Gearbox lifting device

Abstract

The present application relates to gear box transportation technical field, provide a kind of gear box hoisting device, including walking mechanism, spring self-locking mechanism and positioning mechanism;Spring self-locking mechanism includes locking support seat and elastic locking assembly, the locking support seat is set to the walking mechanism, the locking support seat is provided with insertion hole, the insertion hole is suitable for with the lug insertion cooperation, the elastic locking assembly is set to the locking support seat, suitable for in the insertion hole with the lug elastic clamping cooperation;Positioning mechanism is set to the walking mechanism, suitable for with the lower side threaded hole insertion cooperation.The present application can effectively avoid gear box lug place paint knock, cause damage to lug.In addition, by positioning mechanism and elastic locking assembly cooperation, can avoid lug and elastic locking assembly disengagement, reach protection effect, the elastic compression form of elastic locking assembly is also conducive to adapt to different gear box lug, with better versatility.

Description

Technical Field

[0001] This invention relates to the field of gearbox transportation technology, and more particularly to a gearbox hoisting device. Background Technology

[0002] In the production of railway vehicle bogies, a hoisting device needs to be connected to the lifting lugs of the gearbox to support and lift the gearbox. When connecting the hoisting device to the gearbox lifting lugs, a sleeve structure needs to be fitted over the outside of the lifting lugs, and the sleeve structure is tightened with the lifting lugs using bolts. The currently used hoisting device has the following problems when transferring gearboxes:

[0003] This makes the work process different and tedious.

[0004] 1. When assembling with existing equipment, direct tightening with bolts can easily cause paint damage to the gearbox lifting lugs and damage the gearbox lifting lugs themselves.

[0005] 2. During transportation, the hoisting device provides a single-point support for the gearbox, which is not securely fixed. This causes the hoisting device to fall off, and the gearbox is dragged along with the wheelset. The dragging process requires manual handling, which can easily cause bodily injury to personnel.

[0006] 3. Different types of gearboxes exist in different application areas. Different types of gearboxes have different lifting lug structures and lifting methods, requiring the manufacture of special devices for different gearboxes, which is costly. Summary of the Invention

[0007] This invention provides a gearbox lifting device to solve the problem that existing lifting devices, when used to transfer gearboxes, easily cause paint damage to the gearbox lifting lugs.

[0008] This invention provides a gearbox lifting device, applicable to gearboxes, wherein the gearbox is provided with lifting lugs and a lower threaded hole, comprising:

[0009] Walking mechanism;

[0010] A spring self-locking mechanism includes a locking support base and an elastic locking component. The locking support base is disposed on the traveling mechanism and has an insertion hole adapted to be inserted into the lifting lug. The elastic locking component is disposed on the locking support base and is adapted to be elastically clamped into the lifting lug within the insertion hole.

[0011] A positioning mechanism is provided on the traveling mechanism and is adapted to be inserted into the lower threaded hole.

[0012] A gearbox hoisting device according to the present invention further includes a connecting rod locking mechanism;

[0013] The linkage locking mechanism includes a linkage assembly and a wedge block;

[0014] The wedge block is located inside the insertion hole, and a locking bevel is provided on the lower side of the wedge block. The locking bevel is used to contact and cooperate with the upper side of the lifting lug.

[0015] The connecting rod assembly is disposed on the locking support seat and connected to the wedge block, and is used to adjust the position of the wedge block in the socket.

[0016] According to the present invention, a gearbox hoisting device is provided, wherein the linkage assembly includes a first linkage, a second linkage, an adjusting bolt, a locking nut, and a mounting block;

[0017] The mounting block is provided with a mounting slot;

[0018] The adjusting bolt passes through the locking support seat. One end of the adjusting bolt inside the insertion hole is rotatably connected to the mounting block, and the other end outside the insertion hole is threadedly connected to the locking nut.

[0019] The locking nut is fixedly connected to the side wall of the locking support seat;

[0020] The first connecting rod and the second connecting rod are located in the insertion hole. One end of the first connecting rod and one end of the second connecting rod are rotatably connected through a transition shaft. The transition shaft is slidably connected to the mounting groove. The end of the first connecting rod away from the transition shaft is horizontally hinged to the inner wall of the locking support seat. The end of the second connecting rod away from the transition shaft is hinged to the wedge block.

[0021] According to a gearbox hoisting device provided by the present invention, the elastic locking assembly includes:

[0022] A pair of lateral elastic locking components are respectively placed on both sides of the locking support base for elastic abutment and engagement with both sides of the lug in the socket;

[0023] An upper elastic locking component is disposed on the upper side of the locking support base and is used to abut against the upper side of the lug within the insertion hole.

[0024] According to a gearbox hoisting device provided by the present invention, at least one of the lateral elastic locking assembly and the upper elastic locking assembly has the following configuration:

[0025] The device includes a slide rod, a locking spring, a locking plate, and a positioning nut. The slide rod is slidably connected to the locking support base. One end of the slide rod located inside the insertion hole is fixedly connected to the locking plate, and the other end located outside the insertion hole is threaded to the positioning nut. The locking spring is sleeved on the slide rod, with one end abutting against the side wall of the locking support base and the other end abutting against the locking plate.

[0026] According to a gearbox hoisting device provided by the present invention, the positioning mechanism includes:

[0027] The cantilever is horizontally rotatably connected to the walking mechanism;

[0028] A spring pin assembly is disposed on the cantilever and is used to engage with the lower threaded hole.

[0029] According to a gearbox hoisting device provided by the present invention, the positioning mechanism further includes:

[0030] A positioning component is disposed on the cantilever and adapted to be positioned along the cantilever, the positioning component being used to fix the outer side of the lower threaded hole;

[0031] The spring pin assembly is mounted on the positioning assembly and is adapted to move with the positioning assembly.

[0032] According to a gearbox hoisting device provided by the present invention, the positioning component includes:

[0033] A positioning block is located on the upper side of the cantilever, and the positioning block is provided with a U-shaped groove;

[0034] A threaded sleeve passes through a groove provided on the cantilever, and its upper end is fixedly connected to the positioning block.

[0035] A sleeve nut is located on the lower side of the cantilever and is threadedly connected to the threaded sleeve.

[0036] According to a gearbox hoisting device provided by the present invention, the bottom of the U-shaped groove is provided with a first through hole, the bottom plate of the threaded sleeve is provided with a second through hole, the inner cavity of the threaded sleeve communicates with the first through hole and the second through hole, and the spring pin assembly includes:

[0037] A stepped positioning shaft is slidably inserted through the first through hole;

[0038] A extraction pin is slidably inserted through the second through hole, and the upper end of the extraction pin is fixedly connected to the lower end of the stepped positioning shaft.

[0039] A compression spring is disposed inside the threaded sleeve and sleeved on the outside of the extraction pin. The upper end of the compression spring abuts against the lower end of the stepped positioning shaft, and the lower end of the compression spring abuts against the bottom plate of the threaded sleeve.

[0040] According to the present invention, a gearbox hoisting device includes a traveling mechanism comprising:

[0041] Wheels;

[0042] A rotating shaft assembly is vertically arranged. The lower end of the rotating shaft assembly is connected to the moving wheel, and the upper end is connected to the spring self-locking mechanism. The rotating shaft assembly is movably connected to the positioning mechanism. The rotating shaft assembly has a lower support surface located below the positioning mechanism and an upper support surface located above the positioning mechanism.

[0043] A first support spring is sleeved with the rotating shaft assembly and is located between the upper support surface and the positioning mechanism;

[0044] The second support spring is sleeved with the rotating shaft assembly and is located between the lower support surface and the positioning mechanism.

[0045] The gearbox lifting device provided by this invention inserts the gearbox lifting lug into the insertion hole, achieves elastic locking using an elastic locking component, and positions it by engaging with the lower threaded hole through a positioning mechanism. This satisfies the gearbox locking and positioning requirements. Because the locking is elastic, this invention effectively prevents paint damage to the gearbox lifting lug. Furthermore, the positioning mechanism, in conjunction with the elastic locking component, prevents the lifting lug from detaching from the elastic locking component, providing protection. The elastic compression of the elastic locking component also allows for adaptation to different gearbox lifting lugs, offering better versatility. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a gearbox hoisting device provided by the present invention;

[0048] Figure 2 This is a schematic diagram illustrating the spring self-locking mechanism of a gearbox hoisting device provided by the present invention;

[0049] Figure 3This is a structural schematic diagram from another perspective of a gearbox hoisting device provided by the present invention;

[0050] Figure 4 yes Figure 3 Enlarged view of point A in the image;

[0051] Figure label:

[0052] 100. Walking mechanism; 110. Moving wheel; 120. Rotating shaft assembly; 121. First rotating shaft; 122. Second rotating shaft; 130. First support spring; 140. Second support spring;

[0053] 200. Spring self-locking mechanism; 210. Locking support base; 211. Insertion hole; 220. Lateral elastic locking assembly; 230. Upper elastic locking assembly; 231. Slide rod; 232. Locking spring; 233. Locking plate;

[0054] 300, Positioning mechanism; 310, Cantilever; 311, Slide groove; 320, Spring pin assembly; 321, Stepped positioning shaft; 322, Extraction pin; 323, Compression spring; 330, Positioning assembly; 331, Positioning block; 332, Threaded sleeve; 333, Sleeve nut;

[0055] 400. Linkage locking mechanism; 410. Wedge block; 420. First link; 430. Second link; 440. Adjusting bolt; 450. Locking nut; 460. Mounting block. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0057] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0059] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] The following is combined with Figures 1 to 4 This invention describes a gearbox lifting device suitable for use with gearboxes, which are equipped with lifting lugs and threaded holes on the lower side. Typically, during gearbox lifting and assembly operations, the gearbox is moved by supporting the lifting lugs and engaging with the wheelset. The gearbox lifting device of this invention solves the problems of damage to the gearbox lifting lugs, easy detachment, and poor applicability in existing technologies.

[0062] like Figure 1As shown, the gearbox lifting device of this embodiment includes a traveling mechanism 100, a spring self-locking mechanism 200, and a positioning mechanism 300. The traveling mechanism 100 is used for supporting movement on the ground or a support platform. The spring self-locking mechanism 200 includes a locking support seat 210 and an elastic locking assembly. The locking support seat 210 is disposed on the traveling mechanism 100 and has a socket 211 adapted to be inserted into a lifting lug. The elastic locking assembly is disposed on the locking support seat 210 and adapted to elastically clamp into the lifting lug within the socket 211. The positioning mechanism 300 is disposed on the traveling mechanism 100 and adapted to be inserted into a lower threaded hole.

[0063] When lifting a gearbox using the gearbox lifting device of this embodiment, the gearbox lifting lug is inserted into the insertion hole 211, and elastic locking is achieved using the elastic locking component. Positioning is achieved through the engagement of the positioning mechanism 300 with the lower threaded hole, thus meeting the gearbox locking and positioning requirements. Because the locking is elastic, this invention effectively prevents paint chipping at the gearbox lifting lug, thus avoiding damage. Furthermore, the use of the positioning mechanism 300 in conjunction with the elastic locking component prevents the lifting lug from detaching from the elastic locking component, providing protection. The elastic compression of the elastic locking component also allows for adaptation to different gearbox lifting lugs, offering better versatility.

[0064] Combination Figure 1 and Figure 2 The locking support base 210 is a rectangular cylindrical shape with openings on its front and rear sides. An insertion hole 211 for inserting a lifting lug is formed on the inner side of the locking support base 210. A lifting ring is provided on the top of the locking support base 210 for easy lifting. The elastic locking assembly provides elastic restraint to the lifting lug after it is inserted into the insertion hole 211. Since both the spring self-locking mechanism 200 and the positioning mechanism 300 are located on the traveling mechanism 100, when the spring self-locking mechanism 200 is connected to the lifting lug and the positioning mechanism 300 is inserted into the threaded hole on the lower side of the gearbox, multi-point support for the gearbox can be achieved. Furthermore, the positioning function of the positioning mechanism 300 prevents the lifting lug from disengaging from the spring self-locking mechanism 200.

[0065] In some embodiments of the present invention, the elastic locking assembly includes a pair of lateral elastic locking assemblies 220 and an upper elastic locking assembly 230; the pair of lateral elastic locking assemblies 220 are disposed on both sides of the locking support 210 and are used to elastically abut against both sides of the lug in the insertion hole 211; the upper elastic locking assembly 230 is disposed on the upper side of the locking support 210 and is used to abut against the upper side of the lug in the insertion hole 211.

[0066] Therefore, a pair of lateral elastic locking components 220 can be used to limit the two sides of the lifting lug, the upper elastic locking component 230 can be used to limit the upper side of the lifting lug, and the lower inner wall of the locking support 210 can be used to limit the lower side of the lifting lug. It is worth noting that, since the spring self-locking mechanism 200 provides upward support to the lifting lug during hoisting, to maintain stability and avoid swaying, it is not necessary to use elastic locking components for support at the lower position.

[0067] Optionally, at least one of the lateral resilient locking assembly 220 and the upper resilient locking assembly 230 has the following configuration:

[0068] It includes a slide rod 231, a locking spring 232, a locking plate 233, and a positioning nut. The slide rod 231 is slidably connected to the locking support 210. One end of the slide rod 231 located inside the insertion hole 211 is fixedly connected to the locking plate 233, and the other end located outside the insertion hole 211 is threadedly connected to the positioning nut. The locking spring 232 is sleeved on the slide rod 231. One end of the locking spring 232 abuts against the side wall of the locking support 210, and the other end abuts against the locking plate 233.

[0069] In this embodiment, it is preferable that both the pair of lateral elastic locking components 220 and the upper elastic locking component 230 have the above-described configuration.

[0070] When the lug is inserted into the socket 211, the sides and top of the lug push the corresponding locking plates 233 outward, compressing the locking spring 232 until the lug is fully inserted into the socket 211. Under the support of the locking spring 232, the locking plates 233 can press against the side wall of the lug to achieve a locking effect.

[0071] Optionally, in the lateral elastic locking assembly 220, two slide rods 231, two locking springs 232 and two positioning nuts are respectively provided. The two slide rods 231 are simultaneously fixedly connected to the locking plate 233, and the arrangement direction of the two slide rods 231 is parallel to the direction of the insertion hole 211.

[0072] Optionally, the upper elastic locking assembly 230 may include one slide rod 231, one locking spring 232, and one positioning nut.

[0073] In one embodiment, the end of the locking plate 233 is provided with a slope inclined away from the center of the insertion hole 211. When the front end of the locking plate 233 is provided with a slope inclined away from the center of the insertion hole 211, the lifting lug can be easily inserted, and the locking plate 233 can be prevented from damaging the lifting lug during insertion. When the rear end of the locking plate 233 is provided with a slope inclined away from the center of the insertion hole 211, the lifting lug can be easily pulled out, and the locking plate 233 can be prevented from damaging the lifting lug during pull-out. Preferably, both ends of the locking plate 233 are respectively provided with slopes inclined away from the center of the insertion hole 211.

[0074] Optionally, the slope of the end of the locking plate 233 ranges from 8° to 12°, preferably 10°.

[0075] In another embodiment, the end of the locking plate 233 is configured as an arc-shaped plate curved away from the center of the socket 211. The arc-shaped plate structure in this embodiment can also serve the function of the aforementioned slope structure, which will not be described in detail here.

[0076] Please continue to combine Figure 1 and Figure 2 In some embodiments of the present invention, the gearbox hoisting device further includes a connecting rod locking mechanism 400; the connecting rod locking mechanism 400 includes a connecting rod assembly and a wedge block 410; the wedge block 410 is located in the insertion hole 211, and a locking inclined surface is provided on the lower side of the wedge block 410, which is used to contact and cooperate with the upper side of the lifting lug; the connecting rod assembly is disposed on the locking support 210 and connected to the wedge block 410, and is used to adjust the position of the wedge block 410 in the insertion hole 211.

[0077] Understandably, due to the different lifting lug structures of various gearboxes, and the potential for variations in the lug's pitch angle during lifting, relying solely on the elastic locking assembly for elastic locking may result in insufficient locking performance. The aforementioned design utilizes a connecting rod locking mechanism 400 to assist the elastic locking assembly, improving the locking effect and providing a self-locking function, further reducing the likelihood of the lifting lug detaching.

[0078] In this embodiment, the thickness of the wedge block 410 gradually increases from the inlet to the outlet of the insertion hole 211. The lower side of the wedge block 410 has a sloping structure, so it can adapt to the change in thickness in the extension direction of the lug and fit well with the upper side of the lug.

[0079] Please continue to refer to this. Figure 2 Optionally, the linkage assembly includes a first linkage 420, a second linkage 430, an adjusting bolt 440, a locking nut 450, and a mounting block 460; the mounting block 460 is provided with a mounting groove; the adjusting bolt 440 passes through the locking support 210, with one end of the adjusting bolt 440 located inside the insertion hole 211 rotatably connected to the mounting block 460, and the other end located outside the insertion hole 211 threadedly connected to the locking nut 450; the locking nut 450 is fixedly connected to the side wall of the locking support 210; the first linkage 420 and the second linkage 430 are located inside the insertion hole 211, with one end of the first linkage 420 and one end of the second linkage 430 rotatably connected via a transition shaft, the transition shaft being slidably connected to the mounting groove, the end of the first linkage 420 facing away from the transition shaft being horizontally hinged to the inner wall of the locking support 210, and the end of the second linkage 430 facing away from the transition shaft being hinged to the wedge block 410.

[0080] Specifically, a through hole is provided on the side wall of the locking support 210. An adjusting bolt 440 is horizontally positioned and perpendicular to the inlet / outlet direction of the insertion hole 211. The adjusting bolt 440 passes through the through hole on the side wall of the locking support 210, with one end inside the locking support 210 rotatably connected to the side wall of the mounting block 460. A locking nut 450 is located on the outside of the locking support 210 and is fixedly connected to the locking support 210 by means such as welding. The locking nut 450 and the adjusting bolt 440 are connected by threads. A mounting groove extends vertically through the mounting block 460, with the extension direction of the mounting groove along the inlet / outlet direction of the insertion hole 211. An adapter shaft extends vertically through the mounting groove. A first connecting rod 420 is located below the mounting block 460, with one end rotatably connected to the adapter shaft located below the mounting block 460. A second connecting rod 430 is located above the mounting block 460, with one end rotatably connected to the adapter shaft located above the mounting block 460. The end of the first link 420 away from the adapter shaft is horizontally hinged to the top inner wall of the locking support 210 via a vertical pivot, and the end of the second link 430 away from the adapter shaft is ball-hung to the wedge block 410.

[0081] When the adjusting bolt 440 is rotated, the adjusting bolt 440 generates axial displacement, which drives the first connecting rod 420 and the second connecting rod 430 to rotate through the mounting block 460, thereby driving the wedge block 410 to move, thus achieving locking or loosening.

[0082] Optionally, a groove is provided on the lower side of the wedge block 410, and the locking plate 233 of the upper elastic locking assembly 230 is located in the groove.

[0083] Combination Figure 1 and Figure 4 According to an embodiment of the gearbox hoisting device of the present invention, the positioning mechanism 300 includes a cantilever 310 and a spring pin assembly 320. The cantilever 310 is horizontally rotatably connected to the traveling mechanism 100; the spring pin assembly 320 is disposed on the cantilever 310 and is used to engage with a threaded hole on the lower side.

[0084] In this embodiment, the cantilever 310 is horizontally rotatably connected to the traveling mechanism 100, thus enabling angle adjustment to adapt to differences in the horizontal angle arrangement of the lower threaded holes in different gearboxes. When the spring pin assembly 320 is inserted into the lower threaded hole, positioning can be achieved, further preventing the gearbox from disengaging from the spring self-locking mechanism 200, and also preventing relative movement between the cantilever 310 and the gearbox. At the same time, the cantilever 310 can provide support for the lower threaded hole area of ​​the gearbox, achieving multi-point support in conjunction with the spring self-locking mechanism 200.

[0085] In some embodiments of the present invention, the positioning mechanism 300 further includes a positioning component 330, which is disposed on the cantilever 310 and adapted to be positioned along the cantilever 310. The positioning component 330 is used to fix the outer side of the lower threaded hole. A spring pin assembly 320 is mounted on the positioning component 330 and is adapted to move with the positioning component 330. In this embodiment, by adjusting the positions of the positioning component 330 and the spring pin assembly 320 along the cantilever 310, the distance between the lower threaded hole and the lifting lug in different gearboxes can be adapted, thus having better applicability.

[0086] Optionally, a groove 311 is provided on the cantilever 310. The groove 311 passes through the cantilever 310 vertically and extends along the length of the cantilever 310. The positioning assembly 330 includes a positioning block 331, a threaded sleeve 332, and a sleeve nut 333. The positioning block 331 is located on the upper side of the cantilever 310 and is provided with a U-shaped groove. The threaded sleeve 332 passes through the groove 311 and is fixedly connected to the positioning block 331 at its upper end. The sleeve nut 333 is located on the lower side of the cantilever 310 and is threadedly connected to the threaded sleeve 332.

[0087] In the above embodiment, the positioning block 331 is located on the upper side of the cantilever 310 and is supported by the cantilever 310. The U-shaped groove on the positioning block 331 can be used to fix the outer side of the threaded hole, ensuring that it contacts the threaded mounting surface at the bottom of the gearbox and does not damage the mounting surface. When the sleeve nut 333 is loosened, the positioning component 330 can slide along the slide groove 311. When the sleeve nut 333 is tightened, the positioning component 330 and the cantilever 310 can be fixed in relative position under the clamping action of the positioning block 331 and the sleeve nut 333.

[0088] In some embodiments of the present invention, the bottom of the U-shaped groove is provided with a first through hole, and the bottom plate of the threaded sleeve 332 is provided with a second through hole. The inner cavity of the threaded sleeve 332 communicates with the first and second through holes. The spring pin assembly 320 includes a stepped positioning shaft 321, an extraction pin 322, and a compression spring 323. The stepped positioning shaft 321 is slidably inserted through the first through hole. The extraction pin 322 is slidably inserted through the second through hole, and the upper end of the extraction pin 322 is fixedly connected to the lower end of the stepped positioning shaft 321. The compression spring 323 is disposed inside the threaded sleeve 332 and sleeved on the outside of the extraction pin 322. The upper end of the compression spring 323 abuts against the lower end of the stepped positioning shaft 321, and the lower end of the compression spring 323 abuts against the bottom plate of the threaded sleeve 332.

[0089] Specifically, the axes of the first and second through holes coincide with the axis of the threaded sleeve 332. The upper diameter of the stepped positioning shaft 321 is smaller than the lower diameter, thus meeting the positioning requirements of the lower threaded holes of different specifications (e.g., M20, M24). The upper end of the extraction pin 322 is provided with a stud structure, and the lower end of the stepped positioning shaft 321 is provided with a threaded hole structure. The stud and the threaded hole are threadedly engaged to achieve a fixed connection between the extraction pin 322 and the stepped positioning shaft 321. Of course, the extraction pin 322 and the stepped positioning shaft 321 can also be fixedly connected by welding or other methods, which will not be described in detail here. The diameter of the second perforation and the extraction pin 322 is smaller than the diameter of the compression spring 323, and the diameter of the compression spring 323 is smaller than the diameter of the stepped positioning shaft 321. Thus, the compression spring 323 can be sleeved on the outside of the extraction pin 322, with its upper end abutting against the lower end of the stepped positioning shaft 321 and its lower end abutting against the bottom plate of the threaded sleeve 332.

[0090] In use, by pulling down the extraction pin 322 to lower the height of the stepped positioning shaft 321, and aligning the lower threaded hole of the gearbox with the stepped positioning shaft 321, releasing the extraction pin 322 allows the stepped positioning shaft 321 to be inserted into the lower threaded hole for positioning.

[0091] Optionally, the lower part of the extraction pin 322 is provided with a lateral annular groove to facilitate the pull-down operation of the extraction pin 322.

[0092] See you later Figure 3 In some embodiments of the present invention, the walking mechanism 100 includes a movable wheel 110, a rotating shaft assembly 120, a first support spring 130, and a second support spring 140. The movable wheel 110 is adapted to roll in contact with the ground. The rotating shaft assembly 120 is vertically arranged, with its lower end connected to the movable wheel 110 and its upper end connected to a spring self-locking mechanism 200. The rotating shaft assembly 120 is movably connected to the positioning mechanism 300, with a lower support surface located below the positioning mechanism 300 and an upper support surface located above the positioning mechanism 300. The first support spring 130 is sleeved on the rotating shaft assembly 120 and is located between the upper support surface and the positioning mechanism 300. The second support spring 140 is sleeved on the rotating shaft assembly 120 and is located between the lower support surface and the positioning mechanism 300.

[0093] In this embodiment, the rotating shaft assembly 120 and the positioning mechanism 300 are movably connected, which on the one hand satisfies the need to horizontally rotate the positioning mechanism 300 and adjust its orientation, and on the other hand allows the positioning mechanism 300 to be height-adjusted. The first support spring 130 and the second support spring 140 can be arranged to accommodate the height adjustment of the positioning mechanism 300.

[0094] Optionally, the rotating shaft assembly 120 includes a first rotating shaft 121 and a second rotating shaft 122. The lower end of the first rotating shaft 121 has a threaded hole, and its lower end face forms an upper support surface. The second rotating shaft 122 includes a first shaft segment and a second shaft segment. The upper part of the first shaft segment is a threaded shaft, and the lower part is a smooth shaft. The threaded shaft is threadedly connected to the threaded hole of the first rotating shaft 121. The smooth shaft passes through a through hole at the end of the cantilever 310, and its lower end is fixedly connected to the second shaft segment. The diameter of the smooth shaft is smaller than that of the second shaft segment. A first support spring 130 is sleeved on the portion of the smooth shaft above the cantilever 310, and a second spring is sleeved on the portion of the smooth shaft below the cantilever 310.

[0095] Optionally, the movable wheel 110 in this embodiment is a swivel wheel, which can meet the movement needs in different directions.

[0096] In summary, the gearbox lifting device provided by this invention facilitates the lifting of gearboxes. During lifting, it protects the lifting lugs and lower threaded holes of the gearbox, preventing damage, and also achieves stable locking and positioning to prevent detachment, thus improving production safety. It is well-suited for gearbox structures of different models and sizes, reducing production costs.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gearbox lifting device, suitable for gearboxes, wherein the gearbox is provided with lifting lugs and a lower threaded hole, characterized in that, include: Walking mechanism; A spring self-locking mechanism includes a locking support base and an elastic locking component. The locking support base is disposed on the traveling mechanism and has an insertion hole adapted to be inserted into the lifting lug. The elastic locking component is disposed on the locking support base and is adapted to be elastically clamped into the lifting lug within the insertion hole. A positioning mechanism is provided on the traveling mechanism and is adapted to be inserted into the lower threaded hole; A linkage locking mechanism; the linkage locking mechanism includes a linkage assembly and a wedge block; the wedge block is located inside the insertion hole, and a locking inclined surface is provided on the lower side of the wedge block, the locking inclined surface being used to contact and cooperate with the upper side of the lifting lug; the linkage assembly is disposed on the locking support seat and connected to the wedge block, and is used to adjust the position of the wedge block inside the insertion hole.

2. The gearbox hoisting device according to claim 1, characterized in that, The linkage assembly includes a first link, a second link, an adjusting bolt, a locking nut, and a mounting block; The mounting block is provided with a mounting slot; The adjusting bolt passes through the locking support seat. One end of the adjusting bolt inside the insertion hole is rotatably connected to the mounting block, and the other end outside the insertion hole is threadedly connected to the locking nut. The locking nut is fixedly connected to the side wall of the locking support seat; The first connecting rod and the second connecting rod are located in the insertion hole. One end of the first connecting rod and one end of the second connecting rod are rotatably connected through a transition shaft. The transition shaft is slidably connected to the mounting groove. The end of the first connecting rod away from the transition shaft is horizontally hinged to the inner wall of the locking support seat. The end of the second connecting rod away from the transition shaft is hinged to the wedge block.

3. The gearbox hoisting device according to claim 1 or 2, characterized in that, The elastic locking assembly includes: A pair of lateral elastic locking components are respectively placed on both sides of the locking support base for elastic abutment and engagement with both sides of the lug in the socket; An upper elastic locking component is disposed on the upper side of the locking support base and is used to abut against the upper side of the lug within the insertion hole.

4. The gearbox hoisting device according to claim 3, characterized in that, At least one of the lateral elastic locking assembly and the upper elastic locking assembly has the following configuration: The device includes a slide rod, a locking spring, a locking plate, and a positioning nut. The slide rod is slidably connected to the locking support base. One end of the slide rod located inside the insertion hole is fixedly connected to the locking plate, and the other end located outside the insertion hole is threaded to the positioning nut. The locking spring is sleeved on the slide rod, with one end abutting against the side wall of the locking support base and the other end abutting against the locking plate.

5. The gearbox hoisting device according to claim 1, characterized in that, The positioning mechanism includes: The cantilever is horizontally rotatably connected to the walking mechanism; A spring pin assembly is disposed on the cantilever and is used to engage with the lower threaded hole.

6. The gearbox hoisting device according to claim 5, characterized in that, The positioning mechanism also includes: A positioning component is disposed on the cantilever and adapted to be positioned along the cantilever, the positioning component being used to fix the outer side of the lower threaded hole; The spring pin assembly is mounted on the positioning assembly and is adapted to move with the positioning assembly.

7. The gearbox hoisting device according to claim 6, characterized in that, The positioning component includes: A positioning block is located on the upper side of the cantilever, and the positioning block is provided with a U-shaped groove; A threaded sleeve passes through a groove provided on the cantilever, and its upper end is fixedly connected to the positioning block. A sleeve nut is located on the lower side of the cantilever and is threadedly connected to the threaded sleeve.

8. The gearbox hoisting device according to claim 7, characterized in that, The bottom of the U-shaped groove is provided with a first through hole, the bottom plate of the threaded sleeve is provided with a second through hole, the inner cavity of the threaded sleeve communicates with the first through hole and the second through hole, and the spring pin assembly includes: A stepped positioning shaft is slidably inserted through the first through hole; A extraction pin is slidably inserted through the second through hole, and the upper end of the extraction pin is fixedly connected to the lower end of the stepped positioning shaft. A compression spring is disposed inside the threaded sleeve and sleeved on the outside of the extraction pin. The upper end of the compression spring abuts against the lower end of the stepped positioning shaft, and the lower end of the compression spring abuts against the bottom plate of the threaded sleeve.

9. The gearbox hoisting device according to claim 1, characterized in that, The walking mechanism includes: Wheels; A rotating shaft assembly is vertically arranged. The lower end of the rotating shaft assembly is connected to the moving wheel, and the upper end is connected to the spring self-locking mechanism. The rotating shaft assembly is movably connected to the positioning mechanism. The rotating shaft assembly has a lower support surface located below the positioning mechanism and an upper support surface located above the positioning mechanism. A first support spring is sleeved with the rotating shaft assembly and is located between the upper support surface and the positioning mechanism; The second support spring is sleeved with the rotating shaft assembly and is located between the lower support surface and the positioning mechanism.

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