A crane auxiliary voltage dividing mechanism

Abstract

The present invention provides a crane auxiliary pressure sharing mechanism, including: a bracket for connecting with the lower cross beam of the crane door frame; a hydraulic cylinder, one end of which is connected to the bracket, the other end is telescopic and is formed with a first pin connection plate, and a first through hole is formed on the first pin connection plate; a trolley assembly, which is hinged to the hydraulic cylinder by passing through the first through hole through a lower pin assembly. In the crane auxiliary pressure sharing mechanism of the present invention, by arranging a lower pin assembly and a hydraulic cylinder between the trolley assembly and the bracket, when the ballast of the trolley traveling mechanism is too large and exceeds the rated bearing wheel pressure within the unit range of the dock and it is necessary to share the wheel pressure, the hydraulic cylinder can control the trolley assembly to descend through the lower pin assembly and abut the trolley assembly against the track surface. Thus, the wheel pressure borne by the unit dock track surface can be effectively dispersed, and the service life of the wheels of the traveling mechanism is improved.

Description

Technical Field

[0001] The present invention relates to the field of dock lifting machinery and equipment, and particularly to a crane auxiliary pressure dividing mechanism. Background Art

[0002] In the prior art, the trolley running mechanism of a rail crane includes main structures and mechanisms such as a balance beam, a main and driven trolley group, and a pin shaft. The crane gantry is connected to the balance beam through a pin shaft; the main and driven trolley group is connected to the balance beam through a pin shaft. With the improvement of sea transportation capacity, some docks need to improve the overall lifting capacity of some old equipment. As the lifting capacity of the crane increases, the weight of the whole machine increases, and the wheel pressure of the trolley running mechanism increases, exceeding the unit bearing wheel pressure of the dock track. However, currently, in docks with relatively small bearing capacity and restrictions on the overall width of the crane, the overall lifting capacity of the crane is greatly limited by the layout space of the trolley running mechanism scheme, and the dock track cannot be changed arbitrarily, making it difficult to implement the dock transformation plan for a long time. Summary of the Invention

[0003] In view of this, the present invention provides a crane auxiliary pressure dividing mechanism to solve the problem that the wheel pressure of the trolley running mechanism increases and the wheel pressure within the unit range of the dock track exceeds its unit bearing capacity.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A crane auxiliary pressure dividing mechanism according to an embodiment of the present invention includes:

[0006] A bracket for connecting to the lower cross beam of the crane door frame;

[0007] A hydraulic cylinder, one end of which is connected to the bracket, the other end is telescopic and is formed with a first pin shaft connecting plate, and a first through hole is formed on the first pin shaft connecting plate;

[0008] A trolley assembly, which is hinged to the hydraulic cylinder by passing through the first through hole with a lower pin shaft assembly.

[0009] In an embodiment of the present invention, the bracket includes:

[0010] Two first limit plates, symmetrically arranged below the bracket. Waist-shaped through holes are respectively provided on the two first limit plates. The lower pin shaft assembly passes through the two waist-shaped through holes and is hinged to the trolley group. The long sides of the waist-shaped through holes are perpendicular to the horizontal ground.

[0011] In an embodiment of the present invention, a connecting plate is provided on the trolley assembly, and a second through hole matching the first through hole is provided on the connecting plate;

[0012] The lower pin shaft assembly respectively passes through the first through hole and the second through hole to suspend the trolley assembly below the bracket.

[0013] In one embodiment of the present invention, the crane auxiliary pressure dividing mechanism further comprises:

[0014] Two second limiting plates, the two second limiting plates are connected below the bracket and are respectively perpendicular to the two first limiting plates, and the two second limiting plates are respectively provided with a third through hole;

[0015] A second pin connecting plate is fixedly connected to one end of the hydraulic cylinder away from the first pin connecting plate and is parallel to the second limit plate, and a fourth through hole matching the third through hole is provided on the second pin connecting plate;

[0016] The upper pin shaft assembly is respectively penetrated in the two third through holes and the fourth through hole so that the hydraulic cylinder can be rotatably connected to the two second limit plates.

[0017] In one embodiment of the present invention, the trolley assembly comprises:

[0018] A trolley frame, with two connecting plates arranged above the trolley frame;

[0019] Two sets of driven wheels are symmetrically arranged below the trolley frame.

[0020] In one embodiment of the present invention, the lower pin assembly comprises:

[0021] Two first positioning sleeves, the two first positioning sleeves are symmetrically arranged in the two waist-shaped through holes and the two second through holes, and a first fixing portion protruding along the circumferential direction is formed at one end of the first positioning sleeve away from the first pin shaft connecting plate;

[0022] A first pin shaft, the first pin shaft is respectively inserted into the two first positioning sleeves and the first through hole, and a first rotating slider protruding in the circumferential direction is formed at the contact point between the first pin shaft and the first through hole;

[0023] Two first end covers, which are respectively covered on one end of the two first positioning sleeves away from the first pin connecting plate and are fixedly connected to the first pin by first bolts;

[0024] A plurality of lubricating oil grooves are provided in the two first positioning sleeves and are used for injecting lubricating grease between the first pin shaft and the first positioning sleeve.

[0025] In one embodiment of the present invention, the diameter of the first end cover is greater than the diameter of the first positioning sleeve.

[0026] In one embodiment of the present invention, the upper pin assembly comprises:

[0027] Two second positioning bushings are respectively inserted into two third through holes. At one end of the second positioning bushing facing away from the second pin shaft connecting plate, a second fixing portion protruding circumferentially is formed.

[0028] Second pin shafts are respectively inserted into the two second positioning bushings and the fourth through holes. At the contact position between the second pin shaft and the fourth through hole, a second rotating slider protruding circumferentially is formed.

[0029] Two second end covers are respectively covered on one end of the two second positioning bushings facing away from the second pin shaft connecting plate, and are fixedly connected to the second pin shaft through second bolts.

[0030] In an embodiment of the present invention, the diameter of the second end cover is larger than the diameter of the second positioning bushing.

[0031] In an embodiment of the present invention, the crane auxiliary pressure sharing mechanism further includes:

[0032] A controller, which is connected to the hydraulic cylinder and is used to control the hydraulic cylinder to lift or lower the trolley assembly.

[0033] The above technical solutions of the present invention have at least one of the following beneficial effects:

[0034] 1. In the crane auxiliary pressure sharing mechanism of the present invention, the hydraulic cylinder is respectively connected to the pressure sharing mechanism support and the trolley assembly, and the trolley assembly is suspended above the track. When it is necessary to share the wheel pressure, the trolley assembly can be lowered by the hydraulic cylinder and the trolley assembly is abutted against the track, so as to effectively disperse the wheel pressure of the trolley traveling mechanism.

[0035] 2. In the crane auxiliary pressure sharing mechanism of the present invention, the trolley assembly is suspended above the track by the hydraulic cylinder, and the trolley assembly is only lowered when it is necessary to share the wheel pressure. There is no need to increase the total width of the trolley or reduce the wheelbase of the trolley, avoiding the overall transformation of the wharf and effectively saving the transformation cost.

[0036] 3. In the crane auxiliary pressure sharing mechanism of the present invention, by setting the first limiting plate with a waist-shaped through hole to limit the movement of the trolley assembly, the trolley assembly can only move in the vertical direction, and at the same time, it does not affect the lateral movement performance of the trolley assembly, effectively improving the safety and guiding performance. Description of the Drawings

[0037] Figure 1 It is a cross-sectional view of the crane auxiliary pressure sharing mechanism according to the embodiment of the present invention;

[0038] Figure 2 It is a side cross-sectional view of the crane auxiliary pressure sharing mechanism according to the embodiment of the present invention;

[0039] Figure 3Side sectional view of the connection between the hydraulic cylinder and the lower pin shaft assembly of the crane auxiliary pressure dividing mechanism according to an embodiment of the present invention;

[0040] Figure 4 Side sectional view of the connection between the hydraulic cylinder and the upper pin shaft assembly of the crane auxiliary pressure dividing mechanism according to an embodiment of the present invention.

[0041] Reference numerals: 100, bracket; 110, first limiting plate; 111, waist-shaped through hole; 120, second limiting plate; 200, hydraulic cylinder; 201, first pin shaft connecting plate; 202, second pin shaft connecting plate; 300, trolley assembly; 301, connecting plate; 310, trolley frame; 320, driven wheel; 400, lower pin shaft assembly; 410, first positioning bushing; 420, first pin shaft; 421, first rotating slider; 430, first end cover; 440, lubricating oil groove; 500, upper pin shaft assembly; 510, second positioning bushing; 520, second pin shaft; 521, second rotating slider; 530, second end cover. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0043] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, the terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0044] With the development of modern terminal freight, the weight of goods is gradually increasing. To improve the lifting capacity of rail-mounted cranes, the weight of the lifting mechanism of rail-mounted cranes is also gradually increasing, which poses a challenge to the existing bearing capacity of the terminal. To solve the problem that the rated bearing wheel pressure within the unit range of the terminal is insufficient to bear the instantaneous overload wheel pressure of the crane, some terminals will increase the total width of the crane's trolley traveling mechanism or increase the bearing capacity of the terminal to reduce the unit wheel pressure of the crane. However, in some old terminals, the terminal tracks cannot be changed arbitrarily, and the lifting capacity of the whole machine is greatly restricted by the layout space of the trolley traveling mechanism. The contradiction between the large wheel pressure of large cranes and the low bearing capacity of the terminal makes it difficult to improve the lifting capacity of rail-mounted cranes for a long time. To solve the above problems, the present invention provides a crane auxiliary pressure-dividing mechanism.

[0045] First, a crane auxiliary pressure-dividing mechanism according to the present invention will be specifically described below with reference to the accompanying drawings.

[0046] As Figure 1 and Figure 2 shown, the present invention provides a crane auxiliary pressure-dividing mechanism, including: a bracket 100, a hydraulic cylinder 200, a trolley assembly 300, and a lower pin assembly 400. Among them, the bracket 100 is used to connect with the balance beam of the crane; one end of the hydraulic cylinder 200 is connected to the bracket, the other end is telescopic and is formed with a first pin connection plate 201, and a first through hole is formed on the first pin connection plate 201; the trolley assembly 300 is hinged to the hydraulic cylinder 200 by passing through the first through hole with the lower pin assembly 400.

[0047] Specifically, the bracket 100 is arranged under the crane and fixedly connected to the lower cross beam of the door frame under the crane. The bracket 100 is formed in an inverted triangular shape or an inverted trapezoidal shape. In a preferred embodiment of the present invention, the bracket 100 is an inverted trapezoid, and the inverted trapezoidal structure is stable. Thus, the stability of the bracket 100 is improved, and the trolley assembly 300 below can be stably suspended. One end of the hydraulic cylinder 200 is fixedly connected to the bracket 100, and the other end is telescopic and formed with a first pin connecting plate 201. The trolley assembly 300 of the crane auxiliary pressure dividing mechanism is a driven trolley group, which is used to move on the track following the active trolley group (not shown); the lower pin assembly 400 is respectively passed through the first through hole on the first pin 420 and the second through hole on the connecting plate 301. Thus, under normal working conditions, the hydraulic cylinder 200 can suspend the trolley assembly 300 20-30 centimeters below the bracket 100 through the lower pin assembly 400. At this time, the crane travels through the active trolley group. Since there is no need to drive the driven trolley group, the friction between the driven trolley group and the dock track is overcome, and the running speed of the active trolley group can be effectively improved. When the wheel pressure of the crane exceeds the dock bearing wheel pressure and it is necessary to disperse the wheel pressure through the trolley assembly 300, the hydraulic cylinder 200 can be started to push the first pin connecting plate 201 to drive the trolley assembly 300 to descend and abut the trolley assembly 300 against the dock track. At this time, a part of the load borne by the crane is transmitted to the dock track through the trolley assembly 300. The trolley assembly 300 can share the wheel pressure with the active trolley group, thereby reducing the wheel pressure borne by the dock track surface and effectively prolonging the service life of the traveling mechanism.

[0048] As Figure 1 and Figure 2 shown, in an embodiment of the present invention, the bracket 100 includes: two first limiting plates 110. The two first limiting plates 110 are symmetrically arranged under the bracket 100. Waist-shaped through holes 111 are respectively provided on the two first limiting plates 110, and the long sides of the waist-shaped through holes 111 are perpendicular to the horizontal ground. The two first limiting plates 110 are passed through the lower pin assembly 400 through the waist-shaped through holes 111.

[0049] Specifically, the bracket 100 is connected to the trolley assembly 300 through the hydraulic cylinder 200, and the first pin connecting plate 201 on the hydraulic cylinder 200 is rotatably connected to the connecting plate 301 on the trolley assembly 300 through the lower pin assembly 400. When the crane is moving, the trolley assembly 300 will shift due to inertia, so it needs to be limited. Waist-shaped through holes 111 are respectively provided on the two limiting plates, and the lower pin assembly 400 is passed through the waist-shaped through holes 111, so that when the hydraulic cylinder 200 pushes the trolley assembly 300, the trolley assembly 300 always moves along the length direction of the waist-shaped through hole 111 perpendicular to the horizontal ground. Thus, the problem of safety accidents caused by the shift of the trolley assembly 300 due to inertia during the movement of the crane is avoided, and the safety of the equipment is effectively improved.

[0050] As Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the crane auxiliary pressure-dividing mechanism further includes: two second limiting plates 120, a second pin connecting plate 202, and an upper pin assembly 500. Among them, the two second limiting plates 120 are connected below the bracket 100 and are respectively perpendicular to the two first limiting plates 110, and third through holes are respectively provided on the two second limiting plates 120; the second pin connecting plate 202 is fixedly connected to the end of the hydraulic cylinder 200 facing away from the first pin connecting plate 201 and is parallel to the second limiting plate 120, and a fourth through hole matching the third through hole is provided on the second pin connecting plate 202; the upper pin assembly 500 is respectively passed through the two third through holes and the fourth through hole to rotatably connect the hydraulic cylinder 200 to the two second limiting plates 120.

[0051] Specifically, since the trolley assembly 300 is suspended below the hydraulic cylinder 200 and the masses of the hydraulic cylinder 200 and the trolley assembly 300 are relatively large, the lateral stress on the connection between the bracket 100 and the hydraulic cylinder 200 is relatively large. If a rigid connection is adopted, there is a potential safety hazard of fracture. Therefore, the bracket 100 and the hydraulic cylinder 200 can be rotatably connected through the upper pin shaft assembly 500, thereby effectively dispersing the lateral stress. Thus, the probability of metal fatigue is effectively reduced and the safety performance is improved. More specifically, the upper pin shaft assembly 500 is respectively inserted into the two second limiting plates 120 and the second pin shaft connecting plate 202 to connect the hydraulic cylinder 200 below the bracket 100. When the crane wheel pressure exceeds the dock bearing wheel pressure and it is necessary to disperse the wheel pressure through the trolley assembly 300, the hydraulic cylinder 200 can be activated to push the first pin shaft connecting plate 201 to drive the trolley assembly 300 to descend and abut the trolley assembly 300 against the dock track. At this time, the hydraulic cylinder 200 can transmit an upward relative force equal to the fixed load applied to the trolley assembly 300, so that the hydraulic cylinder 200 is in force balance in the vertical direction, effectively improving the stability of the trolley assembly 300 below the hydraulic cylinder 200 during operation. Thus, the safety performance is further improved.

[0052] In an embodiment of the present invention, the trolley assembly 300 includes: a trolley frame 310 and two sets of driven wheels 320. Among them, two connecting plates 301 are arranged above the trolley frame 310; the two sets of driven wheels 320 are symmetrically arranged below the trolley frame 310. Specifically, the trolley assembly 300 is a driven trolley group in the crane traveling mechanism, which is used to follow the driving trolley group to travel and to share the wheel pressure of the trolley traveling mechanism. By arranging two sets of symmetrically arranged driven wheels 320 below the trolley frame 310, the contact area between the trolley assembly 300 and the dock track can be increased, effectively dispersing the wheel pressure of the trolley traveling mechanism and reducing the pressure borne by the dock track surface.

[0053] As Figure 3As shown in the figure, in an embodiment of the present invention, the lower pin shaft assembly 400 includes: two first positioning bushings 410, a first pin shaft 420, two first end covers 430, and a plurality of lubricating oil grooves 440. Among them, the two first positioning bushings 410 are symmetrically inserted through the two waist-shaped through holes 111 and the two second through holes. A first fixing portion protruding circumferentially is formed at one end of the first positioning bushing 410 away from the first pin shaft connecting plate 201; the first pin shaft 420 is respectively inserted through the two first positioning bushings 410 and the first through hole. A first rotating slider 421 protruding circumferentially is formed at the contact portion between the first pin shaft 420 and the first through hole; the two first end covers 430 are respectively covered at one end of the two first positioning bushings 410 away from the first pin shaft connecting plate 201 and are fixedly connected to the first pin shaft 420 by first bolts. The diameter of the first end cover 430 is larger than the diameter of the first positioning bushing 410; the plurality of lubricating oil grooves 440 are inserted through the two first positioning bushings 410 and are used for injecting grease between the first pin shaft 420 and the first positioning bushing 410.

[0054] Specifically, the mass of the trolley assembly 300 is relatively large. If the hydraulic cylinder 200 is rigidly connected to the trolley assembly 300, due to the inertia of the trolley assembly 300, the connection part will shake and cause metal fatigue, and then break, posing a safety hazard. Therefore, by rotatably connecting the hydraulic cylinder 200 and the trolley assembly 300 through the lower pin shaft assembly 400, the stress can be effectively dispersed, the probability of metal fatigue can be reduced, and the safety performance is improved. More specifically, the two first positioning bushings 410 are clamped in the waist-shaped through holes 111 through the first fixing portions provided at one end away from the first pin shaft connecting plate 201, and the two first positioning bushings 410 do not contact each other, so that the first pin shaft 420 inserted through the two first positioning bushings 410 can directly contact the inner wall of the first through hole. A first rotating slider 421 is provided at the contact portion between the first pin shaft 420 and the inner wall of the first through hole, thereby reducing the friction between the first pin shaft 420 and the first through hole. Thus, the smoothness of the rotation of the first pin shaft 420 in the first through hole is effectively improved, and the stress can be effectively dispersed, and the safety performance is enhanced. At the same time, two first end covers 430 are respectively provided on both sides of the two first positioning bushings 410 and are fixed by first bolts (not shown). The diameter of the first end cover 430 is larger than the diameter of the first positioning bushing 410. Thus, the first pin shaft 420 can be effectively positioned and sealed, preventing the first pin shaft 420 from slipping out, and improving the safety of the device. In addition, a plurality of lubricating oil grooves 440 are arranged at intervals between the two first positioning bushings 410, and grease can be injected between the first pin shaft 420 and the first positioning bushing 410 through the lubricating oil grooves 440. Thus, the friction between the first pin shaft 420 and the first positioning bushing 410 is reduced, the smoothness of the rotation of the first pin shaft 420 in the first positioning bushing 410 is effectively improved, and the stress can be dispersed, further enhancing the safety performance.

[0055] As Figure 4 shown, in an embodiment of the present invention, the upper pin shaft assembly 500 includes: two second positioning bushings 510, a second pin shaft 520, and two second end caps 530. Among them, the two second positioning bushings 510 are respectively inserted into the two third through holes, and a second fixing portion protruding circumferentially is formed at one end of the second positioning bushing 510 away from the second pin shaft connecting plate 202; the second pin shaft 520 is respectively inserted into the two second positioning bushings 510 and the fourth through hole, and a second rotating slider 521 protruding circumferentially is formed at the contact portion between the second pin shaft 520 and the fourth through hole; the two second end caps 530 are respectively covered on one end of the two second positioning bushings 510 away from the second pin shaft connecting plate 202, and are fixedly connected to the second pin shaft 520 by second bolts, and the diameter of the second end cap 530 is larger than the diameter of the second positioning bushing 510.

[0056] Specifically, since the trolley assembly 300 is suspended below the hydraulic cylinder 200, and the mass of the hydraulic cylinder 200 and the trolley assembly 300 is relatively large, the lateral stress received at the connection between the bracket 100 and the hydraulic cylinder 200 is relatively large. If a rigid connection is adopted, there is a potential safety hazard of fracture. Therefore, the bracket 100 and the hydraulic cylinder 200 can be rotatably connected through the upper pin shaft assembly 500, thereby effectively dispersing the lateral stress. Thus, the probability of metal fatigue is effectively reduced, and the safety performance is improved. More specifically, the two second positioning bushings 510 are respectively clamped in the two third through holes through the second fixing portions provided at the ends away from the second pin shaft connecting plate 202, and the two second positioning bushings 510 do not contact each other, so that the second pin shaft 520 inserted into the two second positioning bushings 510 can directly contact the inner wall of the fourth through hole. A second rotating slider 521 is provided at the contact portion between the second pin shaft 520 and the inner wall of the fourth through hole, thereby reducing the friction between the second pin shaft 520 and the fourth through hole. Thus, the smoothness of the rotation of the second pin shaft 520 in the fourth through hole is effectively improved, and further the lateral stress can be effectively dispersed, and the safety performance is improved. At the same time, two second end caps 530 are respectively provided on both sides of the two second positioning bushings 510 and are fixed by second bolts (not shown), and the diameter of the second end cap 530 is larger than the diameter of the second positioning bushing 510. Thus, the second pin shaft 520 can be effectively positioned and sealed, preventing the second pin shaft 520 from coming out, and further improving the safety of the device.

[0057] In an embodiment of the present invention, the crane auxiliary pressure-sharing mechanism further includes: a controller (not shown). The controller is connected to the hydraulic cylinder 200 and is used to control the hydraulic cylinder 200 to lift or lower the trolley assembly 300. Specifically, the controller can monitor the wheel pressure feedback signal in real time, and when the crane wheel pressure exceeds the quay bearing wheel pressure, the hydraulic cylinder 200 is made to apply a fixed load not exceeding twice the quay bearing wheel pressure to the trolley assembly 300, so as to hold the trolley assembly 300 against the quay track. By the controller monitoring the wheel pressure feedback signal in real time, the reaction time of the hydraulic cylinder 200 is effectively reduced, enabling the trolley assembly 300 to quickly hold against the quay track to disperse the wheel pressure. Thereby, the pressure borne by the quay track surface is effectively reduced, further improving the service life and safety performance of the traveling mechanism.

[0058] The crane auxiliary pressure-sharing mechanism of the present invention connects the pressure-sharing mechanism bracket and the trolley assembly through hydraulic cylinders respectively. Under normal working conditions, the hydraulic cylinder can suspend the trolley assembly below the bracket through the lower pin assembly. At this time, the crane travels through the active trolley group. Since there is no need to drive the driven trolley group and overcome the friction between the driven trolley group and the quay track, the running speed of the active trolley group can be effectively improved. When the crane wheel pressure exceeds the quay bearing wheel pressure and it is necessary to disperse the wheel pressure through the trolley assembly, the hydraulic cylinder can be started to push the first pin connecting plate to drive the trolley assembly to descend, and hold the trolley assembly against the quay track, thereby effectively dispersing the wheel pressure, reducing the pressure borne by the quay surface, and effectively improving the service life and use safety of the trolley traveling mechanism.

[0059] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A crane auxiliary voltage dividing mechanism, characterized in that, include: A bracket, used for connecting with the lower cross beam of the crane door frame; A hydraulic cylinder, one end of which is connected to the bracket, and the other end of which is retractable and formed with a first pin connecting plate, wherein the first pin connecting plate is formed with a first through hole; A trolley assembly is inserted into the first through hole through a lower pin assembly to be hinged with the hydraulic cylinder; two second limit plates; A second pin connecting plate; Upper pin assembly; A controller, the controller being connected to the hydraulic cylinder and used to control the hydraulic cylinder to lift or lower the trolley assembly; The support comprises: Two first limit plates are symmetrically arranged below the bracket, and waist-shaped through holes are respectively provided on the two first limit plates. The lower pin shaft assembly is passed through the two waist-shaped through holes and is hinged to the trolley assembly, and the long sides of the waist-shaped through holes are perpendicular to the horizontal ground; The trolley assembly is provided with a connecting plate, and the connecting plate is provided with a second through hole matching the first through hole; The lower pin shaft assembly is respectively inserted into the first through hole and the second through hole to suspend the trolley assembly below the bracket; The two second limit plates are connected below the bracket and are respectively perpendicular to the two first limit plates, and the two second limit plates are respectively provided with a third through hole; The second pin connecting plate is fixedly connected to one end of the hydraulic cylinder away from the first pin connecting plate and is parallel to the second limit plate. The second pin connecting plate is provided with a fourth through hole matching the third through hole. The upper pin shaft assembly is respectively inserted into the two third through holes and the fourth through hole so that the hydraulic cylinder can be rotatably connected to the two second limit plates; The lower pin assembly comprises: Two first positioning sleeves, the two first positioning sleeves are symmetrically arranged in the two waist-shaped through holes and the two second through holes, and a first fixing portion protruding along the circumferential direction is formed at one end of the first positioning sleeve away from the first pin shaft connecting plate; A first pin shaft, wherein the first pin shaft is respectively inserted into the two first positioning sleeves and the first through hole, and a first rotating slider protruding in the circumferential direction is formed at a contact point between the first pin shaft and the first through hole; Two first end covers, the two first end covers are respectively covered on one end of the two first positioning sleeves away from the first pin connecting plate, and are fixedly connected to the first pin by first bolts; A plurality of lubricating oil grooves are provided in the two first positioning sleeves and are used for injecting lubricating grease into between the first pin shaft and the first positioning sleeve.

2. The crane auxiliary voltage dividing mechanism according to claim 1, characterized in that The trolley assembly comprises: A trolley frame, with two connecting plates arranged above the trolley frame; Two groups of driven wheels are symmetrically arranged below the trolley frame.

3. The crane auxiliary voltage dividing mechanism according to claim 2, characterized in that, The diameter of the first end cover is greater than the diameter of the first positioning sleeve.

4. The crane auxiliary voltage dividing mechanism according to claim 1, characterized in that, The upper pin shaft assembly comprises: Two second positioning sleeves, the two second positioning sleeves are respectively inserted into the two third through holes, and a second fixing portion protruding along the circumferential direction is formed at one end of the second positioning sleeve away from the second pin shaft connecting plate; A second pin shaft, wherein the second pin shaft is respectively inserted into the two second positioning sleeves and the fourth through hole, and a second rotating slider protruding in the circumferential direction is formed at the contact point between the second pin shaft and the fourth through hole; Two second end covers are respectively covered on one end of the two second positioning sleeves away from the second pin shaft connecting plate, and are fixedly connected to the second pin shaft through second bolts.

5. The crane auxiliary voltage dividing mechanism according to claim 4, characterized in that, The diameter of the second end cover is greater than the diameter of the second positioning sleeve.

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