Combined hoisting platform for electrical equipment

Abstract

The invention relates to the technical field of hoisting, in particular to a combined type hoisting platform for electrical equipment. The movable pulley hoisting device comprises a hoisting frame, a movable pulley hoisting assembly is installed on the hoisting frame, and a hoisting area is arranged under a hoisting part of the movable pulley hoisting assembly; the device further comprises a shear fork type lifter, the shear fork type lifter can convey electrical equipment to a hoisting area, and the shear fork type lifter and the power part of the movable pulley hoisting assembly form transmission fit through a linkage mechanism, so that the shear fork type lifter executes the lifting action synchronous with the hoisting part. According to the invention, falling protection can be still carried out on the electrical equipment in emergency situations such as sling fixing and unlocking or lifting rope breakage in the lifting process, so that the lifting protection is fundamentally realized, and the lifting safety is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, in particular to a combined hoisting platform for electrical equipment. Background Art

[0002] When transporting electrical equipment, since most of the electrical equipment is heavy, it is difficult to move it onto or off the transport vehicle by manual transport. Therefore, it is necessary to lift the electrical equipment with lifting equipment.

[0003] Since electrical equipment is heavy and prone to collision damage, special attention should be paid to fall protection during the hoisting process. Most of the existing hoisting anti-fall structures are recorded in the text of the Chinese patent publication number CN219507447U, which is called a kind of anti-fall hoisting mechanism. After the hanging part is hoisted to a specific height, the winding rod is limited to prevent the winding rod from rotating and driving the pull rope to move at the same time after the workpiece fails. However, in the actual hoisting process, there may be emergencies such as the sling being unfastened or the sling breaking. Obviously, it is difficult to provide stable anti-fall protection when such emergencies occur, such as the solution recorded in the cited patent, that is, it is impossible to achieve hoisting protection from the root. Therefore, there is still a risk of falling during the hoisting process, which needs to be solved urgently. Summary of the invention

[0004] In order to avoid and overcome the technical problems existing in the prior art, the present invention provides a combined lifting platform for electrical equipment, which can protect the electrical equipment from falling even when emergencies such as the lifting cable being unlocked or the lifting rope being broken occur during the lifting process, thereby achieving lifting protection at the root and effectively improving the safety of lifting.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A combined lifting platform for electrical equipment includes a lifting frame, on which a movable pulley lifting assembly is installed, and a lifting area is directly below the lifting part of the movable pulley lifting assembly; it also includes a scissor-type lifter, which can transport the electrical equipment to the lifting area and form a transmission cooperation with the power part of the movable pulley lifting assembly through a linkage mechanism, so that the scissor-type lifter performs a lifting action synchronized with the lifting part.

[0007] As a further solution of the present invention: a twisting shaft is rotatably engaged on the lifting frame, and the take-up wheel of the movable pulley lifting assembly is coaxially fixed on the twisting shaft, and the twisting shaft constitutes the power unit; a spline sleeve that rotates synchronously with the twisting shaft is installed on the twisting shaft, and the scissors-type lifter is driven by a lifter driving screw that rotatably engages on its base to perform lifting actions, and a first spline shaft that can form a coaxial plug-in transmission fit with the spline sleeve is coaxially fixed on the lifter driving screw, and the spline sleeve and the first spline shaft together constitute the linkage mechanism.

[0008] As a further solution of the present invention: the lifting frame includes a horizontally distributed cross frame and lower frames fixed at both ends of the cross frame, the cross frame and the two lower frames together enclose a U-shaped structure, and the lifting area is located on the inner side of the U-shaped structure; the movable pulley lifting assembly is arranged into two groups installed on the two lower frames, the stranding shaft is arranged parallel to the cross frame, and the take-up wheels of the two groups of movable pulley lifting assemblies are coaxially fixed on the stranding shaft.

[0009] As a further solution of the present invention: the scissors-type lifters are arranged in two groups arranged at intervals, and the lifting tables of the two groups of scissors-type lifters are both long strip structures arranged parallel to the lower rack, the lifter driving screws on the two groups of scissors-type lifters are parallel to the lower rack, and a transmission commutator for changing the transmission direction of the spline sleeve is installed on the stranded wire shaft so that the axes of the spline sleeve and the first spline shaft are parallel to each other.

[0010] As a further solution of the present invention: a telescopic adjustment rod is connected between the two groups of scissor-type lifters, and the telescopic adjustment rod is arranged parallel to the cross frame.

[0011] As a further solution of the present invention: universal wheels are installed at the bottom of the scissor-type lift.

[0012] As a further solution of the present invention: the transmission commutator includes a worm ring coaxially fixed on the outer periphery of the twisted wire shaft and a shell fixed to the cross frame, a worm wheel rotatably matched with the worm ring and meshing with the worm ring is provided on the shell, a transmission gear rotatably matched with the worm wheel and meshing with the worm wheel is provided on the shell, and a spline sleeve is coaxially fixed on the transmission gear.

[0013] As a further solution of the present invention: the cross frame is a telescopic structure with adjustable length, the stranded wire shaft is a three-section structure, and the middle section of the shaft is a second spline shaft that is slidably matched with the shafts at both ends.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. After the scissor lift is folded to the lowest height, the electrical equipment is transported to the lifting area, and a transmission is formed with the power part of the movable pulley lifting assembly through the linkage mechanism. At this time, the lifting part of the movable pulley lifting assembly is connected to the electrical equipment, and the lifting part is in a straight state. At this time, when the movable pulley lifting assembly drives the lifting part to rise or fall, it will drive the lifting table of the scissor lift to rise or fall synchronously. Therefore, during the lifting process of the electrical equipment, even if there are emergencies such as the sling fixing being unlocked or the sling breaking, the scissor lift can stably support the bottom of the electrical equipment, thereby realizing the root prevention of falling during the lifting process of the electrical equipment, and effectively improving the safety of the lifting.

[0016] 2. Two sets of movable pulley hoisting assemblies are arranged on both sides of the hoisting area, so that the hoisting force can be applied to the electrical equipment from both sides of the electrical equipment. Compared with the method of hoisting on the top of the electrical equipment, the required vertical height of the movable pulley hoisting assembly is effectively reduced. In addition, the two movable pulley hoisting assemblies are driven by the same stranded wire shaft, without the need to arrange multiple power sources for driving, and at the same time, the consistency of the lifting and lowering movement of the hoisting parts of the two movable pulley hoisting assemblies is guaranteed.

[0017] 3. The spline sleeve and the first spline shaft together form a linkage mechanism, which is not only convenient for connection but also can achieve stable synchronous drive.

[0018] 4. The cross frame is a telescopic structure with adjustable length, so it can adapt to the lifting operation of electrical equipment of different sizes. The stranding shaft is also a three-section structure, and the middle section of the shaft is a second spline shaft that slides with the shafts at both ends. The stranding shaft is not only retractable, but also can ensure the synchronous rotation of the shafts at both ends. Therefore, the winding wheels of the two sets of movable pulley lifting assemblies can be driven to rotate synchronously by rotating the stranding shaft to achieve lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a side structural schematic diagram of the scissor lifter and movable pulley hoisting assembly in the present invention.

[0021] Figure 3 It is a schematic diagram of the side section structure of the transmission commutator in the present invention.

[0022] In the figure: 10, lifting frame; 11, lower frame; 12, horizontal frame; 13, lifting area; 20, scissor-type lifter; 21, lifter drive screw; 211, first spline shaft; 30, twisting shaft; 31, transmission commutator; 311, spline shaft sleeve; 312, housing; 313, worm ring; 314, worm wheel; 315, transmission gear; 32, second spline shaft; 40, telescopic adjustment rod; 50, movable pulley lifting assembly; 51, take-up wheel. DETAILED DESCRIPTION

[0023] 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.

[0024] For ease of understanding, the specific structure and working mode of the present invention are further described below in conjunction with the accompanying drawings:

[0025] The specific structure of the present invention refers to Figure 1-3 As shown, its main structure includes a hoisting frame 10, on which a movable pulley hoisting assembly 50 is installed, and a hoisting area 13 is directly below the hoisting part of the movable pulley hoisting assembly 50; and also includes a scissor-type lifter 20, which can transport electrical equipment to the hoisting area 13, and form a transmission match with the power part of the movable pulley hoisting assembly 50 through a linkage mechanism, so that the scissor-type lifter 20 performs a lifting action synchronized with the hoisting part. In the initial state, the scissor-type lifter 20 is folded to the lowest height, after which the electrical equipment is transported to the hoisting area 13 by the scissor-type lifter 20, and a transmission match is formed with the power part of the movable pulley hoisting assembly 50 through a linkage mechanism. At this time, the hoisting part of the movable pulley hoisting assembly 50 is connected to the electrical equipment, and the hoisting part is in a straight state. At this time, when the movable pulley lifting assembly 50 drives the lifting part to rise or fall, it will drive the lifting table of the scissors-type lift 20 to rise or fall synchronously. Therefore, during the lifting process of the electrical equipment, even if an emergency occurs such as the sling being unlocked or the sling breaking, the scissors-type lift 20 can stably support the bottom of the electrical equipment, thereby achieving fundamental fall prevention during the lifting process of the electrical equipment and effectively improving the safety of the lifting.

[0026] Specifically, Figure 1 and Figure 2 As shown, the hoisting frame 10 is rotatably matched with the stranding shaft 30, and the take-up wheel 51 of the movable pulley hoisting assembly 50 is coaxially fixed on the stranding shaft 30, and the stranding shaft 30 constitutes the power unit. The stranding shaft 30 is installed with a spline shaft sleeve 311 that rotates synchronously with the stranding shaft 30. The scissor-type lifter 20 is driven by the lifter driving screw 21 that is rotatably matched on its base to perform the lifting action. The lifter driving screw 21 is coaxially fixed with a first spline shaft 211 that can form a coaxial plug-in transmission match with the spline shaft sleeve 311, and the spline shaft sleeve 311 and the first spline shaft 211 together constitute a linkage mechanism. The form of plug-in transmission match is adopted, which is not only convenient to connect, but also can achieve stable synchronous drive. In actual implementation, the arrangement of the spline sleeve 311 depends on the arrangement of the stranding shaft 30. Specifically, if the stranding shaft 30 is arranged parallel to the elevator drive screw 21, the spline sleeve 311 can be coaxially fixed on the stranding shaft 30. If the stranding shaft 30 is arranged vertically or perpendicular to the elevator drive screw 21, a transmission commutator 31 is required to change the transmission direction.

[0027] Further, such as Figure 1As shown, the hoisting frame 10 includes a horizontally distributed cross frame 12 and a lower frame 11 fixed at both ends of the cross frame 12. The cross frame 12 and the two lower frames 11 are enclosed together to form a U-shaped structure, and the hoisting area 13 is located inside the U-shaped structure; the movable pulley hoisting assembly 50 is set as two groups installed on the two lower frames 11, the stranding shaft 30 is arranged parallel to the cross frame 12, and the take-up wheels 51 of the two groups of movable pulley hoisting assemblies 50 are coaxially fixed on the stranding shaft 30. The arrangement of the two groups of movable pulley hoisting assemblies 50 distributed on both sides of the hoisting area 13 can apply a hoisting force to the electrical equipment from both sides of the electrical equipment. Compared with the method of hoisting on the top of the electrical equipment, the required vertical height of the movable pulley hoisting assembly 50 is effectively reduced. In addition, the two movable pulley hoisting assemblies 50 are driven by the same stranding shaft 30, and there is no need to arrange multiple power sources for driving, and at the same time, the consistency of the lifting and lowering movement of the hoisting parts of the two movable pulley hoisting assemblies 50 is also guaranteed.

[0028] On the basis of the above, if Figure 1 As shown, the scissor lifters 20 are arranged in two groups arranged at intervals, and the lifting platforms of the two groups of scissor lifters 20 are long strip structures arranged parallel to the lower rack 11, the lifter drive screws 21 on the two groups of scissor lifters 20 are parallel to the lower rack 11, and the twisted wire shaft 30 is equipped with a transmission commutator 31 for changing the transmission direction of the spline sleeve 311, so that the axes of the spline sleeve 311 and the first spline shaft 211 are parallel to each other. The two groups of scissor lifters 20 are used to stably support the bottom sides of the electrical equipment, so that the lifting platform of the scissor lifter 20 does not need to be a large-area structure, which reduces the space occupied by the scissor lifter 20. In this embodiment, since the twisted wire shaft 30 needs to drive two movable pulley lifting assemblies 50 to move synchronously, the twisted wire shaft 30 is arranged parallel to the horizontal frame 12, and the lifting platform of the scissors-type lifter 20 is a long strip structure arranged parallel to the lower frame 11, that is, the twisted wire shaft 30 is arranged perpendicular to the lifter driving screw 21, and a transmission commutator 31 is required to change the transmission direction.

[0029] Specifically, Figure 3 As shown, the transmission commutator 31 includes a worm ring 313 coaxially fixed to the outer periphery of the stranding shaft 30 and a housing 312 fixed to the cross frame 12, a worm wheel 314 meshing with the worm ring 313 is rotatably matched on the housing 312, a transmission gear 315 meshing with the worm wheel 314 is rotatably matched on the housing 312, and a spline shaft sleeve 311 is coaxially fixed on the transmission gear 315. When in use, the worm wheel 314 is driven to rotate by the worm ring 313, and the meshing transmission of the worm wheel 314 and the transmission gear 315 is utilized to realize the driving of the spline shaft sleeve 311. Of course, in actual implementation, the conversion of the transmission direction can also be realized by the bevel gear ring structure in the prior art.

[0030] On the basis of the above, if Figure 1 As shown, a telescopic adjustment rod 40 is connected between the two groups of scissor-type lifters 20, and the telescopic adjustment rod 40 is arranged parallel to the cross frame 12, which not only realizes the connection between the two groups of scissor-type lifters 20, but also ensures the synchronous movement of the two groups of scissor-type lifters 20.

[0031] Further, such as Figure 2 As shown, universal wheels are installed at the bottom of the scissor-type lift 20 to facilitate the horizontal movement of the scissor-type lift 20.

[0032] On the basis of the above, if Figure 1 As shown, the cross frame 12 is a telescopic structure with adjustable length, so as to adapt to the lifting operation of electrical equipment of different sizes. The stranding shaft 30 is a three-section structure, and the middle section of the shaft is a second spline shaft 32 that slides with the shafts at both ends. The stranding shaft 30 is not only telescopic, but also ensures that the shafts at both ends rotate synchronously, so that the winding wheels 51 of the two sets of movable pulley lifting assemblies 50 can be driven to rotate synchronously by rotating the stranding shaft 30 to achieve lifting.

[0033] Of course, it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0035] The techniques, shapes, and structural parts not described in detail in the present invention are all well-known techniques.

Claims

1. A combined hoisting platform for electrical equipment, characterized in that: The invention comprises a lifting frame (10), on which a movable pulley lifting assembly (50) is installed, and a lifting area (13) is located directly below the lifting part of the movable pulley lifting assembly (50); and a scissor-type lifter (20) is provided, and the scissor-type lifter (20) can transport the electrical equipment to the lifting area (13), and forms a transmission cooperation with the power part of the movable pulley lifting assembly (50) through a linkage mechanism, so that the scissor-type lifter (20) performs a lifting action synchronized with the lifting part.

2. The combined hoisting platform for electrical equipment according to claim 1, characterized in that: The hoisting frame (10) is rotatably engaged with a stranded wire shaft (30), and the take-up wheel (51) of the movable pulley hoisting assembly (50) is coaxially fixed on the stranded wire shaft (30), and the stranded wire shaft (30) constitutes the power unit; the stranded wire shaft (30) is installed with a spline shaft sleeve (311) that rotates synchronously with the stranded wire shaft (30), and the scissor-type lifter (20) is driven by a lifter driving screw (21) that is rotatably engaged with the base thereof to perform a lifting action, and a first spline shaft (211) that can form a coaxial plug-in transmission engagement with the spline shaft sleeve (311) is coaxially fixed on the lifter driving screw (21), and the spline shaft sleeve (311) and the first spline shaft (211) together constitute the linkage mechanism.

3. The combined hoisting platform for electrical equipment according to claim 2, characterized in that: The hoisting frame (10) comprises a horizontally distributed cross frame (12) and lower frames (11) fixed at both ends of the cross frame (12), the cross frame (12) and the two lower frames (11) together enclose a U-shaped structure, and the hoisting area (13) is located inside the U-shaped structure; the movable pulley hoisting assembly (50) is arranged as two groups installed on the two lower frames (11), the stranding shaft (30) is arranged parallel to the cross frame (12), and the take-up wheels (51) of the two groups of movable pulley hoisting assemblies (50) are coaxially fixed on the stranding shaft (30).

4. The combined hoisting platform for electrical equipment according to claim 3, characterized in that: The scissor-type lifters (20) are arranged in two groups arranged at intervals, and the lifting platforms of the two groups of scissor-type lifters (20) are both long strip structures arranged parallel to the lower frame (11), the lifter driving screws (21) on the two groups of scissor-type lifters (20) are parallel to the lower frame (11), and a transmission commutator (31) for changing the transmission direction of the spline sleeve (311) is installed on the stranded wire shaft (30), so that the axes of the spline sleeve (311) and the first spline shaft (211) are parallel to each other.

5. The combined hoisting platform for electrical equipment according to claim 4, characterized in that: A telescopic adjustment rod (40) is connected between the two groups of scissor-type lifters (20), and the telescopic adjustment rod (40) is arranged parallel to the cross frame (12).

6. An electrical equipment combined hoisting platform according to any one of claims 1 to 5, characterized in that: Universal wheels are installed at the bottom of the scissor lift (20).

7. The combined hoisting platform for electrical equipment according to claim 4, characterized in that: The transmission commutator (31) comprises a worm ring (313) coaxially fixed to the outer periphery of the stranded wire shaft (30) and a housing (312) fixed to the cross frame (12); a worm wheel (314) rotatably engaged with the worm ring (313) and meshingly driven on the housing (312); a transmission gear (315) rotatably engaged with the worm wheel (314) and meshingly driven on the housing (312); and a spline shaft sleeve (311) is coaxially fixed to the transmission gear (315).

8. The combined hoisting platform for electrical equipment according to claim 5, characterized in that: The cross frame (12) is a telescopic structure with adjustable length, the twisted wire shaft (30) is a three-section structure, and the middle section of the shaft is a second spline shaft (32) that is slidably matched with the shafts at both ends.

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