A lifting machinery with a detachable auxiliary hook trolley and a lifting method

Abstract

The present invention discloses a lifting machinery with a detachable auxiliary hook trolley and a lifting method, wherein the main hook trolley is connected to the auxiliary hook trolley through a connecting assembly; a winding assembly and a variable bracket assembly are arranged on a bottom plate of the trolley, and the variable bracket assembly has a first state and a second state, in the first state, an electric push rod device has a first extension, and an angle between an axial direction of the multi-stage pulley rod and the first direction is greater than 110 degrees, and in the second state, the electric push rod device has a second extension, and an angle between an axial direction of the multi-stage pulley rod and the first direction is less than 45 degrees, and the first extension is less than the second extension; the lifting machinery of the present invention can reduce the manufacturing cost and assembly difficulty of the entire lifting machinery, and by adjusting the angle between the multi-stage pulley rod and the single-stage pulley rod and the orientation relative to the bottom plate of the trolley, it is ensured that the lifting range of the multi-stage pulley rod extends to components close to the main hook trolley, which greatly facilitates the inspection and maintenance of the lifting equipment.

Description

Technical Field

[0001] The invention relates to the field of lifting machinery, in particular to a lifting machinery with a detachable auxiliary hook trolley and a lifting method. Background Art

[0002] Traditional lifting machinery is mainly used for loading and unloading of bulk materials, containers, and piece goods, and is used in various ports, factories, warehouses and other occasions. For gantry lifting machinery, it usually has a main hook and an auxiliary hook part, and the main hook and auxiliary hook of the existing equipment use the same mounting frame. On the one hand, the overall manufacturing and assembly are difficult. On the other hand, due to the large lifting weight of the main hook, the motor, drum device, reducer and other components matched thereon are large in size and heavy in weight. The inspection and maintenance of the above-mentioned components sometimes need to be completed on the ground, and the corresponding components need to be hoisted to the ground. The existing hoisting method mainly completes the hoisting of the above-mentioned components through other lifting machinery, and some lifting equipment is at a high height and is difficult to lift. Therefore, there is an urgent need for a lifting machinery that can conveniently lift some components of the main hook to solve the problems existing in the prior art. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention proposes a lifting machinery with a detachable auxiliary hook trolley and a lifting method, and adopts the following technical solutions.

[0004] A lifting machinery with a detachable auxiliary hook trolley, the lifting machinery comprises a main hook trolley and an auxiliary hook trolley; the auxiliary hook trolley has a trolley bottom plate, the trolley bottom plate is slidably connected to the track of the lifting machinery through rollers, a connecting assembly is provided at the end of the trolley bottom plate in a first direction, the main hook trolley is connected to the auxiliary hook trolley through the connecting assembly; a winding assembly and a variable bracket assembly are provided on the trolley bottom plate; the winding assembly is connected to the trolley bottom plate through a second slide rail assembly, and the variable bracket assembly is connected to the trolley bottom plate through the first slide rail assembly; the variable bracket assembly comprises a bracket base, a single-stage pulley rod and a multi-stage pulley rod, one end of the single-stage pulley rod and the multi-stage pulley rod are respectively connected to the bracket The base is hinged, and the other end of the single-stage pulley rod and the multi-stage pulley rod has a wire rope wheel, and an electric push rod device is hinged between the single-stage pulley rod and the multi-stage pulley rod at the end away from the bracket base; wherein, the first direction is the direction of the auxiliary hook trolley along the track toward the main hook trolley, and the variable bracket assembly has a first state and a second state. In the first state, the electric push rod device has a first extension amount, and the angle between the axial direction of the multi-stage pulley rod and the first direction is greater than 110 degrees. In the second state, the electric push rod device has a second extension amount, and the angle between the axial direction of the multi-stage pulley rod and the first direction is less than 45 degrees, and the first extension amount is less than the second extension amount.

[0005] Furthermore, the connecting assembly includes connecting rod 1 and connecting rod 2. In a first state, connecting rod 1 is connected to the main hook trolley, and in a second state, connecting rod 2 is connected to the main hook trolley, wherein the length of connecting rod 1 is less than one third of the length of connecting rod 2.

[0006] Furthermore, the first slide rail assembly is arranged along the second direction, and the second slide rail assembly is arranged along the first direction, the second direction is perpendicular to the first direction, and when the variable bracket assembly slides along the first slide rail assembly, the wire rope wheels at the ends of the single-stage pulley rod and the multi-stage pulley rod are rotatable relative to the axes of the single-stage pulley rod and the multi-stage pulley rod, wherein, in the first state, the projection of the winding assembly in the height direction is within the range of the trolley bottom plate, and in the second state, the winding assembly moves along the second slide rail assembly in a direction opposite to the first direction.

[0007] Furthermore, the bracket base and the variable bracket assembly also include a connecting plate, two protrusions are provided on the connecting plate, and a support seat is provided on the bracket base. In the first state, the single-stage pulley rod is in contact with the support seat, and both the single-stage pulley rod and the support seat are provided with mounting grooves, and the protrusions of the connecting plate respectively cooperate with the mounting grooves provided on the single-stage pulley rod and the support seat.

[0008] Furthermore, the multi-stage pulley rod includes a slide rod base, a first slide rod and a second slide rod, one end of the slide rod base has a hinge structure, the first slide rod is slidably arranged in the other end of the slide rod base, and the second slide rod is slidably arranged in the protruding end of the first slide rod.

[0009] Furthermore, the multi-stage pulley rod includes a first-stage telescopic structure and a second-stage telescopic structure, the first-stage telescopic structure includes a first sliding rod and a sliding rod base, the second-stage telescopic structure includes a second sliding rod and the first sliding rod, the first-stage telescopic structure adopts a hydraulic cylinder or an electric push rod, the second-stage telescopic structure is a slide rail structure without driving force, the second sliding rod has a slide rail locking element, and a hinge structure is arranged on the outside of one end of the second sliding rod close to the first sliding rod, the outer side of the single-stage pulley rod is arranged with a hinge structure, and the electric push rod device is respectively connected to the single-stage pulley rod and the second sliding rod through the hinge structure.

[0010] Furthermore, the winding assembly has a motor, the motor has a motor base, and the motor base is rotatably connected to the bottom plate of the trolley, wherein in the second state, a counterweight is provided on the bottom plate of the trolley.

[0011] Furthermore, the connecting rod 1 is a telescopic structure, the connecting rod 2 is a fixed-length structure, the two sides of the trolley bottom plate are rotatably provided with connecting rod 1 and connecting rod 2, and the side of the trolley bottom plate is also provided with a support rod.

[0012] A lifting method is also provided, which uses the aforementioned lifting machinery with a detachable auxiliary hook trolley. The lifting method is specifically used to lift parts on the main hook trolley, and the lifting method includes:

[0013] In the first state, the connecting rod 2 is separated from the main hook trolley, the main hook trolley is started to move a certain distance in the first direction, and the connecting rod 1 is connected to the main hook trolley.

[0014] Remove the connecting plate of the variable bracket assembly, and slowly control the single-stage pulley rod to move downward until it contacts the top surface of the support seat.

[0015] The slide rail locking element of the second slide bar is unlocked, the first slide bar is not started, the electric push rod device is started, and the electric push rod device drives the second slide bar to extend a first distance to lock the hinge structure at the connection between the electric push rod device and the single-stage pulley rod.

[0016] The first slide bar is controlled to extend a second distance, so that the wire rope wheel at the end of the second slide bar is in contact with the wire rope, and the wire rope wheel at the end of the single-stage pulley rod is ensured to be out of contact with the wire rope, thereby increasing the overlapping length of the first slide bar and the second slide bar.

[0017] Adjust the slide rail locking element of the second slide rod to a locked state.

[0018] The second slide rail assembly of the winding assembly is started, the motor base is pushed out a third distance in a direction opposite to the first direction, and a counterweight is added to the motor base.

[0019] Furthermore, before adjusting the position of the winding assembly, start the first slide rail assembly, adjust the position of the variable bracket assembly in the second direction, and simultaneously adjust the angle of the motor base on the trolley bottom plate to ensure that the wire rope is effectively clamped in the wire rope wheel at the end of the second slide rod.

[0020] Beneficial effects of the present invention: the hoisting machinery of the present invention designs the auxiliary hook part to be a structure that is separable from the main hook part, which can reduce the manufacturing cost and assembly difficulty of the entire hoisting machinery; at the same time, the hoisting machinery of the present invention has a first state and a second state. In the first state, the main hook trolley and the auxiliary hook trolley are connected by a shorter connecting rod with a smaller spacing. At this time, the auxiliary hook trolley is only used to hoist ground objects in cooperation with the adjustment of the variable bracket assembly. In the second state, the main hook trolley and the auxiliary hook trolley are connected by a longer connecting rod to maintain a larger spacing. At this time, the main hook trolley can be adjusted The parts on the hook trolley that need to be inspected and repaired can be hoisted, so there is no need to use other lifting machinery to lift the parts on the main hook trolley; the design of the variable bracket assembly of the present invention effectively ensures that the auxiliary hook trolley can lift the objects on the main hook trolley, and by adjusting the angle between the multi-stage pulley rod and the single-stage pulley rod and the orientation relative to the trolley bottom plate, it is ensured that the lifting range of the multi-stage pulley rod extends to close to the main hook trolley; at the same time, the variable bracket assembly and the winding assembly can both adjust their positions on the trolley bottom plate to adapt to different lifting ranges and improve stability during the lifting process.

[0021] Other technical effects of the present invention are further described in the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0023] Figure 1 The overall structure diagram of the lifting machine of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 A front view showing the overall structure of the lifting machine of the present invention;

[0025] Figure 3 A front view showing the auxiliary hook trolley of the hoisting machine of the present invention in a first state;

[0026] Figure 4 A schematic diagram showing the overall structure of the auxiliary hook trolley of the hoisting machinery of the present invention in a first state;

[0027] Figure 5 A schematic diagram showing the structure of a connecting plate of a variable bracket assembly of the present invention;

[0028] Figure 6 The schematic diagram of the overall structure of the auxiliary hook trolley of the hoisting machinery of the present invention in the second state Figure 1 ;

[0029] Figure 7 The schematic diagram of the overall structure of the auxiliary hook trolley of the hoisting machinery of the present invention in the second state Figure 2 ;

[0030] Figure 8 express Figure 7 The enlarged schematic diagram of point A in the middle;

[0031] Fig. 9 A schematic diagram showing a partial structure of the lifting machinery of the present invention in a second state;

[0032] Fig.10 A schematic structural diagram showing a multi-stage pulley rod of a variable support assembly of the present invention.

[0033] Description of reference numerals:

[0034] 100-lifting machinery; 110-track; 200-main hook trolley; 300-auxiliary hook trolley; 310-trolley bottom plate; 320-winding assembly; 321-motor base; 322-motor; 323-second slide rail assembly; 324-counterweight; 330-variable bracket assembly; 331-bracket base; 3311-support seat; 332-first slide rail assembly; 333-single-stage pulley rod; 3331-mounting groove; 334-electric push rod device; 335-multi-stage pulley rod; 3351-slide rod base; 3352-first slide rod; 3353-second slide rod; 3354-pulley; 340-connecting assembly; 341-connecting rod one; 342-connecting rod two; 343-support rod; 350-control cabinet; 360-connecting plate; 361-protrusion. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Therefore, 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.

[0036] It should be noted that all the connection relationships mentioned in the text do not simply refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation; the embodiments of the present invention and the features and technical solutions in the embodiments can be combined with each other without conflict. In addition, the terms "first", "second", "upper end", "lower end", "inner end", "outer end", etc. are only used to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0037] A lifting machine with a detachable auxiliary hook trolley, referring to Figure 1-Figure 10As shown, the lifting machinery 100 includes a main hook trolley 200 and an auxiliary hook trolley 300; the auxiliary hook trolley 300 has a trolley bottom plate 310, and the trolley bottom plate 310 is slidably connected to the track 110 of the lifting machinery 100 through rollers. The lifting machinery 100 has double tracks 110, and a connecting component 340 is provided at the end of the trolley bottom plate 310 in the first direction, and the main hook trolley 200 is connected to the auxiliary hook trolley 300 through the connecting component 340; a winding component 320 and a variable bracket component 330 are provided on the trolley bottom plate 310, and the variable bracket component 330 mainly changes its shape according to the lifting requirements of different scenarios; the winding component 320 is used to retract and release the wire rope of the auxiliary hook trolley 300 to lift the target object, and the winding component 320 is connected to the target object through the second slide rail component 3 23 is connected to the trolley bottom plate 310, and the variable bracket assembly 330 is connected to the trolley bottom plate 310 through a first slide rail assembly 332; the variable bracket assembly 330 includes a bracket base 331, a single-stage pulley rod 333 and a multi-stage pulley rod 335, one end of the single-stage pulley rod 333 and the multi-stage pulley rod 335 are respectively hinged to the bracket base 331 through a hinged base, and the other end of the single-stage pulley rod 333 and the multi-stage pulley rod 335 is provided with a wire rope wheel 3354, and an electric push rod device 334 is hinged between the single-stage pulley rod 333 and the multi-stage pulley rod 335 at one end away from the bracket base 331; wherein, the first direction is the direction of the auxiliary hook trolley 300 along the track 110 toward the main hook trolley 200, and the variable bracket assembly 330 has a first state and a second state.

[0038] like Figure 3 As shown, in the first state, the auxiliary hook trolley 300 is used to lift objects on the ground, the electric push rod device 334 has a first extension amount, the angle range between the axial direction of the multi-stage pulley rod 335 and the first direction is 100 degrees to 120 degrees, preferably 110 degrees, the angle range between the axial direction of the single-stage pulley rod 333 and the first direction is 60 degrees to 65 degrees, preferably 60 degrees, and the axial direction of the multi-stage pulley rod 335 is the length extension direction.

[0039] like Fig. 9 As shown, in the second state, the auxiliary hook trolley 300 is used to lift the components on the main hook trolley 200, the electric push rod device 334 has a second extension amount, the angle between the axial direction of the multi-stage pulley rod 335 and the first direction is in the range of 40 degrees to 45 degrees, preferably 45 degrees, and the axial direction of the single-stage pulley rod 333 coincides with the first direction, that is, the single-stage pulley rod 333 is in a completely horizontal state.

[0040] Among them, the first extension amount is smaller than the second extension amount; specifically, the selection of the above-mentioned angles can be specifically set according to the length of the electric push rod device 334, the length of the single-stage pulley rod 333 and the length of the multi-stage pulley rod 335 and the specific lifting range.

[0041] Combination Figure 3 , Figure 7 As shown, the multi-stage pulley rod 335 of the variable bracket assembly 330 is in a retracted state as a whole in the first state, and the electric push rod device 334 only needs to extend a small amount while maintaining the angle of the multi-stage pulley rod 335 and the single-stage pulley rod 333. Fig. 9 As shown, the multi-stage pulley rod 335 must be in an extended state as a whole to lift the components on the main hook trolley 200. At this time, the electric push rod device 334 needs to extend a larger amount.

[0042] Furthermore, the first slide rail assembly 332 is driven by a screw rod and a guide rail, and the second slide rail assembly 323 is driven by a screw rod and a guide rail. The screw rod and guide rail driving method is the existing technology, specifically using a T-shaped guide rail, and the slider is clamped on both sides of the T-shaped guide rail to ensure that the slider will not be separated from the guide rail. A travel stop structure is provided at the end of the guide rail, and the driving method is motor driven; specifically, the slider and the transmission nut of the first slide rail assembly 332 are arranged at the bottom of the bracket base 331, and the slider and the transmission nut of the second slide rail assembly 323 are arranged at the bottom of the motor base 321.

[0043] Further, such as Figure 6 As shown, the connecting assembly 340 includes a connecting rod 1 341 and a connecting rod 2 342. In the first state, the connecting rod 1 341 is connected to the main hook trolley 200, and in the second state, the connecting rod 2 342 is connected to the main hook trolley 200, wherein the length of the connecting rod 1 341 is less than one third of the length of the connecting rod 2 342. In this way, in the first state, the distance between the main hook trolley 200 and the auxiliary hook trolley 300 can be reduced to ensure that the wire rope does not interfere with the main hook trolley 200 and the auxiliary hook trolley 300. In the second state, the main hook trolley 200 and the auxiliary hook trolley 300 can ensure that the main hook trolley 200 does not interfere with the main hook trolley 200 and the auxiliary hook trolley 300 during the lifting of the components.

[0044] Furthermore, the first slide rail assembly 332 is arranged along the second direction, and the second slide rail assembly 323 is arranged along the first direction, and the second direction is perpendicular to the first direction. When the variable bracket assembly 330 slides along the first slide rail assembly 332, the wire rope pulley 3354 at the end of the single-stage pulley rod 333 and the multi-stage pulley rod 335 is rotatable relative to the axis of the single-stage pulley rod 333 and the multi-stage pulley rod 335, wherein, in the first state, the projection of the winding assembly 320 in the height direction is within the range of the trolley bottom plate 310, that is, the initial position of the winding assembly 320 is a retracted state relative to the trolley bottom plate 310, and the second slide rail assembly 323 does not push the winding assembly 320 in a direction opposite to the first direction; and in the second state, the winding assembly 320 moves along the second slide rail assembly 323 in a direction opposite to the first direction, so as to ensure the balance of the center of gravity of the entire auxiliary hook trolley 300 after the lifting point of the variable bracket assembly 330 is changed, thereby ensuring safe and reliable lifting.

[0045] Further, such as Figure 3 , Figure 5 , Figure 8 As shown, the support base 331, the variable support assembly 330 also includes a connecting plate 360, the connecting plate 360 ​​is provided with two protrusions 361, the support base 331 is provided with a support seat 3311, in the first state, the single-stage pulley rod 333 abuts against the upper surface of the support seat 3311, that is, the support seat 3311 serves as the supporting point of the single-stage pulley rod 333, and the single-stage pulley rod 333 and the support seat 3311 are both provided with a mounting groove 3331; the protrusion of the connecting plate 360 361 cooperates with the mounting groove 3331 set in the single-stage pulley rod 333 and the support seat 3311 respectively. By designing a certain length of the connecting plate 360 ​​in advance, it can ensure that the single-stage pulley rod 333 has better support in the first state, and can improve the stability of the entire variable bracket assembly 330 during operation; specifically, the mounting groove 3331 on the single-stage pulley rod 333 is set on the side of the single-stage pulley rod 333, and the opening of the mounting groove 3331 is parallel to the upper and lower surfaces of the single-stage pulley rod 333; at the same time, specifically combined with Figure 5 , each end of the connecting plate 360 ​​has a protrusion 361, the upper protrusion 361 cooperates with the mounting groove 3331 of the single-stage pulley rod 333, and the lower protrusion 361 cooperates with the mounting groove 3331 of the support seat 3311, and the upper protrusion 361 is inclined, and the specific angle is the same as the angle of the variable bracket assembly 330 in the first state; in the second state, in order to ensure that the single-stage pulley rod 333 does not shake during work, a short connecting piece (not shown in the figure) can be provided, on which two parallel protrusions are provided, which are used to firmly connect the single-stage pulley rod 333 and the support seat 3311 together.

[0046] Further, combined with Figure 7 , Figure 8 One end of the single-stage pulley rod 333 is hinged to the support base 331 through a hinge base, and one end of the multi-stage pulley rod 335 is hinged to the support base 331 through a hinge base. The specific hinge method is the hinge axis method of the prior art, wherein there is a distance D between the hinge axes of the two hinge bases along the first direction, and the distance D is set to be greater than 1.5 times the sum of the thicknesses of the single-stage pulley rod 333 and the multi-stage pulley rod 335 in the first direction. The purpose of this setting is to ensure that the support base 331, the single-stage pulley rod 333, the electric push rod device 334 and the multi-stage pulley rod 335 form a four-bar linkage mechanism to realize the transformation of different states of the variable support assembly 330, which is used to cooperate with the lifting machinery 100 to complete various lifting tasks.

[0047] Further, such as Figure 6 , Figure 8 , Fig.10 As shown, the multi-stage pulley rod includes a first-stage telescopic structure and a second-stage telescopic structure, the multi-stage pulley rod 335 includes a slide bar base 3351, a first slide bar 3352 and a second slide bar 3353, one end of the slide bar base 3351 has a hinge structure, which is connected to the hinge base of the trolley bottom plate 310, the first slide bar 3352 is slidably set in the other end of the slide bar base 3351, that is, the first slide bar 3352 is sleeved in the slide bar base 3351, the first-stage telescopic structure includes the first slide bar 3352 and the slide bar base 3351, the other end of the first slide bar 3352 has a accommodating cavity, and one end of the second slide bar 3353 is sleeved in the accommodating cavity in the first slide bar 3352 The second-stage telescopic structure comprises a second slide bar 3353 and a first slide bar 3352; the first slide bar 3352 serves as an intermediate component between the first-stage telescopic structure and the second-stage telescopic structure; the second slide bar 3353 has a wire rope pulley 3354 at one end and a sliding portion at the other end, wherein the sliding portion is specifically a slide rail, and the sliding portion is slidably arranged in the extended end of the first slide bar 3352, that is, the end of the first slide bar 3352 is provided with a slide groove cooperating with the slide rail, and the length of the sliding portion is slightly shorter than that of the first slide bar 3352, and an anti-slip device is arranged between the second slide bar 3353 and the first slide bar 3352 to prevent the second slide bar 3353 from escaping from the first slide bar 3352 due to excessive extension.

[0048] Furthermore, the first slide bar 3352 and the slide bar base 3351 of the first-stage telescopic structure adopt a hydraulic cylinder or an electric push rod, which has a locking function after moving to the target position. The hydraulic cylinder or the electric push rod is a prior art, that is, the first slide bar 3352 is the extension rod of the hydraulic cylinder or the electric push rod, and the slide bar base 3351 is the power part of the hydraulic cylinder or the electric push rod. The optimization performed by the present invention is to set the first slide bar 3352 as a cavity structure, that is, to form a slide groove for accommodating the slide rail of the second slide bar 3353. Specifically, the second slide bar 3353 is a slide rail structure without driving force, that is, the movement of the second slide bar 3353 requires other components to provide driving force for it; The second slide bar 3353 has a slide rail locking element, and a hinge structure is arranged on the outside of one end of the second slide bar 3353 close to the first slide bar 3352. The outer side of the single-stage pulley rod 333 is arranged with a hinge structure, and the electric push rod device 334 is respectively connected to the single-stage pulley rod 333 and the second slide bar 3353 through the hinge structure. Specifically, the telescopic movement of the second slide bar 3353 mainly relies on the telescopic movement of the electric push rod device 334 hinged thereto to drive the second slide bar 3353 to be telescopic, and whether it can be driven by the electric push rod device 334 is controlled by locking and opening the slide rail locking element. The electric push rod device 334 is a component device of the prior art and does not need to be improved.

[0049] Furthermore, the winding assembly 320 has a motor 322, and the motor 322 has a motor base 321. Since in the second state, the variable bracket assembly 330 needs to hoist components at different positions on the main hook trolley 200, that is, components arranged in the second direction, it is necessary to adjust its position on the trolley bottom plate 310 through the first slide rail assembly 332. At this time, the wire rope wheel 3354 on the top of the variable bracket assembly 330 and the wire rope wound on the wire rope drum of the winding assembly 320 will rub against the side of the wire rope drum due to the change in angle and cause In the present case of being detached from the wire rope wheel 3354, it is necessary to rotationally connect the motor base 321 and the trolley bottom plate 310, which can be achieved by setting a rotating shaft between the motor base 321 and the trolley bottom plate 310, and locking the rotating shaft after the adjustment is completed to prevent the motor base 321 from rotating relative to the trolley bottom plate 310; wherein, in the second state, a counterweight 324 is provided on the trolley bottom plate 310, which is mainly used to adjust the center of gravity of the entire auxiliary hook trolley 300 to prevent the auxiliary hook trolley 300 from overturning during lifting due to the change in shape of the variable bracket assembly 330.

[0050] Furthermore, the connecting rod 1 341 is a retractable structure, which can be specifically a hydraulic cylinder, a pneumatic cylinder, or an electric push rod, which is used to adjust the distance between the main hook trolley 200 and the auxiliary hook trolley 300, and the connecting rod 2 342 is a fixed-length structure. The two sides of the trolley bottom plate 310 are rotatably provided with connecting rod 1 341 and connecting rod 2 342. The purpose of the rotation is to facilitate the adjustment of the connection with the main hook trolley 200. Correspondingly, a docking structure is provided at the edge of the main hook trolley 200, which can be specifically a positioning shaft, a positioning ring, etc., and the ends of the connecting rod 1 341 and the connecting rod 2 342 are provided with a connecting hook structure for connecting with the positioning shaft or the positioning ring; the side of the trolley bottom plate 310 is also provided with a support rod 343. When one of the connecting rod 1 341 or the connecting rod 2 342 is connected to the main hook trolley 200, the other connecting rod 1 341 or the connecting rod 2 342 is supported on the support rod 343 after rotation.

[0051] A hoisting method is also provided, which uses the aforementioned lifting machinery 100 with a detachable auxiliary hook trolley. The hoisting method is specifically used to lift parts on the main hook trolley 200. The auxiliary hook trolley 300 also has a control cabinet 350 for controlling the movement of the first slide rail assembly 332, the second slide rail assembly 323, the motor 322 of the winding assembly 320, the electric push rod device 334, and the multi-stage pulley rod 335. The hoisting method includes:

[0052] In the first state, the connecting rod 2 342 is separated from the main hook trolley 200, the main hook trolley 200 is started to move a distance in the first direction, and the connecting rod 1 341 is connected to the main hook trolley 200 to provide upper and lower space for lifting components on the main hook trolley 200.

[0053] The wire rope drum of the winding assembly 320 is reversely released to release one end of the wire rope to compensate for the increased stroke caused by the movement of the winding assembly 320 along the second slide rail assembly 323.

[0054] Remove the connecting plate 360 ​​of the variable bracket assembly 330, and slowly control the single-stage pulley rod 333 to move downward until it contacts the top surface of the support seat 3311. Specifically, the movement of the single-stage pulley rod 333 can be controlled manually. At this time, since the electric push rod device 334 has not adjusted the extension amount and the slide rail locking element of the second slide rod 3353 is still in a locked state, the multi-stage pulley rod 335 rotates as a whole around the hinged base with the single-stage pulley rod 333.

[0055] The slide rail locking element of the second slide bar 3353 is unlocked so that the first slide bar 3352 does not start the telescopic action, and then the electric push rod device 334 is started. The electric push rod device 334 drives the freely slidable second slide bar 3353 to extend a first distance. When it is adjusted to the target, the hinge structure of the electric push rod device 334 and the single-stage pulley rod 333 is locked. Specifically, the wire rope wheel 3354 of the second slide bar 3353 is extended until the projection along the height direction is close to the main hook trolley 200, wherein the hinge axis of the electric push rod device 334 and the single-stage pulley rod 333 is a bolt assembly. After adjusting into place, tighten the nut on the bolt to lock the position of the electric push rod device 334 and the single-stage pulley rod 333 so that it cannot rotate, thereby preparing for the subsequent adjustment of the multi-stage pulley rod 335.

[0056] The first slide bar 3352 is controlled to extend a second distance, so that the wire rope pulley 3354 at the end of the second slide bar 3353 is in contact with the wire rope, ensuring that the wire rope pulley 3354 at the end of the single-stage pulley rod 333 is out of contact with the wire rope. In this way, the overlapping length of the first slide bar 3352 and the second slide bar 3353 can be increased, ensuring that more part of the first slide bar 3352 is sleeved on the second slide bar 3353, thereby enhancing the support for the second slide bar 3353 and thus the working stability of the second-stage telescopic structure.

[0057] The slide rail locking element of the second slide bar 3353 is adjusted to a locked state, thereby completing the state adjustment of the variable bracket assembly 330 .

[0058] The second slide rail assembly 323 of the winding assembly 320 is started, the motor base 321 is pushed out a third distance in a direction opposite to the first direction, and a counterweight 324 is added to the motor base 321 to improve the working stability of the auxiliary hook trolley 300 in the second state.

[0059] Furthermore, before adjusting the position of the winding assembly 320, start the first slide rail assembly 332, adjust the position of the variable bracket assembly 330 in the second direction, and at the same time adjust the angle of the motor base 321 on the trolley bottom plate 310 to ensure that the wire rope is effectively clamped in the wire rope wheel 3354 at the end of the second slide bar 3353. At this time, the lifting hook of the auxiliary hook trolley 300 can move directly to the edge position of the main hook trolley 200, and can lift the components on the main hook trolley 200 without moving the components of the main hook trolley 200 to the bottom of the lifting hook, thereby improving the convenience of the entire lifting.

[0060] Finally, the extension length of the wire rope is adjusted by operating the winding assembly 320, and the lifting hook is retracted to the top of the trolley bottom plate 310 to lift the components on the main hook trolley 200.

[0061] The hoisting machinery of the present invention designs the auxiliary hook part to be a structure that is separable from the main hook part, which can reduce the manufacturing cost and assembly difficulty of the entire hoisting machinery; at the same time, the hoisting machinery of the present invention has a first state and a second state. In the first state, the main hook trolley and the auxiliary hook trolley are connected by a shorter connecting rod and have a smaller spacing. At this time, the auxiliary hook trolley only lifts ground objects, while in the second state, the main hook trolley and the auxiliary hook trolley are connected by a longer connecting rod and maintain a larger spacing. At this time, the components on the main hook trolley that need to be inspected and repaired can be lifted, thereby eliminating the need to use other hoisting machinery to lift the components on the main hook trolley; the design of the variable bracket assembly of the present invention effectively ensures that the auxiliary hook trolley can lift the objects on the main hook trolley, and the variable bracket assembly ensures that the lifting range of the multi-stage pulley rod can be extended to near the main hook trolley by adjusting the angle between the multi-stage pulley rod and the single-stage pulley rod and the orientation relative to the trolley bottom plate; at the same time, the variable bracket assembly and the winding assembly can adjust their positions on the trolley bottom plate to adapt to different lifting ranges and improve stability during the lifting process.

[0062] The remaining parts of the present invention that are not described may be the same as the prior art, or are well-known technologies, or may be implemented by using the prior art, and will not be described in detail here.

[0063] It should be noted that the above embodiments are intended to illustrate the technical solutions of the present invention, and are exemplary methods of the claims of the present invention, rather than limitations on the claims. Although the above embodiments describe the present invention in detail, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting machinery with a detachable auxiliary hook trolley, the lifting machinery comprising a main hook trolley and an auxiliary hook trolley; characterized in that: The auxiliary hook trolley has a trolley bottom plate, the trolley bottom plate is slidably connected to the track of the lifting machinery through rollers, and a connecting assembly is provided at the end of the first direction of the trolley bottom plate, and the main hook trolley is connected to the auxiliary hook trolley through the connecting assembly; a winding assembly and a variable bracket assembly are provided on the trolley bottom plate; the winding assembly is connected to the trolley bottom plate through a second slide rail assembly, and the variable bracket assembly is connected to the trolley bottom plate through the first slide rail assembly; the variable bracket assembly includes a bracket base, a single-stage pulley rod and a multi-stage pulley rod, one end of the single-stage pulley rod and the multi-stage pulley rod are respectively hinged to the bracket base, and the other ends of the single-stage pulley rod and the multi-stage pulley rod have a wire rope wheel, and an electric push rod device is hinged between the single-stage pulley rod and the multi-stage pulley rod at an end away from the bracket base; wherein, the first direction is the direction of the auxiliary hook trolley along the track toward the main hook trolley, and the variable bracket assembly has a first state and a second state. In the first state, the electric push rod device has a first extension amount, and the axial direction of the multi-stage pulley rod is In the first state, the angle between the two directions is greater than 110 degrees. In the second state, the electric push rod device has a second extension amount, the angle between the axial direction of the multi-stage pulley rod and the first direction is less than 45 degrees, and the first extension amount is less than the second extension amount; the connecting assembly includes a connecting rod one and a connecting rod two. In the first state, the connecting rod one is connected to the main hook trolley, and in the second state, the connecting rod two is connected to the main hook trolley, wherein the length of the connecting rod one is less than one-third of the length of the connecting rod two; the first slide rail assembly is arranged along the second direction, and the second slide rail assembly is arranged along the first direction, and the second direction is perpendicular to the first direction. When the variable bracket assembly slides along the first slide rail assembly, the wire rope wheels at the ends of the single-stage pulley rod and the multi-stage pulley rod are rotatable relative to the axes of the single-stage pulley rod and the multi-stage pulley rod, wherein, in the first state, the projection of the winding assembly in the height direction is within the range of the trolley bottom plate, and in the second state, the winding assembly moves along the second slide rail assembly in a direction opposite to the first direction.

2. The lifting machinery with a detachable auxiliary hook trolley as claimed in claim 1, characterized in that: The bracket base, the variable bracket assembly also includes a connecting plate, two protrusions are arranged on the connecting plate, and a support seat is arranged on the bracket base. In the first state, the single-stage pulley rod is in contact with the support seat, and both the single-stage pulley rod and the support seat are provided with mounting grooves, and the protrusions of the connecting plate are respectively matched with the mounting grooves provided on the single-stage pulley rod and the support seat.

3. The lifting machinery with a detachable auxiliary hook trolley as claimed in claim 2, characterized in that: The multi-stage pulley rod comprises a slide bar base, a first slide bar and a second slide bar. One end of the slide bar base has a hinge structure. The first slide bar is slidably arranged in the other end of the slide bar base, and the second slide bar is slidably arranged in the protruding end of the first slide bar.

4. The lifting machinery with a detachable auxiliary hook trolley as claimed in claim 3, characterized in that: The multi-stage pulley rod includes a first-stage telescopic structure and a second-stage telescopic structure, the first-stage telescopic structure includes a first sliding rod and a sliding rod base, the second-stage telescopic structure includes a second sliding rod and a first sliding rod, the first-stage telescopic structure adopts a hydraulic cylinder or an electric push rod, the second-stage telescopic structure is a slide rail structure without driving force, the second sliding rod has a slide rail locking element, and a hinge structure is arranged on the outside of one end of the second sliding rod close to the first sliding rod, the outer side of the single-stage pulley rod is arranged with a hinge structure, and the electric push rod device is respectively connected to the single-stage pulley rod and the second sliding rod through the hinge structure.

5. The lifting machinery with a detachable auxiliary hook trolley as claimed in claim 4, characterized in that: The winding assembly has a motor, and the motor has a motor base. The motor base is rotatably connected to the bottom plate of the trolley, wherein in the second state, a counterweight is provided on the bottom plate of the trolley.

6. The lifting machinery with a detachable auxiliary hook trolley as claimed in claim 5, characterized in that: The connecting rod 1 is a telescopic structure, the connecting rod 2 is a fixed-length structure, the two sides of the trolley bottom plate are rotatably provided with the connecting rod 1 and the connecting rod 2, and the side of the trolley bottom plate is also provided with a support rod.

7. A hoisting method, using the hoisting machinery with a detachable auxiliary hook trolley as claimed in claim 6, characterized in that: The hoisting method is specifically used to hoist the parts on the main hook trolley, and the hoisting method includes: In the first state, the connecting rod 2 is separated from the main hook trolley, the main hook trolley is started to move a certain distance in the first direction, and the connecting rod 1 is connected to the main hook trolley; Remove the connecting plate of the variable bracket assembly, and slowly control the single-stage pulley rod to move downward until it contacts the top surface of the support seat; The locking state of the slide rail locking element of the second slide bar is released, the first slide bar is not started, and the electric push rod device is started, the electric push rod device drives the second slide bar to extend a first distance, and the hinge structure at the connection between the electric push rod device and the single-stage pulley rod is locked; The first slide bar is controlled to extend a second distance, so that the wire rope wheel at the end of the second slide bar is in contact with the wire rope, and the wire rope wheel at the end of the single-stage pulley bar is ensured to be out of contact with the wire rope, thereby increasing the overlapping length of the first slide bar and the second slide bar; Adjusting the slide rail locking element of the second slide bar to a locked state; The second slide rail assembly of the winding assembly is started, the motor base is pushed out a third distance in a direction opposite to the first direction, and a counterweight is added to the motor base.

8. The hoisting method according to claim 7, characterized in that: The hoisting method further comprises: Before adjusting the position of the winding assembly, start the first slide rail assembly, adjust the position of the variable bracket assembly in the second direction, and adjust the angle of the motor base on the trolley bottom plate to ensure that the wire rope is effectively clamped in the wire rope wheel at the end of the second slide rod.

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