Vehicle heavy load hoisting mechanism

Abstract

The invention relates to a heavy-load hoisting mechanism for a vehicle, belongs to the technical field of vehicle hoisting devices, and solves the problem that a heavy-load unmanned vehicle without a hoisting point on a vehicle body is inconvenient to hoist in the prior art. The heavy-load unmanned vehicle lifting device comprises a lifting frame, a bracket and a lifting belt, the bracket is located below the lifting frame and connected with the lifting frame through the lifting belt, and the bracket is used for dragging wheels of a heavy-load unmanned vehicle so as to support the heavy-load unmanned vehicle. According to the invention, the heavy-load unmanned vehicle without lifting points on the vehicle body is quickly, conveniently and safely lifted, and the lifting efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle hoisting devices, and in particular to a heavy-load hoisting mechanism for a vehicle. Background Art

[0002] With the development of society, vehicles of various forms and functions emerge in an endless stream, especially with the development of heavy-duty unmanned vehicles. For vehicles without cabs, they cannot drive to semi-trailers. At the same time, due to the complex structure of the vehicles and the lack of lifting points on the body, if ropes are used to fix the four wheels, the operation from tying to disassembly is more troublesome and prone to the risk of slipping. When using net bags for operation, it has the advantages of simple structure, small size and light weight, but the production cost is high and the length of the lifting system is difficult to control. At the same time, when the net bag is used to lift the vehicle, the vehicle needs to be moved, which is inconvenient to operate, the lifting speed is slow and the operation efficiency is low. Therefore, how to place the heavy-duty unmanned vehicle without lifting points on the body on the semi-trailer for transportation becomes a matter that must be considered. Summary of the invention

[0003] In view of the above analysis, the present invention aims to provide a heavy-load lifting mechanism for a vehicle, so as to solve the problem in the prior art that it is inconvenient to lift a heavy-loaded unmanned vehicle without a lifting point on the vehicle body.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] A heavy-load lifting mechanism for a vehicle comprises a hanger, a bracket and a sling, wherein the bracket is located below the hanger and connected to the hanger via the sling, and the bracket is used for dragging the wheels of a heavy-loaded unmanned vehicle, thereby supporting the heavy-loaded unmanned vehicle.

[0006] Furthermore, it is characterized in that the lateral width of the hanger is greater than the body width of the heavy-load unmanned vehicle, so as to ensure that the sling does not interfere with the body during the lifting process.

[0007] Further, it is characterized in that the hanger includes a supporting frame and a lifting ear assembly, and the lifting ear assembly includes a hanger lifting ear assembly.

[0008] Furthermore, it is characterized in that the support frame includes a cross beam and a longitudinal beam, and the cross beam and the longitudinal beam are fixedly connected.

[0009] Furthermore, it is characterized in that a plurality of first positioning holes are provided on the longitudinal beam.

[0010] Furthermore, it is characterized in that the hanger eye assembly includes at least two eye groups.

[0011] Furthermore, it is characterized in that the bracket includes a bracket rod, a lifting ear seat and a bracket lifting ear.

[0012] Furthermore, it is characterized in that the bracket also includes a lead screw, and both ends of the lead screw are respectively connected to the support rod.

[0013] Furthermore, it is characterized in that at least two brackets are provided.

[0014] Furthermore, it is characterized in that the bracket is arranged corresponding to the eye group.

[0015] The technical solution of the present invention can achieve at least one of the following effects:

[0016] (1) The present invention provides a heavy-load lifting mechanism for a vehicle, including a hanger, a bracket and a sling. The bracket is located below the hanger and connected to the hanger through the sling. The bracket is used to tow the wheels of the heavy-loaded unmanned vehicle, thereby supporting the heavy-loaded unmanned vehicle. The present invention realizes the rapid, convenient and safe lifting of a heavy-loaded unmanned vehicle without a lifting point on the vehicle body, thereby improving the lifting efficiency.

[0017] (2) The present invention provides a lifting lug seat that can clamp the wheel, and the lifting lug seat includes a base, a clamping cantilever, a clamping drive disk, a lifting ring and a cover plate, wherein the cover plate is buckled on the base and fixedly connected to the base; the clamping cantilever, the clamping drive disk and the lifting ring are installed between the cover plate and the base; the clamping drive disk is mounted between the base and the cover plate and is rotatably connected to the base and the cover plate; the clamping cantilever is slidably connected to the base, one end of the clamping cantilever is connected to the clamping drive disk, and the other end is used to clamp the wheel when lifting a heavy-loaded unmanned vehicle, and the lifting ring is slidably connected to the cover plate, one end of the lifting ring is hinged to the bracket lifting lug, and the other end is connected to the clamping drive disk. During lifting, the lifting ring moves upward in the vertical direction and drives the clamping drive disk to rotate, thereby driving the clamping cantilever to clamp the wheel of the heavy-loaded unmanned vehicle, so that the bracket is fixedly connected to the wheel, preventing the wheel from escaping from the bracket, and further realizing stable and safe lifting.

[0018] (3) The present invention arranges an extension end and a locking device on the connecting rod, adjusts the length of the extension end extending out of the connecting rod, and fixes the extension end on the connecting rod through the locking device. The clamping cantilever can be adjusted to clamp wheels of different diameters, thereby expanding the application range of the lifting mechanism and improving the versatility of the lifting mechanism.

[0019] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0021] Figure 1 It is a structural schematic diagram of the lifting mechanism in Example 1 of the present invention;

[0022] Figure 2 This is one of the structural schematic diagrams of the hanger in Embodiment 1 of the present invention;

[0023] Figure 3 This is a second structural schematic diagram of the hanger in Embodiment 1 of the present invention;

[0024] Figure 4 This is one of the structural schematic diagrams of the bracket in Example 1 of the present invention;

[0025] Figure 5 This is a second structural schematic diagram of the bracket in Embodiment 1 of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the lifting lug seat in Example 2 of the present invention;

[0027] Figure 7 for Figure 6 Sectional view along line AA;

[0028] Figure 8 This is a schematic diagram of the explosion of the structure of the lifting ear seat in Example 2 of the present invention;

[0029] Fig. 9 This is one of the structural schematic diagrams of the base in Example 2 of the present invention;

[0030] Fig.10 This is a second structural schematic diagram of the base in Embodiment 2 of the present invention;

[0031] Fig.11 This is a schematic diagram of the structure of the clamping cantilever in Example 2 of the present invention;

[0032] Fig.12 This is one of the structural schematic diagrams of the clamping drive disk in Embodiment 2 of the present invention;

[0033] Fig.13 This is the second structural schematic diagram of the clamping drive disk in Embodiment 2 of the present invention;

[0034] Fig.14 This is one of the structural schematic diagrams of the lifting ring in Example 2 of the present invention;

[0035] Fig.15 This is the second structural schematic diagram of the lifting ring in Example 2 of the present invention;

[0036] Fig.16This is one of the structural schematic diagrams of the cover plate in Example 2 of the present invention;

[0037] Fig.17 This is the second structural schematic diagram of the cover plate in Embodiment 2 of the present invention;

[0038] Fig.18 This is a schematic diagram of the structure of the clamping cantilever in Example 3 of the present invention;

[0039] Fig.19 for Fig.18 Middle B is a partial enlarged view;

[0040] Fig. 20 for Fig.19 sectional view of .

[0041] Reference numerals:

[0042] 1. Hanger;

[0043] 11. Support frame; 111. Crossbeam; 112. Longitudinal beam; 1121. First positioning hole; 1122. Second positioning hole; 12. Hanger eye assembly; 121. First lifting eye group; 122. Second lifting eye group; 131. Third lifting eye group; 132. Fourth lifting eye group; 13. Lifting eye assembly; 14. Strengthening beam;

[0044] 2. Bracket;

[0045] 21, support rod; 211, bracket through hole; 22, ear seat; 221, base; 2211, base body; 22111, first shaft hole; 2212, limit slide; 22121, first limit slide; 22122, second limit slide; 22123, third limit slide; 222, hold cantilever; 2221, connecting rod; 22211, extension end; 2222, pin; 2223, clamping rod; 2224, support plate; 223, hold Driving plate; 2231, driving plate body; 22311, driving slide; 2232, gear; 2233, rotating shaft; 224, lifting ring; 2241, lifting ring body; 22411, rack; 2242, pull rod; 2243, counterweight; 225, cover plate; 2251, cover plate body; 22511, lifting ring guide groove; 22512, second shaft hole; 2252, protrusion; 22521, groove cavity; 23, bracket lifting ear; 24, lead screw;

[0046] 3. Suspenders;

[0047] 4. Locking device;

[0048] 41. Locking pin; 42. Spring; 43. Wedge; 44. Housing; 45. Lock. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0050] Example 1

[0051] A specific embodiment of the present invention discloses a heavy-load lifting mechanism for a vehicle, which is used to lift a heavy-load unmanned vehicle without a lifting point on the vehicle body; Figure 1 As shown, the hoisting mechanism includes a hanger 1, a bracket 2 and a sling 3. The hanger 1 is connected to an external hoist through a lifting rope, and the bracket 2 is located below the hanger 1 and connected to the hanger 1 through the sling 3. The bracket 2 is used to tow the wheels of the heavy-loaded unmanned vehicle, thereby supporting the heavy-loaded unmanned vehicle and realizing safe and fast hoisting of the heavy-loaded unmanned vehicle without a hoisting point. The lateral width of the hanger 1 is greater than the body width of the heavy-loaded unmanned vehicle, ensuring that the sling 3 does not interfere with the body during the hoisting process, and the sling 3 can be prevented from damaging the body skin of the heavy-loaded unmanned vehicle. By adjusting the length of the sling 3, the distance between the hanger 1 and the bracket 2 is adjusted, so that heavy-loaded unmanned vehicles of different heights can be hoisted. The hanger 1 can play the role of a balance beam to ensure stability when hoisting the heavy-loaded unmanned vehicle.

[0052] Preferably, if Figure 2 As shown, the hanger 1 includes a supporting frame 11 and a lifting ear assembly detachably connected to the supporting frame 11, the lifting ear assembly includes a hanger lifting ear assembly 12 and a lifting lifting ear assembly 13, the hanger lifting ear assembly 12 is detachably installed on the lower part of the supporting frame 11, and is used to be connected to the bracket 2 through a lifting belt 3; the lifting lifting ear assembly 13 is detachably installed on the upper part of the supporting frame 11, and is used to be connected to the crane through a lifting rope.

[0053] Preferably, if Figure 3 Therefore, the support frame 11 includes two cross beams 111 perpendicular to the length direction of the heavy-loaded unmanned vehicle body and two longitudinal beams 112 parallel to the length direction of the heavy-loaded unmanned vehicle body, and the cross beams 111 and the longitudinal beams 112 are fixedly connected; the length of the cross beam 111 is greater than the width of the heavy-loaded unmanned vehicle body, which can ensure that the sling 3 does not interfere with the vehicle body during the lifting process to avoid damage to the vehicle body; the longitudinal beam 112 is provided with a plurality of first positioning holes 1121 and a plurality of second positioning holes 1122, and the plurality of first positioning holes 1121 are located at the lower part of the longitudinal beam 112 and are linearly arranged at equal intervals. The lifting ears in the hanger lifting ear assembly 12 are hinged to the longitudinal beam 112 through the first positioning holes 1121; the plurality of second positioning holes 1122 are located at the upper part of the longitudinal beam 112 and are linearly arranged at equal intervals. The middle lifting ear of the lifting lifting ear assembly 13 is hinged to the longitudinal beam 112 through the second positioning hole 1122; the first positioning hole 1121 and the second positioning hole 1122 are correspondingly arranged.

[0054] Preferably, the hanger eye assembly 12 includes at least two eye groups. In this embodiment, two eye groups are preferably provided, namely a first eye group 121 and a second eye group 122. By adjusting the eyes in the first eye group 121 and the eyes in the second eye group 122 to be installed in different first positioning holes 1121 on the longitudinal beam 112, the distance between the first eye group 121 and the second eye group 122 can be adjusted, and the distance between the first eye group 121 and the second eye group 122 can be matched with the wheelbase of the heavy-duty unmanned vehicle, so that when the heavy-duty unmanned vehicle is hoisted, the sling 3 remains vertical to achieve stable hoisting. Installation; the lifting ear assembly 13 includes at least two ear groups. In this embodiment, two ear groups are preferably arranged, namely a third ear group 131 and a fourth ear group 132. By adjusting the ears in the third ear group 131 and the ears in the fourth ear group 132 to be installed in different second positions 1122 on the longitudinal beam 112, the distance between the third ear group 131 and the fourth ear group 132 can be adjusted, and the third ear group 131 and the fourth ear group 132 can be made to correspond to the first ear group 121 and the second ear group 122 respectively, so that the support frame 11 can be balanced, thereby further realizing stable lifting.

[0055] Preferably, the hanger 1 also includes a plurality of reinforcing beams 14, which are cross-arranged and fixedly connected to the support frame 11, so as to enhance the support strength of the support frame 11, thereby improving the load-bearing capacity and support stability of the hanger 1 during hoisting.

[0056] Preferably, if Figure 4 and Figure 5 As shown, the bracket 2 includes a support rod 21, two ear seats 22 detachably connected to the two ends of the support rod 21, and a bracket ear 23 hingedly connected to the ear seats 22. The support rod 21 is provided with a plurality of bracket through holes 211, and the plurality of bracket through holes 211 are located at the two ends of the support rod 21 and are symmetrically and equidistantly distributed. By adjusting the two ear seats 22 to be installed in different bracket through holes 211 on the support rod 21, the spacing between the two ear seats 22 can be adjusted and matched with the wheelbase of the heavy-loaded unmanned vehicle, so that the bracket 2 is suitable for heavy-loaded unmanned vehicles with different wheelbases, and the wheels of the heavy-loaded unmanned vehicle can be prevented from sliding before the two ear seats 22 during lifting, thereby improving the stability during lifting.

[0057] Preferably, the support rod 21 includes a first support rod and a second support rod. During lifting, the wheels of the heavy-loaded unmanned vehicle are placed between the first support rod and the second support rod, thereby lifting the wheels of the heavy-loaded unmanned vehicle as a whole. Compared with the fixed lifting of a single wheel in the prior art, lifting the wheel as a whole can avoid lateral pulling force on the wheel and protect the wheel.

[0058] Preferably, the bracket lifting ear 23 is hingedly connected to the lifting ear seat 22, and the vertical distance from the connection point to the support rod 21 is greater than the radius of the wheel, so that when the heavy-loaded unmanned vehicle is lifted, the vehicle of the heavy-loaded unmanned vehicle is always kept in the bracket 2 under the action of gravity, thereby improving stability and safety during lifting.

[0059] Preferably, the bracket 2 also includes a screw 24, both ends of which are respectively connected to the first support rod and the second support rod; by adjusting the screw 24 to be installed at different positions on the support rod 21, the distance between the screw 24 and the ear seat 22 is adjusted, so that the screw 24 and the ear seat 22 clamp the wheel, and then the bracket 2 is fixedly connected to the wheel, which can prevent the wheel from escaping from the bracket 2 during lifting, thereby improving the stability and safety during lifting.

[0060] Preferably, at least two brackets 2 are provided. In the present embodiment, two brackets 2 are preferably provided, namely a first bracket and a second bracket. In addition, the number of brackets 2 can be set according to the body length and the number of wheel groups of the heavy-loaded unmanned vehicle, so that the heavy-loaded unmanned vehicle can be lifted more stably. The first bracket is connected to the first lifting ear group 121 in the hanger lifting ear assembly 12 in the hanger 1 through the sling 3, and the second bracket is connected to the second lifting ear group 122 in the hanger lifting ear assembly 12 in the hanger 1 through the sling 3. By adjusting the lifting ears in the first lifting ear group 121 and the second lifting ear group 122 to be installed at different positions on the longitudinal beam 112, the distance between the first lifting ear group 121 and the second lifting ear group 122 is adjusted, so that the distance between the first bracket and the second bracket matches the wheelbase of the heavy-loaded unmanned vehicle, thereby achieving stable lifting.

[0061] Example 2

[0062] Embodiment 2 is a further improvement on the lug seat 22 based on Embodiment 1. Figure 6 , Figure 7 and Figure 8As shown, the lifting ear seat 22 includes a base 221, a clamping cantilever 222, a clamping drive disk 223, a lifting ring 224 and a cover plate 225, wherein the cover plate 225 is buckled on the base 221 and fixedly connected to the base 221; the clamping cantilever 222, the clamping drive disk 223 and the lifting ring 224 are installed between the cover plate 225 and the base 221; the clamping drive disk 223 is mounted between the base 221 and the cover plate 225, and is rotatably connected to the base 221 and the cover plate 225; the clamping cantilever 222 is slidably connected to the base 221, one end of the clamping cantilever 222 is connected to the clamping drive disk 223, and the other end is used to clamp the wheel when lifting a heavy-loaded unmanned vehicle. The lifting ring 224 is slidably connected to the cover plate 225, one end of the lifting ring 224 is hinged to the bracket lifting ear 23, and the other end is connected to the clamping drive disk 223. During lifting, the lifting ring 224 moves upward in the vertical direction and drives the clamping drive disk 223 to rotate, thereby driving the clamping cantilever 222 to clamp the wheel of the heavy-loaded unmanned vehicle, so that the bracket 2 is fixedly connected to the wheel to prevent the wheel from escaping from the bracket 2, and further realizes stable and safe lifting; compared with the prior art, the lifting ear seat 22 automatically clamps the wheel of the heavy-loaded unmanned vehicle when lifting the unmanned heavy-loaded vehicle, so that the bracket 2 is fixedly connected to the wheel to prevent the wheel from escaping from the bracket 2, and further realizes stable and safe lifting.

[0063] Preferably, if Fig. 9 and Fig.10 As shown, the base 221 includes a base body 2211 and a limiting slide groove 2212. A first axial hole 22111 is provided at the center of the base body 2211. The limiting slide groove 2212 extends toward the central axis direction of the first axial hole 22111. The limiting slide groove 2212 cooperates with the clamping cantilever 222 to limit the sliding direction of the clamping cantilever 222.

[0064] Preferably, three limiting slots 2212 are provided, namely, a first limiting slot 22121, a second limiting slot 22122 and a third limiting slot 22123; the third limiting slot 22123 is provided at the upper end surface of the base body 2211 and is perpendicular to the ground, the first limiting slot 22121 and the second limiting slot 22122 are provided at the lower end surface of the base body 2211 and are symmetrically distributed on both sides of the third limiting slot 22123; the angle range between the third limiting slot 22123 and the first limiting slot 22121 or the second limiting slot 22122 is greater than 90 degrees and less than 180 degrees. In this embodiment, the angle between the third limiting slot 22123 and the first limiting slot 22121 or the second limiting slot 22122 is preferably 120 degrees, so that the clamping cantilever 222 is evenly stressed when clamping the wheel to avoid damage to the wheel.

[0065] Preferably, if Fig.11 As shown, the clamping cantilever 222 is arranged corresponding to the limiting slide groove 2212 in the base 221, and the clamping cantilever 222 slides in the limiting slide groove 2212, so that the clamping cantilever 222 is slidably connected to the base 221; the clamping cantilever 222 includes a connecting rod 2221, a pin 2222 and a clamping rod 2223, the pin 2222 and the clamping rod 2223 are fixedly connected to the two ends of the connecting rod 2221, the connecting rod 2221 is arranged in the limiting slide groove 2212, and slides in the limiting slide groove 2212; the clamping rod 2223 is used for clamping the tire during lifting; the pin 2222 is connected to the clamping drive disk 223, and the connecting rod 2221 is driven to move along the radial direction of the wheel through the rotation of the clamping drive disk 223, thereby driving the clamping rod 2223 to move in the direction away from or close to the wheel, thereby realizing that the lifting ear seat 22 clamps or releases the wheel.

[0066] Preferably, the clamping cantilever 222 also includes a support plate 2224, which is installed on the clamping rod 2223. The support plate 2224 is arc-shaped and adapted to the contour of the wheel; the width of the support plate 2224 is greater than the width of the wheel, thereby increasing the contact area between the bracket 2 and the wheel and expanding the force-bearing area during lifting to avoid concentrated force on the wheel and damage to the wheel; in addition, the increase in the force-bearing surface can also enhance its clamping force.

[0067] Preferably, an anti-skid structure is provided on the side of the support plate 2224 that contacts the wheel, which is used to increase the friction between the support plate 2224 and the wheel during lifting, further prevent the wheel from rotating relative to the cantilever 222, and further fix the bracket 2 and the wheel.

[0068] Preferably, three clamping cantilevers 222 are provided, namely a first clamping cantilever, a second clamping cantilever and a third clamping cantilever, and the first clamping cantilever, the second clamping cantilever and the third clamping cantilever are respectively arranged corresponding to the first limiting slide groove 22121, the second limiting slide groove 22122 and the third limiting slide groove 22123 in the base 221, and the first clamping cantilever, the second clamping cantilever and the third clamping cantilever are simultaneously driven by the clamping drive disk 223 to move radially along the wheel of the hoisting vehicle, so that the lifting ear seat 22 can clamp or release the wheel.

[0069] Preferably, the clamping rod 2223 in the first clamping cantilever and the second clamping cantilever is a sleeve structure; the first clamping cantilever and the second clamping cantilever are detachably connected to the first support rod and the second support rod respectively.

[0070] Preferably, if Fig.12 and Fig.13As shown, the holding drive disk 223 includes a drive disk body 2231, a gear 2232 and a rotating shaft 2233. The drive disk body 2231 and the gear 2232 are both sleeved on the rotating shaft 2233 and fixedly connected to the rotating shaft 2233; one end of the rotating shaft 2233 is inserted into the first shaft hole 22111 in the base 221 and is rotatably connected to the first shaft hole 22111; the other end of the rotating shaft 2233 is removed into the second shaft hole 22512 on the cover plate 225 and is rotatably connected to the second shaft hole 22512; a driving slide groove 22311 is provided on the drive disk body 2231, and the driving slide groove 22312 is provided on the drive disk body 2231. The movable slide groove 22311 is arranged corresponding to the clamping cantilever 222; the pin 2222 in the clamping cantilever 222 can be inserted into the driving slide groove 22311 and can slide in the driving slide groove 23311; the driving slide groove 22311 is arc-shaped, one end of which is located at the edge of the driving disk body 2231, and the other end extends toward the axis of the driving disk body 2231. Rotating the driving disk body 2231 can make the pin 2222 slide in the driving slide groove 22311, thereby realizing the radial movement of the driving clamping rod 2223 along the wheel of the hoisting vehicle, thereby realizing automatic clamping during hoisting and automatic loosening of the wheel during unloading.

[0071] Preferably, three driving slide grooves 22311 are provided, namely the first driving slide groove, the second driving slide groove and the third driving slide groove, which respectively correspond to the first clamping cantilever, the second clamping cantilever and the third clamping cantilever, so as to realize that the rotating driving disk body 2231 simultaneously drives the first clamping cantilever, the second clamping cantilever and the third clamping cantilever to move, thereby realizing automatic clamping of the wheel during lifting and automatic loosening of the wheel during unloading.

[0072] Preferably, if Fig.14 and Fig.15 As shown, the lifting ring 224 includes a lifting ring body 2241 and a pulling rod 2242. The lifting ring body 2241 is a long ring structure, and a rack 22411 is provided on the inner wall on one side along its length direction. The rack 22411 is meshedly connected with the gear 2232 in the clamping drive disk 223, so that the lifting ring body 2241 drives the clamping drive disk 223 to rotate when the lifting ring body 2241 moves up and down, and at the same time drives the first clamping cantilever, the second clamping cantilever and the third clamping cantilever to move along the radial direction of the wheel at the same time; one end of the pulling rod 2242 is fixedly connected to the upper end of the lifting ring body 2241, and the other end is hinged to the bracket ear 23.

[0073] Preferably, the lifting ring 224 also includes a counterweight block 2243, and the counterweight block 2243 is fixedly connected to the lower end of the lifting ring body 2241. The counterweight block 2243 is used to increase the weight of the lifting ring body 2241, so that the lifting ring body 2241 slides downward under the action of gravity when the sling 3 is relaxed, and drives the driving disc body 2231 to rotate in the opposite direction, thereby driving the first clamping cantilever, the second clamping cantilever and the third clamping cantilever to move simultaneously along the radial direction of the wheel away from the wheel, thereby realizing automatic release of the wheel.

[0074] Preferably, if Fig.16 and Fig.17 As shown, the cover plate 225 includes a cover plate body 2251 and a protrusion 2252, a second axial hole 22512 is provided at the center of the cover plate body 2251, and the second axial hole 22512 is coaxially arranged with the first axial hole 22111 in the base 221; the protrusion 2252 is arranged corresponding to the limiting slide groove 2212 in the base 221; a groove cavity 22521 is provided on the protrusion 2252, and the groove cavity 22521 corresponds to the limiting slide groove 2212 and can be buckled on the limiting slide groove 2212, so as to prevent the connecting rod 2221 in the clamping cantilever 222 from escaping from the limiting slide groove 2212, so that the connecting rod 2221 can only slide along the limiting slide groove 2212, thereby limiting the sliding direction of the clamping cantilever 222.

[0075] Preferably, three protrusions 2351 are provided, namely, a first protrusion, a second protrusion and a third protrusion; the first protrusion, the second protrusion and the third protrusion are respectively provided corresponding to the first limiting slide groove 22121, the second limiting slide groove 22122 and the third limiting slide groove 22123 in the base 221, and the groove cavities 22521 on the first protrusion, the second protrusion and the third protrusion respectively correspond to the first limiting slide groove 22121, the second limiting slide groove 22122 and the third limiting slide groove 22123, and can be respectively buckled on the first limiting slide groove 22121, the second limiting slide groove 22122 and the third limiting slide groove 22123.

[0076] Preferably, a lifting ring guide groove 22511 is also provided on the cover body 2251, and the lifting ring guide groove 22511 extends from the edge of the cover 225 at the third protrusion to the other edge opposite to the cover 225, and is perpendicular to the ground. The lifting ring guide groove 22511 cooperates with the lifting ring body 2241 to limit the sliding direction of the lifting ring body 2241, so that when the sling 3 is tightened or relaxed, the lifting ring 224 can only slide in a direction perpendicular to the ground.

[0077] Example 3

[0078] Embodiment 3 is a further improvement on the connecting rod 2221 in the clamping cantilever 222 based on Embodiment 2. Fig.18, Fig.19 and Fig. 20 As shown, the connecting rod 2221 also includes an extension end 22211 and a locking device 4. One end of the extension end 22211 is inserted into the connecting rod 2221 and is slidably connected to the connecting rod 2221, and the other end is fixedly connected to the clamping rod 2223. By adjusting the length of the extension end 22211 extending out of the connecting rod 2221 and fixing the extension end 22211 on the connecting rod 2221 by the locking device 4, the clamping cantilever 222 can be adjusted to clamp wheels of different diameters, thereby expanding the application range of the lifting mechanism and improving the versatility of the lifting mechanism.

[0079] Preferably, a locking positioning hole is provided at one end of the connecting rod 2221 away from the pin 2222, and a plurality of locking through holes are provided on the extending end 22211 evenly arranged along the length direction of the extending end 22211, and a plurality of locking positioning holes are arranged corresponding to the plurality of locking through holes.

[0080] Preferably, the locking device 4 comprises a locking pin 41, a spring 42, a wedge 43, a housing 44 and a lock catch 45. The locking pin 41, the spring 42 and the wedge 43 are all installed in the housing 44. The locking pin 41 and the wedge 43 are slidably connected to the housing 44. The lock catch 45 is installed on the outer wall of the housing 44 and is used to lock the wedge 43 pressed into the housing 44. One end of the locking pin 41 can be inserted into the locking positioning hole and the locking through hole, and the other end is provided with a blocking piece. One end of the spring 42 is connected to the connecting rod 2. 221 is fixedly connected, and the other end is fixedly connected to the blocking piece of the locking pin 41, and always applies elastic force to the locking pin 41; the locking positioning hole and the locking through hole are aligned, and the wedge block 43 is pressed into the shell 44, thereby pushing the locking pin 41 into the locking positioning hole and the locking through hole. When the wedge block 43 is completely pressed into the shell 44, the lock buckle 45 locks the wedge block 43, so that the locking pin 41 is fixed in the locking positioning hole and the locking through hole, thereby realizing the length of the locking extension end 22211 extending out of the connecting rod 2221.

[0081] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A heavy-load lifting mechanism for a vehicle, characterized in that: The invention comprises a hanger (1), a bracket (2) and a sling (3); the bracket (2) is located below the hanger (1) and is connected to the hanger (1) via the sling (3); the bracket (2) is used to tow the wheels of a heavy-loaded unmanned vehicle, thereby supporting the heavy-loaded unmanned vehicle.

2. A heavy-load lifting mechanism for a vehicle according to claim 1, characterized in that: The lateral width of the hanger (1) is greater than the width of the body of the heavy-load unmanned vehicle, and is used to ensure that the sling (3) does not interfere with the body of the vehicle during the lifting process.

3. A heavy-load lifting mechanism for a vehicle according to claim 2, characterized in that: The hanger (1) comprises a supporting frame (11) and a lifting ear assembly, wherein the lifting ear assembly comprises a hanger lifting ear assembly (12).

4. A heavy-load lifting mechanism for a vehicle according to claim 3, characterized in that: The support frame (11) comprises a cross beam (111) and a longitudinal beam (112), and the cross beam (111) and the longitudinal beam (112) are fixedly connected.

5. A heavy-load lifting mechanism for a vehicle according to claim 4, characterized in that: The longitudinal beam (112) is provided with a plurality of first positioning holes (1121).

6. A heavy-load lifting mechanism for a vehicle according to claim 5, characterized in that: The hanger eye assembly (12) comprises at least two eye groups.

7. A heavy-load lifting mechanism for a vehicle according to claim 6, characterized in that: The bracket (2) comprises a bracket rod (21), a lifting ear seat (22) and a bracket lifting ear (23).

8. A heavy-load lifting mechanism for a vehicle according to claim 7, characterized in that: The bracket (2) also includes a lead screw (24), and both ends of the lead screw (24) are respectively connected to the support rod (21).

9. A heavy-load lifting mechanism for a vehicle according to claim 8, characterized in that: At least two brackets (2) are provided.

10. A heavy-load lifting mechanism for a vehicle according to claim 9, characterized in that: The bracket (2) is arranged corresponding to the lifting eye group.

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