High-precision heavy lifting mechanism

Abstract

The utility model relates to the technical field of lifting devices, and discloses a high-precision heavy lifting mechanism which comprises a bottom plate, the top end face of the bottom plate is fixedly connected with a frame body, the side wall of the frame body is fixedly connected with a motor, the output end of the motor is fixedly connected with a wind-up roller, and the output end of the wind-up roller is fixedly connected with a motor. A stabilizing assembly is arranged on the side wall of the frame body. According to the high-precision heavy lifting mechanism, the lifting platform is always guided and supported by the stand columns in the lifting process, shaking or deviation caused by merely relying on the connecting rope is avoided, the sliding connection of the stand columns plays a role in restraining shaking, the stability of the lifting platform in the lifting process is ensured, and in the lifting process of the lifting platform, the stability of the lifting platform is ensured. Even if the connecting rope is loosened due to external force, the pawl can automatically clamp the ratchet wheel to prevent the ratchet wheel from rotating reversely, so that the lifting platform is prevented from falling off due to loss of driving force, and the safety of the lifting platform is guaranteed through mechanical locking.

Description

TECHNICAL FIELD

[0001] The utility model relates to lifting device technical field, concretely is a high accuracy heavy lifting mechanism. BACKGROUND

[0002] Driving device is various, in the prior art, some adopt screw rod and screw rod nut to drive, through making screw rod nut connect with lifting platform, screw rod connects with belt drive assembly, belt drive assembly is driven through motor, realizes the lifting of lifting platform.

[0003] But the lifting device of screw rod and screw rod nut drive in actual use, the gap between the screw thread of screw rod and the screw thread of screw rod nut will inevitably exist, due to the existence of the gap, screw rod nut will shake relative to screw rod in the movement process, not only directly affect the stability of movement, and the error is larger, difficult to be used in the occasion of higher precision requirement, in view of this, we propose a high accuracy heavy lifting mechanism. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high accuracy heavy lifting mechanism to solve the problem in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a high accuracy heavy lifting mechanism, including the bottom plate, the top end surface fixed connection of bottom plate has the frame body, the lateral wall fixed connection of frame body has motor, the output of motor fixed connection has the winding roller, the lateral wall fixed connection of winding roller has the connecting rope, the one end fixed connection of connecting rope away from winding roller has the lifting platform, the lateral wall of frame body is provided with stabilizing assembly, and the stabilizing assembly includes:

[0006] The column is fixedly connected to the top end surface of the bottom plate, and the column is slidably connected with the lifting platform.

[0007] The shell is fixedly connected to the lateral wall of the frame body, the inside of the shell is provided with a ratchet wheel, the inner wall of the shell is rotatably connected with a pawl, and the side wall of the pawl is fixedly connected with a spring.

[0008] The abutment block is rotatably connected with the inner wall of the shell, the side wall of the abutment block is rotatably connected with a connecting rod, the outer wall of the shell is fixedly connected with an electric push rod, and the output end of the electric push rod is fixedly connected with a connecting piece.

[0009] Preferably, the end of the spring away from the pawl is fixedly connected to the inner wall of the shell, and the pawl cooperates with the ratchet wheel.

[0010] Preferably, the outer wall of the shell is provided with a notch, the notch is movably connected with the connecting rod, the side wall of the connecting piece is provided with an open slot, and the open slot is movably connected with the connecting rod.

[0011] Preferably, the ratchet wheel is fixedly connected with the side wall of the winding roller, the connecting rope is wound on the side wall of the winding roller, the winding roller rotates to wind the connecting rope, and the ratchet wheel rotates at the same time.

[0012] Preferably, the inner wall of the frame body is fixedly connected with a limiting frame, the connecting rope passes through the through hole in the limiting frame, the side wall of the frame body is sleeved with a reciprocating screw rod, the side wall of the reciprocating screw rod is threadedly connected with a threaded piece, the connecting rope passes through the through hole in the threaded piece, the reciprocating screw rod is fixedly connected with a belt pulley on the side wall of the winding roller, and the outer surface of the belt pulley is transmissionally connected with a belt.

[0013] Preferably, the inner wall of the frame body is fixedly connected with a cross rod, the cross rod is slidably connected with the threaded piece, and the limiting of the cross rod enables the threaded piece to only move horizontally.

[0014] Compared with the prior art, the high-precision heavy lifting mechanism has the following beneficial effects:

[0015] 1. The high-precision heavy lifting mechanism, through the setting of the stabilizing assembly, the lifting platform is always guided and supported by the stand column during the lifting process, the shaking or deviation caused by simply relying on the connecting rope is avoided, the sliding connection of the stand column plays a role in inhibiting shaking, and the stability of the lifting platform during the lifting process is ensured, during the lifting process of the lifting platform, even if the connecting rope is relaxed due to external force, the pawl can automatically clamp the ratchet wheel, reverse rotation of the ratchet wheel is prevented, and in turn, falling of the lifting platform due to loss of driving force is prevented, and the safety of the lifting platform is ensured through mechanical locking.

[0016] 2. The high-precision heavy lifting mechanism, through the setting of the reciprocating screw rod and the threaded piece, the threaded piece moves horizontally and reciprocally with the connecting rope, the connecting rope is uniformly wound on the outer wall of the winding roller, the uniform distribution of the connecting rope along the outer wall of the winding roller is ensured, the problems of accumulation and knotting are avoided, the lifting platform can keep stable during the operation process, and lifting deviation or platform inclination caused by problems of the rope are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the main body structure of the utility model;

[0018] Figure 2 It is a schematic view of the frame body structure of the utility model;

[0019] Figure 3 It is a schematic view of the winding roller structure of the utility model;

[0020] Figure 4 It is a schematic view of the utility modelFigure 3 Structure diagram of middle A area;

[0021] Figure 5 Structure diagram of the shell inside the utility model;

[0022] Figure 6 Structure diagram of the reciprocating screw rod of the utility model.

[0023] In the figure: 1, bottom plate; 2, frame body; 3, motor; 4, winding roller; 5, connecting rope; 6, lifting platform; 7, stabilizing assembly; 701, stand; 702, shell; 703, ratchet wheel; 704, spring; 705, pawl; 706, abutment block; 707, connecting rod; 708, electric push rod; 709, connecting piece; 8, limiting frame; 9, reciprocating screw rod; 10, threaded part; 11, belt; 12, cross bar. DETAILED DESCRIPTION

[0024] As Figures 1-6 shown, the utility model provides a technical scheme: a high-precision heavy lifting mechanism, including bottom plate 1, the top end surface of bottom plate 1 is fixedly connected with frame body 2, the side wall of frame body 2 is fixedly connected with motor 3, the output of motor 3 is fixedly connected with winding roller 4, the side wall of winding roller 4 is fixedly connected with connecting rope 5, the end of connecting rope 5 away from winding roller 4 is fixedly connected with lifting platform 6, the side wall of frame body 2 is provided with stabilizing assembly 7, and stabilizing assembly 7 includes stand 701, shell 702, ratchet wheel 703, spring 704, pawl 705, abutment block 706, connecting rod 707, electric push rod 708 and connecting piece 709.

[0025] In an embodiment of the utility model, the stand 701 is fixedly connected at the top end surface of the bottom plate 1, and the stand 701 is slidably connected with the lifting platform 6.

[0026] The shell 702 is fixedly connected at the side wall of the frame body 2, the inside of the shell 702 is provided with the ratchet wheel 703, the side wall of the ratchet wheel 703 is fixedly connected with the winding roller 4, the connecting rope 5 is wound at the side wall of the winding roller 4, the winding roller 4 is rotated to wind the connecting rope 5, and simultaneously makes the ratchet wheel 703 rotate, the inner wall of the shell 702 is rotatably connected with the pawl 705, the side wall of the pawl 705 is fixedly connected with the spring 704, one end of the spring 704 away from the pawl 705 is fixedly connected at the inner wall of the shell 702, and the pawl 705 is matched with the ratchet wheel 703.

[0027] The abutment block 706 is rotationally connected with the inner wall of the shell 702, the side wall of the abutment block 706 is rotationally connected with the connecting rod 707, the outer wall of the shell 702 is fixedly connected with the electric push rod 708, the output end of the electric push rod 708 is fixedly connected with the connecting piece 709, the outer wall of the shell 702 is provided with a slot, the slot is movably connected with the connecting rod 707, the side wall of the connecting piece 709 is provided with an open slot, the open slot is movably connected with the connecting rod 707, the electric push rod 708 pushes and pulls the connecting piece 709, and then pushes and pulls the abutment block 706, so that different pawls 705 are controlled to be matched with the ratchet wheel 703.

[0028] The motor 3 drives the winding roller 4 to rotate, the connecting rope 5 is wound, and the lifting platform 6 moves upwards, and the lifting platform 6 is slidably connected with the stand 701, so that the lifting platform 6 is always guided and supported by the stand 701 during lifting, avoiding shaking or deviation caused by simply relying on the connecting rope 5, and the sliding connection of the stand 701 plays a role in inhibiting shaking, ensuring the stability of the lifting platform 6 during lifting.

[0029] The abutment block 706 drives a group of pawls 705 to move away from the pawls 705, and another group of pawls 705 is matched with the ratchet wheel 703 under the elasticity of the spring 704, so that the ratchet wheel 703 can only move in one direction, allowing the winding roller 4 to rotate in only one direction and be locked in the opposite direction. During the lifting of the lifting platform 6, even if the connecting rope 5 is relaxed due to external force, the pawl 705 will automatically block the ratchet wheel 703, preventing it from rotating in the opposite direction, thereby preventing the lifting platform 6 from falling due to loss of driving force. The safety of the lifting platform 6 is ensured by mechanical locking, especially in industrial scenarios, when power is suddenly cut off or emergency stop, the lifting platform 6 can be prevented from falling.

[0030] In addition, the inner wall of the frame body 2 is fixedly connected with a limiting frame 8, the connecting rope 5 passes through the through hole in the limiting frame 8, the side wall of the frame body 2 is sleeved with a reciprocating screw rod 9, the side wall of the reciprocating screw rod 9 is threadedly connected with a threaded piece 10, the connecting rope 5 passes through the through hole in the threaded piece 10, the side wall of the reciprocating screw rod 9 is fixedly connected with a belt pulley of the winding roller 4, the outer surface of the belt pulley is drivingly connected with a belt 11, the inner wall of the frame body 2 is fixedly connected with a cross rod 12, the cross rod 12 is slidably connected with the threaded piece 10, the limiting of the cross rod 12 enables the threaded piece 10 to move only horizontally, the rotation of the winding roller 4 drives the reciprocating screw rod 9 to rotate through the transmission of the belt 11, and then the threaded piece 10 moves horizontally and reciprocally, and then the threaded piece 10 drives the connecting rope 5 to move horizontally and reciprocally, so that the connecting rope 5 is uniformly wound on the outer wall of the winding roller 4, ensuring that the connecting rope 5 is uniformly distributed along the outer wall of the winding roller 4, avoiding the problems of accumulation and knotting, and ensuring that the lifting platform 6 remains stable during operation, avoiding lifting deviation or platform inclination caused by rope problems.

[0031] In the utility model, when using, winding roller 4 rotates, winding is carried out to connecting rope 5, make lifting platform 6 upward movement, lifting platform 6 upward movement is guided and supported to post 701 slidingly connected with simultaneously, make lifting platform 6 always receive the guidance and support of post 701 in the lifting process, avoid the shaking or deviation caused by simply relying on connecting rope 5, ratchet wheel 703 can only unidirectional movement, allow winding roller 4 only in one direction rotation, but in the opposite direction is locked, in the lifting process of lifting platform 6, even if connecting rope 5 relaxes due to external force, pawl 705 will automatically jam ratchet wheel 703, prevent its reverse rotation, thereby prevent lifting platform 6 from falling due to the loss of driving force.

[0032] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, without departing from the spirit of the utility model, the modifications or improvements are within the scope of the utility model.

Claims

1. A high-precision heavy-duty lifting mechanism, comprising a base plate (1), a frame (2) fixedly connected to the top end face of the base plate (1), a motor (3) fixedly connected to the side wall of the frame (2), a winding roller (4) fixedly connected to the output end of the motor (3), a connecting rope (5) fixedly connected to the side wall of the winding roller (4), and a lifting platform (6) fixedly connected to the end of the connecting rope (5) away from the winding roller (4), characterized in that: The side wall of the frame (2) is provided with a stabilizing component (7), the stabilizing component (7) including: The column (701) is fixedly connected to the top end face of the base plate (1), and the column (701) is slidably connected to the lifting platform (6); The housing (702) is fixedly connected to the side wall of the frame (2). A ratchet (703) is provided inside the housing (702). A pawl (705) is rotatably connected to the inner wall of the housing (702). A spring (704) is fixedly connected to the side wall of the pawl (705). A contact block (706) is rotatably connected to the inner wall of the housing (702). A connecting rod (707) is rolled on the side wall of the contact block (706). An electric push rod (708) is fixedly connected to the outer wall of the housing (702). A connector (709) is fixedly connected to the output end of the electric push rod (708).

2. The high-precision heavy-duty lifting mechanism according to claim 1, characterized in that: The end of the spring (704) away from the pawl (705) is fixedly connected to the inner wall of the housing (702), and the pawl (705) cooperates with the ratchet (703).

3. The high-precision heavy-duty lifting mechanism according to claim 1, characterized in that: The outer wall of the housing (702) is provided with a slot, which is movably connected to the connecting rod (707). The side wall of the connector (709) is provided with an opening slot, which is movably connected to the connecting rod (707).

4. The high-precision heavy-duty lifting mechanism according to claim 1, characterized in that: The ratchet (703) is fixedly connected to the side wall of the take-up roller (4), and the connecting rope (5) is wound around the side wall of the take-up roller (4).

5. A high-precision heavy-duty lifting mechanism according to claim 1, characterized in that: The inner wall of the frame (2) is fixedly connected to a limiting frame (8), the connecting rope (5) passes through the through hole in the limiting frame (8), the side wall of the frame (2) is sleeved with a reciprocating screw (9), the side wall of the reciprocating screw (9) is threadedly connected to a threaded part (10), the connecting rope (5) passes through the through hole in the threaded part (10), the reciprocating screw (9) is fixedly connected to the side wall of the take-up roller (4) with a pulley, and the outer surface of the pulley is connected to a belt (11).

6. A high-precision heavy-duty lifting mechanism according to claim 5, characterized in that: A crossbar (12) is fixedly connected to the inner wall of the frame (2), and the crossbar (12) is slidably connected to the threaded part (10).

Images