guide slideway; 9. Traveling wheel; 10. First guide wheel; 11. Second guide wheel; 12. Spring; 13. Limit clamping plate; 14. Fixed column; 15. Hinge shaft; 16. Positioning bolt; 17. Pulley; 18. Towing rope; 19. Driving motor. Detailed Embodiments

[0025] In order to make the technical means, technical features, utility model purpose and technical effects achieved by the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0026] Embodiment 1:

[0027] As Figure 1 and Figure 2 shown, it is a schematic structural view of the assembly frame for preventing the fall of the lead screw lift of the present utility model.

[0028] The screw lifting anti-falling assembly frame of this embodiment includes an assembly frame 3, a lifting seat 2 is installed on the assembly frame 3, guide slides 8 are installed on the left and right sides of the assembly frame 3, and a vertical first guide wheel 10 and a horizontal second guide wheel 11 are installed on the left and right sides of the lifting seat 2. The first guide wheel 10 and the second guide wheel 11 are installed in the guide slide 8. The bidirectional guide wheels are provided to ensure the stability of the lifting seat 2 when sliding along the guide slide 8. A vertical rack 5 is fixed on the assembly frame 3, and a limited clamping plate 13 is hinged on the lifting seat 2. The limited clamping plate 13 is provided with sharp teeth that are clamped with the rack 5. A spring 12 is hinged between the limited clamping plate 13 and the lifting seat 2, and the spring 12 is installed on the upper end of the limited clamping plate 13. A fixing 14 is fixed on the assembly frame 3, and a fall arrester 7 is connected to the fixing 14. The fall arrester 7 is connected to a traction rope 18, and the end of the traction rope 18 is fixed on the lifting seat 2. A screw rod 4 is fixed on the assembly frame 3, and the lifting seat 2 is threadedly connected to the screw rod 4. A driving motor 19 is fixed on the lifting seat 2, and a driving gear is installed between the driving motor 19 and the screw 4. The lifting seat 2 is rotatably connected with the driving gear, and a transmission gear is connected between the output end of the driving motor 19 and the driving gear. The driving motor 19 drives the lifting seat 2 to move up and down.

[0029] The bottom of the assembly frame 3 is provided with running wheels 9 for moving the assembly frame 3 to facilitate operators to move the frame.

[0030] A lamp 1 is installed on the upper end of the assembly frame 3 for lighting during the transformer assembly operation.

[0031] An alarm 6 is installed at the upper end of the assembly frame 3 to serve as an alarm when the lifting base 2 falls.

[0032] like Figure 3 and Figure 4 As shown, it is the front view and the rear view of the screw lifting and falling prevention assembly frame of the utility model.

[0033] The lifting seat 2 shown is fixed with a hinge shaft 15, the limit clamping plate 13 is hinged to the lifting seat 2 via the hinge shaft 15, a pulley 17 and a positioning bolt 16 are installed on the lifting seat 2, a traction rope 18 passes through the lifting seat 2 and extends into the lifting seat 2, the traction rope 18 is wound around the pulley 17, and the end of the traction rope 18 is fixed to the positioning bolt 16. When the lifting seat 2 slides up and down in a normal state, the traction rope 18 is in a relaxed state.

[0034] like Figure 5 The figure shows a schematic diagram of the locking state of the screw lifting and falling prevention device of the present invention.

[0035] When the lifting seat 2 fails unexpectedly, the lifting seat 2 falls along the screw 4. When the lifting seat 2 is lifted or lowered within the normal speed range, the anti-drop device does not work. When the lifting seat 2 fails and falls, the descending speed of the lifting seat 2 exceeds the set safety speed of the anti-drop device 7, the anti-drop device 7 self-locks, the traction rope 18 is locked and tightened, and the lifting seat 2 stops falling through the traction rope 18, thereby realizing the preliminary self-locking of the lifting seat 2; the limit card plate 13 rotates upward due to the pulling force of the traction rope 18, and after the limit card plate 13 rotates upward by a set angle, the sharp teeth of the limit card plate 13 are clamped into the rack 5, thereby realizing the clamping connection between the limit card plate 13 and the rack 5, which is used for the self-locking of the lifting seat 2 again, thereby ensuring the self-locking strength of the lifting seat 2 and preventing the lifting seat 2 from falling again.

[0036] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. An assembly frame for preventing a screw from lifting and falling, comprising an assembly frame (3), a lifting seat (2) and a screw (4) being provided on the assembly frame (3), the screw (4) being fixed on the assembly frame (3), the lifting seat (2) being slidably mounted on the assembly frame (3), the lifting seat (2) being threadedly connected to the screw (4), characterized in that: The assembly frame (3) is provided with a rack (5), a limiting clamping plate (13) and a fall arrester (7); the rack (5) is vertically mounted on the assembly frame (3); the limiting clamping plate (13) is hinged to the lifting seat (2); the limiting clamping plate (13) is provided with sharp teeth that are engaged with the rack (5); the fall arrester (7) is mounted on the assembly frame (3); a traction rope (18) is connected to the fall arrester (7); the limiting clamping plate (13) is provided with a pulley (17); the traction rope (18) is wound around the pulley (17) and the end of the traction rope (18) is connected to the lifting seat (2).

2. The screw lifting and falling prevention assembly frame according to claim 1 is characterized in that: A spring (12) is hinged between the lifting seat (2) and the limiting clamping plate (13); the spring (12) is arranged at the upper end of the limiting clamping plate (13), and the spring (12) is arranged on one side of the sharp teeth of the limiting clamping plate (13).

3. The screw lifting and falling prevention assembly frame according to claim 1 is characterized in that: The lifting seat (2) is provided with a driving motor (19).

4. The screw lifting and falling prevention assembly frame according to claim 1 is characterized in that: The lifting seat (2) is provided with a first guide wheel (10) and a second guide wheel (11), the assembly frame (3) is provided with a guide slideway (8), and the first guide wheel (10) and the second guide wheel (11) are arranged in the guide slideway (8).

5. The screw lifting and falling prevention assembly frame according to claim 1 is characterized in that: The lifting seat (2) is provided with a positioning bolt (16), and the end of the traction rope (18) is fixed on the positioning bolt (16).

6. The screw lifting and falling prevention assembly frame according to claim 1 is characterized in that: The assembly frame (3) is provided with a lamp (1).

7. The screw lifting and falling prevention assembly frame according to claim 1 is characterized in that: An alarm (6) is provided on the assembly frame (3).

8. The screw lifting and falling prevention assembly frame according to claim 1, characterized in that: The bottom of the assembly frame (3) is provided with walking wheels (9).

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