Energy-saving lifting platform for building construction with protective function

Abstract

This invention discloses an energy-saving construction lifting platform with protective functions, comprising a base plate, support frames fixedly connected to the left and right sides of the upper end face of the base plate, and a top plate fixedly connected to the upper end of the support frames; guide grooves fixedly connected to the sides of the support frames, and a lifting load frame disposed on the upper side of the base plate; a frame door is connected to the front end of the lifting load frame via a hinge. This invention facilitates the limiting and locking of the lifting load frame in the event of rope breakage through a fall protection mechanism, thereby effectively improving the safety of the construction lifting platform. It also facilitates the buffering of the locking of the lifting load frame through a buffer spring, thus preventing injury to workers from sudden stops. Furthermore, it allows for the selection of a smaller power drive motor through the use of pulley blocks, thereby improving the energy-saving performance of the construction lifting platform.

Description

Technical Field

[0001] The invention relates to the technical field of lifting platforms for building construction, and in particular to an energy-saving lifting platform for building construction with a protective function. Background Art

[0002] A lifting platform is a lifting machine that transports people or objects vertically. It also refers to equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often equipped with various flat conveying equipment. As a connecting device for conveyor lines at different heights, the lifting platform is widely used in the field of construction. However, the existing lifting platforms for construction still have the following shortcomings:

[0003] 1. The existing lifting platform for construction does not have a fall protection function. When the lifting rope breaks, the lifting frame will fall sharply downward, causing damage to the workers and transported objects, resulting in safety accidents, making the use safety of the existing lifting platform for construction poor;

[0004] 2. Existing construction lifting platforms usually work by directly winding up the pull rope through the motor. This method can easily cause the lifting frame to fall out of control when the motor suddenly loses power, which can easily cause danger. In addition, the direct winding of the pull rope through the motor requires a relatively high-power motor, which makes the power consumption of the construction lifting platform relatively high.

[0005] Therefore, there is a need for an energy-saving lifting platform for building construction with a protective function to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide an energy-saving lifting platform for construction with a protective function, so as to solve the problems of poor safety and energy-saving performance of existing lifting platforms for construction mentioned in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An energy-saving lifting platform for building construction with a protective function comprises a bottom plate, a support frame is fixedly connected to the left and right sides of the upper end surface of the bottom plate, and a top plate is fixedly connected to the upper end of the support frame:

[0009] A guide slot is relatively fixedly connected to the side of the support frame, and a lifting bearing frame is arranged on the upper side of the bottom plate;

[0010] The front end of the lifting bearing frame is connected to a frame door through a hinge, and sliding frames are fixedly connected to the left and right side surfaces of the lifting bearing frame, and the sliding frames are slidably connected to the corresponding guide slide grooves;

[0011] The upper end surface of the sliding frame is fixedly connected with a fall protection mechanism, and the upper end of the fall protection mechanism is connected with a movable pulley;

[0012] A fixed pulley is fixedly connected to the middle of the lower end surface of the top plate, and a winding drive mechanism is fixedly connected to the upper end surface of the top plate;

[0013] A pull rope is connected between the movable pulley and the fixed pulley, and a driving motor is fixedly connected to the upper end surface of the top plate, and the driving motor is connected to the winding driving mechanism.

[0014] By adopting the above technical scheme, it is possible to limit and lock the lifting load frame in the event of a breakage of the pull rope through the fall protection mechanism, thereby effectively improving the safety of the use of the lifting platform for construction, and it is possible to select a smaller power drive motor through the cooperation of the pulley group, thereby improving the energy-saving performance of the lifting platform for construction.

[0015] Preferably, the fall protection mechanism comprises a protective shell:

[0016] The protective housing is fixedly connected to the upper end of the sliding frame, and a rotating sleeve is connected to the middle position of the protective housing via a bearing;

[0017] The inner wall of the rotating sleeve is provided with a driving groove, and the middle part of the upper end surface of the protective shell is slidably connected with a telescopic rod up and down;

[0018] The lower end surface of the telescopic rod is fixedly connected to a limit block, and the lower side of the limit block is fixedly connected to a driving column, and both ends of the driving column are slidably connected in the driving groove;

[0019] The upper end of the limit block is connected to a driving spring, and the driving spring is arranged at the lower side of the inner top surface of the protective shell;

[0020] A synchronous gear is keyed on the side of the rotating sleeve, and a control rack is meshedly connected on the side of the synchronous gear;

[0021] One end of the control rack is fixedly connected to a limit block, and the limit block is slidably connected to the left and right sides of the protective shell;

[0022] The interior of the guide slide groove is connected to a limiting strip, and a limiting groove is arranged on the side surface of the limiting strip.

[0023] By adopting the above technical solution, when the telescopic rod is pulled normally by the pull rope, the limit bar is retracted inside the protective shell, and the lifting load frame can move up and down normally. When the pull rope breaks, the telescopic rod moves downward under the action of the driving spring, so that the limit block is engaged in the limit groove, thereby locking the lifting load frame, thereby avoiding the occurrence of accidents and improving the safety of the lifting platform.

[0024] Preferably, the limit bar is slidably connected to the inside of the guide slot up and down, and a buffer spring is connected between the lower end surface of the limit bar and the inner lower end surface of the guide slot.

[0025] By adopting the above technical solution, the locking of the lifting bearing frame can be buffered by the buffer spring, thereby avoiding injuries to the staff caused by emergency stop.

[0026] Preferably, the winding drive mechanism comprises a winding box:

[0027] The winding box is fixedly connected to the upper end surface of the top plate, and a rope threading hole is provided on the bottom surface of the winding box;

[0028] The interior of the winding box is connected to a winding shaft via a bearing, and a pull rope is wound around the winding shaft;

[0029] One end of the winding shaft is key-connected with a worm wheel, and a worm is connected to the rotating shaft of the driving motor, and the worm is meshingly connected with the worm wheel.

[0030] By adopting the above technical solution, the transmission setting of the worm and the worm wheel can facilitate the self-locking effect of the winding shaft. When the driving motor suddenly loses power or fails, the winding shaft will not rotate, thereby ensuring that the lifting load frame is in a stationary state, further improving the safety of the lifting platform.

[0031] Preferably, one end of the pull rope is fixedly connected to the upper end of the housing of the movable pulley, and the pull rope is wound around the fixed pulley and passed through the fixed pulley to the movable pulley, and the other end of the pull rope is wound into the winding drive mechanism.

[0032] By adopting the above technical solution, the tension at one end of the pull rope can be reduced through the combination of the movable pulley and the fixed pulley, and a smaller power driving motor can be used for operation, thereby improving the energy-saving performance of the lifting platform.

[0033] Preferably, the driving groove is arranged obliquely relative to the vertical axis of the rotating sleeve.

[0034] By adopting the above technical solution, the driving groove can be tilted relative to the vertical axis of the rotating sleeve so that when the driving column slides in the driving groove, the rotating sleeve will rotate to drive the synchronous gear to rotate.

[0035] Preferably, the telescopic rod has a polygonal column shape, and the upper end surface of the protective shell is provided with a corresponding polygonal hole.

[0036] By adopting the above technical solution, the telescopic rod can be conveniently configured in a polygonal column shape so that the telescopic rod does not rotate during the telescopic movement, thereby enabling the rotating sleeve to rotate.

[0037] Preferably, the control rack is slidably connected to the front and rear sides of the synchronous gear.

[0038] By adopting the above technical solution, it is possible to control the rack to be slidably connected to the front and rear sides of the synchronous gear so that when the synchronous gear rotates, it can drive the racks on both sides to move closer to or away from each other, thereby driving the limit block to perform telescopic movement.

[0039] Preferably, the limiting grooves are linearly and equidistantly distributed on the side surfaces of the limiting strip, and the limiting blocks match the sizes of the limiting grooves.

[0040] By adopting the above technical solution, the size of the limiting card block can be matched with that of the limiting slot so that the limiting card block can enter the limiting slot, thereby locking the position of the lifting bearing frame.

[0041] Preferably, the limit blocks are retracted to the internal positions of both ends of the protective shell.

[0042] By adopting the above technical solution, the limiting blocks can be retracted to the internal positions of the two ends of the protective shell so that the lifting and lowering bearing frame can slide up and down in a normal state.

[0043] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy-saving construction lifting platform with protection function can facilitate the limit locking of the lifting bearing frame in the case of rope breakage through the fall protection mechanism, thereby effectively improving the use safety of the construction lifting platform, and can facilitate the buffering of the locking of the lifting bearing frame through the buffer spring, thereby avoiding the injury of the staff caused by the emergency stop, and can facilitate the selection of a smaller power driving motor through the cooperation of the pulley block, thereby improving the energy-saving performance of the construction lifting platform:

[0044] 1. When the pull rope breaks, the telescopic rod loses the upward traction force, and the telescopic rod moves downward under the action of the driving spring, so that the telescopic rod drives the driving column to slide in the driving groove, and the rotating sleeve is rotated by force. The rotation of the rotating sleeve drives the synchronous gear connected to its side to rotate, and the rotation of the synchronous gear drives the control racks on the front and rear sides to slide away from each other, so that the control rack drives the limit card block to extend out of the protective shell, and the limit card block enters the limit groove on the limit bar. The protective shell notifies the fall to lock the lifting load frame, so that the lifting load frame can be locked in a limit position by the fall protection mechanism when the pull rope breaks, which effectively improves the safety of the lifting platform for construction;

[0045] 2. By driving the limit bar to slide downward in the guide slot under the inertia of the lifting bearing frame, and buffering the lifting bearing frame through the buffer spring at the lower end of the limit bar, it is avoided that the workers are injured by a large sudden stop impact, thereby further improving the safety of the lifting platform for construction;

[0046] 3. The transmission setting of the worm and the worm wheel can achieve a self-locking effect on the winding shaft. When the driving motor suddenly loses power or fails, the winding shaft will not rotate, which can ensure that the lifting frame is in a stationary state, thereby improving the safety of the lifting platform. The tension at one end of the pull rope is reduced by the combination of the movable pulley and the fixed pulley, so that a smaller power driving motor can be used to work, thereby improving the energy-saving performance of the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a front perspective structural schematic diagram of the present invention;

[0048] Figure 2 For the present invention Figure 1 A schematic diagram of the enlarged structure of point A;

[0049] Figure 3 It is a rear-view stereoscopic structural schematic diagram of the present invention;

[0050] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of point B in the middle;

[0051] Figure 5 It is a schematic diagram of the cross-sectional structure of the winding box of the present invention;

[0052] Figure 6 This is a schematic diagram of the cross-sectional structure of the guide chute of the present invention;

[0053] Figure 7 For the present invention Figure 6 The schematic diagram of the enlarged structure of point C in the middle;

[0054] Figure 8This is a schematic diagram of the connection structure of the lifting bearing frame of the present invention;

[0055] Fig. 9 It is a schematic diagram of the front cross-sectional structure of the fall protection mechanism of the present invention;

[0056] Fig.10 For the present invention Fig. 9 The enlarged structural diagram of point D in the middle;

[0057] Fig.11 It is a schematic diagram of the cross-sectional structure of the fall protection mechanism of the present invention from top view.

[0058] In the figure: 1, bottom plate; 2, support frame; 3, top plate; 4, guide slide; 5, lifting bearing frame; 6, frame door; 7, sliding frame; 8, fall protection mechanism; 801, protection shell; 802, rotating sleeve; 803, driving slot; 804, telescopic rod; 805, limit block; 806, driving column; 807, driving spring; 808, synchronous gear; 809, control rack; 810, limit block; 811, limit strip; 812, limit slot; 813, buffer spring; 9, movable pulley; 10, fixed pulley; 11, winding drive mechanism; 1101, winding box; 1102, rope threading hole; 1103, winding reel; 1104, worm gear; 1105, worm; 12, pull rope; 13, driving motor. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] See also Figure 1-11 , the present invention provides a technical solution:

[0061] A kind of energy-saving lifting platform for building construction with protective function, comprising a bottom plate 1, a support frame 2 is fixedly connected to the left and right sides of the upper end surface of the bottom plate 1, and a top plate 3 is fixedly connected to the upper end of the support frame 2; a guide slide 4 is relatively fixedly connected to the side of the support frame 2, and a lifting bearing frame 5 is arranged on the upper side of the bottom plate 1; the front end of the lifting bearing frame 5 is connected to a frame door 6 through a hinge, and the left and right end sides of the lifting bearing frame 5 are fixedly connected to the sliding frame 7, and the sliding frame 7 is slidably connected to the corresponding guide slide groove 4; the upper end surface of the sliding frame 7 is fixedly connected to a fall protection mechanism 8, and the upper end of the fall protection mechanism 8 is connected to a movable pulley 9; the middle position of the lower end surface of the top plate 3 is fixedly connected to a fixed pulley 10, and the upper end surface of the top plate 3 is fixedly connected to a winding drive mechanism 11; the winding drive mechanism 11 includes a winding box 1101: the winding box 1101 is fixedly connected to the upper end surface of the top plate 3, and a rope threading hole 110 is provided on the bottom surface of the winding box 1101 2; the interior of the winding box 1101 is connected to a winding shaft 1103 through a bearing, and a pull rope 12 is wound on the winding shaft 1103; one end of the winding shaft 1103 is keyed to a worm wheel 1104, and a worm 1105 is connected to the rotating shaft of the driving motor 13, and the worm 1105 is meshedly connected with the worm wheel 1104; when the lifting platform for construction needs to be used, the driving motor 13 is started, and the driving motor 13 rotates to drive the worm 1105 to rotate, so that The worm 1105 drives the worm wheel 1104 to rotate, and the rotation of the worm wheel 1104 drives the winding shaft 1103 to rotate, so that the winding shaft 1103 can reel in or release the pull rope 12. The transmission setting of the worm 1105 and the worm wheel 1104 plays a self-locking role on the winding shaft 1103. When the driving motor 13 suddenly loses power or fails, the winding shaft 1103 does not rotate, thereby ensuring that the lifting bearing frame 5 is in a stationary state, thereby improving the safety of the lifting platform.

[0062] A pull rope 12 is connected between the movable pulley 9 and the fixed pulley 10, and a drive motor 13 is fixedly connected to the upper end surface of the top plate 3, and the drive motor 13 is connected to the winding drive mechanism 11; one end of the pull rope 12 is fixedly connected to the upper end position of the housing of the movable pulley 9, and the pull rope 12 is wound around the fixed pulley 10, and is wound around the movable pulley 9 through the fixed pulley 10, and the other end of the pull rope 12 is wound into the winding drive mechanism 11; the pull rope 12 drives the fall protection mechanism 8 to move up and down through the movable pulley 9 and the fixed pulley 10, so that the fall protection mechanism 8 drives the lifting bearing frame 5 to move up and down through the sliding frame 7, thereby realizing the normal operation of the lifting platform for construction, and reducing the tension at one end of the pull rope 12 through the combination of the movable pulley 9 and the fixed pulley 10, so that a smaller power drive motor 13 can be used to work, thereby improving the energy-saving performance of the lifting platform.

[0063] The fall protection mechanism 8 includes a protective shell 801: the protective shell 801 is fixedly connected to the upper end position of the sliding frame 7, and the inner middle position of the protective shell 801 is connected to a rotating sleeve 802 through a bearing; the inner wall of the rotating sleeve 802 is provided with a driving groove 803, and the middle position of the upper end surface of the protective shell 801 is slidably connected to a telescopic rod 804 up and down; the lower end surface of the telescopic rod 804 is fixedly connected to a limiting block 805, and the lower side of the limiting block 805 is fixedly connected to a driving column 806, and both ends of the driving column 806 are slidably connected in the driving groove 803; the upper end of the limiting block 805 is connected to a driving spring 807, and the driving spring 807 is provided with a driving spring 807. It is placed at the lower side of the inner top surface of the protective shell 801; the side of the rotating sleeve 802 is keyed to a synchronous gear 808, and the side of the synchronous gear 808 is meshed with a control rack 809; one end of the control rack 809 is fixedly connected to a limit block 810, and the limit block 810 is slidably connected to the left and right sides of the protective shell 801; the inner part of the guide slide 4 is connected to a limit strip 811, and a limit slot 812 is provided on the side of the limit strip 811; the driving slot 803 is inclined relative to the vertical axis of the rotating sleeve 802; the structural shape of the telescopic rod 804 is a polygonal column, and the upper end surface of the protective shell 801 is provided with The corresponding polygonal holes; the control rack 809 is slidably connected to the front and rear sides of the synchronous gear 808; the limit grooves 812 are linearly and equidistantly distributed on the side of the limit bar 811, and the limit block 810 matches the size of the limit groove 812; the limit block 810 is retracted to the internal position of the two ends of the protective shell 801; when the pull rope 12 is pulled normally, the telescopic rod 804 is forced to be in an extended state, so that the limit block 810 is in a state of retracting to the inside of the protective shell 801; when the pull rope 12 breaks, the telescopic rod 804 loses the upward traction force, and the telescopic rod 804 moves downward under the action of the driving spring 807, so that the telescopic rod 804 The retracted rod 804 drives the driving column 806 to slide in the driving groove 803 of the rotating sleeve 802, and the rotating sleeve 802 is forced to rotate. The rotation of the rotating sleeve 802 drives the synchronous gear 808 connected to its side to rotate, and the rotation of the synchronous gear 808 drives the control racks 809 on the front and rear sides to slide away from each other, so that the control rack 809 drives the limit block 810 to extend out of the protective shell 801, and the limit block 810 enters the limit groove 812 on the limit bar 811, and the protective shell 801 notifies the fall to lock the lifting load frame 5, so as to protect the personnel and objects on the lifting load frame 5 and avoid safety accidents.

[0064] The limit bar 811 is connected to the inside of the guide slide groove 4 by sliding up and down, and a buffer spring 813 is connected between the lower end surface of the limit bar 811 and the inner lower end surface of the guide slide groove 4; when the lifting load frame 5 is locked, the limit bar 811 is driven to slide downward in the guide slide groove 4 under the inertia of the lifting load frame 5, and the lifting load frame 5 is buffered by the buffer spring 813 at the lower end of the limit bar 811, thereby preventing the staff from being injured by a large sudden stop impact, further improving the safety of the lifting platform for construction. The contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving lifting platform for building construction with a protective function, comprising a bottom plate (1), a support frame (2) being fixedly connected to the left and right sides of the upper end surface of the bottom plate (1), and a top plate (3) being fixedly connected to the upper end of the support frame (2), characterized in that: A guide slide groove (4) is relatively fixedly connected to the side of the support frame (2), and a lifting bearing frame (5) is arranged on the upper side of the bottom plate (1); The front end of the lifting bearing frame (5) is connected to a frame door (6) via a hinge, and sliding frames (7) are fixedly connected to the left and right side surfaces of the lifting bearing frame (5), and the sliding frames (7) are slidably connected to the corresponding guide slide grooves (4); The upper end surface of the sliding frame (7) is fixedly connected to a fall protection mechanism (8), and the upper end of the fall protection mechanism (8) is connected to a movable pulley (9); A fixed pulley (10) is fixedly connected to the middle of the lower end surface of the top plate (3), and a winding drive mechanism (11) is fixedly connected to the upper end surface of the top plate (3); A pull rope (12) is connected between the movable pulley (9) and the fixed pulley (10), and a drive motor (13) is fixedly connected to the upper end surface of the top plate (3), and the drive motor (13) is connected to the winding drive mechanism (11); The fall protection mechanism (8) comprises a protection housing (801): The protective shell (801) is fixedly connected to the upper end of the sliding frame (7), and a rotating sleeve (802) is connected to the middle position of the protective shell (801) via a bearing; The inner wall of the rotating sleeve (802) is provided with a driving groove (803), and a telescopic rod (804) is slidably connected to the middle of the upper end surface of the protective shell (801) up and down; The lower end surface of the telescopic rod (804) is fixedly connected to a limit block (805), and the lower side of the limit block (805) is fixedly connected to a driving column (806), and both ends of the driving column (806) are slidably connected in the driving groove (803); The upper end of the limit block (805) is connected to a driving spring (807), and the driving spring (807) is arranged at the lower side of the inner top surface of the protective shell (801); A synchronous gear (808) is keyed on the side of the rotating sleeve (802), and a control rack (809) is meshedly connected on the side of the synchronous gear (808); One end of the control rack (809) is fixedly connected to a limit block (810), and the limit block (810) is slidably connected to the left and right sides of the protective shell (801); The guide slide groove (4) is internally connected to a limiting strip (811), and a limiting groove (812) is provided on the side of the limiting strip (811); The limit strip (811) is slidably connected to the inside of the guide slide groove (4) up and down, and a buffer spring (813) is connected between the lower end surface of the limit strip (811) and the inner lower end surface of the guide slide groove (4).

2. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized in that: The winding drive mechanism (11) comprises a winding box (1101): The winding box (1101) is fixedly connected to the upper end surface of the top plate (3), and a rope threading hole (1102) is provided on the bottom surface of the winding box (1101); The interior of the winding box (1101) is connected to a winding shaft (1103) via a bearing, and a pull rope (12) is wound around the winding shaft (1103); One end of the winding shaft (1103) is keyed to a worm wheel (1104), and a worm (1105) is connected to the rotating shaft of the driving motor (13), and the worm (1105) is meshingly connected to the worm wheel (1104).

3. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized in that: One end of the pull rope (12) is fixedly connected to the upper end of the housing of the movable pulley (9), and the pull rope (12) is wound around the fixed pulley (10), and then passed through the fixed pulley (10) and wound around the movable pulley (9), and the other end of the pull rope (12) is wound into the winding drive mechanism (11).

4. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized in that: The driving groove (803) is arranged obliquely relative to the vertical axis of the rotating sleeve (802).

5. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized in that: The telescopic rod (804) has a structural shape of a polygonal column, and the upper end surface of the protective shell (801) is provided with a corresponding polygonal hole.

6. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized by: The control rack (809) is slidably connected to the front and rear sides of the synchronous gear (808).

7. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized by: The limiting grooves (812) are linearly and equidistantly distributed on the side of the limiting strip (811), and the limiting block (810) matches the size of the limiting grooves (812).

8. The energy-saving lifting platform for construction with protective function according to claim 1 is characterized by: The limit clamping blocks (810) are retracted to the internal positions of both ends of the protective shell (801).

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